Compressor pump, compressor, and air conditioner

Abstract

Provided in the embodiments of the present disclosure are a compressor pump, a compressor, and an air conditioner. The compressor pump comprises two cylinders spaced apart in an axial direction. Each cylinder is provided with a suction port and a discharge port, and a first region is formed between the suction port and the discharge port. A partition plate is disposed between the two cylinders, the partition plate comprises a first end surface and a second end surface spaced apart in the axial direction, a first thermal insulation hole is formed inside the partition plate and is located between the first end surface and the second end surface, and in the axial direction, the first thermal insulation hole is disposed opposite the first region between the suction port and the discharge port of the cylinder. According to the embodiments of the present disclosure, heat transfer from the high-temperature side of the cylinder to the suction side of the cylinder through the solid body of the partition plate can be suppressed, thereby reducing the suction temperature rise on the suction side of the cylinder, increasing the refrigerant suction volume, and improving compressor performance.

Description

Compressor pump body, compressor and air conditioner

[0001] This disclosure is based on and claims priority to CN application No. 202411903180.4, filed on December 23, 2024, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0002] This disclosure relates to the field of compressor technology, specifically to a compressor pump body, a compressor, and an air conditioner. Background Technology

[0003] During compressor operation, the low-temperature, low-pressure refrigerant on the suction side is compressed into a high-temperature, high-pressure refrigerant within the cylinder. As a result, the cylinder temperature distribution is low on the suction side and high on the discharge side. Furthermore, the high-temperature side transfers heat to the low-temperature side through the cylinder body, causing the cylinder temperature on the suction side to be higher than the suction temperature. This results in the refrigerant expanding due to heat during the suction process, reducing the cylinder's volume utilization rate and decreasing the refrigerant mass per unit volume, ultimately leading to a decline in compressor performance.

[0004] In twin-cylinder and multi-cylinder compressors, a partition is installed between the cylinders (refer to Figure 1). The exhaust side positions of the upper and lower cylinders of the partition are axially aligned. Therefore, the partition position corresponding to the exhaust side of the cylinder experiences heat accumulation and becomes a high-temperature side. This heat is transferred to the intake side of the cylinder through the partition, causing the intake side temperature to rise, reducing the quality of refrigerant intake, and decreasing compressor performance.

[0005] The oil temperature in the compressor oil sump is higher on the pump body side and lower near the bottom of the compressor oil sump. At the same time, the temperature on the cylinder exhaust side is higher than the oil temperature, and the oil temperature is higher than the cylinder intake temperature. Therefore, the heat in the oil sump is transferred to the cylinder intake side through the partition and cylinder body, resulting in an increase in the intake side temperature and a decrease in compressor performance.

[0006] Therefore, in some related technologies, there is a high-temperature heat transfer path from the compressor cylinder to the suction side, which leads to technical problems such as increased suction side temperature and decreased compressor performance. Summary of the Invention

[0007] This disclosure provides a compressor pump body, including:

[0008] Two cylinders are spaced apart along the axial direction. Each cylinder is provided with an intake port and an exhaust port. A first region is formed between the intake port and the exhaust port.

[0009] A partition is disposed between the two cylinders. The partition includes a first end face and a second end face arranged at intervals along the axial direction. A first heat insulation hole is provided inside the partition. The first heat insulation hole is located between the first end face and the second end face, and is disposed opposite to the first region in the axial direction.

[0010] In some embodiments, the partition is disposed between two adjacent cylinders. The partition includes a first axial end face and a second axial end face, which are disposed opposite to each other. A first heat insulation hole is provided inside the partition. The first heat insulation hole is located between the first axial end face and the second axial end face, and does not contact the first axial end face or the second axial end face, respectively. In the axial direction of the partition, the first heat insulation hole is opposite to a first region between the intake port and the exhaust port of the cylinder.

[0011] In some embodiments, the cylinder is further provided with a vane groove, which is located between the intake port and the exhaust port, and the first region is the region including the vane groove.

[0012] In some embodiments, the first heat insulation hole is a hole opened from the outer peripheral surface of the partition towards the radially inner side of the partition.

[0013] In some embodiments, within the projection plane of the axial end face of the cylinder, the vane groove has a vane groove central axis, the first heat insulation hole has a first heat insulation hole central axis, the intake hole has an intake hole central axis, the included angle between the first heat insulation hole central axis and the vane groove central axis is a1, the included angle between the intake hole central axis and the vane groove central axis is b, and a1≤b.

[0014] In some embodiments, the partition plate is further provided with a second heat insulation hole, and the cylinder has a second region between the intake hole and the exhaust hole, the second region being a region excluding the sliding vane groove, and the second heat insulation hole is disposed opposite to the second region in the axial direction.

[0015] In some embodiments, within the projection plane of the axial end face of the cylinder, the second heat insulation hole has a second heat insulation hole central axis, the first heat insulation hole has a first heat insulation hole central axis, and the included angle between the second heat insulation hole central axis and the first heat insulation hole central axis is a2, with a2 ≤ 180°.

[0016] In some embodiments, a heat insulation layer is further provided on the radial outer periphery of the partition plate, and the heat insulation layer is arranged radially opposite to the air intake hole of the cylinder within the projection plane of the axial end face of the cylinder.

[0017] In some embodiments, within the axial projection plane of the partition, one circumferential end of the heat insulation layer is connected to the first heat insulation hole, and the other circumferential end of the heat insulation layer extends toward the side away from the sliding groove, and the circumferential extension angle of the heat insulation layer is g, and g≤180°.

[0018] In some embodiments, along the axial direction, the maximum height of the first heat insulation hole is c1, the maximum height of the second heat insulation hole is c2, the axial thickness of the partition is d1, and c1 < d1, c2 < d1.

[0019] In some embodiments, the first heat insulation hole extends from the outer peripheral surface of the partition towards the interior of the partition, with a maximum depth of e1. The second heat insulation hole extends from the outer peripheral surface of the partition towards the interior of the partition, with a maximum depth of e2. The partition is an annular structure with a radial width of f, where e1 < f and e2 < f.

[0020] In some embodiments, the first heat insulation hole is fan-shaped or polygonal in the axial projection plane of the partition; the second heat insulation hole is fan-shaped or polygonal in the axial projection plane of the partition.

[0021] In some embodiments, the insulation layer is a coating or sheet material with a thermal conductivity lower than that of the partition and lower than that of the cylinder.

[0022] This disclosure also provides a compressor pump body, which includes the aforementioned partition and a cylinder, and the cylinder is further provided with a vane groove and a third heat insulation hole, the third heat insulation hole being located in a second region between the intake hole and the exhaust hole on the cylinder, the second region being a region excluding the vane groove.

[0023] In some embodiments, the two cylinders include a first cylinder and a second cylinder, the first cylinder being located at one axial end of the partition, and the second cylinder being located at the other axial end of the partition. The third heat insulation hole is formed in a second region between the first cylinder's intake port and the exhaust port, and the third heat insulation hole is also formed in a second region between the second cylinder's intake port and the exhaust port.

[0024] In some embodiments, when the partition plate is further provided with a second heat insulation hole, the second heat insulation hole is axially opposite to the third heat insulation hole on the first cylinder and the third heat insulation hole on the second cylinder.

[0025] In some embodiments, the second heat insulation hole does not penetrate the axial end faces of the partition plate, the third heat insulation hole on the first cylinder does not penetrate the axial end faces of the first cylinder, and the third heat insulation hole on the second cylinder does not penetrate the axial end faces of the second cylinder.

[0026] Alternatively, the second heat insulation hole penetrates both axial end faces of the partition plate, the third heat insulation hole on the first cylinder penetrates both axial end faces of the first cylinder, and the third heat insulation hole on the second cylinder penetrates both axial end faces of the second cylinder, so that the second heat insulation hole, the third heat insulation hole on the first cylinder, and the third heat insulation hole on the second cylinder are connected along the axial direction.

[0027] In some embodiments, the second heat insulation hole, the third heat insulation hole on the first cylinder, and the third heat insulation hole on the second cylinder constitute a group of heat insulation units, and there are multiple groups of heat insulation units arranged at intervals.

[0028] This disclosure also provides a compressor that includes the aforementioned compressor pump body.

[0029] This disclosure also provides an air conditioner that includes the aforementioned compressor.

[0030] The compressor pump body, compressor, and air conditioner disclosed herein have at least the following beneficial effects:

[0031] 1. This disclosure, by providing a first heat insulation hole on the partition plate, and having the first heat insulation hole positioned opposite to the first region between the intake and exhaust ports on the cylinder, can disrupt the heat accumulation on the high-temperature exhaust side of the cylinder at the partition plate, greatly suppressing heat exchange in the regions on both sides of the first heat insulation hole (especially on both sides of the vane groove), suppressing heat transfer from the high-temperature side of the cylinder to the intake side of the cylinder through the partition plate, reducing the intake temperature rise on the intake side of the cylinder, increasing the refrigerant intake volume, and improving compressor performance. Furthermore, since the first heat insulation hole of this disclosure is located between the axial end faces of the partition plate and does not contact the axial end faces, it is effectively located inside the partition plate. Compared to a structure with grooves on the surface, this further enhances the effect of disrupting heat accumulation and improves the sealing effect between the cylinder and the partition plate, effectively alleviating the problem in related technologies where there is a heat transfer path from the high-temperature side of the compressor cylinder to the intake side, leading to an increase in intake side temperature and a decrease in compressor performance.

[0032] 2. This disclosure further suppresses the transfer of high temperature from the cylinder exhaust side to the cylinder intake side along the partition body by providing a second heat insulation hole on the partition plate, and the second heat insulation hole is arranged opposite to a second region between the intake hole and the exhaust hole on the cylinder. The second region is a region excluding the vane groove. In particular, it suppresses the transfer of heat from the exhaust hole to the region away from the vane groove to the intake hole, thereby affecting the intake temperature rise on the cylinder intake side, further increasing the refrigerant intake volume, and further improving the compressor performance. This disclosure further uses a heat insulation layer arranged on the outer peripheral wall of the partition plate opposite to the intake hole to effectively suppress the heat transfer of high temperature oil pool to the cylinder intake side through the partition body, further suppressing the intake temperature rise on the cylinder intake side, further increasing the refrigerant intake volume and improving the compressor performance.

[0033] This disclosure significantly reduces the intake temperature rise on the cylinder intake side, increases the refrigerant intake volume, and improves compressor performance through the above three aspects. Attached Figure Description

[0034] Figure 1 is a top view of the partition structure in the prior art;

[0035] Figure 2 is a top view (partial cross-sectional view) of the partition embodiment 1 of this disclosure;

[0036] Figure 3 is a front view of the structure in Figure 2;

[0037] Figure 4 is a top view (partial cross-sectional view) of the partition embodiment 2 of this disclosure;

[0038] Figure 5 is a front view of the structure in Figure 4;

[0039] Figure 6 is a top view (partial cross-sectional view) of the partition embodiment 3 of this disclosure;

[0040] Figure 7 is a front view of the structure in Figure 6;

[0041] Figure 8 is a top view (partial cross-sectional view) of the cylinder that cooperates with the partition of Embodiment 3 in Figure 6;

[0042] Figure 9 is a front view of the structure in Figure 8;

[0043] Figure 10 is an assembly structure diagram of the partition plate of Embodiment 3 in Figure 6 and the cylinder in Figure 8;

[0044] Figure 11 is a top view (partial cross-sectional view) of the partition embodiment 4 of this disclosure;

[0045] Figure 12 is a front view of the structure in Figure 11;

[0046] Figure 13 is a top view (partial cross-sectional view) of the cylinder that cooperates with the partition of Embodiment 4 in Figure 11;

[0047] Figure 14 is an assembly structure diagram of the partition plate of Embodiment 4 in Figure 11 and the cylinder in Figure 13;

[0048] Figure 15 is a graph showing the relationship between the compressor capacity (cooling capacity) and motor frequency of the present disclosure.

[0049] The reference numerals in the attached drawings are as follows: 1. partition plate; 2. cylinder; 21. first cylinder; 22. second cylinder; 3. first end face; 4. second end face; 5. intake port; 6. exhaust port; 7. first region; 8. sliding vane groove; 9. central axis of sliding vane groove; 10. central axis of first heat insulation hole; 11. central axis of intake port; 12. second region; 13. central axis of second heat insulation hole; 14. screw hole; 101. first heat insulation hole; 102. second heat insulation hole; 103. heat insulation layer; 202. third heat insulation hole. Detailed Implementation

[0050] The technical solutions in the embodiments of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0051] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure.

[0052] This disclosure provides a compressor pump body, a compressor, and an air conditioner to alleviate the defects in related technologies where a high-temperature heat transfer path exists in the compressor cylinder towards the suction side, leading to increased suction side temperature and decreased compressor performance.

[0053] As shown in Figure 2-15, this disclosure provides a compressor pump body, which includes two cylinders 2 and a partition 1 arranged axially spaced apart.

[0054] Each cylinder 2 is provided with an intake port 5 and an exhaust port 6, and there is a first region 7 between the intake port 5 and the exhaust port 6.

[0055] The partition 1 is located between the two cylinders 2. The partition 1 includes a first end face 3 and a second end face 4 arranged at intervals along the axial direction. The partition 1 has a first heat insulation hole 101 inside. The first heat insulation hole 101 is located between the first end face 3 and the second end face 4, and is axially opposite to the first region 7.

[0056] This disclosure, by providing a first heat insulation hole 101 on the partition 1, and having the first heat insulation hole 101 opposite to the first region 7 between the intake hole 5 and the exhaust hole 6 on the cylinder 2, can disrupt the heat accumulation on the high-temperature exhaust side of the cylinder at the partition 1, greatly suppressing heat exchange in the regions on both sides of the first heat insulation hole 101 (especially on both sides of the vane groove), and suppressing heat transfer from the high-temperature side of the cylinder to the intake side of the cylinder through the partition body, reducing the intake temperature rise on the intake side of the cylinder, increasing the refrigerant intake volume, and improving compressor performance.

[0057] As shown in Figure 2-15, a partition 1 is disposed between two adjacent cylinders 2. The partition 1 includes an axial first end face 3 and an axial second end face 4, which are arranged opposite to each other. A first heat insulation hole 101 is provided inside the partition. The first heat insulation hole 101 is located between the axial first end face 3 and the axial second end face 4, and does not contact the axial first end face 3 and the axial second end face 4, respectively. In the axial direction of the partition 1, the first heat insulation hole 101 is opposite to the first region 7 between the intake hole 5 and the exhaust hole 6 of the cylinder 2.

[0058] This disclosure utilizes a first heat insulation hole 101 disposed on the partition 1 and opposite to the first region 7 between the intake hole 5 and the exhaust hole 6 on the cylinder 2. This can disrupt the heat accumulation on the high-temperature exhaust side of the cylinder at the partition 1, greatly suppressing heat exchange in the regions on both sides of the first heat insulation hole 101 (especially on both sides of the vane groove). It also suppresses heat transfer from the high-temperature side of the cylinder to the intake side of the cylinder through the partition body, reducing the intake temperature rise on the intake side of the cylinder, increasing the refrigerant intake volume, and improving compressor performance. Furthermore, since the first heat insulation hole 101 of this disclosure is opened between the two axial end faces and does not contact the two axial end faces, it is effectively located inside the partition 1. Compared with the structure with grooves on the surface, it can further improve the effect of disrupting heat accumulation and improve the sealing effect between the cylinder 2 and the partition 1. This effectively solves the problem in related technologies where there is a heat transfer path from the high-temperature side of the compressor cylinder to the intake side, resulting in an increase in the intake side temperature and a decrease in compressor performance.

[0059] In some embodiments, the cylinder 2 is also provided with a sliding vane groove 8, which is located between the intake port 5 and the exhaust port 6, and the first region 7 is the region including the sliding vane groove 8.

[0060] In some embodiments, the first heat insulation hole 101 is a hole opened from the outer peripheral surface of the partition 1 toward the radially inner side of the partition 1.

[0061] This is the preferred location of the first region 7 of this disclosure, namely the region including the vane groove 8. Since the heat from the exhaust port 6 in this region is easily transferred to the intake port 5 and affects the intake temperature rise on the cylinder intake side, a first heat insulation hole 101 is provided in the first region 7. This can effectively suppress the high temperature heat from the exhaust port 6 on one side of the vane groove 8 from being transferred to the intake port 5 region on the other side of the vane groove 8 via the partition 1. This prevents the high temperature side of the cylinder from transferring heat to the cylinder intake side through the partition body (the first region 7 opposite to the vane groove 8), thereby reducing the intake temperature rise on the cylinder intake side, increasing the refrigerant intake volume, and improving the compressor performance. The first heat insulation hole 101 of this disclosure is preferably opened from the outer peripheral surface of the partition 1 in a radially inward direction, which can form a heat insulation structure that blocks heat transfer.

[0062] In some embodiments, when the cylinder 2 is also provided with a sliding vane groove 8, in the projection plane of the axial end face of the cylinder 2, the sliding vane groove 8 has a sliding vane groove central axis 9, the first heat insulation hole 101 has a first heat insulation hole central axis 10, the suction hole 5 has a suction hole central axis 11, the included angle between the first heat insulation hole central axis 10 and the sliding vane groove central axis 9 is a1, the included angle between the suction hole central axis 11 and the sliding vane groove central axis 9 is b, and a1≤b.

[0063] This disclosure ensures that the angle a1 between the central axis 10 of the first heat insulation hole and the central axis 9 of the vane groove is less than or equal to the angle b between the central axis 11 of the suction hole and the central axis 9 of the vane groove. This allows the area of ​​the first heat insulation hole 101 to be located in the area opposite to the suction hole 5 and the vane groove 8. This effectively suppresses the high-temperature heat at the exhaust hole on one side of the vane groove 8 from being transferred to the suction hole 5 area on the other side of the vane groove 8 via the partition 1. This prevents the high-temperature side of the cylinder from transferring heat to the suction side of the cylinder through the partition body (the first area 7 opposite to the vane groove 8), thereby reducing the suction temperature rise on the suction side of the cylinder, increasing the refrigerant suction volume, and improving the compressor performance.

[0064] In some embodiments, the partition 1 is further provided with a second heat insulation hole 102, and the cylinder 2 has a second region 12 between the intake hole 5 and the exhaust hole 6. The second region 12 is a region excluding the sliding groove 8, and the second heat insulation hole 102 is arranged opposite to the second region 12 in the axial direction of the partition 1.

[0065] This disclosure also provides a second heat insulation hole 102 on the partition 1, and the second heat insulation hole 102 is positioned opposite to the second region 12 between the intake hole 5 and the exhaust hole 6 on the cylinder 2. The second region 12 is the region excluding the vane groove 8. This can further suppress the high temperature on the cylinder exhaust side from being transferred to the cylinder intake side along the partition body, especially suppressing the heat transfer from the exhaust hole 6 to the region away from the vane groove 8 to the intake hole 5, thereby affecting the intake temperature rise on the cylinder intake side, further increasing the refrigerant intake volume, and further improving the compressor performance.

[0066] In some embodiments, within the projection plane of the axial end face of the cylinder 2, the vane groove 8 has a vane groove central axis 9, the second heat insulation hole 102 has a second heat insulation hole central axis 13, the first heat insulation hole 101 has a first heat insulation hole central axis 10, and the included angle between the second heat insulation hole central axis 13 and the first heat insulation hole central axis 10 is a2, and a2≤180°.

[0067] This disclosure, by setting the second region 12 where the second heat insulation hole 102 is located to have an angle between the central axis 13 of the second heat insulation hole and the central axis 10 of the first heat insulation hole within a range of 180°, can effectively suppress the transfer of heat from the exhaust hole 6 to the region of the intake hole 5 in the direction away from the vane groove 8 via the partition body, avoid affecting the intake temperature rise on the cylinder intake side, further increase the refrigerant intake volume, further improve the compressor performance, and also reduce the opening of the hole structure to ensure the structural strength of the partition.

[0068] In some embodiments, a heat insulation layer 103 is also provided on the radial outer periphery of the partition 1. In the projection plane of the axial end face of the cylinder 2, the heat insulation layer 103 is arranged radially opposite to the air intake hole 5 of the cylinder 2.

[0069] This disclosure further utilizes a heat insulation layer 103 disposed on the outer peripheral wall of the partition 1 opposite to the suction hole 5, which can effectively suppress the heat transfer from the high-temperature oil pool to the cylinder suction side through the partition body, further suppress the temperature rise of the suction side of the cylinder suction, further increase the refrigerant suction volume and improve the compressor performance.

[0070] In some embodiments, when the cylinder 2 is also provided with a sliding vane groove 8, in the axial projection plane of the partition plate 1, one circumferential end of the heat insulation layer 103 is connected to the first heat insulation hole 101, and the other circumferential end of the heat insulation layer 103 extends toward the side away from the sliding vane groove 8, and the circumferential extension angle of the heat insulation layer 103 is g, and g≤180°.

[0071] This disclosure, by setting the area where the heat insulation layer 103 is located to extend within a range of 180° from the position where it connects to the first heat insulation hole 101 in the direction away from the vane groove 8, can further suppress the heat transfer from the high-temperature oil pool to the cylinder suction side through the partition body, further suppress the temperature rise of the suction side of the cylinder, further improve the refrigerant suction volume and enhance the compressor performance.

[0072] In some embodiments, along the axial direction of the partition 1, the maximum height of the first heat insulation hole 101 is c1, the maximum height of the second heat insulation hole 102 is c2, the axial thickness of the partition 1 is d1, and c1 < d1, c2 < d1.

[0073] This disclosure sets the height c1 of the first heat insulation hole 101 along the axial direction to be less than the axial thickness d1 of the partition 1. This ensures the heat insulation performance of the first region 7 to the suction hole 5 while also improving the structural strength of the partition 1 in the first region 7, thus preventing the pump body from deforming and leaking at that location. Similarly, by setting the height c2 of the second heat insulation hole 102 along the axial direction to be less than the axial thickness d1 of the partition 1, this disclosure ensures the heat insulation performance of the suction hole 5 while also improving the structural strength of the partition 1 in the second region 12, thus preventing the pump body from deforming and leaking at that location.

[0074] In some embodiments, the first heat insulation hole 101 extends from the outer peripheral surface of the partition 1 toward the interior of the partition 1, and the maximum depth of the first heat insulation hole 101 is e1. The second heat insulation hole 102 extends from the outer peripheral surface of the partition 1 toward the interior of the partition 1, and the maximum depth of the second heat insulation hole 102 is e2. The partition 1 is an annular structure, and the radial length of the annular structure is equal to the radial width of the partition 1, which is f, and e1 < f, e2 < f.

[0075] The outer diameter of the ring structure minus the inner diameter of the ring structure equals twice the radial width of partition 1.

[0076] This disclosure, by preferably setting the depth e1 of the first heat insulation hole 101 in the radial direction to be less than the radial width f of the partition 1, can improve the structural strength of the partition 1 in the first region 7 while ensuring the heat insulation performance of the air intake holes 5 in the first region 7, thus preventing the pump body from deforming and leaking at that location; by preferably setting the depth e2 of the second heat insulation hole 102 in the radial direction to be less than the radial width f of the partition 1, can improve the structural strength of the partition 1 in the second region 12 while ensuring the heat insulation performance of the air intake holes 5 in the second region 12, thus preventing the pump body from deforming and leaking at that location.

[0077] In some embodiments, the first heat insulation hole 101 is fan-shaped or polygonal in the axial projection plane of the partition 1; the second heat insulation hole 102 is fan-shaped or polygonal in the axial projection plane of the partition 1.

[0078] These are the preferred shapes and structural forms of the first heat insulation hole 101 and the second heat insulation hole 102 disclosed herein, as shown in Figures 2-3 (Example 1, a cylinder with a rectangular axial projection), Figures 4-5 (Example 2, a sector with a fan-shaped axial projection), and Figures 6-7 (Example 3, a polygon with a polygonal axial projection).

[0079] In Figure 2-3, a first heat insulation hole 101 is opened on the partition 1. The first heat insulation hole 101 is a circular hole, and its central axis 10 is located between the central axis 11 of the cylinder's intake hole and the central axis 9 of the vane groove. When the cylinder compresses gas, the cylinder exhaust side is the high-temperature side. At the same time, the vane groove 8 and the vane are in surface contact, and the vane moves, generating heat through friction. Therefore, the cylinder is still at the high-temperature side at the vane groove 8 position, and a heat insulation hole needs to be opened at the corresponding partition position to suppress heat accumulation and transfer. When the cylinder compresses gas, there are three steps: intake, compression, and exhaust. That is, the cylinder exhaust side has the highest temperature, the cylinder compression side has a moderate temperature, and the cylinder intake side has the lowest temperature. In order to suppress the high temperature on the cylinder exhaust side from the compression side to the intake side, heat insulation holes are needed. A second heat insulation hole 102 is opened on the partition plate 1. The angle between the central axis of the second heat insulation hole 102 and the central axis of the first heat insulation hole 101 is less than or equal to 180°. The oil temperature in the compressor oil sump is higher than the suction temperature of the cylinder suction port. In order to suppress the transfer of oil sump temperature to the cylinder suction side, a heat insulation layer is added to the partition plate 1. The heat transfer resistance is increased by means of heat insulation coating or heat insulation board, which reduces the suction temperature rise of the refrigerant on the suction side, which is conducive to increasing the refrigerant suction volume and improving the performance of the compressor.

[0080] In Figure 4, the radial cross-section of the first heat insulation hole 101 and the second heat insulation hole 102 is fan-shaped (triangular), which further suppresses circumferential heat transfer.

[0081] Furthermore, in Figure 6, the radial cross-section of the first heat insulation hole 101 and the second heat insulation hole 102 is quadrilateral, which has a better effect on suppressing circumferential heat transfer.

[0082] In some embodiments, the insulation layer 103 is a coating or sheet material with a thermal conductivity lower than that of the partition 1 and lower than that of the cylinder 2.

[0083] This is a preferred material for the heat insulation layer 103 disclosed herein, namely, its thermal conductivity is lower than that of the partition 1 and the cylinder 2, which can greatly improve the effect of suppressing the heat transfer from the high-temperature oil pool to the intake side of the cylinder through the partition body.

[0084] In this disclosure, the contact area between the solids on both sides of the heat insulation hole is reduced by the heat insulation hole, thereby reducing heat transfer; the thermal resistance is increased by the heat insulation layer, further reducing heat transfer. In dual-cylinder and higher compressors, heat on the exhaust side accumulates at the corresponding location on the partition. The first heat insulation hole 101 in this disclosure is used to disrupt heat accumulation at the partition 1, while simultaneously reducing the heat transfer area on both sides of the heat insulation hole, thereby suppressing heat transfer from the high-temperature side of the heat insulation hole to the low-temperature side. The second heat insulation hole 102 is used to suppress heat transfer from the high-temperature exhaust side of the cylinder to the cylinder intake side through the partition solid. The low thermal conductivity insulation layer 103 is used to suppress heat transfer from the high-temperature oil sump to the cylinder intake side through the partition solid. Through these three aspects, the aim is to reduce the intake temperature rise on the cylinder intake side, increase the refrigerant intake volume, and improve compressor performance.

[0085] The compressor pump body provided in this disclosure includes the aforementioned partition 1 and a cylinder 2. A third heat insulation hole 202 is also provided on the cylinder 2. The third heat insulation hole 202 is located in the second region 12 between the intake hole 5 and the exhaust hole 6 on the cylinder 2. When the cylinder 2 is also provided with a vane groove 8, the second region 12 is the region excluding the vane groove 8.

[0086] This disclosure also provides a third heat insulation hole 202 on the cylinder 2, which is a second region 12 between the intake port 5 and the exhaust port 6, excluding the vane groove 8. This can further suppress the transfer of high temperature from the exhaust side of the cylinder to the intake side of the cylinder along the partition body, especially suppressing the transfer of heat from the exhaust port 6 to the region away from the vane groove 8 to the intake port 5, thereby affecting the intake temperature rise on the intake side of the cylinder, further increasing the refrigerant intake volume, and further improving the compressor performance.

[0087] In some embodiments, cylinder 2 includes a first cylinder 21 and a second cylinder 22. The first cylinder 21 is located at one axial end of the partition 1, and the second cylinder 22 is located at the other axial end of the partition 1. A third heat insulation hole 202 is provided in a second region 12 between its intake hole 5 and exhaust hole 6 on the first cylinder 21, and a third heat insulation hole 202 is also provided in the second region 12 between its intake hole 5 and exhaust hole 6 on the second cylinder 22.

[0088] The present disclosure preferably provides a structure in which the first cylinder 21 and the second cylinder 22 at both axial ends of the partition 1 are provided with a third heat insulation hole 202. This structure can suppress the high temperature on the exhaust side of the first cylinder 21 and the second cylinder 22 from being transferred along the partition body to the intake side of the first cylinder 21 and the second cylinder 22. In particular, it suppresses the heat transfer from the exhaust hole 6 to the area away from the vane groove 8 to the intake hole 5, thereby affecting the intake temperature rise on the intake side of the first cylinder 21 and the second cylinder 22, further increasing the refrigerant intake volume, and further improving the compressor performance.

[0089] In some embodiments, when the partition 1 is also provided with a second heat insulation hole 102, the second heat insulation hole 102 is arranged axially opposite to the third heat insulation hole 202 on the first cylinder 21 and the third heat insulation hole 202 on the second cylinder 22.

[0090] The second heat insulation hole 102 on the preferred partition 1 is axially opposite to the third heat insulation hole 202 on the first cylinder 21 and the third heat insulation hole 202 on the second cylinder 22, which can integrally process the three heat insulation holes, improve the convenience of processing, and effectively improve the heat insulation performance.

[0091] In some embodiments, the second heat insulation hole 102 does not penetrate the axial end faces of the partition 1, the third heat insulation hole 202 on the first cylinder 21 does not penetrate the axial end faces of the first cylinder 21, and the third heat insulation hole 202 on the second cylinder 22 does not penetrate the axial end faces of the second cylinder 22; or, the second heat insulation hole 102 penetrates the axial end faces of the partition 1, the third heat insulation hole 202 on the first cylinder 21 penetrates the axial end faces of the first cylinder 21, and the third heat insulation hole 202 on the second cylinder 22 penetrates the axial end faces of the second cylinder 22, so that the second heat insulation hole 102, the third heat insulation hole 202 on the first cylinder 21, and the third heat insulation hole 202 on the second cylinder 22 are axially connected.

[0092] This is a preferred structural form of the three heat insulation holes disclosed herein. As shown in Figure 10, the preferred form is three heat insulation holes that are not axially penetrating and are axially opposite. Another preferred structural form is shown in Figure 14, which is three heat insulation holes that are axially penetrating.

[0093] When the partition is actually assembled with the cylinder, in order to better suppress the heat transfer from the high temperature side to the cylinder intake side, a cylinder heat insulation hole (third heat insulation hole 202) is opened on the cylinder, as shown in Figure 6-9, to suppress the heat transfer from the high temperature side of the cylinder exhaust side to the cylinder intake side through the compression side.

[0094] In Figure 11-14, considering the processing technology, the second heat insulation hole 102 and the third heat insulation hole 202 on the partition are set as axial circular through holes. The number of through holes is unlimited. This shape has a simple processing technology.

[0095] In some embodiments, the second heat insulation hole 102 arranged in the axial direction, the third heat insulation hole 202 on the first cylinder 21, and the third heat insulation hole 202 on the second cylinder 22 form a heat insulation unit. There are multiple sets of heat insulation units, and the multiple sets of heat insulation units are arranged at intervals.

[0096] This disclosure, by using multiple second heat insulation holes 102 and multiple third heat insulation holes 202, which are spaced apart along the circumferential direction, can enhance the heat insulation effect on the cylinder suction side, further reduce the suction temperature rise on the cylinder suction side, increase the refrigerant suction volume, and improve the compressor performance.

[0097] This disclosure also provides a compressor that includes the aforementioned compressor pump body.

[0098] This disclosure is based on compressors with two or more cylinders. In addition to the cylinder body, the diaphragm body is also an important heat transfer path. Blocking the heat transfer between the cylinder and the diaphragm and reducing the intake temperature rise on the intake side of the cylinder are effective ways to improve the performance of the compressor.

[0099] The partition, cylinder, and compressor disclosed herein suppress the heat transfer path from the high-temperature side to the cylinder suction side, reduce the refrigerant suction temperature rise, increase the refrigerant suction volume, and achieve compression within the cylinder at a lower initial refrigerant temperature, thereby improving the compressor performance and solving the problems of rapid high-frequency performance degradation and insufficient capacity of dual-cylinder and above compressors.

[0100] This disclosure also provides an air conditioner that includes the aforementioned compressor.

[0101] Based on the embodiments disclosed above, in the absence of explicit denial or conflict, the technical features of one embodiment may be advantageously combined with one or more other embodiments.

[0102] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. A compressor pump body, comprising: Two cylinders (2) are spaced apart along the axial direction. Each cylinder (2) is provided with an air intake hole (5) and an air exhaust hole (6). There is a first region (7) between the air intake hole (5) and the air exhaust hole (6). A partition (1) is disposed between the two cylinders (2). The partition (1) includes a first end face (3) and a second end face (4) arranged at intervals along the axial direction. A first heat insulation hole (101) is provided inside the partition (1). The first heat insulation hole (101) is located between the first end face (3) and the second end face (4), and in the axial direction, the first heat insulation hole (101) is disposed opposite to the first region (7).

2. The compressor pump body according to claim 1, wherein: The cylinder (2) is also provided with a sliding vane groove (8), which is located between the intake port (5) and the exhaust port (6). The first region (7) is the region including the sliding vane groove (8).

3. The compressor pump body according to claim 2, wherein: In the projection plane of the axial end face of the cylinder (2), the sliding groove (8) has a sliding groove central axis (9), the first heat insulation hole (101) has a first heat insulation hole central axis (10), the suction hole (5) has a suction hole central axis (11), the included angle between the first heat insulation hole central axis (10) and the sliding groove central axis (9) is a1, the included angle between the suction hole central axis (11) and the sliding groove central axis (9) is b, and a1≤b.

4. The compressor pump body according to claim 2 or 3, wherein: The partition (1) is also provided with a second heat insulation hole (102), and there is a second region (12) between the air intake hole (5) and the exhaust hole (6). The second region (12) is a region that does not include the sliding groove (8), and in the axial direction, the second heat insulation hole (102) is arranged opposite to the second region (12).

5. The compressor pump body according to claim 4, wherein: Within the projection plane of the axial end face of the cylinder (2), the second heat insulation hole (102) has a second heat insulation hole central axis (13), the first heat insulation hole (101) has a first heat insulation hole central axis (10), and the included angle between the second heat insulation hole central axis (13) and the first heat insulation hole central axis (10) is a2, and a2≤180°.

6. The compressor pump body according to any one of claims 1 to 5, wherein: A heat insulation layer (103) is also provided on the radial outer periphery of the partition (1). In the projection plane of the axial end face of the cylinder (2), the heat insulation layer (103) is arranged radially opposite to the air intake hole (5) of the cylinder (2).

7. The compressor pump body according to any one of claims 1 to 6, wherein: The cylinder (2) is also provided with a sliding vane groove (8), and the outer radial periphery of the partition (1) is also provided with a heat insulation layer (103). In the axial projection plane of the partition (1), one circumferential end of the heat insulation layer (103) is connected to the first heat insulation hole (101), and the other circumferential end of the heat insulation layer (103) extends toward the side away from the sliding vane groove (8). The circumferential extension angle of the heat insulation layer (103) is g, and g≤180°.

8. The compressor pump body according to claim 4 or 5, wherein: Along the axial direction, the maximum height of the first heat insulation hole (101) is c1, the maximum height of the second heat insulation hole (102) is c2, the axial thickness of the partition (1) is d1, and c1 < d1, c2 < d1.

9. The compressor pump body according to claim 4, 5, or 8, wherein: The first heat insulation hole (101) extends from the outer peripheral surface of the partition (1) toward the interior of the partition (1), and the maximum depth of the first heat insulation hole (101) is e1. The second heat insulation hole (102) extends from the outer peripheral surface of the partition (1) toward the interior of the partition (1), and the maximum depth of the second heat insulation hole (102) is e2. The partition (1) is an annular structure, and the radial width of the partition (1) is f, with e1 < f and e2 < f.

10. The compressor pump body according to claim 4, 5, 8, or 9, wherein: The first heat insulation hole (101) is fan-shaped or polygonal in the axial projection plane of the partition (1); the second heat insulation hole (102) is fan-shaped or polygonal in the axial projection plane of the partition (1).

11. The compressor pump body according to claim 6 or 7, wherein: The heat insulation layer (103) is a coating or sheet material with a thermal conductivity lower than that of the partition (1) and lower than that of the cylinder (2).

12. The compressor pump body according to any one of claims 1 to 11, wherein: The cylinder (2) is also provided with a sliding vane groove (8) and a third heat insulation hole (202). The third heat insulation hole (202) is located in the second region (12) between the intake hole (5) and the exhaust hole (6). The second region (12) is the region excluding the sliding vane groove (8).

13. The compressor pump body according to claim 12, wherein: The two cylinders (2) include a first cylinder (21) and a second cylinder (22). The first cylinder (21) is located at one axial end of the partition (1), and the second cylinder (22) is located at the other axial end of the partition (1). The first cylinder (21) has a third heat insulation hole (202) in a second region (12) between its intake hole (5) and exhaust hole (6). The second cylinder (22) also has a third heat insulation hole (202) in a second region (12) between its intake hole (5) and exhaust hole (6).

14. The compressor pump body according to claim 13, wherein: The partition (1) is also provided with a second heat insulation hole (102), which is respectively arranged opposite to the third heat insulation hole (202) on the first cylinder (21) and the third heat insulation hole (202) on the second cylinder (22) along the axial direction.

15. The compressor pump body according to claim 14, wherein: The second heat insulation hole (102) does not penetrate the axial end faces of the partition (1), the third heat insulation hole (202) on the first cylinder (21) does not penetrate the axial end faces of the first cylinder (21), and the third heat insulation hole (202) on the second cylinder (22) does not penetrate the axial end faces of the second cylinder (22). Alternatively, the second heat insulation hole (102) penetrates both axial end faces of the partition (1), the third heat insulation hole (202) on the first cylinder (21) penetrates both axial end faces of the first cylinder (21), and the third heat insulation hole (202) on the second cylinder (22) penetrates both axial end faces of the second cylinder (22), so that the second heat insulation hole (102), the third heat insulation hole (202) on the first cylinder (21) and the third heat insulation hole (202) on the second cylinder (22) are connected along the axial direction.

16. The compressor pump body according to claim 14 or 15, wherein: The second heat insulation hole (102), the third heat insulation hole (202) on the first cylinder (21) and the third heat insulation hole (202) on the second cylinder (22) form a heat insulation unit. There are multiple sets of heat insulation units, and the multiple sets of heat insulation units are arranged at intervals.

17. The compressor pump body according to any one of claims 1 to 16, wherein: The first heat insulation hole (101) is a hole opened from the outer peripheral surface of the partition (1) toward the radial inner side of the partition (1).

18. A compressor comprising a compressor pump body according to any one of claims 1 to 17.

19. An air conditioner comprising the compressor of claim 18.

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