A frequency converter housing and compressor for a frequency converter

Abstract

The utility model provides a frequency converter housing and a compressor for a frequency converter compressor; it relates to the field of compressor accessories, and aims at the problem that the frequency converter housing has poor versatility due to different heat dissipation requirements of the current frequency converter components. The housing can adapt to two heat dissipation structures, and a built-in heat sink is matched with a main body housing through a heat dissipation housing to form a housing with built-in heat dissipation, and an external heat sink can also be directly matched with the main body housing to form a housing with external heat dissipation. The housing can be selected and installed as needed according to different heat dissipation conditions, thereby reducing design costs and manufacturing costs and improving installation efficiency.

Description

Technical Field

[0001] The utility model relates to the field of compressor accessories, in particular to a frequency converter housing for a frequency conversion compressor and a compressor. Background Art

[0002] The inverter is the control component when the variable frequency compressor is running. The inverter will generate a lot of heat during operation. If the inverter is equipped with a DC reactor or an AC reactor, and the inverter board is installed in the housing, the temperature of the inverter board will be high. The failure rate of the inverter increases exponentially with the increase of temperature, and the service life decreases exponentially with the increase of temperature. Therefore, the inverter needs to be equipped with a corresponding heat dissipation structure.

[0003] Different regional environments have different requirements for the heat dissipation conditions of inverter components. The application conditions of inverters in wide voltage areas are more severe, and the original heat dissipation method is difficult to meet the application requirements. A high-performance inverter with dynamic cooling function is disclosed in a Chinese patent (publication number: CN206506432U). It detects the temperature inside the inverter. When the temperature is too high, the driver drives the motor to operate and drive the fan blades to rotate to achieve the cooling effect. It uses a fan to achieve active heat dissipation of the inverter, which requires additional layout space outside the inverter and increases the cost. For inverters with smaller space and lower cost requirements, active heat dissipation is not applicable. When a passive heat dissipation structure is used for the inverter, different voltage regions have different heat dissipation requirements for inverter components, and passive heat dissipation structures need to be designed separately, resulting in poor versatility of the inverter housing, affecting installation efficiency, and high manufacturing costs. Utility Model Content

[0004] The purpose of the utility model is to provide a frequency converter housing and a compressor for a frequency converter compressor in view of the defects in the prior art. The housing can adapt to two heat dissipation structures. The built-in heat sink is matched with the main housing through the heat dissipation housing to form a housing with built-in heat dissipation. The external heat sink can also be directly matched with the main housing to form a housing with external heat dissipation. The housing can be selected and installed as needed according to different heat dissipation conditions, thereby reducing design costs and manufacturing costs and improving installation efficiency.

[0005] The first purpose of the utility model is to provide a frequency converter housing for a frequency conversion compressor, which adopts the following technical solutions:

[0006] It comprises a main body shell, a cavity with an opening on one side is formed inside the main body shell, and the opening of the cavity is sealed with a heat dissipation shell or an external heat sink; wherein,

[0007] A support is provided on one side of the heat dissipation shell facing the cavity, and the support passes through a preset hole on the built-in heat dissipation fin. One side of the built-in heat dissipation fin fits the heat dissipation shell, and the other side is provided with a convex surface facing the cavity. The heat dissipation shell is connected to the main shell;

[0008] A convex surface is provided on one side of the external heat sink facing the cavity, and the external heat sink is connected to the main body shell.

[0009] Furthermore, a buckle pillar is provided on the side of the heat dissipation shell facing the cavity, the buckle pillar is spaced apart from the pillar, and the buckle pillar is engaged with an edge of one side of the built-in heat sink to fix the built-in heat sink to the heat dissipation shell.

[0010] Furthermore, a buckle is provided on one side of the opening of the main shell, one side of the heat dissipation shell cooperates with the buckle, and the other side is connected to the main shell by screws.

[0011] Furthermore, a support column is connected to the side of the external heat sink facing the cavity, and the support column and the inside of the main shell form a structure to constrain the position of the frequency converter board in the cavity. A buckle is provided on one side of the opening of the main shell, and one side of the external heat sink cooperates with the buckle, and the other side is connected to the main shell by screws.

[0012] Furthermore, it also includes a side shell, and a groove body is provided on the non-open side of the main shell. The side shell cooperates with the groove body and is connected by pre-installed buckles and pre-installed port snap-fitting.

[0013] Furthermore, a wire outlet is provided on the side shell, and the groove body forms a wire harness outlet at a position corresponding to the wire outlet, and the wire harness outlet matches with the wire outlet to form a channel for the wire harness to pass through.

[0014] Furthermore, a wire harness outlet buckle is provided on the wire harness outlet, a reinforcing rib is provided in the side shell, a screw hole support is provided in the slot of the main shell, and the side shell is fixed to the main shell by connecting the screw hole support with screws.

[0015] Furthermore, a plurality of positioning posts are provided on the inner wall of the cavity, and the positioning posts protrude from the inner wall of the cavity.

[0016] Furthermore, an output line magnetic ring fixing structure is installed outside the main body shell.

[0017] The second object of the utility model is to provide a compressor, using the inverter housing for the variable frequency compressor as described in the first object.

[0018] Compared with the prior art, the utility model has the following advantages and positive effects:

[0019] (1) In view of the problem that the inverter housing has poor versatility due to different heat dissipation requirements of inverter components, the housing can be adapted to two heat dissipation structures. The built-in heat sink is matched with the main housing through the heat dissipation housing to form a housing with built-in heat dissipation. The external heat sink can also be directly matched with the main housing to form a housing with external heat dissipation. The housing can be selected and installed as needed according to different heat dissipation conditions, thereby reducing design costs and manufacturing costs and improving installation efficiency.

[0020] (2) The main shell adopts a compatible solution. The heat sink on the inverter board can be exposed externally, which can achieve good heat dissipation effect and is suitable for wide voltage areas; or the heat sink on the inverter board can be built-in, which can meet normal heat dissipation needs and has cost advantages. It is suitable for other areas except wide voltage areas. The structure of the main shell and the side shell is kept fixed, thereby reducing design costs and manufacturing costs and improving installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0022] Figure 1 It is a schematic diagram of the inverter housing for the variable frequency compressor in Examples 1 and 2 of the utility model using a built-in heat sink.

[0023] Figure 2 It is a schematic diagram of an inverter housing for a variable frequency compressor in embodiments 1 and 2 of the utility model using an external heat sink.

[0024] Figure 3 It is an exploded schematic diagram of the inverter housing for the variable frequency compressor in Examples 1 and 2 of the utility model using a built-in heat sink.

[0025] Figure 4 It is an exploded schematic diagram of the inverter housing for the variable frequency compressor in Examples 1 and 2 of the utility model using an external heat sink.

[0026] Figure 5 It is a schematic diagram of the main body shell in Examples 1 and 2 of the present utility model.

[0027] Figure 6 It is a schematic diagram of the internal structure of the main body shell in Examples 1 and 2 of the utility model.

[0028] Figure 7 It is a schematic diagram of the interior of the side shell in Examples 1 and 2 of the present invention.

[0029] Figure 8 It is a schematic diagram of the heat dissipation housing in Examples 1 and 2 of the utility model.

[0030] Fig. 9 Schematic diagram of the built-in heat sink in Examples 1 and 2 of the utility model.

[0031] Fig.10 Schematic diagram of the external heat sink in Examples 1 and 2 of the utility model.

[0032] In the figure, 1. main shell, 2. side shell, 3. heat dissipation shell, 4. built-in heat sink, 5. external heat sink, 6. support column, 101. output line magnetic ring fixing structure, 102. bracket matching structure, 103. bracket fixing structure, 104. wire harness outlet, 105. wire harness outlet buckle, 106. pre-installed buckle, 107. screw hole pillar, 108. buckle, 109. screw hole, 110. water guide groove, 111. positioning column, 201. wire outlet, 202. pre-installed port, 203. reinforcement rib, 204. screw hole, 301. screw hole, 302. pillar, 303. pillar with buckle, 401. hole position, 402. raised surface, 501. screw hole, 502. screw hole, 503. raised surface. DETAILED DESCRIPTION

[0033] Example 1

[0034] In a typical implementation of the present invention, Figure 1-Figure 10 As shown, a frequency converter housing for a frequency converter compressor is proposed.

[0035] See also Figure 1 and Figure 2 The inverter housing for the variable frequency compressor has two structural forms according to different usage scenarios. The first structure consists of a main shell 1, a side shell 2, a heat dissipation shell 3 and a built-in heat sink 4. Figure 3 The second type consists of a main housing 1, a side housing 2, an external heat sink 5, and a support column 6. Figure 4 shown.

[0036] Domestic and European standard inverter boards have low heat dissipation requirements and use built-in heat sinks 4, such as Figure 1 As shown; the wide voltage inverter board has a high demand for heat dissipation, and an external heat sink 5 is used, such as Figure 2 Among them, the main shell 1 and the side shell 2 are used as a common structure, and the external heat sink 5, the internal heat sink 4 and the heat sink shell 3 are used as detachable and replaceable parts, which can be installed according to needs to meet different heat dissipation requirements.

[0037] like Figure 5As shown, a cavity with an opening on one side is formed inside the main shell 1, and the opening of the cavity is sealed with the heat dissipation shell 3 or the external heat sink 5. The main shell 1 is provided with an output line magnetic ring fixing structure 101, which is used to clamp the output line magnetic ring to prevent it from touching the frequency conversion board components; it is provided with a bracket matching structure 102 for matching with the relay bracket; it is provided with a bracket fixing structure 103 for screw fixing the relay bracket; it is provided with an inverter wire harness outlet 104, which is divided into two slots for outlet, fixing the inverter outlet position; it is provided with two wire harness outlet buckles 105, located at the two slots for outlet, for pre-fixing the wire harness before the side shell 2 is installed to prevent the wire harness from escaping from the outlet slot; it is provided with a pre-installed buckle 106, which is used for pre-installation and fixing before screw fixing with the side shell 2, and cooperates to position the side shell 2 and the main shell 1.

[0038] In addition, the main shell 1 is provided with a screw hole support 107 that cooperates with the side shell 2 and is used to cooperate with the screw. The screw passes through the preset screw hole 204 on the side shell 2 and cooperates with the screw hole on the screw hole support 107 to achieve the connection between the main shell 1 and the side shell 2.

[0039] The main housing 1 is provided with two buckles 108 and two screw holes 109 for clamping and fixing the heat dissipation housing 3 or the external heat sink 5 .

[0040] Specifically, when the heat dissipation housing 3 is installed on the main housing 1, a buckle 108 is provided on one side of the opening of the main housing 1, and a screw hole 109 is provided on the other side. One side of the heat dissipation housing 3 cooperates with the buckle 108, and the other side is connected to the screw hole 109 of the main housing 1 by screws.

[0041] When installing the external heat sink 5 on the main shell 1, a buckle 108 is provided on one side of the opening of the main shell 1, and a screw hole 109 is provided on the other side. One side of the external heat sink 5 cooperates with the buckle 108, and the other side is connected to the screw hole 109 of the main shell 1 by screws.

[0042] In addition, if Figure 6 As shown, the main housing 1 is also provided with a water guide groove 110, which is used to guide water that penetrates into the inverter housing to prevent components from failing due to water ingress. A plurality of positioning posts 111 are provided on the inner wall of the cavity, and the positioning posts protrude from the inner wall of the cavity. In this embodiment, four positioning posts 111 are provided on the inner wall of the cavity, which are used to directly contact and fix with the surface of the inverter board to prevent the inverter board from shaking and causing noise and other adverse effects.

[0043] like Figure 7As shown, a slot is provided on the non-opening side of the main housing 1, and the side housing 2 cooperates with the slot and is connected by pre-installed buckles and pre-installed ports. The side housing 2 is installed with the screw hole support 107 of the main housing 1 through the screw hole 204; the side housing 2 is provided with a wire outlet 201, which is used to fix the wire outlet position, and the slot corresponds to the position of the wire outlet 201 to form a wire harness outlet 104, and the wire harness outlet 104 and the wire outlet 201 match to form a channel for the wire harness to pass through; the side housing 2 has a pre-installed port 202, which cooperates with the pre-installed buckle 106 and is used for pre-installation and fixing with the main housing 1 before screwing; the side housing 2 is provided with a reinforcing rib 203, which is used to strengthen the structural surface strength of the side housing 2.

[0044] like Figure 8 As shown, a support 302 is provided on the side of the heat dissipation housing 3 facing the cavity, and the support 302 passes through a preset hole on the built-in heat sink 4. One side of the built-in heat sink 4 fits the heat dissipation housing 3, and the other side is provided with a convex surface facing the cavity, and the heat dissipation housing 3 is connected to the main housing 1. When the heat dissipation housing 3 is connected to the main housing 1, the heat dissipation housing 3 is installed through the screw hole 301 and the screw hole 109 of the main housing 1, and the synchronous buckle 108 assists in fixing. A support 303 with a buckle is also provided on the side of the heat dissipation housing 3 facing the cavity, and the support 303 with a buckle is spaced apart from the support 302, and the support 303 with a buckle is engaged with the edge of one side of the built-in heat sink 4, so that the built-in heat sink 4 is fixed to the heat dissipation housing 3.

[0045] Specifically, the heat dissipation shell 3 is provided with two pillars 302 and two pillars with buckles 303, which are used to support the frequency conversion board to ensure a safe distance between the bottom surface of the frequency conversion board and the heat sink, and at the same time serve as positioning pillars for the built-in heat sink 4. The pillars 302 are clamped together with the holes 401 of the built-in heat sink 4, and the buckle structure of the buckle pillars 303 clamps the edge of the built-in heat sink 4 to ensure that it is installed in place.

[0046] like Fig. 9 As shown, the built-in heat sink 4 is clamped and positioned with the support 302 through the hole 401; the built-in heat sink 4 forms a convex surface 402, which supports the thermal conductive pad to contact the heat dissipation component IGBT on the back of the inverter board to ensure sufficient heat dissipation.

[0047] like Fig.10 As shown, the external heat sink 5 is installed with the screw hole 109 of the main housing 1 through the screw hole 501, and the synchronous buckle 108 assists in fixing; there are 4 screw holes 502 on it, which are respectively connected to the four support columns 6, so as to support the frequency converter board and ensure that a safe distance is formed between the bottom surface of the frequency converter board and the external heat sink 5; a raised surface 503 is provided on the external heat sink 5, and its function is to support the thermal conductive pad to contact the heat dissipation component IGBT on the back of the frequency converter board to ensure sufficient heat dissipation.

[0048] The opening of the cavity is sealed with the heat dissipation shell 3 or the external heat sink 5. When the opening of the cavity is sealed with the heat dissipation shell 3, the heat dissipation shell 3 and the main shell 1 are assembled by fixing the buckles 108 and screws, the side shell 2 and the main shell 1 are assembled by pre-installed buckles 106 and screws, and the heat dissipation shell 3 and the built-in heat sink 4 are assembled by fixing the buckles and spacing, which ensures the convenience of installation while increasing the stability of the structure.

[0049] The inverter board in the cavity is fixed by directly contacting the upper surface of the inverter board through the four positioning columns 111 of the main shell 1, and the pillars 302 of the heat dissipation shell 3 and the buckle pillars 303 are directly contacting and supporting the lower surface of the inverter board, so that there is no space for the PCB board to move in the vertical direction; the inverter board inside the cavity is matched with the structural spacing on the four sides of the main shell 1, so that there is no space for the PCB board to move in the horizontal direction, thereby ensuring the stability of the structure.

[0050] The opening of the cavity is sealed with the heat dissipation shell 3 or the external heat sink 5. When the opening of the cavity is sealed with the external heat sink 5, the external heat sink 5 is assembled with the main shell 1 by means of fixing buckles 108 and screws, the side shell 2 is assembled with the main shell 1 by means of pre-installed buckles 106 and screws, and the external heat sink 5 is assembled with the support column 66 by means of bolt connection, which ensures the convenience of installation while increasing the stability of the structure.

[0051] The inverter board inside the inverter housing is fixed by directly contacting the upper surface of the inverter board through the four pillars 111 of the main housing 1, and the support column 66 is directly contacting and supporting the lower surface of the inverter board, so that there is no space for the PCB board to move in the vertical direction; the inverter board inside the inverter housing is matched with the structural spacing on the four sides of the main housing 1, so that there is no space for the PCB board to move in the horizontal direction, thereby ensuring the stability of the structure.

[0052] Example 2

[0053] In another typical embodiment of the present invention, Figure 1-Figure 10 As shown, a compressor is proposed.

[0054] The compressor is installed with a frequency converter housing for a frequency converter compressor as in Example 1, and the frequency converter components are installed in a cavity formed by the frequency converter housing for a frequency converter compressor.

[0055] Domestic and European standard inverter boards have low heat dissipation requirements and use built-in heat sinks 4, such as Figure 1 As shown; the wide voltage inverter board has a high demand for heat dissipation, and an external heat sink 5 is used, such as Figure 2Among them, the main shell 1 and the side shell 2 are used as a common structure, and the external heat sink 5, the internal heat sink 4 and the heat sink shell 3 are used as detachable and replaceable parts, which can be installed according to needs to meet different heat dissipation requirements.

[0056] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A frequency converter housing for a frequency converter compressor, characterized in that: It comprises a main body shell, a cavity with an opening on one side is formed inside the main body shell, and the opening of the cavity is sealed with a heat dissipation shell or an external heat sink; wherein, A support is provided on one side of the heat dissipation shell facing the cavity, and the support passes through a preset hole on the built-in heat dissipation fin. One side of the built-in heat dissipation fin fits the heat dissipation shell, and the other side is provided with a convex surface facing the cavity. The heat dissipation shell is connected to the main shell; A convex surface is provided on one side of the external heat sink facing the cavity, and the external heat sink is connected to the main body shell.

2. The inverter housing for the variable frequency compressor according to claim 1, characterized in that: The side of the heat dissipation shell facing the cavity is also provided with a buckle pillar, which is spaced apart from the pillars and is engaged with an edge of one side of the built-in heat sink to fix the built-in heat sink to the heat dissipation shell.

3. The inverter housing for the variable frequency compressor according to claim 2, characterized in that: A buckle is provided on one side of the opening of the main shell, one side of the heat dissipation shell cooperates with the buckle, and the other side is connected to the main shell by screws.

4. The inverter housing for the variable frequency compressor according to claim 1, characterized in that: The external heat sink is connected to a support column on the side facing the cavity, and the support column and the inside of the main shell form a structure that constrains the position of the frequency converter board in the cavity. A buckle is provided on one side of the opening of the main shell, and one side of the external heat sink cooperates with the buckle, and the other side is connected to the main shell by screws.

5. The inverter housing for the variable frequency compressor according to claim 1, characterized in that: It also includes a side shell, and a groove body is provided on the non-opening side of the main shell. The side shell cooperates with the groove body and is connected by pre-installed buckles and pre-installed port snap-fits.

6. The inverter housing for the variable frequency compressor according to claim 5, characterized in that: The side shell is provided with a wire outlet, and the groove body forms a wire harness outlet at a position corresponding to the wire outlet. The wire harness outlet and the wire outlet match to form a channel for the wire harness to pass through.

7. The inverter housing for the variable frequency compressor according to claim 6, characterized in that: The harness outlet is provided with a harness outlet buckle, a side shell is provided with a reinforcing rib, a main shell is provided with a screw hole support in the slot, and the side shell is fixed to the main shell by connecting the screw hole support with screws.

8. The inverter housing for the variable frequency compressor according to claim 1, characterized in that: A plurality of positioning posts are arranged on the inner wall of the cavity, and the positioning posts protrude from the inner wall of the cavity.

9. The inverter housing for the variable frequency compressor according to claim 1, characterized in that: An output line magnetic ring fixing structure is installed outside the main body shell.

10. A compressor, characterized in that: Utilize the inverter housing for the variable frequency compressor as described in any one of claims 1 to 9.

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