Cold and hot cabinet

Abstract

The invention relates to the technical field of refrigeration equipment, and discloses a cold and hot cabinet which comprises a shell, a first inner container and a second inner container which are arranged up and down are arranged in the shell, a first storage cavity is defined in the first inner container, and a second storage cavity is defined in the second inner container; the first air duct plate is arranged in the first inner container, and a first air duct is defined between the first air duct plate and a first back plate of the first inner container; the second air duct plate is arranged in the second inner container, and a second air duct is defined between the second air duct plate and a second back plate of the second inner container; the first evaporator is arranged in the first air duct and used for refrigerating air circulating between the first storage cavity and the first air duct during operation; the heating assembly is arranged in the first air duct and used for heating air circulating between the first storage cavity and the first air duct during operation; and the second evaporator is connected with the first evaporator in parallel, is arranged in the second air duct and is used for refrigerating air circulating between the second storage cavity and the second air duct. According to the cold and hot cabinet, energy consumption can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, for example, to a cold and hot cabinet. Background Art

[0002] The current single-compartment freezers or refrigerators can only play the role of freezing or refrigerating. In the hot summer, such freezers or refrigerators can indeed meet people's needs for frozen food or drinks. However, in other seasons, especially in winter, freezers with only a single function are often shelved and used again when the weather turns hot. The reason is that such cold and hot cabinets have a single function and cannot heat, which is particularly prominent for some fast food merchants and shopping malls and stores that sell all kinds of hot drinks and hot foods.

[0003] The refrigerator disclosed in the related art includes a main insulation board, an auxiliary insulation board and a heating module, wherein the auxiliary insulation board is rotatably connected to the front edge of the main insulation board, and the heating module is fixed to the main insulation board and located on the first surface of the main insulation board.

[0004] When simultaneous cooling and heating are required, the main insulation board and the auxiliary insulation board are flush, the heating module will heat the heating cavity, and the refrigeration cavity will maintain a refrigeration state using the refrigeration circuit; when heating is not required, the heating module can be turned off and the auxiliary insulation board can be folded to connect the refrigeration cavity and the heating cavity.

[0005] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0006] In the related art, when the heating module switches from heating mode to cooling mode, the items placed on the auxiliary insulation board need to be removed and rearranged to other locations, which increases the time the refrigerator door is opened, causing serious loss of cold / heat in the refrigerator and excessive energy consumption.

[0007] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0008] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0009] The embodiment of the present disclosure provides a cold and hot cabinet to reduce the energy consumption of the cold and hot cabinet.

[0010] In some embodiments, the hot and cold cabinet includes: a shell, in which a first inner liner and a second inner liner arranged in an upper and lower manner are arranged, a first storage cavity is defined inside the first inner liner, and a second storage cavity is defined inside the second inner liner; a first air duct plate is arranged in the first inner liner, and a first air duct is defined between the first back plate of the first inner liner; a second air duct plate is arranged in the second inner liner, and a second air duct is defined between the second back plate of the second inner liner; a first evaporator is arranged in the first air duct, and the first evaporator is used to cool the air circulating between the first storage cavity and the first air duct when the first evaporator is in operation; a heating component is arranged in the first air duct, and the heating component is used to heat the air circulating between the first storage cavity and the first air duct when the heating component is in operation; a second evaporator is connected in parallel with the first evaporator, and is arranged in the second air duct, and the second evaporator is used to cool the air circulating between the second storage cavity and the second air duct.

[0011] In some embodiments, the heating assembly includes: a heat dissipation housing, enclosing an air flow channel in the same direction as the air flow; and a heating element, disposed in the air flow channel.

[0012] In some embodiments, the heating component also includes: a plurality of heat dissipation plates arranged in parallel in the air flow channel and fixedly connected to the heat dissipation shell, wherein the plurality of heat dissipation plates divide the air flow channel into a plurality of air duct spaces; a heat sink fixedly arranged in the air duct space, wherein the heat sink is bent in a circuitous manner to divide the air duct space into a plurality of independent heating air ducts.

[0013] In some embodiments, the heating element includes a PCT heating rod, which is inserted into the interior of the heat dissipation plate.

[0014] In some embodiments, a first evaporation pipeline is disposed inside the first evaporator; the cold and hot cabinet further includes: a control valve disposed at the inlet end of the first evaporation pipeline, the control valve being used to open the first evaporation pipeline when the first evaporator is running, or to close the first evaporation pipeline when the heating component is running.

[0015] In some embodiments, a second evaporation pipeline is disposed inside the second evaporator; the cold and hot cabinet further includes: a first capillary tube disposed at the inlet end of the first evaporation pipeline; a second capillary tube disposed at the inlet end of the second evaporation pipeline, wherein the flow rate of the second capillary tube is greater than the flow rate of the first capillary tube.

[0016] In some embodiments, a first return air outlet is provided at the upper end of the first air duct plate, a first bending plate is provided at the bottom of the first air duct plate, and an air outlet channel connected to the first air duct is formed between the first bending plate and the bottom wall of the first inner liner.

[0017] In some embodiments, the first bending plate extends obliquely from the lower end of the first air duct plate toward the interior of the first inner container.

[0018] In some embodiments, a second bending plate is provided at the top of the second air duct plate, a return air channel connected to the second air duct is formed between the second bending plate and the top wall of the second inner liner, and a first air outlet is formed between the bottom end of the second air duct plate and the bottom wall of the second inner liner.

[0019] In some embodiments, a plurality of guide strips are disposed on the first side surface of the second bending plate, and the plurality of guide strips divide the air outlet duct into a plurality of interconnected sub-ducts.

[0020] The hot and cold cabinet provided in the embodiments of the present disclosure can achieve the following technical effects:

[0021] A first liner and a second liner are arranged in the shell so as to adjust the temperature of the first storage cavity and the second storage cavity respectively. A first evaporator and a heating component are arranged in the first air duct formed between the first back plate of the first liner and the first air duct plate, and a second evaporator is arranged in the second air duct formed between the second back plate of the second liner and the second air duct plate. When the first evaporator is running and the heating component is turned off, the first storage cavity can be cooled; when the first evaporator is turned off and the heating component is running, the first storage cavity can be heated. At the same time, the second evaporator connected in parallel with the first evaporator can be used to cool the second storage cavity. In this way, while cooling the second storage cavity, the switching between cooling and heating in the first storage cavity can be conveniently realized to reduce the energy consumption of the cold and hot cabinets and reduce energy losses.

[0022] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0024] Figure 1 is a schematic structural diagram of a cold and hot cabinet provided by an embodiment of the present disclosure;

[0025] Figure 2 is a schematic structural diagram of another cold and hot cabinet provided by an embodiment of the present disclosure;

[0026] Figure 3 is a cross-sectional schematic diagram of a cold and hot cabinet provided in an embodiment of the present disclosure;

[0027] Figure 4 is a cross-sectional schematic diagram of another cold and hot cabinet provided by an embodiment of the present disclosure;

[0028] Figure 5 is a schematic diagram of the structure of a heating assembly provided in an embodiment of the present disclosure;

[0029] Figure 6 It is a schematic diagram of a refrigeration system flow of a cold and hot cabinet provided in an embodiment of the present disclosure.

[0030] Reference numerals:

[0031] 100, shell; 110, first liner; 111, first storage cavity; 113, air outlet channel; 120, second liner; 121, second storage cavity; 123, return air channel; 210, first air duct plate; 211, first return air outlet; 212, first bending plate; 220, second air duct plate; 221, second bending plate; 222, first air outlet; 223, second air outlet; 224, guide strip; 310, first evaporator; 320, second evaporator; 400, heating component; 410, heat dissipation shell; 420, heating element; 430, heat dissipation plate; 440, heat sink; 441, heating air duct; 510, first fan; 520, second fan; 600, control valve; 710, first capillary; 720, second capillary. DETAILED DESCRIPTION

[0032] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0033] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0034] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0035] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0036] Unless otherwise stated, the term "plurality" means two or more.

[0037] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0038] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0039] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0040] Combination Figures 1 to 6 As shown, an embodiment of the present disclosure provides a cold and hot cabinet, including a housing 100 , a first air duct plate 210 , a second air duct plate 220 , a first evaporator 310 , a second evaporator 320 and a heating assembly 400 .

[0041] The interior of the housing 100 is provided with a first inner liner 110 and a second inner liner 120 arranged in an upper and lower manner. The interior of the first inner liner 110 defines a first storage cavity 111, and the interior of the second inner liner 120 defines a second storage cavity 121. The first air duct plate 210 is provided in the first inner liner 110, and defines a first air duct between the first back plate of the first inner liner 110. The second air duct plate 220 is provided in the second inner liner, and defines a second air duct between the second back plate of the second inner liner 120. The first evaporator 310 is provided in the first air duct, and the first evaporator 310 is used to cool the air circulating between the first storage cavity 111 and the first air duct when in operation. The heating assembly 400 is provided in the first air duct. The heating assembly 400 is used to heat the air circulating between the first storage cavity 111 and the first air duct when in operation. The second evaporator 320 is connected in parallel with the first evaporator 310 and is disposed in the second air duct. The second evaporator 320 is used to cool the air circulating between the second storage cavity 121 and the second air duct.

[0042] The first inner liner 110 and the second inner liner 120 are arranged vertically inside the housing 100. Such arrangement allows the air in the first storage cavity 111 and the second storage cavity 121 to circulate independently, avoiding mutual interference of airflow between the two.

[0043] The first air duct plate 210 is disposed in the first inner liner 110, and a first air duct is formed between the first air duct plate 210 and the first back plate of the first inner liner 110. The second air duct plate 220 is disposed in the second inner liner, and a second air duct is defined between the second air duct plate 220 and the second back plate of the second inner liner 120. With such an arrangement, the first air duct and the second air duct can be made independent of each other, and the cross-flow of air between the first inner liner 110 and the second inner liner 120 can be avoided, so as to avoid affecting the cooling effect in the second storage cavity 121 when heating in the first storage cavity 111, so as to improve the operation efficiency of the cold and hot cabinet.

[0044] The first evaporator 310 and the heating assembly 400 are arranged in the first air duct, and the second evaporator is arranged in the second air duct. When the cold and hot cabinet is powered on, the second evaporator 320 is always in operation and keeps cooling the air circulating between the second storage cavity 121 and the second air duct; however, the first evaporator 310 and the heating assembly 400 are operated separately, so that the air circulating between the first storage cavity 111 and the first air duct can be cooled when the first evaporator 310 is in operation and the heating assembly 400 is turned off, or the air circulating between the first storage cavity 111 and the first air duct can be heated when the heating assembly 400 is in operation and the first evaporator 310 is turned off. By switching the operating states of the first evaporator 310 and the heating assembly 400, the switching of heating or cooling of the first storage cavity 111 can be realized, so that the long-term opening of the cold and hot cabinet door can be avoided, and the loss of cold in the first storage cavity 111 and / or the second storage cavity 121 can be avoided. In addition, the heating component 400 and the first evaporator 310 share the first air duct, and there is no need to set up a heating air duct or a cooling air duct separately, which is beneficial to reducing costs and reducing the structural complexity of the cold and hot cabinets.

[0045] Optionally, a first fan 510 is provided in the first air duct to provide power for the circulation of air between the first storage cavity 111 and the first air duct. Optionally, the heating assembly 400 is arranged close to the first fan 510 to avoid the heating assembly 400 affecting the structure of the first evaporator 310 during operation.

[0046] Optionally, a second fan 520 is provided in the second air duct to provide power for the circulation of air between the second storage cavity 121 and the second air duct.

[0047] The hot and cold cabinet provided by the embodiment of the present disclosure is adopted, and a first inner liner and a second inner liner are arranged in the shell, so as to adjust the temperature of the first storage cavity and the second storage cavity respectively. Among them, a first evaporator and a heating component are arranged in the first air duct formed between the first back plate of the first inner liner and the first air duct plate, and a second evaporator is arranged in the second air duct formed between the second back plate of the second inner liner and the second air duct plate. When the first evaporator is running and the heating component is turned off, the first storage cavity can be cooled; when the first evaporator is turned off and the heating component is running, the first storage cavity can be heated. At the same time, the second evaporator connected in parallel with the first evaporator can be used to cool the second storage cavity. In this way, while cooling the second storage cavity, the switching between cooling and heating in the first storage cavity can be conveniently realized to reduce the energy consumption of the hot and cold cabinet and reduce energy loss.

[0048] Optionally, the heating assembly 400 includes a heat dissipation housing 410 and a heating element 420 .

[0049] The heat dissipation housing 410 defines an air flow channel in the same direction as the air flow. The heating element 420 is disposed in the air flow channel.

[0050] The heat dissipation housing 410 encloses an airflow channel with openings at both ends, wherein the extension direction of the airflow channel is the same as the flow direction of the air in the first air duct to avoid obstruction of the air flow. Optionally, the heat dissipation housing 410 is fixedly connected to the peripheral side wall forming the first air duct to ensure that the air flows through the airflow channel as much as possible to achieve the purpose of heating. Optionally, the first air duct has a first air outlet and a first return air outlet, and the air flows in the direction from the return air outlet to the first air outlet.

[0051] Optionally, the heating element 420 is disposed in the air flow channel, which is beneficial for heating the air when the air flows through the air flow channel.

[0052] Optionally, the heating assembly 400 further includes a plurality of heat dissipation plates 430 and heat dissipation fins 440 .

[0053] A plurality of heat dissipation plates 430 are arranged in parallel in the air flow channel and fixedly connected to the heat dissipation housing 410. The plurality of heat dissipation plates 430 divide the air flow channel into a plurality of air duct spaces. The heat dissipation fins 440 are fixedly arranged in the air duct space, and the heat dissipation fins 440 are bent and formed to divide the air duct space into a plurality of heating air ducts 441 that are independent of each other.

[0054] When the heating element 420 is in operation, the heat sink 430 can be heated by conduction or radiation, thereby increasing the temperature of the heat sink 430. Furthermore, the heat sink 430 has a large contact area with the air flowing through it, which can increase the speed of heat dissipation to the air, thereby improving the heating effect on the air. Optionally, the heat sink 430 extends along the length direction of the heat dissipation housing 410 to reduce the difficulty and cost of installation.

[0055] The heat sink 440 formed by bending in a circuitous manner is fixedly arranged in the air duct space, thereby dividing the air duct space into a plurality of independent heating air ducts 441. In this way, when the air flows through the heating component 400, it can be dispersed into the plurality of heating air ducts 441, thereby increasing the contact area between the air and the heating component 400, so as to further improve the heating efficiency of the air.

[0056] Optionally, the heat sink 430 and the heat sink 440 are made of the same material, for example, aluminum or copper.

[0057] In some embodiments, the heating element 420 includes a PCT heating rod, which is inserted into the heat dissipation plate 430 .

[0058] Optionally, the PTC heating element has the advantages of low thermal resistance and high heat exchange efficiency, and is an automatic constant temperature, power-saving electric heater. After the temperature of the PTC heating element rises to a certain temperature, the package surface temperature will be maintained at about the distance temperature, thereby achieving automatic constant temperature. The heating element 420 includes a PTC heating rod, which can improve the safety of the heating assembly 400.

[0059] The heating element 420 is disposed inside the heat sink 430. In this way, the heating effect of the heat sink 430 can be improved on the one hand, and the stability of the heating element 420 can be improved on the other hand.

[0060] Optionally, a first evaporation pipeline is provided inside the first evaporator 310. The cold and hot cabinet further includes a control valve 600. The control valve 600 is provided at the inlet end of the first evaporation pipeline. The control valve 600 is used to conduct the first evaporation pipeline when the first evaporator 310 is running, or to close the first evaporation pipeline when the heating component 400 is running. By setting the control valve 600, the control of the first evaporator 310 can be achieved. When the first storage cavity 111 needs to be heated, the control valve 600 is closed to close the inlet end of the first evaporation pipeline, so that the refrigerant cannot circulate, and then the first evaporator 310 does not participate in the refrigeration cycle. At this time, the heating component 400 operates alone to achieve heating of the air. When the first storage cavity 111 needs to be refrigerated, the heating component 400 stops running. At this time, the control valve 600 is opened to conduct the first evaporation pipeline, so that the refrigerant can circulate in the first evaporator 310, thereby achieving refrigeration of the air flowing through.

[0061] Optionally, a second evaporation pipeline is disposed inside the second evaporator 320. The cold and hot cabinet further includes a first capillary tube 710 and a second capillary tube 720. The first capillary tube 710 is disposed at the inlet end of the first evaporation pipeline. The second capillary tube 720 is disposed at the inlet end of the second evaporation pipeline. The flow rate of the second capillary tube 720 is greater than the flow rate of the first capillary tube 710.

[0062] Optionally, the cold and hot cabinet also includes a compressor and a condenser, and the compressor, the condenser, the throttling element, and the first evaporator and the second evaporator are connected in sequence through the refrigerant. Among them, the condenser has a first outlet and a second outlet, the first outlet is connected to the first evaporator 310 through the first branch, and the second outlet is connected to the second evaporator 320 through the second branch. However, at the outlet of the condenser, the refrigerant is not completely cooled into a liquid state, and is usually in a gas-liquid two-phase state. Based on the instability of the gas-liquid two-phase of the refrigerant, the pressure changes of the inlet and outlet of the two branches are likely to form a situation where one branch has too much refrigerant and the other branch has too little refrigerant, thereby causing uncertainty in the distribution of refrigerant during the refrigeration process, and then resulting in uneven distribution of refrigerant to the first evaporator 310 and the second evaporator 320. Therefore, when the first evaporator 310 and the second evaporator 320 are both running, the temperature reduction speed in the first storage cavity 111 and the second storage cavity 121 will be inconsistent. That is, there may be too much refrigerant in the first evaporator 310 and too little refrigerant in the second evaporator 320; or, there may be too little refrigerant in the first evaporator 310 and too much refrigerant in the second evaporator 320. In order to avoid this situation, the flow rate of the second capillary tube 720 is set to be greater than the flow rate of the first capillary tube 710, so as to create a pressure difference to improve the uniformity of the distribution of the refrigerant in the first capillary tube 710 and the second capillary tube 720. Preferably, the difference between the flow rate of the second capillary tube 720 and the flow rate of the first capillary tube 710 is 1 to 3 L / min.

[0063] Optionally, a first return air port 211 is provided at the upper end of the first air duct plate 210, a first bending plate 212 is provided at the bottom of the first air duct plate, and an air outlet channel 113 connected to the first air duct is formed between the first bending plate 212 and the bottom wall of the first liner 110. Driven by the first fan 510, the air in the first storage cavity 111 can flow into the first air duct through the air outlet channel 113. Further, after the air is heated or cooled in the first air duct, it flows back to the first storage cavity 111 from the first return air port 211 through the drive of the first fan 510 to achieve heating or cooling of the first storage cavity 111. In addition, such an arrangement can avoid the short circuit of the air flow between the first return air port 211 and the outlet of the air outlet channel 113, thereby ensuring the temperature regulation of the first storage cavity 111.

[0064] Optionally, the first bending plate 212 extends obliquely from the lower end of the first air duct plate 210 toward the interior of the first liner 110. This arrangement can tighten the outlet of the air outlet channel 113 to prevent a large amount of cooled air from flowing into the first air duct in the first storage cavity 111 at the same time.

[0065] Optionally, a second bending plate 221 is provided at the top of the second air duct plate 220, a return air channel 123 connected to the second air duct is formed between the second bending plate 221 and the top wall of the second inner liner 120, and a first air outlet 222 is formed between the bottom end of the second air duct plate 220 and the bottom wall of the second inner liner 120.

[0066] Driven by the second fan 520, the air in the second storage cavity 121 can flow into the second air duct through the first air outlet 222. Furthermore, after the air is cooled in the second air duct, it is driven by the second fan 520 to flow back into the second storage cavity 121 from the return air duct 123 to achieve heating or cooling of the second storage cavity 121. In addition, such an arrangement can avoid the short circuit of the air flow between the outlet of the return air duct 123 and the first air outlet 222, thereby ensuring the temperature regulation of the second storage cavity 121.

[0067] Optionally, a second air outlet 223 is provided at the lower end of the second air duct plate 220. By arranging the second air outlet 223 and the first air outlet 222, the air volume of the second air duct can be increased to ensure the cooling effect for the second storage cavity 121. The second air outlet 223 is arranged toward the second evaporator 320.

[0068] Optionally, a plurality of guide strips 224 are provided on the first side surface of the second bending plate 221 , and the plurality of guide strips 224 divide the return air channel 123 into a plurality of interconnected sub-air channels.

[0069] The first side surface of the second bending plate 221 is the side surface facing the top wall of the second liner 120. The return air channel 123 is divided into a plurality of interconnected sub-air channels by a plurality of guide strips 224, and the cooled air is dispersed into the plurality of sub-air channels in the return air channel 123, thereby preventing the outflow airflow from gathering in the return air channel 123 and improving the outflow efficiency. In addition, the outflow air can be dispersedly flowed into the second air channel.

[0070] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A hot and cold cabinet, characterized in that: include: A housing having a first liner and a second liner arranged up and down therein, wherein the first liner defines a first storage cavity, and the second liner defines a second storage cavity; A first air duct plate is disposed on the first inner liner and defines a first air duct between the first air duct plate and the first back plate of the first inner liner; A second air duct plate is disposed on the second inner liner and defines a second air duct between the second air duct plate and the second back plate of the second inner liner; A first evaporator is disposed in the first air duct, and when in operation, the first evaporator is used to cool the air circulating between the first storage cavity and the first air duct; A heating component is disposed in the first air duct, and when in operation, the heating component is used to heat the air circulating between the first storage cavity and the first air duct; The second evaporator is connected in parallel with the first evaporator and is arranged in the second air duct. The second evaporator is used to cool the air circulating between the second storage cavity and the second air duct.

2. The hot and cold cabinet according to claim 1, characterized in that: The heating assembly includes: The heat dissipation housing encloses an air flow channel in the same direction as the air flow; The heating element is arranged in the air flow channel.

3. The hot and cold cabinet according to claim 2, characterized in that: The heating assembly also includes: A plurality of heat dissipation plates are arranged in parallel in the air flow channel and fixedly connected to the heat dissipation housing, wherein the plurality of heat dissipation plates divide the air flow channel into a plurality of air duct spaces; The heat sink is fixedly arranged in the air duct space, and the heat sink is formed by circuitous bending to divide the air duct space into a plurality of mutually independent heating air ducts.

4. The hot and cold cabinet according to claim 2, characterized in that: The heating element comprises: The PCT heating rod is inserted into the heat sink.

5. The hot and cold cabinet according to claim 1, characterized in that: A first evaporation pipeline is arranged inside the first evaporator; The hot and cold cabinet also includes: The control valve is arranged at the inlet end of the first evaporation pipeline, and the control valve is used to conduct the first evaporation pipeline when the first evaporator is running, or to close the first evaporation pipeline when the heating component is running.

6. The hot and cold cabinet according to claim 5, characterized in that: A second evaporation pipeline is arranged inside the second evaporator; The hot and cold cabinet also includes: A first capillary tube is arranged at the inlet end of the first evaporation pipeline; The second capillary tube is arranged at the inlet end of the second evaporation pipeline, wherein the flow rate of the second capillary tube is greater than the flow rate of the first capillary tube.

7. The hot and cold cabinet according to any one of claims 1 to 6, characterized in that: A first return air port is provided at the upper end of the first air duct plate, a first bending plate is provided at the bottom of the first air duct plate, and an air outlet channel connected to the first air duct is formed between the first bending plate and the bottom wall of the first liner.

8. The hot and cold cabinet according to claim 7, characterized in that: The first bending plate extends obliquely from the lower end of the first air duct plate toward the interior of the first inner container.

9. The hot and cold cabinet according to any one of claims 1 to 6, characterized in that: A second bending plate is arranged at the top end of the second air duct plate, a return air channel connected to the second air duct is formed between the second bending plate and the top wall of the second inner liner, and a first air outlet is formed between the bottom end of the second air duct plate and the bottom wall of the second inner liner.

10. The hot and cold cabinet according to claim 9, characterized in that: A plurality of guide strips are disposed on the first side surface of the second bending plate, and the plurality of guide strips divide the air outlet duct into a plurality of sub-ducts that are interconnected.

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