Liquid storage device without filter screen and compressor

Abstract

The utility model relates to a liquid storage device without a filter screen. The liquid storage device comprises a cylinder body (1), an air inlet pipe (2), an air outlet pipe (3), an inner pipe (4) and a partition plate (5), an air inlet pipe (2) is arranged at the top of the barrel (1), an air outlet pipe (3) is arranged at the bottom of the barrel (1), the inner pipe (4) is arranged in the barrel (1) and communicated with the air outlet pipe (3), and the partition plate (5) is arranged in the barrel (1) and located on the outer side of the inner pipe (4); the inner pipe (4) is of a Y-shaped structure, and the distance H between an opening in the top of the inner pipe (4) and the wall face, corresponding to the opening, of the cylinder body (1) is smaller than or equal to 10 mm. Compared with the prior art, liquid refrigerants and foreign matters can be prevented from entering the compressor through the inner pipe, the effective volume of the liquid accumulator is increased, and the performance of the compressor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary compressors, in particular to a filterless liquid accumulator and a compressor. Background Art

[0002] A compressor is a fluid machine that raises low-pressure gas to high-pressure gas. It is the heart of a refrigeration system. By sucking in low-temperature and low-pressure refrigerant gas from the suction pipe and using the operation of the motor to drive the piston to compress the low-temperature and low-pressure refrigerant gas, and then discharging the high-temperature and high-pressure refrigerant gas to the exhaust pipe, thus providing power for the refrigeration cycle. Existing rotary compressors usually have a suction liquid accumulator on the suction side to separate the liquid refrigerant and gaseous refrigerant sucked in from the refrigeration system, preventing liquid refrigerant from entering the cylinder during the operation of the compressor and causing liquid compression.

[0003] The current liquid accumulator structure mostly includes an inlet pipe, a cylinder body, a filter screen, a partition plate, an inner pipe and an outlet pipe structure. The refrigerant enters the cylinder body from the inlet pipe, passes through the filter screen, and reaches the cylinder body. The inner pipe is installed below the filter screen, and the air flow flows out from the inner pipe and reaches the inside of the compressor through the outlet pipe. The filter screen plays a role in filtering foreign objects and preventing liquid refrigerant from entering the inside of the compressor. In the current liquid accumulator structure, the openings of the inner pipe are all upward, and the filter screen needs to play the role of a baffle to guide the liquid refrigerant from all around, so as to avoid entering the inner pipe and causing liquid accumulation. However, the existence of the filter screen occupies the internal space of the liquid accumulator and easily increases the flow loss of the refrigerant, which will reduce the performance of the compressor. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a filterless liquid accumulator and a compressor.

[0005] The purpose of the utility model can be realized by the following technical solutions: A filterless liquid accumulator includes a cylinder body, an inlet pipe, an outlet pipe, an inner pipe and a partition plate;

[0006] The inlet pipe is arranged at the top of the cylinder body, the outlet pipe is arranged at the bottom of the cylinder body, the inner pipe is arranged inside the cylinder body and is communicated with the outlet pipe, and the partition plate is arranged inside the cylinder body and is located outside the inner pipe;

[0007] The inner pipe is in a Y-shaped structure, and the distance H between the top opening of the inner pipe and the corresponding wall surface of the cylinder body is H≤10mm.

[0008] Preferably, the top opening of the inner pipe is parallel to the corresponding wall surface of the cylinder body.

[0009] Preferably, the distance H between the top opening of the inner pipe and the corresponding wall surface of the cylinder body is H≥1mm.

[0010] In the utility model, the wall surface of the cylinder body corresponding to the top opening of the inner pipe refers to the inner wall of the cylinder body facing the top opening of the inner pipe, and H is the straight-line distance between the two.

[0011] Preferably, the wall surface of the cylinder corresponding to the top opening of the inner tube is located on the upper end surface of the cylinder.

[0012] Preferably, the inner tube includes an upper branch pipe and a lower main pipe, and two symmetrically arranged upper branch pipes are connected to the upper end of the lower main pipe.

[0013] More preferably, the top openings of the two upper branch pipes are staggered from the intake pipe in the horizontal direction.

[0014] More preferably, the upper branch pipes are straight pipes, and the included angle between the axes of the two upper branch pipes is 30° to 150°.

[0015] Even more preferably, the upper branch pipes are both straight pipes, and the included angle between the axes of the two upper branch pipes is 30° to 60°.

[0016] More preferably, the upper branch pipes are pipes with a bent structure, including a lower end part and an upper end part connected at an angle, the upper end part is vertically arranged, and the included angle between the axes of the lower end parts of the two upper branch pipes is 90° to 150°.

[0017] More preferably, the lower main pipe is a straight pipe, is coaxially arranged with the intake pipe and the cylinder, and the two upper branch pipes are symmetric about the axis of the lower main pipe.

[0018] More preferably, an oil return hole is provided on the lower main pipe.

[0019] More preferably, the upper branch pipe and the lower main pipe are of an integral structure or a split structure.

[0020] More preferably, the upper branch pipe is located above the partition, and the lower main pipe passes through the partition.

[0021] Preferably, at least one partition is provided in the cylinder at intervals in the height direction, and the partition is provided with a through hole for the inner tube to pass through and a through hole for the liquid refrigerant to pass through.

[0022] The present utility model also provides a compressor, including the above-mentioned filterless liquid storage device.

[0023] Compared with the prior art, the present utility model has the following beneficial effects:

[0024] 1. The Y-shaped structure inner tube of the present utility model doubles the intake flow area, increases the effective volume, and can improve the performance of the compressor;

[0025] 2. The present utility model is based on the analysis of the fluid velocity field inside the liquid storage device. By designing the distance between the top opening of the inner tube and the upper end face of the liquid storage device, the air flow is in a swirling state at the inclined plane. A reasonable distance design can prevent the liquid refrigerant from entering without affecting the suction efficiency.

[0026] 3. Through the Y-shaped structure design of the inner tube and the parallel design of its top opening and the upper end face of the cylinder body, the present utility model can prevent the liquid refrigerant and foreign objects from entering the compressor through the inner tube without a filter screen.

[0027] 4. Based on the analysis of the fluid velocity field inside the liquid storage device, the present utility model prevents the liquid refrigerant from splashing into the compressor through the parallel design of the inner tube nozzle and the upper end face of the cylinder body.

[0028] 5. The filter screen-free design of the present utility model can avoid the filter screen occupying the internal space of the liquid storage device, improve the effective volume of the liquid storage device, reduce the flow loss of the refrigerant, and improve the performance of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of the liquid storage device of Embodiment 1;

[0030] Figure 2 It is a schematic structural diagram of the liquid storage device of Embodiment 3;

[0031] Figure 3 It is a schematic structural diagram of the liquid storage device of Embodiment 4;

[0032] Figure 4 It is a schematic structural diagram of the liquid storage device of Comparative Example 1;

[0033] In the figure: 1 - cylinder body, 2 - intake pipe, 3 - outlet pipe, 4 - inner tube, 41 - upper branch pipe, 42 - lower main pipe, 5 - partition board, 6 - filter screen. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The present utility model will be described in detail below with reference to the drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present utility model, and the detailed implementation manners and specific operation processes are given, but the protection scope of the present utility model is not limited to the following embodiments.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0036] Some embodiments of the present utility model will be described in detail below with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0037] Embodiment 1

[0038] A filterless liquid reservoir, such as Figure 1 shown, includes a cylinder body 1, an intake pipe 2, an outlet pipe 3, an inner pipe 4 and a partition 5.

[0039] Among them, the top of the cylinder body 1 is connected to the intake pipe 2, and the bottom is connected to the outlet pipe 3. The refrigerant enters the cylinder body 1 through the intake pipe 2, and the air flow enters the compressor through the outlet pipe 3. The inner pipe 4 is arranged inside the cylinder body 1 and communicates with the outlet pipe 3. A partition 5 is also arranged between the inner pipe 4 and the cylinder body 1.

[0040] In this embodiment, the inner pipe 4 is in a Y-shaped structure, the pipe orifice plane is parallel to the upper end face of the cylinder body 1, and the distance H between the pipe orifice and the upper end face is H ≤ 10 mm.

[0041] In this embodiment, the design of the inner pipe 4 can prevent liquid refrigerant and foreign objects from entering the compressor, and can double the intake air flow area, increase the effective volume, and because there is no need to set a filter, the effective volume of the liquid reservoir is increased, and the performance of the compressor can be improved.

[0042] Embodiment 2

[0043] A filterless liquid reservoir includes a cylinder body 1, an intake pipe 2, an outlet pipe 3, an inner pipe 4 and a partition 5.

[0044] Among them, the cylinder body 1 includes an upper end face, a middle cylinder body and a lower end face. The upper end face is in a trumpet-shaped structure with a smaller top and a larger bottom, the top opening is connected to the intake pipe 2, the bottom opening is connected to the middle cylinder body, the middle cylinder body is in a hollow cylindrical structure, the top opening is connected to the upper end face, the bottom opening is connected to the lower end face, the lower end face is in a trumpet-shaped structure with a larger top and a smaller bottom, the top opening is connected to the middle cylinder body, and the bottom opening is connected to the outlet pipe 3. An inner pipe 4 communicating with the outlet pipe 3 is arranged inside the cylinder body 1, and a partition 5 is also arranged inside the cylinder body 1 outside the inner pipe 4.

[0045] In this embodiment, the inner pipe 4 is in a Y-shaped structure, including two symmetrically arranged upper branch pipes 41 and a lower main pipe 42 communicating with the two upper branch pipes 41. The top openings of the upper branch pipes 41 are all parallel to the wall surface of the trumpet-shaped structure of the upper end face, and the distance H is 6 mm. The lower main pipe 42 is coaxial with the intake pipe 2 and the bottom is connected to the outlet pipe 3. An oil return hole is arranged on the lower main pipe 42. The partition 5 is arranged outside the lower main pipe 42, and is provided with a through hole for the inner pipe 4 to pass through and a through hole for the liquid refrigerant to pass through.

[0046] In this embodiment, both the upper branch pipe 41 and the lower main pipe 42 are straight pipes.

[0047] Embodiment 3

[0048] A filterless liquid reservoir, such as Figure 2 shown, includes a cylinder body 1, an intake pipe 2, an outlet pipe 3, an inner pipe 4 and a partition 5.

[0049] Among them, the top of the cylinder body 1 is connected to the intake pipe 2, and the bottom is connected to the outlet pipe 3. The refrigerant enters the cylinder body 1 through the intake pipe 2, and the air flow enters the compressor through the outlet pipe 3. The inner pipe 4 is arranged inside the cylinder body 1 and is connected to the outlet pipe 3. A partition plate 5 is also arranged between the inner pipe 4 and the cylinder body 1.

[0050] In this embodiment, the inner pipe 4 has a Y-shaped structure, including two symmetrically arranged upper branch pipes 41 and a lower main pipe 42 communicating with the two upper branch pipes 41. The distance H between the top opening of the upper branch pipe 41 and the corresponding wall surface of the cylinder body 1 is 1 - 6 mm, and the included angle between the axes of the two upper branch pipes 41 is 120°. The lower main pipe 42 is coaxial with the intake pipe 2 and is connected to the outlet pipe 3 at the bottom. The lower main pipe 42 is provided with an oil return hole. The partition plate 5 is arranged outside the lower main pipe 42, and is provided with a through hole for the inner pipe 4 to pass through and a through hole for the liquid refrigerant to pass through.

[0051] In this embodiment, both the upper branch pipe 41 and the lower main pipe 42 are straight pipes.

[0052] Embodiment 4

[0053] A filterless liquid reservoir, as Figure 3 shown, includes a cylinder body 1, an intake pipe 2, an outlet pipe 3, an inner pipe 4 and a partition plate 5.

[0054] Among them, the top of the cylinder body 1 is connected to the intake pipe 2, and the bottom is connected to the outlet pipe 3. The refrigerant enters the cylinder body 1 through the intake pipe 2, and the air flow enters the compressor through the outlet pipe 3. The inner pipe 4 is arranged inside the cylinder body 1 and is connected to the outlet pipe 3. A partition plate 5 is also arranged between the inner pipe 4 and the cylinder body 1.

[0055] In this embodiment, the inner pipe 4 has a Y-shaped structure, including two symmetrically arranged upper branch pipes 41 and a lower main pipe 42 communicating with the two upper branch pipes 41. The distance H between the top opening of the upper branch pipe 41 and the corresponding wall surface of the cylinder body 1 is 5 - 10 mm. The lower main pipe 42 is coaxial with the intake pipe 2 and is connected to the outlet pipe 3 at the bottom. The lower main pipe 42 is provided with an oil return hole. The partition plate 5 is arranged outside the lower main pipe 42, and is provided with a through hole for the inner pipe 4 to pass through and a through hole for the liquid refrigerant to pass through.

[0056] In this embodiment, the lower main pipe 42 is a straight pipe, and the upper branch pipe 41 is a pipe with a bent structure, including a lower end and an upper end. The upper end is arranged vertically, the lower end is connected to the lower main pipe 42 and the upper end, and the included angle between the axes of the lower ends of the two upper branch pipes 41 is 120°.

[0057] Comparative Example 1

[0058] A liquid reservoir, as Figure 4As shown in the figure, it includes a cylinder body 1, an air inlet pipe 2, an air outlet pipe 3, an inner pipe 4, a partition plate 5 and a filter screen 6. In this comparative example, the inner pipe 4 is a single vertically arranged pipe, and a filter screen 6 is arranged above it. The rest is the same as that of Embodiment 1. It can be seen that the presence of the filter screen occupies the internal space of the liquid storage device, reducing the effective volume of the liquid storage device, and the single-pipe design of the inner pipe results in a relatively small air intake flow area, which is not conducive to improving the performance of the compressor.

[0059] The present utility model also provides a compressor, including the above-mentioned liquid storage device without a filter screen.

[0060] The above description of the embodiments is for the convenience of those of ordinary skill in the art to understand and use the utility model. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative labor. Therefore, the present utility model is not limited to the above embodiments, and all improvements and modifications made by those skilled in the art without departing from the scope of the present utility model according to the disclosure of the present utility model should be within the protection scope of the present utility model.

Claims

1. A filter-free liquid storage device, characterized in that: It comprises a cylinder (1), an air inlet pipe (2), an air outlet pipe (3), an inner pipe (4) and a partition plate (5); An air inlet pipe (2) is arranged at the top of the cylinder (1), an air outlet pipe (3) is arranged at the bottom, an inner pipe (4) is arranged inside the cylinder (1) and is connected to the air outlet pipe (3), and a partition plate (5) is arranged inside the cylinder (1) and is located outside the inner pipe (4); The inner tube (4) has a Y-shaped structure, and the distance H between the top opening of the inner tube (4) and the wall surface of the corresponding cylinder (1) is ≤10 mm.

2. The filter-free liquid storage device according to claim 1, characterized in that: The top opening of the inner tube (4) is parallel to the wall surface of the corresponding cylinder (1).

3. The filter-free liquid storage device according to claim 1, characterized in that: The distance H between the top opening of the inner tube (4) and the wall surface of the corresponding cylinder (1) is ≥1 mm.

4. The filter-free liquid storage device according to claim 1, characterized in that: The inner pipe (4) comprises an upper branch pipe (41) and a lower main pipe (42), and the upper end of the lower main pipe (42) is connected to two symmetrically arranged upper branch pipes (41).

5. The filter-free liquid storage device according to claim 4, characterized in that: The top openings of the two upper branch pipes (41) are staggered from the air inlet pipe (2) in the horizontal direction.

6. The filter-free liquid storage device according to claim 4, characterized in that: The upper branch pipe (41) is a straight pipe, and the angle between the axes of the two upper branch pipes (41) is 30° to 150°.

7. The filter-free liquid storage device according to claim 4, characterized in that: The upper branch pipe (41) is a pipe with a bent structure, comprising a lower end and an upper end connected at an angle, the upper end being arranged vertically, and the angle between the axes of the lower ends of the two upper branch pipes (41) is 90° to 150°.

8. The filter-free liquid storage device according to claim 4, characterized in that: The lower main pipe (42) is a straight pipe, which is coaxially arranged with the air intake pipe (2) and the cylinder (1), and an oil return hole is provided on the lower main pipe (42).

9. The filter-free liquid storage device according to claim 1, characterized in that: At least one partition (5) is arranged in the cylinder (1) at intervals along the height direction, and the partition (5) is provided with a through hole for the inner tube (4) to pass through and a through hole for the liquid refrigerant to pass through.

10. A compressor, characterized in that: It comprises a filter-free liquid reservoir as described in any one of claims 1-9.

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