Patent Publication Number: US-11395374-B2

Title: Infrared heating mechanism and device

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present disclosure claims priority to the Chinese patent application No. 2018210767545, which is filed with the Chinese Patent Office on Jul. 6, 2018 and entitled “Infrared Heating Mechanism and Device”, and priority to the Chinese patent application No. 2018213038547, filed with the Chinese Patent Office on Aug. 14, 2018 and entitled “Infrared Heating Mechanism and Device”, which are incorporated herein by reference in their entirety. 
     TECHNICAL FIELD 
     The present disclosure relates to the technical field of infrared heating devices, and particularly to an infrared heating mechanism and device. 
     BACKGROUND ART 
     Electric warmers are a kind of household appliance for warming in winter which converts electric energy into heat energy and has the characteristics such as convenient use, no pollution and no noise. At present, various types of electric warmers on the market are unique in shape and convenient to use, and have become fashionable electric appliances for household consumption. At present, the warmers on the market are mainly classified into liquid-filled warmers, fan warmers, radiant warmers, etc. 
     With regard to the radiant electric warmers, the heat energy emission thereof is characterized by emitting heat to the ambient in a radiating manner. The radiant electric warmer warms the human body in such a way, i.e., after being energized by electricity, quartz electric tubes radiate heat within the distance radiated by far infrared rays and radiate far infrared rays to the outside, and the far infrared rays are absorbed by the human body and converted into heat energy. The radiant electric warmers look compact, are easy to be moved and are suitable for heating in a small space, and generally have an electrical power within the range of 800 w-3000 w. 
     The existing infrared heaters are all composed of an infrared heating tube and a reflection cover, wherein the reflection cover is disposed on one side of the heating tube and the reflection cover is capable of reflecting the infrared light emitted from the heating tube towards the direction opposite to the reflection cover. The infrared heating tube radiates infrared rays towards the reflection cover, and energy accumulates on the side of the reflection cover. As a result, the temperature on this side is remarkably higher than the temperature on the side of the infrared heating tube, resulting in excessively high temperature in the vicinity of the infrared heating tube. This will lead to aging and damages to the connector and lead wire of the infrared heating tube. Moreover, due to accumulation of heat, the infrared heating tube will have a very high temperature. In the heating process, heat is spread in a single direction, which is unfavorable for temperature rise of the whole room and also brings forth burning sensation, causing discomfort to the human body. 
     SUMMARY 
     An infrared heating mechanism provided in an embodiment of the present disclosure comprises infrared heating tubes, a plurality of reflection plates being disposed at intervals in a length direction of the infrared heating tubes, and the plurality of reflection plates are each provided with mounting holes corresponding to the infrared heating tubes, so that the reflection plates are sleeved on side walls of the infrared heating tubes. 
     An infrared heating mechanism provided in an embodiment of the present disclosure comprises a socket assembly and an electric heating tube independent of each other, wherein an electric connector is provided on the electric heating tube, a first electrically conductive structure and a second electrically conductive structure are provided on the socket assembly and the electric connector, respectively, so that after the electric connector is inserted into the socket assembly, the first electrically conductive structure and the second electrically conductive structure come into contact with each other and the socket assembly and the electric heating tube are powered on. 
     An infrared heating device provided in an embodiment of the present disclosure comprises the infrared heating mechanism described above. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, brief description is made below on the drawings required to be used in the embodiments. It should be understood that the following drawings only illustrate some of the embodiments of the present disclosure and shall not be regarded as a limitation to the scope, and for a person of ordinary skills in the art, other related drawings may be obtained from these drawings without inventive effort. 
         FIG. 1  is a schematic view of a first kind of infrared heating mechanism according to an embodiment of the present disclosure; 
         FIG. 2  is a schematic view of a first kind of reflection plate of the first kind of infrared heating mechanism according to an embodiment of the present disclosure; 
         FIG. 3  is a partially enlarged view of position A in  FIG. 2 ; 
         FIG. 4  is a schematic view after two reflection plates are stacked according to an embodiment of the present disclosure; 
         FIG. 5  is a partial schematic view of a second kind of reflection plate of the first kind of infrared heating mechanism according to an embodiment of the present disclosure; 
         FIG. 6  is a partial schematic view of a third kind of reflection plate of the first kind of infrared heating mechanism according to an embodiment of the present disclosure; 
         FIG. 7  is a schematic view of a second kind of infrared heating mechanism according to an embodiment of the present disclosure, from one view angle; 
         FIG. 8  is a schematic view of the second kind of infrared heating mechanism according to an embodiment of the present disclosure, from another view angle; 
         FIG. 9  is a sectional view in the direction of A-A in  FIG. 8 ; 
         FIG. 10  is a partially enlarged view of position B in  FIG. 9 ; 
         FIG. 11  is a schematic view of an infrared heating device according to an embodiment of the present disclosure; and 
         FIG. 12  is a partially enlarged view of position C in  FIG. 11 . 
     
    
    
     Reference signs:  100 —infrared heating tube;  110 —electric connector;  111 —second electrically conductive structure;  200 —reflection plate;  201 —mounting hole;  202 —connection portion;  210 —insertion slot;  220 —insertion plate;  230 —stop wing;  240 —reflection bump;  250 —reflection groove;  300 —second socket;  310 —first electrically conductive structure;  320 —insulating base;  330 —spring;  340 —jacket;  341 —stop structure;  350 —electrically conductive core;  400 —baffle;  401 —engagement hole;  410 —notch;  500 —first socket;  600 —heat dissipation fan;  700 —outer frame;  800 —wire; and  900 —shell. 
     DETAILED DESCRIPTION OF EMBODIMENTS 
     In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Apparently, the embodiments described are some of the embodiments of the present disclosure, rather than all of the embodiments. The components of the embodiments of the present disclosure described and illustrated in the drawings herein can generally be arranged and designed in a variety of different configurations. 
     Thus, the following detailed descriptions of the embodiments of the present disclosure provided in the drawings are not intended to limit the scope of protection of the present disclosure, but is merely representative of the selected embodiments of the present disclosure. All the other embodiments that are obtained by a person of ordinary skills in the art without inventive effort on the basis of the embodiments of the present disclosure shall be covered by the scope of protection of the present disclosure. 
     It should be noted that like reference signs and letters denote like items in the drawings, and therefore, once a certain item is defined in one figure, it does not need to be further defined and explained in the following figures. 
     In the description of the present disclosure, it is to be noted that the orientation or position relation denoted by the terms such as “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner” and “outer” is based on the orientation or position relation indicated by the figures, or refers to the orientation or position where the product of the present disclosure is normally placed when in use, which only serves to facilitate describing the present disclosure and simplify the description, rather than indicating or suggesting that the device or element referred to must have a particular orientation, and is constructed and operated in a particular orientation, and therefore cannot be construed as a limitation on the present disclosure. 
     In addition, the terms such as “first”, “second” and “third” are only used for differentiated description and cannot be construed as an indication or implication of relative importance. 
     In addition, the terms such as “horizontal”, “vertical” and “pendulous” do not necessarily require that the components must be absolutely horizontal or pendulous, rather, they can be slightly inclined. For example, the term “horizontal” merely refers to a more horizontal direction relative to the direction indicated by the term “vertical”, and does not necessarily require that the structure must be absolutely horizontal, rather, it can be slightly inclined. 
     In the description of the present disclosure, it should be further noted that unless otherwise explicitly specified and defined, the terms “arrange”, “install”, “link” and “connect” shall be understood in broad sense, which may, for example, refer to fixed connection, detachable connection or integral connection; may refer to mechanical connection or electrical connection; may refer to direct connection or indirect connection by means of an intermediate medium; and may refer to communication between two elements. A person of ordinary skills in the art could understand the specific meaning of the terms in the present disclosure according to specific situations. 
     It is to be noted that the features of the embodiments of the present disclosure can be combined with each other if there is no conflict. 
     Referring to  FIG. 1  and  FIG. 2 , an infrared heating mechanism provided in an embodiment of the present disclosure comprises infrared heating tubes  100 , a plurality of reflection plates  200  being disposed at intervals in a length direction of the infrared heating tubes  100 , and mounting holes  201  corresponding to the infrared heating tubes  100 , with the mounting holes provided on the reflection plates  200  so that the reflection plates  200  are sleeved on side walls of the infrared heating tubes  100 . When energized by electricity, the infrared heating tubes  100  will emit infrared light to the outside, and the infrared light is radiated on the reflection plates  200 . Multiple times of reflections of the infrared light may take place between any two adjacent reflection plates  200  among the plurality of reflection plates  200  that are disposed at intervals, and then the infrared light is diffused to the ambient. After the multiple times of reflections by the reflection plates  200 , it is possible to uniformly transmit the energy emitted from the infrared heating tubes  100  to the outside, which avoids the accumulation of heat around the infrared heating tubes  100 , thereby reducing the temperature around the infrared heating tubes  100  and increasing the service life of the infrared heating tubes  100 . Moreover, the radiation of the infrared heating mechanism is no longer unidirectional, instead the radiation is omnidirectional, which is favorable for the overall temperature rise of a house and avoids bringing forth the burning sensation due to longtime local radiation. 
     The plane where the reflection plates  200  lie is perpendicular to the length direction of each of the infrared heating tubes  100 , and the plurality of reflection plates  200  are uniformly arranged. The reflection plates  200  that are disposed at intervals reflect the infrared radiation uniformly to the ambient. Moreover, a corresponding connection structure is provided on an edge of each of the reflection plates  200 . 
     For example, referring to  FIG. 2  and  FIG. 4  in combination, connection portions  202  are provided on the edges of the two opposite ends of the reflection plate  200 , with the connection portions bent towards the back surface of the reflection plate  200 . The connection portions  202  are perpendicular to a reflection surface of the reflection plate  200 , an insertion slot  210  is provided at the transition between each of the connection portion  202  and the reflection surface of each of the reflection plates  200 , the insertion slots  210  are located on the connection portions  202  respectively, and an outer end of each of the connection portions  202  is provided with an insertion plate  220  corresponding to the respective insertion slot  210 . When a plurality of reflection plates  200  are stacked, the insertion plates  220  on an upper reflection plate  200  can be inserted into the insertion slots  210  of a lower reflection plate  200 . Stacking of the plurality of reflection plates  200  can be completed by means of insertion. As shown in  FIG. 4 ,  FIG. 4  shows a state in which two reflection plates  200  are stacked, and after the plurality of reflection plates  200  are sequentially stacked, the plurality of reflection plates  200  being stacked on top of one another as shown in  FIG. 1  can be formed. 
     Referring to  FIG. 2  and  FIG. 4  in combination, on a single reflection plate  200 , each connection portion  202  is provided with a stop wing  230  protruding relative to the respective connection portion  202 , wherein the stop wings  230  are perpendicular to the connection portions  202  respectively, there are two stop wings  230  on each one connection portion  202 , and the stop wings  230  are positioned between the insertion plates  220  and the insertion slots  210  respectively. When the insertion plate  220  is inserted into the respective insertion slot  210 , the stop wings  230  can be pressed against the front surface of the lower reflection plate  200 , thereby increasing the contact area between two adjacent reflection plates  200 , and further improving the stacking stability of the reflection plates  200 . 
     Specifically, referring to  FIG. 3 , the plate surface of the reflection plate  200  is provided thereon with reflection protrusions  240  which are configured to increase the reflection area of the reflection plate  200 . The infrared light emitted by the infrared heating tubes  100  is irradiated on the reflection protrusions  240  on the reflection plate  200 . On the one hand, the reflection protrusions  240  increase the reflection area of the reflection plate  200 , enabling more infrared light to be received, and on the other hand, the reflection protrusions  240  can change the emission direction of the infrared rays and reflect the infrared light from between two adjacent reflection plates  200  to the outside so as to avoid the accumulation of the infrared light between the reflection plates  200 . 
     Optionally, each of the reflection protrusions  240  is a semicircular protrusion, wherein the arc surface of the semicircular protrusion has a relatively large area for light receiving, which effectively improves the efficiency of light diffusion. When the infrared light is irradiated on the semicircular protrusion, a relatively large reflection angle can be formed, which enables the infrared light to emit farther. Evidently, the surface of each of the reflection protrusions  240  may also be a cylindrical surface, a tapered surface, an elliptical surface or a surface of other shapes. 
     Optionally, the infrared heating mechanism further comprises a heat dissipation fan  600  (shown in  FIG. 11 ), and an air outlet of the heat dissipation fan  600  faces the infrared heating tubes  100 . The infrared heating tubes  100  transmit energy to the outside in a light irradiation manner by emitting infrared light, and the heat dissipation fan  600  disposed on the side can exchange the cold air outside the infrared heating mechanism with the hot air inside the infrared heating mechanism, thereby heating the room more effectively. 
     Referring to  FIG. 5 , the plate surface of a second kind of each of the reflection plates  200  provided in this embodiment is provided thereon with reflection grooves  250  which are configured to increase the reflection area of the reflection plate  200 . The infrared light emitted by the infrared heating tubes  100  is irradiated on the reflection grooves  250  on the reflection plate  200 . On the one hand, the reflection grooves  250  increase the reflection area of the reflection plate  200 , enabling more infrared light to be received, and on the other hand, the reflection grooves  250  can change the emission direction of the infrared light and reflect the infrared light from between two adjacent reflection plates  200  so as to prevent the accumulation of the infrared light between the reflection plates  200 . 
     Optionally, each of the reflection grooves  250  is a semicircular groove and the arc surface of the semicircular groove has a relatively large area for light receiving, which effectively improves the efficiency of light diffusion. When the infrared light is irradiated on the semicircular grooves, a relatively large reflection angle can be generated, which enables the infrared light to emit farther. Evidently, the depressed surface of each of the reflection grooves  250  may also be a cylindrical surface, a tapered surface, an elliptical surface, an elliptical surface or a surface of other shapes. 
     Referring to  FIG. 6 , in view of the above, on a third kind of reflection plate  200  provided in this embodiment, the reflection protrusions  240  and the reflection grooves  250  can be uniformly distributed in a matrix shape, and the structure of concave-convex matrix is intended to increase the reflection area. Moreover, the infrared rays irradiated on the energy concentrating reflection plate  200  and the surface of the concave-convex matrix can be refracted in all directions, which has the advantage of bringing about a better equilibrium of the heat. 
     In  FIG. 6 , both the front surface and the back surface of the reflection plate  200  are provided thereon with the reflection protrusions  240  and the reflection grooves  250 . In this way, both the upper surface and lower surface of a light exit channel formed between two adjacent reflection plates  200  have a concavo-convex matrix structure, so that the infrared light is radiated to the ambient after being reflected multiple times. 
     In order to facilitate the processing of the reflection plate  200 , the reflection grooves  250  on the front surface of the reflection plate  200  are recessed towards the back surface of the reflection plate  200  from the front surface of the reflection plate  200  to form the reflection protrusions  240  on the back surface of the reflection plate  200 ; and the reflection grooves  250  on the back surface of the reflection plate  200  are recessed towards the front surface of the reflection plate  200  from the back surface of the reflection plate  200  to form the reflection protrusions  240  on the front surface of the reflection plate  200 . The corresponding protrusions and grooves on the front and back surfaces can be processed in a matched manner by means of die casting, which can reduce the mass of the reflection plate  200 . 
     In summary, the first kind of infrared heating mechanism provided in an embodiment of the present disclosure comprises infrared heating tubes  100 , a plurality of reflection plates  200  being disposed at intervals in a length direction of the infrared heating tubes  100 , and mounting holes  201  corresponding to the infrared heating tubes  100  being provided on the reflection plates  200  so that the reflection plates  200  are sleeved on side walls of the infrared heating tubes  100 . A plurality of concave-convex matrixes are arranged on each of the reflection plates  200 , the concave-convex matrixes serve to increase the reflection area, and the infrared rays irradiated on the reflection plates  200  for energy concentration and on the surfaces of the concave-convex matrixes can be refracted in all directions, which has the advantage of bringing about a better equilibrium of the heat. When energized by electricity, the infrared heating tubes  100  will emit infrared light to the outside, and the infrared light is radiated on the reflection plates  200 . The infrared light will experience multiple times of reflections between any two adjacent reflection plates  200  among the plurality of reflection plates  200  that are disposed at intervals, and then the infrared light is diffused to the outside. After the multiple times of reflections by the reflection plates  200 , it is possible to uniformly transmit the energy emitted from the infrared heating tubes  100  to the outside, which avoids the accumulation of heat around the infrared heating tubes  100 , thereby reducing the temperature around the infrared heating tubes  100  and increasing the service life of the infrared heating tubes  100 . Moreover, the radiation of the infrared heating mechanism is no longer unidirectional, instead, the radiation is omnidirectional, which is favorable for the overall temperature rise of the house and avoids bringing forth the burning sensation due to longtime local radiation. By providing a heat dissipation fan  600 , it is possible to exchange the cold air outside the infrared heating mechanism with the hot air inside the infrared heating mechanism, thereby heating the room more effectively. The first kind of infrared heating mechanism provided by an embodiment of the present disclosure brings about the advantages of fast heating, rapid heat transfer, capability of effectively reducing heat loss, improving heat energy utilization rate and avoiding fire risk caused by local high temperature, and has no local burning sensation. 
     Referring to  FIG. 11 , an infrared heating device provided in an embodiment of the present disclosure comprises an outer frame  700  and the above-described infrared heating mechanism. When energized by electricity, the infrared heating tubes  100  will emit infrared light to the outside, and the infrared light is radiated on the reflection plates  200 . The infrared light will experience multiple times of reflections between any two adjacent reflection plates  200  among the plurality of reflection plates  200  that are disposed at intervals, and then the infrared light is diffused to the ambient. After the multiple times of reflections by the reflection plates  200 , it is possible to uniformly transmit the energy emitted from the infrared heating tubes  100  to the outside, which avoids the accumulation of heat around the infrared heating tubes  100 , thereby reducing the temperature around the infrared heating tubes  100  and increasing the service life of the infrared heating tubes  100 . Moreover, the radiation of the infrared heating mechanism is no longer unidirectional, instead, the radiation is omnidirectional, which is favorable for the overall temperature rise of the house and avoids bringing forth the burning sensation due to longtime local radiation. The infrared heating mechanism is positioned inside the outer frame  700 , and the outer frame  700  is configured to prevent a user from touching the infrared heating mechanism by accident. 
     Referring to  FIG. 7  to  FIG. 10 , the second kind of infrared heating mechanism provided in an embodiment of the present disclosure comprises socket assemblies and electric heating tubes independent of each other, wherein an electric connector  110  is provided on each of the electric heating tubes, a first electrically conductive structure  310  and a second electrically conductive structure  111  are provided on each of the socket assemblies and each of the electric connectors  110 , respectively, so that after the electric connector  110  is inserted into the respective socket assembly, the first electrically conductive structures  310  and the second electrically conductive structures  111  come into contact with each other and the socket assemblies and the electric heating tubes are powered on. 
     It is to be noted that in this embodiment, each of the electric heating tubes may be construed as the infrared heating tube  100 , this mechanism changes the conventional structure that the electric heating tubes are integrated with the electrically conductive structures, wherein the electric heating tubes and the socket assemblies are designed to be a split-type structure, and electrical connections therebetween are realized by means of plugging-in. When one of the electric heating tubes is in malfunction, the electric heating tube can be directly disassembled and replaced, which not only reduces the maintenance cost, but also improves the maintenance efficiency. 
     Each of the socket assemblies comprises a wire  800  connected with an external power source, and by means of the socket assemblies, it is possible to supply power to the electric heating tubes so that the electric heating tubes converts electric energy into heat energy. 
     Specifically, each of the electric heating tubes comprises two electric connectors  110  located at the two ends thereof, respectively, and the second electrically conductive structure  111  is located on each of the electric connectors  110 ; each of the socket assemblies comprises a first socket  500  and a second socket  300 , wherein the first socket  500  and the second socket  300  are connected at the two ends of each of the electric heating tube, respectively, by means of plugging-in. 
     The infrared heating mechanism further comprises shells  900 , wherein each of the first sockets  500  is fixed on the respective shell  900 , and each of the second sockets  300  is movably connected with the respective shell  900 . It is feasible to implement electrical connection of one of the electric heating tubes by removing the second socket  300  first, then inserting one end of the electric heating tube into the first socket  500 , and finally inserting the second socket  300  into the other end of the electric heating tube. 
     Each of the shells  900  comprises a baffle  400 , wherein a gap is formed between the baffle  400  and the electric connector  110  adjacent thereto. Each of the second sockets  300  comprises an electrically conductive core  350  and a jacket  340 , wherein the jacket  340  is slidably sleeved on the outer side of the electrically conductive core  350 . a limiting groove and a limiting protrusion are provided between the jacket  340  and the electrically conductive core  350 , wherein the limiting protrusion is located in the limiting groove, so that the limiting protrusion can slide in the length direction of the limiting groove, and the limiting protrusion is configured to prevent the jacket  340  from being separated from the electrically conductive core  350 . The outer wall of each of the jackets  340  is provided with a stop structure  341 , each of the baffles  400  is provided thereon with an engagement hole  401  corresponding to the respective jacket  340 , the engagement hole  401  is aligned with the respective electric connector  110  so that the stop structure  341  is rotationally engaged in the gap after passing through the engagement hole  401 . When in use, one end of each of the electric heating tubes is inserted into the respective first socket  500 , then the respective second socket  300  is inserted into the engagement hole  401 , after each of the stop structures  341  passes through the respective engagement hole  401 , each of the second sockets  300  is rotated to engage the respective stop structure  341  on the surface of each of the baffles  400  facing the respective electric connector  110 , thereby completing the fixing of the second sockets  300 . 
     The size of each of the engagement holes  401  needs to be larger than the size of the electric heating tubes, facilitating withdrawing of the electric heating tube from the engagement hole  401 . 
     With reference to  FIG. 10  and  FIG. 12  in combination, each of the stop structures  341  comprises two protrusions protruding outwards in the circumferential direction of the respective jacket  340 , with the two protrusions protruding outwards in opposite directions, and correspondingly, each of the engagement holes  401  comprises notches  410  corresponding to the two protrusions, wherein the protrusions are aligned with the notches  410  respectively, each of the second sockets  300  can be inserted into the respective engagement hole  401 , the second socket  300  are rotated to make the protrusions offset from the notches  410 , and each of the second sockets  300  is engaged between the respective baffle  400  and the respective electric heating tube. 
     Similarly, it is also feasible to arrange the first sockets  500  to have the same structure as the second sockets  300 , so that each of the first sockets  500  is also movably connected with the respective shell  900 . 
     Each of the electrically conductive cores  350  comprises an insulating base  320 , and each of the first electrically conductive structures  310  is fixed at the bottom of the respective insulating base  320  such that the first electrically conductive structure  310  comes into contact with the second electrically conductive structure  111  after the electric connector  110  is inserted into the insulating base  320 . The first electrically conductive structures  310  and the second electrically conductive structures  111  come into contact with each other in the respective insulating bases  320 , which reduces the probability of electric leakage and improves the safety performance. 
     The insulating bases  320  may be made of insulating ceramic. 
     A spring  330  is disposed between each of the electrically conductive cores  350  and each of the jackets  340 . Each of the spring  330  is a compression spring, when each of the second sockets  300  is inserted into the respective engagement hole  401 , the spring  330  is compressed, after the respective stop structure  341  passes through the engagement hole  401 , the second socket  300  is rotated to cause the stop structure  341  to abut against the bottom surface of the respective baffle  400 , and the spring  330  drives the respective electrically conductive core  350  to move towards the respective electric connector  110 , so that the first electrically conductive structures  310  come into better contact with the second electrically conductive structures  111 . 
     Referring to  FIG. 7 , in combination with  FIG. 2 , a plurality of reflection plates  200  are disposed at intervals in a length direction of the electric heating tubes, and mounting holes  201  corresponding to the electric heating tubes are provided on each of the reflection plates  200  so that the reflection plates  200  are sleeved on side walls of the electric heating tubes. When energized by electricity, the electric heating tubes will emit infrared light to the outside, and the infrared light is radiated on the reflection plates  200 . The infrared light will experience multiple times of reflections between any two adjacent reflection plates  200  among the plurality of reflection plates  200  that are disposed at intervals, and then the infrared light is diffused to the ambient. After the multiple times of reflections by the reflection plates  200 , it is possible to uniformly transmit the energy emitted from the electric heating tubes to the outside, which avoids the accumulation of heat around the electric heating tubes, thereby reducing the temperature around the electric heating tubes and increasing the service life of the electric heating tubes. Moreover, the radiation of the infrared heating mechanism is no longer unidirectional, but in all direction, which is favorable for the overall temperature rise of the house and avoids bringing forth the burning sensation due to longtime local radiation. 
     The plane where the reflection plates  200  lie is perpendicular to the length direction of the electric heating tubes and the plurality of reflection plates  200  are uniformly arranged. The reflection plates  200  that are disposed at intervals reflect the infrared radiation uniformly to the ambient. Moreover, a corresponding connection structure is provided on an edge of each of the reflection plates  200 . 
     Specifically, in combination with  FIG. 3 , the plate surface of the reflection plate  200  is provided thereon with reflection protrusions  240  which are configured to increase the reflection area of the reflection plate  200 . The infrared light emitted by the electric heating tubes is irradiated on the reflection protrusions  240  on the reflection plate  200 . On the one hand, the reflection protrusions  240  increase the reflection area of the reflection plate  200 , enabling more infrared light to be received, and on the other hand, the reflection protrusions  240  can change the emission direction of the infrared light and reflect the infrared light from between two adjacent reflection plates  200  so as to prevent the accumulation of the infrared light from between the reflection plates  200 . 
     Optionally, each of the reflection protrusions  240  is a semicircular protrusion and the arc surface of each of the semicircular protrusions has a relatively large area for light receiving, which effectively improves the efficiency of light diffusion. When the infrared light is irradiated on the semicircular protrusions, a relatively large reflection angle can be generated, which enables the infrared light to emit farther. Evidently, the surface of each of the reflection protrusions  240  may also be a cylindrical surface, a tapered surface, an elliptical surface or a surface of other shapes. 
     Optionally, the infrared heating mechanism further comprises a heat dissipation fan  600  (shown in  FIG. 11 ), and an air outlet of the heat dissipation fan  600  faces the electric heating tube. The electric heating tube transmits energy to the outside in a light irradiation manner by emitting infrared light, and the heat dissipation fan  600  disposed on the side can exchange the cold air outside the infrared heating mechanism with the hot air inside the infrared heating mechanism, thereby heating the room more effectively. 
     Referring to  FIG. 5 , the plate surface of the reflection plate  200  in  FIG. 5  is provided thereon with reflection grooves  250  which are configured to increase the reflection area of the reflection plate  200 . The infrared light emitted by the electric heating tube is irradiated on the reflection grooves  250  on the reflection plate  200 . On the one hand, the reflection grooves  250  increase the reflection area of the reflection plate  200 , enabling more infrared light to be received, and on the other hand, the reflection grooves  250  can change the emission direction of the infrared light and reflect the infrared light from between two adjacent reflection plates  200  so as to prevent the accumulation of the infrared light between the reflection plates  200 . 
     Optionally, each of the reflection grooves  250  is a semicircular groove and the arc surface of the semicircular groove has a relatively large area for light receiving, which effectively improves the efficiency of light diffusion. When the infrared light is irradiated on the semicircular grooves, a relatively large reflection angle can be generated, which enables the infrared light to emit farther. Evidently, the depressed surface of each of the reflection grooves  250  may also be a cylindrical surface, a tapered surface, an elliptical surface or a surface of other shapes. 
     Referring to  FIG. 6 , optionally, on the reflection plate  200 , the reflection protrusions  240  and the reflection grooves  250  can be uniformly distributed in a matrix shape, and the structure of concave-convex matrix is intended to increase the reflection area. Moreover, the infrared rays irradiated on the energy concentrating reflection plate  200  and the surface of the concave-convex matrix can be refracted in all directions, which has the advantage of bringing about a better equilibrium of the heat. 
     In  FIG. 6 , both the front surface and the back surface of the reflection plate  200  are provided thereon with the reflection protrusions  240  and the reflection grooves  250 . In this way, both the upper surface and the lower surface of a light exit channel formed between two adjacent reflection plates  200  have a concavo-convex matrix structure, so that the infrared light is radiated to the ambient after being reflected multiple times. 
     In order to facilitate the processing of the reflection plate  200 , the reflection grooves  250  on the front surface of the reflection plate  200  are recessed towards the back surface of the reflection plate  200  from the front surface of the reflection plate  200  to form the reflection protrusions  240  on the back surface of the reflection plate  200 ; and the reflection grooves  250  on the back surface of the reflection plate  200  are recessed towards the front surface of the reflection plate  200  from the back surface of the reflection plate  200  to form the reflection protrusions  240  on the front surface of the reflection plate  200 . The corresponding protrusions and grooves on the front and back surfaces can be processed in a matched manner by means of die casting, which can reduce the mass of the reflection plate  200 . 
     Referring to  FIG. 11 , an infrared heating device provided in an embodiment of the present disclosure comprises an outer frame  700  and the above-described infrared heating mechanism. The infrared heating mechanism is positioned inside the outer frame  700 , and the outer frame  700  is configured to prevent a user from accidentally touching the infrared heating mechanism. When energized by electricity, the electric heating tubes will emit infrared light to the outside, and the infrared light is radiated on the reflection plates  200 . The infrared light will experience multiple times of reflections between any two adjacent reflection plates  200  among the plurality of reflection plates  200  that are disposed at intervals, and then the infrared light is diffused to the ambient. After the multiple times of reflections by the reflection plates  200 , it is possible to uniformly transmit the energy emitted from the electric heating tubes to the outside, which avoids the accumulation of heat around the electric heating tubes, thereby reducing the temperature around the electric heating tubes and increasing the service life of the electric heating tubes. Moreover, the radiation of the infrared heating mechanism is no longer unidirectional, instead, the radiation is omnidirectional, which is favorable for the overall temperature rise of the house and avoids bringing forth the burning sensation due to longtime local radiation. The infrared heating mechanism is positioned inside the outer frame  700 , and the outer frame  700  is configured to prevent a user from accidentally touching the infrared heating mechanism. 
     In some embodiments: 
     Referring to  FIG. 1 , the infrared heating mechanism shown in  FIG. 1  comprises infrared heating tubes  100  and a plurality of reflection plates  200  disposed at intervals in a length direction of the infrared heating tubes  100 . The reflection plates  200  are connected with the infrared heating tubes  100 , and the infrared heating tubes  100  pass through the reflection plates  200 . In  FIG. 1 , three infrared heating tubes  100  are shown, which are distributed horizontally, a plurality of reflection plates  200  are shown, the plurality of reflection plates  200  are distributed vertically, and two adjacent reflection plates  200  form a light exit channel through which light emitted from the infrared heating tubes  100  is radiated to the ambient. 
     Referring to  FIG. 2 , the reflection plate  200  shown in  FIG. 2  is provided with mounting holes  201  corresponding to the infrared heating tubes  100 , so that the reflection plate  200  is sleeved on the side wall of the infrared heating tubes  100 , and correspondingly, the reflection plate  200  is provided thereon with three mounting holes  201  for mounting three infrared heating tubes  100 . Connection portions  202  are provided on the edges of the two opposite ends of the reflection plate  200 , with the connection portions bent towards the back surface of the reflection plate  200 . The connection portions  202  are perpendicular to a reflection surface of the reflection plate  200 , an insertion slot  210  is provided at the transition between each of the connection portions  202  and the reflection surface of each of the reflection plates  200 , the insertion slots  210  are located on the connections portion  202  respectively, and an outer end of each of the connection portions  202  are provided with an insertion plate  220  corresponding to the respective insertion slot  210 . When a plurality of reflection plates  200  are stacked, the insertion plates  220  on an upper reflection plate  200  can be inserted into the insertion slots  210  of a lower reflection plate  200 . Each connection portion  202  is provided with a stop wing  230  protruding relative to the respective connection portion  202 , the stop wings  230  are perpendicular to the connection portions  202  respectively, there are two stops wing  230  on each one connection portion  202 , and the stop wings  230  are positioned between the insertion plates  220  and the insertion slots  210  respectively. When the insertion plate  220  is inserted into the respective insertion slot  210 , the stop wings  230  can be pressed against the front surface of the lower reflection plate  200 . Specifically, the two ends of the reflection plate  200  are provided with two connection portions  202 , respectively, and there is a gap between the two connection portions  202  at the same end of the reflection plate  200 . 
     Referring to  FIG. 3 , the reflection plate  200  shown in  FIG. 3  is provided with reflection protrusions  240  configured to increase the reflection area of the reflection plate  200 . 
     Referring to  FIG. 4 ,  FIG. 4  shows two reflection plates  200 , each reflection plate  200  has a structure as shown in  FIG. 2 . The stacking of multiple reflection plates  200  is realized by the cooperation between the respective insertion slots  210  and the insertion plates  220  of two reflection plates  200  as well as by position limiting through the stop wings  230 . 
     Referring to  FIG. 5 , the reflection plate  200  shown in  FIG. 5  is provided thereon with reflection grooves  250  configured to increase the reflection area of the reflection plate  200 . 
     Referring to  FIG. 6 , the reflection plate  200  shown in  FIG. 6  is provided thereon with reflection protrusions  240  and reflection grooves  250  that are configured to increase the reflection area of the reflection plate  200 . Specifically, reflection protrusions  240  and reflection grooves  250  are distributed on both the front surface and the back surface of the reflection plate  200 . The reflection grooves  250  on the front surface of the reflection plate  200  are recessed towards the back surface of the reflection plate  200  from the front surface of the reflection plate  200  to form the reflection protrusions  240  on the back surface of the reflection plate  200 ; and the reflection grooves  250  on the back surface of the reflection plate  200  are recessed towards the front surface of the reflection plate  200  from the back surface of the reflection plate  200  to form the reflection protrusions  240  on the front surface of the reflection plate  200 . 
     Referring to  FIG. 7 , the infrared heating mechanism shown in  FIG. 7  comprises electric heating tubes and a plurality of reflection plates  200  disposed at intervals in a length direction of the electric heating tubes. The reflection plates  200  are connected with the electric heating tubes, and the electric heating tubes pass through the reflection plates  200 . In  FIG. 1 , three electric heating tubes are shown, which are distributed horizontally, a plurality of reflection plates  200  are shown, the plurality of reflection plates  200  are distributed vertically, and two adjacent reflection plates  200  form a light exit channel through which light emitted from the electric heating tubes is radiated to the ambient. The electric heating tubes are the infrared heating tubes  100  shown in  FIG. 7 . Moreover, the two ends of each of the infrared heating tubes  100  are adapted to be plugged in the first socket  500  and the second socket  300 , respectively, so as to be powered, and the wire  800  is connected to the first socket  500  and the second socket  300  and connected to an external power source, so as to be powered. 
     Referring to  FIG. 8 , in  FIG. 8 , there are three second sockets  300 , the three second sockets are in one-to-one correspondence to the three infrared heating tubes  100 . The infrared heating mechanism further comprises a shell  900 , the second sockets  300  are movably connected with the shell  900 , and correspondingly, the first socket  500  is fixedly connected with the shell  900 . The shell  900  may be one structure similar to an enclosure for enclosing and protecting the infrared heating tubes  100 , or may be two structures and both ends of each of the infrared heating tubes  100  are provided with the shell  900 . 
     Referring to  FIG. 9 , the structure in  FIG. 9  is the same as that in  FIG. 7 . 
     Referring to  FIG. 10 , an end of the infrared heating tube  100  is connected with the electric connector  110 , the second socket  300  is provided with the first electrically conductive structure  310 , and the electric connector  110  is provided with the second electrically conductive structure  111 . After the electric connector  110  is inserted into the second socket  300 , the first electrically conductive structure  310  and the second electrically conductive structure  111  come into contact with each other and the second socket  300  and the infrared heating tube  100  are powered on. The shell  900  comprises a baffle  400 , wherein a gap is formed between the baffle  400  and the electric connector  110  adjacent thereto. The second socket  300  comprises an electrically conductive core  350  and a jacket  340 , wherein the jacket  340  is slidably sleeved on the outer side of the electrically conductive core  350 . Between the jacket  340  and the electrically conductive core  350  are a limiting groove and a limiting protrusion, the limiting protrusion is located in the limiting groove, so that the limiting protrusion can slide in the length direction of the limiting groove, and the limiting protrusion is configured to prevent the jacket  340  from being separated from the electrically conductive core  350 . The outer wall of the jacket  340  is provided with a stop structure  341 , the baffle  400  is provided thereon with an engagement hole  401  corresponding to the jacket  340 , the engagement hole  401  is aligned with the electric connector  110  so that the stop structure  341  is rotationally engaged in the gap after passing through the engagement hole  401 . The stop structure  341  comprises two protrusions protruding outwards in the circumferential direction of the jacket  340 , with the two protrusions protruding in opposite directions. Referring to  FIG. 12 , the engagement hole  401  comprises notches  410  corresponding to the two protrusions, the two protrusions can extend into the engagement hole  401  along the two notches  410 , and then are rotated by a certain angle, then the jacket  340  can prevent slipping out of the components. The electrically conductive core  350  comprises an insulating base  320 , and the first electrically conductive structure  310  is fixed at the bottom of the insulating base  320  such that the first electrically conductive structure  310  comes into contact with the second electrically conductive structure  111  after the electric connector  110  is inserted into the insulating base  320 . A spring  330  is disposed between the electrically conductive core  350  and the jacket  340 . The spring  330  drives the electrically conductive core  350  to move towards the electric connector  110 , so that the first electrically conductive structure  310  comes into better contact with the second electrically conductive structure  111 . 
     Referring to  FIG. 11 , the infrared heating device shown in  FIG. 11  comprises an outer frame  700  and the above-described infrared heating mechanism. The infrared heating mechanism is positioned inside the outer frame  700 , and the outer frame  700  is configured to prevent a user from accidentally touching the infrared heating mechanism. Moreover, the heat dissipation fan  600  is also mounted on the outer frame  700  to blow air to the back of the infrared heating mechanism so that cold air enters the infrared heating mechanism from the back thereof, and hot air heated by the infrared heating tubes  100  is blown out from the front of the infrared heating mechanism. 
     Referring to  FIG. 12 , the protrusions on the jacket  340  shown in  FIG. 12  extend into the engagement hole  401  through the notches  410  of the engagement hole  401 . By rotating the jacket  340 , it is possible to fix the jacket  340  in the engagement hole  401 . 
     Finally, it should be noted that the above embodiments are only specific implementation modes of the present disclosure and are used to illustrate the technical solutions of the present disclosure, rather than limit the same, and the scope of protection of the present disclosure is not limited thereto; although the present disclosure has been described in detail with reference to the foregoing embodiments, it should be understood by a person of ordinary skills in the art that within the technical scope in the present discourse, a person skilled in the art could still modify the technical solutions described in the embodiments, readily conceive variations thereof, or make equivalent substitution to some of the technical features therein; and the modifications, variations or substitutions would not cause the substance of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present disclosure, thus shall all be covered by the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure shall be determined by the scope of protection of the appended claims. 
     INDUSTRIAL APPLICABILITY 
     In summary, the present disclosure provides an infrared heating mechanism and device, having a simple structure and capable of improving heat utilization rate while effectively improving the service life of the infrared heating tubes.