An air conditioner compressor

Abstract

The utility model discloses an air conditioner compressor relates to air compressor technical field, including the casing, be provided with motor in the casing, the fixed bearing seat of casing is provided with, the seat cavity is opened to have in bearing seat, be provided with bearing in the seat cavity, the output shaft of motor sets up in the inner ring of bearing, the outer ring of bearing is provided with the dynamic scroll plate of floating, the dynamic scroll plate is provided with static scroll plate on the side away from motor, static scroll plate fixed setting in the inside of casing, the back pressure chamber is formed between dynamic scroll plate and bearing seat, the exhaust port for discharging gas is opened to have on static scroll plate, and the air passage and air inlet for inhaling gas, the utility model discloses provide air conditioner compressor through setting the exhaust hole and the air hole at the different position of static scroll plate, make the air inlet passage section be curve shape, further realize the effect of slow pressure.

Description

Technical Field

[0001] This utility model relates to the field of air compressor technology, and in particular to an air conditioning compressor. Background Technology

[0002] An air conditioner compressor, driven by an electric motor, draws in low-temperature, low-pressure refrigerant gas. The gas's volume is then changed by the reciprocating motion of a piston within a cylinder or the rotation of a rotor, compressing the refrigerant gas into a high-temperature, high-pressure state to power the refrigeration cycle. The high-temperature, high-pressure refrigerant gas then enters the condenser to cool and condense into a high-pressure liquid. After being depressurized by a throttling device, it enters the evaporator, where it absorbs heat and evaporates into a low-temperature, low-pressure gas. Finally, it is drawn back into the compressor, and this cycle repeats continuously to achieve the cooling or heating function.

[0003] When an existing air conditioning compressor draws in air, the gas enters from the center of the stationary scroll plate and then enters the back pressure chamber through the axial through hole and radial hole on the main shaft. However, the intake channel of this structure is straight, which causes the pressure in the back pressure chamber to be too high at an instant when the air enters the back pressure chamber, resulting in excessive compressor power and increased noise when the compressor is working.

[0004] Therefore, an air conditioning compressor is proposed to solve the above problems. Utility Model Content

[0005] In view of the problem that existing air conditioning compressors draw in air in a straight line from the center of the stationary vortex disk into the back pressure chamber, but this structure causes the pressure in the back pressure chamber to be too high instantaneously when the air enters the back pressure chamber, thereby increasing the compressor noise, this utility model is proposed.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an air conditioning compressor, which includes a housing, a motor disposed inside the housing, a bearing seat fixedly disposed inside the housing, a seat cavity formed on the bearing seat, a bearing disposed inside the seat cavity, an output shaft of the motor disposed within the inner ring of the bearing, a moving scroll plate floatingly disposed on the outer ring of the bearing, a stationary scroll plate disposed on the side of the moving scroll plate away from the motor, the stationary scroll plate being fixedly disposed inside the housing, a back pressure cavity being formed between the moving scroll plate and the bearing seat, and an exhaust port for discharging gas, an air inlet for drawing in gas, and an air intake port formed on the stationary scroll plate.

[0007] Preferably, the air inlet is located on one side of the exhaust port and communicates with the side of the exhaust port, the air inlet is communicated with the air inlet, an air intake channel is formed between the air inlet and the air inlet, the air inlet is communicated with the back pressure chamber, and the cross-section of the air intake channel is curved.

[0008] Preferably, the moving vortex disk has a first air outlet that extends through the axis, and the stationary vortex disk has a second air outlet that extends through the axis, the second air outlet being connected to the first air outlet.

[0009] Preferably, the bearing housing is provided with a regulating valve on the side near the motor for controlling the gas pressure in the back pressure chamber.

[0010] Preferably, the bearing is a deep groove ball bearing.

[0011] Preferably, the housing is provided with multiple mounting feet, all of which are the same shape and size.

[0012] The beneficial effects of this utility model are: 1. By setting the exhaust port and air outlet at different positions on the stationary vortex disk, the cross-section of the intake channel is made curved, thereby achieving a pressure relief effect.

[0013] 2. When the gas pressure in the back pressure chamber exceeds the preset value, the gas is vented through the regulating valve to keep the gas pressure in the back pressure chamber constant and achieve a pressure stabilization effect. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0016] Figure 3 This is a structural diagram of the bearing housing of this utility model.

[0017] Figure 4 This is a schematic diagram of the static vortex disk structure of this utility model.

[0018] Explanation of reference numerals in the attached figures: 1. Housing; 11. Mounting feet; 2. Motor; 3. Bearing housing; 4. Bearing; 5. Moving scroll plate; 51. First air outlet; 6. Stationary scroll plate; 61. Exhaust port; 62. Air inlet; 63. Air passage; 64. Air inlet channel; 65. Second air outlet. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Reference Figures 1 to 4 This invention provides an air conditioning compressor, which includes a housing 1, a motor 2 disposed inside the housing 1, a bearing seat 3 fixedly disposed inside the housing 1, a seat cavity opened on the bearing seat 3, a bearing 4 disposed inside the seat cavity, an output shaft of the motor 2 disposed inside the inner ring of the bearing 4, a moving scroll 5 floatingly disposed on the outer ring of the bearing 4, a stationary scroll 6 disposed on the side of the moving scroll 5 away from the motor 2, the stationary scroll 6 being fixedly disposed inside the housing 1, a back pressure cavity being formed between the moving scroll 5 and the bearing seat 3, and an exhaust port 61 for discharging gas, an air inlet 63 for drawing in gas, and an air inlet 62 opened on the stationary scroll 6.

[0021] Specifically, a motor 2 is installed inside the housing 1, and a bearing seat 3 is also fixedly installed inside the housing 1. The bearing seat 3 has a seat cavity, and a bearing 4 is installed inside the seat cavity. The outer ring of the bearing 4 is fixed to the inner wall of the seat cavity. The output shaft of the motor 2 is fixedly connected to the inner ring of the bearing 4. Furthermore, the bearing 4 is a deep groove ball bearing 4. A moving scroll plate 5 is installed on the side of the bearing 4 away from the motor 2. The moving scroll plate 5 is floating on the bearing 4.

[0022] Specifically, a stationary scroll plate 6 is provided on the side of the moving scroll plate 5 away from the motor 2. The stationary scroll plate 6 is fixedly mounted on the housing 1. A back pressure chamber is formed between the moving scroll plate 5 and the bearing seat 3. The back pressure chamber is a sealed chamber. The gas in the back pressure chamber drives the moving scroll plate 5 to move axially so that the gap between the moving scroll plate 5 and the stationary scroll plate 6 is constant, thereby avoiding gas leakage between the moving scroll plate 5 and the stationary scroll plate 6. The moving vortex disk 5 has an axially penetrating first air outlet 51, and the stationary vortex disk 6 has an axially penetrating second air outlet 65, which is connected to the first air outlet 51. The stationary vortex disk 6 has an exhaust port 61, an air passage 63, and an air inlet 62. The air passage 63 is located on one side of the exhaust port 61 and is connected to the side of the exhaust port 61. The air inlet 62 is connected to the side of the air passage 63. An air intake channel 64 is formed between the air inlet 62 and the air passage 63, that is, the channel connected on the side is the air intake channel 64. The air outlet is connected to the back pressure chamber. The cross section of the air intake channel 64 is curved, that is, the gas travels in the air intake channel 64 in a curved path. The curved design can buffer the gas and prevent the gas from directly entering the back pressure chamber and causing a sudden increase in the pressure of the back pressure chamber. The gas in the back pressure chamber drives the moving scroll 5 to move, and the gas between the moving scroll 5 and the stationary scroll 6 flows from the first outlet 51 and the second outlet 65 to the exhaust port 61 and is discharged from the casing 1. A portion of the gas discharged from the exhaust port 61 is drawn in through the air inlet 63, passes through the air inlet channel 64 and then enters the back pressure chamber through the air inlet 62.

[0023] Specifically, a regulating valve (not shown in the figure) is provided on the side of the bearing housing 3 near the motor 2 to control the gas pressure in the back pressure chamber, so as to prevent the air pressure entering the back pressure chamber from being too high and causing the compressor power to be too high. The regulating valve monitors the gas pressure in the back pressure chamber in real time. When the gas pressure in the back pressure chamber exceeds the preset value, the regulating valve starts to automatically vent gas to keep the gas pressure in the back pressure chamber constant.

[0024] Specifically, the housing 1 is fixedly provided with a plurality of mounting feet 11, all of which have the same shape and size to meet the installation requirements.

[0025] During operation, the compressor starts and exhausts gas. Then, air flows from the air inlet 63 through the air intake channel 64 to the air intake port 62 and finally to the back pressure chamber. The pressure in the back pressure chamber increases, pushing the moving scroll plate 5 towards the stationary scroll plate 6 to maintain the gap between the moving scroll plate 5 and the stationary scroll plate 6 at a preset value. During the movement of the moving scroll plate 5, the gas between the moving scroll plate 5 and the stationary scroll plate 6 flows from the first air outlet 51 and the second air outlet 65 to the exhaust port 61 and is discharged. Part of the gas discharged from the exhaust port 61 is drawn in through the air inlet 63, passes through the air intake channel 64 and the air intake port 62, and enters the back pressure chamber. This process is repeated cyclically to achieve gas compression by the compressor. During this process, the regulating valve monitors the gas pressure in the back pressure chamber in real time. If the gas pressure in the back pressure chamber is greater than the set value, the regulating valve automatically exhausts gas. When the gas pressure in the back pressure chamber decreases to the set value, the regulating valve automatically closes.

[0026] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An air conditioner compressor comprising a casing (1) in which a motor (2) is arranged, characterized in that: The bearing seat (3) is fixedly arranged in the casing (1), a seat cavity is formed in the bearing seat (3), a bearing (4) is arranged in the seat cavity, the output shaft of the motor (2) is arranged in the inner ring of the bearing (4), a floating dynamic scroll plate (5) is arranged on the outer ring of the bearing (4), a static scroll plate (6) is arranged on the side of the dynamic scroll plate (5) away from the motor (2), the static scroll plate (6) is fixedly arranged in the casing (1), a back pressure cavity is formed between the dynamic scroll plate (5) and the bearing seat (3), an exhaust port (61) for discharging gas, a gas inlet port (63) for inhaling gas and an air inlet port (62) are formed in the static scroll plate (6).

2. An air conditioner compressor according to claim 1, characterized in that: The gas inlet port (63) is arranged on the side of the exhaust port (61) and communicates with the side of the exhaust port (61), the air inlet port (62) communicates with the gas inlet port (63), an air inlet channel (64) is formed between the air inlet port (62) and the gas inlet port (63), the air inlet port (62) communicates with the back pressure cavity, and the air inlet channel (64) is a curve in cross section.

3. The air conditioner compressor of claim 1 wherein: An axially penetrating first gas outlet port (51) is formed in the dynamic scroll plate (5), an axially penetrating second gas outlet port (65) is formed in the static scroll plate (6), and the second gas outlet port (65) communicates with the first gas outlet port (51).

4. The air conditioner compressor of claim 1 wherein: An adjusting valve for controlling the gas pressure in the back pressure cavity is arranged on the side of the bearing seat (3) close to the motor (2).

5. The air conditioner compressor of claim 1 wherein: The bearing (4) is a deep groove ball bearing (4).

6. An air conditioner compressor as set forth in claim 1, characterized by: A plurality of mounting feet (11) are arranged on the casing (1), and all the mounting feet (11) are identical in shape and size.

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