Compressor and heating and ventilation equipment

Abstract

The utility model relates to a compressor and heating and ventilation equipment, the compressor comprises a shell and a motor, the inner circumferential wall of the shell is concaved outwards in the radial direction to form a plurality of refrigerant channels, the refrigerant channels are distributed at intervals in the circumferential direction, and the length direction of each refrigerant channel is parallel to the axial direction of the shell; a fixing part used for abutting against and fixing the motor is formed between every two adjacent refrigerant channels. The motor divides the interior of the shell into an upper cavity and a lower cavity, and the upper end and the lower end of the refrigerant channel communicate with the upper cavity and the lower cavity correspondingly. The axial distance between the bottom of the refrigerant channel and the bottom of the shell is L1, the axial distance between the bottom of the motor and the bottom of the shell is L2, and L1 is larger than 0 and smaller than L2; the axial distance between the top of the refrigerant channel and the bottom of the shell is L3, the axial distance between the top of the motor and the bottom of the shell is L4, and L4 is smaller than L3. According to the utility model, the completeness of the outer diameter whole circle of the motor stator can be improved, thereby reducing the deformation of the motor stator and improving the motor performance.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a compressor and heating and ventilation equipment. Background Technology

[0002] A compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas; it is the heart of a refrigeration system. It draws in low-temperature, low-pressure refrigerant gas through the suction pipe, compresses the gas using a piston driven by a motor, and then discharges high-temperature, high-pressure refrigerant gas through the discharge pipe, providing power for the refrigeration cycle.

[0003] As market demands for compressor energy efficiency increase, improving motor efficiency is also crucial. Common compressor motors, considering the refrigerant path, typically have refrigerant channels distributed around the motor's outer diameter. Therefore, the circular outer diameter of the motor stator needs to be machined into a multi-sided or irregularly shaped non-circular outer diameter to form an axial flow channel for refrigerant passage between the stator and the compressor housing. While this structure provides a certain cross-sectional area for the refrigerant channel, it compromises the integrity of the iron core. Consequently, when the motor stator and compressor housing are thermally fitted together, the stator is prone to elliptical deformation, leading to uneven air gap lengths between the stator and rotor. This results in decreased motor performance and increased noise during operation. Utility Model Content

[0004] Therefore, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a compressor and HVAC equipment. According to this utility model, by forming several refrigerant channels for refrigerant flow in the inner peripheral wall of the compressor housing, the integrity of the circular shape of the motor stator outer diameter can be improved, thereby reducing the deformation of the motor stator and improving motor performance.

[0005] To achieve the above objectives, the first aspect of this utility model provides a compressor, including a housing and a motor. The housing is a cylindrical structure with an exhaust port at its upper end. The inner circumferential wall of the housing is radially recessed to form a plurality of refrigerant channels. The plurality of refrigerant channels are spaced apart along the circumferential direction, and the length direction of each refrigerant channel is parallel to the axial direction of the housing. A fixing part for abutting and fixing the motor is formed between two adjacent refrigerant channels. The motor divides the interior of the housing into an upper chamber and a lower chamber. The upper and lower ends of the refrigerant channels are respectively connected to the upper chamber and the lower chamber. The axial distance between the bottom of the refrigerant channel and the bottom of the housing is L1, and the axial distance between the bottom of the motor and the bottom of the housing is L2, where 0 < L1 < L2. The axial distance between the top of the refrigerant channel and the bottom of the housing is L3, and the axial distance between the top of the motor and the bottom of the housing is L4, where L4 < L3.

[0006] Therefore, according to the compressor of this utility model, by recessing a plurality of refrigerant channels in the inner circumferential wall of the compressor housing, the plurality of refrigerant channels are arranged at intervals along the circumferential direction, and the length direction of each refrigerant channel is parallel to the axial direction of the housing. In this way, the housing forms a fixing part for fixing the motor in the area between two adjacent refrigerant channels. By making the axial length of the refrigerant channel longer than the axial length of the motor, and limiting the top and bottom of the motor to not exceed the top and bottom of the refrigerant channel, the top and bottom of the refrigerant channel are not blocked by the motor, ensuring that the refrigerant can flow axially along the refrigerant channel, and increasing the outer diameter of the motor stator to a more rounded shape, thereby reducing the deformation caused by the thermal fitting of the motor stator and the fixing part of the housing, effectively improving the efficiency of the motor and reducing the generation of noise. In addition, as the refrigerant flows upward through the refrigerant channel, some of the refrigerant will collide with the top of the refrigerant channel, and under the action of gravity, the refrigerant oil entrained in the refrigerant can settle downward along the inner wall of the refrigerant channel, thereby improving the settling effect of the refrigerant oil.

[0007] In one embodiment, the axial distance between the bottom of the motor and the bottom of the refrigerant channel is H1, and the axial distance between the top of the motor and the top of the refrigerant channel is H2, where 0 < H1 < H2.

[0008] In one implementation, several of the refrigerant channels are distributed at equal intervals along the circumferential direction.

[0009] In one implementation, the refrigerant channel has a rectangular projection shape in the radial direction.

[0010] As one implementation, the cross-sectional shape of some of the refrigerant channels in the radial direction is one or more of the following combinations: arc, trapezoid, triangle, and polygon.

[0011] In one implementation, the axial distance H1 between the bottom of the motor and the bottom of the refrigerant channel and the axial distance H2 between the top of the motor and the top of the refrigerant channel satisfy the relationship: 2H1=H2.

[0012] In one embodiment, a pump body is also included, which is disposed on the inner peripheral wall of the housing and located below the motor; the top of the pump body is spaced apart from the bottom of the refrigerant channel, and the motor is drivenly connected to the pump body.

[0013] In one embodiment, the top of the housing is provided with a top cover, and the top cover has the exhaust port.

[0014] A second aspect of this utility model provides a heating, ventilation, and air conditioning (HVAC) device, which includes the compressor described in any one of the preceding claims. According to this utility model, by forming a plurality of refrigerant channels for refrigerant flow in the inner peripheral wall of the compressor housing, the integrity of the circular shape of the motor stator's outer diameter can be improved, thereby reducing the deformation of the motor stator and improving motor performance.

[0015] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the compressor structure according to an embodiment of the present utility model;

[0017] Figure 2 This is a cross-sectional schematic diagram of the compressor according to an embodiment of the present utility model;

[0018] Figure 3 This is one of the structural schematic diagrams of the shell according to an embodiment of the present utility model;

[0019] Figure 4 This is a second schematic diagram of the shell structure according to an embodiment of the present utility model;

[0020] Figure 5 for Figure 4 A schematic cross-sectional view along direction AA is shown.

[0021] Figure 6 This is the third schematic diagram of the structure of the shell according to an embodiment of the present utility model;

[0022] Figure 7 for Figure 6 The diagram shows a cross-sectional view along the BB direction.

[0023] Explanation of reference numerals in the attached drawings: 10, housing; 20, refrigerant passage; 21, fixing part; 30, motor. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0026] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] In related technologies, as market demands for compressor energy efficiency increase, improving motor efficiency is also crucial. Common compressor motors, considering the refrigerant path, typically have refrigerant channels distributed around the motor's outer diameter. Therefore, the circular outer diameter of the motor stator needs to be machined into a multi-sided or irregularly shaped non-circular outer diameter to form an axial flow channel for refrigerant passage between the stator and the compressor housing. While this structure provides a certain cross-section for the refrigerant channel, it compromises the integrity of the iron core. Consequently, when the motor stator and compressor housing are thermally fitted together, the stator is prone to elliptical deformation, leading to uneven air gap lengths between the stator and rotor. This results in decreased motor performance and increased noise during operation.

[0028] In view of this, the present invention provides a compressor and a heating and ventilation system. According to the compressor and heating and ventilation system of the present invention, by forming a plurality of refrigerant channels 20 for refrigerant flow in the inner peripheral wall of the compressor housing 10, the integrity of the circular outer diameter of the stator of the motor 30 can be improved, thereby reducing the deformation of the stator of the motor 30 and improving the performance of the motor 30.

[0029] Please see Figures 1 to 7The first aspect of this utility model provides a compressor, including a housing 10 and a motor 30. The housing 10 is a cylindrical structure with an exhaust port at the upper end. The inner circumferential wall of the housing 10 is radially recessed to form a plurality of refrigerant channels 20. The plurality of refrigerant channels 20 are spaced apart along the circumferential direction, and the length direction of each refrigerant channel 20 is parallel to the axial direction of the housing 10. A fixing part 21 for abutting and fixing the motor 30 is formed between two adjacent refrigerant channels 20. The motor 30 divides the interior of the housing 10 into an upper chamber and a lower chamber. The upper and lower ends of the refrigerant channels 20 are respectively connected to the upper chamber and the lower chamber. The axial distance between the bottom of the refrigerant channel 20 and the bottom of the housing 10 is L1, and the axial distance between the bottom of the motor 30 and the bottom of the housing 10 is L2, where 0 < L1 < L2. The axial distance between the top of the refrigerant channel 20 and the bottom of the housing 10 is L3, and the axial distance between the top of the motor 30 and the bottom of the housing 10 is L4, where L4 < L3.

[0030] Furthermore, in this embodiment of the present invention, the axial distance between the bottom of the motor 30 and the bottom of the refrigerant channel 20 is H1, and the axial distance between the top of the motor 30 and the top of the refrigerant channel 20 is H2, where 0 < H1 < H2.

[0031] Therefore, in the compressor according to this embodiment of the present invention, a plurality of refrigerant channels 20 are formed by recessing the inner peripheral wall of the compressor housing 10. The plurality of refrigerant channels 20 are arranged at intervals along the circumferential direction, and the length direction of each refrigerant channel 20 is parallel to the axial direction of the housing 10. In this way, a fixing part 21 for fixing the motor 30 is formed in the area between two adjacent refrigerant channels 20. By making the axial length of the refrigerant channel 20 longer than the axial length of the motor 30, and by limiting that the top and bottom of the motor 30 do not exceed the top and bottom of the refrigerant channel 20, the refrigerant channels are thus secured. The top and bottom of the refrigerant channel 20 are not obstructed by the motor 30, ensuring that the refrigerant can flow axially along the refrigerant channel 20. This also increases the outer diameter of the stator of the motor 30, thereby reducing the deformation that occurs when the stator of the motor 30 is thermally fitted with the fixing part 21 of the housing 10, effectively improving the efficiency of the motor 30 and reducing noise. In addition, as the refrigerant flows upward through the refrigerant channel 20, some of the refrigerant will impact the top of the refrigerant channel 20, and under the action of gravity, the refrigeration oil entrained in the refrigerant can settle downward along the inner wall of the refrigerant channel 20, thereby improving the settling effect of the refrigeration oil.

[0032] In this embodiment of the invention, a pump body is also provided inside the compressor housing 10. The pump body is disposed on the inner peripheral wall of the housing 10 and is located below the motor 30. The top of the pump body is spaced apart from the bottom of the refrigerant passage 20, and the motor 30 is drivenly connected to the pump body. The motor 30 may consist of a stator and a rotor, and the motor 30 and the pump body may be driven by a crankshaft. Furthermore, the housing 10 of this embodiment of the invention has a top cover with an exhaust port.

[0033] This can be understood as follows: in this embodiment of the invention, the radial projection of the motor 30 is located within the area of ​​the circumferential surface where the refrigerant channel 20 is located. That is, neither the upper nor lower end of the motor 30 extends beyond the upper or lower end of the refrigerant channel 20 in the axial direction, to prevent the motor 30 from blocking the refrigerant channel 20. In this way, since the refrigerant channel 20 is provided on the inner circumferential wall of the housing 10, the stator of the motor 30 does not need to be additionally recessed on its outer circumferential wall to create a groove for the refrigerant to pass through. This ensures that the outer diameter of the stator of the motor 30 is perfectly round and does not affect the thermal fitting fixation between the stator and the housing 10.

[0034] Optionally, in some embodiments of this utility model, the axial distance H1 between the bottom of the motor 30 and the bottom of the refrigerant channel 20 and the axial distance H2 between the top of the motor 30 and the top of the refrigerant channel 20 satisfy the relationship: 2H1=H2.

[0035] Optionally, in some embodiments of this invention, a plurality of refrigerant channels 20 are distributed at equal intervals along the circumferential direction. It is understood that the number of refrigerant channels 20 in this invention can be designed according to actual needs and is not limited to a specific number; refrigerant flow can also be achieved when there is only one refrigerant channel 20. Furthermore, the spacing between the refrigerant channels 20 can also be designed to be unequal, and is not limited to the equal-spacing distribution described in the above embodiments.

[0036] Optionally, in some embodiments of this invention, the refrigerant channel 20 has a rectangular projection shape in the radial direction. It is worth noting that the radial projection shape of the refrigerant channel 20 is not limited to a rectangle, but can also be S-shaped, curved, or other shapes.

[0037] Optionally, in some embodiments of the present invention, the cross-sectional shape of several refrigerant channels 20 in the radial direction is one or more of the following: arc shape, trapezoidal shape, triangle shape, polygon shape.

[0038] A second aspect of this utility model provides a heating, ventilation, and air conditioning (HVAC) device, which includes the compressor of any of the above-mentioned embodiments. According to the HVAC device of this utility model, by forming a plurality of refrigerant channels 20 for refrigerant flow in recesses on the inner peripheral wall of the compressor housing 10, the integrity of the circular outer diameter of the stator of the motor 30 can be improved, thereby reducing the deformation of the stator of the motor 30 and improving the performance of the motor 30.

[0039] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model's compressor and HVAC equipment. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A compressor, characterized in that: The device includes a housing and a motor. The housing is a cylindrical structure with an exhaust port at the top. The inner circumferential wall of the housing is radially recessed to form several refrigerant channels. These refrigerant channels are spaced apart along the circumferential direction, and the length direction of each refrigerant channel is parallel to the axial direction of the housing. A fixing part for abutting and fixing the motor is formed between two adjacent refrigerant channels. The motor divides the interior of the housing into an upper chamber and a lower chamber. The upper and lower ends of the refrigerant channels are respectively connected to the upper chamber and the lower chamber. The axial distance between the bottom of the refrigerant channel and the bottom of the housing is L1, and the axial distance between the bottom of the motor and the bottom of the housing is L2, where 0 < L1 < L2. The axial distance between the top of the refrigerant channel and the bottom of the housing is L3, and the axial distance between the top of the motor and the bottom of the housing is L4, where L4 < L3.

2. The compressor according to claim 1, characterized in that: The axial distance between the bottom of the motor and the bottom of the refrigerant channel is H1, and the axial distance between the top of the motor and the top of the refrigerant channel is H2, where 0 < H1 < H2.

3. The compressor according to claim 1, characterized in that: Several of the refrigerant channels are distributed at equal intervals along the circumference.

4. The compressor according to claim 1, characterized in that: The refrigerant channel has a rectangular projection shape in the radial direction.

5. The compressor according to claim 1, characterized in that: The cross-sectional shape of some of the refrigerant channels in the radial direction is one or more of the following: arc shape, trapezoidal shape, triangle shape, polygon shape.

6. The compressor according to claim 2, characterized in that: The axial distance H1 between the bottom of the motor and the bottom of the refrigerant channel and the axial distance H2 between the top of the motor and the top of the refrigerant channel satisfy the relationship: 2H1=H2.

7. The compressor according to claim 1, characterized in that: It also includes a pump body, which is disposed on the inner peripheral wall of the housing and located below the motor; the top of the pump body is spaced apart from the bottom of the refrigerant channel, and the motor is drivenly connected to the pump body.

8. The compressor according to claim 1, characterized in that: The top of the housing is provided with a top cover, and the top cover has the exhaust port.

9. A heating, ventilation, and air conditioning (HVAC) device, characterized in that: Includes the compressor according to any one of claims 1 to 8.

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