Compressor wiring protection structure, compressor and refrigeration equipment

Abstract

The invention discloses a compressor wiring protection structure, a compressor and refrigeration equipment, and the compressor wiring protection structure comprises a compressor housing which is provided with a wiring terminal; the shell assembly comprises a metal shell and an insulating lining, the metal shell is connected to the compressor shell, the insulating lining is assembled in the metal shell, a cavity is formed in the insulating lining, and the shell assembly is provided with a power line mounting hole communicated with the cavity; the starting protector is arranged in the cavity, the starting protector is connected with the wiring terminal, the starting protector is provided with a power line, the power line is tightly installed in the power line installation hole, and the cavity forms a sealed cavity separated from the outside. The starting protector is located in the shell assembly with good sealing performance, air circulation is avoided, oxygen is isolated from entering, external air supplement is avoided, and therefore the risk that fire disasters are generated due to ignition of the starting protector under the extreme condition is completely eradicated. The device is few in parts, simple in structure, good in sealing performance and capable of eradicating flame development and avoiding fire disasters.

Description

Technical Field

[0001] The present invention is used in the field of compressors, and particularly relates to a compressor wiring protection structure, a compressor, and a refrigeration device. Background Art

[0002] The fixed-frequency compressor used in household refrigerators is driven by an asynchronous motor. In order to make the asynchronous motor work properly, a starter needs to be installed on the fixed-frequency compressor. In order to protect the safety of the fixed-frequency compressor motor, a protector needs to be installed to play the role of overcurrent and overheat protection. Both the starter and the protector have plastic shells. The asynchronous motor of the fixed-frequency compressor is installed inside the compressor housing and is connected to an external power supply through the power terminals on the lower housing. The starter and the protector are installed on the power terminals of the lower housing. The starter and the protector are powered by connecting the power supply wires through their own terminals. Since the power supply used by the compressor is the mains power with a high voltage, there is a risk of electric shock. For safety, to avoid risks such as electric shock and leakage, a relay bracket needs to be installed around the power terminals of the compressor lower housing, and then a relay cover made of plastic is used to enclose the starter and the protector to ensure electrical safety. Since the connection of the power supply wires to the protector and the starter occupies a relatively large space, the relay cover needs to be of a large size, resulting in a large internal space with a lot of air. When encountering extreme working conditions, such as too high ambient temperature, too large compressor load, etc., the starter and the protector will overheat and generate electric sparks. Because there is a large internal space in the relay cover and there is enough oxygen, the electric sparks will ignite the plastic shells of the starter and the protector, further ignite the power supply wires and the relay cover, and finally cause a fire.

[0003] In summary, the problems existing in the related art need to be solved urgently. Summary of the Invention

[0004] An object of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a compressor wiring protection structure, a compressor, and a refrigeration device.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0006] In a first aspect, a compressor wiring protection structure includes:

[0007] A compressor housing provided with wiring terminals;

[0008] An outer shell assembly including a metal outer shell and an insulating lining. The metal outer shell is connected to the compressor housing, the insulating lining is assembled inside the metal outer shell, a cavity is provided inside the insulating lining, and the outer shell assembly is provided with a power supply wire installation hole communicating with the cavity;

[0009] The starting protector is arranged in the cavity. The starting protector is connected to the terminal block. The starting protector is provided with a power cord, and the power cord is tightly installed in the power cord installation hole. The cavity forms a sealed cavity separated from the outside.

[0010] Combined with the first aspect, in some implementation manners of the first aspect, the inner wall surface of the cavity of the insulating lining is a profiling surface matching the starting protector.

[0011] Combined with the first aspect and the above implementation manners, in some implementation manners of the first aspect, it further includes a heat conduction component. The housing assembly is provided with a heat conduction component installation hole at the top of the cavity. The heat conduction component is tightly installed in the heat conduction component installation hole. One end of the heat conduction component extends into the cavity, and one end of the heat conduction component extends outside the housing assembly.

[0012] Combined with the first aspect and the above implementation manners, in some implementation manners of the first aspect, the heat conduction component includes a heat pipe, and the heat pipe includes a metal shell and a heat transfer medium filled inside the metal shell.

[0013] Combined with the first aspect and the above implementation manners, in some implementation manners of the first aspect, the metal shell includes an aluminum shell, and the heat transfer medium includes water.

[0014] Combined with the first aspect and the above implementation manners, in some implementation manners of the first aspect, the metal housing forms a through housing inner cavity from front to back. The insulating lining is assembled in the housing inner cavity. The cavity forms an opening at one end facing the compressor housing. The starting protector is arranged in the cavity through the opening. The metal housing is provided with an inward flanging at one end of the housing inner cavity, and the inward flanging is hermetically welded to the welding plane of the compressor housing.

[0015] Combined with the first aspect and the above implementation manners, in some implementation manners of the first aspect, the metal housing is provided with an end cover plate at the other end of the housing inner cavity. The end cover plate extends outward from one side of the housing inner cavity. After being bent, the end cover plate covers the housing inner cavity. The end edge of the end cover plate is provided with a first screw installation convex edge, and the metal housing is provided with a second screw installation convex edge that is fixedly connected to the first screw installation convex edge through a screw.

[0016] Combined with the first aspect and the above implementation manners, in some implementation manners of the first aspect, the insulating lining is provided with the power cord installation hole at one end of the cavity far from the compressor housing, and the end cover plate is provided with a wire groove at a position corresponding to the power cord installation hole.

[0017] In a second aspect, a compressor includes the compressor wiring protection structure according to any of the above implementation manners.

[0018] In a third aspect, a refrigeration device includes a compressor according to any one of the above implementation manners.

[0019] One of the technical solutions in the above technical solutions has at least one of the following advantages or beneficial effects: In the technical solution of the present invention, the compressor wiring protection structure has good sealing performance. The start protector is located inside the housing assembly with good sealing performance, avoiding air circulation, isolating the entry of oxygen, and preventing the supplement of external air. Therefore, the risk of fire caused by the start protector arcing under extreme conditions is eliminated. The present invention has few parts, a simple structure, and good sealing, and can prevent the development of flames and avoid fire.

[0020] The additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0022] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0023] Figure 2 is an exploded schematic structural diagram of an embodiment of the present invention;

[0024] Figure 3 is a sectional view of the internal structure of the housing assembly of an embodiment of the present invention;

[0025] Figure 4 is a schematic structural diagram of one end of the housing assembly of an embodiment of the present invention facing the compressor housing;

[0026] Figure 5 is a schematic structural diagram of the metal housing of an embodiment of the present invention;

[0027] Figure 6 is a schematic structural diagram of the internal structure of the insulating lining of an embodiment of the present invention;

[0028] Figure 7 is a sectional structural diagram of the insulating lining of an embodiment of the present invention;

[0029] Figure 8 is a schematic structural diagram of the end of the insulating lining of an embodiment of the present invention. Detailed Embodiments

[0030] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The function of the accompanying drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0031] In the present invention, when directions (up, down, left, right, front, and back) are described, it is only for the convenience of describing the technical solution of the present invention, rather than indicating or implying that the technical features referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present invention.

[0032] In the present invention, the meaning of "several" is one or more, the meaning of "multiple" is two or more, and "greater than", "less than", "exceeding", etc. are understood to exclude the present number; "above", "below", "within", etc. are understood to include the present number. In the description of the present invention, if "first" and "second" are described, they are only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0033] In the present invention, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense. For example, they can be directly connected, or indirectly connected through an intermediate medium; they can be fixedly connected, or detachably connected, or integrally formed; they can be mechanically connected, or electrically connected or capable of communicating with each other; they can be the communication inside two components or the interaction relationship between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in the present invention in combination with the specific content of the technical solution.

[0034] See Figure 1 、 Figure 2 、 Figure 3 , an embodiment of the present invention provides a compressor wiring protection structure, including a compressor housing 100, a housing assembly 200, and a starting protector 300. The compressor housing 100 is provided with a wiring terminal 101. The compressor can be connected to the starting protector 300 through the wiring terminal 101, and the starting protector 300 is further connected to an external power supply through a power cord 301.

[0035] The housing assembly 200 includes a metal housing 201 and an insulating lining 202. The metal housing 201 is connected to the compressor housing 100. The insulating lining 202 is made of non-metallic materials, such as flame-retardant plastic materials. The insulating lining 202 is assembled inside the metal housing 201. A cavity 203 is provided inside the insulating lining 202. The housing assembly 200 is provided with a power line installation hole 204 connected to the cavity 203. The power line installation hole 204 serves as a through hole for leading out the power line 301 of the start protector 300.

[0036] The start protector 300 includes a starter 302 and a protector 303. The start protector 300 is arranged in the cavity 203. The start protector 300 is connected to the wiring terminal 101. The start protector 300 is provided with a power cord 301. The power cord 301 is tightly installed in the power cord installation hole 204. The cavity 203 forms a sealed cavity 203 separated from the outside, and air cannot enter the cavity 203 to supplement oxygen.

[0037] Combination Figures 1 - 3 In the technical solution of the present invention, the compressor wiring protection structure has good sealing performance, and the start protector 300 is located inside the well-sealed housing assembly 200, which prevents air circulation, isolates the entry of oxygen, and prevents the replenishment of external air. Therefore, the risk of the start protector 300 igniting and causing a fire in extreme cases is eliminated. The present invention has few parts, a simple structure, and good sealing, and can prevent the development of flames and avoid fires.

[0038] In some embodiments, see Figure 3 , Figure 6 , Figure 7 , the inner wall surface of the cavity 203 of the insulating liner 202 is a contoured surface that matches the start protector 300. Alternatively, the inside of the insulating liner 202 is a special-shaped structure with different wall thicknesses at different locations, which tries to match the shape of the start protector 300 and occupies the maximum volume inside the cavity 203 of the insulating liner 202 as much as possible, thereby minimizing the amount of air inside the cavity 203, that is, reducing the amount of oxygen inside the cavity 203, and effectively extinguishing the flame formed inside the cavity 203 in extreme cases, preventing the small flame from further developing and forming a fire.

[0039] In some embodiments, see Figures 1 - 4, the compressor wiring protection structure further includes a heat-conducting component 400. The outer shell assembly 200 is provided with a heat-conducting component mounting hole at the top of the cavity 203. The heat-conducting component 400 is tightly installed in the heat-conducting component mounting holes of the metal shell 201 and the insulating lining 202. The heat-conducting component mounting holes are sealed so that air cannot enter, isolating the oxygen supply. One end of the heat-conducting component 400 extends into the cavity 203 and is placed above the starting protector 300, and one end of the heat-conducting component 400 extends outside the outer shell assembly 200. When the starter 302 and the protector 303 have abnormal conditions and generate excessive heat, the heat-conducting component 400 quickly transfers the accumulated heat to the outside of the outer shell assembly 200, quickly and effectively reducing the temperature inside the outer shell assembly 200, preventing the starter 302 and the protector 303 from overheating and causing arcing, and effectively reducing the risk of fire.

[0040] See Figure 6 、 Figure 7 , the insulating lining 202 is provided with a mounting boss 205 inside corresponding to the heat-conducting component mounting hole, increasing the mounting strength. The mounting boss 205 further squeezes out the air in the cavity 203 of the insulating lining 202, reducing the amount of oxygen.

[0041] The heat-conducting component 400 can adopt a heat-conducting component such as a metal rod.

[0042] In some embodiments, the heat-conducting component 400 includes a heat pipe. The heat pipe includes a metal shell and a heat transfer medium filled inside the metal shell. When the starter 302 and the protector 303 have abnormal conditions and generate excessive heat, the heat pipe quickly transfers the accumulated heat to the outside of the outer shell assembly 200 through the heat transfer medium and the metal shell, quickly and effectively reducing the temperature inside the outer shell assembly 200, preventing the starter 302 and the protector 303 from overheating and causing arcing, and effectively reducing the risk of fire.

[0043] In some embodiments, the metal shell includes an aluminum shell, and the heat transfer medium includes water. In extreme cases, when a small flame is generated by the starter 302 or the protector 303 and the internal space of the outer shell assembly 200 is heated above the melting point of the aluminum shell of the heat pipe before the internal oxygen is exhausted, the heat pipe fails due to breakage, and the water inside the heat pipe flows out, which can quickly extinguish the small flame and cool the inside, preventing the further development of the small flame and forming a fire.

[0044] In some embodiments, see Figure 2 、 Figure 5, the metal housing 201 forms a housing inner cavity 206 that penetrates through from front to back. The insulating lining 202 is assembled in the housing inner cavity 206. The cavity 203 forms an opening at one end facing the compressor housing 100. The starting protector 300 is disposed in the cavity 203 through the opening. The metal housing 201 is provided with an inward flange 207 at one end of the housing inner cavity 206, which wraps the wiring terminal 101 inside. The inward flange 207 is hermetically welded to the welding plane of the compressor housing 100 to form a sealed structure, and air cannot enter the inside of the housing assembly 200 to supplement oxygen.

[0045] Furthermore, referring to Figures 1 - 5 , the metal housing 201 is provided with an end cover plate 208 at the other end of the housing inner cavity 206. The end cover plate 208 extends outward from one side of the housing inner cavity 206. After being bent, the end cover plate 208 covers the housing inner cavity 206. The end edge of the end cover plate 208 is provided with a first screw mounting flange 209, and the first screw mounting flange 209 is provided with a first screw mounting hole 210. The metal housing 201 is provided with a second screw mounting flange 211 that is fixedly connected to the first screw mounting flange 209 by a screw 500, and the second screw mounting flange 211 is provided with a second screw mounting hole 212. The top of the metal housing 201 is provided with a heat conduction component mounting hole 213. In this embodiment, the metal housing 201 can be integrally formed by using a metal material, and preferably a cold-rolled steel plate material, which has lower manufacturing and assembly difficulties.

[0046] Referring to Figure 7 , Figure 8 , the insulating lining 202 is assembled inside the metal housing 201, and both ends are flush with both ends of the metal housing 201. The upper side of the insulating lining 202 is provided with a heat conduction component mounting hole 214, which is aligned with the heat conduction component mounting hole on the upper side of the metal housing 201. The insulating lining 202 is provided with a power line mounting hole 204 at the end of the cavity 203 away from the compressor housing 100. The power line 301 is tightly mounted in the power line mounting hole 204 to form a seal to prevent air from entering and cut off the oxygen supply. The insulating lining 202 has a larger wall thickness at the end of the cavity 203 away from the compressor housing 100 because the installation space for the power line 301 is larger and the oxygen amount is the largest at ordinary times. By increasing the wall thickness at this position, more air can be squeezed out. The end cover plate 208 is provided with a wire groove 215 at the position corresponding to the power line mounting hole 204 for installing the power line 301 to supply power to the compressor.

[0047] Combined with Figure 1 , Figure 2, the assembly sequence of the solution of the present invention is as follows: the metal housing 201 is welded on the welding plane of the compressor housing 100; the starter 302 and the protector 303 are installed; the power cord 301 is plugged in; the power cord 301 passes through the power cord installation hole 204 of the insulating lining 202, and then the power cord 301 passes through the wire groove of the end cover plate 208 of the metal housing 201; the lining is installed inside the metal housing 201 with the ends flush; the heat pipe is assembled; the end cover plate 208 of the metal housing 201 is bent, and the first screw installation flange 209 and the second screw installation flange 211 are aligned; the screws are tightened to fasten the end cover plate 208, and the assembly is completed.

[0048] An embodiment of the present invention further provides a compressor, including the compressor wiring protection structure in any of the above embodiments.

[0049] An embodiment of the present invention further provides a refrigeration device, including the compressor in any of the above embodiments.

[0050] In the description of this specification, the description with reference to terms such as "example", "embodiment" or "some embodiments" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0051] Of course, the present invention is not limited to the above embodiments. Those skilled in the art can make equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A wiring protection structure for a compressor, characterized in that, Comprising: A compressor housing provided with a terminal block; An outer shell assembly including a metal outer shell and an insulating lining. The metal outer shell is connected to the compressor housing. The insulating lining is assembled inside the metal outer shell. A cavity is provided inside the insulating lining. The outer shell assembly is provided with a power line mounting hole communicating with the cavity; A starting protector is disposed in the cavity. The starting protector is connected to the terminal block. The starting protector is provided with a power line. The power line is tightly mounted in the power line mounting hole. The cavity forms a sealed cavity separated from the outside; 2. The compressor wiring protection structure according to claim 1, characterized in that, The inner wall surface of the cavity of the insulating lining is a profiling surface matching the starting protector; 3. The compressor wiring protection structure according to claim 1, characterized in that, It further includes a heat conducting component. The outer shell assembly is provided with a heat conducting component mounting hole at the top of the cavity. The heat conducting component is tightly mounted in the heat conducting component mounting hole. One end of the heat conducting component extends into the cavity, and one end of the heat conducting component extends outside the outer shell assembly; 4. The compressor wiring protection structure according to claim 3, wherein, The heat conducting component includes a heat pipe. The heat pipe includes a metal shell and a heat transfer medium filled inside the metal shell; 5. The compressor wiring protection structure according to claim 4, characterized in that, The metal shell includes an aluminum shell, and the heat transfer medium includes water; 6. The compressor wiring protection structure according to claim 1, wherein, The metal outer shell forms a through shell inner cavity from front to back. The insulating lining is assembled in the shell inner cavity. The cavity forms an opening at one end facing the compressor housing. The starting protector is disposed in the cavity through the opening. The metal outer shell is provided with an inward flanging at one end of the shell inner cavity. The inward flanging is hermetically welded to the welding plane of the compressor housing; 7. The compressor wiring protection structure according to claim 6, characterized in that, The metal outer shell is provided with an end cover plate at the other end of the shell inner cavity. The end cover plate extends outward from one side of the shell inner cavity. The end cover plate is bent to cover the shell inner cavity. The end edge of the end cover plate is provided with a first screw mounting flange. The metal outer shell is provided with a second screw mounting flange that is fixedly connected to the first screw mounting flange by screws; 8. The compressor wiring protection structure according to claim 7, characterized in that, The insulating lining is provided with the power line mounting hole at one end of the cavity away from the compressor housing. The end cover plate is provided with a wire groove at a position corresponding to the power line mounting hole; 9. A compressor, characterized in that, It includes the compressor wiring protection structure according to any one of claims 1 to 8; 10. A refrigeration device, characterized in that, It includes the compressor according to claim 9.

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