A compressor with built-in oil separator

Abstract

The present invention discloses a compressor with a built-in oil separator, comprising: a compressor body; an outer shell, the outer shell is formed with a front shell portion, the front shell portion is provided with an exhaust port, and an exhaust chamber is formed between the front shell portion and the static vortex; an oil separator housing, the oil separator housing is arranged on the front shell portion, an oil separator channel is formed between the oil separator housing and the front shell portion, the oil separator channel is connected with the exhaust port, the oil separator channel has a stopper, an oil separator inlet is arranged on the oil separator housing, and the oil separator inlet is connected with the oil separator channel and the exhaust chamber; an oil separator core rod, the oil separator core rod is arranged in the oil separator channel, the oil separator core rod has an exhaust channel, the exhaust channel is connected with the oil separator channel and the exhaust port, a spiral channel is formed between the oil separator core rod and the oil separator channel, the spiral channel is connected with the oil separator channel, the spiral channel is connected with the oil separator inlet, and a contact portion is arranged on the oil separator core rod. Through the application of the present invention, the oil storage capacity of the compressor is improved, impurities are avoided during the installation process, and the safety and reliability of the compressor are further improved.

Description

Technical Field

[0001] The invention relates to the technical field of compressors, and in particular to a compressor with built-in oil. Background Art

[0002] As the production of new energy vehicles continues to increase, users have higher requirements for the performance of new energy vehicles. At present, most new energy vehicles use scroll compressors in air conditioning and refrigeration systems. However, in order to ensure the reasonable design of the body weight and internal installation space of new energy vehicles, automobile manufacturers often have higher design requirements for automotive scroll compressors, which inevitably makes the compressor structure more compact and smaller in size, but this also causes the compressor's own storage space for storing lubricating oil to be relatively limited. At the same time, in order to better meet market demand, the maximum speed of scroll compressors is constantly increasing, and the high-speed operation of the compressor can easily cause a large amount of lubricating oil to be discharged into the system along with the refrigerant, thereby causing compressor reliability problems and low system energy efficiency problems. Summary of the invention

[0003] In view of this, in order to solve the above problems, the object of the present invention is to provide a compressor with a built-in oil separator, comprising:

[0004] Compressor body;

[0005] A housing, the compressor body is arranged in the housing, a front housing portion is formed on one side of the housing close to the static scroll of the compressor body, an exhaust port is provided on the front housing portion, and an exhaust cavity is formed between the front housing portion and the static scroll;

[0006] An oil separator housing, the oil separator housing is arranged on a side of the front shell portion close to the static vortex, an oil separator passage is formed between the oil separator housing and the front shell portion, one end of the oil separator passage is connected to the exhaust port, a stopper is provided in the oil separator passage, an oil separator inlet is provided on the oil separator housing, and the oil separator inlet is connected to the oil separator passage and the exhaust chamber;

[0007] An oil separator core rod is installed in the oil separator channel, an exhaust channel is formed in the oil separator core rod, the exhaust channel connects the other end of the oil separator channel and the exhaust port, a spiral channel is formed between the outer side of the oil separator core rod and the oil separator channel, one end of the spiral channel is connected to the other end of the oil separator channel, the other end of the spiral channel is connected to the oil separator inlet, and a contact portion is provided on the oil separator core rod, and the contact portion abuts against the stop portion.

[0008] In another preferred embodiment, the oil separation housing and the outer shell are an integrated structure.

[0009] In another preferred embodiment, the oil separation channel includes a first channel portion, a second channel portion and a third channel portion connected in sequence, the oil separation core rod is installed in the second channel portion and the third channel portion, and one end of the first channel portion away from the second channel portion passes through the outer shell and forms the exhaust port.

[0010] In another preferred embodiment, the inner contour of the first channel portion is larger than the inner contour of the second channel portion, the inner contour of the second channel portion is larger than the inner contour of the third channel portion, and the stop portion is formed between the second channel portion and the third channel portion.

[0011] In another preferred embodiment, the oil separator core rod includes a tube body, a spiral blade and a fixed sleeve in an integrated structure, the tube body is arranged in the oil separator channel, the exhaust channel is formed in the tube body, the spiral blade is sleeved on the outside of the middle part of the tube body, the fixed sleeve is sleeved on the outside of one end of the tube body close to the exhaust port, one end of the tube body is arranged in the third channel, and the spiral blade and the fixed sleeve are both arranged in the second channel.

[0012] In another preferred embodiment, the contact portion is formed on one end of the spiral blade away from the exhaust port, and the contact portion has at least one vertical direct contact surface and at least one spiral connecting surface, one end of the vertical direct contact surface is connected to the spiral connecting surface, and a chamfered structure is formed at the connection between the vertical direct contact surface and the spiral connecting surface, and the chamfered structure has an abutting surface, and the abutting surface abuts against the stop portion, and the abutting surface is set at an angle of 20° with the axis of the oil separation channel.

[0013] In another preferred embodiment, an oil storage chamber is formed in a side of the oil separator housing away from the exhaust port, an oil separator outlet is provided at an end of the third channel portion away from the second channel portion, the oil storage chamber is connected to the third channel portion through the oil separator outlet, and an inner contour of the oil separator outlet is smaller than an inner contour of the third channel portion.

[0014] In another preferred embodiment, the outer wall of one end of the oil separator core rod close to the exhaust port is interference fit with the inner wall of the oil separator channel to fix the oil separator core rod in the oil separator channel.

[0015] In another preferred embodiment, the oil separation core rod is made of aluminum material or a polymer material that is resistant to oil and refrigerant.

[0016] In another preferred embodiment, it also includes: a C-shaped retaining spring, a connecting portion of the first channel portion and the second channel portion extending radially outward to form a retaining groove, the C-shaped retaining spring is installed in the retaining groove and abuts against one end of the oil separator core rod close to the exhaust port.

[0017] Due to the adoption of the above technical scheme, the present invention has the following positive effects compared with the prior art: through the application of the present invention, the oil storage capacity of the compressor is further improved, and the internal space of the compressor is reasonably utilized; at the same time, it ensures that the installation of the oil separator core rod is simpler and firmer, and impurities are avoided from mixing into the lubricating oil during the installation process. While relaxing the manufacturing requirements for the oil separator core rod, the safety and reliability of the compressor are further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of a compressor with a built-in oil separator according to the present invention;

[0019] Figure 2 It is a schematic diagram of an oil separator core rod of a compressor with a built-in oil separator according to the present invention;

[0020] Figure 3 It is a schematic diagram of an oil separator channel of a compressor with a built-in oil separator according to the present invention;

[0021] Figure 4 It is a schematic diagram of the assembly of a card slot of a compressor with a built-in oil separator according to the present invention;

[0022] Figure 5 The figure is a schematic diagram of a C-shaped retaining spring of a compressor with a built-in oil separator according to the present invention.

[0023] In the attached figure:

[0024] 1. Shell; 2. Front shell; 21. Exhaust port; 22. Exhaust cavity; 23. Oil separator housing; 24. Oil separator channel; 3. Stopper; 25. Oil separator inlet; 4. Oil separator core rod; 41. Exhaust channel; 42. Spiral channel; 43. Contact portion; 241. First channel portion; 242. Second channel portion; 243. Third channel portion; 401. Tube body; 402. Spiral blade; 403. Fixed sleeve; 404. Vertical contact surface; 405. Spiral connection surface; 26. Oil storage chamber; 27. Oil separator outlet; 5. C-shaped retaining spring; 6. Recess; 7. Chamfer structure. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0026] like Figures 1 to 5As shown, a compressor with a built-in oil separator in a preferred embodiment includes: a compressor body; a shell 1, the compressor body is arranged in the shell 1, a front shell portion 2 is formed on the side of the shell 1 close to the static scroll of the compressor body, an exhaust port 21 is provided on the front shell portion 2, and an exhaust cavity 22 is formed between the front shell portion 2 and the static scroll; an oil separator housing 23, the oil separator housing 23 is arranged on the side of the front shell portion 2 close to the static scroll, an oil separator channel 24 is formed between the oil separator housing 23 and the front shell portion 2, one end of the oil separator channel 24 is connected to the exhaust port 21, a stopper 3 is provided in the oil separator channel 24, and the oil separator housing An oil separator inlet 25 is provided on 23, and the oil separator inlet 25 is connected to the oil separator channel 24 and the exhaust chamber 22; an oil separator core rod 4, the oil separator core rod 4 is installed in the oil separator channel 24, an exhaust channel 41 is formed in the oil separator core rod 4, the exhaust channel 41 is connected to the other end of the oil separator channel 24 and the exhaust port 21, a spiral channel 42 is formed between the outer side of the oil separator core rod 4 and the oil separator channel 24, one end of the spiral channel 42 is connected to the other end of the oil separator channel 24, and the other end of the spiral channel 42 is connected to the oil separator inlet 25, and a contact portion 43 is provided on the oil separator core rod 4, and the contact portion 43 is against the stopper 3. Furthermore, the oil-gas mixture flows out from the compressor body into the exhaust chamber 22 on the static scroll, and then enters the spiral channel 42 through the oil separator inlet 25. Under the action of pressure, the oil-gas mixture rotates and flows along the oil separator channel 24 toward the end away from the exhaust port 21. When reaching the end, the oil droplets are separated due to their own weight, and the excess gas flows out from the exhaust channel 41 toward the exhaust port 21; at the same time, the contact portion 43 and the stop portion 3 are matched and offset, so that the oil separator core rod 4 is stably positioned in the oil separator channel 24.

[0027] Furthermore, as a preferred embodiment, the oil separator housing 23 and the outer shell 1 are an integrated structure.

[0028] Further, as a preferred embodiment, the oil separation channel 24 includes a first channel portion 241, a second channel portion 242 and a third channel portion 243 which are connected in sequence, the oil separation core rod 4 is installed in the second channel portion 242 and the third channel portion 243, and one end of the first channel portion 241 away from the second channel portion 242 passes through the outer shell 1 and forms an exhaust port 21.

[0029] Further, as a preferred embodiment, the inner contour of the first channel portion 241 is larger than the inner contour of the second channel portion 242 , the inner contour of the second channel portion 242 is larger than the inner contour of the third channel portion 243 , and a stop portion 3 is formed between the second channel portion 242 and the third channel portion 243 .

[0030] Further, as a preferred embodiment, the oil separator core rod 4 includes a tube body 401, a spiral blade 402 and a fixed sleeve 403 in an integrated structure, the tube body 401 is arranged in the oil separator channel 24, an exhaust channel 41 is formed in the tube body 401, the spiral blade 402 is sleeved on the outside of the middle part of the tube body 401, the fixed sleeve 403 is sleeved on the outside of one end of the tube body 401 close to the exhaust port 21, one end of the tube body 401 is arranged in the third channel, and the spiral blade 402 and the fixed sleeve 403 are both arranged in the second channel.

[0031] Further, as a preferred embodiment, the inner diameter of the tube body 401 is smaller than the inner diameter of the third channel portion 243 .

[0032] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention.

[0033] The present invention also has the following implementation modes based on the above:

[0034] In a further embodiment of the present invention, the contact portion 43 is formed on one end of the spiral blade 402 away from the exhaust port 21, and the contact portion 43 has at least one vertical direct contact surface 404 and at least one spiral connection surface 405, one end of the vertical direct contact surface 404 is connected to the spiral connection surface 405, and a chamfered structure 7 is formed at the connection between the vertical direct contact surface 404 and the spiral connection surface 405, and the chamfered structure 7 has an abutting surface, and the abutting surface 7 abuts against the stopper 3, and the abutting surface is set at an angle of 20° with the axis of the oil separation channel 24. Further, the installation and axial positioning of the oil separation core rod 4 are facilitated, and the noise generated during operation is reduced.

[0035] Further, as a preferred embodiment, the stopper 3 is an annular surface, and the outer edge of the annular surface is convexly arranged toward the exhaust port 21 relative to the inner edge of the annular surface. Further, it matches the chamfer structure 7 mentioned above.

[0036] Furthermore, as a preferred embodiment, the radial width of the oil separation channel 24 along the chamfer structure 7 is less than 0.5 mm.

[0037] Further, as a preferred embodiment, the spiral blade 402 includes four interconnected spiral parts, the four spiral parts are an integrated structure, and the four spiral parts are evenly arranged along the circumferential direction of the tube body 401. In other words, Figure 2 As shown, the overall outer contour of the four spiral portions is in the shape of a special rectangular body that is twisted in a spiral, and the middle portion of each spiral portion along the width direction is concave relative to the two sides.

[0038] Furthermore, as a preferred embodiment, a chamfered structure 7 is formed between each two adjacent spiral portions at one end close to the stopper portion 3 , and the four chamfered structures 7 form a contact portion 43 .

[0039] In a further embodiment of the present invention, an oil storage chamber 26 is formed in a side of the oil separation housing 23 away from the exhaust port 21, and an oil separation outlet 27 is provided at one end of the third channel portion 243 away from the second channel portion 242. The oil storage chamber 26 is connected to the third channel portion 243 through the oil separation outlet 27, and the inner contour of the oil separation outlet 27 is smaller than the inner contour of the third channel portion 243. Further, the oil separation outlet 27 is used to guide the separated lubricating oil into the oil storage chamber 26.

[0040] In a further embodiment of the present invention, a pipeline may be provided on one side of the oil storage chamber 26 close to the compressor body to connect with other oil supply devices in the compressor.

[0041] Further, as a preferred embodiment, the oil supply device is an oil pool and a corresponding oil pump arranged at the bottom of the housing 1, and the oil pump delivers the lubricating oil to the eccentric bearing member at the movable scroll through an output pipe.

[0042] In a further embodiment of the present invention, the outer wall of the end of the oil separator core rod 4 near the exhaust port 21 is pressed and fitted with the inner wall of the oil separator channel 24 to fix the oil separator core rod 4 in the oil separator channel 24. Further, the second channel portion 242 of the fixing sleeve 403 is pressed and fixed to each other.

[0043] In a further embodiment of the present invention, the oil separation core rod 4 is made of aluminum material or a polymer material that is resistant to oil and refrigerant.

[0044] In a further embodiment of the present invention, it further comprises: a C-shaped clamping spring 5, a connection between the first channel portion 241 and the second channel portion 242 extends radially outward to form a clamping groove 6, and the C-shaped clamping spring 5 is installed in the clamping groove 6 and abuts against one end of the oil separator core rod 4 close to the exhaust port 21. Further, the interference squeeze force between the oil separator core rod 4 and the oil separator channel 24 can be reduced, thereby facilitating installation.

[0045] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A compressor with a built-in oil separator, characterized in that: include: Compressor body; A housing, the compressor body is arranged in the housing, a front housing portion is formed on one side of the housing close to the static scroll of the compressor body, an exhaust port is provided on the front housing portion, and an exhaust cavity is formed between the front housing portion and the static scroll; An oil separator housing, the oil separator housing is arranged on a side of the front shell portion close to the static vortex, an oil separator passage is formed between the oil separator housing and the front shell portion, one end of the oil separator passage is connected to the exhaust port, a stopper is provided in the oil separator passage, an oil separator inlet is provided on the oil separator housing, and the oil separator inlet is connected to the oil separator passage and the exhaust chamber; An oil separator core rod, the oil separator core rod is installed in the oil separator channel, an exhaust channel is formed in the oil separator core rod, the exhaust channel communicates with the other end of the oil separator channel and the exhaust port, a spiral channel is formed between the outer side of the oil separator core rod and the oil separator channel, one end of the spiral channel is communicated with the other end of the oil separator channel, the other end of the spiral channel is communicated with the oil separator inlet, and a contact portion is provided on the oil separator core rod, the contact portion abuts against the stop portion; The oil separation channel comprises a first channel portion, a second channel portion and a third channel portion connected in sequence, the oil separation core rod is installed in the second channel portion and the third channel portion, and one end of the first channel portion away from the second channel portion penetrates the housing and forms the exhaust port; The inner contour of the first channel portion is larger than the inner contour of the second channel portion, the inner contour of the second channel portion is larger than the inner contour of the third channel portion, and the stopper portion is formed between the second channel portion and the third channel portion; The oil separator core rod comprises a tube body, a spiral blade and a fixed sleeve in an integrated structure, the tube body is arranged in the oil separator channel, the exhaust channel is formed in the tube body, the spiral blade is sleeved on the outside of the middle part of the tube body, the fixed sleeve is sleeved on the outside of one end of the tube body close to the exhaust port, one end of the tube body is arranged in the third channel, and the spiral blade and the fixed sleeve are both arranged in the second channel; The contact portion is formed on one end of the spiral blade away from the exhaust port, and the contact portion has at least one vertical direct contact surface and at least one spiral connection surface. One end of the vertical direct contact surface is connected to the spiral connection surface, and a chamfered structure is formed at the connection between the vertical direct contact surface and the spiral connection surface. The chamfered structure has an abutting surface, and the abutting surface abuts against the stop portion. The abutting surface is set at an angle of 20° with the axis of the oil separation channel.

2. The oil-containing compressor according to claim 1, characterized in that: The oil separation housing and the outer shell are an integrated structure.

3. The oil-containing compressor according to claim 1, characterized in that: An oil storage chamber is formed in the oil separator housing on a side away from the exhaust port, and an oil outlet is formed at one end of the third channel portion away from the second channel portion. The oil storage chamber is connected to the third channel portion through the oil outlet, and the inner contour of the oil outlet is smaller than the inner contour of the third channel portion.

4. The oil-containing compressor according to claim 1, characterized in that: The outer wall of one end of the oil separator core rod close to the exhaust port is interference fit with the inner wall of the oil separator channel to fix the oil separator core rod in the oil separator channel.

5. The oil-containing compressor according to claim 1, characterized in that: The oil separation core rod is made of aluminum material or a polymer material that is resistant to oil and refrigerant.

6. The oil-containing compressor according to claim 1, characterized in that: Also includes: A C-shaped retaining spring is formed at a connection point between the first channel portion and the second channel portion extending radially outward to form a retaining groove. The C-shaped retaining spring is installed in the retaining groove and abuts against one end of the oil separation core rod close to the exhaust port.

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