Compressor and refrigeration device

Abstract

The invention relates to a compressor and a refrigerating device. The terminal (21) protrudes to the outside of the housing (11). The cover member (30) covers the terminal (21) so as to define an internal space (S) between the cover member (30) and the housing (11). The sealing member (45) is disposed between the housing (11) and the cover member (30). The first fixing part (41) is provided on the housing (11) and is arranged in the inner space (S) of the cover member (30). The second fixing part (42) is provided to the cover member (30) and is fixed to the first fixing part (41). As a result, dust-proof and water-proof properties of the first fixing part and the second fixing part can be ensured.

Description

Compressors and refrigeration units Technical Field

[0001] This disclosure relates to a compressor and a refrigeration device. Background Technology

[0002] Patent document 1 discloses a compressor in which a second fixing part (mounting base fixing part) for terminal protection is mounted on a first fixing part (terminal protection mounting base) of the compressor assembly by screws.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent No. 6399168 Summary of the Invention

[0006] -The technical problem the invention aims to solve-

[0007] Here, the first fixing part and the second fixing part are arranged to be exposed outside the terminal protection member, so it is difficult to ensure the dustproof and waterproof properties of the first fixing part and the second fixing part.

[0008] The purpose of this disclosure is to ensure the dustproof and waterproof properties of the first and second fixing parts.

[0009] - Technical solutions for solving technical problems -

[0010] The first aspect of this disclosure relates to a compressor including a housing 11, a terminal block 21, a cover member 30, a sealing member 45, a first fixing part 41, and a second fixing part 42. The terminal block 21 protrudes outward from the housing 11. The cover member 30 covers the terminal block 21 in such a way that an internal space S is defined between the cover member 30 and the housing 11. The sealing member 45 is disposed between the housing 11 and the cover member 30. The first fixing part 41 is disposed on the housing 11 and disposed in the internal space S of the cover member 30. The second fixing part 42 is disposed on the cover member 30 and fixed to the first fixing part 41.

[0011] In the first aspect, by arranging the first fixing part 41 of the housing 11 and the second fixing part 42 of the cover member 30 in the internal space S, the dustproof and waterproof properties of the first fixing part 41 and the second fixing part 42 can be ensured.

[0012] The second aspect of this disclosure, based on the compressor of the first aspect, is that the protruding length L1 of the first fixing part 41 protruding from the housing 11 and the protruding length L2 of the wiring terminal 21 protruding from the housing 11 satisfy the condition L1 < L2.

[0013] In the second aspect, by making the protruding length L1 of the first fixing part 41 smaller than the protruding length L2 of the terminal 21, it is possible to prevent the first fixing part 41 from becoming an obstacle.

[0014] The third aspect of this disclosure, based on the compressor of the first or second aspect, provides a cable insertion port 34 formed on the cover component 30, and a waterproof cable connector 38 is provided at the cable insertion port 34.

[0015] In the third aspect, by providing a waterproof cable connector 38 at the cable insertion port 34, it is possible to prevent dust and water from entering the internal space S from the cable insertion port 34.

[0016] Based on the compressor of any of the first to third aspects of this disclosure, the outer peripheral portion of the sealing member 45 protrudes outward from the outer peripheral portion of the cover member 30 on the side of the housing 11.

[0017] In the fourth aspect, by making the outer peripheral edge of the sealing member 45 protrude outward from the outer peripheral edge of the cover member 30 on the side closer to the housing 11, it is possible to suppress the accumulation of water between the housing 11 and the cover member 30.

[0018] The fifth aspect of this disclosure, based on the compressor of the fourth aspect, wherein the cover component 30 is formed of a metal material different from the metal material forming the surface of the housing 11.

[0019] In the fifth aspect, it is possible to suppress electro-corrosion between the housing 11 and the cover component 30, which are made of different metal materials.

[0020] The sixth aspect of this disclosure, based on the compressor of the fifth aspect, wherein the surface of the housing 11 is formed of a metal material sprayed with aluminum, and the cover component 30 is formed of an ferrous material.

[0021] In the sixth aspect, it is possible to suppress electro-corrosion between the surface of the aluminum-plated housing 11 and the cover component 30 made of ferrous material.

[0022] Based on the compressor of any one of the first to sixth aspects of this disclosure, the seventh aspect of the cover component 30 includes a side wall portion 31, a cover portion 35, and a sealing portion 36. The side wall portion 31 is formed in a cylindrical shape and covers the periphery of the wiring terminal 21. The cover portion 35 opens and closes an opening on the side of the side wall portion 31 opposite to the housing 11. The sealing portion 36 is disposed between the side wall portion 31 and the cover portion 35.

[0023] In the seventh aspect, by removing the cover 35 from the side wall portion 31, it is possible to enter the interior space S through the opening in the side wall portion 31 for maintenance work. Furthermore, by providing a sealing portion 36 between the side wall portion 31 and the cover 35, it is possible to prevent dust and water from entering the interior space S.

[0024] The eighth aspect of this disclosure relates to a refrigeration apparatus comprising a compressor 10 as described in any one of the first to seventh aspects.

[0025] In the eighth aspect, a refrigeration apparatus including a compressor 10 can be provided. Attached Figure Description

[0026] Figure 1 is a refrigerant circuit diagram showing the structure of the refrigeration apparatus according to the first embodiment.

[0027] Figure 2 is a side view showing the structure of the compressor.

[0028] Figure 3 is a longitudinal sectional view showing the structure of the first fixing part and the second fixing part.

[0029] Figure 4 is a cross-sectional view showing the structure of the first fixing part and the second fixing part.

[0030] Figure 5 is a side view showing the structure of the first fixing part.

[0031] Figure 6 is a side view showing the structure of the second fixing part.

[0032] Figure 7 is a side view showing the structure of the first fixing part according to the second embodiment.

[0033] - Symbol Explanation -

[0034] 1 – Refrigeration unit; 10 – Compressor; 11 – Housing; 21 – Terminal block; 30 – Cover component; 31 – Side wall; 34 – Cable insertion port; 35 – Cover; 36 – Sealing part; 38 – Waterproof cable connector; 41 – First fixing part; 42 – Second fixing part; 45 – Sealing component; S – Internal space. Detailed Implementation

[0035] (First Implementation)

[0036] As shown in Figure 1, compressor 10 is installed in refrigeration unit 1. Compressor 10 is, for example, a scroll compressor. It should be noted that compressor 10 can also be a rotary compressor.

[0037] The refrigeration unit 1 has a refrigerant circuit 1a filled with refrigerant. The refrigerant circuit 1a includes a compressor 10, a radiator 3, a pressure reducing mechanism 4, and an evaporator 5. The pressure reducing mechanism 4 is, for example, an expansion valve. The refrigerant circuit 1a performs a vapor compression refrigeration cycle.

[0038] Refrigeration unit 1 is an air conditioning unit. The air conditioning unit can be a dedicated refrigeration unit, a dedicated heating unit, or an air conditioning unit that switches between refrigeration and heating. In this case, the air conditioning unit has a switching mechanism (e.g., a four-way reversing valve) for switching the refrigerant circulation direction. Refrigeration unit 1 can also be a water heater, a cooling unit, a cooling device for cooling the air inside a storage facility, etc. The cooling device cools the internal air of cold storage rooms, frozen storage rooms, marine containers, etc.

[0039] As shown in Figures 2-4, the compressor 10 includes a housing 11. Inside the housing 11 are a compression mechanism (not shown), an electric motor, a drive shaft, etc. The compression mechanism is connected to the electric motor via the drive shaft. The electric motor uses electricity supplied from a power source (not shown) outside the housing 11 to rotate the drive shaft. As the drive shaft rotates, the compression mechanism compresses the refrigerant.

[0040] The shell 11 has a body 12, an upper bowl 13, and a lower bowl 14. The body 12 is a cylindrical component. The upper bowl 13 is hermetically joined to the upper end of the body 12. The lower bowl 14 is hermetically joined to the lower end of the body 12.

[0041] Aluminum sputtering is performed on the surface of the housing 11. Aluminum sputtering refers to a surface treatment method in which a heated and dropletized aluminum sputtering material is sprayed onto the surface of the housing 11, thereby forming a coating on the surface of the housing 11. Aluminum sputtering is performed with the first fixing part 41 (described later) attached to the housing 11.

[0042] In this way, by applying aluminum plating to the surface of the housing 11, the corrosion resistance of the housing 11 can be improved, for example, when the compressor 10 is used in environments requiring high corrosion resistance, such as marine containers.

[0043] A suction pipe 15 and an injection pipe 16 are installed on the side of the upper bowl 13. A support leg 18 is installed on the lower surface of the lower bowl 14. An ejection pipe 17 and a cover component 30 are installed on the side of the torso 12.

[0044] As shown in Figures 3 and 4, a terminal block 20 is provided on the side of the housing 11. A wiring terminal 21 is provided on the terminal block 20. One end of the wiring terminal 21 is connected to a motor (not shown) inside the housing 11. The other end of the wiring terminal 21 protrudes outward from the housing 11 and is connected to a power supply (not shown).

[0045] <Cover Components>

[0046] The cover component 30 covers the terminal 21 in such a way that it defines an internal space S between the cover component 30 and the housing 11. The cover component 30 is formed of a metal material different from the metal material forming the surface of the housing 11. Specifically, the surface of the housing 11 is formed of a metal material that has been sprayed with aluminum. The cover component 30 is formed of an iron-based material. The cover component 30 is, for example, formed of stainless steel.

[0047] The cover component 30 has a side wall portion 31, a cover portion 35, and a sealing portion 36. The side wall portion 31 is formed into a quadrilateral cylindrical shape, covering the periphery of the wiring terminal 21. A flange portion 32 is provided at the end of the side wall portion 31 on the side near the housing 11.

[0048] The flange portion 32 extends around the periphery of the opening of the sidewall portion 31. A cover mounting portion 33 is provided at the end of the sidewall portion 31 on the side opposite to the housing 11. A threaded hole 33a is formed in the cover mounting portion 33.

[0049] A cable insertion port 34 is formed on the side wall portion 31 of the cover component 30. In the example shown in FIG3, the cable insertion port 34 is formed on the lower surface of the side wall portion 31. A waterproof cable connector 38 is provided at the cable insertion port 34.

[0050] The waterproof cable connector 38 seals the cable insertion port 34 while maintaining the connection of a cable (not shown) to the terminal block 21. The cable (not shown) extends from the cable insertion port 34 to the outside of the cover component 30.

[0051] The cover portion 35 opens and closes to the opening on the side of the side wall portion 31 opposite to the housing 11. A through hole 35a is formed in the cover portion 35. The through hole 35a is formed at a position corresponding to the threaded hole 33a of the cover mounting portion 33. The shaft portion of the fastening bolt 50 passes through the through hole 35a. The cover portion 35 is fastened to the cover mounting portion 33 by the fastening bolt 50.

[0052] A sealing portion 36 is disposed between the periphery of the opening and the cover portion 35, the opening being on the side of the side wall portion 31 opposite to the housing 11. The sealing portion 36 seals the gap between the side wall portion 31 and the cover portion 35.

[0053] A sealing member 45 is arranged between the housing 11 and the cover member 30. Specifically, the sealing member 45 is formed into a quadrilateral frame shape corresponding to the shape of the flange portion 32. The sealing member 45 is arranged between the surface of the housing 11 and the flange portion 32 of the side wall portion 31.

[0054] Here, the outer periphery of the sealing member 45 protrudes outwards from the outer periphery of the cover member 30 on the side closest to the housing 11, i.e., the outer periphery of the flange 32. In the examples shown in Figures 3 and 4, the outer periphery of the sealing member 45 protrudes outwards by a predetermined amount h compared to the outer periphery of the flange 32. This prevents water accumulation between the housing 11 and the cover member 30.

[0055] It should be noted that in the examples shown in Figures 3 and 4, the protrusion h of the outer periphery of the sealing member 45 is made uniform around the entire circumference, but this is not a limitation. For example, the protrusion h of the upper outer periphery of the sealing member 45, which is prone to water accumulation, may be made greater than the protrusion h of other parts, thus making the protrusion h of the outer periphery of the sealing member 45 non-uniform.

[0056] As shown in Figure 5, a first fixing part 41 is provided on the housing 11. The first fixing part 41 is formed by bending both ends of a quadrilateral frame member toward the housing 11.

[0057] As shown in Figure 3, the protrusion length of the first fixing part 41 protruding from the housing 11 is set as L1, and the protrusion length of the terminal 21 protruding from the housing 11 is set as L2. At this time, the condition L1 < L2 is set to be satisfied.

[0058] The first fixing part 41 is arranged to surround the periphery of the terminal 21 when viewed axially from the terminal 21. The first fixing part 41 is joined to the surface of the housing 11, for example, by welding. The first fixing part 41 is arranged in the internal space S of the cover member 30. A threaded hole 41a is formed in the first fixing part 41.

[0059] As shown in Figure 6, a second fixing part 42 is provided on the cover component 30. The second fixing part 42 is formed by bending both ends of a quadrilateral frame component toward the side opposite to the housing 11.

[0060] The second fixing part 42 is arranged to surround the periphery of the terminal 21 when viewed from the axial direction. The second fixing part 42 is, for example, joined to the inner circumferential surface of the side wall portion 31 of the cover member 30 by welding.

[0061] A through hole 42a is formed on the second fixing part 42. The through hole 42a is formed at a position corresponding to the threaded hole 41a of the first fixing part 41. The shaft portion of the fastening bolt 51 passes through the through hole 42a. The second fixing part 42 is fastened to the first fixing part 41 by the fastening bolt 51.

[0062] Thus, the first fixing part 41 of the housing 11, the second fixing part 42 of the cover part 30, and the fastening bolt 51 are arranged in the internal space S of the cover part 30.

[0063] -Effects of the first implementation method-

[0064] According to the features of this embodiment, by arranging the first fixing part 41 of the housing 11 and the second fixing part 42 of the cover component 30 in the internal space S, the dustproof and waterproof properties of the first fixing part 41 and the second fixing part 42 can be ensured.

[0065] According to the features of this embodiment, by making the protruding length L1 of the first fixing part 41 smaller than the protruding length L2 of the terminal 21, it is possible to prevent the first fixing part 41 from becoming an obstacle.

[0066] According to the features of this embodiment, by providing a waterproof cable connector 38 at the cable insertion port 34, it is possible to prevent dust and water from entering the internal space S from the cable insertion port 34.

[0067] According to the features of this embodiment, by making the outer peripheral edge of the sealing member 45 protrude outward from the outer peripheral edge of the cover member 30 on the side closer to the housing 11, it is possible to suppress the accumulation of water between the housing 11 and the cover member 30.

[0068] According to the features of this embodiment, it is possible to suppress electro-corrosion between the housing 11 and the cover component 30, which are formed of metal materials of different materials.

[0069] According to the features of this embodiment, it is possible to suppress electro-corrosion between the surface of the aluminum-plated housing 11 and the cover component 30 formed of ferrous material.

[0070] According to the features of this embodiment, by removing the cover 35 from the side wall portion 31, it is possible to enter the internal space S through the opening in the side wall portion 31 for maintenance work. Furthermore, by providing a sealing portion 36 between the side wall portion 31 and the cover portion 35, it is possible to prevent dust and water from entering the internal space S.

[0071] According to the features of this embodiment, a refrigeration device 1 including a compressor 10 can be provided.

[0072] (Second Implementation)

[0073] Hereinafter, the same symbols will be used to mark the parts that are the same as in the first embodiment described above, and only the differences will be explained.

[0074] As shown in Figure 7, a first fixing part 41 is provided on the housing 11. The first fixing part 41 is composed of a spacer-like component protruding outward from the surface of the housing 11. The first fixing parts 41 are arranged at the four corners such that they surround the periphery of the terminal 21 when viewed axially from the terminal 21. The first fixing parts 41 are joined to the surface of the housing 11, for example, by welding. The first fixing parts 41 are arranged in the internal space S of the cover component 30. A threaded hole 41a is formed in the first fixing part 41. A second fixing part 42 is fastened to the first fixing part 41 by a fastening bolt 51.

[0075] Thus, the first fixing part 41 of the housing 11, the second fixing part 42 of the cover part 30, and the fastening bolt 51 are arranged in the internal space S of the cover part 30.

[0076] (Other implementation methods)

[0077] The embodiments and variations have been described above; however, it should be understood that various changes can be made to the manner and specific details without departing from the spirit and scope of the claims. Appropriate combinations or substitutions can also be made to the elements involved in the above embodiments, variations, and other embodiments. The terms "first," "second," "third," etc., in the specification and claims are only used to distinguish statements containing these terms and are not intended to limit the number or order of the statements.

[0078] -Industry Applicability-

[0079] In summary, this disclosure is of great use to compressors and refrigeration devices.

Claims

1. A compressor, characterized in that: The compressor includes a housing (11), a terminal block (21), a cover (30), a sealing member (45), a first fixing part (41), and a second fixing part (42). The terminal block (21) protrudes outward from the housing (11). The cover (30) covers the terminal block (21) in such a way that an internal space (S) is defined between the cover (30) and the housing (11). The sealing member (45) is arranged between the housing (11) and the cover (30). The first fixing part (41) is disposed on the housing (11) and arranged in the internal space (S) of the cover (30). The second fixing part (42) is disposed on the cover (30) and fixed to the first fixing part (41).

2. The compressor according to claim 1, characterized in that: The protruding length L1 of the first fixing part (41) protruding from the housing (11) and the protruding length L2 of the terminal (21) protruding from the housing (11) satisfy the condition L1 < L2.

3. The compressor according to claim 1 or 2, characterized in that: A cable insertion port (34) is formed on the cover component (30), and a cable waterproof connector (38) is provided at the cable insertion port (34).

4. The compressor according to claim 1 or 2, characterized in that: The outer periphery of the sealing member (45) protrudes outward from the outer periphery of the cover member (30) on the side of the housing (11).

5. The compressor according to claim 4, characterized in that: The cover component (30) is made of a metal material that is different from the metal material that forms the surface of the shell (11).

6. The compressor according to claim 5, characterized in that: The surface of the housing (11) is formed of a metal material sprayed with aluminum, and the cover component (30) is formed of an iron material.

7. The compressor according to claim 1 or 2, characterized in that: The cover component (30) includes a side wall portion (31), a cover portion (35) and a sealing portion (36). The side wall portion (31) is formed in a cylindrical shape and covers the periphery of the terminal block (21). The cover portion (35) opens and closes the opening on the side of the side wall portion (31) opposite to the housing (11). The sealing portion (36) is arranged between the side wall portion (31) and the cover portion (35).

8. A refrigeration device, characterized in that: The refrigeration device includes the compressor (10) as described in claim 1 or 2.

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