Electric appliance module assembly of refrigeration compressor

Abstract

The invention 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] The invention relates to the technical field of refrigeration compressor starting, operation and motor protection, in particular to a refrigeration compressor electrical module assembly. Background Art

[0002] At present, there are two ways to adopt the existing technology solutions for the start-up, operation and motor protection of refrigeration compressors:

[0003] Method 1:

[0004] The refrigeration compressor is equipped with an overheat overload protector, a PTC starting relay and a running capacitor, and the three components are independent components. The overheat overload protector is directly installed on the C lead terminal of the refrigeration compressor, the PTC starting relay is installed on the S lead terminal and the M lead terminal of the refrigeration compressor, and the running capacitor is fixed on the bottom plate of the refrigerator and connected in parallel to the terminal on the PTC starting relay through the lead cable of the capacitor. The L line of the power line is connected to the terminal on the overheat overload protector, and the N line of the power line is connected to the M lead terminal of the compressor, and then a plastic cover is used to cover the three components to play a waterproof protection role.

[0005] Method 2:

[0006] The refrigeration compressor is equipped with an overheat overload protector, a PTC starter relay and a running capacitor. The overheat overload protector and the PTC starter relay are combined to form an integral structure - an integrated starter protector. The integrated starter protector is installed on the refrigeration compressor and connected to the C lead terminal, S lead terminal and M lead terminal on the compressor. The running capacitor is fixed on the bottom plate of the refrigerator and connected in parallel to the terminal of the PTC starter relay on the integrated starter protector through the lead cable of the capacitor. The L line of the power line is connected to the terminal on the overheat overload protector, and the N line of the power line is connected to the M lead terminal of the compressor. Then a plastic electrical protective cover is used to cover the three components to play a waterproof protection role.

[0007] Regardless of whether method 1 or method 2 is adopted, there are the following problems:

[0008] 1. The capacitor needs a longer lead-out cable, which has a high material cost. In addition, the capacitor needs to be fixed on the bottom plate of the refrigerator or on the outside of the plastic cover of the appliance, which has a high labor cost.

[0009] 2. The overheat overload protector, PTC starting relay and running capacitor are separate structures, and the installation cost is high.

[0010] 3. The overheat overload protector, PTC starting relay and running capacitor are separate structures. After being installed on the compressor, a plastic electrical protective cover must be installed to cover the three components to play a waterproof protection role, which increases the material cost and installation cost.

[0011] Summary of the invention

[0012] The purpose of the present invention is to provide a refrigeration compressor electrical module assembly, which mainly solves the problems of high material cost and high installation cost in the above-mentioned prior art, and can realize automatic installation as needed, further reducing production and installation costs.

[0013] To achieve the above purpose, the present invention is implemented in this way.

[0014] A refrigeration compressor electrical module assembly, comprising a plastic shell, in which an overheating overload protector, a PTC starting relay and a running capacitor are arranged. The characteristics are as follows: the overheating overload protector, the PTC starting relay and the running capacitor are arranged in the same shell to form an electrical module assembly, which has two groups of terminals: one group of terminals is composed of an L plug and an N plug to form a power connection terminal, and the other group of terminals is composed of a C socket, an S socket and an M socket to form a compressor connection terminal; one side of the overheating overload protector is connected to the L plug, and the other side is connected to the C socket; after the PTC starting relay is connected in parallel with the running capacitor, one side is connected to the N plug and the M socket, and the other side is connected to the S socket.

[0015] The refrigeration compressor electrical module assembly is characterized in that the plastic shell is provided with a plastic cover plate.

[0016] The refrigeration compressor electrical module assembly is characterized in that the operating capacitor is a cylindrical aluminum shell capacitor, the cylindrical aluminum shell capacitor has terminal lead-outs, and the cylindrical aluminum shell capacitor is an S2 safety protection grade structure.

[0017] The refrigeration compressor electrical module assembly is characterized in that the running capacitor is fixed in the running capacitor cavity in the plastic shell through the clamping strip on the plastic shell and the annular groove on the running capacitor.

[0018] The refrigeration compressor electrical module assembly is characterized in that: the left and right sides of the plastic shell are provided with card slots and card strips connected and fixed to the compressor.

[0019] The refrigeration compressor electrical module assembly is characterized in that a protective cover is provided outside the L plug and the N plug of the power connection end.

[0020] By means of the above structure, the present invention has the following beneficial effects:

[0021] The present invention provides a refrigeration compressor electrical module assembly, which adopts a flame-retardant plastic shell, has a small size and a simple structure, reduces the cost of raw materials and installation labor costs, and is easy to install and use. It mainly solves the problems of high material cost and high installation cost in the prior art. It can also realize automatic installation as needed, further reducing the production and installation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an electrical schematic diagram of the refrigeration compressor electrical module assembly of the present invention.

[0023] Figure 2 It is a schematic diagram of embodiment 1 of the present invention.

[0024] Figure 3 It is a schematic diagram of the shell base of Example 1 of the present invention.

[0025] Figure 4 yes Figure 3 Front view of.

[0026] Figure 5 yes Figure 3 Rear view of.

[0027] Figure 6 It is an assembly schematic diagram of embodiment 1 of the present invention.

[0028] Figure 7 This is a schematic diagram of the installation of the PTC starting relay in Example 1 of the present invention.

[0029] Figure 8 This is a schematic diagram of the PTC starting relay and the running capacitor after installation (without a cover plate) according to Example 1 of the present invention.

[0030] Fig. 9 This is a schematic diagram of the overheat and overload protector after installation according to Embodiment 1 of the present invention.

[0031] Fig.10 In Example 1 of the present invention Fig. 9 Rear view (without overheat overload protector 2)

[0032] Fig.11 Schematic diagram of the S connecting piece 5 in Example 1 of the present invention

[0033] Fig.12 Schematic diagram of the M connecting piece 6 in Embodiment 1 of the present invention

[0034] Fig.13 Schematic diagram of the C connecting piece 7 in Example 1 of the present invention

[0035] Fig.14 It is a schematic diagram of embodiment 2 of the present invention.

[0036] Fig.15 It is a schematic diagram of embodiment 3 (without cover plate) of the present invention.

[0037] Fig.16 It is a schematic diagram of embodiment 4 of the present invention (without cover plate).

[0038] In the figure: 1-plastic housing; 11-housing base; 111-overheat overload protector cavity; 112-PTC starting relay cavity; 113-running capacitor cavity; 114-installation card; 115-power connection terminal; 116-compressor connection terminal; 12-cover plate; 13-inner cover plate; 14-power cord protective cover; 2-overheat overload protector; 3-PTC starting relay; 4-running capacitor; 5-S connecting piece; 51-S socket; 52-terminal plug sleeve; 53-elastic card strip; 6-M connecting piece; 61-M socket; 62-N plug; 63-elastic card strip; 64-terminal plug sleeve; 7-C connecting piece; 71-terminal plug sleeve; 72-L plug. DETAILED DESCRIPTION

[0039] See also Figure 1 , the electrical schematic diagram of the refrigeration compressor electrical module assembly of the present invention. A refrigeration compressor electrical module assembly, which consists of an overheating and overload protector 2, a PTC starting relay 3 and a running capacitor 4. It is characterized in that the overheating and overload protector 2, the PTC starting relay 3 and the running capacitor 4 are arranged in the same housing to form an electrical module assembly, which has two groups of terminals: one group of terminals consists of an L plug 72 and an N plug 62 to form a power connection terminal 115, and the other group of terminals consists of a C socket, an S socket 51, and an M socket 61 to form a compressor connection terminal 116; one side of the overheating and overload protector 2 is connected to the L plug 72, and the other side is connected to the C socket; after the PTC starting relay 3 is connected in parallel with the running capacitor 4, 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. When used, the C socket, the M socket 61, and the S socket 51 are correspondingly inserted into the C terminal, the M terminal, and the S terminal of the refrigeration compressor.

[0040] See also Figure 2-Figure 13 , is a schematic diagram of the appearance of the embodiment 1 of the refrigeration compressor electrical module assembly of the present invention. The refrigeration compressor electrical module assembly consists of a plastic housing 1, an overheat overload protector 2, a PTC starting relay 3, a running capacitor 4, a power connection terminal 115, and a compressor connection terminal 116. The power connection terminal 115 consists of an L plug 72 and an N plug 62, and the compressor connection terminal 116 consists of a C socket, an S socket 51, and an M socket 61.

[0041] The plastic housing 1 is composed 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, the cover plate 12, the inner cover plate 13, and the power cord protective cover 14 are all made of excellent flame-retardant plastic injection molding. The housing base 11 is provided with an overheat overload protector cavity 111, a PTC starting relay cavity 112, a running capacitor cavity 113, an installation card 114, a power connection terminal 115, and a compressor connection terminal 116. The overheating overload protector 2 is arranged in the overheating overload protector cavity 111, and has two electrical connection ends: a C socket and a lead terminal, and the lead terminal is connected to the L plug 72 through a metal conductor; the PTC starting relay 3, the S socket 51, and the M socket 61 are arranged in the PTC starting relay cavity 112, and the S socket 51 and the M socket 61 are made of elastic metal sheets (such as stainless steel, phosphor copper, etc.) with good conductive properties, and the S socket 51 and the M socket 61 are provided with elastic clips 53 / 63 to connect and fix the PTC chip through elastic contact; the running capacitor 4 is arranged in the running capacitor cavity 113, and the two lead terminals of the running capacitor 4 are respectively connected to the S socket 51 and the M socket 61 through metal conductors. The N plug 62 of the power connection terminal 115 is connected to the M socket 61 through a metal conductor.

[0042] See also Figure 11-13 To facilitate production operations, the L plug 72 and the metal conductor connecting the L plug 72 and the lead-out terminal on the overheat overload protector 2 are preferably made of a metal conductor sheet to form an integral structure, which can be called a C connecting piece. One end of the C connecting piece is a terminal socket 71 for connecting to the lead-out terminal of the overheat overload protector 2, and the other end is an L plug 72; the S socket 51, the elastic clip 53 fixing one side of the PTC chip, and the metal conductor connected to one lead-out terminal of the running capacitor 4 are made of a metal conductor sheet to form an integral structure, which can be called an S connecting piece 5, one end of the S connecting piece 5 is an S socket 51, the other end is a terminal socket 52 connected to the running capacitor 4, and the middle position is provided with an elastic clip 53 connected to the PTC starting relay 3; the M socket 61, the elastic clip 63 fixing the other side of the PTC chip, the N plug 62 and the metal conductor connected to the other lead-out terminal of the running capacitor 4 are made of a metal conductor sheet to form an integral structure, which can be called an M connecting piece 6, one end of the M connecting piece 6 is an M socket 61, the other end is an N plug 62, and the middle position is provided with an elastic clip 63 connected to the PTC chip of the PTC starting relay 3 and a terminal socket 64 connected to the running capacitor 4.

[0043] During production and installation, first install the C connecting piece 7 in the overheating overload protector cavity 111, insert the L terminal 72 of the C connecting piece 7 into the L terminal hole in the power connection terminal 115, then install the overheating overload protector 2 in the overheating overload protector cavity 111, and insert the lead terminal on the overheating overload protector 2 into the lead terminal socket 71 of the C connecting piece 7; the S connecting piece 5, the M connecting piece 6 and the PTC starting relay 3 are arranged in the PTC starting relay cavity 112, and the S sockets 51 and the M sockets 61 on the S connecting piece 5 and the M connecting piece 6 and the C socket of the overheating overload protector 2 form the compressor connection terminal 116 for easy connection with the terminal of the compressor. The elastic clip strip 53 / 63 in the middle of the S connecting piece 5 and the M connecting piece 6 clamps and fixes the PTC starting relay 3 in the PTC starting relay cavity 112, the N plug 62 at one end of the M connecting piece 6 is inserted into the N terminal hole in the power connection terminal 115, and the terminal plug sleeve 52 / 64 in the middle of the S connecting piece 5 and the M connecting piece 6 that connects the running capacitor 4 extends into the running capacitor cavity 113. Then the inner cover plate 13 covers the PTC starting relay cavity 112, and the terminal plug sleeve 52 / 64 in the middle of the S connecting piece 5 and the M connecting piece 6 that connects the running capacitor 4 is fixed, and a ring clip strip for fixing the capacitor is provided on the inner cover plate 13. The running capacitor 4 adopts a cylindrical aluminum shell capacitor with terminal lead-out and S2 safety protection grade structure. Insert the two lead terminals of the running capacitor 4 into the terminal sockets 52 / 64 connected to the running capacitor on the S connecting piece 5 and the M connecting piece 6 respectively, and clamp the groove on the shell of the running capacitor 4 on the annular clamping strip on the inner cover plate 13, and then clamp the cover plate 12 on the shell base 11 to encapsulate the running capacitor 4 in the plastic shell 1. At the same time, an annular clamping strip for fixing the capacitor is also provided at a relative position on the inner side of the cover plate 12, which cooperates with the annular clamping strip on the inner cover plate 13 to fix the capacitor in the running capacitor cavity 113.

[0044] During installation and use, first align the compressor connection end 116 of the refrigeration compressor electrical module assembly with the three terminal posts on the refrigeration compressor and press it. While the refrigeration compressor electrical module assembly is electrically connected to the refrigeration compressor, the installation card 114 is connected and fixed to the mounting plate on the refrigeration compressor. Then, insert the two socket terminals on the power cord into the L plug 72 and N plug 62 in the power connection end 115, install the power cord protective cover 14, and fix the power cord on the power connection end 115. While protecting the L plug 72 and N plug 62, press the power cord tightly and fix it.

[0045] The refrigeration compressor electrical module assembly combines and connects three electrical components, namely, the overheat overload protector 2, the PTC starting relay 3, and the running capacitor 4, in a plastic housing 1. The capacitor saves the lead-out cable and the mounting parts at the bottom of the housing, and the compressor manufacturer saves an electrical cover, which effectively reduces the overall production material cost. When in use, the compressor manufacturer only needs to press a button to complete the installation, and the refrigerator manufacturer only needs to connect the power cord. This enables the compressor manufacturer to achieve simple and fast installation, and can realize automated installation. At the same time, the refrigerator manufacturer also achieves simple and fast installation, effectively improving the installation efficiency and greatly reducing the installation cost.

[0046] See also Fig.14 , a schematic diagram of the appearance of the embodiment 2 of the refrigeration compressor electrical module assembly of the present invention. The difference between the embodiment 2 and the embodiment 1 is that the running capacitor 4 in the embodiment 1 is completely encapsulated in the plastic housing 1, while the running capacitor 4 in the embodiment 2 is not completely encapsulated in the plastic housing 1, which can reduce the material usage of the plastic housing 1 and reduce the material cost.

[0047] See also Fig.15 , a schematic diagram of the appearance of the embodiment 3 of the refrigeration compressor electrical module assembly of the present invention. The difference between it and the embodiment 1 is that the running capacitor 4 in the embodiment 1 is installed horizontally in the plastic housing 1, while the running capacitor 4 in this embodiment is installed vertically in the plastic housing 1.

[0048] See also Fig.16 , a schematic diagram of the appearance of the embodiment 4 of the refrigeration compressor electrical module assembly of the present invention. The difference between it and the embodiment 1 is that the running capacitor 4 in the embodiment 1 is a cylindrical capacitor, while the running capacitor 4 in this embodiment is a square capacitor.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. That is, any equivalent changes and modifications made according to the content of the patent application scope of the present invention should be within the technical scope of the present invention.

Claims

1. A refrigeration compressor electrical module assembly, comprising a plastic housing (1), wherein an overheat overload protector (2), a PTC starting relay (3) and a running capacitor (4) are arranged in the plastic housing (1). The characteristics are: The overheating and overload protector (2), the PTC starting relay (3) and the running capacitor (4) are arranged in the same housing to form an electrical module assembly, which has two groups of wiring terminals: one group of wiring terminals is composed of an L plug (72) and an N plug (62) to form a power connection terminal (115), and the other group of wiring terminals is composed of a C socket, an S socket (51) and an M socket (61) to form a compressor connection terminal (116); one side of the overheating and overload protector (2) is connected to the L plug (72) and the other side is connected to the C socket; after 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 according to claim 1, characterized in that The plastic housing (1) is provided with a plastic cover plate.

3. The refrigeration compressor electrical module assembly according to claim 1, characterized in that: The operating capacitor (4) is a cylindrical aluminum shell capacitor having terminal lead-outs and an S2 safety protection grade structure.

4. The refrigeration compressor electrical module assembly according to claim 1, 2 or 3, characterized in that: The running capacitor (4) is fixed in a running capacitor cavity (113) in the plastic housing (1) through a clamping strip on the plastic housing (1) and an annular groove on the running capacitor (4).

5. The refrigeration compressor electrical module assembly according to claim 1, characterized in that: The left and right sides of the plastic shell (1) are provided with card slots and card strips which are connected and fixed to the compressor.

6. The refrigeration compressor electrical module assembly according to claim 1, characterized in that: The L plug (72) and the N plug (62) of the power connection end (115) are provided with protective covers outside.

Images