Evaporator assembly and refrigeration equipment

Abstract

The utility model relates to the technical field of refrigeration equipment, and provides an evaporator assembly and the refrigeration equipment, the evaporator assembly comprises an evaporator, a heat exchange plate and a heater, the evaporator comprises a refrigerant coil, the heat exchange plate is arranged on one side of the evaporator in the first direction, and the refrigerant coil is arranged on a projection plane perpendicular to the first direction; at least part of the refrigerant coil pipe is located in the projection range of the heat exchange plate. The heater is connected with the heat exchange plate. According to the evaporator assembly, the heat exchange efficiency between the heater and the evaporator can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and particularly relates to an evaporator assembly and a refrigeration equipment. Background Art

[0002] This section aims to provide background or context for the embodiments of the present application. The descriptions herein are not admitted to be prior art just because they are included in this section.

[0003] Taking a refrigerator as an example of the refrigeration equipment, a refrigerator generally includes a heater and an evaporator for refrigeration. During the refrigeration process, the evaporator is prone to frosting, resulting in abnormal refrigeration and out-of-control temperature inside the refrigerator. The heater is used to generate heat energy to defrost the evaporator. In the related art, the heat exchange efficiency between the heater and the evaporator is poor, and the defrosting effect is relatively poor. Summary of the Utility Model

[0004] In view of this, embodiments of the present application are expected to provide an evaporator assembly and a refrigeration equipment, which can improve the heat exchange efficiency between the heater and the evaporator.

[0005] A first aspect of embodiments of the present application provides an evaporator assembly, including:

[0006] An evaporator, including a refrigerant coil;

[0007] A heat exchange plate, disposed on one side of the evaporator along a first direction. In a projection plane perpendicular to the first direction, at least a part of the refrigerant coil is within the projection range of the heat exchange plate;

[0008] A heater, connected to the heat exchange plate.

[0009] In some embodiments, the evaporator includes a plurality of fins, and the fins are disposed on the refrigerant coil. In a projection plane perpendicular to the first direction, the projections of all the fins are within the projection range of the heat exchange plate.

[0010] In some embodiments, the heat exchange plate is clamped between the heater and the evaporator.

[0011] In some embodiments, the evaporator assembly includes a heat insulation member, and the heater is clamped between the heat insulation member and the heat exchange plate.

[0012] In some embodiments, the evaporator assembly includes a defrosting sensor, and the defrosting sensor is disposed on the refrigerant coil.

[0013] In some embodiments, the refrigerant coil includes a refrigerant inlet section and a plurality of straight pipe sections spaced apart along a second direction. The straight pipe section closest to the first side of the second direction is the first straight pipe section. The refrigerant inlet section communicates with the first straight pipe section, and the defrost sensor is disposed on the first straight pipe section, wherein the first direction and the second direction are perpendicular.

[0014] In some embodiments, the evaporator includes a plurality of fins, and at least one fin is disposed on each straight pipe section. The defrost sensor is spaced apart from the fins.

[0015] In some embodiments, the evaporator assembly includes a fixing bracket, and both the refrigerant coil and the heat exchange plate are connected to the fixing bracket.

[0016] In some embodiments, the fixing bracket includes a frame body and a fixing piece connected to each other. The heat exchange plate is formed with a positioning hole, and the fixing piece passes through the positioning hole and is bent toward the heat exchange plate.

[0017] In a second aspect of the embodiments of the present application, a refrigeration device is provided, including:

[0018] A box body, forming an air duct and a storage chamber;

[0019] The evaporator assembly according to any one of the above, disposed in the air duct.

[0020] In the evaporator assembly provided by the embodiments of the present application, the heater is connected to the heat exchange plate, and the heat exchange plate is disposed on one side of the evaporator along the first direction. Compared with the related art in which heat transfer is performed by means of heat convection or heat radiation of air, the present application uses the heat exchange plate to lift the heat exchange panel, and the heat of the heater can be transferred to the evaporator through heat conduction, heat convection, heat radiation, etc., which can improve the heat exchange efficiency between the heater and the refrigerant coil and enhance the defrosting effect of the evaporator. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of an evaporator assembly provided by some embodiments of the present application;

[0022] Figure 2 is Figure 1 a schematic structural diagram of the structure shown in another perspective;

[0023] Figure 3 is Figure 2 an enlarged view of part A in;

[0024] Figure 4 is a schematic structural diagram of a fixing bracket provided by some embodiments of the present application;

[0025] Figure 5Schematic structural diagram of a refrigeration device provided by some embodiments of the present application, wherein solid arrows indicate the flow path of the air flow.

[0026] Description of reference numerals

[0027] Refrigeration device 1000;

[0028] Cabinet 200; air duct 200a; storage compartment 200b;

[0029] Evaporator assembly 100;

[0030] Evaporator 10; refrigerant coil 11; refrigerant inlet section 111; straight pipe section 112; first straight pipe section 112a; second straight pipe section 112b; fins 12;

[0031] Heat exchange plate 20;

[0032] Heater 30;

[0033] Thermal insulation member 40;

[0034] Defrosting sensor 50;

[0035] Fixed bracket 60; frame body 61; limiting hole 61a; fixing piece 62; mounting ear 63; fixing hole 63a. Detailed implementation manners

[0036] The following further describes in detail the implementation manners of the present application in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0037] In the various specific technical features and each embodiment described in the detailed implementation manners, they can be combined in any appropriate manner without contradiction. For example, different combinations of specific technical features / embodiments can form different implementation manners. To avoid unnecessary repetition, various possible combination manners of the specific technical features / embodiments in the present application will not be described separately. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. The present application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0038] In the related art, heaters are arranged at intervals below the evaporator, and the heaters are not in contact with the evaporator. The heat energy generated by the heaters is usually transferred to the evaporator in the form of heat convection or heat radiation, resulting in low heat exchange efficiency and poor defrosting effect.

[0039] Please refer to Figures 1 to 4, an embodiment of the present application provides an evaporator assembly 100, including an evaporator 10, a heat exchange plate 20, and a heater 30. The evaporator 10 includes a refrigerant coil 11. The heat exchange plate 20 is disposed on one side of the evaporator 10 along a first direction. In a projection plane perpendicular to the first direction, at least a part of the refrigerant coil 11 is within the projection range of the heat exchange plate 20; the heater 30 is connected to the heat exchange plate 20.

[0040] The refrigerant coil 11 is used for circulating refrigerant. The refrigerant exchanges heat with the flowing air through the refrigerant coil 11 to cool the flowing air. That is to say, the evaporator 10 is a device that absorbs heat of the refrigerant to cool the air flow. Exemplarily, after the low-temperature liquid-phase refrigerant enters the refrigerant coil 11, it absorbs heat, the temperature of the surface of the refrigerant coil 11 decreases, and the air flow outside the refrigerant coil 11 releases heat and cools down.

[0041] The refrigerant is a flowable fluid. The refrigerant can be a fluid that is easy to absorb heat and turn into gas and is easy to release heat and turn into liquid. The refrigerant can undergo a phase change after absorbing or releasing heat.

[0042] The specific type of the refrigerant is not limited. For example, it can be R12 (dichlorodifluoromethane), R22 Freon, carbon dioxide, etc.

[0043] The heater 30 is used for generating heat energy.

[0044] The heater 30 is connected to the heat exchange plate 20. Specifically, the heater 30 is heat-transfer connected to the heat exchange plate 20. Heat-transfer connection means that two structural members are in direct contact or indirectly connected through a heat-conducting structure so that heat conduction can occur between the two structural members. That is to say, the heat energy generated by the heater 30 can be conducted to the heat exchange plate 20, and the heat energy is conducted to the refrigerant coil 11 through the heat exchange plate 20, thereby melting the frost layer on the surface of the refrigerant coil 11 to achieve the purpose of defrosting.

[0045] At least a part of the refrigerant coil 11 is within the projection range of the heat exchange plate 20. Thus, the heat exchange area between the heater 30 and the refrigerant coil 11 is increased through the heat exchange plate 20, and the defrosting effect of the evaporator 10 is improved.

[0046] The heat exchange plate 20 is a solid-phase heat-conducting medium. The heat exchange plate 20 can have good heat conductivity and can reduce heat energy loss. The specific material of the heat exchange plate 20 is not limited. Exemplarily, the heat exchange plate 20 can be a metal. For example, the heat exchange plate 20 can be a copper structure, an aluminum structure, or an aluminum alloy structure, etc.

[0047] The specific type of the heater 30 is not limited. Exemplarily, the heater 30 can be a device that converts electrical energy into heat energy. For example, an electric heating tube, a resistance wire, or a similar heating device.

[0048] The evaporator assembly 100 provided by the embodiment of the present application, the heater 30 is connected to the heat exchange plate 20, the heat exchange plate 20 is arranged on one side of the evaporator 10 along the first direction. Compared with the prior art in which heat transfer is carried out by means of heat convection or heat radiation of air, the present application uses the heat exchange plate 20 to improve the heat exchange panel, and the heat of the heater 30 can be transferred to the evaporator 10 through heat conduction, heat convection and heat radiation, etc., which can improve the heat exchange efficiency between the heater 30 and the refrigerant coil 11 and enhance the defrosting effect of the evaporator 10.

[0049] In one embodiment, the heat exchange plate 20 can be a heat pipe heat exchange plate 20, that is to say, the heat exchange plate 20 can conduct heat energy relatively evenly to each part of the refrigerant coil 11, preventing the local temperature of the refrigerant coil 11 from being too low or too high, and enhancing the defrosting effect of the refrigerant coil 11.

[0050] Please refer to Figure 5 , the embodiment of the present application provides a refrigeration device 1000, including a box body 200 and the evaporator assembly 100 in any embodiment of the present application, the box body 200 is formed with an air duct 200a and a storage chamber 200b, and the evaporator assembly 100 is arranged in the air duct 200a.

[0051] The storage chamber 200b is used to place food or other items. The temperature in the storage chamber 200b is usually lower than the ambient temperature, and it can provide the function of refrigerating items.

[0052] The refrigeration device 1000 provided by the embodiment of the present application includes but is not limited to a refrigerator or a freezer, etc.

[0053] The evaporator assembly 100 is used to refrigerate the storage chamber 200b. Exemplarily, please refer to Figure 5 , the storage chamber 200b communicates with the air duct 200a, the air flow in the air duct 200a flows through the evaporator 10, the refrigerant in the refrigerant coil 11 absorbs the heat in the air flow to form a low-temperature air flow, and the low-temperature air flow flows into the storage chamber 200b through the air duct 200a. The low-temperature air flow flowing through the items exchanges heat with the items and then flows into the air duct 200a, and after being cooled by the evaporator 10, it flows into the storage chamber 200b again. In this way, it cycles continuously and plays the role of refrigerating items.

[0054] In some embodiments, please refer to Figure 2 and Figure 5 , the air flow generally flows through the evaporator 10 along the second direction, and the heater 30 is located on one side of the evaporator 10 along the first direction, wherein the first direction and the second direction are perpendicular. In this way, the influence of the heater 30 on the fluidity of the air flow is small, and the air flow can flow through the evaporator 10 smoothly, improving the heat exchange efficiency.

[0055] In some embodiments, please refer to Figure 1 andFigure 2 The evaporator 10 includes a plurality of fins 12 disposed on the refrigerant coil 11. In the projection plane perpendicular to the first direction, the projections of all the fins 12 are within the projection range of the heat exchange plate 20. In this way, the heat exchange plate 20 can conduct heat energy to each fin 12, thereby improving the defrosting effect of the evaporator 10.

[0056] It should be noted that in this application, "a plurality of" means that the quantity includes two or more.

[0057] In some embodiments, please refer to Figure 2 and Figure 3 , the heat exchange plate 20 is clamped between the heater 30 and the evaporator 10. That is to say, both the heater 30 and the evaporator 10 are in contact with the heat exchange plate 20. In this way, the distance between the heater 30, the heat exchange plate 20 and the evaporator 10 can be reduced, thereby reducing the loss of heat energy during the conduction process and improving the heat exchange efficiency. At the same time, the structures of the heater 30, the heat exchange plate 20 and the evaporator 10 are compact, and the connection stability of the heater 30, the heat exchange plate 20 and the evaporator 10 can also be enhanced.

[0058] In one embodiment, the heater 30 is adhesively connected to the heat exchange plate 20, which can reduce the production cost.

[0059] In one embodiment, the evaporator assembly 100 includes a first fastener that passes through the heat exchange plate 20 and the evaporator 10, which can enhance the connection stability between the heat exchange plate 20 and the evaporator 10.

[0060] The specific type of the first fastener is not limited. For example, the first fastener can be a rivet.

[0061] In some embodiments, please refer to Figure 3 , the evaporator assembly 100 includes a heat insulation member 40, and the heater 30 is clamped between the heat insulation member 40 and the heat exchange plate 20. The heat insulation member 40 is a structure with a thermal conductivity less than that of the heat exchange plate 20. The heat insulation member 40 can be prepared from a material with a low thermal conductivity. In this way, heat energy is difficult to diffuse outward through the heat insulation member 40, and the heat insulation member 40 plays a good heat preservation role.

[0062] The heater 30 is clamped between the heat insulation member 40 and the heat exchange plate 20. That is to say, the heater 30 is in direct contact with the heat insulation member 40. The heat insulation member 40 can block part of the heat energy from diffusing toward the side away from the heat exchange plate 20, so that more heat energy is conducted toward the side of the heat exchange plate 20, and then conducted to the refrigerant coil 11, further improving the defrosting effect of the evaporator 10.

[0063] Exemplarily, the heat insulation member 40 can be in a plate shape. In this way, the heat insulation area can be increased and the heat energy loss can be reduced.

[0064] In one embodiment, the heat insulation member 40 is adhesively connected to the box body 200, which can reduce the production cost.

[0065] In some embodiments, please refer to Figure 1 , the evaporator assembly 100 includes a defrost sensor 50, and the defrost sensor 50 is disposed on the refrigerant coil 11. That is to say, the defrost sensor 50 is connected to the refrigerant coil 11.

[0066] The defrost sensor 50 is used to detect the temperature on the surface of the refrigerant coil 11 to determine whether it is necessary to turn on the heater 30 to defrost the refrigerant coil 11. Exemplarily, when the temperature measured by the defrost sensor 50 is 0 °C (Celsius) and a frost layer is formed on the surface of the refrigerant coil 11, the heater 30 is turned on to defrost the refrigerant coil 11. When the temperature measured by the defrost sensor 50 is 2 °C and no frost layer is formed on the surface of the refrigerant coil 11, the heater 30 is turned off.

[0067] Please continue to refer to Figure 1 , the defrost sensor 50 is disposed on the refrigerant coil 11, which can improve the temperature sensing effect of the defrost sensor 50, so that the defrost sensor 50 can more accurately feedback whether a frost layer is formed on the surface of the refrigerant coil 11, preventing frost blockage.

[0068] The specific type of the defrost sensor 50 is not limited. For example, the defrost sensor 50 can be a resistive defrost sensor 50.

[0069] In some embodiments, please refer to Figure 1 , the refrigerant coil 11 includes a refrigerant inlet section 111 and a plurality of straight pipe sections 112 spaced apart along the second direction. The straight pipe section 112 closest to the first side in the second direction is the first straight pipe section 112a, the refrigerant inlet section 111 is communicated with the first straight pipe section 112a, and the defrost sensor 50 is disposed on the first straight pipe section 112a.

[0070] Exemplarily, please refer to Figure 1 , the straight pipe section 112 can extend along the third direction.

[0071] Please continue to refer to Figure 1 , define the straight pipe section 112 closest to the second side in the second direction as the second straight pipe section 112b, wherein the first side and the second side in the second direction are opposite directions.

[0072] It should be understood that the low-temperature liquid refrigerant enters the first straight pipe section 112a from the refrigerant inlet section 111, flows through a plurality of straight pipe sections 112 arranged along the second direction in sequence, and finally enters the second straight pipe section 112b. During this process, the liquid refrigerant exchanges heat with the air flow flowing through the refrigerant coil 11. The liquid refrigerant absorbs heat and gradually converts into a high-temperature gaseous refrigerant. That is to say, the temperature of the refrigerant closer to the first straight pipe section 112a is lower, and the temperature of the refrigerant closer to the second straight pipe section 112b is higher. In this way, compared with the second straight pipe section 112b and its surrounding parts, the first straight pipe section 112a and its surrounding parts are more likely to form a frost layer. Thus, the defrosting sensor 50 is arranged on the first straight pipe section 112a, which can more accurately feedback whether a frost layer is formed on the surface of the refrigerant coil 11, so as to be able to turn on the heater 30 in time to melt the frost layer on the surface of the refrigerant coil 11 and prevent frost blockage.

[0073] In some embodiments, please refer to Figures 1 to 3 , the evaporator 10 includes a plurality of fins 12. At least one fin 12 is arranged on each straight pipe section 112, and the defrosting sensor 50 is spaced apart from the fin 12. That is to say, the defrosting sensor 50 does not contact the fin 12. In this way, it can prevent the fin 12 from contacting the defrosting sensor 50, resulting in the temperature of the fin 12 affecting the temperature measurement of the defrosting sensor 50, and the defrosting sensor 50 is likely to reach the exit temperature and cannot accurately feedback whether the frost layer on the refrigerant coil 11 has melted.

[0074] The exit temperature is the temperature required for the defrosting sensor 50 to detect the temperature to reach the defrosting exit state. That is to say, when the temperature detected by the defrosting sensor 50 reaches the exit temperature, the heater 30 is turned off and the refrigerant coil 11 stops defrosting.

[0075] In some embodiments, please refer to Figure 1 and Figure 4 , the evaporator assembly 100 includes a fixing bracket 60, and both the refrigerant coil 11 and the heat exchange plate 20 are connected to the fixing bracket 60. In this way, the refrigerant coil 11, the heat exchange plate 20 and the fixing bracket 60 form an integral structure, and the structural stability of the three is better. In addition, during the assembly process of the evaporator assembly 100, the refrigerant coil 11, the heat exchange plate 20 and the fixing bracket 60 can be assembled first, then connected to other components, and finally the evaporator assembly 100 is integrally installed in the refrigeration device 1000, which is convenient and fast and improves the assembly efficiency.

[0076] Exemplarily, please refer to Figure 1 , the evaporator assembly 100 includes two fixing brackets 60. The two fixing brackets 60 are respectively arranged on both sides of the refrigerant coil 11 along the third direction. Both the refrigerant coil 11 and the heat exchange plate 20 are connected to the two fixing brackets 60, thereby further enhancing the structural stability of the evaporator assembly 100. Among them, the first direction, the second direction and the third direction are perpendicular to each other.

[0077] In some embodiments, please refer to Figure 3 and Figure 4 , the fixing bracket 60 includes a frame body 61 and a fixing piece 62 which are connected to each other. The heat exchange plate 20 is formed with positioning holes, and the fixing piece 62 passes through the positioning holes and bends towards the heat exchange plate 20. In this way, after the fixing piece 62 is bent, the heat exchange plate 20 can be abutted against the frame body 61, thereby enhancing the connection stability between the heat exchange plate 20 and the frame body 61. In addition, the fixing piece 62 plays a positioning role for the heat exchange plate 20, and can improve the assembly efficiency.

[0078] In one embodiment, please refer to Figure 4 , the frame body 61 is formed with a plurality of limiting holes 61a, and each straight pipe section 112 passes through the corresponding limiting hole 61a respectively, and the straight pipe section 112 is fixedly connected to the fixing bracket 60 through the limiting hole 61a. Thus, the limiting holes 61a play a positioning role for the straight pipe section 112, and can improve the assembly efficiency.

[0079] In some embodiments, please refer to Figure 4 , the fixing bracket 60 includes a mounting ear 63 connected to the frame body 61 and a second fastener. The mounting ear 63 is formed with a fixing hole 63a, and the second fastener passes through the fixing hole 63a and the box body 200 of the refrigeration device 1000. In this way, the connection stability between the evaporator assembly 100 and the box body 200 can be enhanced.

[0080] The specific type of the second fastener is not limited. For example, the second fastener can be a screw or a bolt, etc.

[0081] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments" and "exemplary" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0082] The various embodiments / embodiment modes provided by the present application can be combined with each other without generating contradictions. The above are only the preferred embodiments of the present application, and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An evaporator assembly, characterized in that, Comprising: An evaporator, including a refrigerant coil; A heat exchange plate, disposed on one side of the evaporator along a first direction, and at least a part of the refrigerant coil is within the projection range of the heat exchange plate on a projection plane perpendicular to the first direction; A heater, connected to the heat exchange plate.

2. The evaporator assembly according to claim 1, wherein, The evaporator includes a plurality of fins, the fins are disposed on the refrigerant coil, and on a projection plane perpendicular to the first direction, the projections of all the fins are within the projection range of the heat exchange plate.

3. The evaporator assembly according to claim 1, wherein The heat exchange plate is clamped between the heater and the evaporator.

4. The evaporator assembly according to claim 3, wherein The evaporator assembly includes a heat insulation member, and the heater is clamped between the heat insulation member and the heat exchange plate.

5. The evaporator assembly according to claim 1, wherein, The evaporator assembly includes a defrosting sensor, and the defrosting sensor is disposed on the refrigerant coil.

6. The evaporator assembly according to claim 5, wherein, The refrigerant coil includes a refrigerant inlet section and a plurality of straight pipe sections spaced apart along a second direction. The straight pipe section closest to the first side in the second direction is the first straight pipe section. The refrigerant inlet section communicates with the first straight pipe section, and the defrosting sensor is disposed on the first straight pipe section, wherein the first direction and the second direction are perpendicular.

7. The evaporator assembly according to claim 6, wherein, The evaporator includes a plurality of fins, at least one fin is disposed on each straight pipe section, and the defrosting sensor is spaced apart from the fins.

8. The evaporator assembly according to any one of claims 1 to 7, characterized in that, The evaporator assembly includes a fixing bracket, and both the refrigerant coil and the heat exchange plate are connected to the fixing bracket.

9. The evaporator assembly according to claim 8, wherein, The fixing bracket includes a frame body and a fixing piece connected to each other. The heat exchange plate is formed with a positioning hole, and the fixing piece passes through the positioning hole and is bent towards the heat exchange plate.

10. A refrigeration device, characterized in that, Comprising: A box body, formed with an air duct and a storage chamber; The evaporator assembly according to any one of claims 1 to 9, disposed in the air duct.

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