Patent Description:
At present, a rolling rotor double-cylinder compressor in the related art refers to a compression assembly containing two cylinders arranged on a crankshaft axial direction, and both cylinders can achieve intake, compression and exhaust processes of the refrigerant, the two cylinders of the double-cylinder compressor exhaust gas out of the housing through different exhaust passages, thereby realizing double exhaust pressure which can effectively save space and energy consumption which was originally achieved by the two compressors. However, in the related art, it is difficult to completely seal the upper and lower cylinders of the double-cylinder compressor during gas exhaustion, resulting in an actual displacement of each exhaust circuit lower than theoretical design displacement, thus affecting energy efficiency. <CIT> relates generally to a dual-cylinder compressor comprising a housing, wherein the housing is provided with a first gas outlet port and a second gas outlet port; a first cylinder provided in the housing and comprising a first working chamber; a second cylinder provided in the housing and comprising a second working chamber, the second working chamber being communicated with the second gas outlet port via an inner chamber of the housing; the first working chamber being communicated with the first gas outlet port via an exhaust passage located within the housing being not communicated with the inner chamber of the housing.

<CIT> relates generally to a compressor with a bearing unit, wherein the bearing unit comprises a bearing and an exhaust separation plate. <CIT> relates generally to a two-stage rotary compressor and a refrigeration circulating device provided with the two-stage rotary compressor.

In the following, each of the described methods, apparatuses, embodiments, examples, and aspects, which do not fully correspond to the invention as defined in the claims is thus not according to the invention and is, as well as the whole following description, present for illustration purposes only or to highlight specific aspects or features of the claims. Embodiments not falling under the scope of the claims should be interpreted as examples useful for understanding the invention. The embodiments of the present invention aim to solve at least one of the technical problems existing in the prior art.

To this end, a first aspect of the embodiment of the present invention provides a compressor.

A second aspect of the embodiment of the present invention provides a refrigeration device.

In view of this, according to a first aspect of the embodiment of the present invention, a compressor is provided, wherein the compressor comprises: a housing, wherein the housing is provided with a first gas outlet port and a second gas outlet port, a first bearing is provided in the housing, and a first cylinder is provided in the housing. The first cylinder comprises a first working chamber, and a second cylinder is provided in the housing, wherein the second cylinder comprises a second working chamber connected to the second gas outlet port via an inner chamber of the housing, a first separator is located between the first bearing and the first cylinder, and a first exhaust port is provided on a first separator, the first exhaust port is communicated with the first working chamber, an exhaust passage is located in the housing, the first exhaust port is communicated with the first gas outlet port via the exhaust passage, and the exhaust passage and the inner chamber of the housing are not communicated with each other; wherein an exhaust pressure of the first working chamber is greater than the exhaust pressure of the second working chamber.

The compressor provided by an embodiment of the present invention comprises a housing, a first bearing, a first cylinder and a first separator, wherein the first separator is arranged between the first bearing and the first cylinder, specifically, the first cylinder comprises a first working chamber, and compression of the gas is achieved by a volume change of the first working chamber. Specifically, a side of the first separator facing the first cylinder is provided with a first exhaust port, and the first exhaust port is communicated with the first working chamber, that is, the first working chamber exhausts through the first exhaust port when compressing and exhausting the air. Furthermore, the compressor further comprises an exhaust passage, and the housing is provided with a first gas outlet port, wherein one end of the exhaust passage is communicated with the first exhaust port, and the other end of the exhaust passage is communicated with the first gas outlet port, and the exhaust passage and the inner chamber of the housing are not communicated with each other, that is to say, the exhaust passage through which the first working chamber flows during exhaust is not communicated with the inner chamber of the housing, but directly exhausts gas out of the compressor housing via the first gas outlet port of the housing. By adding a first separator between the first bearing and the first cylinder, and making the first working chamber communicate with the first exhaust port provided on the first separator to exhaust air, sealing performance in the exhaust process of the first working chamber is effectively improved, that is to say, leakage of the inner chamber of the first working chamber to the housing during exhaustion is reduced, so that the pressure of the gas exhausted from the first working chamber can be increased, so that the actual displacement from the first working chamber can be closer to theoretically designed displacement, thereby increasing the energy efficiency of the compressor.

Furthermore, the compressor comprises a second cylinder, and in particular, the second cylinder comprises a second working chamber connected to a second gas outlet port via an inner chamber of the housing, wherein the second cylinder and the first cylinder are distributed on an axial direction of the housing, and the two cylinders independently compress the air, facilitating dual-pressure exhaustion of the compressor. In particular, both the first cylinder and the second cylinder can achieve intake, compression and exhaust processes of a refrigerant, and this arrangement avoids the problem of high cost caused by arranging multiple compressors to achieve the double exhaustion function in the related art, and one compressor in the present invention can achieve the functions achieved by two compressors in the related art, reducing the processing cost and occupied space of the compressor, and facilitating the installation process of the compressor. Furthermore, in the present invention, it is defined that the exhaust pressure of the first working chamber is greater than the exhaust pressure of the second working chamber, i.e., it is defined that the exhaust pressures of the first cylinder and the second cylinder are different. Different exhaust pressure can make the time when the refrigerant reaches the predetermined temperature and the energy required to be different, and it can be understood that first cylinder and second cylinder achieve different exhaust pressure according to different usage requirements of the compressor. Thus, a condenser corresponding to the first cylinder and the second cylinder can achieve the condensing function efficiently, avoid the waste of energy, make full use of the advantages of a double-cylinder compressor, and significantly improve the energy efficiency of the compressor.

Note that for the double-cylinder compressor, the first separator defined in the present invention is provided between the first bearing and the first cylinder, but the first bearing and the first cylinder are not specifically defined as the upper bearing and the upper cylinder in the double-cylinder compressor. It can be understood that the first bearing can be an upper bearing located on an axial direction of the compressor housing, and the first cylinder can be a lower bearing and a lower cylinder located on the compressor axial direction of the housing, that is, the first separator may be located between the upper bearing and the upper cylinder, or may be located between the lower bearing and the lower cylinder, and when the first separator is located between the upper bearing and the upper cylinder, a first gas outlet port is connected to the working chamber in the upper cylinder via an exhaust passage and a first exhaust port, similarly, if the first separator is located in the lower bearing and the lower cylinder, the first gas outlet port is communicated with the working chamber in the lower cylinder via the exhaust passage and the first exhaust port, so that the corresponding working chamber can be sealed by adding the first separator, reduces leakage to the inner chamber of the housing when the working chamber is vented, resulting in an increase in compressor energy efficiency.

Note that the compressor further comprises a first piston and a second piston, the first cylinder is formed with a first accommodating chamber, and the first piston is eccentrically arranged in the first accommodating chamber, the second cylinder is also machined with a second accommodating chamber, the second piston is eccentrically placed in the second accommodating chamber, and the first piston can reciprocate within first accommodating chamber, so that the first piston achieves intake, compression of air and exhaust processes by changing the volume of the first working chamber, and the second piston can reciprocate within the second accommodating chamber, so that the second piston achieves intake, compression of air and exhaust process by changing the volume of the second working chamber; double exhaust function is achieved by providing two cylinders and two pistons, the first cylinder and the second cylinder can achieve intake, compression and exhaust process of the refrigerant; this arrangement avoids the problem of high cost caused by arranging a plurality of compressors to achieve double exhaust function in the related art, and one compressor in the present invention can achieve the functions which can be achieved by two compressors in the related art, reducing the processing cost and reducing the occupied space of the compressor, and is beneficial to improving the convenience of installing the compressor.

In addition, according to the compressor provided by the above-mentioned embodiment of the present invention further has the following additional technical features.

In one possible design, the exhaust passage comprises a first exhaust passage and a second exhaust passage, wherein the first exhaust passage is provided on a first bearing, the first exhaust passage is communicated with a first gas outlet port, the second exhaust passage is provided on a first separator, one end of the second exhaust passage is communicated with the first exhaust passage, and the other end of the second exhaust passage is communicated with the first exhaust port.

In this design, the exhaust passage includes the first exhaust passage and the second exhaust passage, wherein since the exhaust passage is not communicated with the inner chamber of the housing, that is, neither the first exhaust passage nor the second exhaust passage is communicated with the inner chamber of the housing, it is guaranteed that the first working chamber communicated with the exhaust passage can exhaust separately from the first gas outlet port. Specifically, the first exhaust passage is provided on the first bearing, and the second exhaust passage is provided on the first separator, wherein the second exhaust passage is provided on one side of the first separator close to the first bearing, and the second exhaust passage is communicated with the first exhaust port, one end of the first exhaust passage communicated with the second exhaust passage is provided on one side of the first bearing close to the first separator, and the first exhaust passage extends inside the first bearing along a radial direction to an end of the first bearing, and is communicated with the first gas outlet port through the end of the first bearing. By placing the first exhaust passage and second exhaust passage on the first bearing and first separator and combining the same to form a sealed chamber, the sealing effect of the exhaust passage is improved, leakage of the first working chamber to the inner chamber of the housing during exhaustion is further prevented, and the compressor energy efficiency is improved.

In addition, by arranging an exhaust passage on the first separator and the first bearing and communicating the same with the first cylinder, the length originally required by the exhaust passage is shortened, the leakage into the housing chamber when the first working chamber exhausts air, the exhaust pressure of the first working chamber is improved, and there is no need to additionally provide the exhaust passage in the location of the first cylinder away from the sliding vane slot, thereby effectively reducing the damage to the first cylinder, ensuring the rigidity of the first cylinder, thereby improving the use reliability of the compressor.

In one possible design, a shaft hole is provided on a first bearing, a first exhaust passage comprises a first side wall near one side of the shaft hole, and the minimum distance between a first side wall and a sidewall of the shaft hole is L1, wherein L1 ≥ <NUM>.

In this design, the first exhaust passage has a first side wall on the side of the shaft hole near the first bearing, and the minimum distance between the first side wall and the shaft hole sidewall is greater than or equal to <NUM>, that is, by defining the minimum distance between the first side wall and the shaft hole sidewall, i.e., defining a providing location of the first exhaust passage relative to the shaft hole, if the distance of the first side wall and the shaft hole sidewall is too small, the risk of leakage of the exhaust passage to the housing chamber is increased during exhaustion of the first working chamber. Therefore, the location of the first exhaust passage with respect to the shaft hole of the first bearing is defined so that the sealing performance of the first exhaust passage can be guaranteed, the leakage of the first working chamber during the exhaustion is further prevented, and the energy efficiency of the compressor is improved.

In one possible design, a shaft hole is provided on the first separator, the second exhaust passage comprises a second side wall near one side of the shaft hole, and the minimum distance between the second side wall and the sidewall of the shaft hole is L2, wherein L2 ≥ <NUM>.

In this design, the second exhaust passage has a second side wall on the side of the shaft hole near the first separator, and the minimum distance between the second side wall and the shaft hole sidewall of the first separator is greater than or equal to <NUM>, that is, by defining the minimum distance between the second side wall and the shaft hole sidewall of the first separator, i.e., defining the providing location of the second exhaust passage relative to the shaft hole of the first separator, if the distance between second side wall and shaft hole sidewall is too small, the risk of leakage of the exhaust passage to the housing chamber is increased during exhaustion of the first working chamber. Therefore, the location of the second exhaust passage with respect to the shaft hole of the first separator is defined so that the sealing performance of the second exhaust passage can be guaranteed, the leakage of the first working chamber during exhaustion is further prevented, and the energy efficiency of the compressor is improved.

In one possible design, a thickness of the first separator is Hl, a depth of the second exhaust passage along an axial direction of the housing is D1, and a height of the first exhaust port along the axial direction of the housing is h1, wherein the thickness Hl of the first separator, the depth Dl of the second exhaust passage, and the height h1 of the first exhaust port satisfy H1-D1 > <NUM> * (D1-h1).

In this design, the relationship between the thickness of the first separator, the depth of the second exhaust passage along the axial direction of the housing and the height of the first exhaust port along the axial direction of the housing is defined so as to satisfy H1-D1 > <NUM> * (D1-h1), that is to say, the height of the first exhaust port with respect to the first separator and the depth provided for the second exhaust passage on the first separator are defined, and specifically, if the second exhaust passage is too deep, the structural strength of the first separator is reduced and the service stability of the compressor is reduced, and if the second exhaust passage is too shallow, the effective flow area of the exhaust passage cannot be guaranteed. Meanwhile, if the first exhaust port along the axial direction of the housing is too high, the depth of a section where the second exhaust passage is connected to the first exhaust port is small, and the flow area of the gas cannot be guaranteed; if the first exhaust port is too low on an axial direction of the housing, the second exhaust passage is in communication with the first exhaust passage and the first exhaust port at the same time, and the passage required to be provided is relatively deep, thereby reducing the structural strength of the first separator. The relationship between the depth along the axial direction of the housing of the second exhaust passage and the height along the axial direction of the housing of the first exhaust port is defined, that is to say, the machining process of the first separator is defined so as to ensure the planarity of the first separator sealing surface, further preventing leakage of the first working chamber to the inner chamber of the housing while improving the service stability of the compressor, and improving the energy efficiency of the compressor.

In one possible design, a thickness of the first bearing is H2, a depth of the first exhaust passage along the axial direction of the housing is D2, and a height of the first exhaust port on an axial direction of the housing is h1, wherein the thickness H2 of the first bearing, the depth D2 of the first exhaust passage, and the height h1 of the first exhaust port satisfy H2-D2 > <NUM> * (D2-h1).

In this design, the relationship between the thickness of the first bearing, the depth of the first exhaust passage along the axial direction of the housing and the height of the first exhaust port along the axial direction of the housing is defined so as to satisfy H2-D2 > <NUM> * (D2-h1), that is to say, the depth provided for the second exhaust passage on the first bearing is defined, that is to say, the effective flow area of the sealed exhaust passage communicating with the first working chamber is defined; specifically, if the first exhaust passage is too deep, the structural strength of the first bearing will be reduced and the service stability of the compressor will be reduced, and if the first exhaust passage is too shallow, therefore, the effective flow area of the exhaust passage cannot be guaranteed, and therefore, the relationship between the thickness of the first bearing, the depth of the first exhaust passage along the axial direction of the housing and the height of the first exhaust port along the axial direction of the housing is defined, that is, the machining process of the first bearing is defined, so that the flatness of the sealing surface of the first bearing is guaranteed, and at the same time of improving the service stability of the compressor, leakage of the first working chamber into the inner chamber of the housing is further prevented, thereby improving the energy efficiency of the compressor.

In one possible design, the maximum cross-sectional area of the first exhaust port is Sl and the minimum cross-sectional area of the exhaust passage is S2, wherein Sl and S2 satisfy <MAT>.

In this design, the value range of the ratio of the maximum cross-sectional area of the first exhaust port to the minimum cross-sectional area of the exhaust passage is further defined, specifically, the ratio of the maximum cross-sectional area of the first exhaust port to the minimum cross-sectional area of the exhaust passage is greater than or equal to <NUM>, so that the flow area of the exhaust passage can be guaranteed.

In one possible design, a line is connected between a center point of the first exhaust port and a center point of the first separator, the line extending as a first face in the axial direction of the housing; a side of the exhaust passage close to the first gas outlet port comprises a second exhaust port, the second exhaust port is in communication with the first gas outlet port and the first exhaust port respectively, a center line of the second exhaust port is able to pass through the center of the first bearing, and the center line extends in the axial direction of the housing as a second face; an angle θ is formed between the first face and the second face, wherein the angle θ satisfies <NUM>°<θ<<NUM>°.

In this design, a range of values of the included angle between the center line of the exhaust passage and the first exhaust port in the radial direction of the first separator is defined. Specifically, the central point of the first exhaust port is connected to the axial center of the first separator, a side of the exhaust passage close to the first gas outlet port has a second exhaust port, and the center line of the second exhaust port can pass through the center of the first bearing, and the connection line and the center line of the second exhaust port respectively extend along the axial direction of the housing to form a first face and a second face, wherein the first face and the second face form an angle θ in the extending direction, and the angle θ satisfies <NUM> ° ≤ θ ≤ <NUM> °, so that tooling interference in the assembly process between compressor parts can be reduced, facilitating the manufacture of the compressor, and improving the assembly efficiency.

In one possible design, the compressor further comprises: a second bearing spaced from the first bearing, wherein the first cylinder and the second cylinder are located between the first bearing and the second bearing.

In this design, the compressor further comprises a second bearing, wherein the second bearing and the first bearing are spaced apart on an axial direction of the housing, and the first cylinder and the second cylinder are arranged between the first bearing and the second bearing, and specifically, the first bearing can provide support for a crankshaft, and the second bearing can provide support for the first cylinder, the second cylinder, and improve installation stability of the first cylinder and the second cylinder.

In one possible design, the compressor further comprises: a second separator located between the first cylinder and the second cylinder; the first bearing and the second separator abut against the first cylinder and the second bearing and the second separator abut against the second cylinder.

In this design, the compressor further comprises a second separator, and in particular, the second separator is provided between the first cylinder and the second cylinder, and the first cylinder and the second cylinder are further provided between the first bearing and the second bearing, so that the first bearing and the second separator block the first accommodating chamber of the first cylinder therebetween, and the second bearing and the second separator block the second accommodating chamber of the second cylinder therebetween.

Note that the compressor further comprises a first sliding vane assembly and a second sliding vane assembly, wherein the first cylinder comprises a first sliding vane slot and the second cylinder comprises a second sliding vane slot, the first sliding vane assembly is provided in the first sliding vane slot, the second sliding vane assembly is provided in the second sliding vane slot, the first sliding vane assembly, an outer peripheral surface of the first piston and an inner surface of the first cylinder form a first working chamber, the second sliding vane assembly, an outer peripheral surface of the piston and an inner surface of the second cylinder form a second working chamber; the first piston movement can change the volume of the first working chamber to compress the air, and the second piston movement can change the volume of the second working chamber to compress the air.

In one possible design, the compressor further comprises: a second gas outlet port provided on the housing; a third exhaust port communicated with the second working chamber, a third exhaust port communicated with the second gas outlet port via the inner chamber from the housing; an gas outlet passage, via which a third exhaust port is connected to the inner chamber of the housing; the gas outlet passage is not communicated with the exhaust passage.

In this design, the compressor also includes a second gas outlet port, specifically, the second gas outlet port is provided at the top of the housing, the third exhaust port is communicated with the second working chamber, wherein the second working chamber is communicated from the third exhaust port to the inner chamber of the housing via the gas outlet passage and exhausts gas out of the housing from the second gas outlet port. That is, the gas in the second working chamber is exhausted through the third exhaust outlet, diffused into the inner chamber of the housing, and then exhausted through the second gas outlet port. Since the exhaust pressure of the second cylinder is smaller than the exhaust pressure of the first cylinder, the gas pressure in the inner chamber of the housing is relatively low, which facilitates the oil return of the compressor and is beneficial to ensure the reliability of the compressor operation.

In one possible design, the compressor further comprises: the housing is provided with an intake port, and the compressor further comprises a first intake passage and a second intake passage, wherein the first working chamber is communicated with the intake port via the first intake passage, and the second working chamber is communicated with the intake port via the second intake passage. Furthermore, the first intake passage is communicated with the second intake passage.

In this design, an intake port may be placed on the housing such that both the first working chamber and the second working chamber communicate with an intake port. Specifically, the first working chamber is communicated to the intake port via the first intake passage, the second working chamber is communicated to the intake port via the second intake passage, and the first intake passage and the second intake passage are optionally communicated to each other, so as to reduce the total length of the intake passage, avoid affecting rigidity due to excessive processing of components such as a cylinder and a bearing, and reduce production costs.

In one possible design, the compressor further comprises: the housing is provided with two intake ports, and the compressor further comprises a first intake passage and a second intake passage, wherein the first working chamber is communicated with one intake port via the first intake passage, the second working chamber is communicated with the other intake port via the second intake passage, and the first intake passage and the second intake passage are not communicated with each other.

In this design, by providing two intake ports on the housing and communicating one working chamber with one intake port, the aires in the two intake passages do not mix with each other, thereby contributing to guaranteeing the intake amount of each cylinder.

Note that the first intake passage is provided on the first cylinder or the first bearing or the second separator and the second intake passage is provided on the second cylinder or the second bearing or the second separator.

According to a second aspect of the present invention, a refrigeration device is provided, wherein the refrigeration device comprises: a compressor as provided in any of the above-mentioned embodiments, thus providing all the advantageous technical effects of the compressor, which will not be described in detail herein.

In one possible design, the refrigeration device further comprises: a first condenser in communication with a first gas outlet port of the compressor; a first throttle element in communication with the first condenser; a first evaporator in communication with the first throttle element; a first reservoir communicating a first intake passage of the first evaporator and the compressor; a second condenser in communication with a second gas outlet port of the compressor; a second throttle element in communication with the second condenser; a second evaporator in communication with the second throttle element; a second reservoir in communication with the second evaporator and a second intake passage of the compressor.

In this design, the compressor and the first condenser, the first throttle element, the first evaporator and the first reservoir form a first group of refrigeration systems, and the compressor and the second condenser, the second throttle element, the second evaporator and the second reservoir form a second group of refrigeration systems, wherein the two groups of the refrigeration systems are independent from each other, that is to say, the refrigeration multiple exhaust functions achieved by multiple compressors in the related art by one compressor, reduces the processing cost of the refrigeration device, also reduces the occupied space of the refrigeration device, and improves the convenience of installing the internal components of the refrigeration device. Since the exhaust pressures of the first cylinder and the second cylinder are different, so that the exhaust pressures reaching the first condenser and the second condenser are different, the refrigeration device can have a double condensation temperature and a double evaporation temperature, which is beneficial to achieve the cascade utilization of energy and improve the energy efficiency of the refrigeration device. Especially in the case where the displacement of the first cylinder and the second cylinder are different so that the amount of the refrigerant condensed by the first condenser and the second condenser is also different, the energy efficiency of the refrigeration device is further improved.

In one possible design, the refrigeration device further comprises: a third condenser in communication with the first gas outlet port of the compressor; a third throttle element in communication with the third condenser; a third evaporator in communication with the third throttle element; a third reservoir communicating a first intake passage and a second intake passage of the third evaporator and the compressor; a fourth condenser in communication with the second gas outlet port of the compressor; a fourth throttle element in communication with the fourth condenser; a fourth evaporator in communication with the fourth throttle element; the third reservoir also communicates the first intake passage and the second intake passage of the fourth evaporator and the compressor.

In this design, the compressor and the third condenser, the third throttle element, the third evaporator, and the third reservoir form a third group of refrigeration systems, and the compressor and the fourth condenser, the fourth throttle element, the fourth evaporator, and the third reservoir form a fourth group of refrigeration systems, wherein the two groups of refrigeration systems are independent from each other, that is, the refrigeration device realizes multiple exhaust functions achieved by multiple compressors in the related art by one compressor, reduces the processing cost of the refrigeration device, also reduces the occupied space of the refrigeration device, and improves the convenience of installing the internal components of the refrigeration device. The first intake passage and the second intake passage communicate with the third reservoir, so that the provision of one reservoir can satisfy the intake functions of the first cylinder and the second cylinder, reduce the number of components in the refrigeration device, further reduce the processing cost of the refrigeration device, effectively reduce the volume of the refrigeration device, and improve the convenience of installation of the refrigeration device. Furthermore, since the exhaust pressure of the first cylinder and the second cylinder are different, so that the exhaust pressure reaching the third condenser and the fourth condenser are different, the refrigeration device can be provided with double condensing temperature and double evaporating temperature, which is beneficial to achieve the cascade utilization of energy and improve the energy efficiency of the refrigeration device. Especially in the case where the displacement of the first cylinder and the second cylinder are different so that the amounts of the refrigerant condensed by the third condenser and the fourth condenser are also different, the energy efficiency of the refrigeration device is further improved.

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of an embodiment taken in conjunction with the accompanying drawings of which:.

Wherein the corresponding relationship between the reference signs and the part names in <FIG> is:
<NUM> compressor, <NUM> housing, <NUM> first gas outlet port, <NUM> second gas outlet port, <NUM> first bearing, <NUM> second bearing, <NUM> first cylinder, <NUM> second cylinder, <NUM> first separator, <NUM> second separator, <NUM> first exhaust port, <NUM> exhaust passage, <NUM> first exhaust passage, <NUM> second exhaust passage, <NUM> crankshaft, <NUM> gas outlet passage, <NUM> first exhaust valve, <NUM> first condenser, <NUM> first throttle element, <NUM> first evaporator, <NUM> first reservoir, <NUM> second condenser, <NUM> second throttle element, <NUM> second evaporator, <NUM> second reservoir, <NUM> first intake passage, <NUM> second intake passage, <NUM> third condenser, <NUM> third throttle element, <NUM> third evaporator, <NUM> third reservoir, <NUM> fourth condenser, <NUM> fourth throttle element, <NUM> fourth evaporator.

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

The compressor and the refrigeration device provided according to some embodiments of the present invention are described below with reference to <FIG>.

As shown in <FIG>, <FIG> and <FIG>, an embodiment of the first aspect of the present invention provides a compressor <NUM>, comprising a housing <NUM>, wherein a first gas outlet port <NUM> and a second gas outlet port <NUM> are provided on the housing <NUM>, a first bearing <NUM> is provided in the housing <NUM>, a first cylinder <NUM> is provided in the housing <NUM>, the first cylinder <NUM> comprises a first working chamber, and a second cylinder <NUM> is provided in the housing <NUM>, wherein the second cylinder <NUM> comprises a second working chamber, and the second working chamber is communicated to the second gas outlet port <NUM> via an inner chamber of the housing <NUM>, a first separator <NUM> is located between the first bearing <NUM> and the first cylinder <NUM>, a first exhaust port <NUM> is provided on the first separator <NUM>, the first exhaust port <NUM> communicates with the first working chamber, an exhaust passage <NUM> is located in the housing <NUM>, the first exhaust port <NUM> communicates with the first gas outlet port <NUM> via the exhaust passage <NUM>, and the exhaust passage <NUM> does not communicate with the inner chamber of the housing <NUM>, wherein the exhaust pressure of the first working chamber is greater than the exhaust pressure of the second working chamber.

The compressor <NUM> provided by the embodiment of the present invention comprises a housing <NUM>, a first bearing <NUM>, a first cylinder <NUM> and a first separator <NUM>, wherein the first separator <NUM> is arranged between the first bearing <NUM> and the first cylinder <NUM>, specifically, the first cylinder <NUM> comprises a first working chamber, and the compression of the gas is achieved by a volume change of the first working chamber. Specifically, a side of the first separator <NUM> facing the first cylinder <NUM> is provided with a first exhaust port <NUM> which is communicated with the first working chamber, that is, the first working chamber exhausts gas through the first exhaust port <NUM> when compressing and exhausting the air. Furthermore, the compressor <NUM> further comprises an exhaust passage <NUM>, and the housing <NUM> is provided with a first gas outlet port <NUM>, wherein one end of the exhaust passage <NUM> is communicated with the first exhaust port <NUM>, and the other end of the exhaust passage <NUM> is communicated with the first gas outlet port <NUM>, and the exhaust passage <NUM> and the inner chamber of the housing <NUM> are not communicated with each other, that is to say, the exhaust passage <NUM> through which the first working chamber flows during exhaustion is not communicated with the inner chamber of the housing <NUM>, but directly exhausts gas out of the housing <NUM> of the compressor <NUM> through the first gas outlet port <NUM> of the housing <NUM>. By adding the first separator <NUM> between the first bearing <NUM> and the first cylinder <NUM>, and making the first working chamber communicate with the first exhaust port <NUM> provided on the first separator <NUM> for exhaustion, the sealing performance in the exhaust process of the first working chamber is effectively increased, that is to say, leakage of the first working chamber into the inner chamber of the housing <NUM> upon exhaustion is reduced, so that the pressure of the gas exhausted from the first working chamber can be increased, such that the actual displacement from the first working chamber can be closer to theoretically designed displacement, thereby improving the energy efficiency of the compressor <NUM>.

Furthermore, the compressor <NUM> further comprises a second cylinder <NUM>, and in particular, the second cylinder <NUM> comprises a second working chamber, wherein the second cylinder <NUM> and the first cylinder <NUM> are distributed on an axial direction of the housing <NUM>, and two cylinders compress the gas independently, so as to facilitate dual-pressure exhaustion of the compressor <NUM>. In particular, both the first cylinder <NUM> and the second cylinder <NUM> can achieve intake, compression and exhaust processes of the refrigerant, and this arrangement avoids the problem of high cost caused by providing multiple compressors <NUM> to implement the double exhaust function in the related art, and one compressor <NUM> in the present invention can achieve the functions that can be implemented by two compressors <NUM> in the related art, reducing the machining cost, reducing the occupied space of the compressor <NUM>, and facilitating the installation process of the compressor <NUM>. Furthermore, in the present invention, it is defined that the exhaust pressure of the first working chamber is greater than the exhaust pressure of the second working chamber, that is to say, it is defined that the exhaust pressure of the first cylinder <NUM> and the second cylinder <NUM> are different. Different exhaust pressure can make the time when the refrigerant reaches the predetermined temperature and the energy required to be different, and it can be understood that the first cylinder <NUM> and the second cylinder <NUM> achieve different exhaust pressure according to different usage requirements of the compressor <NUM>. As a result, the condenser corresponding to the first cylinder <NUM> and the second cylinder <NUM> can achieve the condensation function efficiently, avoid wasting energy, make full use of the dual exhaust advantages of the double-cylinder compressor <NUM>, and significantly improve the energy efficiency of the compressor <NUM>.

Note that the compressor <NUM> also comprises a first piston and a second piston, the first cylinder <NUM> is processed and formed with the first accommodating chamber, and the first piston is eccentrically arranged in the first accommodating chamber, the second cylinder <NUM> is also machined with a second accommodating chamber, the second piston is eccentrically positioned within the second accommodating chamber, and the first piston can reciprocate within the first accommodating chamber, so that the first piston achieves intake, compression of air and exhaust processes by changing a volume of the first working chamber, and the second piston can reciprocate within the second accommodating chamber, so that the second piston achieves intake, compression of air and exhaust processes by changing the volume of the second working chamber, the double exhaust function is achieved by providing two cylinders and two pistons, the first cylinder <NUM> and the second cylinder <NUM> both are able to achieve intake, compression and exhaust processes of the refrigerant; this arrangement avoids the problem of high cost caused by arranging multiple compressors <NUM> to achieve double exhaust function in the related art; one compressor <NUM> in the present invention can achieve the functions which can be achieved by two compressors <NUM> in the related art, reducing the processing cost and reducing the occupied space of the compressors <NUM>, and it is also advantageous to facilitate installation of the compressors <NUM>.

It should be noted that, in the case of the double-cylinder compressor <NUM>, the first separator <NUM> defined in the present invention is provided between the first bearing <NUM> and the first cylinder <NUM>, but the first bearing <NUM> and the first cylinder <NUM> are not specifically defined as an upper bearing and an upper cylinder in the double-cylinder compressor <NUM>. It can be understood that the first bearing <NUM> can be an upper bearing located on an axial direction of the compressor <NUM> housing <NUM>, and the first cylinder <NUM> can be a lower bearing and a lower cylinder located on the axial direction of the compressor <NUM> housing <NUM>, that is, the first separator <NUM> may be located between the upper bearing and the upper cylinder, or may be located between the lower bearing and the lower cylinder, and when the first separator <NUM> is located between the upper bearing and the upper cylinder, the first gas outlet port <NUM> is communicated with the first exhaust port <NUM> via an exhaust passage <NUM> to the working chamber in the upper cylinder, and similarly, if the first separator <NUM> is located in the lower bearing and the lower cylinder, the first gas outlet port <NUM> is communicated with the first exhaust port <NUM> via the exhaust passage <NUM> to the working chamber in the lower cylinder, so that the corresponding working chamber can be sealed by adding the first separator <NUM>, reduce the leakage to the inner chamber of the housing <NUM> when the working chamber is exhausted air, achieving an increase in the energy efficiency of the compressor <NUM>.

In another embodiment, a first separator <NUM> is provided between a second bearing <NUM> and a second cylinder <NUM>, and a first exhaust port <NUM> is provided on a side of the first separator <NUM> facing the second cylinder <NUM>. The first exhaust port <NUM> is communicated with the second working chamber, and a second exhaust passage <NUM> is provided on a side of the first separator <NUM> facing the second bearing <NUM>; a side of the second bearing <NUM> facing the first separator is provided with a first exhaust passage <NUM>, and one end of the first exhaust passage <NUM> is communicated with a second exhaust passage <NUM>; the other end of the first exhaust passage <NUM> is provided inside the second bearing <NUM> and extends along the radial direction of the second bearing <NUM> until the end of the second bearing <NUM> is communicated with a first gas outlet port <NUM>, so that the second working chamber exhausts gas from the first exhaust port <NUM> to the housing via the second exhaust passage <NUM>, the first exhaust passage <NUM>, and the first gas outlet port <NUM>. The first working chamber then diffuses from the third exhaust port, through an outlet passage <NUM>, to the inner cavity of the housing, and exhausts gas to the housing through the second gas outlet port <NUM> at the top. By placing the first separator <NUM> between the second bearing <NUM> and the second cylinder <NUM>, the exhaust process of the second working chamber can be sealed to prevent leakage to the inner chamber of the housing when the second working chamber exhausts air, thereby increasing the pressure of the gas exhausted from the second working chamber, allowing the actual displacement from the second working chamber can be closer to theoretically designed displacement, thereby increasing the energy efficiency of the compressor <NUM>.

The specific structure of the exhaust passage <NUM> is explained and described on the basis of the above-mentioned embodiment, as shown in <FIG>, <FIG>, <FIG>, <FIG> and <FIG>, and further, the exhaust passage <NUM> comprises a first exhaust passage <NUM> and a second exhaust passage <NUM>, wherein the first exhaust passage <NUM> is provided on the first bearing <NUM>, the first exhaust passage <NUM> is communicated with the first gas outlet port <NUM>, and the second exhaust passage <NUM> is provided on the first separator <NUM>, one end of the second exhaust passage <NUM> is communicated with the first exhaust passage <NUM> and the other end of the second exhaust passage <NUM> is communicated with the first exhaust port <NUM>.

In this embodiment, the exhaust passage <NUM> comprises the first exhaust passage <NUM> and the second exhaust passage <NUM>, wherein since the exhaust passage <NUM> is not communicated with the inner chamber of the housing <NUM>, that is, neither the first exhaust passage <NUM> nor the second exhaust passage <NUM> is communicated with the inner chamber of the housing <NUM>, it is guaranteed that the first working chamber communicated with the exhaust passage <NUM> can be separately exhausted from the first gas outlet port <NUM>. Specifically, the first exhaust passage <NUM> is arranged on the first bearing <NUM>, and the second exhaust passage <NUM> is arranged on the first separator <NUM>, wherein the second exhaust passage <NUM> is arranged on one side of the first separator <NUM> near the first bearing <NUM>; the second exhaust passage <NUM> is communicated with the first exhaust port <NUM>, and one end of the first exhaust passage <NUM> communicated with the second exhaust passage <NUM> is provided on one side of the first bearing <NUM> close to the first separator <NUM>; and the first exhaust passage <NUM> extends inside the first bearing <NUM> along the radial direction to the end of the first bearing <NUM>, and is communicated with the first gas outlet port <NUM> through the end of the first bearing <NUM>. By placing the first exhaust passage <NUM> and second exhaust passage <NUM> on the first bearing <NUM> and first separator <NUM> and combining the same into a sealed chamber, the sealing effect of the exhaust passage <NUM> is improved, further preventing leakage of the first working chamber to the inner chamber of the housing <NUM> during exhaustion, increasing energy efficiency of the compressor <NUM>.

In addition, by arranging the exhaust passage <NUM> on the first separator <NUM> and the first bearing <NUM> and communicating the same with the first cylinder <NUM>, the length originally required by the exhaust passage <NUM> is shortened, the leakage to the inner chamber of the housing <NUM> when the first working chamber is exhausted is further reduced, the exhaust pressure of the first working chamber is improved, and it is unnecessary to additionally provide exhaust passage <NUM> in the location of the first cylinder <NUM> away from the sliding vane slot, thereby effectively reducing the damage to the first cylinder <NUM>, ensuring the rigidity of the first cylinder <NUM>, and thus improving the use reliability of the compressor <NUM>.

Note that a second exhaust passage is provided on a side of the first separator <NUM> facing the first bearing <NUM>, and the second exhaust passage is communicated with the first exhaust port <NUM>, a first exhaust passage is provided on a side of the first bearing <NUM> facing the first separator <NUM>, the first exhaust passage and the second exhaust passage together form a sealed chamber, and a third exhaust passage is also provided inside the first bearing <NUM>; the third exhaust passage is communicated with the sealed chamber, so that the sealed cavity formed by the first exhaust passage and the second exhaust passage and the third exhaust passage together constitute an exhaust passage which is not in communication with the inner cavity of the housing, and the exhaust passage is in communication with the first working chamber, so that when the first working chamber intakes, compresses and exhausts air, the first exhaust port <NUM> is communicated to the first gas outlet port <NUM> via the exhaust passage, and is directly exhausted out of the housing <NUM> of the compressor <NUM> through the first gas outlet port <NUM> of the housing <NUM>. Furthermore, by adding the first separator <NUM> between the first bearing <NUM> and the first cylinder <NUM>, the leakage of the first working chamber into the inner cavity of the housing <NUM> when the first working chamber is exhausted is effectively reduced, so that the pressure of the gas exhausted from the first working chamber can be increased, so that the actual displacement from the first working chamber can be closer to theoretically designed displacement, thereby improving the energy efficiency of the compressor <NUM>.

On the basis of any of the above-mentioned embodiments, further, the first bearing <NUM> is provided with a shaft hole, the first exhaust passage <NUM> comprises a first side wall near one side of the shaft hole, and the minimum distance between the first side wall and the side wall of the shaft hole is L1, wherein L1 ≥ <NUM>.

In this embodiment, the first exhaust passage <NUM> has a first side wall on the side of the shaft hole adjacent the first bearing <NUM>, the minimum distance between the first side wall and the shaft hole side wall being greater than or equal to <NUM>, i.e., by defining the minimum distance between the first side wall and the shaft hole side wall, i.e., defining the position of the first exhaust passage <NUM> relative to the shaft hole, if the distance between the first side wall and the shaft hole side wall is too small, there is an increased risk that the exhaust passage <NUM> will go to the inner cavity of the housing <NUM> during exhaustion of the first working chamber. Therefore, the location of the first exhaust passage <NUM> with respect to the shaft hole of the first bearing <NUM> is defined, so that the sealing performance of the first exhaust passage <NUM> can be guaranteed, the leakage of the first working chamber during exhaustion can be further prevented, and the energy efficiency of the compressor <NUM> can be improved.

As shown in <FIG> and <FIG>, further, a shaft hole is provided on the first separator <NUM>, the second exhaust passage <NUM> comprises a second side wall near one side of the shaft hole, and the minimum distance between the second side wall and the sidewall of the shaft hole is L2, wherein L2 ≥ <NUM>.

In this embodiment, the second exhaust passage <NUM> has a second side wall on the side of the shaft hole near the first separator <NUM>, the minimum distance between the second side wall and the shaft hole sidewall of the first separator <NUM> is greater than or equal to <NUM>, that is to say, by defining the minimum distance between the second side wall and the shaft hole sidewall of the first separator <NUM>, that is to say, the location where the second exhaust passage <NUM> is located relative to the shaft hole of the first separator <NUM> is defined, if the second between the second side wall and the side wall of the shaft hole is too small, there is an increased risk of leakage of the exhaust passage <NUM> into the interior of the housing <NUM> during exhaustion of the first working chamber. Therefore, the location of the second exhaust passage <NUM> with respect to the shaft hole of the first separator <NUM> is defined such that the sealing performance of the second exhaust passage <NUM> can be secured, further preventing leakage of the first working chamber during exhaustion, and improving the energy efficiency of the compressor <NUM>.

On the basis of any one of the above-mentioned embodiments, the relationship between a thickness of the first separator <NUM>, a depth of the second exhaust passage <NUM> and a height of the first exhaust port <NUM> is defined; as shown in <FIG>, further, the thickness of the first separator <NUM> is H1; the depth of the second exhaust passage <NUM> along an axial direction of the housing <NUM> is D1, and the height of the first exhaust port <NUM> along an axial direction of the housing <NUM> is h1, wherein the thickness H1 of the first separator <NUM>, the depth D1 of the second exhaust passage <NUM> and the height h1 of the first exhaust port <NUM> satisfy H1-D1 > <NUM> * (D1-h1).

In this embodiment, the relationship between the thickness of the first separator <NUM>, the depth of the second exhaust passage <NUM> along the axial direction of the housing <NUM>, and the height of the first exhaust port <NUM> along the axial direction of the housing <NUM> is defined so as to satisfy H1-D1 > <NUM> * (D1-h1), that is to say, the height of the first exhaust port <NUM> relative to the first separator <NUM> and the depth of the second exhaust passage <NUM> provided on the first separator <NUM> are defined. Specifically, if the second exhaust passage <NUM> is too deep, the structural strength of the first separator <NUM> will be reduced, and the service stability of the compressor <NUM> will be reduced. If the second exhaust passage <NUM> is too shallow, the effective flow area of the exhaust passage <NUM> cannot be guaranteed; at the same time, if the height of the first exhaust port <NUM> in the axial direction of the housing <NUM> is too high, the depth of a section of the second exhaust passage <NUM> communicating with the first exhaust port <NUM> is shallow, and then the flow area of the gas cannot be guaranteed; if the height of the first exhaust port <NUM> in the axial direction of the housing <NUM> is too low, the second exhaust passage <NUM> communicates with the first exhaust passage <NUM> and the first exhaust port <NUM> at the same time; the depth of the channel required to be provided is relatively deep, thereby reducing the structural strength of the first separator <NUM>; therefore, the relationship between the thickness of the first separator <NUM>, the depth of the second exhaust channel <NUM> in the axial direction of the housing <NUM> and the height of the first exhaust port <NUM> along the axial direction of the housing <NUM> is defined, that is, the machining process of the first separator <NUM> is defined, thereby ensuring the flatness of the sealing surface of the first separator <NUM>, and at the same time improving the service stability of the compressor <NUM>, further preventing the leakage of the first working chamber exhaust gas to the inner cavity of the housing <NUM>, improving the energy efficiency of the compressor <NUM>.

On the basis of the above-mentioned embodiment, the relationship between a thickness of the first bearing <NUM>, a depth of the first exhaust passage <NUM> and the height of the first exhaust port <NUM> is defined, and as shown in <FIG>, further, the thickness of the first bearing <NUM> is H2, and the depth of the first exhaust passage <NUM> along the axial direction of the housing <NUM> is D2, wherein the thickness H2 of the first bearing <NUM>, the depth D2 of the first exhaust passage <NUM> and the height h1 of the first exhaust port <NUM> satisfy H2-D2 > <NUM> * (D2-h1).

In this embodiment, the relationship between the thickness of the first bearing <NUM>, the depth of the first exhaust passage <NUM> along the axial direction of the housing <NUM>, and the height of the first exhaust port <NUM> along the axial direction of the housing <NUM> is defined so as to satisfy H2-D2 > <NUM> * (D2-h1), that is to say, the depth of the second exhaust passage <NUM> provided on the first bearing <NUM> is defined, that is, the effective flow area of the sealed exhaust passage <NUM> communicating with the first working chamber is defined, specifically, if the first exhaust passage <NUM> is too deep, the structural strength of the first bearing <NUM> would be reduced and the service stability of the compressor <NUM> would be reduced; if the first exhaust passage <NUM> is too shallow, the effective flow area of the exhaust passage <NUM> would not be guaranteed; therefore, the relationship between the thickness of the first bearing <NUM>, the depth of the first exhaust passage <NUM> in the axial direction of the housing <NUM> and the height of the first exhaust port <NUM> along the axial direction of the housing <NUM> is defined, that is, the machining process of the first bearing <NUM> is defined, thereby ensuring the flatness of the sealing surface of the first bearing <NUM>; while improving the operational stability of the compressor <NUM>, leakage of the first working chamber into the inner chamber of the housing <NUM> is further prevented, improving the energy efficiency of the compressor <NUM>.

Based on any of the embodiments described above, further, the maximum cross-sectional area of the first exhaust port <NUM> is Sl and the minimum cross-sectional area of the exhaust passage <NUM> is S2, wherein Sl and S2 satisfy <MAT>.

In this embodiment, a range of values of the ratio of the maximum cross-sectional area of the first exhaust port <NUM> to the minimum cross-sectional area of the exhaust passage <NUM> is further defined, specifically, the ratio of the maximum cross-sectional area of the first exhaust port <NUM> to the minimum cross-sectional area of the exhaust passage <NUM> is greater than or equal to <NUM>, so that the flow area of the exhaust passage <NUM> can be guaranteed.

On the basis of any of the above-mentioned embodiments, further, a connection line between the center point of the first exhaust port <NUM> and the center point of the first separator <NUM> extends as a first face in the axial direction of the housing <NUM>; a side of the exhaust passage <NUM> close to the first gas outlet port <NUM> comprises a second exhaust port, the second exhaust port is in communicated with the first gas outlet port <NUM> and the first exhaust port <NUM> respectively, the center line of the second exhaust port is able to pass through the center of the first bearing <NUM>, and the center line extends in the axial direction of the housing <NUM> as a second face; an angle θis formed between the first face and the second face, wherein the angle θ satisfies <NUM>°≤θ≤<NUM>°.

In this embodiment, a range of values of included angle between the centerline of the exhaust passage <NUM> and the first exhaust port <NUM> along the radial direction of the first separator <NUM> is defined. Specifically, the center point of the first exhaust port <NUM> is connected to the axis of the first separator <NUM>, and the side of the exhaust passage <NUM> near the first gas outlet port <NUM> has the second exhaust port, the centerline of the second exhaust port can pass through the center of the first bearing <NUM>, and the connecting line and the centerline of the second exhaust port respectively extend along the axial direction of the housing <NUM> as a first face and a second face, wherein the first face and the second face form an angle θ on the extended direction, and the angle θ satisfies <NUM>°≤θ≤<NUM>°, which can reduce the tooling interference during the assembly process between the components and parts of the compressor <NUM>, facilitate the manufacture of the compressor <NUM> and improve the assembly efficiency.

On the basis of any one of the above-mentioned embodiments, as shown in <FIG> and <FIG>, the compressor <NUM> further comprises: a second bearing <NUM> spaced apart from the first bearing <NUM>, and the first cylinder <NUM> and the second cylinder <NUM> are located between the first bearing <NUM> and the second bearing <NUM>.

In this embodiment, the compressor <NUM> further comprises a second bearing <NUM>, wherein the second bearing <NUM> and the first bearing <NUM> are spaced apart on an axial direction of the housing <NUM>, and the first cylinder <NUM> and the second cylinder <NUM> are provided between the first bearing <NUM> and the second bearing <NUM>, and specifically, the first bearing <NUM> can provide support for the crankshaft <NUM>, and the second bearing <NUM> can provide support for the first cylinder <NUM> and the second cylinder <NUM>, and improve the installation stability of the first cylinder <NUM> and the second cylinder <NUM>.

As shown in <FIG> and <FIG>, the compressor <NUM> further includes: a second separator <NUM> located between the first cylinder <NUM> and the second cylinder <NUM>; the first bearing <NUM> and the second separator <NUM> abut against the first cylinder <NUM>, and the second bearing <NUM> and the second separator <NUM> abut against the second cylinder <NUM>.

In this embodiment, the compressor <NUM> further comprises a second separator <NUM>, and in particular, the second separator <NUM> is arranged between the first cylinder <NUM> and the second cylinder <NUM>, the first cylinder <NUM> and the second cylinder <NUM> are further arranged between the first bearing <NUM> and the second bearing <NUM>, so that the first bearing <NUM> and the second separator <NUM> block the first accommodating chamber of the first cylinder <NUM> therebetween, and the second bearing <NUM> and the second separator <NUM> block the second accommodating chamber of the second cylinder <NUM> therebetween.

In an embodiment, further, the second separator <NUM> comprises a first plate and a second plate, and the first plate and the second plate form a chamber, so that a third exhaust port can be provided on the second plate, so that the compressed air in the second working chamber can be exhausted into the chamber of the second separator <NUM> via a third exhaust port, and then the compressed air is exhausted into the second gas outlet port <NUM> via the gas outlet passage <NUM>; the first separator <NUM> is provided with a first exhaust port <NUM>, and the compressed air in the first working chamber can be exhausted to the first gas outlet port <NUM> via the first exhaust port <NUM>, guaranteeing that first cylinder <NUM> and second cylinder <NUM> can achieve exhaust function independently of each other, and achieving double pressure exhaust function of the compressor <NUM>.

In yet another embodiment, further, the second separator <NUM> includes a first plate, a second plate, and a separator, the separator separating the chamber within the first plate and the second plate, thereby separating the chamber into two mutually independent ones. At this time, a first exhaust port <NUM> may be provided on the first plate, so that the compressed air in the first working chamber can be exhausted to one of the chambers through the first exhaust port <NUM>, and then the compressed air is exhausted to the first gas outlet port <NUM> through the exhaust passage <NUM>; a third exhaust port may also be provided on the second plate, and the compressed air in the second working chamber can be exhausted to the other chambers through the third exhaust port, and then the compressed air is exhausted to the second gas outlet port <NUM> through the inner chamber of the housing <NUM>. It is guaranteed that the exhaust processes of the first cylinder <NUM> and the second cylinder <NUM> do not affect each other, achieving the double pressure exhaust function of the compressor <NUM>.

Further, the compressor <NUM> further comprises a first sliding vane assembly and a second sliding vane assembly, wherein the first cylinder <NUM> comprises a first sliding vane slot, the second cylinder <NUM> comprises a second sliding vane slot, the first sliding vane assembly is arranged in the first sliding vane slot, the second sliding vane assembly is arranged in the second sliding vane slot, the first sliding vane assembly, the outer peripheral surface of the first piston and the inner surface of the first cylinder <NUM> form a first working chamber, the second sliding vane assembly, the outer peripheral surface of the second piston and the inner surface of the second cylinder <NUM> form a second working chamber, and the first piston movement can change the volume of the first working chamber to compress air, and the second piston movement can change the volume of the second working chamber to compress the air.

On the basis of the above-mentioned embodiment, further, the first sliding vane assembly comprises a first sliding vane and a first elastic member, wherein the first sliding vane compresses the outer peripheral surface of the first piston, and the first elastic member is connected to an end of the first sliding vane away from the first piston, so that during the movement of the first piston, the first elastic member can push the first sliding vane to always keep compressing the outer peripheral surface of the first piston, ensuring the sealing performance of the first working chamber. Alternatively, the first sliding vane assembly includes the first sliding vane, and the first sliding vane can be integrated with the first piston to prevent the first sliding vane from falling out of the first sliding vane slot, ensure the stable installation of the first sliding vane, improve the reliability of product, and the integrated structure has good mechanical properties, thus improving the connection strength between the first sliding vane and the first piston. In addition, the first sliding vane is integrally formed with the first piston, facilitating mass production, improving the processing efficiency of the product and reducing the processing cost of the product. Of course, the first sliding vane can also be hingedly connected with the first piston, and can also serve to prevent the first sliding vane from falling out of the first sliding vane slot, so as to stabilize the installation of the first sliding vane and improve the reliability of the product.

The second sliding vane assembly includes the second sliding vane and the second elastic member. The second sliding vane compresses the outer peripheral surface of the second piston, and the second elastic member is connected to the end of the second sliding vane away from the second piston, so that during the movement of the second piston, the second elastic member can push the second sliding vane to always compress the outer peripheral surface of the second piston, ensuring the sealing performance of the second working chamber. Alternatively, the second sliding vane assembly includes a second sliding vane which can be integrated with the second piston to prevent the second sliding vane from falling out of the second sliding vane slot, ensure the stable installation of the second sliding vane, improve the reliability of product, and the integrated structure has good mechanical properties, thus improving the connection strength between the second sliding vane and the second piston. In addition, the second sliding vane is integrally formed with the second piston, which facilitates mass production, improves the processing efficiency of the product and reduces the processing cost of the product. Of course, the second sliding vane can also be hingedly connected with the second piston, and can also serve to prevent the second sliding vane from falling out of the second sliding vane slot, so as to stabilize the installation of the second sliding vane and improve the reliability of the product.

On the basis of any one of the above-mentioned embodiments, as shown in <FIG>, the compressor <NUM> further comprises: a crankshaft <NUM> and a motor assembly, wherein the motor assembly includes a stator and a rotor, the crankshaft <NUM> has a first eccentric portion and a second eccentric portion, the first piston is connected to the first eccentric portion, the second piston is connected to the second eccentric portion; a motor assembly connected to the crankshaft <NUM> to drive the crankshaft <NUM> to rotate.

The compressor <NUM> further comprises a crankshaft <NUM> and a motor assembly, wherein the motor assembly can drive the crankshaft <NUM> to rotate, the crankshaft <NUM> has a first eccentric portion connected to the first piston and a second eccentric portion connected to the second piston, when the crankshaft <NUM> rotates, the first eccentric portion on the crankshaft <NUM> drives the first piston to rotate, and the rotating first piston achieves functions of intake, compression and exhaustion of the air.

The second eccentric portion on the crankshaft <NUM> rotates the second piston, and the rotating second piston achieves intake, compression and exhaustion functions on the air.

As the crankshaft <NUM> rotates the first piston and the second piston, the low pressure gas passes from the first intake passage into the first working chamber of the first cylinder <NUM>, completing the process of intake, compression and exhaust in the first working chamber, and exhausting via the first gas outlet passage <NUM>. The other low-pressure gas second intake passage enters the second working chamber of the second cylinder <NUM> to complete the process of intake, compression and exhaustion in the second working chamber, and gas is exhausted through the second gas outlet passage <NUM>, and the crankshaft <NUM> completes the exhaust process twice per revolution.

As shown in <FIG>, the compressor <NUM> further comprises: a second gas outlet port <NUM> provided on the housing <NUM>; a third exhaust port communicated with the second working chamber, a third exhaust port communicated with the second gas outlet port <NUM> via the inner chamber of the housing <NUM>; a gas outlet passage <NUM> through which a third exhaust port is communicated with an inner chamber of the housing <NUM>; the gas outlet passage <NUM> is not communicated with the exhaust passage <NUM>.

In this embodiment, the compressor <NUM> further comprises a second gas outlet port <NUM>, and specifically, the second gas outlet port <NUM> is provided at the top of the housing <NUM>, and the third exhaust port is communicated with the second working chamber, wherein the second working chamber communicates from the third exhaust port to the inner chamber of the housing <NUM> via the gas outlet passage <NUM>, and gas is exhausted out of the housing <NUM> from the second gas outlet port <NUM>. That is, the gas in the second working chamber is exhausted through the third exhaust outlet, diffused into the inner chamber of the housing <NUM>, and then exhausted through the second gas outlet port <NUM>. Since the exhaust pressure of the second cylinder <NUM> is smaller than the exhaust pressure of the first cylinder <NUM>, the gas pressure in the inner chamber of the housing <NUM> is relatively low, facilitating the oil return of the compressor <NUM>, and facilitating the reliability for ensuring the operation of the compressor <NUM>.

Furthermore, the compressor <NUM> further comprises a first seal and a second seal, and in particular, the first seal partially covers the first bearing <NUM> and the second seal partially covers the second bearing <NUM>, and by providing the first seal and the second seal, the first bearing <NUM> and the second bearing <NUM> can be partially covered by the first seal and the second seal, respectively, which can effectively reduce the noise generated during the operation of the compressor <NUM> and improve the use experience of the user.

In addition, an exhaust chamber is formed between the second seal and the second bearing <NUM>, the exhaust chamber communicated with the gas outlet passage <NUM> and the third exhaust port, that is, the exhaust chamber communicated with the second working chamber. By communicating the second working chamber with the gas outlet passage <NUM>, and making the gas outlet passage <NUM> penetrate the second bearing <NUM>, the second cylinder <NUM>, the second separator <NUM>, the first cylinder <NUM> and the first bearing <NUM>, and then communicating with the inner chamber of the housing <NUM>, so that the gas in the second working chamber can reach the side where the first cylinder <NUM> is located via the gas outlet passage <NUM>, and then diffuse into the inner chamber of the housing <NUM> and communicate with the second gas outlet port <NUM> to complete the exhaust process of the second working chamber.

Note that the first seal and the second seal are cover plates or silencers. The first seal and the second seal are connected at other positions by bolts or welding.

In an embodiment, the compressor <NUM> further comprises a first exhaust valve <NUM> and a second exhaust valve, and in particular, the first exhaust valve is arranged on the first exhaust port <NUM> and the second exhaust valve is arranged on the gas outlet passage <NUM>. Among them, the first exhaust valve <NUM> can open and close the first exhaust port <NUM>, and the second exhaust valve <NUM> can open and close the outlet passage <NUM>.

On the basis of any one of the above-mentioned embodiments, as shown in <FIG>, the compressor <NUM> further comprises: the housing <NUM> is provided with an intake port, and the compressor <NUM> further comprises a first intake passage <NUM> and a second intake passage <NUM>, wherein the first working chamber is communicated with the intake port via the first intake passage <NUM>, and the second working chamber is communicated with the intake port via the second intake passage <NUM>. Furthermore, the first intake passage <NUM> is communicated with the second intake passage <NUM>.

In this embodiment, an intake port may be provided on the housing <NUM> such that both the first working chamber and the second working chamber communicate with an intake port. Specifically, the first working chamber communicates with the intake port via the first intake passage <NUM>, the second working chamber communicates with the intake port via the second intake passage <NUM>, and the first intake passage <NUM> and the second intake passage <NUM> optionally communicate with each other, so as to reduce the total length of the intake passage, avoid affecting the rigidity due to excessive machining of components such as a cylinder and a bearing, and reduce the production cost.

In another embodiment, as shown in <FIG>, the compressor <NUM> further comprises: the housing <NUM> is provided with two intake ports, and the compressor <NUM> further comprises a first intake passage <NUM> and a second intake passage <NUM>, wherein the first working chamber is communicated with one intake port via the first intake passage <NUM>, and the second working chamber is communicated with the other intake port via the second intake passage <NUM>, and the first intake passage <NUM> and the second intake passage <NUM> are not communicated with each other.

In this embodiment, it is advantageous to ensure the intake amount of each cylinder by providing two intake ports on the housing <NUM> and putting one working chamber communicated with one intake port so that the gas in the two intake passages does not mix with each other.

Note that the first intake passage <NUM> is provided on the first cylinder <NUM> or the first bearing <NUM> or the second separator <NUM>, and the second intake passage <NUM> is provided on the second cylinder <NUM> or the second bearing <NUM> or the second separator <NUM>.

In an embodiment of the present embodiment, the first intake passage <NUM> is arranged on the first cylinder <NUM>, and the gas enters the first working chamber through the first intake passage <NUM>, so as to achieve the process of intaking the gas into the first working chamber; a second intake passage <NUM> is provided on the second cylinder <NUM> and is communicated with the second working chamber, and the gas enters the second working chamber through the second intake passage <NUM>, so as to implement a process of intaking the gas into the second working chamber.

In another embodiment, the first intake passage <NUM> is arranged on the first cylinder <NUM> and is communicated with the first working chamber, and the gas enters the first working chamber via the first intake passage <NUM> to achieve the process of intaking the gas into the first working chamber; a second intake passage <NUM> is provided on the second bearing <NUM> and is communicated with the second working chamber, and the gas enters the second working chamber through the second intake passage <NUM>, thereby enabling the intake of the gas into the second working chamber.

In yet another embodiment, the first intake passage <NUM> is arranged on the first bearing <NUM> and is communicated with the first working chamber, and the gas enters the first working chamber through the first intake passage <NUM>, thereby achieving a process of intaking the gas into the first working chamber; the second intake passage <NUM> is placed on the second cylinder <NUM>, and the gas enters the second working chamber through the second intake passage <NUM>, thereby implementing the process of intaking the gas into the second working chamber.

In yet another embodiment, the first intake passage <NUM> is provided on the first bearing <NUM>, and the gas enters the first working chamber through the first intake passage <NUM>, thereby achieving the process of intaking the gas into the first working chamber; a second intake passage <NUM> is provided on the second bearing <NUM>, and the gas enters the second working chamber through the second intake passage <NUM>, thereby achieving the process of intaking the gas into the second working chamber.

According to a second aspect of the present invention, there is provided a refrigeration device comprising the compressor <NUM> as provided by any one of the above-mentioned embodiments, and therefore all the advantageous technical effects of the compressor <NUM> are provided, which will not be described in detail herein.

In an embodiment, as shown in <FIG>, the refrigeration device further comprises: a first condenser <NUM> communicated with the first gas outlet port <NUM> of the compressor <NUM>; a first throttle element <NUM> communicated with the first condenser <NUM>; a first evaporator <NUM> communicated with the first throttle element <NUM>; a first reservoir <NUM>, a first intake passage <NUM> communicating the first evaporator <NUM> with the compressor <NUM>; a second condenser <NUM> communicated with the second gas outlet port <NUM> of the compressor <NUM>; a second throttle element <NUM> communicated with the second condenser <NUM>; a second evaporator <NUM> communicated with the second throttle element <NUM>; a second reservoir <NUM>, a second intake passage <NUM> communicating the second evaporator <NUM> with the compressor <NUM>.

In this embodiment, the compressor <NUM> and the first condenser <NUM>, the first throttle element <NUM>, the first evaporator <NUM> and the first reservoir <NUM> form a first group of refrigeration systems, and the compressor <NUM> and the second condenser <NUM>, the second throttle element <NUM>, the second evaporator <NUM> and the second reservoir <NUM> form a second group of refrigeration systems, wherein the two groups of refrigeration systems are independent from each other, that is, the refrigeration device realizes the multiple exhaust functions realized by multiple compressors <NUM> in the related art by one compressor <NUM>, thereby reducing the processing cost of the refrigeration device. The space occupied by the refrigeration device is also reduced, and the convenience of installing the internal components of the refrigeration device is improved; since the exhaust pressure of the first cylinder <NUM> and the second cylinder <NUM> is different, the exhaust pressure reaching the first condenser <NUM> and the second condenser <NUM> is different, so that the refrigeration device can have a double condensation temperature and a double evaporation temperature, which is beneficial to realize the cascade utilization of energy and improve the energy efficiency of the refrigeration device. Especially in case where the displacement of first cylinder <NUM> and second cylinder <NUM> is different, so that the amount of refrigerant condensed by the first condenser <NUM> and the second condenser <NUM> are also different, further improving the energy efficiency of the refrigeration device.

The flow process of the refrigerant is as follows.

The first gas outlet port <NUM> of the compressor <NUM> is connected to the first condenser <NUM> via components such as pipelines, and the refrigerant flows into the first evaporator <NUM> via the first expansion valve, and flows from the first evaporator <NUM> into the first intake passage <NUM> of the first cylinder <NUM> via the first intake passage of the first reservoir <NUM>; the first gas outlet port <NUM> is connected to the second condenser <NUM> through a pipe assembly, and the refrigerant flows into the second evaporator <NUM> through the second expansion valve, and flows from the second evaporator <NUM> into the second intake passage <NUM> of the second cylinder <NUM> through the second reservoir <NUM>.

In another embodiment, as shown in <FIG>, the refrigeration device further comprises: a third condenser <NUM> communicated with the first gas outlet port <NUM> of the compressor <NUM>; a third throttle element <NUM> communicated with the third condenser <NUM>; a third evaporator <NUM> communicated with third throttle element <NUM>; a third reservoir <NUM>, a first intake passage <NUM> and a second intake passage <NUM> communicating the third evaporator <NUM> with the compressor <NUM>; a fourth condenser <NUM> communicated with the second gas outlet port <NUM> of the compressor <NUM>; a fourth throttle element <NUM> communicated with the fourth condenser <NUM>; a fourth evaporator <NUM> communicated with the fourth throttle element <NUM>; a third reservoir <NUM> also communicates the fourth evaporator <NUM> with the first intake passage <NUM> and the second intake passage <NUM> of the compressor <NUM>.

In this embodiment, the compressor <NUM> and the third condenser <NUM>, the third throttle element <NUM>, the third evaporator <NUM>, and the third reservoir <NUM> form a third group of refrigeration systems, and the compressor <NUM> and the fourth condenser <NUM>, the fourth throttle element <NUM>, the fourth evaporator <NUM>, and the third reservoir <NUM> form a fourth group of refrigeration systems, wherein two groups of refrigeration systems are independent from each other, that is, a refrigeration device realizes multiple exhaust functions realized by a plurality of compressors <NUM> in the related art by one compressor <NUM>, thereby reducing the processing cost of the refrigeration device. The space occupied by the refrigeration device is also reduced, and the convenience of installing the internal components of the refrigeration device is improved; the first intake passage <NUM> and the second intake passage <NUM> communicate with the third reservoir <NUM>, so that providing one reservoir can satisfy the intake function of the first cylinder <NUM> and the second cylinder <NUM>, reducing the number of components in the refrigeration device, further reducing the processing cost of the refrigeration device, effectively reducing the volume of the refrigeration device, and improving the convenience of installing the refrigeration device. Furthermore, since the exhaust pressure of the first cylinder <NUM> and the second cylinder <NUM> are different, so that the exhaust pressure reaching the third condenser <NUM> and the fourth condenser <NUM> are different, the refrigeration device can be provided with the double condensing temperature and the double evaporating temperature, facilitating the cascade utilization of energy, and improving the energy efficiency of the refrigeration device. Especially in case where the displacement of the first cylinder <NUM> and the second cylinder <NUM> are different, so that the amount of the refrigerant condensed by the third condenser <NUM> and the fourth condenser <NUM> is also different, further improving the energy efficiency of the refrigeration device.

The above-mentioned two embodiments achieve the function of double exhaust parameters of a single compressor <NUM>, and make use of heat with double high and low temperatures to effectively save energy consumption. Meanwhile, the range of the parameter ratio of the double cylinders is reasonably specified, the advantages of double-row circulation can be fully exerted, and the energy efficiency is improved.

Claim 1:
A compressor (<NUM>), comprising: a housing (<NUM>), wherein the housing (<NUM>) is provided with a first gas outlet port (<NUM>) and a second gas outlet port (<NUM>); a first bearing (<NUM>) provided in the housing (<NUM>); a first cylinder (<NUM>) provided in the housing (<NUM>) and comprising a first working chamber; a second cylinder (<NUM>) provided in the housing (<NUM>) and comprising a second working chamber, the second working chamber being communicated with the second gas outlet port (<NUM>) via an inner chamber of the housing (<NUM>); a five first exhaust port (<NUM>) being communicated with the first working chamber; and an exhaust passage (<NUM>) located within the housing (<NUM>), the first exhaust port (<NUM>) being communicated with the first gas outlet port (<NUM>) via the exhaust passage (<NUM>), the exhaust passage (<NUM>) being not communicated with the inner chamber of the housing (<NUM>); wherein the exhaust pressure of the first working chamber is greater than the exhaust pressure of the second working chamber, characterized by
a first separator (<NUM>) located between the first bearing (<NUM>) and the first cylinder (<NUM>), the first exhaust port (<NUM>) being provided on the first separator (<NUM>).