Compressor oil storage structure and compressor

Abstract

The utility model provides a compressor oil storage structure and compressor, the compressor oil storage structure includes: the casing, be equipped with the baffle plate in the casing, the baffle plate divides the casing into oil pool and compression chamber, be equipped with the oil return channel on the baffle plate, the oil in the compression chamber can flow back into the oil pool through the oil return channel. According to the compressor, the technical problems that the refrigerant content in the refrigerant is high, the performance of the compressor is reduced and the reliability is poor due to the fact that the contact area between the refrigerant in the compressor shell and the refrigerant oil in the oil pool is large in the prior art can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressors, and in particular relates to a compressor oil storage structure and a compressor. Background Art

[0002] For conventional high back pressure rotor compressors, the mixing of refrigerant and refrigeration oil in the compression chamber of the pump body is harmful; while the mixing of refrigerant and refrigeration oil in the shell is usually not beneficial. If the two are in unlimited contact, a large amount of refrigeration oil will be discharged from the compressor along with the refrigerant, reducing the heat exchange performance of the system, and also causing the compressor to lack oil and cause early mechanical wear.

[0003] Since the contact area between the refrigerant in the compressor casing and the refrigeration oil in the oil pool in the prior art is large, resulting in a high refrigeration oil content in the refrigerant, which leads to technical problems such as reduced compressor performance and poor reliability, the utility model studies and designs a compressor oil storage structure and a compressor. Utility Model Content

[0004] Therefore, the utility model provides a compressor oil storage structure and a compressor, which can solve the technical problem in the prior art that the contact area between the refrigerant in the compressor casing and the refrigeration oil in the oil pool is large, resulting in a high refrigeration oil content in the refrigerant, resulting in reduced compressor performance and poor reliability.

[0005] In order to solve the above problems, the utility model provides a compressor oil storage structure, including: a shell, a partition is arranged in the shell, the partition divides the shell into an oil pool and a compression chamber, and an oil return channel is provided on the partition, and the oil in the compression chamber can flow back into the oil pool through the oil return channel.

[0006] In some embodiments, a collecting piece is provided on the partition, and the oil return channel is connected to the oil pool through the collecting piece. A cover plate is also provided on the collecting piece, and the cover plate can open or close the oil return channel.

[0007] In some embodiments, the collecting member is disposed on a side of the partition facing the oil pool, the side of the collecting member facing the oil pool has a first opening, and the cover plate is disposed at the first opening.

[0008] In some embodiments, the collecting member has a collecting chamber and a second opening, the first opening and the second opening are in communication with the collecting chamber, and the second opening is in communication with the oil return channel.

[0009] In some embodiments, the cover plate is connected to the collecting member via a rotating shaft, and the cover plate can rotate around the rotating shaft so that the cover plate can open or close the first opening.

[0010] In some embodiments, the rotating shaft is located on the cover plate, and a counterweight is provided at one end of the cover plate away from the first opening.

[0011] In some embodiments, an elastic member is sleeved on the rotating shaft, one end of the elastic member is connected to the collecting member, and the other end of the elastic member is connected to the cover plate.

[0012] In some embodiments, the side of the partition facing the compression chamber is arc-shaped, the opening of the arc faces the compression chamber, and the oil return channel is located at the center of the side of the partition facing the compression chamber.

[0013] In some embodiments, a through hole is provided on the partition plate, and a crankshaft is provided in the through hole, and the oil in the oil pool is transported to the compression chamber through the crankshaft.

[0014] The utility model also provides a compressor, which includes the above-mentioned compressor oil storage structure.

[0015] The utility model provides a compressor oil storage structure and a compressor having the following beneficial effects:

[0016] The space inside the compressor housing is divided into a compressor and an oil pool by a partition. The compression chamber is provided with a pump body assembly and a drive assembly. The oil pool is used to store lubricating oil. The partition completely separates the compressor and the oil pool, avoiding the contact between the lubricating oil in the oil pool and the refrigerant, greatly reducing the oil entrainment rate of the refrigerant. The lubricating oil in the compression chamber flows back to the oil pool through the oil return channel, forming a lubricating oil circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the description of the prior art. The drawings described below are merely exemplary. For those skilled in the art, other implementation drawings can be derived from the provided drawings without inventive effort.

[0018] Figure 1 This is a structural diagram of the shell in the compressor oil storage structure of the utility model;

[0019] Figure 2 This is a structural diagram of the oil storage structure of the compressor of the utility model;

[0020] Figure 3 This is a structural diagram of a collecting component in the compressor oil storage structure of the utility model;

[0021] Figure 4 This is a diagram showing a closed state of the collecting member in the compressor oil storage structure of the present invention;

[0022] Figure 5 This is a diagram of the compressor oil storage structure of the utility model in an open state of the collecting component.

[0023] The accompanying drawings are:

[0024] 1. Shell; 2. Partition; 3. Collecting part; 4. Oil pool; 5. Crankshaft; 6. Compression chamber; 7. Cover plate; 8. Collecting chamber; 9. Rotating shaft; 10. Counterweight. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0027] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0028] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0029] See also Figure 1-5 As shown, according to an embodiment of the present utility model, a compressor oil storage structure is provided, comprising: a housing 1, a partition 2 is provided in the housing 1, the partition 2 divides the housing 1 into an oil pool 4 and a compression chamber 6, and the partition 2 is provided with an oil return channel, so that the oil in the compression chamber 6 can flow back into the oil pool 4 through the oil return channel. In this technical solution, the space in the compressor housing 1 is divided into a compressor 6 and an oil pool 4 by the partition 2, the compression chamber 6 is provided with a pump body assembly and a drive assembly, the oil pool 4 is used to store lubricating oil, and the partition 2 completely separates the compressor 6 and the oil pool 4, thereby preventing the lubricating oil in the oil pool 4 from contacting the refrigerant, greatly reducing the oil entrainment rate of the refrigerant, and the lubricating oil in the compression chamber 6 flows back into the oil pool 4 through the oil return channel, forming a lubricating oil circulation.

[0030] In some embodiments, a collecting member 3 is provided on the partition 2, and the oil return channel is connected to the oil pool 4 through the collecting member 3. A cover plate 7 is also provided on the collecting member 3, and the cover plate 7 can open or close the oil return channel. In this technical solution, the collecting member 3 and the cover plate 7 are used to limit the fusion of the refrigeration oil and the refrigerant in the shell to the maximum extent. When the refluxed lubricating oil is collected in the collecting member 3, when the refluxed lubricating oil reaches a certain amount, the cover plate 8 is opened to return the lubricating oil to the oil pool 4. When the amount of refluxed lubricating oil is small, the cover plate 8 is closed to prevent the lubricating oil in the oil pool 4 from contacting the refrigerant, thereby ensuring that the lubricating oil normally returns to the oil pool 4 and preventing the lubricating oil in the oil pool 4 from contacting the refrigerant.

[0031] In some embodiments, the collecting member 3 is disposed on the side of the partition 2 facing the oil pool 4. The collecting member 3 has a first opening on the side facing the oil pool 4, and the cover plate 7 is disposed at the first opening. In this technical solution, the collecting member 3 is disposed on the side of the partition 2 facing the oil pool 4 to facilitate the collecting member 3 to collect the refluxed lubricating oil. The collecting member 3 has a first opening on the side facing the oil pool 4, and the cover plate 7 is disposed at the first opening to facilitate the cover plate 7 opening the first opening, thereby allowing the collected lubricating oil to flow back into the oil pool 4.

[0032] The compressor oil storage structure of the utility model effectively reduces the amount of oil and refrigerant mixed in the separation zone and reduces low-enthalpy mixtures. The separation zone is a high-pressure zone inside the shell and has an exclusive oil storage space. The structure limits the contact and dissolution of the refrigeration oil and the refrigerant in the compressor shell. A dedicated oil return channel is set from the separation zone to the oil pool to reduce the amount of oil in the high-pressure zone inside the shell and ensure that an appropriate amount of refrigeration oil in the compressor participates in the circulation.

[0033] In some embodiments, the collecting member 3 has a collecting chamber 8 and a second opening, the first opening and the second opening are connected to the collecting chamber 8, and the second opening is connected to the oil return channel. Figure 2 As shown, the collecting chamber 8 may be an irregular cavity, and the collecting chamber 8 transports the refluxed lubricating oil to the oil pool 4 through the first opening and the second opening.

[0034] The compressor oil storage structure of this utility model minimizes the fusion of refrigerant oil and refrigerant in the shell, solves the problem of high oil discharge of the rotary compressor, and meets the requirement of isolating the refrigerant oil in the shell. Secondly, a dedicated oil return structure is set to ensure that the excess refrigerant oil in the shell can be collected and returned to the oil storage chamber for recycling.

[0035] In some embodiments, the cover plate 7 is connected to the collecting member 3 via a rotating shaft 9. The cover plate 7 can rotate about the rotating shaft 9 to open or close the first opening. In this technical solution, the cover plate 7 can rotate about the rotating shaft 9 to open or close the first opening, thereby ensuring that the lubricating oil properly flows back into the oil pool 4 while preventing the lubricating oil in the oil pool 4 from contacting the refrigerant.

[0036] In some embodiments, the rotating shaft 9 is located on the cover plate 7, and a counterweight 10 is provided at one end of the cover plate 7 away from the first opening. In this technical solution, when the weight of the refluxed lubricating oil in the collection chamber 8 is less than the weight of the counterweight 10, the cover plate 7 rotates upward under the weight of the counterweight 10, closing the first opening. When the weight of the refluxed lubricating oil in the collection chamber 8 is greater than the weight of the counterweight 10, the cover plate 7 rotates upward under the weight of the counterweight 10, opening the first opening.

[0037] The compressor oil storage structure of the present invention divides the compressor into three areas by considering the need and beneficial effects of the fusion of compressor oil and refrigeration. The first is the designed mixing area, which refers to the compression working area of ​​the compressor, and the design requirements are met by designing the inhaled refrigerant and the inhaled refrigeration oil; the second is the non-mixing area, which refers to the oil pool area, and the ineffective fusion of refrigeration oil and refrigerant is reduced by isolating and storing excess refrigeration oil; the third is the separation area, where the high-temperature and high-pressure refrigerant and refrigeration oil mixture discharged from the compression chamber rotates and separates in the shell, and the refrigerant carries a small amount of refrigeration oil and is discharged from the exhaust port, and most of the refrigeration oil is separated in the shell and returns to the oil pool 4 from the partition 2 and the oil return channel to form a cycle.

[0038] The compressor oil storage structure of the present invention is provided with a partition 2 and an oil return channel. The partition 2 is used to isolate the refrigerant in the shell from the physical contact with the refrigeration oil, reducing the normal dissolution and fusion of the two. This state of fusion is usually considered to be useless or harmful. During the working cycle of the compressor, a constant volume of refrigeration oil is sucked from the oil pool through the crankshaft 5, and enters the compression chamber through several small holes in the middle of the crankshaft, and is mixed with the refrigerant sucked in by the air intake and the compressor, so as to realize the normal refrigeration operation of the compressor; after the compressor is compressed, the high-temperature and high-pressure refrigeration oil and refrigerant mixture enters the cavity in the shell, and the refrigeration oil and the refrigerant are separated. The refrigerant is discharged from the exhaust port, and most of the refrigeration oil is separated and returned to the collecting part 3; the collecting part 3 is composed of a special-shaped collecting chamber 8, an oil collector cover 7, a rotating shaft 9 and a counterweight 10. When the weight of the refrigeration oil in the special-shaped collecting chamber 8 is greater than the counterweight 10, the oil collector cover 7 opens; otherwise, the special-shaped collecting chamber 8 continues to collect, realizing the automatic timed and quantitative oil return function.

[0039] In some embodiments, an elastic member is sleeved on the rotating shaft 9, one end of the elastic member being connected to the collecting member 3, and the other end of the elastic member being connected to the cover plate 7. In this technical solution, the elastic member is a spring. When the weight of the refluxed lubricating oil in the collecting chamber 8 is less than the elastic force of the elastic member, the cover plate 7 rotates upward under the elastic action of the elastic member, closing the first opening. When the weight of the refluxed lubricating oil in the collecting chamber 8 is greater than the elastic force of the elastic member, the cover plate 7 rotates upward under the elastic action of the elastic member, opening the first opening.

[0040] In some embodiments, the side of the partition plate 2 facing the compression chamber 6 is curved, with the opening of the curved shape facing the compression chamber 6, and the oil return channel is located at the center of the side of the partition plate 2 facing the compression chamber 6. In this technical solution, the side of the partition plate 2 facing the compression chamber 6 is curved, with the opening of the curved shape facing the compression chamber 6, and the oil return channel is located at the center of the side of the partition plate 2 facing the compression chamber 6. The refluxed lubricant is collected in the collection chamber 8, thereby reducing the contact surface between the refrigerant and the lubricant oil and reducing the low enthalpy mixture.

[0041] In some embodiments, the partition plate 2 is provided with a through hole, a crankshaft 5 is disposed in the through hole, and the oil in the oil pool 4 is transported to the compression chamber 6 through the crankshaft 5. In this technical solution, the partition plate 2 is provided with a through hole, the crankshaft 5 is disposed in the through hole, and the crankshaft 5 is provided with an oil delivery channel. When the compressor is working, under the action of the pump body, the lubricating oil in the oil pool 4 flows through the various components of the compressor under the action of the oil delivery channel of the crankshaft 5, thereby lubricating each component.

[0042] The compressor oil storage structure of the present invention is aimed at a high back-pressure rotary rotor compressor, which is composed of a liquid separator and an air intake port, an outer shell, upper and lower shell covers and an exhaust port, a motor, a pump body component, a partition, a refrigeration oil and other main components; wherein, the partition 2 is arranged in the shell 1, dividing the cavity in the shell into an upper and a lower part, the lower part being an oil pool; one or more through holes are provided on the partition, and the through holes form an oil return channel, and a collecting part 3 is provided in the through hole, that is, one or more collecting parts 3; the refrigeration oil on the surface of the partition 2 can flow into the collecting part 3, and the collecting part 3 is provided with a collecting chamber 8, and the special-shaped collecting chamber 8 has a fixed volume, and an openable and closable oil collector cover 7 is provided at its lower end; the oil collector cover 7 is provided with a counterweight 10, and the cover 7 can rotate around the rotating shaft 9, and cooperates with the counterweight 10 to control the opening and closing of the oil collector cover 7. The collecting part 3 consists of a special-shaped collecting chamber 8, an oil collector cover 7, a rotating shaft 9 and a counterweight 10. When the weight of the refrigerant oil in the special-shaped collecting chamber 8 is greater than the counterweight 10, the oil collector cover 7 opens; when the weight of the refrigerant oil in the special-shaped collecting chamber 8 is less than the counterweight 10, the oil collector cover 7 remains closed.

[0043] This utility model's compressor oil storage structure automatically returns a fixed amount of refrigerant oil to the oil sump, preventing the refrigerant oil in the compressor sump from dissolving with the refrigerant in the housing, which would otherwise require a large amount of oil to be removed from the compression chamber. The partition 2 and collector 3 effectively isolate the refrigerant oil in the housing from the refrigerant, reducing the amount of refrigerant oil injected, theoretically requiring only the minimum amount required for the refrigeration cycle. The isolation of the oil sump from the housing cavity effectively prevents bubbles from forming during crankshaft rotation, improving the noise level.

[0044] The compressor oil storage structure of the present invention establishes zoning management of refrigeration oil in the compressor by arranging partitions 2 and collecting parts 3, which can achieve the beneficial effect of reducing the oil discharge rate. At the same time, it also has a positive effect on reducing the refrigeration oil filling amount and reducing the oil pool disturbance noise.

[0045] The utility model provides a compressor oil storage structure and a compressor having the following beneficial effects:

[0046] It is easy for those skilled in the art to understand that, under the premise of no conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. Such improvements and variations shall also be considered within the scope of protection of the present invention.

Claims

1. A compressor oil storage structure, characterized by: include: A shell (1) is provided with a partition (2) in the shell (1), the partition (2) divides the shell (1) into an oil pool (4) and a compression chamber (6), and an oil return channel is provided on the partition (2), so that the oil in the compression chamber (6) can flow back into the oil pool (4) through the oil return channel.

2. The compressor oil storage structure according to claim 1, characterized in that: A collecting piece (3) is provided on the partition (2), and the oil return channel is connected to the oil pool (4) through the collecting piece (3). A cover plate (7) is also provided on the collecting piece (3), and the cover plate (7) can open or close the oil return channel.

3. The compressor oil storage structure according to claim 2, characterized in that: The collecting member (3) is arranged on a side of the partition (2) facing the oil pool (4), the side of the collecting member (3) facing the oil pool (4) has a first opening, and the cover plate (7) is arranged at the first opening.

4. The compressor oil storage structure according to claim 3, characterized in that: The collecting member (3) has a collecting chamber (8) and a second opening, the first opening and the second opening are in communication with the collecting chamber (8), and the second opening is in communication with the oil return channel.

5. The compressor oil storage structure according to claim 3, characterized in that: The cover plate (7) is connected to the collecting member (3) via a rotating shaft (9), and the cover plate (7) can rotate around the rotating shaft (9) so that the cover plate (7) can open or close the first opening.

6. The compressor oil storage structure according to claim 5, characterized in that: The rotating shaft (9) is located on the cover plate (7), and a counterweight (10) is provided at one end of the cover plate (7) away from the first opening.

7. The compressor oil storage structure according to claim 5, characterized in that: An elastic member is sleeved on the rotating shaft (9), one end of the elastic member is connected to the collecting member (3), and the other end of the elastic member is connected to the cover plate (7).

8. The compressor oil storage structure according to claim 2, characterized in that: The side of the partition plate (2) facing the compression chamber (6) is arc-shaped, the opening of the arc faces the compression chamber (6), and the oil return channel is located at the center of the side of the partition plate (2) facing the compression chamber (6).

9. The compressor oil storage structure according to claim 1, characterized in that: The partition plate (2) is provided with a through hole, a crankshaft (5) is arranged in the through hole, and the oil in the oil pool (4) is transported to the compression chamber (6) through the crankshaft (5).

10. A compressor, characterized in that: The invention comprises the compressor oil storage structure according to any one of claims 1 to 9.

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