Compressor shell and compressor

Abstract

The utility model provides a compressor shell (10) which comprises a motor containing cavity (11) used for containing a motor; and the at least two independent cooling runners (12 and 13) are arranged around the periphery of the motor accommodating cavity (11) and are sequentially arranged along the axial direction of the motor.

Description

TECHNICAL FIELD

[0001] The utility model relates to compressor technical field, concretely relates to compressor casing and compressor. BACKGROUND

[0002] In the current compressor, the motor as a part of the compressor is integrated inside the compressor casing, so that the movement and torque transmission of the motor and the screw rotor are all completed inside the closed compressor casing, without the need for dynamic sealing treatment, improving the sealing and safety of the compressor.

[0003] As shown in Figure 1 In the current motor cooling structure of the compressor, the motor arranged inside the compressor casing is usually cooled by means of a cooling medium (such as air) with a relatively low temperature. When the motor starts to be cooled, the temperature of the cooling medium is relatively low. After gradually exchanging heat with the motor, the temperature of the cooling medium will rise at the end of the cooling of the motor, thus causing uneven temperature distribution of the cooling environment of the entire motor, presenting an uneven cooling condition. At this time, the insufficient cooling of the high-temperature zone becomes a limitation of the operation of the motor, while the cooling of the low-temperature zone is too sufficient, so that the motor cannot exert its maximum performance. In this way, the overall cooling effect of the motor does not reach the best working state.

[0004] The cooling performance of the motor will affect the reliability, energy efficiency and service life of the motor, especially the insulation life of the motor. For the existing structure, the cooling effect of the motor completely depends on the structure of the cooling flow channel inside the compressor, and the motor needs to work in a cooling environment with uniform cooling and stable temperature.

[0005] As a power source, the noise and vibration of the motor will affect the overall noise and vibration level of the compressor. Reducing and isolating the vibration noise of the motor is also an important factor to reduce the vibration noise level of the compressor.

[0006] The current compressor usually adopts a single cooling flow channel and a single-layer wall casing, the temperature distribution of the motor cooling environment is uneven, and the motor vibration noise is also obvious during the operation of the compressor.

[0007] The utility model will improve the uniform stability of the cooling environment temperature field of the motor, and at the same time, improve the vibration and noise reduction level of the motor of the same level in the compressor. UTILITY MODEL CONTENTS

[0008] The utility model provides a kind of compressor casing, comprising:

[0009] Motor containing cavity, for containing motor;

[0010] At least two independent cooling flow channels are arranged around the outer periphery of the motor containing cavity and sequentially arranged along the axial direction of the motor.

[0011] In some embodiments, the housing portion of the compressor housing forming the motor receiving cavity is configured as a double-walled structure comprising an outer wall and an inner wall forming a cooling cavity therebetween.

[0012] In some embodiments, the at least two independent cooling flow channels are located on an inner surface of the inner wall.

[0013] In some embodiments, the at least two independent cooling flow channels are configured as channels formed by grooving on the inner surface.

[0014] In some embodiments, the at least two independent cooling flow channels are configured as pipes embedded in the inner surface.

[0015] In some embodiments, a reinforcing rib is provided on both the inner surface of the outer wall and the outer surface of the inner wall along the circumference.

[0016] In some embodiments, the cooling cavity is through for passage of a cooling medium.

[0017] In some embodiments, the cooling cavity comprises at least two different-volume sound-absorbing cavities for absorbing noise entering therein.

[0018] In some embodiments, the cooling cavity is configured as a sound-absorbing structure, an air inlet of the cooling cavity is in communication with the outside, and an air outlet of the cooling cavity is closed.

[0019] In some embodiments, the respective air inlets and air outlets of the at least two independent cooling flow channels are independent of each other.

[0020] In some embodiments, the at least two independent cooling flow channels are uniformly spaced around the outer periphery of the motor receiving cavity.

[0021] According to another aspect, the utility model provides a compressor, comprising a compressor housing and a motor, the motor being located in the motor receiving cavity.

[0022] In some embodiments, the compressor comprises a compressor air inlet for external air to enter the interior of the compressor housing, and the at least two fluid channels are in fluid communication with the compressor air inlet.

[0023] In some embodiments, the compressor air inlet is in fluid communication with the cooling cavity.

[0024] In some embodiments, the compressor comprises a semi-hermetic screw compressor.

[0025] By independently arranging multiple cooling channels in segments along the circumference of the motor, independent cooling of the entire axial dimension of the motor is achieved, ensuring consistent cooling in each area and improving the uniformity and stability of the temperature field in the motor's cooling environment.

[0026] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention. In the drawings:

[0028] Figure 1 This is a schematic diagram of the current compressor structure;

[0029] Figure 2 This is a schematic diagram of the compressor according to an embodiment of the present utility model;

[0030] Figure 3 for Figure 2 The compressor shown is a cross-sectional view.

[0031] Figure 4 This is a schematic diagram of the structure of the first cooling channel 12;

[0032] Figure 5 A schematic diagram of the structure of the second cooling channel 13; and

[0033] Figure 6 This is a schematic diagram of the assembly structure of the first cooling channel 12 and the second cooling channel 13;

[0034] Reference numerals: 10, compressor housing; 11, motor housing cavity; 12, first cooling channel; 13, second cooling channel; 14, outer wall of housing; 15, inner wall of housing; 16, cooling cavity; 20, motor. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0036] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless otherwise specifically indicated. At the same time, it should be understood that, for the convenience of description, the sizes of various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The technology, method and equipment known to those skilled in the related art can not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as part of the authorized description. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0037] In the description of the present application, it should be understood that the use of the words "first", "second" and the like to qualify parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore cannot be understood as a limitation on the scope of protection of the present application.

[0038] In the description of the present application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, vertical, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each part itself.

[0039] Figure 2 A compressor according to an embodiment of the present application is shown, which comprises a compressor housing 10 and a motor 20, the motor 20 being arranged in the compressor housing 10.

[0040] Figure 3 As shown in Figure 2The compressor shown in the cross-sectional view, the motor accommodating cavity 11 is provided in the compressor housing 10, the motor 20 of the compressor is arranged in the motor accommodating cavity 11, at least two independent cooling flow channels are provided between the compressor housing 10 and the motor 20, so that the cooling medium flows through them to take away the heat from the motor 20. At least two independent cooling flow channels are arranged around the outer periphery of the motor accommodating cavity 11, the motor 20 is arranged in the motor accommodating cavity 11, at least two independent cooling flow channels are arranged on the outer periphery of the motor 20, and are independent of each other, and at least two independent cooling flow channels are arranged in sequence along the axial direction of the motor 20, that is, the air inlet of at least two independent cooling flow channels is independent of each other, and the air outlet of at least two independent cooling flow channels is also independent of each other, the air from the compressor suction port enters the air inlet of at least two independent cooling flow channels synchronously, and then is discharged from the respective air outlets. In this way, the motor 20 can be synchronously segmented and cooled by multiple independent cooling flow channels, so that the cooling of each region of the motor 20 remains consistent, and there is no local insufficient cooling or local excessive cooling.

[0041] The temperature distribution of the motor in the flow direction of the cooling medium is relatively uniform, the temperature difference between the beginning of cooling and the end of cooling can be controlled to be minimum, the temperature field distribution of the motor cooling environment is uniform, the limit working capacity of the motor is maximized, the working efficiency of the motor is improved, the insulation life of the motor is prolonged, and the motor vibration and noise during the operation of the compressor are lower.

[0042] At least two independent cooling flow channels are uniformly and spacedly arranged around the outer periphery of the motor accommodating cavity 11, so that the cooling efficiency of each region of the motor 12 accommodated in the motor accommodating cavity 11 remains substantially consistent, and the surrounding mode of the cooling flow channel can be one of spiral, half-spiral, straight-through and reciprocating arrangement.

[0043] The shell part of the compressor housing 10 forming the motor accommodating cavity 11 is a double-layer wall structure, which includes an outer wall 14 and an inner wall 15, and a cooling cavity 16 is formed between the outer wall 14 and the inner wall 15. The inner wall 15 surrounds the motor 20, and the air from the compressor suction port enters the cooling cavity 16 while entering the air inlets of at least two independent cooling flow channels, thereby cooling the outer wall 14 and the inner wall 15 and further taking away the heat from the motor 20. Thus, through the double cooling functions of at least two independent cooling flow channels and the cooling cavity, the heat dissipation area is increased, and the cooling efficiency of the motor 20 is further improved. In addition, the double-layer wall structure lengthens the transmission path of the vibration and noise emitted from the motor, thereby achieving the technical effects of reducing vibration and noise.

[0044] As Figures 4-6As shown, the at least two independent cooling channels can include a first cooling channel 12 and a second cooling channel 13, which are located on the inner surface of the inner wall 15, the first and second cooling channels 12 and 13 can be configured as channels formed by grooving on the inner surface of the inner wall 15, or the first and second cooling channels 12 and 13 can also be pipes embedded in the inner surface of the inner wall 15. Of course, more than two cooling channels can also be arranged as needed.

[0045] In order to avoid the insufficient strength of the double-layer wall of the compressor housing 10, a reinforcing rib can be arranged on at least one of the inner surface of the outer wall 14 and the outer surface of the inner wall 15 along the circumference, the reinforcing rib can be a sheet, and multiple rows can be arranged.

[0046] When the heat generation of the motor 20 is large, the cooling cavity 16 can be through, the air inlet of the cooling cavity 16 is communicated with the compressor suction port, allowing the air from the compressor suction port to pass through, and the air is discharged from the air outlet of the cooling cavity 16. Since the cooling cavity 16 increases the heat exchange area, the heat exchange efficiency of the motor 20 is improved.

[0047] When the heat generation of the motor 20 is small, the air inlet of the cooling cavity 16 is communicated with the compressor suction port, and the air outlet of the cooling cavity 16 is closed, the cooling cavity 16 plays a role in isolating vibration and absorbing noise. The cooling cavity 16 is divided into at least two different volume sound-absorbing cavities, which can absorb different frequencies of noise entering the cavity, so that the noise absorption efficiency is better.

[0048] The compressor includes a compressor suction port allowing external air to enter the inside of the compressor housing, and the at least two fluid channels are in fluid communication with the compressor suction port, so that the air from the compressor suction port enters the at least two fluid channels simultaneously.

[0049] The compressor suction port is in fluid communication with the cooling cavity 16, so that the air in the at least two fluid channels also enters the cooling cavity 16 simultaneously, so that the dual cooling effect of the motor 21 is realized at the same time.

[0050] The compressor can be configured as a semi-hermetic screw compressor, or the motor as a part of the compressor is integrated into other types of compressors in the compressor housing.

[0051] It should be noted that the above examples are used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones, and all of them should be covered in the technical solution range claimed by the present application.

Claims

1. A compressor housing (10), characterized in that, include: Motor housing cavity (11) for accommodating the motor; At least two independent cooling channels (12, 13) are arranged around the outer periphery of the motor housing cavity (11) and are arranged sequentially along the axial direction of the motor.

2. The compressor housing (10) according to claim 1, wherein the housing portion of the compressor housing (10) forming the motor receiving cavity (11) is configured as a double-wall structure, including an outer wall (14) and an inner wall (15), and a cooling cavity (16) is formed between the outer wall (14) and the inner wall (15).

3. The compressor housing (10) according to claim 2, characterized in that, The at least two independent cooling channels (12, 13) are located on the inner surface of the inner wall (15).

4. The compressor housing (10) according to claim 3, characterized in that, The at least two independent cooling channels (12, 13) are configured as channels formed by slotting on the inner surface.

5. The compressor housing (10) according to claim 3, characterized in that, The at least two independent cooling channels (12, 13) are configured as pipes embedded in the inner surface.

6. The compressor housing (10) according to claim 2, characterized in that, Reinforcing ribs are provided along the circumferential direction on the inner surface of the outer wall (14) and the outer surface of the inner wall (15).

7. The compressor housing (10) according to claim 2, characterized in that, The cooling cavity (16) is through, allowing the cooling medium to pass through.

8. The compressor housing (10) according to claim 2, characterized in that, The cooling cavity (16) includes at least two silencing cavities of different volumes for absorbing noise entering therein.

9. The compressor housing (10) according to claim 2, characterized in that, The cooling cavity (16) is configured as a noise-absorbing structure, the air inlet of the cooling cavity (16) is connected to the outside, and the air outlet of the cooling cavity (16) is closed.

10. The compressor housing (10) according to claim 2, characterized in that, The air inlets and outlets of at least two independent cooling channels (12, 13) are independent of each other.

11. The compressor housing (10) according to claim 2, characterized in that, At least two independent cooling channels (12, 13) are arranged at equal intervals around the outer periphery of the motor housing cavity (11).

12. A compressor, characterized in that, It includes a compressor housing (10) as described in any one of claims 1-11 and a motor (20), the motor (20) being located in the motor receiving cavity (11).

13. The compressor according to claim 12, characterized in that, It includes a compressor intake port for external air to enter the compressor housing, and the at least two cooling channels (12, 13) are in fluid communication with the compressor intake port.

14. The compressor according to claim 12, characterized in that, The compressor intake port is in fluid communication with the cooling cavity (16).

15. The compressor according to claim 12, characterized in that, This includes semi-hermetic screw compressors.

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