Patent Publication Number: US-2023152033-A1

Title: Refrigerator

Description:
TECHNICAL FIELD 
     The present invention relates to the technical field of refrigerating devices, and particularly to a refrigerator. 
     BACKGROUND 
     With the improvement of living conditions, people are having higher and higher requirements for household environment. A brief and fashionable kitchen appliance decoration concept and intelligent home appeal to people. A refrigerator, as an indispensable kitchen electrical appliance, has a certain volume, and protrudes outwards from the wall when placed in the kitchen or the living room, which does not facilitate reasonable arrangement of the space and pleasant appearance. In view of this, to achieve an integral kitchen electrical appliance decoration style, the refrigerator is usually embedded in the cupboard to make it look like a part of the kitchen or living room. 
     However, when a conventional refrigerator is mounted, a space of over 100 mm should be reserved around the refrigerator including a rear wall to ensure ventilation and heat dissipation of the compressor compartment, thereby reducing the energy consumption of the refrigerator. Since there is an enough space between the surrounding of the refrigerator and the wall or other articles, the air inlet and air outlet on the back plate of the compressor compartment in the lower rear portion of the refrigerator do not affect each other. When the refrigerator is embedded into the cupboard, the distance between the surrounding of the refrigerator and the cupboard is short, even the rear wall of the refrigerator abuts against the cupboard wall, and the distance between side walls of the refrigerator and the cupboard wall is shorter than 30 mm to reasonably save the space. As such, hot air discharged from an air outlet on a back plate of a compressor compartment in a lower rear portion of the refrigerator is apt to blend with cold air and flow again through an air inlet into the compressor compartment, thereby causing the temperature of air in the compressor compartment to rise, causing the energy consumption of the refrigerator to increase and the performance of the condenser and the compressor to fall, and even causing safety problems such as reduction of the reliability of the compressor due to undesirable heat dissipation of the compressor compartment. 
     SUMMARY 
     An object of the present invention is to provide a refrigerator to address problem such as the increase of the energy consumption of the refrigerator and reduction of the performance of the condenser and compressor caused by the hot air discharged from the compressor compartment blending with cold air and re-entering the compressor compartment, when the refrigerator is embedded into a cupboard. 
     To achieve one of the above objects, the present invention employs a refrigerator. The refrigerator comprising a compressor compartment disposed in a lower rear portion thereof, the compressor compartment comprising an internal space, a heat dissipation blower disposed in the internal space, a back plate disposed in the rear of the internal space, and a bottom plate disposed below the internal space, wherein the back plate has a first air vent and a second air vent which are disposed side by side in a left-right direction, the first air vent and the second air vent are respectively communicated with a rear space of the refrigerator, the bottom plate is provided with a third air vent communicated with a lower space of the refrigerator, the internal space has a first air path and a second air path, the first air path begins with the second air vent and communicates with the third air vent via the heat dissipation blower, the refrigerator further comprises a baffle, the baffle is movably disposed at the first air vent, and the baffle has a first position for opening the first air vent and a second position for closing the first air vent. 
     In further, the refrigerator further comprises a driving mechanism which drives the baffle to move between the first position and the second position. 
     In further, the refrigerator further comprises a pair of side walls arranged opposite to each other in the left-right direction, the driving mechanism is set as a pull rod, the push rod moves in the left-right direction relative to the baffle to push the baffle to move from the first position to the second position, the push rod has a first end and a second end which are opposed to each other in the left-right direction, and the first end is connected to the baffle; when the baffle is at the first position, the second end protrudes out of the side wall in the left-right direction. 
     In further, an end face of the second end is set as an arcuate surface or an inclined surface gradually away from the side wall from rear to forward. 
     In further, the refrigerator further comprises an elastic member connecting the back plate with the push rod, and the elastic member, through the push rod, drives the baffle to move to return from the second position to the first direction. 
     In further, the back plate is further provided with a guide rail extending in the left-right direction, the elastic member is a spring sleeved on an outer circumference of the push rod, the push rod and the spring are disposed in the guide rail, a limiting portion is disposed on an inner wall of the guide rail, the push rod is provided with a flange, an end of the spring adjacent the first air vent resists the limiting portion, the other end of the spring away from the first air vent resists the flange, and the push rod compresses the spring and pushes the baffle to move from the first position to the second position. 
     In further, the driving mechanism comprises an electromagnet and a flux guide, one of the electromagnet and the flux guide is disposed on the back plate, the other of the electromagnet and the flux guide is disposed on the baffle, and the electromagnet, after being energized, is fitted with the flux guide to drive the baffle to move from the first position to the second position. 
     In further, the refrigerator comprises an elastic return member which drives the baffle to move to return from the second position to the first position. 
     In further, the refrigerator further comprises a control system and a sensor, the sensor detects position information of the refrigerator and an obstacle, the control system is connected with the sensor, and the control system is configured to control the driving mechanism to be energized and turned on according to the position information, so that the driving mechanism drives the baffle to move from the first position to the second position. 
     In further, the refrigerator further comprises a pair of side walls arranged opposite to each other in the left-right direction, and the sensor is a distance sensor disposed on the side wall. 
     In further, a limiting member is provided on the back plate, and when the baffle is at the second position, the limiting member resists the baffle and limits the baffle from moving away from the first position from the second position. 
     In further, the back plate is provided with two flanged edges arranged opposite to each other up and down, the two flanged edges extend in the left-right direction, upper and lower ends of the baffle are respectively inserted in grooves of the flanged edges, and the baffle slides in the left-right direction relative to the flanged edges to reciprocate between the first position and the second position. 
     As compared with the prior art, the present invention has the following advantageous effects: with the baffle being disposed in the refrigerator of the present invention, the baffle may close the first air vent on the back plate of the compressor compartment when the refrigerator is embedded into the cupboard so that the compressor compartment employs the second air path, i.e., the third air vent on the bottom plate of the compressor compartment is communicated with the second air vent on the back plate of the compressor competent via the heat dissipation blower so that the air flows through the third air vent and then through the second air vent for circulation; by changing the air-ingress-air-egress path in the compressor compartment for heat dissipation purpose so that the hot air discharged from the compressor compartment will not blend with cold air sucked into the compressor compartment, the refrigerator in the present invention achieves the efficient heat dissipation of the compressor compartment after the refrigerator is embedded into the cupboard, and avoids the following problems due to use of the first air path: when the air flows through the first air vent on the back plate of the compressor compartment to the second air vent on the back plate of the compressor compartment via the heat dissipation blower in the compressor compartment, the blend of cold air and hot air caused because both the first air vent and second air vent are located on the back plate of the compressor compartment causes a higher temperature of the air in the compressor compartment, thereby causing the reduction of the performance of the compressor and the condenser and the increase of the energy consumption of the refrigerator. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a perspective structural schematic view of a refrigerator and a cupboard according to Embodiment 1 of the present invention; 
         FIG.  2    is a partial cross-sectional view of a compressor compartment according to Embodiment 1 of the present invention; 
         FIG.  3    is a partial cross-sectional view of the compressor compartment according to Embodiment 1 of the present invention as viewed from another angle; 
         FIG.  4    is a structural schematic view of a back plate of the compressor compartment when a baffle is at a second position according to Embodiment 1 of the present invention; 
         FIG.  5    is a structural schematic view of the back plate of the compressor compartment when the baffle is at a first position according to Embodiment 1 of the present invention; 
         FIG.  6    is a partial cross-sectional view of a push rod according to Embodiment 1 of the present invention; 
         FIG.  7    is a structural schematic view of a back plate of a compressor compartment according to Embodiment 2 of the present invention; 
         FIG.  8    is a structural schematic view of the baffle and a conductive device according to Embodiment 1 of the present invention; 
         FIG.  9    is a logic flow chart of a control method of a refrigerator according to Embodiment 3 of the present invention; 
         FIG.  10    is an emulation effect graph when an ordinary refrigerator of control group 1 is not embedded in the cupboard; 
         FIG.  11    is an emulation effect graph when an ordinary refrigerator of control group 2 is embedded in the cupboard; 
         FIG.  12    is an emulation effect graph when the refrigerator of an experimental group according to the present embodiment is embedded in the cupboard. 
     
    
    
     DETAILED DESCRIPTION 
     The present invention will be described in detail with reference to embodiments shown in the figures. 
     In the figures of the present invention, some dimensions of structures or portions might be enlarged relative to other structures or portions to facilitate illustration, and therefore are only intended to illustrate basic structures of the subject matter of the present invention. 
     It should be appreciated that although terms such as “first” and “second” may be used to describe various elements or structures in the text herein, these described objects should not be limited by these terms. These terms are only used to distinguish these described objects from one another. 
     Embodiment 1 
     Referring to  FIG.  1    and  FIG.  2   , a refrigerator  100  according to an embodiment of the present invention comprises a compressor compartment  1  disposed in its lower rear portion, a front wall  2  and a rear wall  3  arranged opposite to each other in a front-rear direction, a pair of side walls  4  arranged opposite to each other in a left-right direction, and a storage compartment. The storage compartment is enclosed by the front wall  2 , the rear wall  3  and the pair of side walls  4 . 
     Referring to  FIG.  2    and  FIG.  3   , the compressor compartment  1  comprises a built-in space  11 , a compartment wall  12  enclosing the built-in space  11 , and a heat dissipation fan  13 , a compressor  14  and an evaporator  15  disposed in the built-in space  11 . The compartment wall  12  comprises a back plate  121  disposed behind the built-in space  11 , and a bottom plate  122  disposed below the built-in space  11 . 
     Referring to  FIG.  4    and  FIG.  5   , the compartment wall  12  is provided with a first air port  123 , a second air port  124  and a third air port. Specifically, in the present embodiment, the back plate  121  of the compressor compartment  1  has the first air port  123  and the second air port  124  arranged side by side in the left-right direction, and the first air port  123  and the second air port  124  are respectively communicated with a rear space of the refrigerator  100 , i.e., communicated with the external to facilitate the compressor compartment  1  to perform air flow exchange with the ambient environment through a rear portion of the compressor compartment  1 . The bottom plate  122  of the compressor compartment  1  is provided with the third air port communicated with a lower space of the refrigerator  100 , i.e., the third air port is communicated with the external so that the compressor compartment  1  performs air flow exchange with the ambient environment through the bottom of the compressor compartment  1 . In other embodiments, the first air port  123  and the second air port  124  may also be disposed on the bottom plate  122 , and the third air port  124  is disposed on the back plate. 
     The first air port  123  may be an air inlet or an air outlet; when the first air port  123  is used as an air inlet, the second air port  124  serves as an air outlet, and the third air port also serves as an air inlet; when the first air port  123  is used as an air outlet, the second air port  124  serves as an air inlet, and the third air port also serves as an air outlet. 
     With the first air port  123 , the second air port  124  and the third air port being disposed on the compartment wall  12 , the built-in space  11  of the compressor compartment  1  has a first air passage and a second air passage. The first air passage communicates with the first air port  123  and the second air port  124  and passes through the heat dissipation fan  13 . And the second air passage communicates with the third air port and the second air port  124  and passes through the heat dissipation fan  13 . 
     For ease of description, in the present embodiment, a reference is taken in which the user faces the rear wall  3  of the refrigerator  100 . A direction from the rear wall  3  to the front wall  2  of the refrigerator  100  is taken as a back-to-front direction, that is, the front wall  2  of the refrigerator  100  is located in front of the rear wall  3 , and a direction from the second air port  124  to the first air port  123  is taken as a left-to-right direction, that is, the first air port  123  is located on the right side of the second air port  124 . Then, one side wall  4  on a side close to the first air port  123  is defined as a right side wall, and the other side wall  4  on a side away from the first air port  123  is defined as a left side wall. In other embodiments, the first air port  123  may also be located on the left side of the second air port  124 . 
     Referring to  FIG.  4    to  FIG.  5    and  FIG.  7    to  FIG.  8   , the refrigerator  100  further comprises a shielding member for opening or closing the first air outlet  123 . When the first air port  123  is opened, both the first air passage and the second air passage form a circulation loop with the external; when the first air port  123  is closed by the shielding member, the second air passage forms a circulation loop with the external. 
     In the present embodiment, the shielding member employs a baffle  16 , which is movably disposed at the first air port  123 . The baffle  16  has a first position for opening the first air port  123  and a second position for closing the first air port  123 . With the baffle  16  being provided, the baffle  16  may close the first air port  123  on the back plate  121  of the compressor compartment  1  when the refrigerator  100  is embedded in the cupboard  200 , so that the compressor compartment  1  employs the second air passage, i.e., air circulates from the third air port on the bottom plate  122  of the compressor compartment  1 , via the heat dissipation fan  13  to the second air port  124  on the back plate  121  of the compressor compartment  1 . The ingress air and egress air path for heat dissipation in the compressor compartment  1  is changed so that the hot air discharged out of the compressor compartment  1  does not blend with cold air sucked into the compressor compartment  1 , thereby achieving efficient heat dissipation of the compressor compartment  1  after the refrigerator  100  is embedded into the cupboard  200 , and avoiding the following problems: the blending of cold air and hot air because both the first air port  123  and second air port  124  are located on the back plate  121  of the compressor compartment  1 , a higher air temperature in the compressor compartment  1 , affect to the performance of the compressor  14  and condenser, and the energy consumption increasing of the refrigerator  100 . The above problems are caused when the first air passage which is from the first air port  123  on the back plate  121  of the compressor compartment  1 , via the heat dissipation fan  13  to the second air port  124  on the back plate  121  of the compressor compartment  1 . 
     The baffle  16  may be disposed on the inner side of the back plate  121 , or may be disposed on the outer side of the back plate  121  according to demands such as aesthetic appeal. 
     Referring to  FIG.  2    and  FIG.  5    to  FIG.  7   , furthermore, the refrigerator  100  further comprises a driving mechanism  17  which drives the baffle  16  to move between the first position and the second position, so that the baffle  16  opens or closes the first air port  123 . 
     Referring to  FIG.  5    and  FIG.  6   , further, the driving mechanism  17  is configured as a push rod  171 . The push rod  171  moves in a left-right direction relative to the baffle  16  to push the baffle  16  to move from the first position to the second position, i.e., push the baffle  16  to shield the first air port  123  so that the first air port  123  is in a closed state. The push rod  171  has a first end  1711  and a second end  1712  that are arranged opposite to each other in the left-right direction. The first end  1711  is connected to the baffle  16 ; when the baffle  16  is at the first position, the second end  1712  protrudes out of the side wall  4  of the refrigerator  100  in the left-right direction. 
     In the present embodiment, the first end  1711  is located at the left end of the push rod  171 , and the second end  1712  is located at the right end of the push rod  171 . When the baffle  16  is at the first position, the second end  1712  protrudes rightward out of the right side wall  4  of the refrigerator  100  in the left-right direction. In this way, when the refrigerator  100  is embedded in the cupboard  200 , the second end  1712  of the push rod  171  interferes with the wall of the cupboard  200 . Under the action of the wall of the cupboard  200 , the second end  1712  of the push rod  171  receives a force and moves in the left-right direction, and push the baffle  16  to move leftward in the left-right direction to shield the first air port  123 , so that the first air port  123  is in the closed state. 
     In other embodiments, when the first air port  123  is located on the left side of the second air port  124 , the first end  1711  is located at the right end of the push rod  171 , the second end  1712  is located at the left end of the push rod  171 , and the baffle  16  is located at the first position, the second end  1712  protrudes leftward out of the left side wall  4  of the refrigerator  100  in the left-right direction. When the refrigerator  100  is embedded in the cupboard  200 , the second end  1712  of the push rod  171  interferes with the wall of the cupboard  200 . Under the action of the wall of the cupboard  200 , the second end  1712  of the push rod  1712  receives a force and moves rightward in the left-right direction, and push the baffle  16  to move rightward to shield the first air port  123  so that the first air port  123  is in the closed state. 
     Referring to  FIG.  6   , further, the end face of the second end  1712  is set as an arcuate surface or an inclined surface gradually away from the side wall  4  from back to front. When the refrigerator  100  is embedded in the cupboard  200 , the rear end face of the second end  1712  first resists the wall of the cupboard  200 , and then transitions along the arcuate end face to the front end face to resist the wall of the cupboard  200 . Under the action of the wall of the cupboard  200 , the push rod  171  gradually moves from right to left. As such, the end face of the second end  1712  and the wall of the cupboard  200  move relative to each other in the front-rear direction, which not only saves effort, but also avoids the damage to the wall of the cupboard  200  by the second end  1712 . 
     Referring to  FIG.  5    and  FIG.  6   , furthermore, the driving mechanism  17  further comprises an elastic member  172  connecting the back plate  121  with the push rod  171 . The elastic member  172 , via the push rod  171 , drives the baffle  16  to return from the second position to the first position, and allows the push rod  171  to stably drive the baffle  16  to move in the left-right direction; when the baffle  16  is at the first position, the elastic member  172  has a first deformation amount; when the baffle  16  is at the second position, the elastic member  172  has a second deformation amount; the second deformation amount is greater than the first deformation amount, that is, when the driving mechanism  17  drives the baffle  16  to move from the first position to the second position, the driving mechanism  17  acts on the elastic member  172  to further elastically deform the elastic member  172 ; when the baffle  16  is at the second position and when the external force is removed, the elastic member  172  has an elastic restoration force driving the baffle  16  to return from the second position to the first position, to overcome the elastic deformation of the elastic member  172 . In the present embodiment, the elastic member  172  is provided on the right side of the first air port  123 . 
     Referring to  FIG.  5    and  FIG.  6   , to further drive the push rod  171  to move stably in the left-right direction and drive the baffle  16  to move stably in the left-right direction, the back plate  121  is provided with a guide rail  173  extending in the left-right direction. The elastic member  172  is a spring sleeved on an outer circumference of the push rod  171 . The push rod  171  and the spring are built into the guide rail  173 , the inner wall of the guide rail  173  is provided with a limiting portion  1731 , the push rod  171  is provided with a flange  1713 , an end of the spring adjacent to the first air port  123 , i.e., the left end resists the limiting portion  1731 , and the other end of the spring away from the first air port  123 , i.e., the right end, resists the flange  1713 . The push rod  171  compresses the spring and pushes the baffle  16  to move from the first position to the second position, and the end of the spring adjacent to the first air port  123  is relatively fixed to the back plate  121 . When the push rod  171  pushes the baffle  16  to move from the first position to the second position, the flange  1713  of the push rod  171  resists the right end of the spring and compresses and move the spring leftward to elastically deform the spring. In other embodiments, the elastic member  172  may also be in the form of a bellows, a rubber tube, etc., as long as it has elastic deformation. 
     Referring to  FIG.  4    to  FIG.  5    and  FIG.  7    to  FIG.  8   , further, a limiting member  1211  is provided on the back plate  121 . Specifically, in the present embodiment, the limiting member  1211  is a limiting post. When the baffle  16  is at the first position, the baffle  16  opens the first air port  123 , and there is a gap between the baffle  16  and the limiting member  1211 ; when the baffle  16  is at the second position, the limiting member  1211  resists the baffle  16  and restricts the baffle  16  from moving away from the first position from the second position. The setting of the limiting member  1211  defines a limit position of leftward movement of the baffle  16 , and prevents the baffle  16  from moving to stagger with the first air port  123  to fail to completely shield the first air port  123  so that the hot air discharged out of the compressor compartment  1  blends with cold air and enters the compressor compartment  1  again, thereby causing problems such as the increase of the energy consumption of the refrigerator  100  and reduction of the performance of the condenser and the compressor  14 . 
     Furthermore, the refrigerator  100  further comprises a control system comprising a collection unit and a fan control unit. The collection unit is configured to collect a power-on signal of the refrigerator  100  and a closing signal and an opening signal of the first air port  123 . The fan control unit is connected to the collection unit, and configured to control the heat dissipation fan  13  to operate at a preset rotation speed Nf1 when the collection unit collects the opening signal of the first air port  123 ; control the heat dissipation fan  13  to operate at a preset rotation speed Nf2 when the collection unit collects the closing signal of the first air port  123  and the power-on signal of the refrigerator  100 ; where Nf2&gt;Nf1. 
     Preferably, Nf2 is 110%-120% times Nf1, and neither Nf1 nor Nf2 exceeds a rated rotation speed of the heat dissipation fan  13 . 
     In this way, when the first air port  123  is closed and the refrigerator  100  is powered on, i.e., when the refrigerator  100  is embedded in the cupboard  200  and powered on, it is possible to, by collecting relevant signals and controlling the rotation speed of the heat dissipation fan  13  to increase, improve a discharge amount and discharge efficiency of hot air as well as the intake amount and air intake efficiency of the cold air, solve the problem of poor heat dissipation caused by the reduction of the number of air ports for air exchange between the compressor compartment  1  and the external, and achieve the automatic control and intelligence of the refrigerator  100 . 
     Furthermore, the collection unit is further configured to collect temperature of the storage compartment; the fan control unit is further configured to: when the collection unit collects the closing signal of the first air port  123  and the power-on signal of the refrigerator  100 , control the heat dissipation fan  13  to operate at the preset rotation speed Nf2, and control the heat dissipation fan  13  to operate at the preset rotation speed Nf1 only when the temperature of the storage compartment reaches a preset temperature T. 
     Referring to  FIG.  8   , furthermore, the refrigerator  100  further comprises a first conductive end  18  provided on the shielding member and a second conductive end  19  provided on the compartment wall  12 . Specifically, in the present embodiment, the first conductive end  18  is provided on the baffle  16 , and the second conductive end  19  is provided on the limiting member  1211 . When the baffle  16  is at the first position, i.e., when the shielding member opens the first air port  123 , the first conductive end  18  is separated from the second conductive end  19 , and the collecting unit collects the opening signal of the first air port  123 . When the baffle  16  is at the second position, i.e., when the shielding member closes the first air port  123 , the first conductive end  18  and the second conductive end  19  contact each other and generate an electrical signal, and the collection unit collects the closing signal of the first air port  123 . 
     In order to make the first conductive end  18  contacts the second conductive end  19  on the limiting post when the baffle  16  is at the second position, the left end of the first conductive end  18  is located at a position of a left edge of the baffle  16  corresponding to the limiting post. The shape of the first conductive end  18  is not limited, as long as the first conductive end  18  does not affect the shielding of the first air port  123  by the baffle  16 . 
     Furthermore, the control unit is further configured to control the compressor  14  to operate at a preset rotation speed Nc1 when the collecting unit collects the opening signal of the first air port  123 , and control the compressor  14  to operate at a preset rotation speed Nc2 when the collecting unit collects the closing signal of the first air port  123  and the power-on signal of the refrigerator  100 ; where Nc2&gt;Nc1. As such, when the first air outlet  123  is closed and the refrigerator  100  is powered on, i.e., when the refrigerator  100  is inserted into the cupboard  200  and turned on, rapid cooling may be achieved so that the refrigerator  100  can quickly reach the preset temperature T. 
     Preferably, Nc2 is 102% to 110% times Nc1, and none of Nc1 and Nc2 exceeds the rated rotation speed of the compressor  14 . 
     Referring to  FIG.  2   , furthermore, the back plate  121  is provided with two flanges  1212  opposite to each other up and down. The two flanges  1212  extend in the left-right direction. Upper and lower ends of the baffle  16  are respectively inserted into the grooves of the flanges  1212  to limit the trajectory of the transverse movement of the baffle  16 , and the baffle  16  may slide relative to the flanges  1212  in the left-right direction to reciprocate between the first position and the second position. The flanges  1212  are disposed at positions matching the baffle  16 . When the baffle  16  is disposed on the inner side of the back plate  121 , the flanges  1212  are also correspondingly disposed on the inner side of the back plate  121 ; when the baffle  16  is disposed on the outer side of the back plate  121 , the flanges  1212  are also correspondingly disposed on the outer side of the back plate  121 . 
     Referring to  FIG.  4    and  FIG.  5   , the baffle  16  comprises openings  161  and ribs  162  that are arranged at an interval. When the baffle  16  is at the first position, the openings  161  are aligned with the first air port  123  to open the first air port  123 ; when the baffle  16  is at the second position, the ribs  162  shield the first air port  123  to close the first air port  123 . A width of the gap between the baffle  16  and the limiting member  1211  is the same as the width of the openings  161 , so that when the baffle  16  moves to resist the limiting member  1211 , the ribs  162  right shield the first air port  123 . 
     Embodiment 2 
     The difference between Embodiment 2 and Embodiment 1 is as follows: 
     The driving mechanism  17  is an electric drive mechanism. The control system further comprises a drive control unit connected to the electric drive mechanism. Under the control of the drive control unit, the electric drive mechanism is activated to drive the shielding member to close the first air port  123 . 
     Referring to  FIG.  7   , the electric drive mechanism comprises an electromagnet  174  and a magnetically conductive block  175 . One of the electromagnet  174  and the magnetically conductive block  175  is disposed on the back plate  121 , and the other of the electromagnet  174  and the magnetically conductive block  175  is disposed on the baffle  16 . The electromagnet  174 , after being energized, fits with the magnetically conductive block  175  to drive the baffle  16  to move from the first position to the second position. Specifically, in the present embodiment, the electromagnet  174  is disposed on the back plate  121  and the magnetically conductive block  175  is disposed on the baffle  16 . 
     Furthermore, the refrigerator  100  further comprises an elastic return member  176  which drives the baffle  16  to move to return from the second position to the first position to open the first air port  123 . 
     Furthermore, the refrigerator  100  further comprises a sensor that detects position information of the refrigerator  100  and an obstacle. The drive control unit is connected to the sensor, and the drive control unit is configured to control the electric drive mechanism to be energized and activated according to the position information so that the electric drive mechanism drives the baffle  16  to move from the first position to the second position. 
     Specifically, in the present embodiment, the sensor is a distance sensor provided on the side wall  4 , the distance sensor is configured to detect the distance information between the refrigerator  100  and the obstacle, and the collection unit is connected to the distance sensor and collects the distance information between the refrigerator  100  and the obstacle. When the distance between the refrigerator  100  and the obstacle is shorter than a preset distance D, the drive control unit controls the electromagnet  174  to be energized to conduct magnetism to drive the baffle  16  to move from the first position to the second position. 
     Except for the above-mentioned differences, other structures of Embodiment 2 and Embodiment 1 are the same, and will not be described in detail any more here. 
     Embodiment 3 
     Referring to  FIG.  9   , the present invention further provides a method for controlling the refrigerator  100 , the method comprising the following steps: 
     collecting the power-on signal of the refrigerator  100  and the closing signal of the first air port  123 ; 
     when the opening signal of the first air port  123  is collected, and both the first air passage and the second air passage form a circulation loop with the external, controlling the heat dissipation fan  13  in the compressor compartment  1  to operate at the preset rotation speed Nf1; 
     when the power-on signal of the refrigerator  100  is collected, the closing signal of the first air port  123  is collected, and the second air passage forms a circulation loop with the external, controlling the heat dissipation fan  13  to operate at the preset rotation speed Nf2; 
     where Nf2&gt;Nf1. 
     As such, when the refrigerator  100  is powered on and the first air port  123  is closed, i.e., when the refrigerator  100  is embedded in the cupboard  200  and powered on, it is possible to, by increasing the rotation speed of the heat dissipation fan  13 , improve a discharge amount and discharge efficiency of hot air as well as the intake amount and air intake efficiency of the cold air, solve the problem of poor heat dissipation caused by the reduction of the number of air ports for air exchange between the compressor compartment  1  and the external, and achieve the automatic control and intelligence of the refrigerator  100 . 
     Furthermore, the method of controlling the refrigerator  100  further comprises the following steps: 
     When the power-on signal of the refrigerator  100  is collected, the closing signal of the first air port  123  is collected and the second air passage forms a circulation loop with the external, controlling the heat dissipation fan  13  to operate at the preset rotation speed Nf2, and controlling the heat dissipation fan  13  to operate at the preset rotation speed Nf1 only when the temperature of the storage compartment of the refrigerator  100  reaches the preset temperature T. 
     When the temperature of the storage compartment reaches the preset temperature of the refrigerator  100 , the heat dissipation fan  13  operates at a normal rotation speed to achieve normal heat dissipation of the compressor compartment  1 . 
     In order to illustrate the effect of the refrigerator  100  in addressing the problem of blending of hot air and cold air in the compressor compartment, simulation is performed as follows for the heat dissipation of the compressor compartment of the refrigerator, with the ambient temperature being 32° C. 
     Control group 1: simulation is performed for an ordinary refrigerator when it is not embedded in the cupboard: the distance between the left side wall of the refrigerator and the obstacle is set to 100 mm, and the distance between the right side wall of the refrigerator and the obstacle is also set to 100 mm, wherein the first air port and the second air port are provided on the back plate of the compressor compartment, the third air port is provided on the bottom plate of the compressor compartment, and the first air port, the second air port and the third air port are all in the open state. Reference may be made to  FIG.  10    for the simulation effect graph; 
     Control group 2: simulation is performed when an ordinary refrigerator is embedded in the cupboard: the distance between the left side wall of the refrigerator and the obstacle is set to 3 mm, and the distance between the right side wall of the refrigerator and the obstacle is also set to 3 mm, wherein the first air port and the second air port are provided on the back plate of the compressor compartment, the third air port is provided on the bottom plate of the compressor compartment, and the first air port, the second air port and the third air port are all in the open state. Reference may be made to  FIG.  11    for the simulation effect graph; 
     Experimental group: simulation is performed when the refrigerator of the present embodiment is embedded in the cupboard: the distance between the left side wall of the refrigerator and the obstacle is set to 3 mm, and the distance between the right side wall of the refrigerator and the obstacle is also set to 3 mm, wherein the first air port and the second air port are provided on the back plate of the compressor compartment, the third air port is provided on the bottom plate of the compressor compartment, and the first air port is in the closed state, and the second air port and the third air port are both in the open state. Reference may be made to  FIG.  12    for the simulation effect graph. 
     Simulation and analysis results of the effective air amounts, average temperatures of ingress air and average temperatures of the condensers of the three sets of refrigerators listed in the following table are obtained by performing simulation and analysis for the above three sets of refrigerators: 
     
       
         
           
               
               
               
               
               
             
               
                   
                   
               
               
                   
                   
                 Control 
                 Control 
                 Experimental 
               
               
                   
                 Index 
                 group 1 
                 group 2 
                 group 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 Effective air amount 
                 1513 
                 1120 
                 1379 
               
               
                   
                 (L/min) 
               
               
                   
                 Average temperature 
                 32.5 
                 36.9 
                 32.7 
               
               
                   
                 of ingress air (° C.) 
               
               
                   
                 Average temperature 
                 41.9 
                 45.7 
                 42.1 
               
               
                   
                 of the condenser (° C.) 
               
               
                   
                   
               
            
           
         
       
     
     Referring to  FIG.  10    through  FIG.  12   , as known from the above simulation and analysis data, when the ordinary refrigerator is embedded into the cupboard, since the hot air discharged out of the air port on the back plate of the compressor compartment blends with cold air and re-enters the compressor compartment, the average temperature of the ingress air in the compressor compartment rises, the effective air amount reduces, and the temperature of the condenser increases significantly; as compared with the ordinary refrigerator, when the refrigerator of the present embodiment is embedded in the cupboard, it is possible to, by shielding the first air port, effectively prevent the hot air discharged out of the compressor compartment from blending with cold air and re-entering the compressor compartment, increase the amount of effective air entering the compressor compartment, reduces the average temperature of the ingress air in the compressor compartment and the average temperature of the condenser, and achieves an effect approximate to a normal refrigerator when not embedded in the cupboard. 
     In other words, in the refrigerator  100  of the present embodiment, the ingress air and egress air path for heat dissipation in the compressor compartment  1  is changed so that the hot air discharged out of the compressor compartment  1  does not blend with cold air sucked into the compressor compartment  1 , thereby avoiding the following problems: the blending of cold air and hot air caused by the first air port  123  and the second air port  124  located on the back plate  121  of the compressor compartment  1 , the high temperature of the ingress air in the compressor compartment  1 , reduction of the performance of the compressor  14  and the condenser, and the increase of the energy consumption of the refrigerator  100 . 
     As compared with the prior art, the refrigerator  100 , the controlling system of the refrigerator  100  and the controlling method of the refrigerator  100  according to the present invention have the following advantageous effects: in the refrigerator  100  according to the present invention, the ingress air and egress air path for heat dissipation in the compressor compartment  1  is changed so that the hot air discharged out of the compressor compartment  1  does not blend with cold air sucked into the compressor compartment  1 , thereby achieving the efficient heat dissipation of the compressor compartment  1  after the refrigerator  100  is embedded in the cupboard  200 ; the drive mechanism  17  is provided to drive the baffle  16  to open or close the first air port  123 ; the second end  1712  of the push rod  171  protrudes out of the side wall  4  of the refrigerator  100  in the left-right direction, so that the baffle  16  can automatically close the first air port  123  by virtue of the action of the cupboard  200  when the refrigerator  100  is embedded in the cupboard  200 ; the return and stability of the push rod  171  is achieved by the spring; the guidance and stabilization of the push rod  171  is achieved through the guide rail  173 ; the baffle  16  may be automatically controlled to close the first air port  123  through the cooperation of the electromagnet  174  and the magnetically conductive block  175 ; the return of the magnetically conductive block  175  may be achieved through the return spring  176 ; with the first conductive end  18  and second conductive end  19  being disposed on the baffle  16  and back plate  121 , when the baffle  16  moves to close the first air port  123 , an electrical signal is generated; the cooperation of the baffle  16  and the first air port  123  may be achieved by providing the limiting member  1211  on the back plate  121 , so that the baffle  16  exactly shields the first air port  123 ; it is possible to, by providing the control system to collect relevant signals of the refrigerator  100  and control the rotation speed of the heat dissipation fan  13  to increase, improve a discharge amount and discharge efficiency of hot air as well as the intake amount and air intake efficiency of the cold air, solve the problem of poor heat dissipation caused by the reduction of the number of air ports for air exchange between the compressor compartment  1  and the external, and achieve the automatic control and intelligence of the refrigerator  100 ; the intelligentization of the refrigerator  100  is achieved by providing the sensor to detect the position information of the refrigerator  100  and the obstacle to judge whether the refrigerator  100  is embedded in the cupboard  200 ; in addition, according to the controlling method of the refrigerator  100 , the intelligentization degree of the refrigerator  100  is substantially improved by collecting the power-on signal of the refrigerator  100  and the opening signal and closing signal of the first air port  123  to control the rotation speed of the heat dissipation fan  13  to change. The simulation tests further prove that the refrigerator according to embodiments, when embedded in the cupboard, may effectively prevent the hot air discharged out of the compressor compartment from blending with cold air and re-entering the compressor compartment, increase the amount of effective air entering the compressor compartment, and reduces the average temperature of the ingress air in the compressor compartment and the average temperature of the condenser. 
     It should be understood that although the description is described according to the embodiments, not every embodiment only comprises one independent technical solution, that such a description manner is only for the sake of clarity, that those skilled in the art should take the description as an integral part, and that the technical solutions in the embodiments may be suitably combined to form other embodiments understandable by those skilled in the art. 
     The detailed descriptions set forth above are merely specific illustrations of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications that do not depart from the art spirit of the present invention should fall within the scope of protection of the present invention.