Compressor and temperature regulation device having the same

Abstract

The application discloses a compressor and a temperature regulating device with the same. The compressor comprises a shell, a cylinder assembly, a liquid storage assembly and an air inlet pipeline, the cylinder assembly is arranged in the shell, the cylinder assembly comprises a cylinder provided with a compression chamber, the cylinder assembly is provided with an air inlet channel communicated with the compression chamber, the liquid storage assembly is arranged at a lower end of the shell, the liquid storage assembly comprises a liquid storage chamber and a heat insulation chamber, the heat insulation chamber is located between the liquid storage chamber and the cylinder assembly, the liquid storage chamber is connected with a suction pipe, an inlet end of the air inlet pipeline is communicated with the liquid storage chamber, and the inlet end is located at an upper portion of the liquid storage chamber, and an air outlet end of the air inlet pipeline is communicated with the air inlet channel. According to the compressor provided by the application, the liquid storage assembly is arranged at the lower end of the shell, so that the radial vibration of the compressor is reduced, the liquid storage assembly comprises the liquid storage chamber and the heat insulation chamber, and the heat insulation chamber is located between the liquid storage chamber and the cylinder assembly, so that the heat insulation chamber is used to block the conduction of heat in the shell to the liquid storage chamber, the overheating of the suction air of the compressor is avoided, and the efficiency of the compressor is improved.

Description

[0001] This application is a divisional application of application number 202210639428.5, filed on June 7, 2022, entitled "Compressor and Temperature Regulation Device Thereof". Technical Field

[0002] This invention relates to the field of temperature control equipment technology, and more specifically, to a compressor and a temperature control device having the same. Background Technology

[0003] In related technologies, the liquid receiver tank with liquid storage and gas-liquid separation functions is usually arranged around the compressor housing. The arrangement of the liquid receiver tank makes the compressor occupy a large radial space. At the same time, the liquid receiver tank is connected to the compressor housing by a cantilever, which will cause the compressor to vibrate in the rotation direction, affecting the operating stability of the compressor. In addition, the heat of the compressor housing is easily conducted to the liquid receiver tank, causing the gaseous refrigerant in the liquid receiver tank to expand due to heat, resulting in the compressor suction overheating. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, the present invention proposes a compressor that avoids overheating during compressor intake.

[0005] The present invention also proposes a temperature regulating device having the above-mentioned compressor.

[0006] A compressor according to an embodiment of the present invention includes: a housing; a cylinder assembly disposed within the housing, the cylinder assembly including a cylinder having a compression chamber, the cylinder assembly having an intake passage communicating with the compression chamber; a liquid storage assembly disposed at the lower end of the housing, the liquid storage assembly including a liquid storage chamber and a heat insulation chamber, the heat insulation chamber being located between the liquid storage chamber and the cylinder assembly, the liquid storage chamber being connected to a suction pipe; and an intake pipe, the inlet end of the intake pipe communicating with the liquid storage chamber, the intake pipe being at least partially located within the liquid storage chamber, and the inlet end being located at the upper part of the liquid storage chamber, the outlet end of the intake pipe communicating with the intake passage.

[0007] According to an embodiment of the present invention, the compressor has a liquid storage assembly located at the lower end of the housing to reduce the radial vibration of the compressor. The liquid storage assembly includes a liquid storage chamber and a heat insulation chamber, and the heat insulation chamber is located between the liquid storage chamber and the cylinder assembly to block the conduction of heat from the housing to the liquid storage chamber, thereby preventing the compressor from overheating during intake and thus improving the compressor's energy efficiency.

[0008] According to some embodiments of the present invention, the liquid storage assembly includes a housing, an inner cylinder, and a separator, at least one of the housing and the separator being fixed to the housing, the inner cylinder being disposed within the housing to define the liquid storage cavity, the separator being located between the inner cylinder and the cylinder assembly, and the separator, the housing, and the inner cylinder defining the heat insulation cavity.

[0009] Furthermore, the lower end of the housing is open and spaced apart from the outer shell. Both the outer shell and the housing are fixed to the partition. The partition and the housing cooperate to define a receiving cavity spaced apart from the heat insulation cavity.

[0010] Furthermore, the upper end of the separator is provided with a first welding groove, the lower end of the separator is provided with a second welding groove, the lower end of the housing is welded to the first welding groove, and the upper end of the outer shell is welded to the second welding groove.

[0011] Furthermore, the distance between the bottom wall of the first welding groove and the top wall of the second welding groove is d, where d ≥ 3 mm.

[0012] According to some embodiments of the present invention, the minimum outer diameter of the inner cylinder is Dn, and the inner diameter of the outer shell is Dc, satisfying Dc-Dn≥0.3mm.

[0013] According to some embodiments of the present invention, the local thickness of the sidewall of the liquid storage cavity is less than the thickness of the remaining portion to form a first thinning portion; and / or the local thickness of the sidewall of the heat insulation cavity is less than the thickness of the remaining portion to form a second thinning portion.

[0014] Furthermore, the air intake pipe is provided with an oil return hole that communicates with the liquid storage chamber.

[0015] According to some embodiments of the present invention, the effective volume of the liquid storage chamber is v, and the effective air intake volume of the cylinder is V, satisfying 12 < v / V < 72.

[0016] A temperature regulating device according to another embodiment of the present invention includes the compressor described above.

[0017] According to an embodiment of the present invention, the liquid storage assembly of the compressor is located at the lower end of the housing to reduce the radial vibration of the compressor. The liquid storage assembly includes a liquid storage chamber and a heat insulation chamber, and the heat insulation chamber is located between the liquid storage chamber and the cylinder assembly to block the conduction of heat in the housing to the liquid storage chamber, thereby preventing the compressor from overheating during intake and thus improving the compressor's energy efficiency.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the compressor according to an embodiment of the present invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the liquid storage assembly. Figure 1 ;

[0021] Figure 3 This is a schematic diagram of the liquid storage assembly. Figure 2 ;

[0022] Figure 4 This is a schematic diagram of the liquid storage assembly. Figure 3 ;

[0023] Figure 5 This is a schematic diagram of the compressor according to an embodiment of the present invention. Figure 2 ;

[0024] Figure 6 This is a schematic diagram of the compressor according to an embodiment of the present invention. Figure 3 .

[0025] Figure label:

[0026] Housing 1, receiving cavity 11, motor mounting cavity 111, oil storage cavity 112, cylinder assembly 2, liquid storage assembly 3, liquid storage cavity 31, heat insulation cavity 32, outer shell 35, outer shell body 351, sealing cover 352, first mating hole 353, third mating hole 354, inner cylinder 36, inner cylinder flange 361, second mating hole 362, fourth mating hole 363, partition 37, side plate 371, bottom plate 372, thickness reduction area 38, air intake pipe 4, first pipe 41, inlet end 411, oil return hole 412, external pipe 42, suction pipe 5, outlet end 51, compressor 10. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] The following is combined with Figures 1-6 The compressor 10 and the temperature regulating device having the compressor 10 according to an embodiment of the present invention are described in detail.

[0032] Reference Figure 1 As shown, the compressor 10 includes: a housing 1, a cylinder assembly 2, a liquid receiver 3, and an intake pipe 4, wherein:

[0033] Cylinder assembly 2 is located inside housing 1. Cylinder assembly 2 includes a cylinder with a compression chamber and an air intake channel communicating with the compression chamber. Liquid storage assembly 3 is located at the lower end of housing 1. Liquid storage assembly 3 includes a liquid storage chamber 31 and a heat insulation chamber 32. The heat insulation chamber 32 is located between the liquid storage chamber 31 and cylinder assembly 2. The liquid storage chamber 31 is connected to a suction pipe 5. The inlet end 411 of the air intake pipe 4 communicates with the liquid storage chamber 31. The air intake pipe 4 is at least partially located inside the liquid storage chamber 31, and the inlet end 411 is located at the upper part of the liquid storage chamber 31. The outlet end is connected to the inlet channel, meaning that when the compressor 10 is working, external refrigerant can enter the liquid storage chamber 31 through the suction pipe 5 and undergo gas-liquid separation in the liquid storage chamber 31. The denser liquid refrigerant settles at the bottom of the liquid storage chamber 31, while the less dense gaseous refrigerant flows to the inlet channel through the inlet pipe 4, so that the gaseous refrigerant after gas-liquid separation enters the compression chamber. After being compressed in the compression chamber, the gaseous refrigerant can be discharged through the exhaust channel of the compressor 10. The compressor 10 can provide power for the circulation of refrigerant.

[0034] It should be noted that the liquid storage assembly 3 located at the lower end of the housing 1 can reduce the mass distribution far from the outside of the housing 1, making the overall center of gravity of the compressor 10 closer to the central axis of the housing 1. Therefore, during the operation of the compressor 10, it can effectively reduce the radial vibration of the compressor 10 and improve the stability and reliability of the compressor 10. Preferably, the center of gravity of the liquid storage assembly 3 and the center of gravity of the housing 1 are located on the same straight line.

[0035] Meanwhile, the heat insulation cavity 32 is located between the liquid storage cavity 31 and the cylinder assembly 2. The heat insulation cavity 32 can effectively block the transfer of heat from the housing 1 to the liquid storage cavity 31, thereby reducing the temperature of the liquid storage cavity 31, reducing the thermal expansion of the gaseous refrigerant in the liquid storage cavity 31, and preventing the compressor 10 from overheating during intake. As a result, when the gaseous refrigerant in the liquid storage cavity 31 flows to the intake channel, the volume of the gaseous refrigerant is reduced, which is beneficial to improving the intake efficiency of the compressor 10.

[0036] In addition, the liquid storage assembly 3 located at the lower end of the housing 1 can reduce the space occupied by the compressor 10 in the radial (width) direction. Thus, when the compressor 10 is used in temperature regulating equipment such as air conditioners and heat pumps, the compressor 10 can make full use of the space in the height direction and reduce the space occupied by the compressor 10 in the width direction, which is conducive to the miniaturization of temperature regulating equipment such as air conditioners and heat pumps.

[0037] According to an embodiment of the present invention, the compressor 10 has a liquid storage assembly 3 disposed at the lower end of the housing 1 to reduce the radial vibration of the compressor 10. The liquid storage assembly 3 includes a liquid storage chamber 31 and a heat insulation chamber 32, and the heat insulation chamber 32 is located between the liquid storage chamber 31 and the cylinder assembly 2, so as to block the conduction of heat in the housing 1 to the liquid storage chamber 31, avoid the compressor 10 from overheating during intake, and thus help improve the energy efficiency of the compressor 10.

[0038] In some embodiments of the present invention, the height of the inlet end 411 of the intake pipe 4 is more than 10 mm greater than the height of the outlet end 51 of the suction pipe 5, so as to prevent the refrigerant that is not completely separated from the gas and liquid from flowing out of the outlet end 51 of the suction pipe 5 into the inlet end 411 of the intake pipe 4, and to prevent the compressor 10 from liquid slugging.

[0039] In some embodiments of the present invention, reference is made to... Figure 1As shown, the liquid storage assembly 3 includes a housing 35, an inner cylinder 36, and a separator 37. At least one of the housing 35 and the separator 37 is fixed to the housing 1. That is, the housing 35 and the separator 37 can be fixed to the housing 1 simultaneously, or the housing 35 can be fixed to the housing 1 and the separator 37 can be fixed to the housing 35, or the separator 37 can be fixed to the housing 1 and the housing 35 can be fixed to the separator 37. The inner cylinder 36 is disposed inside the housing 35 to define a liquid storage chamber 31. The separator 37 is located between the inner cylinder 36 and the cylinder assembly 2. The separator 37, the housing 35, and the inner cylinder 36 define a heat insulation chamber 32. The heat insulation chamber 32 can effectively block the transfer of heat from the housing 1 to the liquid storage chamber 31, thereby reducing the temperature of the liquid storage chamber 31 and improving the suction efficiency of the compressor 10.

[0040] In some embodiments of the present invention, reference is made to... Figure 1 As shown, the lower end of the housing 1 is open and spaced apart from the outer shell 35. Both the outer shell 35 and the housing 1 are fixed to the partition 37. The partition 37 and the housing 1 cooperate to define the receiving cavity 11, which is spaced apart from the heat insulation cavity 32. The heat generated by the compressor 10 during operation is mainly concentrated in the receiving cavity 11. The heat transfer from the receiving cavity 11 to the liquid storage cavity 31 can be reduced by the barrier of the heat insulation cavity 32. It is understood that the cylinder assembly 2 is located in the receiving cavity 11. The cylinder assembly 2 can also divide the receiving cavity 11 into a motor mounting cavity 111 and an oil storage cavity 112. The motor mounting cavity 111 is located above the oil storage cavity 112. The motor can be located in the motor mounting cavity 111 to drive the crankshaft of the cylinder assembly 2 to rotate. The oil storage cavity 112 can store lubricating oil for lubricating the cylinder assembly 2. When the compressor 10 is running, the cylinder assembly 2 and the motor will generate heat, which will cause the lubricating oil in the oil storage cavity 112 to heat up. The heat insulation cavity 32 can separate the oil storage cavity 112 and the liquid storage cavity 31 to effectively prevent the heat in the oil storage cavity 112 from being transferred to the liquid storage cavity 31.

[0041] In some embodiments of the present invention, reference is made to Figure 1 and Figure 2 As shown, the upper end of the separator 37 is provided with a first welding groove, and the lower end of the separator 37 is provided with a second welding groove. The lower end of the housing 1 is welded to the first welding groove, which can provide positioning for the housing 1. The upper end of the outer shell 35 is welded to the second welding groove, which can provide positioning for the outer shell 35, so as to facilitate the positioning of the housing 1, separator 37, and outer shell 35 during welding and improve the welding accuracy of the housing 1, separator 37, and outer shell 35.

[0042] Reference Figure 2As shown, the separator 37 is a cylindrical structure with one end open. The separator 37 includes a side plate 371 and a bottom plate 372. A first welding groove is provided on the outer side wall of the upper end of the side plate 371, and a second welding groove is provided on the outer side wall of the lower end of the side plate 371. The bottom plate 372 is connected to the inner side wall of the lower end of the side plate 371. At least a part of the bottom plate 372 is a downwardly recessed arc-shaped structure to improve the compressive strength of the bottom plate 372.

[0043] In some embodiments of the present invention, reference is made to... Figure 1 As shown, the distance between the bottom wall of the first welding groove and the top wall of the second welding groove is d, where d ≥ 3mm. This facilitates the welding operations between the housing 1 and the partition 37, as well as the welding operations between the outer shell 35 and the partition 37, ensuring welding quality and reducing the influence between the welding operations of the housing 1 and the partition 37, and the welding operations of the outer shell 35 and the partition 37. In other words, the housing 1 and the partition 37 can be welded separately, and the outer shell 35 and the partition 37 can also be welded separately, with the two welding operations not affecting each other. Preferably, d ≥ 6mm to facilitate the two welding operations and ensure welding quality. It is understandable that if d is less than 3mm, due to the limited operating space and weld width, the housing 1, the partition 37, and the outer shell 35 can only be fixed by one welding operation, making it difficult to guarantee welding quality, which is detrimental to the production and manufacturing of the compressor 10 and the yield rate.

[0044] In other embodiments of the present invention, reference is made to Figure 5 As shown, the separator 37 includes a flange, the upper end face of which is provided with a first welding groove, and the lower end face of which is provided with a second welding groove. The bottom end of the housing 1 can be inserted into the first welding groove, and the top end of the outer shell 35 can be inserted into the second welding groove, so as to facilitate the positioning of the housing 1, the separator 37, and the outer shell 35 during welding and improve the welding accuracy of the housing 1, the separator 37, and the outer shell 35.

[0045] In some other embodiments of the present invention (not shown in the figures), the separator 37 includes a first flange, a second flange, and a heat insulation gasket. The upper end face of the first flange is provided with a first welding groove, and the lower end face of the second flange is provided with a second welding groove. The bottom end of the housing 1 can be inserted into the first welding groove, and the top end of the housing 35 can be inserted into the second welding groove. The heat insulation gasket is disposed between the first flange and the second flange to improve the heat insulation effect of the separator 37 and further reduce the heat transfer from the receiving cavity 11 to the liquid storage cavity 31. The first flange, the second flange, and the heat insulation gasket can be connected by fasteners, which can be screws.

[0046] In other embodiments of the present invention, reference is made to Figure 6As shown, the housing 1 and the outer shell 35 are an integral structure. The partition 37 is located in the space enclosed by the housing 1 and the outer shell 35, which helps to simplify the structure of the compressor 10 and reduce the number of parts of the compressor 10. The partition 37 cooperates with the housing 1 and the outer shell 35 to define the receiving cavity 11 that is spaced apart from the heat insulation cavity 32.

[0047] In some embodiments of the present invention, reference is made to... Figure 2 As shown, the minimum outer diameter of the inner cylinder 36 is Dn, and the inner diameter of the outer shell 35 is Dc, satisfying Dc-Dn≥0.3mm. That is to say, there is a certain gap between the inner cylinder 36 and the outer shell 35, so as to reduce the heat transfer from the outer shell 35 to the inner cylinder 36 when the shell 1 transfers heat to the outer shell 35, thereby helping to reduce the temperature of the liquid storage chamber 31 and improve the suction efficiency of the compressor 10.

[0048] In some embodiments of the present invention, reference is made to... Figure 1 As shown, the outer diameter of the outer shell 35 is Df, and the outer diameter of the housing 1 is Dk, satisfying Df ≥ 0.5 * Dk to ensure the stability of the compressor 10's operation. Preferably, Df ≥ 1.05 * Dk. The wall thickness of the inner cylinder 36 is T, satisfying 0.1mm ≤ T ≤ 2.8mm to ensure the structural strength of the inner cylinder 36. Preferably, T = 1mm. The wall thickness of the outer shell 35 is less than or equal to 2.8mm to ensure the structural strength of the outer shell 35. The wall thickness of the housing 1 is greater than or equal to 2.5mm to ensure the structural strength of the housing 1.

[0049] In some embodiments of the present invention, reference is made to... Figure 2 As shown, the outer shell 35 includes an outer shell body 351 and a sealing cover 352. The outer shell body 351 is a cylindrical structure with openings at both ends. The inner cylinder 36 can be an integral structure or a separate structure. The material of the inner cylinder 36 can be the same as that of the outer shell 35. The lower end of the inner cylinder 36 is open, and the lower end of the inner cylinder 36 is provided with an inner cylinder flange 361. The inner cylinder flange 361 is adapted to cooperate with the lower end of the outer shell body 351 to achieve positioning of the inner cylinder 36. The sealing cover 352 covers the lower opening of the inner cylinder 36. The sealing cover 352, the inner cylinder flange 361, and the lower end of the outer shell body 351 can be sealed and connected by means of bonding, welding, etc. Optionally, the thickness of the inner cylinder flange 361 is 0.5mm to 3mm.

[0050] In some other embodiments of the present invention, the outer shell 35 includes an outer shell body 351 and a sealing cover 352. The outer shell body 351 is a cylindrical structure with openings at both ends. The lower end of the inner cylinder 36 is open, and the lower end of the inner cylinder 36 is provided with an inner cylinder flange 361. The inner cylinder flange 361 is adapted to be interference-fitted with the inner wall of the outer shell body 351 to achieve positioning of the inner cylinder 36. The sealing cover 352 covers the lower opening of the inner cylinder 36. The sealing cover 352 and the lower end of the outer shell body 351 can be sealed and connected by means of bonding, welding or other methods.

[0051] In some embodiments of the present invention, reference is made to... Figure 1 and Figure 3 As shown, the outer shell 35 is provided with a first mating hole 353 and a third mating hole 354. The suction pipe 5 passes through the first mating hole 353, and the suction pipe 5 is interference-fitted with the first mating hole 353 and then furnace-welded. The air intake pipe 4 passes through the third mating hole 354, and the air intake pipe 4 is interference-fitted with the third mating hole 354 and then furnace-welded. That is to say, during assembly, the suction pipe 5 is inserted into the first mating hole 353, and the weld ring on the suction pipe 5 is made to fit against the outer wall of the outer shell 35. The air intake pipe 4 is inserted into the third mating hole 354, and the weld ring on the air intake pipe 4 is made to fit against the outer wall of the outer shell 35. Then, the weld ring is melted by furnace welding. The furnace welding process is relatively simple, has high production efficiency, does not damage the appearance of the outer shell 35, has stable welding quality, and has a good sealing effect at the connection. Optionally, the interference fit between the suction pipe 5 and the first mating hole 353 can be 0.03mm-0.05mm, and the interference fit between the third mating hole 354 of the intake pipe 4 can be 0.03mm-0.05mm.

[0052] In some other embodiments of the present invention, the outer shell 35 is provided with a first mating hole 353 and a third mating hole 354. The suction pipe 5 passes through the first mating hole 353, and the suction pipe 5 is clearance-fitted with the first mating hole 353 and connected by manual brazing. The air intake pipe 4 passes through the third mating hole 354, and the air intake pipe 4 is clearance-fitted with the third mating hole 354 and connected by manual brazing. Manual brazing has low manufacturing cost and can be used to repair leaks when the connection is not properly sealed.

[0053] In some embodiments of the present invention, reference is made to... Figure 3 As shown, a first mating hole 353 is provided on the side wall of the outer shell 35, and a second mating hole 362 corresponding to the first mating hole 353 is provided on the side wall of the inner cylinder 36. The suction pipe 5 can be inserted through the first mating hole 353 and the second mating hole 362 so that external refrigerant can enter the liquid storage chamber 31 through the suction pipe 5. A third mating hole 354 is also provided on the side wall of the outer shell 35, and a fourth mating hole 363 corresponding to the third mating hole 354 is also provided on the side wall of the inner cylinder 36. The air intake pipe 4 can be inserted through the third mating hole 354 and the fourth mating hole 363 so that the gaseous refrigerant in the liquid storage chamber 31 can flow into the compression chamber through the air intake pipe 4.

[0054] In some embodiments of the present invention, the heat insulation cavity 32 is a sealed cavity, that is, the heat insulation cavity 32 is not in communication with the liquid storage cavity 31. The sealed heat insulation cavity 32 can be filled with a poor conductor of heat, such as air, to reduce the manufacturing cost of the compressor 10 while achieving heat insulation. The sealed heat insulation cavity 32 can also be evacuated to reduce heat conduction in the heat insulation cavity 32.

[0055] In other embodiments of the present invention, to reduce assembly difficulty and manufacturing costs, the refrigerant flow rate at the connection point between the suction pipe 5 and the air intake pipe 4, which passes through the inner cylinder 36, is allowed to be 1.0 × 10⁻⁶. -2 cm3 / s, that is, the heat insulation cavity 32 and the liquid storage cavity 31 are connected at the second mating hole 362 and the fourth mating hole 363, and the refrigerant flow rate is small. The gaseous refrigerant in the liquid storage cavity 31 can enter the heat insulation cavity 32, and the gaseous refrigerant can also play a certain heat insulation effect. At the same time, since the refrigerant flow rate at the connection is small, the amount of refrigerant that expands due to heat in the heat insulation cavity 32 flowing into the liquid storage cavity 31 is also small, which avoids the compressor 10 from overheating and improves the energy efficiency of the compressor 10.

[0056] In some embodiments of the present invention, reference is made to... Figure 4 As shown, the local thickness of the sidewall of the liquid storage cavity 31 is less than the thickness of the rest to form a first thinning portion, and / or the local thickness of the sidewall of the heat insulation cavity 32 is less than the thickness of the rest to form a second thinning portion. That is, at least one of the sidewalls of the liquid storage cavity 31 and the heat insulation cavity 32 is provided with a thickness reduction region 38 to reduce the heat transfer rate from the shell 1 to the liquid storage cavity 31 and reduce the temperature of the liquid storage cavity 31.

[0057] It should be noted that the first thinning portion reduces the unit area of ​​the sidewall of the liquid storage cavity 31 perpendicular to the heat transfer direction, thereby reducing the heat transfer rate from the shell 1 to the liquid storage cavity 31 through the sidewall, and thus lowering the temperature of the liquid storage cavity 31. Similarly, the second thinning portion reduces the unit area of ​​the sidewall of the insulation cavity 32 perpendicular to the heat transfer direction, thereby reducing the heat transfer rate from the shell 1 to the liquid storage cavity 31 through the sidewall of the insulation cavity 32, and thus lowering the temperature of the liquid storage cavity 31.

[0058] In some embodiments of the present invention, the first thinning part is constructed as an annular groove provided on the side wall of the liquid storage cavity 31 to achieve the thinning of the side wall of the liquid storage cavity 31, and the second thinning part is constructed as an annular groove provided on the side wall of the heat insulation cavity 32 to achieve the thinning of the side wall of the heat insulation cavity 32.

[0059] In some embodiments of the present invention, the thickness of the sidewall of the liquid storage cavity 31 at the first thinning portion is less than 0.9 times the thickness at the non-first thinning portion, and the thickness of the sidewall of the heat insulation cavity 32 at the second thinning portion is less than 0.9 times the thickness at the non-second thinning portion.

[0060] In some embodiments of the present invention, at least a portion of the sidewalls of the liquid storage cavity 31 have a thermal conductivity of less than 20 W / (m·K), and / or at least a portion of the inner wall and / or at least a portion of the outer wall of the liquid storage cavity 31 are provided with a heat insulation layer to further reduce the transfer of external heat to the liquid storage cavity 31. Optionally, the sidewalls of the liquid storage cavity 31 may be made of stainless steel, and the heat insulation layer may be made of a material with low thermal conductivity, stable chemical properties, and that does not react with lubricating oil. For example, the heat insulation layer may be made of PTFE (polytetrafluoroethylene), PC (polycarbonate), etc.

[0061] In some embodiments of the present invention, reference is made to... Figure 1 As shown, the intake pipe 4 includes a first pipe 41 and an external pipe 42. The first pipe 41 is at least partially located inside the liquid storage chamber 31, and the inlet end 411 of the first pipe 41 is located at the upper part of the liquid storage chamber 31, so that the gaseous refrigerant after gas-liquid separation can enter the first pipe 41 through the inlet end 411 of the first pipe 41. The external pipe 42 is connected to the first pipe 41 and the intake channel respectively, so that the gaseous refrigerant entering the first pipe 41 from the liquid storage chamber 31 can enter the compression chamber through the external pipe 42 and the intake channel. The external pipe 42 is located outside the liquid storage component 3 and the housing 1, so that the external pipe 42 bypasses the heat insulation chamber 32 and the oil storage chamber 112, which can reduce the heat transfer from the housing 1 to the external pipe 42, thereby reducing the thermal expansion of the gaseous refrigerant in the external pipe 42, and thus helping to ensure the intake volume of the compression chamber and improve the energy efficiency of the compressor 10.

[0062] In some embodiments of the present invention, reference is made to... Figure 1 and Figure 6 As shown, the first pipe 41 is an "L"-shaped pipe, and the inlet end 411 of the first pipe 41 opens upward to prevent liquid refrigerant from entering the inlet end 411 of the first pipe 41. In other embodiments of the present invention (not shown in the figure), the first pipe 41 is a "I"-shaped pipe.

[0063] In some embodiments of the present invention, the intake pipe 4 is provided with an oil return hole 412 communicating with the liquid storage chamber 31. Specifically, refer to... Figure 1 and Figure 6 As shown, the first pipeline 41 is provided with an oil return hole 412 that communicates with the liquid storage chamber 31. When the gaseous refrigerant flows from the intake pipeline 4 to the intake channel, a negative pressure is formed at the oil return hole 412, so that the lubricating oil in the lower space of the liquid storage chamber 31 can flow into the first pipeline 41 through the oil return hole 412 and flow upward into the intake channel through the external pipeline 42, thereby realizing the return of lubricating oil, so as to avoid wear caused by lack of lubricating oil in the compressor 10 and improve the reliability and service life of the compressor 10.

[0064] Understandably, cylinder assembly 2 needs sufficient lubricating oil to reduce wear. When compressor 10 is working, some lubricating oil will flow out of compressor 10 along with the refrigerant. During the refrigerant circulation process, the refrigerant carries the lubricating oil into the liquid storage chamber 31 for gas-liquid separation. The liquid lubricating oil can be deposited at the bottom of the liquid storage chamber 31 along with the liquid refrigerant. To avoid the cylinder assembly 2 lacking lubricating oil due to excessive lubricating oil in the liquid storage chamber 31, the lubricating oil in the liquid storage chamber 31 is drawn into the compression chamber of cylinder assembly 2 by the negative pressure formed by the flow of gaseous refrigerant through the oil return hole 412, thereby ensuring the oil return effect of the lubricating oil and avoiding poor lubrication of compressor 10.

[0065] Specifically, the liquid lubricating oil in the reservoir 31 can enter the first pipeline 41 through the oil return hole 412, and then sequentially enter the compression chamber through the external pipeline 42 and the air intake channel. It can be understood that the density of the liquid lubricating oil is less than that of the liquid refrigerant. In the reservoir 31, the liquid lubricating oil is located at the uppermost layer of the liquid surface. By setting the height of the oil return hole 412 at the lower end of the oil return pipe, the amount of liquid refrigerant entering the air intake channel through the oil return hole 412 can be reduced, thus improving the oil return efficiency. Optionally, the height of the oil return hole 412 from the bottom of the reservoir 31 is 2mm to 10mm, and the aperture of the opening of the oil return hole 412 is less than 3mm.

[0066] In some embodiments of the present invention, the effective volume of the liquid storage chamber 31 is v, and the effective suction volume of the cylinder is V, satisfying 12 < v / V < 72, for example, v / V is 48, to ensure that the effective volume of the liquid storage chamber 31 meets the usage requirements of the compressor 10 and ensures the economy of the compressor 10. It should be noted that when v / V ≤ 12, the liquid refrigerant level in the liquid storage chamber 31 is too high, and the liquid storage chamber 31 is easily filled with liquid refrigerant, resulting in the failure of the gas-liquid separation function. When v / V ≥ 72, the space of the liquid storage chamber 31 is too large, and the manufacturing cost of the compressor 10 is high.

[0067] It should be noted that the compressor 10 in this embodiment of the invention can be a rotary (rotor) compressor 10 to reduce the radial vibration of the rotary compressor 10.

[0068] According to another embodiment of the present invention, a temperature regulating device includes the compressor 10 described in the above embodiment. It should be noted that the temperature regulating device can be an air conditioner, a heat pump, etc.

[0069] According to an embodiment of the present invention, the liquid storage assembly 3 of the compressor 10 is disposed at the lower end of the housing 1 to reduce the radial vibration of the compressor 10. The liquid storage assembly 3 includes a liquid storage chamber 31 and a heat insulation chamber 32, and the heat insulation chamber 32 is located between the liquid storage chamber 31 and the cylinder assembly 2, so as to block the conduction of heat in the housing 1 to the liquid storage chamber 31, avoid the compressor 10 from overheating during air intake, thereby improving the energy efficiency of the compressor 10.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0071] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A compressor, characterized in that, include: case; A cylinder assembly, the cylinder assembly being disposed within the housing, the cylinder assembly including a cylinder having a compression chamber, and the cylinder assembly having an air intake passage communicating with the compression chamber; A liquid storage assembly is located at the lower end of the housing. The liquid storage assembly includes a liquid storage chamber and a heat insulation chamber. The heat insulation chamber is located between the liquid storage chamber and the cylinder assembly. The liquid storage chamber is connected to a suction pipe. An air intake pipe, wherein the inlet end of the air intake pipe is connected to the liquid storage chamber, the air intake pipe is at least partially located inside the liquid storage chamber, and the inlet end is located at the upper part of the liquid storage chamber, and the air outlet end of the air intake pipe is connected to the air intake channel; The liquid storage assembly includes an outer shell, an inner cylinder, and a separator. There is a gap between the outer shell and the inner cylinder. The outer shell includes an outer shell body and a sealing cap. The outer shell body is a cylindrical structure with openings at both ends. The lower end of the inner cylinder is open, and the lower end of the inner cylinder is provided with an inner cylinder flange. The inner cylinder flange is interference-fitted with the inner wall of the outer shell body to achieve the positioning of the inner cylinder. The outer shell has a first mating hole and a third mating hole on its side wall, and the inner cylinder has a second mating hole corresponding to the first mating hole and a fourth mating hole corresponding to the third mating hole on its side wall. The suction pipe passes through the first mating hole and the second mating hole, and the air inlet pipe passes through the third mating hole and the fourth mating hole. The suction pipe and the second mating hole are in clearance fit, and the air inlet pipe and the fourth mating hole are in clearance fit. The gaseous refrigerant in the liquid storage chamber enters the heat insulation cavity through the second mating hole and the fourth mating hole.

2. The compressor according to claim 1, characterized in that, At least one of the outer shell and the partition is fixed to the outer shell, the inner cylinder is disposed within the outer shell to define the liquid storage cavity, the partition is located between the inner cylinder and the cylinder assembly, and the partition, the outer shell and the inner cylinder define the heat insulation cavity.

3. The compressor according to claim 2, characterized in that, The lower end of the housing is open and spaced apart from the outer shell. Both the outer shell and the housing are fixed to the partition. The partition and the housing cooperate to define a receiving cavity spaced apart from the heat insulation cavity.

4. The compressor according to claim 3, characterized in that, The upper end of the separator is provided with a first welding groove, the lower end of the separator is provided with a second welding groove, the lower end of the housing is welded to the first welding groove, and the upper end of the outer shell is welded to the second welding groove.

5. The compressor according to claim 4, characterized in that, The distance between the bottom wall of the first welding groove and the top wall of the second welding groove is d, where d ≥ 3 mm.

6. The compressor according to claim 2, characterized in that, The minimum outer diameter of the inner cylinder is Dn, and the inner diameter of the outer shell is Dc, satisfying Dc-Dn≥0.3mm.

7. The compressor according to claim 1, characterized in that, The thickness of a portion of the sidewall of the reservoir is less than the thickness of the remaining portion to form a first thinning section; and / or The thickness of the sidewall of the insulation cavity is locally less than the thickness of the rest to form a second thinning section.

8. The compressor according to claim 1, characterized in that, The air intake pipe is provided with an oil return hole that communicates with the liquid storage chamber.

9. The compressor according to claim 1, characterized in that, The effective volume of the liquid storage chamber is v, and the effective air intake volume of the cylinder is V, satisfying 12 < v / V < 72.

10. A temperature regulating device, characterized in that, The compressor includes any one of claims 1-9.

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