An overload protector, compressor and air conditioner

Abstract

The application provides an overload protector, a compressor and an air conditioner, and belongs to the technical field of compressors.The overload protector comprises a main body, an overload actuator and a plug for connecting with a motor lead wire are arranged on the main body, and the plug is electrically connected with the overload actuator.A sealing groove is arranged around the plug, and a base for connecting with the plug is arranged on the motor lead wire, and the base and the sealing groove are mutually sealed when the base is connected with the plug.The overload protector changes the exposed plug into a built-in structure, and the base of the motor lead wire and the sealing groove are mutually sealed when in use, so that the plug can be prevented from contacting with refrigerant, the leakage current of the compressor can be reduced, and the safety of the compressor is improved.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more particularly to an overload protector, a compressor, and an air conditioner. Background Technology

[0002] An overload protector is connected in series in the compressor circuit. When the compressor circuit current is too large or the compressor temperature is too high, the overload protector will disconnect, thus disconnecting the power circuit and protecting the compressor and electrical equipment.

[0003] As an essential component of the refrigeration system, the compressor's electrical safety directly impacts the safety of the entire air conditioning system, and the overload protector is a crucial component ensuring the compressor's electrical safety. Currently, the fins of existing compressor overload protectors are typically exposed. However, during normal use, after the air conditioner has been idle for a period of time, refrigerant from the evaporator and condenser flows into the compressor, causing the refrigerant level to rise. When the refrigerant level in the compressor becomes too high and submerges the fins of the overload protector, it can lead to excessive leakage current in the compressor, creating a safety hazard. Therefore, isolating the fins of the overload protector from contact with the refrigerant is of paramount importance for ensuring the safe operation of the compressor. Summary of the Invention

[0004] To overcome the problems existing in related technologies, one of the objectives of this invention is to provide an overload protector that replaces the exposed fins with an internal structure. By setting a sealing groove around the fins, the base of the motor lead wire and the sealing groove are sealed to each other during use, thus preventing the fins from contacting the refrigerant. This helps to reduce the leakage current of the compressor and improve the safety of the compressor.

[0005] An overload protector, comprising:

[0006] The main body is provided with an overload actuator and a plug for connecting to the motor lead wire, the plug being electrically connected to the overload actuator.

[0007] The insert has a sealing groove around its periphery, and the motor lead wire has a base for connecting with the insert. When the base is connected to the insert, the base and the sealing groove are sealed to each other.

[0008] In a preferred embodiment of the present invention, the sealing groove includes a first groove and a second groove, the first groove has an opening on one side, the second groove is disposed at the bottom of the first groove, and the insert is disposed in the second groove.

[0009] In a preferred embodiment of the present invention, the base includes a first base and a second base, wherein the shape of the first base is adapted to the shape of the first groove, and the shape of the second base is adapted to the shape of the second groove.

[0010] In a preferred embodiment of the present invention, the shape of the base is adapted to the shape of the sealing groove;

[0011] An auxiliary sealing part is provided at the connection between the first groove and the second groove. The auxiliary sealing part includes a raised step and a groove, and the raised step and the groove are connected to each other.

[0012] The convex step is disposed on the side wall of the first groove and protrudes toward the opening of the first groove, and the groove is disposed on the top of the second groove and recessed toward the bottom of the second groove.

[0013] In a preferred embodiment of the present invention, both the convex step and the groove have arc-shaped cross-sections, and the height h1 of the convex step is greater than the depth h2 of the groove.

[0014] In a preferred embodiment of the present invention, an elastic pressure block is provided at the opening of the sealing groove, and the elastic pressure block protrudes from the side wall of the sealing groove toward the center of the sealing groove; the base is provided with a pressure groove adapted to the elastic pressure block.

[0015] In a preferred embodiment of the present invention, the elastic block extends from the opening of the sealing groove into the interior of the sealing groove, and the protruding thickness of the elastic block on the side closer to the opening of the sealing groove is greater than the protruding thickness on the side farther from the opening of the sealing groove.

[0016] In a preferred embodiment of the present invention, the main body is further provided with a socket for connecting to the compressor, and the socket is electrically connected to the overload actuator.

[0017] A second objective of this invention is to provide a compressor that includes the overload protector described above.

[0018] A third objective of this invention is to provide an air conditioning system that includes the compressor described above.

[0019] The beneficial effects of this invention are as follows:

[0020] This invention provides an overload protector, a compressor, and an air conditioner. The overload protector includes a main body with an overload actuator and a connector for connecting to a motor lead wire. The connector is electrically connected to the overload actuator. After the connector is connected to the motor, the overload actuator protects the motor's operation. A sealing groove is provided around the connector, and a base is provided on the motor lead wire for connecting to the connector. When the base is connected to the connector, the base and the sealing groove are sealed together. This overload protector transforms the exposed connector into an internal structure through the sealing groove, and ensures a seal between the base of the motor lead wire and the sealing groove, effectively preventing the connector from contacting the refrigerant. Even if the refrigerant inside the compressor submerges the overload protector, the compressor's leakage current will not exceed the limit, thus ensuring the safe operation of the compressor. Attached Figure Description

[0021] Figure 1 This is a perspective view of the overload protector provided in Embodiment 1 of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the base and the sealing groove provided in Embodiment 1 of the present invention;

[0023] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0024] Figure 4 yes Figure 2 A magnified view of a section at point B in the middle;

[0025] Figure 5 This is a top view of the elastic pressure block and pressure groove provided by the present invention.

[0026] Figure label:

[0027] 100. Main body; 200. Overload actuator; 300. Insert plate; 400. Sealing groove; 410. First groove; 420. Second groove; 500. Insert sleeve; 600. Motor lead wire; 700. Base; 710. First base; 720. Second base; 800. Auxiliary sealing part; 810. Raised step; 820. Groove; 4101. Elastic pressure block; 7101. Pressure groove. Detailed Implementation

[0028] Preferred embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0029] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0030] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] Example 1:

[0032] like Figures 1-5 As shown, the present invention provides an overload protector, including a main body 100, an overload actuator 200 and a plug 300 for connecting to a motor lead wire 600, the plug 300 being electrically connected to the overload actuator 200.

[0033] The insert 300 is provided with a sealing groove 400 around its periphery, and the motor lead wire 600 is provided with a base 700 for connecting with the insert 300. When the base 700 is connected to the insert 300, the base 700 and the sealing groove 400 are mutually sealed.

[0034] The overload actuator 200 is electrically connected to the motor via a insert 300. This overload actuator 200 is existing technology and is mainly used to protect the compressor's circuitry. When the compressor's circuit current is too high or the compressor's temperature is too high, the overload actuator disconnects, breaking the compressor's circuit and thus protecting the compressor. The overload actuator 200 of this application works on a similar principle to existing overload protectors; therefore, its specific structure will not be described in detail here. In the overload actuator 200 protected in this application, the sealing groove 400 is a protruding structure on the main body 100 and can be integrally molded with the main body 100 via injection molding.

[0035] The aforementioned overload protector includes a main body 100, on which an overload actuator 200 and a connector 300 for connecting to a motor lead wire 600 are mounted. The connector 300 is electrically connected to the overload actuator 200. After the connector 300 is connected to the motor, the overload actuator 200 can protect the operation of the motor. A sealing groove 400 is provided around the connector 300, and a base 700 for connecting to the connector 300 is provided on the motor lead wire 600. When the base 700 is connected to the connector 300, the base 700 and the sealing groove 400 are mutually sealed. This overload protector transforms the exposed connector 300 into an internal structure through the sealing groove 400, and also ensures that the base 700 of the motor lead wire 600 and the sealing groove 400 are mutually sealed, thus isolating the connector 300 from contact with the refrigerant. Even if the refrigerant inside the compressor floods the overload protector, it will not cause the compressor's leakage current to exceed the limit, thus ensuring the compressor's safe operation.

[0036] In a more specific embodiment, the sealing groove 400 includes a first groove 410 and a second groove 420. The first groove 410 has an opening on one side, and the second groove 420 is disposed at the bottom of the first groove 410. The insert 300 is disposed in the second groove 420. The bottom of the insert 300 located in the second groove 420 is electrically connected to the overload actuator 200. The shape of the base 700 is adapted to the shape of the sealing groove 400. Furthermore, the base 700 includes a first base 710 and a second base 720, the first base 710 being adapted to the shape of the first groove 410, and the second base 720 being adapted to the shape of the second groove 420. When the base 700 is connected to the insert 300, the first base 710 is located in the second groove 420, and the second base 720 is located in the second groove 420. Moreover, the first base 710 and the side wall of the first groove 410 are interference fit, which makes it difficult for the refrigerant to enter the insert 300 through the gap between the first base 710 and the first groove 410, thus effectively preventing the insert 300 from contacting the refrigerant.

[0037] In a preferred embodiment, an elastic pressure block 4101 is provided at the opening of the sealing groove 400, the elastic pressure block 4101 protruding from the side wall of the sealing groove 400 toward the center of the sealing groove 400; the base 700 is provided with a pressure groove 7101 adapted to the elastic pressure block 4101. More specifically, the elastic pressure block 4101 extends from the opening of the sealing groove 400 toward the interior of the sealing groove 400, and the protruding thickness of the elastic pressure block 4101 on the side closer to the opening of the sealing groove 400 is greater than the protruding thickness on the side farther from the opening of the sealing groove 400.

[0038] The elastic pressure block 4101 can be made of rubber. The purpose of setting the elastic pressure block 4101 is to use the pressure of the elastic pressure block 4101 to make the fit between the base 700 and the sealing groove 400 tighter. The shape of the pressure groove 7101 is adapted to the shape of the elastic pressure block 4101, that is, the depth of the pressure groove 7101 is also gradually changing. The installation process of the base 700 is as follows: the pressure groove 7101 and the elastic pressure block 4101 are aligned, and then the base 700 is pressed into the sealing groove 400. Since the shape of the pressure groove 7101 corresponds to the shape of the elastic pressure block 4101, when the base 700 is fully pressed into the sealing groove 400, the elastic pressure block 4101 exerts a force on the base 700 toward the side of the second groove 420, which can ensure that the base 700 and the sealing groove 400 fit tightly.

[0039] Furthermore, the main body 100 is also provided with a socket 500 for connecting to the compressor, and the socket 500 is electrically connected to the overload actuator 200. This connection to the compressor via the socket 500 enables simultaneous overload control of both the motor and compressor circuits, ensuring the safe operation of the compressor.

[0040] The present invention also provides a compressor and an air conditioning system, the compressor including the overload protector as described above. The air conditioning system includes the compressor as described above.

[0041] This compressor operates stably and safely, and will not malfunction due to excessive leakage current. Air conditioning systems using this compressor operate stably and are highly safe.

[0042] Example 2:

[0043] like Figures 2-3 As shown, this embodiment only describes the differences from Embodiment 1, and the remaining technical features are the same as those in the above embodiment.

[0044] In this embodiment, the shape of the base 700 is adapted to the shape of the sealing groove 400;

[0045] An auxiliary sealing part 800 is provided at the connection between the first groove 410 and the second groove 420. The auxiliary sealing part 800 includes a protruding step 810 and a groove 820, and the protruding step 810 and the groove 820 are connected to each other.

[0046] The raised step 810 is disposed on the side wall of the first groove 410 and protrudes towards the opening of the first groove 410. The recess 820 is disposed on the top of the second groove 420 and recesses towards the bottom of the second groove 420. Furthermore, the cross-sections of both the raised step 810 and the recess 820 are arc-shaped, and the height h1 of the raised step 810 is greater than the depth h2 of the recess 820.

[0047] In this embodiment, an auxiliary sealing part 800 is added at the connection between the first groove 410 and the second groove 420. Furthermore, the height of the raised step 810 is greater than the depth of the groove 820. After the base 700 is fixed to the sealing groove 400, an "S"-shaped sealing structure is formed at the auxiliary sealing part 800. This structure increases the sealing performance between the base 700 and the sealing groove 400. Moreover, due to the large protrusion height of the raised step 810, a good sealing space is formed at the raised step 810, preventing refrigerant from entering the insert 300. This ensures the sealing effect of the sealing groove 400 on the insert 300.

[0048] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0049] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An overload protector, comprising a body (100), wherein the body (100) is provided with an overload actuator (200) and a connector (300) for connection with a motor lead wire (600), the connector (300) being electrically connected to the overload actuator (200), characterized in that: The insert (300) is provided with a sealing groove (400) around its periphery, and the motor lead wire (600) is provided with a base (700) for connecting with the insert (300). When the base (700) is connected to the insert (300), the base (700) and the sealing groove (400) are sealed to each other. The sealing groove (400) includes a first groove (410) and a second groove (420). The first groove (410) has an opening on one side, the second groove (420) is disposed at the bottom of the first groove (410), and the insert (300) is disposed in the second groove (420). The base (700) includes a first base (710) and a second base (720), wherein the shape of the first base (710) is adapted to the shape of the first groove (410), and the shape of the second base (720) is adapted to the shape of the second groove (420); The shape of the base (700) is adapted to the shape of the sealing groove (400); An auxiliary sealing part (800) is provided at the connection between the first groove (410) and the second groove (420). The auxiliary sealing part (800) includes a raised step (810) and a groove (820), and the raised step (810) and the groove (820) are connected to each other. The convex step (810) is provided on the side wall of the first groove (410) and protrudes toward the opening of the first groove (410). The groove (820) is provided on the top of the second groove (420) and is recessed toward the bottom of the second groove (420).

2. The overload protector according to claim 1, characterized in that: The cross-sections of the convex step (810) and the groove (820) are both arc-shaped, and the height h1 of the convex step (810) is greater than the depth h2 of the groove (820).

3. The overload protector according to any one of claims 1-2, characterized in that: An elastic pressure block (4101) is provided at the opening of the sealing groove (400), and the elastic pressure block (4101) protrudes from the side wall of the sealing groove (400) toward the middle of the sealing groove (400); a pressure groove (7101) adapted to the elastic pressure block (4101) is provided on the base (700).

4. An overload protector according to claim 3, characterized in that: The elastic block (4101) extends from the opening of the sealing groove (400) into the interior of the sealing groove (400), and the protruding thickness of the elastic block (4101) on the side closer to the opening of the sealing groove (400) is greater than the protruding thickness on the side farther from the opening of the sealing groove (400).

5. The overload protector according to any one of claims 1-2, characterized in that: The main body (100) is also provided with a socket (500) for connecting to the compressor, and the socket (500) is electrically connected to the overload actuator (200).

6. A compressor, characterized in that: Including the overload protector as described in any one of claims 1-5.

7. An air conditioning system, characterized in that: Includes the compressor as described in claim 6.

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