Electric appliance module assembly of refrigeration compressor

Abstract

The utility model relates to an electric appliance module assembly of a refrigeration compressor, which comprises a plastic shell, and an overheat overload protector, a PTC (Positive Temperature Coefficient) starting relay and an operation capacitor are arranged in the plastic shell. The overheat and overload protector, the PTC starting relay and the operation capacitor are arranged in the same shell to form an electric appliance module assembly, and the electric appliance module assembly is externally provided with two groups of wiring terminals: one group of wiring terminals forms a power supply connecting end by an L insertion piece and an N insertion piece, and the other group of wiring terminals forms a compressor connecting end by a C insertion hole, an S insertion hole and an M insertion hole; one side of the overheat overload protector is connected with the L insertion sheet, and the other side is connected with the C insertion hole; after the PTC starting relay and the operation capacitor are connected in parallel, one side is connected with the N insertion piece and the M insertion hole, and the other side is connected with the S insertion hole. The electric appliance module assembly of the refrigeration compressor adopts the flame-retardant plastic shell, is small in size and simple in structure, reduces the product raw material cost and the installation labor cost, and is convenient to install and use.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration compressor starting, operation and motor protection technology, and in particular to an electrical module assembly for a refrigeration compressor. Background Technology

[0002] Currently, there are two existing solutions for starting, running, and protecting the motor of refrigeration compressors:

[0003] Method 1:

[0004] The refrigeration compressor is equipped with an overheat and overload protector, a PTC starting relay, and a running capacitor, all three components being independent. The overheat and overload protector is directly mounted on the C terminal of the refrigeration compressor. The PTC starting relay is mounted on the S and M terminals of the refrigeration compressor. The running capacitor is fixed to the refrigerator base and connected in parallel to the PTC starting relay via its lead cable. The L wire of the power cord is connected to the terminal of the overheat and overload protector, and the N wire is connected to the M terminal of the compressor. A plastic cover is then used to enclose all three components for waterproofing.

[0005] Method 2:

[0006] The refrigeration compressor is equipped with an overheat and overload protector, a PTC starting relay, and a running capacitor. The overheat and overload protector and the PTC starting relay are combined into a single unit – the integrated starting protector. This integrated starting protector is mounted on the refrigeration compressor and connected to the compressor's C, S, and M terminals. The running capacitor is fixed to the refrigerator's bottom plate and connected in parallel to the PTC starting relay terminals on the integrated starting protector via its lead cable. The L wire of the power supply is connected to the terminals on the overheat and overload protector, and the N wire is connected to the compressor's M terminal. A plastic electrical protective cover then encloses all three components for waterproofing.

[0007] Regardless of whether method one or method two is used, the following problems exist:

[0008] 1. Capacitors require a relatively long lead cable, resulting in higher material costs. Furthermore, they need to be fixedly installed on the bottom plate of the refrigerator or the outside of the appliance's plastic cover, leading to higher labor costs.

[0009] 2. The overheat and overload protector, PTC starting relay and running capacitor are separate components, resulting in high installation costs.

[0010] 3. The overheat and overload protector, PTC starting relay and running capacitor are separate components. After being installed on the compressor, a plastic electrical protective cover must be installed to cover the three components for waterproofing, which increases the material and installation costs. Utility Model Content

[0011] The purpose of this invention is to provide a refrigeration compressor electrical module assembly, mainly solving the problems of high material costs and high installation costs in the existing technology. Furthermore, it can achieve automated installation as needed, further reducing production and installation costs.

[0012] To achieve the above objectives, this utility model is implemented as follows.

[0013] An electrical module assembly for a refrigeration compressor includes a plastic housing containing an overheat and overload protector, a PTC starting relay, and a running capacitor. The overheat and overload protector, the PTC starting relay, and the running capacitor are housed within the same housing, forming an electrical module assembly with two sets of external terminals: one set consists of an L-pin and an N-pin for power connection, and the other set consists of a C-pin, an S-pin, and an M-pin for compressor connection. The overheat and overload protector is connected to the L-pin on one side and the C-pin on the other. The PTC starting relay and the running capacitor are connected in parallel, with one side connected to the N-pin and the M-pin, and the other side connected to the S-pin.

[0014] The refrigeration compressor electrical module assembly is characterized in that the plastic housing is provided with a plastic cover plate.

[0015] The refrigeration compressor electrical module assembly is characterized in that: the running capacitor is a cylindrical aluminum shell capacitor with terminal leads and an S2 safety protection level structure.

[0016] The refrigeration compressor electrical module assembly is characterized in that: the running capacitor is fixed in the capacitor cavity inside the plastic housing by a clip on the plastic housing and an annular groove on the running capacitor.

[0017] The refrigeration compressor electrical module assembly is characterized in that: the left and right sides of the plastic housing are provided with slots and strips for connecting and fixing to the compressor.

[0018] The refrigeration compressor electrical module assembly is characterized in that: the set of L and N terminal blocks are provided with protective covers.

[0019] With the above structure, the present invention has the following beneficial effects:

[0020] This utility model provides a refrigeration compressor electrical module assembly. This assembly uses a flame-retardant plastic shell, is small in size and simple in structure, reducing raw material costs and installation labor costs, and is convenient to install and use. It mainly solves the problems of high material costs and high installation costs in existing technologies. Furthermore, it can achieve automated installation as needed, further reducing production and installation costs. Attached Figure Description

[0021] Figure 1 This is the electrical schematic diagram of the refrigeration compressor electrical module assembly of this utility model.

[0022] Figure 2 This is a schematic diagram of Embodiment 1 of the present invention.

[0023] Figure 3 This is a schematic diagram of the housing base of Embodiment 1 of this utility model.

[0024] Figure 4 yes Figure 3 Front view.

[0025] Figure 5 yes Figure 3 Rear view.

[0026] Figure 6 This is an assembly diagram of Embodiment 1 of this utility model.

[0027] Figure 7 This is a schematic diagram of the installation of the PTC starting relay in Embodiment 1 of this utility model.

[0028] Figure 8 This is a schematic diagram of the PTC starting relay and running capacitor after installation (without cover plate) in Embodiment 1 of this utility model.

[0029] Figure 9 This is a schematic diagram of the overheat and overload protector after installation in Embodiment 1 of this utility model.

[0030] Figure 10 This is a schematic diagram of Embodiment 2 of this utility model.

[0031] Figure 11 This is a schematic diagram of Embodiment 3 (without cover plate) of this utility model.

[0032] Figure 12 This is a schematic diagram of Embodiment 4 (without cover plate) of this utility model.

[0033] In the diagram: 1-Plastic housing; 11-Housing base; 111-Overheat and overload protector cavity; 112-PTC starting relay cavity; 113-Running capacitor cavity; 114-Mounting clip; 115-Power connection terminal; 116-Compressor connection terminal; 12-Cover plate; 13-Inner cover plate; 14-Power cord protective cover; 2-Overheat and overload protector; 3-PTC starting relay; 4-Running capacitor; 5-S connecting piece; 6-M connecting piece. Detailed Implementation

[0034] Please see Figure 1 This utility model discloses an electrical schematic diagram of a refrigeration compressor electrical module assembly. The refrigeration compressor electrical module assembly comprises an overheat and overload protector 2, a PTC starting relay 3, and a running capacitor 4. Its key feature is that the overheat and overload protector 2, the PTC starting relay 3, and the running capacitor 4 are housed in the same housing to form an electrical module assembly, which has two sets of terminals: one set consists of an L-pin and an N-pin forming a power connection terminal 15, and the other set consists of a C-pin, an S-pin, and an M-pin forming a compressor connection terminal 16; the overheat and overload protector 2 is connected to the L-pin on one side and the C-pin on the other; the PTC starting relay 3 and the running capacitor 4 are connected in parallel, with one side connected to the N-pin and the M-pin, and the other side connected to the S-pin. In application, the C-pin, M-pin, and S-pin are inserted into the corresponding C-terminal, M-terminal, and S-terminal of the refrigeration compressor.

[0035] Please see Figures 1-9 This is a schematic diagram of the appearance of Embodiment 1 of the refrigeration compressor electrical module assembly of this utility model. The refrigeration compressor electrical module assembly consists of a plastic housing 1, an overheat and overload protector 2, a PTC starting relay 3, a running capacitor 4, an S connecting piece 5, an M connecting piece 6, and a C connecting piece.

[0036] The plastic housing 1 consists of a housing base 11, a cover plate 12, an inner cover plate 13, and a power cord protective cover 14. The housing base 11, cover plate 12, inner cover plate 13, and power cord protective cover 14 are all injection molded from high-performance flame-retardant plastic. The housing base 11 is equipped with an overheat / overload protector cavity 111, a PTC starting relay cavity 112, a running capacitor cavity 113, a mounting clip 114, a power connection terminal 115, and a compressor connection terminal 116. The overheat / overload protector 2 and C connecting piece are located within the overheat / overload protector cavity 111; the PTC starting relay 3, S connecting piece 5, and M connecting piece 6 are located within the PTC starting relay cavity 112; and the running capacitor 4 is located within the running capacitor cavity 113. The S connecting piece 5, M connecting piece 6, and C connecting piece are made of highly conductive, elastic metal sheets (such as stainless steel or phosphor bronze). All three connecting pieces can be integrated or separate and then reassembled into a single integrated structure. One end of the C-connector is a terminal socket for connecting to the lead-out terminal of the overheat and overload protector 2, and the other end of the C-connector is an L terminal. One end of the S-connector 5 is an S-hole, and the other end is a terminal socket for connecting the running capacitor 4. A spring contact for connecting the PTC starting relay 3 is located in the middle. One end of the M-connector 6 is an M-hole, and the other end is an N terminal. A spring contact for connecting the PTC starting relay 3 and a terminal socket for connecting the running capacitor 4 are located in the middle.

[0037] During production and installation, first, install the C connecting piece into the overheat and overload protector cavity 111. Insert the L terminal of the C connecting piece into the L terminal hole in the power connection terminal 115. Then, install the overheat and overload protector 2 into the overheat and overload protector cavity 111. Insert the lead-out terminal on the overheat and overload protector 2 into the lead-out terminal sleeve of the C connecting piece. The S connecting piece 5, M connecting piece 6, and PTC starting relay 3 are set in the PTC starting relay cavity 112. The S socket and M socket on the S connecting piece 5 and M connecting piece 6 and the C socket of the overheat and overload protector 2 form the compressor connection terminal 116 for easy connection to the compressor terminal. The spring clips in the middle of the S-connector 5 and M-connector 6 clamp and fix the PTC starting relay 3 inside the PTC starting relay cavity 112. The N terminal at one end of the M-connector 6 is inserted into the N terminal hole in the power connection terminal 115. The terminal sleeve connecting the running capacitor 4 in the middle of the S-connector 5 and M-connector 6 extends into the running capacitor cavity 113. Then, the inner cover plate 13 covers the PTC starting relay cavity 112 and fixes the terminal sleeve connecting the running capacitor 4 in the middle of the S-connector 5 and M-connector 6. The inner cover plate 13 is provided with an annular retaining strip for fixing the capacitor. The running capacitor 4 is a cylindrical aluminum shell capacitor with terminal leads and an S2 safety protection level structure. The two leads of the running capacitor 4 are respectively inserted into the terminal sleeves connecting the running capacitor on the S-connector 5 and M-connector 6, and the groove on the shell of the running capacitor 4 is locked onto the annular retaining strip on the inner cover plate 13. Then, the cover plate 12 is locked onto the shell base 11, and the running capacitor 4 is encapsulated in the plastic shell 1. Meanwhile, annular clips for fixing capacitors are also provided on the inner side of the cover plate 12 at opposite positions, which cooperate with the annular clips on the inner cover plate 13 to fix the capacitors in the running capacitor cavity 113.

[0038] During installation and use, first align the compressor connection end 116 of the refrigeration compressor electrical module assembly with the three terminals on the refrigeration compressor and press it down. While the refrigeration compressor electrical module assembly is electrically connected to the refrigeration compressor, the mounting clip 114 is connected and fixed to the mounting plate on the refrigeration compressor. Then, insert the two plug terminals on the power cord into the L terminal and N terminal in the power connection end 115, install the power cord protective cover 14, and fasten the power cord protective cover 14 to the power connection end 115. While protecting the L terminal and N terminal, the power cord is also pressed and fixed.

[0039] The refrigeration compressor electrical module assembly combines and installs three electrical components—an overheat and overload protector (2), a PTC starting relay (3), and a running capacitor (4)—within a single plastic housing (1). This design eliminates the need for lead cables and mounting hardware at the bottom of the housing, saving the compressor manufacturer the cost of an electrical cover and effectively reducing overall production material costs. During use, the compressor manufacturer only needs a single press to complete the installation, and the refrigerator manufacturer only needs to connect the power cord. This allows for simple, quick, and automated installation for both compressor and refrigerator manufacturers, significantly improving installation efficiency and reducing installation costs.

[0040] Please see Figure 10 The diagram shows the appearance of Embodiment 2 of the refrigeration compressor electrical module assembly of this utility model. The difference between Embodiment 2 and Embodiment 1 is that the operating capacitor 4 in Embodiment 1 is completely encapsulated within the plastic housing 1, while the operating capacitor 4 in Embodiment 2 is not completely encapsulated within the plastic housing 1. This reduces the amount of material used in the plastic housing 1 and lowers material costs.

[0041] Please see Figure 11 The diagram shows the appearance of Embodiment 3 of the refrigeration compressor electrical module assembly of this utility model. The difference between Embodiment 3 and Embodiment 1 is that the running capacitor 4 in Embodiment 1 is installed horizontally inside the plastic housing 1, while the running capacitor 4 in this embodiment is installed vertically inside the plastic housing 1.

[0042] Please see Figure 12 The diagram shows the appearance of Embodiment 4 of the refrigeration compressor electrical module assembly of this utility model. The difference between Embodiment 4 and Embodiment 1 is that the operating capacitor 4 in Embodiment 1 is a cylindrical capacitor, while the operating capacitor 4 in this embodiment is a square capacitor.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent changes and modifications made within the scope of the claims of this utility model should be considered within the technical scope of this utility model.

Claims

1. A refrigeration compressor electrical module assembly, comprising a plastic housing (1), wherein an overheat and overload protector (2), a PTC starting relay (3), and a running capacitor (4) are disposed within the plastic housing (1); characterized in that: The overheat and overload protector (2), the PTC starting relay (3) and the running capacitor (4) are housed in the same housing to form an electrical module assembly. It has two sets of terminals: one set of terminals consists of an L plug (72) and an N plug (62) forming a power connection terminal (115), and the other set of terminals consists of a C socket, an S socket (51) and an M socket (61) forming a compressor connection terminal (116). The overheat and overload protector (2) is connected to the L plug (72) on one side and to the C socket on the other side. The PTC starting relay (3) and the running capacitor (4) are connected in parallel. One side is connected to the N plug (62) and the M socket (61), and the other side is connected to the S socket (51).

2. The refrigeration compressor electrical module assembly as described in claim 1, characterized in that... The plastic housing (1) is equipped with a plastic cover.

3. The refrigeration compressor electrical module assembly as described in claim 1, characterized in that: The operating capacitor (4) is a cylindrical aluminum shell capacitor with terminal leads and is an S2 safety protection level structure.

4. The refrigeration compressor electrical module assembly as described in any one of claims 1-3, characterized in that: The running capacitor (4) is fixed in the running capacitor cavity (113) inside the plastic housing (1) by the clips on the plastic housing (1) and the annular groove on the running capacitor (4).

5. The refrigeration compressor electrical module assembly as described in claim 1, characterized in that: The plastic housing (1) has slots and strips on its left and right sides for connection and fixation with the compressor.

6. The refrigeration compressor electrical module assembly as described in claim 1, characterized in that: The L-pin (72) and N-pin (62) of the power connection terminal (115) are provided with protective covers.

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