Frequency conversion liquid cooling electric cabinet of air source heat pump

Abstract

The utility model relates to an air source heat pump frequency conversion liquid cooling electric cabinet which comprises an electric cabinet body and at least one group of electrical element assemblies, and the electric cabinet body comprises an electric control box, an electric control door and an electric control top cover. The electric control box comprises a lower cover plate, a rear cover plate, a left side cover plate and a right side cover plate which are integrally formed; each group of electrical element assembly comprises a variable frequency driving module, a filtering plate and an electric reactor; the variable frequency driving module is fixed on the rear cover plate; the rear cover plate is provided with at least one assembly hole used for installing the variable frequency driving module, the variable frequency driving module comprises an assembly plate and a driving plate installed on the assembly plate, the driving plate is provided with a plurality of electric appliance elements, the assembly plate is fixed to the rear cover plate and covers the assembly hole in a sealing mode, and a liquid cooling block is fixedly arranged on the back side of the assembly plate. The liquid cooling block is matched with the assembly hole and extends out of the back side of the rear cover plate, a plurality of liquid cooling channels are constructed on the liquid cooling block in a penetrating mode, a liquid cooling pipe is arranged on the liquid cooling channels in a penetrating mode, and the two ends of the liquid cooling pipe communicate with a pipeline of the heat pump unit.

Description

Technical Field

[0001] The utility model relates to the technical field of electric control boxes, in particular to an air source heat pump variable frequency liquid cooling electric control box. Background Art

[0002] With the development of the times and the advancement of science and technology, air source heat pumps, as a high-tech and green heating and cooling technology, can reduce the company's heating and cooling costs, while being simple and convenient to maintain. At present, many airports, schools, and large shopping malls are equipped with a large number of air source heat pump units for cooling and heating. Among them, the electrical control hardware facilities of the air source variable frequency heat pump units have added a large amount of driving hardware compared to the traditional fixed frequency units. The electrical components in the electrical control box will continue to generate a large amount of heat when working. If the heat cannot be removed in time, it will cause damage to the electrical components. The current electrical control box dissipates heat through natural cooling, which takes a long time and has limited heat dissipation effect. Summary of the invention

[0003] In order to solve the above problems, the purpose of the utility model is to provide an air source heat pump variable frequency liquid-cooled electric control box, which can conduct heat from electrical components by heat conduction, with fast heat dissipation and high efficiency.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] An air source heat pump variable frequency liquid cooling electric control box, comprising an electric control box body and at least one group of electrical component components arranged on the electric control box body, the electric control box body comprising an electric control box, an electric control door and an electric control top cover; the electric control box comprises an integrally formed lower cover plate, a rear cover plate, a left cover plate and a right cover plate; the electric control top cover is arranged at the upper end of the electric control box and is fixedly connected to the upper ends of the left cover plate and the right cover plate; the electric control door is arranged relative to the rear cover plate and is fixedly connected to the side ends of the left cover plate and the right cover plate;

[0006] Each group of electrical component assemblies includes a variable frequency drive module, a filter board and a reactor; the variable frequency drive module is fixed on the rear cover plate, the filter board is fixed on the left and right cover plates, and the reactor is fixed on the left and right cover plates corresponding to the filter board;

[0007] At least one assembly hole for installing a variable frequency drive module is provided on the rear cover plate, and the variable frequency drive module includes an assembly plate and a drive plate installed on the assembly plate, and a plurality of electrical components are arranged on the drive plate. The assembly plate is fixed to the rear cover plate and sealed on the assembly hole, and is characterized in that: a liquid cooling block is fixedly provided on the back side of the assembly plate, and the liquid cooling block is adapted to the assembly hole and extends out of the back side of the rear cover plate, and a plurality of liquid cooling channels are constructed through the liquid cooling block, and liquid cooling pipes are passed through the plurality of liquid cooling channels, and both ends of the liquid cooling pipes are connected to the pipelines of the heat pump unit.

[0008] Preferably, a waterproof coating is applied between the liquid cooling block and the assembly hole.

[0009] Preferably, the upper ends of the left cover plate and the right cover plate extend out of the rear cover plate, and a gap is formed between the electric control top cover, the rear cover plate and the electric control door; an electric control auxiliary top plate is fixedly provided between the upper parts of the left cover plate and the right cover plate, and the electric control auxiliary top plate covers between the rear cover plate and the electric control door and forms a heat dissipation channel communicating with the gap between the electric control top cover; a plurality of rectangular heat dissipation holes are provided on the auxiliary top plate.

[0010] Preferably, a plurality of top cover support frames are supported and fixed between the electric control auxiliary top plate and the electric control top cover.

[0011] Preferably, a plurality of first blinds are regularly opened on the electric-controlled door, and a plurality of waist-shaped screw holes are symmetrically provided at both ends of the electric-controlled door, and screws are screwed into the waist-shaped screw holes to fix the left cover plate and the right cover plate; a plurality of second blinds are regularly opened on the lower cover plate, and a plurality of fixing holes are symmetrically opened on both sides of the plurality of second blinds on the lower cover plate.

[0012] Preferably, the left cover plate and the right cover plate are symmetrically provided with a plurality of wire holes, and a waterproof wire coil is provided on the wire holes; a plurality of third blinds are provided on the rear cover plate, and a plurality of first strip-shaped heat dissipation holes are regularly provided on the rear cover plate above the plurality of third blinds.

[0013] Preferably, a grounding bracket is welded on the rear cover below the mounting hole, a filter support plate is fixedly provided on the left cover or the right cover, a plurality of nuts are welded on the filter support plate, and the filter plate is fixedly connected to the filter support plate by screwing screws into the nuts.

[0014] Preferably, an enclosing cover is fixedly provided on the left cover plate or the right cover plate on the outside of the reactor, a plurality of fourth louvers are provided at the outer end of the enclosing cover, and a plurality of second strip-shaped heat dissipation holes are provided at the bottom of the enclosing cover.

[0015] Preferably, the edge of the electric control top cover extends out of the upper ends of the electric control box and the electric control door to form an end edge, and the end edge extends downward to form a cover edge.

[0016] The utility model adopts the above technical scheme, by arranging a liquid cooling block on the back of the variable frequency drive module, fixing it with bolts to ensure strength, applying a waterproof coating on the edge before assembly to ensure the overall waterproof performance of the electric control box body, opening a plurality of liquid cooling channels on the liquid cooling block, and passing liquid cooling pipes through the plurality of liquid cooling channels, liquid low-temperature refrigerant flows into the liquid cooling pipes, greatly reducing the temperature on the back of the drive module, thereby allowing the heat on the electrical components to be conducted from high to low toward one side of the liquid cooling block.

[0017] It should be noted here that a liquid cooling tube can be passed through several liquid cooling channels for easy assembly, or a liquid cooling tube can be set on each liquid cooling channel, which has a relatively better heat dissipation effect and can be assembled according to needs.

[0018] One end of the liquid cooling tube is the liquid inlet, and the other end is the liquid outlet. The interface between the liquid inlet and the liquid outlet is expanded through a hot spinning process to facilitate brazing and welding with the pipelines of the internal system of the unit. The heat exchange cycle inside the unit continuously dissipates heat for the electrical components in the electrical control box.

[0019] In addition, the electric control box is made of sheet metal bending as a whole, has a simple structure, is easy to produce, is fixed with self-tapping screws as a whole, is detachable, reduces welding points, and improves the firmness of the box structure.

[0020] In addition, a large number of rectangular heat dissipation holes are added to the top of the auxiliary top plate of the electric control box to enhance the heat dissipation effect. Furthermore, the multiple first louvers, second louvers, third louvers, fourth louvers, first strip heat dissipation holes and second strip heat dissipation holes on the electric control box body all improve the overall heat dissipation effect of the electric control box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of an air source heat pump variable frequency liquid-cooled electric control box.

[0022] Figure 2 This is a three-dimensional structural schematic diagram of an air source heat pump variable frequency liquid-cooled electric control box from another perspective.

[0023] Figure 3 It is a schematic diagram of the assembly of the variable frequency drive module, liquid cooling block and liquid cooling pipe.

[0024] Figure 4 This is a schematic assembly diagram of the variable frequency drive module, liquid cooling block and liquid cooling tube from another perspective.

[0025] Figure 5 Schematic diagram of the three-dimensional structure of the liquid cooling block.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the electric control box.

[0027] Figure 7 It is a schematic diagram of the layout of the top cover support frame and the electronically controlled auxiliary top plate.

[0028] Figure 8 Schematic diagram of the internal structure of the electric control box.

[0029] Fig. 9 It is a schematic diagram of the three-dimensional structure of the electric control door. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] like Figures 1 to 9An air source heat pump variable frequency liquid cooling electric control box shown in the figure comprises an electric control box body and at least one group of electrical component assemblies arranged on the electric control box body, wherein the electric control box body comprises an electric control box 1, an electric control door 2 and an electric control top cover 3; the electric control box 1 comprises an integrally formed lower cover plate 4, a rear cover plate 5, a left cover plate 6 and a right cover plate 7; the electric control top cover 3 is arranged at the upper end of the electric control box 1 and is fixedly connected to the upper ends of the left cover plate 6 and the right cover plate 7; the electric control door 2 is arranged relative to the rear cover plate 5 and is fixedly connected to the side ends of the left cover plate 6 and the right cover plate 7;

[0036] Each group of electrical component assemblies includes a variable frequency drive module, a filter plate 8 and a reactor 9; the variable frequency drive module is fixed on the rear cover plate 5, the filter plate 8 is fixed on the left and right side cover plates, and the reactor 9 is fixed on the left and right side cover plates 7 corresponding to the filter plate 8;

[0037] At least one assembly hole 10 for installing a variable frequency drive module is provided on the rear cover plate 5. The variable frequency drive module includes an assembly plate 11 and a drive plate 12 installed on the assembly plate 11. The drive plate 12 is provided with a plurality of electrical components. The assembly plate 11 is fixed to the rear cover plate 5 and sealed on the assembly hole 10. A liquid cooling block 13 is fixed on the back side of the assembly plate 11. The liquid cooling block 13 is adapted to the assembly hole 10 and extends out of the back side of the rear cover plate 5. A plurality of liquid cooling channels 14 are constructed through the liquid cooling block 13. Liquid cooling pipes 15 are penetrated through the plurality of liquid cooling channels 14. Both ends of the liquid cooling pipes 15 are connected to the pipelines of the heat pump unit.

[0038] In the above technical solution, a liquid cooling block is arranged on the back of the variable frequency drive module, which is fixed with bolts to ensure strength, and a waterproof coating is applied to the edge before assembly to ensure the overall waterproof performance of the electric control box body. Several liquid cooling channels are opened on the liquid cooling block, and liquid cooling pipes are passed through the several liquid cooling channels. Liquid low-temperature refrigerant flows into the liquid cooling pipes, which greatly reduces the temperature on the back of the drive module, thereby allowing the heat on the electrical components to be transferred from high to low toward the liquid cooling block side.

[0039] It should be noted here that a liquid cooling tube can be passed through several liquid cooling channels for easy assembly, or a liquid cooling tube can be set on each liquid cooling channel, which has a relatively better heat dissipation effect and can be assembled according to needs.

[0040] One end of the liquid cooling tube is the liquid inlet, and the other end is the liquid outlet. The interface between the liquid inlet and the liquid outlet is expanded through a hot spinning process to facilitate brazing and welding with the pipelines of the internal system of the unit. The heat exchange cycle inside the unit continuously dissipates heat for the electrical components in the electrical control box.

[0041] In addition, the electric control box is made of sheet metal bending as a whole, has a simple structure, is easy to produce, is fixed with self-tapping screws as a whole, is detachable, reduces welding points, and improves the firmness of the box structure.

[0042] Furthermore, a waterproof coating is applied between the liquid cooling block 13 and the assembly hole 10. In this technical solution, the waterproof performance between the liquid cooling block and the electric control box is improved.

[0043] Furthermore, the upper ends of the left cover plate 6 and the right cover plate 7 extend out of the rear cover plate 5, and a gap is formed between the electric control top cover 3, the rear cover plate 5 and the electric control door 2. An electric control auxiliary top plate 16 is fixed between the upper parts of the left cover plate 6 and the right cover plate 7. The electric control auxiliary top plate 16 covers between the rear cover plate 5 and the electric control door 2 and forms a heat dissipation channel communicating with the gap between the electric control top cover 3; a plurality of rectangular heat dissipation holes 17 are provided on the auxiliary top plate. In this technical solution, a large number of rectangular heat dissipation holes are added to the top of the auxiliary top plate of the electric control box to enhance the heat dissipation effect.

[0044] Furthermore, a plurality of top cover support frames 18 are supported and fixed between the electric control auxiliary top plate 16 and the electric control top cover 3. In this technical solution, the electric control auxiliary top plate is fixed to both the electric control auxiliary top plate and the electric control top cover, which can improve the structural strength of both and play a better supporting role.

[0045] Furthermore, the electric control door 2 is provided with a plurality of first louvers 19 at regular intervals, and a plurality of waist-shaped screw holes 20 are symmetrically provided at both ends of the electric control door 2. Screws are screwed into the waist-shaped screw holes 20 to be fixedly connected with the left cover plate 6 and the right cover plate 7; the lower cover plate 4 is provided with a plurality of second louvers 21 at regular intervals, and the lower cover plate 4 is provided with a plurality of fixing holes symmetrically on both sides of the plurality of second louvers 21. In this technical solution, the provision of the plurality of first louvers and the second louvers improves the heat dissipation effect of the box.

[0046] Furthermore, the left cover plate 6 and the right cover plate 7 are symmetrically provided with a plurality of wire holes 22, and the wire holes 22 are provided with waterproof wire loops; the rear cover plate 5 is provided with a plurality of third louvers 23, and a plurality of first strip-shaped heat dissipation holes 24 are regularly provided above the plurality of third louvers 23 on the rear cover plate 5. In this technical solution, the plurality of third louvers and the first strip-shaped heat dissipation holes improve the heat dissipation effect of the box.

[0047] Furthermore, a grounding bracket 25 is welded on the rear cover plate 5 below the mounting hole, a filter support plate 26 is fixed on the left cover plate 6 or the right cover plate 7, a plurality of nuts are welded on the filter support plate 26, and the filter plate 8 is fixedly connected to the filter support plate 26 by screwing screws into the nuts. In this technical solution, the filter plate is heavy, and fixing it with a filter support plate can improve the fixing effect, while ensuring that the creepage distance and electrical clearance between various components are sufficient.

[0048] Furthermore, an enclosure 27 is fixedly provided on the left cover plate 6 or the right cover plate 7 on the outside of the reactor 9, a plurality of fourth louvers 28 are provided at the outer end of the enclosure 27, and a plurality of second strip-shaped heat dissipation holes 29 are provided at the bottom of the enclosure 27. In this technical solution, the arrangement of the plurality of fourth louvers and the second strip-shaped heat dissipation improves the heat dissipation at the reactor.

[0049] Furthermore, the edge of the electric control top cover 3 extends out of the upper ends of the electric control box 1 and the electric control door 2 to form an end edge, and the end edge extends downward to form a cover edge 30. In this technical solution, the formation of the cover edge can prevent rainwater from entering the inner side of the box.

[0050] In this specific embodiment, in order to solve the problem that the existing electric control box relies on its own structure to naturally cool and dissipate heat, but has a long heat dissipation time and limited heat dissipation effect, the above scheme fixes a liquid cooling block on the back side of the variable frequency drive module, and a liquid cooling pipe is passed through the liquid cooling block. Liquid low-temperature refrigerant flows into the liquid cooling pipe, which greatly reduces the temperature on the back side of the drive module, thereby allowing the heat on the electrical components to be transferred from high to low toward the liquid cooling block. Specifically, one end of the liquid cooling pipe is a liquid inlet, and the other end is a liquid outlet. The interface between the liquid inlet and the liquid outlet is expanded by a hot spinning process, which is convenient for brazing and welding with the pipelines of the internal system of the unit, and continuously dissipating heat for the electrical components in the electric control box through the internal heat exchange cycle of the unit.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does 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.

[0052] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. An air source heat pump variable frequency liquid cooling electric control box, comprising an electric control box body and at least one group of electrical component assemblies arranged on the electric control box body, wherein the electric control box body comprises an electric control box (1), an electric control door (2) and an electric control top cover (3); the electric control box (1) comprises an integrally formed lower cover plate (4), a rear cover plate (5), a left cover plate (6) and a right cover plate (7); the electric control top cover (3) is arranged at the upper end of the electric control box (1) and is fixedly connected to the upper ends of the left cover plate (6) and the right cover plate (7); the electric control door (2) is arranged relative to the rear cover plate (5) and is fixedly connected to the side ends of the left cover plate (6) and the right cover plate (7); Each group of electrical component assemblies comprises a variable frequency drive module, a filter plate (8) and a reactor (9); the variable frequency drive module is fixed on the rear cover plate (5), the filter plate (8) is fixed on the left and right side cover plates, and the reactor (9) is fixed on the left and right side cover plates (7) corresponding to the filter plate (8); The rear cover plate (5) is provided with at least one assembly hole (10) for mounting a variable frequency drive module, the variable frequency drive module comprises an assembly plate (11) and a drive plate (12) mounted on the assembly plate (11), a plurality of electrical components are arranged on the drive plate (12), the assembly plate (11) is fixed to the rear cover plate (5) and covers the assembly hole (10), and is characterized in that: A liquid cooling block (13) is fixedly provided on the back side of the assembly plate (11), the liquid cooling block (13) is adapted to the assembly hole (10) and extends out of the back side of the rear cover plate (5), a plurality of liquid cooling channels (14) are constructed through the liquid cooling block (13), a plurality of liquid cooling channels (14) are penetrated by liquid cooling pipes (15), and both ends of the liquid cooling pipes (15) are connected to the pipelines of the heat pump unit.

2. The air source heat pump variable frequency liquid cooling electric control box according to claim 1, characterized in that: A waterproof coating is applied between the liquid cooling block (13) and the assembly hole (10).

3. The air source heat pump variable frequency liquid cooling electric control box according to claim 1, characterized in that: The upper ends of the left cover plate (6) and the right cover plate (7) extend out of the rear cover plate (5), a gap is formed between the electric control top cover (3), the rear cover plate (5) and the electric control door (2), an electric control auxiliary top plate (16) is fixedly provided between the upper parts of the left cover plate (6) and the right cover plate (7), the electric control auxiliary top plate (16) covers between the rear cover plate (5) and the electric control door (2) and forms a heat dissipation channel communicating with the gap between the electric control top cover (3); a plurality of rectangular heat dissipation holes (17) are provided on the auxiliary top plate.

4. The air source heat pump variable frequency liquid cooling electric control box according to claim 3, characterized in that: A plurality of top cover support frames (18) are supported and fixedly disposed between the electric control auxiliary top plate (16) and the electric control top cover (3).

5. The air source heat pump variable frequency liquid cooling electric control box according to claim 3, characterized in that: The electric-controlled door (2) is provided with a plurality of first louvers (19) at regular intervals, and a plurality of waist-shaped screw holes (20) are symmetrically provided at both ends of the electric-controlled door (2), wherein screws are screwed into the waist-shaped screw holes (20) to be fixedly connected to the left cover plate (6) and the right cover plate (7); the lower cover plate (4) is provided with a plurality of second louvers (21) at regular intervals, and the lower cover plate (4) is provided with a plurality of fixing holes symmetrically provided on both sides of the plurality of second louvers (21).

6. The air source heat pump variable frequency liquid cooling electric control box according to claim 5, characterized in that: A plurality of wire holes (22) are symmetrically provided on the left cover plate (6) and the right cover plate (7), and a waterproof wire coil is provided on the wire holes (22); a plurality of third louvers (23) are provided on the rear cover plate (5), and a plurality of first strip-shaped heat dissipation holes (24) are regularly provided on the rear cover plate (5) above the plurality of third louvers (23).

7. The air source heat pump variable frequency liquid cooling electric control box according to claim 6, characterized in that: A grounding bracket (25) is welded to the rear cover plate (5) below the mounting hole, a filter support plate (26) is fixedly provided to the left cover plate (6) or the right cover plate (7), a plurality of nuts are welded to the filter support plate (26), and the filter plate (8) is fixedly connected to the filter support plate (26) by screwing screws into the nuts.

8. The air source heat pump variable frequency liquid cooling electric control box according to claim 1, characterized in that: An enclosing cover (27) is fixedly provided on the left cover plate (6) or the right cover plate (7) on the outside of the reactor (9), a plurality of fourth louvers (28) are provided at the outer end of the enclosing cover (27), and a plurality of second strip-shaped heat dissipation holes (29) are provided at the bottom of the enclosing cover (27).

9. The air source heat pump variable frequency liquid cooling electric control box according to claim 1, characterized in that: The edge of the electric control top cover (3) extends out of the upper ends of the electric control box (1) and the electric control door (2) to form an end edge, and the end edge extends downward to form a cover edge (30).

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