Electric appliance box and heat pump system

Abstract

The invention discloses an electric appliance box and a heat pump system, the electric appliance box comprises a metal shell and an electrical assembly installed in the metal shell, a metal heat dissipation block is convexly arranged on the outer surface of one side, adjacent to the electrical assembly, of the metal shell, and the surface of one side, away from the metal shell, of the metal heat dissipation block is an inner arc surface; and the inner cambered surface is attached to the cylindrical surface of a shell of a gas-liquid separator of the heat pump system. According to the technical scheme, the heat generated when the electric components of the electric appliance box work is transmitted to the gas-liquid separator, so that the heat of the electric appliance box is utilized by the heat pump system again through the gas-liquid separator of the heat pump system while the electric appliance box is effectively cooled, and the energy efficiency of the heat pump system is improved.

Description

Technical Field

[0001] This application relates to the technical field of air supply, and particularly to an electrical box and a heat pump system. Background Art

[0002] In the electrical box of a conventional modular unit or a large-capacity large heat pump unit, the electrical components inside generate a very large amount of heat during operation. Therefore, to ensure its normal operation, effective heat dissipation treatment needs to be carried out on it. However, in the existing heat pump systems, the cooling and heat dissipation of the electrical box are mainly completed by installing heat sinks and air cooling, or by placing the refrigerant pipeline close to the electrical box and using the refrigerant to take away the heat of the electrical box. However, no matter which of the above heat dissipation methods is used, the heat of the electrical box is simply carried to the external environment, and the heat generated by the electrical box cannot be reasonably utilized, resulting in the waste of this heat. Summary of the Invention

[0003] An embodiment of this application provides an electrical box and a heat pump system, aiming to improve the technical problem that the existing heat pump system only simply carries the heat of the electrical box to the external environment, and the heat generated by the electrical box cannot be reasonably utilized, resulting in the waste of this heat.

[0004] To this end, in the first aspect of the embodiment of this application, an electrical box is provided, which is applied in a heat pump system. The electrical box includes a metal shell and electrical components installed inside the metal shell. A metal heat dissipation block is convexly provided on the outer surface of one side of the metal shell adjacent to the electrical components. The surface of the metal heat dissipation block away from the metal shell is an inner arc surface, and the inner arc surface is arranged in a fitting manner with the cylindrical surface of the shell of the gas-liquid separator of the heat pump system.

[0005] Optionally, in some embodiments of this application, the radian of the inner arc surface is the same as the radian of the cylindrical surface of the shell of the gas-liquid separator of the heat pump system, so that the inner arc surface can be completely arranged in a fitting manner with the cylindrical surface of the shell of the gas-liquid separator of the heat pump system.

[0006] Optionally, in some embodiments of this application, a heat dissipation silicone grease gasket is also attached or heat dissipation silicone gel is coated on the inner arc surface, so that the inner arc surface can be completely arranged in a fitting manner with the cylindrical surface of the shell of the gas-liquid separator of the heat pump system through the heat dissipation silicone grease gasket or the heat dissipation silicone gel.

[0007] Optionally, in some embodiments of this application, the metal heat dissipation block and the metal shell are integrally formed by a mold or tightly connected through a detachable connection structure or a welding structure.

[0008] Optionally, in some embodiments of the present application, the metal housing includes a metal lower cover and a metal upper cover having a mounting groove. The electrical component is disposed in the mounting groove and is disposed closely against the groove wall of the mounting groove. A metal heat dissipation block protrudes from a surface of the metal lower cover away from the side where the mounting groove is located. The metal upper cover covers the notch of the mounting groove to seal the mounting groove to form a mounting cavity.

[0009] Optionally, in some embodiments of the present application, a plurality of first heat dissipation ribs protrude from a surface of the metal upper cover away from the metal lower cover; and / or,

[0010] A plurality of second heat dissipation ribs protrude from the outer peripheral wall of the mounting cavity.

[0011] Optionally, in some embodiments of the present application, a sealing rubber ring is clamped at the connection between the metal upper cover and the metal lower cover, and a waterproof breathable valve communicating the inside and outside of the mounting cavity is disposed on the metal housing; and / or,

[0012] At least one waterproof air-to-air plug connector is disposed on the metal housing. The electrical component is electrically connected to other electrical components located outside the metal housing in the heat pump system through the at least one waterproof air-to-air plug connector.

[0013] Optionally, in some embodiments of the present application, at least one wire passing hole is further opened on the metal housing. A waterproof wire passing sheath is disposed around each wire passing hole. When the electrical connection wire of the electrical component is led out through the corresponding wire passing hole, an interference fit with the corresponding waterproof wire passing sheath is used to achieve corresponding waterproof protection.

[0014] Optionally, in some embodiments of the present application, the electrical appliance box further includes at least one heat dissipation fan. The at least one heat dissipation fan is respectively disposed in the mounting groove to stir the internal air of the mounting cavity in a closed state to make it flow rapidly.

[0015] Optionally, in some embodiments of the present application, the electrical appliance box includes a temperature sensor and a temperature control module built in the metal housing. Among them,

[0016] The temperature sensor is used to detect the internal temperature in the mounting cavity and obtain the ambient temperature of the room where the electrical appliance box is located, and calculate the difference between the internal temperature and the ambient temperature;

[0017] The temperature control module includes a heating plate, which is used to start the heating plate to heat the mounting cavity when the difference is less than a first preset threshold, and stop the heating plate to stop heating the mounting cavity when the difference is greater than a second preset threshold.

[0018] In addition, in a second aspect of the embodiments of the present application, a heat pump system is provided. The heat pump system includes a compressor, a heat exchanger, a gas-liquid separator, and the above-mentioned electrical box. The inner arc surface of the electrical box is completely attached to the cylindrical surface of the outer shell of the gas-liquid separator. The compressor, the heat exchanger, and the gas-liquid separator are connected together through a circulation pipeline with a plurality of control valves. The electrical box is electrically connected to the plurality of control valves to control the operation of the plurality of control valves, so that the refrigerant can circulate between the compressor, the heat exchanger, and the gas-liquid separator to achieve the temperature adjustment function of the heat pump system.

[0019] For the electrical box and the heat pump system provided by the technical solution of the present application, the electrical box includes a metal outer shell and electrical components installed inside the metal outer shell. A metal heat dissipation block protrudes from the outer surface of the side of the metal outer shell adjacent to the electrical components. The surface of the side of the metal heat dissipation block away from the metal outer shell is an inner arc surface, and the inner arc surface is attached to the cylindrical surface of the outer shell of the gas-liquid separator of the heat pump system. In this way, through the above structural arrangement, the electrical box and the gas-liquid separator of the heat pump system can be tightly attached and connected. Furthermore, when the electrical components of the electrical box generate heat, through the heat conduction of the metal outer shell and the metal heat dissipation block of the electrical box in sequence, these heats can be efficiently transferred to the gas-liquid separator, so as to effectively dissipate the heat of the electrical box while enabling the heat of the electrical box to be reused by the heat pump system through the gas-liquid separator of the heat pump system, increasing the energy efficiency of the heat pump system. At the same time, since the metal heat dissipation block contacts the cylindrical surface of the outer shell of the gas-liquid separator through the inner arc surface, compared with other forms of contact, its contact area is larger, and the heat on the metal heat dissipation block can be transferred to the gas-liquid separator more efficiently. It can be seen that the technical solution can effectively improve the technical problem that the existing heat pump system simply takes the heat of the electrical box to the external environment when dissipating the heat of the electrical box, and cannot reasonably utilize the heat generated by the electrical box, resulting in the waste of these heats. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0021] Figure 1 It is a schematic structural diagram of the electrical box according to the embodiment of the present application;

[0022] Figure 2 is Figure 1 a schematic structural diagram of the installation state of the electrical box shown;

[0023] Figure 3 is Figure 1 a schematic exploded view of the electrical box shown

[0024] Figure 4 is a schematic partial structure view of the heat pump system according to an embodiment of the present application

[0025] Explanation of reference numerals in the drawings:

[0026] 1. Heat pump system; 100. Electrical box; 110. Metal housing; 111. Metal lower cover; 1111. Installation groove; 112. Metal upper cover; 113. First heat dissipation rib; 114. Second heat dissipation rib; 115. Support feet; 120. Electrical components; 130. Metal heat sink; 131. Inner arc surface; 140. Sealing rubber ring; 150. Waterproof breathable valve; 160. Waterproof aerial pluggable connector; 171. Wire passing hole; 172. Waterproof wire passing sheath; 180. Cooling fan; 190. Temperature control module; 200. Gas-liquid separator; 300. Compressor; 400. Heat exchanger; 500. Circulation pipeline; 600. Control valve

[0027] The realization of the purpose, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly

[0030] In addition, the descriptions involving "first", "second", etc. in the present application are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application

[0031] In one embodiment, as Figures 1 to 4 shown, an electrical box 100 is provided in an embodiment of the present application. The electrical box 100 includes a metal housing 110 and electrical components 120 installed inside the metal housing 110. A metal heat sink 130 protrudes from an outer surface of the metal housing 110 adjacent to the electrical components 120. A surface of the metal heat sink 130 away from the metal housing 110 is an inner arc surface 131, and the inner arc surface 131 is disposed in contact with a cylindrical surface of a housing of the gas-liquid separator 200 of the heat pump system 1.

[0032] It can be understood that the electrical box 100 mentioned in the embodiment of the present application is mainly applied in the heat pump system 1 to achieve centralized installation and electrical protection of the main electrical components 120 of the heat pump system 1. Therefore, the electrical components 120 may include electronic components such as a variable frequency drive board, a main control board, a fan speed regulation module, and a reactor required for the operation of the heat pump system 1, so as to achieve overall regulation and corresponding function control of the heat pump system 1 through the electrical components 120 in the electrical box 100. The above-mentioned metal housing 110 and metal heat sink 130 can specifically be made of metal materials with good heat conduction functions. Preferably, the metal housing 110 can specifically be an all-aluminum housing, and the metal heat sink 130 can specifically be an all-aluminum heat sink. In this way, while having good heat conduction functions, the overall structure of the electrical box 100 can be made lighter.

[0033] In addition, since the housing of the above-mentioned gas-liquid separator 200 of the heat pump system 1 is generally a cylindrical metal shell and also has good heat conduction functions, when the inner arc surface 131 of the metal heat sink 130 is disposed in contact with the cylindrical surface of the housing of the gas-liquid separator 200, that is, there is no gap or the gap is very small and negligible between the two, the heat of the metal heat sink 130 can be better transferred to the cylindrical surface of the housing of the gas-liquid separator 200, and then these heats can be transferred to the inside of the gas-liquid separator 200 through the good heat conduction performance of the cylindrical surface of the housing of the gas-liquid separator 200, so that these heats can be reused by the heat pump system 1.

[0034] In this way, through the above structural arrangement, the electrical box 100 can be closely attached to the gas-liquid separator 200 of the heat pump system 1. Furthermore, when the electrical components 120 in the electrical box 100 generate heat during operation, the heat can be efficiently transferred to the gas-liquid separator 200 through the heat conduction of the metal shell 110 and the metal heat sink 130 of the electrical box 100 in sequence. While effectively dissipating the heat of the electrical box 100, the heat of the electrical box 100 can be reused by the heat pump system 1 through the gas-liquid separator 200 of the heat pump system 1, increasing the energy efficiency of the heat pump system 1. At the same time, since the metal heat sink 130 contacts the outer cylindrical surface of the gas-liquid separator 200 through the inner arc surface 131, compared with other forms of contact, the contact area is larger, and the heat on the metal heat sink 130 can be transferred to the gas-liquid separator 200 more efficiently.

[0035] In some examples, such as Figures 1 to 3 shown, the radian of the inner arc surface 131 is the same as that of the outer cylindrical surface of the gas-liquid separator 200 of the heat pump system 1, so that the inner arc surface 131 can be arranged to completely fit the outer cylindrical surface of the gas-liquid separator 200 of the heat pump system 1. In this way, through the above structural arrangement, the connection between the inner arc surface 131 of the metal heat sink 130 and the outer cylindrical surface of the gas-liquid separator 200 can be made closer, ensuring more efficient heat conduction between the two.

[0036] In some examples, such as Figures 1 to 3 shown, a heat dissipation silicone grease gasket (not shown) is also attached to the inner arc surface 131 or heat dissipation silica gel (not shown) is coated, so that it can be arranged to completely fit the outer cylindrical surface of the gas-liquid separator 200 of the heat pump system 1 through the heat dissipation silicone grease gasket or heat dissipation silica gel. In this way, through the setting of the heat dissipation silicone grease gasket or heat dissipation silica gel, the connection between the inner arc surface 131 of the metal heat sink 130 and the outer cylindrical surface of the gas-liquid separator 200 can be made closer. At the same time, due to the good heat conduction performance of the heat dissipation silicone grease gasket or heat dissipation silica gel, the heat on the metal heat sink 130 can be transferred to the gas-liquid separator 200 more efficiently. Further, the thickness of the above heat dissipation silicone grease gasket or heat dissipation silica gel is preferably 1 mm to 5 mm. In this way, through this thickness setting, while ensuring that the inner arc surface 131 can better completely fit the outer cylindrical surface of the gas-liquid separator 200 of the heat pump system 1 through the heat dissipation silicone grease gasket or heat dissipation silica gel, the heat conduction efficiency between the two is higher.

[0037] In some examples, such as Figures 1 to 3As shown, the metal heat sink 130 and the metal housing 110 can specifically be integrally formed by a mold or firmly connected through a detachable connection structure or a welding structure. In this way, when the metal heat sink 130 and the metal housing 110 are integrally formed by a mold, the metal heat sink 130 can directly serve as a part of the metal housing 110. Then, when the heat generated by the electrical component 120 during operation is transferred to the metal housing 110, it can be completely transferred to the metal heat sink 130 without gaps, making the heat transfer between the two more efficient. At the same time, since the metal heat sink 130 is formed synchronously when the metal housing 110 is formed, the forming and installation steps of the metal heat sink 130 can be saved. When the metal heat sink 130 and the metal housing 110 are firmly connected through a welding structure, the metal heat sink 130 can be more firmly fastened to the metal housing 110 while ensuring efficient heat conduction between the two. When the metal heat sink 130 and the metal housing 110 are firmly connected through a detachable connection structure (such as screw fastening connection or snap connection), while ensuring efficient heat conduction between the two, it is convenient for users to better replace the metal heat sink 130 with a corresponding inner arc surface 131 according to the actual radian of the cylindrical surface of the housing of the gas-liquid separator 200 of the heat pump system 1.

[0038] In some examples, as Figures 1 to 3 shown, the metal housing 110 can specifically include a metal lower cover 111 with an installation groove 1111 and a metal upper cover 112. The electrical component 120 is installed in the installation groove 1111 and is disposed close to the groove wall of the installation groove 1111. A metal heat sink 130 protrudes from the surface of the metal lower cover 111 away from the installation groove 1111. The metal upper cover 112 covers the notch of the installation groove 1111 to seal the installation groove 1111 to form an installation cavity. In this way, through the above structural arrangement, the metal housing 110 is composed of a detachable metal lower cover 111 and a metal upper cover 112, so that the installation cavity of the metal housing 110 can be opened according to actual needs to facilitate the installation and maintenance of the electrical component 120 in the installation cavity. At the same time, by disposing the electrical component 120 close to the groove wall of the installation groove 1111 and the metal heat sink 130 protruding from the metal lower cover 111, the heat transfer distance between the electrical component 120 and the metal heat sink 130 is shorter, making the heat transfer between the two more efficient.

[0039] It can be understood that a flip-open structure design can be specifically adopted between the metal lower cover 111 and the metal upper cover 112. That is, hinges are provided on one side of the metal lower cover 111 and one side of the metal upper cover 112, so that one side of the metal upper cover 112 can rotate axially relative to one side of the metal lower cover 111 to realize the opening and closing of the metal upper cover 112. The other side of the metal lower cover 111 and the other side of the metal upper cover 112 are locked and fixed by screwing into the upper and lower cover threaded holes. In addition, to facilitate the electrical box 100 to present a rectangular standing style, support feet 115 are also provided on the outer peripheral wall of the metal lower cover 111 to support and stand up the electrical box 100. In the electrical component 120, the IPM module on the variable frequency drive board is the main heat source inside the electrical box 100, and the IPM module is closely attached to the bottom of the installation groove 1111 to better transfer heat to the metal heat sink 130.

[0040] In some examples, such as Figures 1 to 3 shown, several first heat dissipation ribs 113 protrude from the surface of the side of the metal upper cover 112 away from the metal lower cover 111. In this way, through the above structural settings, while effectively enhancing the structural strength of the metal upper cover 112, the heat dissipation area of the metal upper cover 112 is increased, so as to dissipate heat faster.

[0041] It can be understood that several first heat dissipation ribs 113 can be arranged in sub-regions on this side surface, and there are intervals between several first heat dissipation ribs 113 in adjacent regions. Some of the first heat dissipation ribs 113 extend along the length direction of the metal upper cover 112, and some of the first heat dissipation ribs 113 extend along the width direction of the metal upper cover 112. While effectively enhancing the heat dissipation area of the metal upper cover 112, the overall structural strength of the metal upper cover 112 is stronger and more aesthetic.

[0042] In some examples, such as Figures 1 to 3 shown, several second heat dissipation ribs 114 also protrude from the outer peripheral wall of the installation cavity. It can be understood that the outer peripheral wall of the installation cavity includes a part of the metal upper cover 112 and a part of the metal lower cover 111. In this way, through the above structural settings, while effectively enhancing the structural strength of the metal upper cover 112 and the metal lower cover 111, the heat dissipation areas of the metal upper cover 112 and the metal lower cover 111 are increased, so as to dissipate heat faster.

[0043] It can be understood that the materials of the above-mentioned first heat dissipation rib 113 and the above-mentioned second heat dissipation rib 114 can be the same as or different from the material of the metal shell 110. When they are the same as the material of the metal shell 110, they can be arranged in an integrated structure, that is, when the metal upper cover 112 or the metal lower cover 111 is integrally formed, a corresponding number of first heat dissipation ribs 113 or a corresponding number of second heat dissipation ribs 114 are integrally formed synchronously. When they are different from the material of the metal shell 110, they can be made of a material with a better thermal conductivity than the metal shell 110, so as to better increase the heat dissipation efficiency of the corresponding metal upper cover 112 and metal lower cover 111 by the first heat dissipation ribs 113 and the second heat dissipation ribs 114 without significantly increasing the overall cost of the electrical box 100 and without changing the structure of the metal shell 110 itself, thereby dissipating heat faster.

[0044] In some examples, such as Figures 1 to 3 As shown, a sealing rubber ring 140 is clamped at the connection between the metal upper cover 112 and the metal lower cover 111, and a waterproof breathable valve 150 communicating the inside and outside of the installation cavity is installed on the metal shell 110. In this way, through the structural setting of the sealing rubber ring 140, a better fitting and sealing effect can be achieved between the metal upper cover 112 and the metal lower cover 111. At the same time, in order to better balance the pressure difference inside and outside the sealed space of the sealed cavity and prevent the generation of deformation stress due to the existence of the internal and external pressure difference or the entry of condensed water due to the pressure difference, in this example, through the structural setting of the waterproof breathable valve 150 (the specific number can be preferably two), while better balancing the internal and external pressure difference of the sealed electrical box 100, it also has a certain heat dissipation and ventilation effect.

[0045] In some examples, such as Figures 1 to 3 As shown, at least one waterproof aerial plug-in connection seat 160 is installed on the metal shell 110, and the electrical component 120 is electrically connected to other electrical components located outside the metal shell 110 in the heat pump system Ⅰ through at least one waterproof aerial plug-in connection seat 160. In this way, through the above structural setting, while realizing the electrical connection between the electrical component 120 and other electrical components located outside the metal shell 110 in the heat pump system Ⅰ, the sealing and waterproof performance of the installation cavity inside the metal shell 110 can be ensured. Further, at least one wire passing hole 171 is also formed on the metal shell 110, and a waterproof wire passing sheath 172 is provided around each wire passing hole 171, so that when the electrical connection wire of the electrical component 120 is led out through the corresponding wire passing hole 171, an interference fit with the corresponding waterproof wire passing sheath 172 is used to achieve the corresponding waterproof protection.

[0046] It can be understood that in at least one waterproof aerial pluggable connector 160, it may include at least one waterproof aerial plug male terminal for high voltage electricity and at least one waterproof aerial plug male terminal for low voltage electricity. In this way, the wiring harness design can be carried out by referring to the wiring harness application solution for electric vehicles, so as to more quickly conduct the internal wiring of the electrical box 100 and the wiring from the load to the wiring harness female terminal, and can make the sealing performance and reliability of the electrical box 100 better. At the same time, the structural setting of at least one wire passing hole 171 is used to fix the waterproof wire passing sheath 172 and pass strong electric wires such as the compressor power cord and the filter board, without affecting the waterproof sealing performance of the installation cavity.

[0047] In some examples, such as Figures 1 to 3 shown, the electrical box 100 further includes at least one cooling fan 180, and at least one cooling fan 180 is respectively arranged in the installation groove 1111 to stir the internal air of the installation cavity in a closed state to make it flow quickly. In this way, through the above structural setting, the heat dissipation performance of the electrical box 100 can be further enhanced, so that the heat in the installation cavity can be quickly and efficiently transferred to the metal shell 110 to achieve effective heat dissipation of the electrical box 100.

[0048] It can be understood that in the electrical component 120, the components on the reactor, the fan speed regulation module and the variable frequency drive board also generate a large amount of heat. Therefore, a cooling fan 180 is installed near the reactor or near the variable frequency drive board to stir the internal air of the installation cavity in a closed state to make it flow quickly, so as to take away the heat more quickly. In addition, the main control board is fixed on the fan speed regulation module and the variable frequency drive board through long external thread studs, which can save the space of the electrical box 100 and make the wiring simpler.

[0049] In some examples, such as Figures 1 to 3As shown in the figure, the electrical box 100 includes a temperature sensor and a temperature control module 190 that are installed inside the metal housing 110. Among them, the temperature sensor is used to detect the internal temperature in the installation cavity and obtain the ambient temperature of the room where the electrical box 100 is located, and calculate the difference between the internal temperature and the ambient temperature. The temperature control module 190 includes a heating plate, which is used to start the heating plate to heat the installation cavity when the difference is less than the first preset threshold, and to turn off the heating plate to stop heating the installation cavity when the difference is greater than the second preset threshold. It can be understood that the above first preset threshold can be specifically 2°C to 3°C (preferably 2°C), and the above second preset threshold can be specifically 9°C to 11°C (preferably 10°C). Generally speaking, when the difference between the internal temperature and the ambient temperature mentioned above is less than 2°C to 3°C, condensate will be generated in the installation cavity of the electrical box because the internal temperature is too low, which will affect the normal service life of the circuit board and electrical components and even cause burnout. In this way, the internal temperature of the installation cavity of the electrical box 100 can be effectively controlled by the above temperature control module 190, which can avoid the phenomenon of condensate generated due to the internal overcooling of the electrical box 100, and at the same time has the advantages of energy conservation and environmental protection.

[0050] In one embodiment, as Figure 4 shown, the present application embodiment provides a heat pump system 1. The heat pump system 1 includes a compressor 300, a heat exchanger 400, a gas-liquid separator 200, and the electrical box 100 in the above embodiment. The inner arc surface 131 of the electrical box 100 is completely attached to the outer cylindrical surface of the housing of the gas-liquid separator 200. The compressor 300, the heat exchanger 400, and the gas-liquid separator 200 are connected together through a circulation pipeline 500 with multiple control valves 600. The electrical box 100 is electrically connected to the multiple control valves 600, so that by controlling the operation of the multiple control valves 600, the refrigerant can circulate between the compressor 300, the heat exchanger 400, and the gas-liquid separator 200 to realize the temperature adjustment function of the heat pump system 1.

[0051] It can be understood that the structure and function of the electrical box 100 in this embodiment are exactly the same as those of the electrical box 100 in the above embodiment, and will not be described in detail here.

[0052] In this way, in the process of the heat pump system 1 of the present application performing the temperature adjustment function, the heat generated by the electrical box 100 during its operation can be taken away by the gas-liquid separator 200 to effectively dissipate the heat of the electrical box 100. At the same time, the heat of the electrical box 100 is reused by the heat pump system 1 through the gas-liquid separator 200 of the heat pump system 1, increasing the energy efficiency of the heat pump system 1 and making the heat pump system 1 have stronger energy efficiency.

[0053] The above are only the preferred embodiments of the present application, which do not limit the patent scope of the present application. Any equivalent structural transformation made under the inventive concept of the present application by using the content of the specification and drawings of the present application, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. An electrical box, which is applied in a heat pump system, is characterized in that, The electrical box includes a metal housing and electrical components installed inside the metal housing. On the outer surface of one side of the metal housing adjacent to the electrical components, there is a convex metal heat sink. The surface of the metal heat sink away from the metal housing is an inner arc surface, and the inner arc surface is arranged in a fitting manner with the cylindrical surface of the housing of the gas-liquid separator of the heat pump system.

2. The electrical box according to claim 1, characterized in that, The radian of the inner arc surface is the same as that of the cylindrical surface of the housing of the gas-liquid separator of the heat pump system, so that the inner arc surface can be completely arranged in a fitting manner with the cylindrical surface of the housing of the gas-liquid separator of the heat pump system.

3. The electrical box according to claim 1, characterized in that, A heat-conducting silicone grease gasket is also attached to the inner arc surface or heat-conducting silicone rubber is coated thereon, so as to be completely arranged in a fitting manner with the cylindrical surface of the housing of the gas-liquid separator of the heat pump system through the heat-conducting silicone grease gasket or the heat-conducting silicone rubber.

4. The electrical box according to claim 1, characterized in that, The metal heat sink and the metal housing are integrally formed by a mold or are firmly connected through a detachable connection structure or a welding structure.

5. The electrical box according to any one of claims 1-4, characterized in that, The metal housing includes a metal lower cover with an installation groove and a metal upper cover. The electrical components are installed in the installation groove and are closely arranged against the groove wall of the installation groove. The metal heat sink protrudes from the surface of the metal lower cover away from the installation groove. The metal upper cover covers the notch of the installation groove to seal the installation groove to form an installation cavity.

6. The electrical box according to claim 5, characterized in that, On the surface of the metal upper cover away from the metal lower cover, there are a number of first heat dissipation ribs protruding; and / or, A number of second heat dissipation ribs protrude from the outer peripheral wall of the installation cavity.

7. The electrical box according to claim 5, wherein A sealing rubber ring is clamped at the connection between the metal upper cover and the metal lower cover, and a waterproof breathable valve communicating inside and outside the installation cavity is installed on the metal housing; and / or, At least one waterproof air-to-air plug connector is installed on the metal housing, and the electrical components are electrically connected to other electrical components located outside the metal housing in the heat pump system through the at least one waterproof air-to-air plug connector.

8. The electrical box according to claim 5, characterized in that, At least one wire passing hole is also opened on the metal housing, and a waterproof wire passing sheath is arranged around each wire passing hole. When the electrical connection wires of the electrical components are led out through the corresponding wire passing holes, an interference fit with the corresponding waterproof wire passing sheath is used to achieve corresponding waterproof protection.

9. The electrical box according to claim 5, wherein, The electrical box further includes at least one heat dissipation fan, and the at least one heat dissipation fan is respectively installed in the installation groove to stir the internal air in the installation cavity in a closed state to make it flow quickly.

10. The electrical box according to claim 5, characterized in that, The electrical box includes a temperature sensor and a temperature control module installed inside the metal housing. Among them, The temperature sensor is used to detect the internal temperature in the installation cavity and obtain the ambient temperature of the room where the electrical box is located, and calculate the difference between the internal temperature and the ambient temperature; The temperature control module includes a heating plate, which is used to start the heating plate to heat the installation cavity when the difference is less than a first preset threshold, and stop heating the installation cavity by shutting down the heating plate when the difference is greater than a second preset threshold.

11. A heat pump system, characterized in that, The heat pump system includes a compressor, a heat exchanger, a gas-liquid separator, and an electrical box as described in any one of claims 1-10. The inner arc surface of the electrical box is completely attached to the cylindrical surface of the outer shell of the gas-liquid separator. The compressor, the heat exchanger, and the gas-liquid separator are connected together through a circulation pipeline with multiple control valves. The electrical box is electrically connected to the multiple control valves to control the operation of the multiple control valves, so that the refrigerant can circulate between the compressor, the heat exchanger, and the gas-liquid separator to achieve the temperature regulation function of the heat pump system.

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