Linear compressor

Abstract

The present disclosure relates to the technical field of linear compressor, and particularly relates to a linear compressor. The linear compressor comprises a center body; a limiting component, the limiting component comprises a body part and a boss, the body part is connected with the center body, and a gas flow channel is arranged in the limiting component; and an inner return iron, the inner return iron comprises an inner return iron body and a pressing table part, the inner return iron body is in abutment with the center body on one side facing the limiting component, and the pressing table part is in abutment with the boss and an end of the center body respectively. In the linear compressor provided by the present disclosure, the gas flow channel is arranged in the limiting component, the gas communication between the piston and the center body is realized, the body part of the limiting component is matched with the end of the center body facing the piston, the pressing table part is located between the boss and the center body and is in abutment with the boss and the center body respectively, so that the gas communication between the piston and the center body is realized while the mass and volume of the inner return iron are reduced, the connection and positioning between the inner return iron and the center body are realized, and the stability of the installation of the inner return iron is ensured.

Description

Technical Field

[0001] This disclosure relates to the field of linear compressor technology, and more particularly to a linear compressor. Background Technology

[0002] In existing linear compressor technology, the piston's gas passage is mostly formed inside the inner return iron, creating a gas path connection with the central body. This structure is relatively compact, but the design of the gas flow channel and the fixation of the inner return iron can interfere with each other. To ensure the inner return iron is fixed and does not interfere with the gas flow channel, the inner return iron usually needs to be provided with an additional inner return iron part connected to the central body, resulting in a larger volume and mass of the inner return iron.

[0003] Therefore, how to achieve gas communication between the piston and the central body while reducing the mass and volume of the inner return iron is a technical problem that needs to be optimized by those skilled in the art. Summary of the Invention

[0004] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this disclosure provides a linear compressor.

[0005] This disclosure provides a linear compressor, comprising:

[0006] A central body, wherein a working fluid channel is formed within the central body;

[0007] A limiting component, the limiting component including a body and a boss disposed at one end of the body, the end of the body away from the boss being connected to the end of the central body facing the piston, and a gas flow channel communicating with the working fluid channel being provided inside the limiting component.

[0008] The inner return iron includes an inner return iron body and a pressure plate. The inner return iron body abuts against the center body on the side facing the limiting member. The pressure plate is located between the boss and the end of the center body, and abuts against the boss and the end of the center body respectively.

[0009] In the linear compressor disclosed herein, a gas flow channel is provided in the limiting component, enabling gas communication between the piston and the central body. The inner return iron includes an inner return iron body and a pressure plate portion. The limiting component includes a body portion and a boss. The body portion of the limiting component mates with the end of the central body facing the piston, allowing the distance between the boss and the central body to be adjustable. The pressure plate portion of the inner return iron is then placed in the space between the boss and the central body of the limiting component, and the distance between the boss and the end of the central body is adjusted so that the pressure plate portion abuts against both the boss and the end of the central body. This achieves gas communication between the piston and the central body while reducing the mass and volume of the inner return iron. Furthermore, the connection and positioning between the inner return iron and the central body are achieved through the cooperation of the limiting component and the central body, ensuring the stability of the inner return iron installation.

[0010] Optionally, the limiting component is threadedly engaged with the central body.

[0011] Optionally, the end of the central body is provided with an internal thread, and the body of the limiting member engages with the internal thread.

[0012] Optionally, the boss has a first through hole and the body has a second through hole, wherein the diameter of the first through hole is larger than the diameter of the second through hole.

[0013] Optionally, the first through hole has a screw-fit structure.

[0014] Optionally, the first through hole has a regular hexagonal structure.

[0015] Optionally, the opening of the first through hole of the boss is chamfered.

[0016] Optionally, it also includes an outer return iron, which includes an outer return iron body and a connecting part for connecting the outer return iron body and the central body, the connecting part being disposed between the magnet assembly and the central body.

[0017] Optionally, the outer return iron is threadedly connected to the central body, and a countersunk hole is provided on the side of the connection portion away from the central body.

[0018] Optionally, the magnet assembly abuts against the connecting portion.

[0019] Optionally, along the direction from the outer return iron to the inner return iron, the size of the connecting portion is not greater than the size of the magnet assembly. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0021] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the linear compressor described in an embodiment of this disclosure;

[0023] Figure 2 This is a schematic diagram of a limiting component according to an embodiment of the present disclosure;

[0024] Figure 3 This is a schematic diagram of another limiting component described in an embodiment of this disclosure.

[0025] Wherein, 1-Central body; 2-Limiting component; 21-Main body; 22-Boss; 23-First through hole; 24-Second through hole; 3-Inner return iron; 31-Inner return iron body; 32-Pressure platform; 4-Outer return iron; 41-Outer return iron body; 42-Connecting part; 43-Counterhead. Detailed Implementation

[0026] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0027] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0028] Figure 1 This is a schematic diagram of the structure of the linear compressor described in an embodiment of this disclosure. Figure 1 As shown, this disclosure provides a linear compressor, including:

[0029] Central body 1, with a working fluid channel formed inside central body 1;

[0030] The limiting component 2 includes a body part 21 and a boss 22 provided at one end of the body part 21. The end of the body part 21 away from the boss 22 is connected to the end of the center body 1 facing the piston. The limiting component 2 is provided with a gas flow channel communicating with the working fluid channel.

[0031] The inner return iron 3 includes an inner return iron body 31 and a pressure plate 32. The inner return iron body 31 abuts against the center body 1 on the side facing the limiting member 2. The pressure plate 32 is located between the boss 22 and the end of the center body 1, and abuts against the boss 22 and the end of the center body 1 respectively.

[0032] In the linear compressor provided in this embodiment, a gas flow channel is provided in the limiting component 2 to achieve gas communication between the piston and the central body 1. The inner return iron 3 includes an inner return iron body 31 and a pressure plate portion 32. The limiting component 2 includes a body portion 21 and a boss 22. The body portion 21 of the limiting component 2 cooperates with the end of the central body 1 facing the piston, so that the distance between the boss 22 and the central body 1 is adjustable. Then, the pressure plate portion 32 in the inner return iron 3 is placed in the space between the boss 22 of the limiting component 2 and the central body 1, and the distance between the boss 22 and the end of the central body 1 is adjusted so that the pressure plate portion 32 abuts against the boss 22 and the end of the central body 1 respectively. This reduces the mass and volume of the inner return iron 3 while achieving gas communication between the piston and the central body 1. Furthermore, the connection and positioning between the inner return iron 3 and the central body 1 are achieved through the cooperation of the limiting component 2 and the central body 1, ensuring the stability of the inner return iron 3 installation.

[0033] In some embodiments, the limiting component 2 is threadedly engaged with the central body 1.

[0034] Specifically, the end of the center body 1 is provided with an internal thread, and the body part 21 of the limiting component 2 is engaged with the internal thread.

[0035] The aforementioned central body 1 is provided with a ventilation channel, and an internal thread is provided on the inner wall of the ventilation channel for the connection of the body 21 of the limiting component 2 to the central body 1. Furthermore, to prevent the diameter of the ventilation pipe located within the central body 1 from decreasing after the installation of the limiting component 2, a diameter-enlarged section is provided at the end of the central body 1 to accommodate the portion of the limiting component 2 that mates with the central body 1. This ensures that the diameter of the ventilation channel of the central body 1 remains unchanged after the limiting component 2 is threadedly connected to the central body 1, thus guaranteeing good ventilation performance of the ventilation channel.

[0036] In some embodiments, a first through hole 23 is provided in the boss 22, and a second through hole 24 is provided in the body portion 21. The first through hole 23 and the second through hole 24 communicate with each other, and the diameter of the first through hole 23 is larger than the diameter of the second through hole 24. That is, the gas flow channel includes the first through hole 23 and the second through hole 24.

[0037] By providing a first through hole 23 in the protrusion and a second through hole 24 in the body 21, the limiting member 2 is connected to the working fluid channel.

[0038] Furthermore, by setting the diameter of the first through hole 23 to be larger than the diameter of the second through hole 24, the ventilation path gradually narrows as gas enters the ventilation pipe inside the central body 1 through external equipment, thereby gradually increasing the gas pressure. This avoids sudden changes in gas pressure caused by abrupt changes in the ventilation path, which would result in excessive gas pressure at the end of the central body 1. In other words, setting the diameter of the first through hole 23 to be larger than the diameter of the second through hole 24 provides protection for the central body 1.

[0039] Specifically, the first through hole 23 has a screw-fit structure.

[0040] By setting the diameter of the first through hole 23 to be larger than the diameter of the second through hole 24, a stepped portion is formed at the connection position of the first through hole 23 and the second through hole 24. When the limiting component 2 and the center body 1 are screwed, the screwing tool acts on the first through hole 23, and the end of the screwing tool abuts against the end face of the stepped portion, so that the operator can apply screwing force. In order to facilitate the cooperation between the first through hole 23 and the screwing tool, the first through hole 23 is set as a screwing fit structure that matches the shape of the screwing tool.

[0041] Figure 2 This is a schematic diagram of a limiting component 2 according to an embodiment of the present disclosure. Figure 3 This is a schematic diagram of another limiting component 2 described in an embodiment of this disclosure. Figures 2 to 3 As shown, specifically, the first through hole 23 can be a regular hexagonal structure, but is not limited to this. The first through hole 23 can also be a square structure, a polygonal structure, an elliptical structure, or other non-circular structures. As long as it can cooperate with the screwing structure to rotate the shape of the limiting component 2, it is within the protection scope of this application.

[0042] In some embodiments, the opening of the first through hole 23 of the boss 22 is provided with a chamfer, that is, the end of the boss 22 away from the central body 1 is provided with a chamfer.

[0043] By setting a chamfer at the opening of the first through hole 23 of the boss 22, the chamfer can guide the flow of gas into the first through hole 23.

[0044] In some embodiments, an outer return iron 4 is also included. The outer return iron 4 includes an outer return iron body 41 and a connecting portion 42 for connecting the outer return iron body 41 and the central body 1. The connecting portion 42 is disposed between the magnet assembly and the central body 1.

[0045] The aforementioned outer return iron 4 includes an outer return iron body 41 and a connecting part 42, which realizes the connection between the outer return iron 4 and the central body 1, thereby realizing the positioning of the outer return iron 4 and ensuring the stability of the assembly of the outer return iron 4.

[0046] Specifically, the outer return iron 4 can be integrated with the inner return iron 3 or it can be a separate structure.

[0047] In some embodiments, the outer return iron 4 is threadedly connected to the central body 1, and a countersunk hole 43 is provided on the side of the connection part 42 away from the central body 1.

[0048] In other words, the outer return iron 4 is connected to the central body 1 by screws. Specifically, the screw passes through the connecting part 42 and is threaded into the central body 1. To avoid the screw head occupying the space on the side of the connecting part 42 away from the central body 1 and affecting the assembly of the magnet assembly, a countersunk hole 43 for accommodating the screw head is provided on the connecting part 42. Furthermore, after the screw is connected to the central body 1, the top surface of the screw does not protrude from the countersunk hole 43, thereby ensuring the installation of the magnet assembly.

[0049] Specifically, during the assembly of the magnet assembly, the magnet assembly abuts against the connecting part 42. When interference occurs between the magnet assembly and the connecting part 42 between the outer return iron 4 and the inner return iron 3, it indicates that the magnet assembly has been installed in the preset position, thereby simplifying the installation of the magnet assembly.

[0050] When the outer return iron 4 and the inner return iron 3 are separate structures, the size of the connecting part 42 in the direction from the outer return iron 4 to the inner return iron 3 is not greater than the size of the magnet assembly.

[0051] By setting the size of the connecting part 42 to be no larger than the size of the magnet assembly, it is easy to determine whether the magnet assembly is installed in the preset position. Furthermore, the connecting part 42 can be connected to the center body 1 to realize the connection between the outer return iron 4 and the center body 1.

[0052] Furthermore, the portion connecting the connecting part 42 to the inner return iron 3 is eliminated, reducing the volume of the connecting part 42, thereby effectively reducing the weight of the connecting part 42, reducing the total weight of the return iron, and lowering the cost of the return iron.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0054] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A linear compressor, characterized in that, include: A central body (1) has a working fluid channel formed inside it; The limiting component (2) includes a body part (21) and a boss (22) disposed at one end of the body part (21). The end of the body part (21) away from the boss (22) is connected to the end of the center body (1) facing the piston. The limiting component (2) is provided with a gas flow channel communicating with the working fluid channel. The gas flow channel includes a first through hole (23) and a second through hole (24). The first through hole (23) is disposed in the boss (22), and the second through hole (24) is disposed in the body part (21). The diameter of the first through hole (23) is larger than the diameter of the second through hole (24). The inner return iron (3) includes an inner return iron body (31) and a pressure plate (32). The inner return iron body (31) abuts against the center body (1) on the side facing the limiting member (2). The pressure plate (32) is located between the boss (22) and the end of the center body (1), and abuts against the end of the boss (22) and the end of the center body (1) respectively.

2. The linear compressor according to claim 1, characterized in that, The limiting component (2) is threadedly engaged with the central body (1).

3. The linear compressor according to claim 2, characterized in that, The end of the central body (1) is provided with an internal thread, and the body part (21) of the limiting component (2) is engaged with the internal thread.

4. The linear compressor according to claim 1, characterized in that, The first through hole (23) is a screw-fit structure.

5. The linear compressor according to claim 4, characterized in that, The first through hole (23) has a regular hexagonal structure.

6. The linear compressor according to claim 1, characterized in that, The opening of the first through hole (23) of the boss (22) is chamfered.

7. The linear compressor according to claim 1, characterized in that, It also includes an outer return iron (4), which includes an outer return iron body (41) and a connecting part (42) for connecting the outer return iron body (41) and the central body (1), and the connecting part (42) is disposed between the magnet assembly and the central body (1).

8. The linear compressor according to claim 7, characterized in that, The outer return iron (4) is threadedly connected to the central body (1), and the connecting part (42) is provided with a countersunk hole (43) on the side away from the central body.

9. The linear compressor according to claim 8, characterized in that, The magnet assembly abuts against the connecting part (42).

10. The linear compressor according to claim 7, characterized in that, Along the direction from the outer return iron (4) to the inner return iron (3), the size of the connecting part (42) is not greater than the size of the magnet assembly.

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