Pressure relief structure, compressor and refrigerator

Abstract

The utility model relates to the technical field of refrigerators, and discloses a pressure relief structure, a compressor and a refrigerator. The pressure relief structure comprises a cylinder body, a compression cavity is formed in the cylinder body, the pressure relief structure further comprises a sealing piece, a pressure relief hole is formed in the cylinder body, the pressure relief hole communicates with the compression cavity, the sealing piece covers the pressure relief hole, and the sealing piece is used for blocking the pressure relief hole; and the telescopic piece is connected with the cylinder body and the sealing piece, and the sealing piece is used for driving the sealing piece to move so as to enable the pressure relief hole to communicate with the outside when the cylinder body is heated to a preset temperature and driving the sealing piece to block the pressure relief hole when the cylinder body is cooled to the preset temperature. According to the pressure relief structure, when the compressor needs to be immediately started again after stopping working, the telescopic piece can drive the sealing piece to move so that the pressure relief hole can communicate with the outside, and therefore the pressure of the high-pressure side of the cylinder body can be rapidly reduced, and then a rotor in the compressor can normally rotate; the problem that the compressor is difficult to start again immediately after stopping working is solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of refrigerators, and particularly relates to a pressure relief structure, a compressor and a refrigerator. BACKGROUND

[0002] If the compressor is started again immediately after the fixed-frequency compressor stops working, the pressure difference between the high-pressure side and the low-pressure side inside the cylinder body of the compressor is large, which not only makes the rotor in the compressor difficult to rotate and the compressor difficult to compress the working medium, but also makes the temperature of the coil on the rotor rise rapidly, so that the compressor has the risk of being burned out.

[0003] Therefore, it is necessary to improve the prior art.

[0004] The above information is given as background information only to assist with an understanding of the present disclosure, and should not be taken as an acknowledgement or admission that any of the above form part of the prior art with respect to the present disclosure. SUMMARY

[0005] The embodiments of the present application provide a pressure relief structure, a compressor and a refrigerator to solve the problem that the compressor is difficult to start again immediately after stopping working.

[0006] In a first aspect, the embodiments of the present application provide a pressure relief structure, comprising a cylinder body, wherein a compression cavity is formed in the cylinder body, and further comprising:

[0007] a sealing member, wherein a pressure relief hole is formed in the cylinder body, the pressure relief hole is in communication with the compression cavity, the sealing member covers the pressure relief hole, and the sealing member is used to block the pressure relief hole;

[0008] a telescopic member, wherein the telescopic member is connected to the cylinder body and the sealing member, the sealing member is used to drive the sealing member to move to make the pressure relief hole in communication with the outside when the cylinder body rises to a predetermined temperature, and the sealing member is used to drive the sealing member to block the pressure relief hole when the cylinder body falls to the predetermined temperature.

[0009] In a possible implementation, the telescopic member comprises a thermal expansion member, a receiving groove is formed in the sealing member and / or the cylinder body, the thermal expansion member is accommodated in the receiving groove, and the thermal expansion member is connected to the cylinder body and the sealing member.

[0010] In a possible implementation, the telescopic member comprises a spring, the spring is connected to the sealing member and the cylinder body, and the spring is used to drive the sealing member to cover the pressure relief hole.

[0011] In a possible implementation, a receiving groove is formed in the cylinder body, the pressure relief hole is in communication with the receiving groove, one end of the spring is fixedly connected to the sealing member, and the other end of the spring is fixedly connected to the groove bottom of the receiving groove.

[0012] In a possible implementation, the sealing member comprises a sealing cover and a sealing ring, the sealing ring is arranged on the side of the sealing member close to the cylinder body, and the cylinder body is provided with a sealing groove matched with the sealing ring.

[0013] In a possible implementation, the sealing ring is provided with a pressure relief hole, when the sealing member blocks the pressure relief hole, the sealing ring is arranged in the sealing groove, and the groove wall of the sealing groove blocks the pressure relief hole.

[0014] In a possible implementation, the telescopic member comprises a thermal expansion ring, the thermal expansion ring is arranged in the sealing groove, and the thermal expansion ring abuts against the sealing ring.

[0015] In a possible implementation, the size of the pressure relief hole gradually increases along the radial direction of the sealing ring.

[0016] In the second aspect, the embodiments of the present application further provide a compressor, the compressor comprising the pressure relief structure according to any one of the above.

[0017] In the third aspect, the embodiments of the present application further provide a refrigerator, the refrigerator comprising the compressor according to the above.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] The pressure relief structure provided by the embodiments of the present application can drive the sealing member to move to make the pressure relief hole communicate with the outside when the compressor needs to be started again immediately after stopping working, so that the pressure on the high-pressure side of the cylinder body is rapidly reduced, and then the rotor in the compressor can rotate normally; after the rotor rotates normally, the temperature in the compressor gradually decreases, the telescopic member drives the sealing member to block the pressure relief hole, so that the compressor can normally compress; in this process, the high pressure inside the cylinder body of the compressor is immediately released, so that the rotor in the compressor can quickly recover rotation, and the problem that the compressor is difficult to start again immediately after stopping working is solved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] In order to more completely understand the present application and its beneficial effects, the following will be described with reference to the drawings. In the following description, the same reference numerals represent the same parts.

[0022] Figure 1A structural schematic view of the pressure relief structure provided in the embodiments of the present application.

[0023] Figure 2 A sectional view of the pressure relief structure provided in the embodiments of the present application.

[0024] In the figure: 1, cylinder; 11, pressure relief hole; 12, sealing groove; 13, accommodating groove; 2, sealing member; 21, sealing cover; 22, sealing ring; 221, pressure relief hole; 3, telescopic member; 31, thermal expansion member; 32, spring. DETAILED DESCRIPTION

[0025] To make the possible application scenarios, technical principles, specific schemes that can be implemented, purposes and effects that can be achieved of the present application clear, the following will be described in detail in combination with the specific embodiments listed and the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical schemes of the present application, and therefore only serve as examples, and cannot be used to limit the protection scope of the present application.

[0026] In the description of the present application, the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features.

[0027] The technical schemes in the embodiments of the present application will be described clearly and completely in combination with the accompanying drawings in the embodiments of the present application.

[0028] The pressure relief structure, compressor and refrigerator provided in the embodiments of the present application are provided to solve the problem that it is difficult to immediately restart the compressor after the compressor stops working. The following will be described in combination with the accompanying drawings.

[0029] Please refer to Figure 1 and Figure 2 The embodiments of the present application provide a pressure relief structure, which comprises a cylinder 1, a sealing member 2 and a telescopic member 3. The cylinder 1 is provided with a compression cavity. The cylinder 1 is provided with a pressure relief hole 11, which is in communication with the compression cavity. The sealing member 2 covers the pressure relief hole 11 and is used to block the pressure relief hole 11. The telescopic member 3 connects the cylinder 1 and the sealing member 2. The sealing member 2 is used to drive the sealing member 2 to move to make the pressure relief hole 11 communicate with the outside when the cylinder 1 is raised to a predetermined temperature, and to drive the sealing member 2 to block the pressure relief hole 11 when the cylinder 1 is lowered to the predetermined temperature.

[0030] When the compressor needs to be started again immediately after stopping, the temperature in the compressor rises rapidly, the telescopic part 3 drives the sealing part 2 to move to make the pressure relief hole 11 communicate with the outside, so that the pressure on the high-pressure side of the cylinder 1 rapidly decreases, and then the rotor in the compressor can rotate normally; after the rotor rotates normally, the temperature in the compressor gradually decreases, the telescopic part 3 drives the sealing part 2 to block the pressure relief hole 11, so that the compressor can normally compress; in this process, the high-pressure side inside the cylinder 1 of the compressor is immediately relieved, so that the rotor in the compressor can quickly recover rotation, and the problem that the compressor is difficult to start again immediately after stopping is solved.

[0031] Please refer to Figure 1 and Figure 2 , the sealing part 2 includes a sealing cover 21 and a sealing ring 22, the sealing cover 21 is disc-shaped, and the sealing ring 22 is ring-shaped, the sealing ring 22 is integrally formed on the side of the sealing part 2 close to the cylinder 1, and at least one pressure relief hole 221 for discharging pressure is formed in the sealing ring 22; when the pressure relief hole 221 communicates with the pressure relief hole 11, the compression chamber can communicate with the outside through the pressure relief hole 221 and the pressure relief hole 11 to realize pressure relief on the high-pressure side in the compression chamber. The cylinder 1 is provided with a sealing groove 12 matched with the sealing ring 22, when the sealing part 2 blocks the pressure relief hole 11, the sealing ring 22 is placed in the sealing groove 12, and the groove wall of the sealing groove 12 blocks the pressure relief hole 221, so as to improve the sealing performance of the compression chamber during normal operation of the compressor.

[0032] In the embodiment, the pressure relief hole 221 is a circular hole, and the diameter of the pressure relief hole 221 remains unchanged along the direction in which the pressure relief hole 221 is formed. In some embodiments of the present application, the diameter of the pressure relief hole 221 gradually increases along the radial direction of the sealing ring 22, so that the pressure relief hole 221 is horn-shaped, and the flow rate of the high-pressure gas suddenly decreases after passing through the pressure relief hole 221, thereby reducing the influence of the discharged high-pressure gas on other equipment.

[0033] Please refer to Figure 1 and Figure 2 , the telescopic part 3 includes a thermal expansion part 31 and a spring 32, the thermal expansion part 31 is made of a material that expands when heated, and in the embodiment, the thermal expansion part 31 is ring-shaped, and the diameter of the thermal expansion part 31 is the same as that of the sealing ring 22. The thermal expansion part 31 is accommodated in the sealing groove 12, one side of the thermal expansion part 31 abuts against the groove bottom of the sealing groove 12, and the other side abuts against the sealing ring 22. After the thermal expansion part 31 is heated, the thermal expansion part 31 pushes the sealing ring 22 to move away from the cylinder 1, so that the pressure relief hole 221 is exposed from the sealing groove 12, thereby realizing the communication between the compression chamber and the outside.

[0034] In some embodiments of the present application, the thermal expansion piece 31 is provided in a block shape, the sealing piece 2 or the cylinder body 1 is provided with a containing groove 13, the thermal expansion piece 31 is contained in the containing groove 13, and the thermal expansion piece 31 connects the cylinder body 1 and the sealing piece 2. The thermal expansion piece 31 directly pushes the sealing cover 21 to move after being heated, so that the pressure relief hole 221 is exposed from the sealing groove 12, thereby realizing the communication between the compression cavity and the outside.

[0035] Please refer to Figure 1 and Figure 2 The cylinder body 1 is provided with a containing groove 13, the pressure relief hole 11 is communicated with the containing groove 13, one end of the spring 32 is fixedly connected with the sealing cover 21, and the other end is fixedly connected with the groove bottom of the containing groove 13. The spring 32 is beneficial to provide the force required by the sealing cover 21 to seal the pressure relief hole 11, thereby being beneficial to maintaining the sealing property of the cylinder body 1 in the normal working state.

[0036] The present application also provides a compressor comprising the pressure relief structure as described above. Since the compressor has the pressure relief structure as described above, it has at least part or all of the beneficial effects of the pressure relief structure, which will not be repeated here.

[0037] The present application also provides a refrigerator comprising the compressor as described above. Since the refrigerator has the compressor as described above, it has at least part or all of the beneficial effects of the compressor, which will not be repeated here. In the above embodiments, the description of each embodiment is focused on, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0038] Finally, it needs to be pointed out that although the above embodiments have been described in the specification and drawings of the present application, the patent protection scope of the present application should not be limited. Any technical solution obtained by replacing or modifying the equivalent structure or equivalent flow based on the essential concept of the present application, using the content described in the specification and drawings of the present application, and directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, etc., are all included in the patent protection scope of the present application.

Claims

1. A pressure relief structure comprising a cylinder (1) in which a compression chamber is formed, characterized by, Also included are: A sealing member (2) is provided on the cylinder (1) and covers the pressure relief hole (11), and the sealing member (2) is used to block the pressure relief hole (11); The telescopic member (3) is connected to the cylinder (1) and the sealing member (2), and the sealing member (2) is used to drive the sealing member (2) to move to make the pressure relief hole (11) communicate with the outside when the cylinder (1) is raised to a predetermined temperature, and to block the pressure relief hole (11) when the cylinder (1) is lowered to a predetermined temperature.

2. The pressure relief structure of claim 1, wherein, The telescopic member (3) includes a thermal expansion member (31), and the sealing member (2) and / or the cylinder (1) is provided with a receiving groove (13), and the thermal expansion member (31) is received in the receiving groove (13), and the thermal expansion member (31) is connected to the cylinder (1) and the sealing member (2).

3. The pressure relief structure of claim 1, wherein, The telescopic member (3) includes a spring (32), and the spring (32) is connected to the sealing member (2) and the cylinder (1), and the spring (32) is used to drive the sealing member (2) to cover the pressure relief hole (11).

4. The pressure relief structure of claim 3, wherein, The cylinder (1) is provided with a receiving groove (13), and the pressure relief hole (11) communicates with the receiving groove (13), and one end of the spring (32) is fixedly connected to the sealing member (2), and the other end is fixedly connected to the groove bottom of the receiving groove (13).

5. The pressure relief structure of claim 1, wherein, The sealing member (2) includes a sealing cover (21) and a sealing ring (22), and the sealing ring (22) is arranged on the side of the sealing member (2) close to the cylinder (1), and the cylinder (1) is provided with a sealing groove (12) matched with the sealing ring (22).

6. The pressure relief structure of claim 5, wherein, The sealing ring (22) is provided with a pressure relief hole (221), and when the sealing member (2) blocks the pressure relief hole (11), the sealing ring (22) is placed in the sealing groove (12), and the groove wall of the sealing groove (12) blocks the pressure relief hole (221).

7. The pressure relief structure of claim 6, wherein, The telescopic member (3) includes a thermal expansion ring, and the thermal expansion ring is arranged in the sealing groove (12), and the thermal expansion ring abuts against the sealing ring (22).

8. The pressure relief structure of claim 6, wherein, The size of the pressure relief hole (221) gradually increases along the radial direction of the sealing ring (22).

9. A compressor characterized by, The compressor includes the pressure relief structure according to any one of claims 1-8.

10. A refrigerator characterized by comprising: The refrigerator includes the compressor according to claim 9.

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