Compressor and heating and ventilation equipment

Abstract

The compressor comprises a shell, a motor, a pump body and a communicating pipeline, the shell is of a cylindrical structure with an exhaust pipe arranged at the upper end, and the motor and the pump body are arranged in the inner circumferential wall of the shell from top to bottom respectively. The interior of the shell is divided into an upper chamber and a lower chamber by the motor; the communicating pipeline is arranged on the outer side wall of the shell, the upper end of the communicating pipeline communicates with the upper cavity, the lower end of the communicating pipeline communicates with the lower cavity, and the communicating point of the communicating pipeline and the upper cavity is located above the motor; the communication point of the communication pipeline and the lower cavity is located between the motor and the pump body. According to the compressor, the communicating pipeline for the refrigerant to circulate is arranged on the outer side wall of the shell of the compressor, so that the integrity of the whole circle of the outer diameter of the motor stator can be improved, the deformation condition of the motor stator is reduced, and the motor performance is improved.

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 providing a connecting pipe for refrigerant flow on the outer wall of the compressor housing, the integrity of the circular shape of the motor stator's outer diameter can be improved, thereby reducing stator deformation and improving motor performance.

[0005] To achieve the above objectives, the first aspect of this utility model provides a compressor, including a housing, a motor, a pump body, and a connecting pipe. The housing is a cylindrical structure with an exhaust pipe at its upper end. The motor and the pump body are respectively built into the inner peripheral wall of the housing from top to bottom. The motor divides the interior of the housing into an upper chamber and a lower chamber. The connecting pipe is disposed on the outer side wall of the housing. The upper end of the connecting pipe is connected to the upper chamber, and the lower end of the connecting pipe is connected to the lower chamber. The connection point between the connecting pipe and the upper chamber is located above the motor, and the connection point between the connecting pipe and the lower chamber is located between the motor and the pump body.

[0006] Therefore, according to the compressor of this utility model, by providing a connecting pipe for refrigerant flow on the outer wall of the housing of the compression chamber, it is not necessary to separately machine a groove for refrigerant to pass through on the outer peripheral wall of the motor stator. The connecting pipe allows the refrigerant to bypass the motor and flow to the upper chamber above the motor. The outer peripheral wall of the motor stator can maintain a round structure and be thermally fixed to the inner peripheral wall of the housing. This makes it less likely for deformation to occur when the motor stator and the housing are thermally connected, ensuring the structure of the motor, effectively improving the efficiency of the motor, and reducing noise generation.

[0007] In one embodiment, the connecting pipe includes a central straight pipe, an upper branch pipe, and a lower branch pipe. The central straight pipe is parallel to the axis of the shell. One end of the upper branch pipe is connected to the upper end of the central straight pipe, and the other end of the upper branch pipe is connected to the upper chamber. One end of the lower branch pipe is connected to the lower end of the central straight pipe, and the other end of the lower branch pipe is connected to the lower chamber.

[0008] In one embodiment, the upper branch pipe and the lower branch pipe are symmetrically arranged relative to the middle straight pipe, and the upper branch pipe, the middle straight pipe and the lower branch pipe are integrally formed.

[0009] In one embodiment, the included angle between the upper branch pipe and the middle straight pipe is α, where 90°≤α≤135°.

[0010] In one embodiment, the included angle between the lower branch pipe and the middle straight pipe is β, where 90°≤β≤135°.

[0011] In one embodiment, a plurality of connecting pipes are provided at intervals along the circumferential direction on the outer side wall of the housing, and the plurality of connecting pipes are respectively arranged at the same height.

[0012] In one embodiment, several of the connecting pipes are arranged at equal intervals on the outer side wall of the housing.

[0013] In one embodiment, the axial distance between the connection point of the connecting pipe and the lower chamber and the bottom of the housing is L1, the axial distance between the bottom of the motor and the bottom of the housing is L2, 0 < L1 < L2; the axial distance between the top of the motor and the bottom of the housing is L3, and the axial distance between the connection point of the connecting pipe and the upper chamber and the bottom of the housing is L4, L3 < L4.

[0014] A second aspect of this utility model provides a heating, ventilation, and air conditioning (HVAC) device, which includes the compressor described in any of the preceding claims. According to the HVAC device of this utility model, by providing a connecting pipe for refrigerant flow on the outer wall of the compressor housing, the integrity of the circular shape of the motor stator's outer diameter can be improved, thereby reducing deformation during the thermal fitting of the motor stator and housing, 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 one of the structural schematic diagrams of the compressor according to an embodiment of the present utility model;

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

[0018] Figure 3 This is the third schematic diagram of the compressor structure according to an embodiment of the present utility model;

[0019] Figure 4 for Figure 3 A schematic cross-sectional view along direction AA is shown.

[0020] Figure 5 This is one of the structural schematic diagrams of the compressor housing according to an embodiment of the present utility model;

[0021] Figure 6 This is the second schematic diagram of the compressor housing according to an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] 10. Shell; 11. Upper chamber; 12. Lower chamber; 20. Motor; 30. Connecting pipe; 31. Middle straight pipe; 32. Upper branch pipe; 33. Lower branch pipe. 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, considering the refrigerant path, compressor motors typically have refrigerant channels distributed around the outer diameter of the motor. 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. Although this structure reserves a certain cross-section for the refrigerant channel, it damages the integrity of the iron core. As a result, when the motor stator and the compressor housing are thermally fitted together, the stator is prone to elliptical deformation, which leads to uneven air gap lengths between the motor stator and rotor, resulting in decreased motor performance and increased noise generated during motor 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 providing a connecting pipe 30 for refrigerant flow on the outer wall of the compressor housing 10, the integrity of the circular shape of the stator outer diameter of the motor 20 can be improved, thereby reducing the deformation of the stator of the motor 20 and improving the performance of the motor 20.

[0029] Please see Figures 1 to 6 The first aspect of this utility model provides a compressor, including a housing 10, a motor 20, a pump body, and a connecting pipe 30. The housing 10 is a cylindrical structure with an exhaust pipe at the upper end. The motor 20 and the pump body are respectively built into the inner peripheral wall of the housing 10 from top to bottom. The motor 20 divides the interior of the housing 10 into an upper chamber 11 and a lower chamber 12. The connecting pipe 30 is disposed on the outer side wall of the housing 10. The upper end of the connecting pipe 30 is connected to the upper chamber 11, and the lower end of the connecting pipe 30 is connected to the lower chamber 12. The connection point between the connecting pipe 30 and the upper chamber 11 is located above the motor 20, and the connection point between the connecting pipe 30 and the lower chamber 12 is located between the motor 20 and the pump body.

[0030] Therefore, according to the compressor of this utility model embodiment, by providing a connecting pipe 30 for refrigerant flow on the outer wall of the housing 10 of the compression chamber, it is not necessary to process additional grooves for refrigerant to pass through on the outer peripheral wall of the stator of the motor 20. The connecting pipe 30 allows the refrigerant to bypass the motor 20 and flow to the upper chamber 11 above the motor 20. The outer peripheral wall of the stator of the motor 20 can maintain a round structure and be thermally fixed with the inner peripheral wall of the housing 10. This makes it less likely for deformation to occur when the stator of the motor 20 is thermally connected to the housing 10, ensuring the structure of the motor 20, effectively improving the efficiency of the motor 20, and reducing noise generation.

[0031] Specifically, in this embodiment of the present invention, the axial distance between the connection point of the connecting pipe 30 and the lower chamber 12 and the bottom of the housing 10 is L1, the axial distance between the bottom of the motor 20 and the bottom of the housing 10 is L2, 0 < L1 < L2; the axial distance between the top of the motor 20 and the bottom of the housing 10 is L3, and the axial distance between the connection point of the connecting pipe 30 and the upper chamber 11 and the bottom of the housing 10 is L4, L3 < L4. It can be understood that, in this embodiment of the present invention, the motor 20 divides the interior of the housing 10 into two chambers along the axial direction: an upper chamber 11 and a lower chamber 12. The connection point between the connecting pipe 30 and the lower chamber 12 is located below the motor 20, while the connection point between the connecting pipe 30 and the upper chamber 11 is located above the motor 20. In this way, the refrigerant discharged from the pump body in the lower chamber 12 can bypass the motor 20 and enter the upper chamber 11 of the housing 10 through the connecting pipe 30. This eliminates the need for the motor 20 to have additional grooves for the refrigerant to flow through on the outer peripheral wall of its stator, ensuring that the outer diameter of the stator of the motor 20 is round and does not affect the thermal connection between the stator and the housing 10, effectively preventing the stator from deforming or other adverse working conditions.

[0032] Furthermore, the connecting pipe 30 in this embodiment of the present invention includes a central straight pipe 31, an upper branch pipe 32, and a lower branch pipe 33. The central straight pipe 31 is parallel to the axis of the shell 10. One end of the upper branch pipe 32 is connected to the upper end of the central straight pipe 31, and the other end of the upper branch pipe 32 is connected to the upper chamber 11. One end of the lower branch pipe 33 is connected to the lower end of the central straight pipe 31, and the other end of the lower branch pipe 33 is connected to the lower chamber 12.

[0033] Optionally, in some embodiments of this utility model, the upper branch pipe 32 and the lower branch pipe 33 are symmetrically arranged relative to the middle straight pipe 31, and the upper branch pipe 32, the middle straight pipe 31, and the lower branch pipe 33 are integrally formed. It can be understood that in these embodiments, the connecting pipe 30 is composed of the integrally formed upper branch pipe 32, the middle straight pipe 31, and the lower branch pipe 33, and the upper branch pipe 32 and the lower branch pipe 33 are symmetrically designed relative to the middle straight pipe 31.

[0034] Optionally, in some embodiments of this utility model, the included angle between the upper branch pipe 32 and the middle straight pipe 31 is α, where 90°≤α≤135°.

[0035] Optionally, in some embodiments of this utility model, the included angle between the lower branch pipe 33 and the middle straight pipe 31 is β, where 90°≤β≤135°.

[0036] Optionally, in some embodiments of this utility model, a plurality of connecting pipes 30 are provided at intervals along the circumferential direction on the outer side wall of the housing 10, and the plurality of connecting pipes 30 are respectively arranged at the same height. In these embodiments, the plurality of connecting pipes 30 are respectively arranged at equal intervals on the outer side wall of the housing 10.

[0037] The following is combined with Figures 1 to 6 The following is a detailed description of a specific embodiment of the compressor according to the present invention. It is worth understanding that the following is merely an illustrative description and should not be construed as limiting the present invention.

[0038] like Figures 1 to 6 As shown, this embodiment provides a compressor, including a housing 10, a motor 20, a pump body, and a connecting pipe 30. The housing 10 is a cylindrical structure with an exhaust pipe at the upper end. The motor 20 and the pump body are respectively built into the inner peripheral wall of the housing 10 from top to bottom. The motor 20 divides the interior of the housing 10 into an upper chamber 11 and a lower chamber 12. The connecting pipe 30 is disposed on the outer side wall of the housing 10. The upper end of the connecting pipe 30 is connected to the upper chamber 11, and the lower end of the connecting pipe 30 is connected to the lower chamber 12. The connection point between the connecting pipe 30 and the upper chamber 11 is located above the motor 20, and the connection point between the connecting pipe 30 and the lower chamber 12 is located between the motor 20 and the pump body.

[0039] Specifically, in this embodiment, the axial distance between the connection point of the connecting pipe 30 and the lower chamber 12 and the bottom of the housing 10 is L1, the axial distance between the bottom of the motor 20 and the bottom of the housing 10 is L2, 0 < L1 < L2; the axial distance between the top of the motor 20 and the bottom of the housing 10 is L3, and the axial distance between the connection point of the connecting pipe 30 and the upper chamber 11 and the bottom of the housing 10 is L4, L3 < L4.

[0040] In this embodiment, the connecting pipe 30 includes a central straight pipe 31, an upper branch pipe 32, and a lower branch pipe 33. The central straight pipe 31 is parallel to the axis of the shell 10. One end of the upper branch pipe 32 is connected to the upper end of the central straight pipe 31, and the other end of the upper branch pipe 32 is connected to the upper chamber 11. One end of the lower branch pipe 33 is connected to the lower end of the central straight pipe 31, and the other end of the lower branch pipe 33 is connected to the lower chamber 12. The upper branch pipe 32 and the lower branch pipe 33 are symmetrically arranged relative to the central straight pipe 31, and are integrally formed. Furthermore, in this embodiment, the included angle between the upper branch pipe 32 and the central straight pipe 31 is α, where α = 90°; the included angle between the lower branch pipe 33 and the central straight pipe 31 is β, where β = 90°. Further, in this embodiment, a connecting pipe 30 is spaced along the circumferential direction on the outer wall of the shell 10.

[0041] The following is combined with Figures 1 to 6 The following is a detailed description of a specific embodiment of the compressor according to the present invention. It is worth understanding that the following is merely an illustrative description and should not be construed as limiting the present invention.

[0042] like Figures 1 to 6 As shown, this embodiment provides a compressor, including a housing 10, a motor 20, a pump body, and a connecting pipe 30. The housing 10 is a cylindrical structure with an exhaust pipe at the upper end. The motor 20 and the pump body are respectively built into the inner peripheral wall of the housing 10 from top to bottom. The motor 20 divides the interior of the housing 10 into an upper chamber 11 and a lower chamber 12. The connecting pipe 30 is disposed on the outer side wall of the housing 10. The upper end of the connecting pipe 30 is connected to the upper chamber 11, and the lower end of the connecting pipe 30 is connected to the lower chamber 12. The connection point between the connecting pipe 30 and the upper chamber 11 is located above the motor 20, and the connection point between the connecting pipe 30 and the lower chamber 12 is located between the motor 20 and the pump body.

[0043] Specifically, in this embodiment, the axial distance between the connection point of the connecting pipe 30 and the lower chamber 12 and the bottom of the housing 10 is L1, the axial distance between the bottom of the motor 20 and the bottom of the housing 10 is L2, 0 < L1 < L2; the axial distance between the top of the motor 20 and the bottom of the housing 10 is L3, and the axial distance between the connection point of the connecting pipe 30 and the upper chamber 11 and the bottom of the housing 10 is L4, L3 < L4.

[0044] In this embodiment, the connecting pipe 30 includes a central straight pipe 31, an upper branch pipe 32, and a lower branch pipe 33. The central straight pipe 31 is parallel to the axis of the shell 10. One end of the upper branch pipe 32 is connected to the upper end of the central straight pipe 31, and the other end of the upper branch pipe 32 is connected to the upper chamber 11. One end of the lower branch pipe 33 is connected to the lower end of the central straight pipe 31, and the other end of the lower branch pipe 33 is connected to the lower chamber 12. The upper branch pipe 32 and the lower branch pipe 33 are symmetrically arranged relative to the central straight pipe 31, and are integrally formed. Furthermore, in this embodiment, the included angle between the upper branch pipe 32 and the central straight pipe 31 is α, where α = 120°; the included angle between the lower branch pipe 33 and the central straight pipe 31 is β, where β = 120°. Further, in this embodiment, two connecting pipes 30 are spaced apart along the circumferential direction on the outer wall of the shell 10, and the two connecting pipes 30 are arranged at the same height.

[0045] The following is combined with Figures 1 to 6 The following is a detailed description of a specific embodiment of the compressor according to the present invention. It is worth understanding that the following is merely an illustrative description and should not be construed as limiting the present invention.

[0046] like Figures 1 to 6 As shown, this embodiment provides a compressor, including a housing 10, a motor 20, a pump body, and a connecting pipe 30. The housing 10 is a cylindrical structure with an exhaust pipe at the upper end. The motor 20 and the pump body are respectively built into the inner peripheral wall of the housing 10 from top to bottom. The motor 20 divides the interior of the housing 10 into an upper chamber 11 and a lower chamber 12. The connecting pipe 30 is disposed on the outer side wall of the housing 10. The upper end of the connecting pipe 30 is connected to the upper chamber 11, and the lower end of the connecting pipe 30 is connected to the lower chamber 12. The connection point between the connecting pipe 30 and the upper chamber 11 is located above the motor 20, and the connection point between the connecting pipe 30 and the lower chamber 12 is located between the motor 20 and the pump body.

[0047] Specifically, in this embodiment, the axial distance between the connection point of the connecting pipe 30 and the lower chamber 12 and the bottom of the housing 10 is L1, the axial distance between the bottom of the motor 20 and the bottom of the housing 10 is L2, 0 < L1 < L2; the axial distance between the top of the motor 20 and the bottom of the housing 10 is L3, and the axial distance between the connection point of the connecting pipe 30 and the upper chamber 11 and the bottom of the housing 10 is L4, L3 < L4.

[0048] In this embodiment, the connecting pipe 30 includes a central straight pipe 31, an upper branch pipe 32, and a lower branch pipe 33. The central straight pipe 31 is parallel to the axis of the shell 10. One end of the upper branch pipe 32 is connected to the upper end of the central straight pipe 31, and the other end of the upper branch pipe 32 is connected to the upper chamber 11. One end of the lower branch pipe 33 is connected to the lower end of the central straight pipe 31, and the other end of the lower branch pipe 33 is connected to the lower chamber 12. The upper branch pipe 32 and the lower branch pipe 33 are symmetrically arranged relative to the central straight pipe 31, and are integrally formed. Furthermore, in this embodiment, the included angle between the upper branch pipe 32 and the central straight pipe 31 is α, where α = 135°; the included angle between the lower branch pipe 33 and the central straight pipe 31 is β, where β = 135°. Furthermore, in this embodiment, 12 connecting pipes 30 are provided at intervals along the circumferential direction on the outer side wall of the shell 10, and the 12 connecting pipes 30 are respectively arranged at the same height.

[0049] A second aspect of this utility model provides a heating, ventilation, and air conditioning (HVAC) device, which includes the compressor described above. According to this utility model, by providing a connecting pipe 30 for refrigerant flow on the outer wall of the compressor housing 10, the integrity of the circular shape of the stator outer diameter of the motor 20 can be improved, thereby reducing deformation during the thermal connection between the stator of the motor 20 and the housing 10, and improving the performance of the motor 20.

[0050] 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, a motor, a pump body, and a connecting pipe. The housing is a cylindrical structure with an exhaust pipe at the top. The motor and the pump body are respectively built into the inner peripheral wall of the housing from top to bottom. The motor divides the interior of the housing into an upper chamber and a lower chamber. The connecting pipe is disposed on the outer wall of the housing. The upper end of the connecting pipe is connected to the upper chamber, and the lower end of the connecting pipe is connected to the lower chamber. The connection point between the connecting pipe and the upper chamber is located above the motor, and the connection point between the connecting pipe and the lower chamber is located between the motor and the pump body.

2. The compressor according to claim 1, characterized in that: The connecting pipe includes a central straight pipe, an upper branch pipe, and a lower branch pipe. The central straight pipe is parallel to the axis of the shell. One end of the upper branch pipe is connected to the upper end of the central straight pipe, and the other end of the upper branch pipe is connected to the upper chamber. One end of the lower branch pipe is connected to the lower end of the central straight pipe, and the other end of the lower branch pipe is connected to the lower chamber.

3. The compressor according to claim 2, characterized in that: The upper branch pipe and the lower branch pipe are respectively symmetrically arranged relative to the middle straight pipe, and the upper branch pipe, the middle straight pipe and the lower branch pipe are integrally formed.

4. The compressor according to claim 2, characterized in that: The included angle between the upper branch pipe and the middle straight pipe is α, where 90°≤α≤135°.

5. The compressor according to claim 2, characterized in that: The included angle between the lower branch pipe and the middle straight pipe is β, where 90°≤β≤135°.

6. The compressor according to claim 1, characterized in that: The outer wall of the shell is provided with a plurality of connecting pipes at intervals along the circumferential direction, and the plurality of connecting pipes are respectively arranged at the same height.

7. The compressor according to claim 6, characterized in that: Several of the connecting pipes are respectively arranged at equal intervals on the outer side wall of the shell.

8. The compressor according to claim 1, characterized in that: The axial distance between the connection point of the connecting pipe and the lower chamber 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 motor and the bottom of the housing is L3, and the axial distance between the connection point of the connecting pipe and the upper chamber and the bottom of the housing is L4, where L3 < L4.

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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