Horizontal scroll compressor and air conditioner

Abstract

The present disclosure provides a scroll compressor and an air conditioner. The horizontal scroll compressor includes: a casing, a fixed scroll plate, a movable scroll plate and a support structure. The support structure is used to support the movable scroll plate. A first oil return channel is also provided at the bottom inner peripheral wall of the casing and / or at the bottom outer peripheral wall of the fixed scroll plate. The first oil return channel can guide the oil in the exhaust gas to the bottom outer peripheral wall of the support structure. An annular groove is provided on the outer peripheral wall of the support structure along its circumferential direction. The annular groove can guide the oil to the upper outer wall of the support structure and further to the movable plate bearing chamber and the main bearing chamber inside the support structure. According to the present disclosure, the oil can be guided to the upper part of the horizontal scroll compressor to fully lubricate the upper friction part, which effectively solves the problem that the upper friction part of the horizontal scroll compressor cannot be fully lubricated.

Description

Technical Field

[0001] The present disclosure relates to the technical field of compressors, and in particular to a horizontal scroll compressor and an air conditioner. Background Art

[0002] At present, horizontal electric variable frequency scroll compressors are widely used in new energy vehicle air-conditioning systems. Due to their high speed, for their long-term reliability, all friction parts need to be fully lubricated. The common lubrication method is high-pressure oil return lubrication. A throttling pin is placed in channel 1. The lubricating oil is separated in the oil separation structure and flows to the bottom under the action of gravity and flows into channel 1. It then flows through the throttling pin and channel 2 to the lubricated parts. This oil return method has very high requirements on the accuracy of the throttling pin. When the diameter of the throttling pin is too large, it is easy to cause blockage. When the diameter is too small, it is easy to leak, which affects the performance of the compressor. In addition, in horizontal compressors, the lubricating oil of this oil return method generally flows at the bottom of the compressor, and the lubrication effect on the upper friction pair is poor, especially the bearing part.

[0003] Since the horizontal scroll compressor in the prior art has technical problems such as the upper friction part cannot be fully lubricated, the present invention studies and designs a horizontal scroll compressor and an air conditioner.

[0004] Public Content

[0005] Therefore, the technical problem to be solved by the present disclosure is to overcome the defect in the prior art that the upper friction part of the horizontal scroll compressor cannot be fully lubricated, thereby providing a horizontal scroll compressor and an air conditioner.

[0006] In order to solve the above problems, the present disclosure provides a horizontal scroll compressor, which includes:

[0007] A casing, a fixed scroll, a movable scroll and a supporting structure, wherein the supporting structure is used to support the movable scroll, and a first oil return channel is also provided on the bottom inner peripheral wall of the casing and / or on the bottom outer peripheral wall of the fixed scroll, the first oil return channel can guide the oil in the exhaust gas to the bottom outer peripheral wall of the supporting structure, and an annular groove is provided on the outer peripheral wall of the supporting structure along its circumferential direction, the annular groove can guide the oil to the upper outer wall of the supporting structure, and further to the movable plate bearing chamber and the main bearing chamber inside the supporting structure.

[0008] In some embodiments, one end of the annular groove is located at the bottom of the support structure, and the other end reaches the top of the support structure along the circumferential direction; and / or, the annular groove is an arc groove of a non-full circle; and / or, the annular groove is a semicircular groove.

[0009] In some embodiments, the support structure includes a first axial end face connected to the stationary scroll plate, and a third oil return channel is opened on the outer peripheral wall of the support structure, one end of the third oil return channel extends to the first axial end face and is connected to the first oil return channel, and the other end extends to be connected to the annular groove.

[0010] In some embodiments, the third oil return passage extends along the axial direction of the support structure.

[0011] In some embodiments, a first flow guide hole is opened at the outer wall of the upper end of the support structure toward the interior of the support structure, and one end of the first flow guide hole is connected to the annular groove, and the other end is connected to the movable plate bearing chamber.

[0012] In some embodiments, a second guide hole and a third guide hole are further opened inside the support structure, one end of the second guide hole extends to communicate with the first guide hole, the other end extends to communicate with the third guide hole, and the other end of the third guide hole extends to communicate with the main bearing chamber.

[0013] In some embodiments, the first guide hole is a through hole, and the third guide hole is a through hole; and / or,

[0014] The first guide hole extends along the radial direction of the support structure, and the third guide hole extends along the radial direction of the support structure; and / or,

[0015] The second flow guide hole extends along the axial direction of the support structure, or the second flow guide hole extends along a direction which is inclined at an angle to the axial direction of the support structure, and the inclination angle is an acute angle.

[0016] In some embodiments, when the third guide hole extends along the radial direction of the support structure, the radial outer end of the third guide hole is connected to the outer peripheral wall of the support structure, the radial inner end of the third guide hole is connected to the main bearing chamber, and a first plug is provided at the radial outer end of the third guide hole.

[0017] In some embodiments, the support structure includes a second axial end surface on the opposite side of the fixed scroll plate, and one end of the second guide hole is connected to the second axial end surface and the other end is connected to the first guide hole, and a second plug is provided at the second axial end surface of the second guide hole.

[0018] In some embodiments, it also includes a head cover, which has an internal cavity, and the internal cavity can receive and connect the exhaust gas compressed from the fixed scroll disk, and a second oil return channel is opened on the bottom outer peripheral wall of the head cover, one end of the second oil return channel is connected to the internal cavity, and the other end is connected to the first oil return channel.

[0019] In some embodiments, an oil-gas separator is also provided in the internal cavity of the nose cover.

[0020] The present disclosure also provides an air conditioner, which includes the horizontal scroll compressor described in any of the preceding items.

[0021] The horizontal scroll compressor and air conditioner provided by the present disclosure have the following beneficial effects:

[0022] The present invention opens a first oil return channel on the bottom inner wall of the casing and / or the bottom outer wall of the static vortex plate, so that the oil in the exhaust gas of the static vortex plate can be guided to the outer peripheral wall therebetween, and further through the annular groove opened on the outer peripheral wall of the supporting structure, the oil can be effectively guided to the upper position of the supporting structure, and further guided to the moving plate bearing chamber and the main bearing chamber inside the supporting structure, thereby effectively utilizing the pressure of the high-pressure oil to guide the oil to the upper part of the horizontal scroll compressor to fully lubricate the upper friction parts, and the oil can also flow to the lower lubrication surface that needs to be lubricated under the action of gravity and rotating parts, and can lubricate the moving plate bearing part and the main bearing part, effectively solving the problem that the upper friction parts of the horizontal scroll compressor cannot be fully lubricated; and the present invention can also effectively have a throttling function through the outer wall and / or internal oil path structure of the supporting structure, effectively cancel the structure of the return oil throttling pin, and eliminate the influence of the throttling pin processing quality on the compressor performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the horizontal scroll compressor disclosed in the present invention;

[0024] Figure 2 is a cross-sectional view of the support structure of the horizontal scroll compressor disclosed in the present invention;

[0025] Figure 3 For the present disclosure Figure 2 A right side view of the middle support structure;

[0026] Figure 4 The three-dimensional structure of the horizontal scroll compressor support structure disclosed in the present invention Figure 1 ;

[0027] Figure 5 The three-dimensional structure of the horizontal scroll compressor support structure disclosed in the present invention Figure 2 .

[0028] The reference numerals are:

[0029] 1. Oil-gas separator; 2. Head cover; 20. Internal cavity; 2-1. Second oil return channel; 2-2. Head cover air inlet; 3. Stationary scroll; 3-1. Stationary disk exhaust port; 4. Moving scroll; 5. Casing; 5-1. First oil return channel; 6. Support structure; 6-1. First guide hole; 6-2. Second guide hole; 6-3. Third guide hole; 6-4. Main bearing chamber; 6-5. Moving disk bearing chamber; 6-6. Third oil return channel; 6-7. Annular groove; 61. First axial end face; 62. Second axial end face. DETAILED DESCRIPTION

[0030] like Figure 1-5 As shown, the present disclosure provides a horizontal scroll compressor, which includes:

[0031] A casing 5, a fixed scroll plate 3, a movable scroll plate 4 and a supporting structure 6, wherein the supporting structure 6 is used to support the movable scroll plate 4, and a first oil return channel 5-1 is also provided on the bottom inner peripheral wall of the casing 5 and / or on the bottom outer peripheral wall of the fixed scroll plate 3, wherein the first oil return channel 5-1 can guide the oil in the exhaust gas to the bottom outer peripheral wall of the supporting structure 6, and an annular groove 6-7 is provided on the outer peripheral wall of the supporting structure 6 along its circumferential direction, wherein the annular groove 6-7 can guide the oil to the upper outer wall of the supporting structure 6, and further to the movable plate bearing chamber 6-5 and the main bearing chamber 6-4 inside the supporting structure 6.

[0032] The present invention opens a first oil return channel on the bottom inner wall of the casing and / or the bottom outer wall of the static vortex plate, so that the oil in the exhaust gas of the static vortex plate can be guided to the outer peripheral wall therebetween, and further through the annular groove opened on the outer peripheral wall of the supporting structure, the oil can be effectively guided to the upper position of the supporting structure, and further guided to the moving plate bearing chamber and the main bearing chamber inside the supporting structure, thereby effectively utilizing the pressure of the high-pressure oil to guide the oil to the upper part of the horizontal scroll compressor to fully lubricate the upper friction parts, and the oil can also flow to the lower lubrication surface that needs to be lubricated under the action of gravity and rotating parts, and can lubricate the moving plate bearing part and the main bearing part, effectively solving the problem that the upper friction parts of the horizontal scroll compressor cannot be fully lubricated; and the present invention can also effectively have a throttling function through the outer wall and / or internal oil path structure of the supporting structure, effectively cancel the structure of the return oil throttling pin, and eliminate the influence of the throttling pin processing quality on the compressor performance.

[0033] In some embodiments, one end of the annular groove 6-7 is located at the bottom of the support structure 6, and the other end reaches the top of the support structure 6 along the circumferential direction; and / or, the annular groove 6-7 is an arc groove that is not a full-circle ring; and / or, the annular groove 6-7 is a semicircular ring groove. This is a further preferred structural form of the annular groove disclosed in the present invention, that is, one end of the annular groove is located at the bottom of the support structure, and oil can be sucked from the bottom and conducted to the top position, which can play a lubricating role on the top part; the annular groove does not need to be set as a full-circle ring structure, and it only needs to conduct the oil at the bottom to the top. It is preferably a semicircular ring groove, which effectively reduces the length of the groove opening and ensures the strength of the support structure.

[0034] In some embodiments, the support structure 6 includes a first axial end face 61 connected to the fixed scroll plate 3, and a third oil return channel 6-6 is provided on the outer peripheral wall of the support structure 6, one end of the third oil return channel 6-6 extends to the first axial end face 61 and communicates with the first oil return channel 5-1, and the other end extends to communicate with the annular groove 6-7. The present disclosure also provides a third oil return channel provided on the outer peripheral wall of the support structure, which can be connected to the first oil return channel and guide the oil in the first oil return channel to the annular groove, thereby ensuring that the oil smoothly enters the uppermost end of the support structure.

[0035] In some embodiments, the third oil return channel 6-6 extends along the axial direction of the support structure 6. This is a further preferred structural form of the third oil return channel of the present disclosure. Through the third oil return channel extending in the axial direction, oil can be guided in the axial direction, so that the first oil return channel is connected with the annular groove, and the first oil return channel can also be directly connected with the annular groove. At this time, the third oil return channel plays a role in increasing the flow area and enhancing the performance of guiding oil.

[0036] In some embodiments, a first guide hole 6-1 is opened at the outer wall of the upper end of the support structure 6 toward the inside of the support structure 6, and one end of the first guide hole 6-1 is connected to the annular groove 6-7, and the other end is connected to the movable plate bearing chamber 6-5. This is a further preferred structural form of the support structure disclosed in the present invention. The first guide hole provided inside the support structure can be connected to the annular groove to guide the oil in the annular groove to the movable plate bearing chamber through the first guide hole, so that the oil on the top of the support structure falls by gravity and is pushed by oil pressure to reach the movable plate bearing chamber, so as to effectively lubricate the movable plate bearing.

[0037] In some embodiments, a second guide hole 6-2 and a third guide hole 6-3 are further provided inside the support structure 6, one end of the second guide hole 6-2 extends to communicate with the first guide hole 6-1, and the other end extends to communicate with the third guide hole 6-3, and the other end of the third guide hole 6-3 extends to communicate with the main bearing chamber 6-4. The present disclosure also provides the second guide hole and the third guide hole, so that the second guide hole can be connected with the first guide hole to introduce oil from the first guide hole, and the third guide hole can be connected with the second guide hole to introduce oil into the main bearing chamber through the third guide hole, so as to effectively complete the lubrication of the main bearing.

[0038] In some embodiments, the first guide hole 6-1 is a through hole, and the third guide hole 6-3 is a through hole; and / or,

[0039] The first guide hole 6 - 1 extends along the radial direction of the support structure 6 , and the third guide hole 6 - 3 extends along the radial direction of the support structure 6 ; and / or,

[0040] The second flow guide hole 6 - 2 extends along the axial direction of the support structure 6 , or the second flow guide hole 6 - 2 extends along a direction that is inclined at an angle to the axial direction of the support structure 6 , and the inclination angle is an acute angle.

[0041] This is the preferred structural form of the first, second and third guide holes disclosed in the present invention. The first guide hole with a through hole structure and radial extension can be conveniently connected to the annular groove to suck in oil and radially guide it to the moving plate bearing chamber. The third guide hole with a through hole structure and radial extension can be conveniently connected to the second guide hole to suck in oil and radially guide it to the main bearing chamber. The second guide hole extends in the axial direction or in a direction inclined to the horizontal plane. It is further preferred that the position connected to the first guide hole is higher than the position connected to the third guide hole, so that the second guide hole is connected from the position connected to the first guide hole to the position connected to the third guide hole from high to low, so that the oil can reach the third guide hole by gravity, thereby improving the lubrication effect on the main bearing.

[0042] In some embodiments, when the third flow guide hole 6-3 extends in the radial direction of the support structure 6, the radial outer end of the third flow guide hole 6-3 is connected to the outer peripheral wall of the support structure 6, the radial inner end of the third flow guide hole 6-3 is connected to the main bearing chamber 6-4, and a first plug is provided at the radial outer end of the third flow guide hole 6-3. The first plug is preferably a screw. This is the preferred structural form of the third flow guide hole disclosed in the present invention, that is, the first plug is provided at its radial outer end, which can seal and plug the place, so as to prevent oil leakage from occurring there, and only allow oil to be introduced from the second flow guide hole.

[0043] In some embodiments, the support structure 6 includes a second axial end face 62 on the opposite side of the fixed scroll plate 3, and one end of the second guide hole 6-2 is connected to the second axial end face 62, and the other end is connected to the first guide hole 6-1, and a second plug is provided at the second axial end face 62 of the second guide hole 6-2. The second plug is preferably a screw. This is the preferred structural form of the second guide hole of the present invention, that is, a second plug is provided at its axial outer end, which can seal and plug the place, so as to prevent oil leakage from occurring there, and only allow oil to be introduced from the first guide hole.

[0044] In the scheme disclosed in the present invention, the support structure 6 is inserted into the housing 5 by interference fit, and the annular groove 6-7 and the third oil return channel 6-6 on the periphery of the support structure cooperate with the housing to form a closed channel. The lubricating oil flowing into the bottom of the head cover flows through the oil return channel 2-1, the first oil return channel 5-1, the third oil return channel 6-6, and the annular groove 6-7 in sequence under the action of the pressure difference. The lubricating oil flows upward in the channel of the annular groove 6-7, and when the lubricating oil reaches the first guide hole 6-1, it enters the first guide hole under the action of gravity. The lubricating oil entering the first guide hole is divided into two paths, one path flows along the through hole into the movable plate bearing chamber to lubricate the movable plate bearing, and the other path flows through the second guide hole 6-2 to the intersection of the third guide hole 6-3 and the inclined hole, and finally flows downstream along the second through hole to reach the main bearing to complete the lubrication of the main bearing. The ultimate purpose of the combination of the second guide hole 6-2 and the third guide hole 6-3 is to allow the lubricating oil to flow into the main bearing chamber instead of other parts. Therefore, in order to achieve this purpose, a screw is set at the outer end of the two holes, such as Figure 1 shown.

[0045] In some embodiments, a head cover 2 is also included, wherein the head cover 2 has an internal cavity 20, wherein the internal cavity 20 can receive and communicate with the exhaust gas compressed from the static scroll 3, and a second oil return channel 2-1 is provided on the bottom peripheral wall of the head cover 2, wherein one end of the second oil return channel 2-1 is communicated with the internal cavity 20, and the other end is communicated with the first oil return channel 5-1. The present disclosure also uses a head cover that can be connected to the shell to form an upper cover, so that the exhaust gas of the static scroll is introduced into the internal cavity, and oil and gas are separated in the internal cavity, and the oil separated from the bottom reaches the outer wall of the support structure along the second oil return channel and the first oil return channel, thereby lubricating the upper part of the support structure.

[0046] In some embodiments, an oil-gas separator 1 is further provided in the internal cavity 20 of the head cover 2. Preferably, it is a cyclone separator. The present disclosure can further play the role of oil-gas separation by providing an oil-gas separator in the internal cavity, and the lubricating oil is separated from the bottom and guided back to the friction part for lubrication.

[0047] The fixed scroll 3 and the orbiting scroll 4 form the compressor pump body. The refrigerant gas and lubricating oil mixture is compressed in the pump body and discharged from the fixed scroll exhaust port 3-1, and then flows into the head cover 2 through the head cover air inlet 2-2. When the mixed fluid encounters the oil-gas separator 1, the oil flows into the bottom of the head cover under the action of gravity, and the gas is discharged upward from the compressor.

[0048] The present disclosure also provides an air conditioner, which includes the horizontal scroll compressor described in any of the preceding items.

[0049] Considering that the presence of impurities in the lubricating oil may affect the flow of the oil and even cause blockage, an oil filter structure may be provided at the oil outlet of the second oil return channel 2-1 of the head cover, or a magnet may be placed at its inlet.

[0050] A channel is provided in the head cover and the corresponding part of the shell, and the two channels are connected. After the lubricating oil and the refrigerant mixed fluid are separated in the cyclone separator, the oil flows to the bottom of the head cover under the action of gravity, and then flows into the support structure along the connecting channel under the action of pressure difference;

[0051] An annular groove is provided on the outer periphery of the support structure, and a first guide hole is provided on the upper end, which is connected to the movable plate bearing chamber. A second guide hole is provided at a corresponding position on the upper part of the support structure, and the second guide hole is connected to the first guide hole. A third guide hole is provided at a corresponding part of the outer periphery of the main bearing, and the third guide hole is connected to the second guide hole. Under the action of the pressure difference, the lubricating oil flows along the annular groove to the upper part of the compressor, and then flows into the first guide hole. At this time, the lubricating oil is divided into two paths, one path flows into the movable plate bearing chamber along the first guide hole, and the other path flows into the main bearing chamber along the second guide hole and through the third guide hole.

[0052] The above is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure. The above is only a preferred implementation of the present disclosure. 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 disclosure, and these improvements and variations should also be regarded as the protection scope of the present disclosure.

Claims

1. A horizontal scroll compressor, characterized in that: include: A casing (5), a fixed scroll (3), a movable scroll (4) and a support structure (6), wherein the support structure (6) is used to support the movable scroll (4), and a first oil return channel (5-1) is provided on the bottom inner peripheral wall of the casing (5) and / or on the bottom outer peripheral wall of the fixed scroll (3), wherein the first oil return channel (5-1) is capable of guiding oil in the exhaust gas to the bottom outer peripheral wall of the support structure (6), and an annular groove (6-7) is provided on the outer peripheral wall of the support structure (6) along its circumferential direction, wherein the annular groove (6-7) is capable of guiding oil to the upper outer wall of the support structure (6), and further to the movable disk bearing chamber (6-5) and the main bearing chamber (6-4) inside the support structure (6).

2. The horizontal scroll compressor according to claim 1, characterized in that: One end of the annular groove (6-7) is located at the bottom of the support structure (6), and the other end reaches the top of the support structure (6) along the circumferential direction; and / or the annular groove (6-7) is an arc groove of a non-full circle; and / or the annular groove (6-7) is a semicircular groove.

3. The horizontal scroll compressor according to claim 1, characterized in that: The support structure (6) comprises a first axial end surface (61) connected to the fixed scroll (3), and a third oil return passage (6-6) is provided on the outer peripheral wall of the support structure (6), one end of the third oil return passage (6-6) extends to the first axial end surface (61) and communicates with the first oil return passage (5-1), and the other end extends to communicate with the annular groove (6-7).

4. The horizontal scroll compressor according to claim 3, characterized in that: The third oil return passage (6-6) extends along the axial direction of the support structure (6).

5. The horizontal scroll compressor according to claim 1, characterized in that: A first guide hole (6-1) is opened on the outer wall of the upper end of the support structure (6) toward the interior of the support structure (6); one end of the first guide hole (6-1) is connected to the annular groove (6-7) and the other end is connected to the movable plate bearing chamber (6-5).

6. The horizontal scroll compressor according to claim 5, characterized in that: A second flow guide hole (6-2) and a third flow guide hole (6-3) are also provided inside the support structure (6); one end of the second flow guide hole (6-2) extends to communicate with the first flow guide hole (6-1), and the other end extends to communicate with the third flow guide hole (6-3); the other end of the third flow guide hole (6-3) extends to communicate with the main bearing chamber (6-4).

7. The horizontal scroll compressor according to claim 6, characterized in that: The first guide hole (6-1) is a through hole, and the third guide hole (6-3) is a through hole; and / or, The first guide hole (6-1) extends along the radial direction of the support structure (6), and the third guide hole (6-3) extends along the radial direction of the support structure (6); and / or, The second flow guide hole (6-2) extends along the axial direction of the support structure (6), or the second flow guide hole (6-2) extends along a direction that is inclined at an angle to the axial direction of the support structure (6), and the inclination angle is an acute angle.

8. The horizontal scroll compressor according to claim 7, characterized in that: When the third guide hole (6-3) extends in the radial direction of the support structure (6), the radial outer end of the third guide hole (6-3) is connected to the outer peripheral wall of the support structure (6), the radial inner end of the third guide hole (6-3) is connected to the main bearing chamber (6-4), and a first plug is provided at the radial outer end of the third guide hole (6-3).

9. The horizontal scroll compressor according to claim 6, characterized in that: The support structure (6) comprises a second axial end surface (62) on the opposite side to the fixed scroll (3), and one end of the second guide hole (6-2) is connected to the second axial end surface (62), and the other end is connected to the first guide hole (6-1), and a second plug is provided at the second axial end surface (62) of the second guide hole (6-2).

10. The horizontal scroll compressor according to any one of claims 1 to 9, characterized in that: The invention also comprises a head cover (2), wherein the head cover (2) has an internal cavity (20), wherein the internal cavity (20) is capable of receiving and communicating with exhaust gas compressed from the fixed scroll (3), and a second oil return channel (2-1) is provided on the bottom peripheral wall of the head cover (2), wherein one end of the second oil return channel (2-1) is communicated with the internal cavity (20), and the other end is communicated with the first oil return channel (5-1).

11. The horizontal scroll compressor according to claim 10, characterized in that: An oil-gas separator (1) is also provided in the internal cavity (20) of the engine head cover (2).

12. An air conditioner, characterized in that: A horizontal scroll compressor comprising any one of claims 1-11.

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