Multi-unit oil-free scroll compressor with independent air inlet and outlet

Abstract

The utility model discloses a multi-unit oil-free scroll compressor with independent air inlet and outlet, which comprises compressors and a box body, a shell of each compressor is provided with a hot air outlet, the two compressors are divided into a compressor I and a compressor III, the compressor I and the compressor III are symmetrically arranged up and down and accommodated in the box body, the top side of the box body is provided with a left air outlet, and the bottom side of the box body is provided with a right air outlet. The left air outlet is communicated with a left main channel, the left main channel is located on the left side in the box body, a left partition plate is arranged in the left main channel and divides the left main channel into a left upper exhaust channel and a left lower exhaust channel which are mutually independent, the left lower exhaust channel is connected with a hot air outlet of the compressor I, and the left upper exhaust channel is connected with a hot air outlet of the compressor III. According to the utility model, cold air of each compressor enters the cooling host independently, the cold air can be pumped forcibly, hot air discharged after the host of each compressor is cooled is discharged out of the box independently, the compressors can be closed or opened at will, and mutual airflow does not influence each other from the channel of the host and flows back.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-free scroll compressors, and particularly relates to a multi-unit scroll compressor with independent air inlet and outlet. Background Art

[0002] The main body of a scroll compressor mainly consists of a moving scroll disk, a stationary scroll disk, a crankshaft, a centrifugal air wheel, etc. The crankshaft is driven by an electric motor to rotate. The crankshaft drives the moving scroll disk to rotate. The moving scroll disk and the stationary scroll disk are engaged to form a compression chamber. During the operation of the compressor, the moving scroll disk and the stationary scroll disk will generate heat due to friction and gas compression. In order to maintain their normal working temperature, a centrifugal air wheel is used to generate a cooling air flow as it rotates with the crankshaft. The cooling air flow enters the compressor interior through the main body channel, flows through the moving scroll disk and the stationary scroll disk, absorbs heat and then is discharged from the hot air outlet, realizing the cooling of the moving scroll disk and the stationary scroll disk. In addition, in order to achieve a large displacement, the usual practice is to stack multiple main bodies. However, the air outlet channels of the cooling air after the existing main bodies absorb heat are shared channels and are interconnected. When some main bodies are turned on and some other main bodies are turned off, there is a phenomenon that the reverse-flow hot air returns to the main body. Under the air extraction action of the post-cooling fan and the centrifugal air wheel, a negative pressure is formed inside the main body, and the hot air of the turned-on main body flows back more obviously from the main body channel of the turned-off main body into the main body. The view of the reverse flow of hot air is as Figure 1 shown, and most of the space between the main body and the channel is sealed with sound-absorbing cotton, resulting in poor sealing performance, poor elastic compensation and easy air leakage. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the above-mentioned shortcomings of the prior art, and provide a multi-unit scroll compressor with independent air inlet and outlet, in which the cold air of each compressor independently enters to cool the main body, the cold air can be forcibly drawn, the hot air discharged after cooling the main body of each compressor is independently discharged outside the box, any compressor can be turned off or on, and the air flows of each other will not affect each other and reverse-flow from the main body channel.

[0004] The utility model is realized by the following technical solutions: A multi-unit oil-free scroll compressor with independent air inlet and outlet, including a compressor and a box body. The housing of the compressor has a hot air outlet for discharging the heat generated by the scroll disk assembly. There are two compressors, which are divided into Compressor I and Compressor III. Compressor I and Compressor III are arranged in an upper and lower layer and are accommodated in the box body. A left air outlet is provided on the top side of the box body. The left air outlet is communicated with a left main channel. The left main channel is located on the left side inside the box body. A left partition is provided in the left main channel, which divides it into an independent upper left exhaust channel and a lower left exhaust channel. The lower left exhaust channel is connected to the hot air outlet of Compressor I, and the upper left exhaust channel is connected to the hot air outlet of Compressor III.

[0005] Further: A compressor II and a compressor IV are also accommodated in the box body. The compressor II and the compressor IV are arranged in an upper and lower layer, and the compressor I and the compressor II are centrosymmetric, and the compressor III and the compressor IV are centrosymmetric. A right air outlet is provided on the top side of the box body, and the right air outlet communicates with a right main channel. The right main channel is located on the right side inside the box body. A right partition is provided in the right main channel, which divides it into an independent upper right exhaust channel and a lower right exhaust channel. The lower right exhaust channel is connected to the hot air outlet of the compressor II, and the upper right exhaust channel is connected to the hot air outlet of the compressor IV.

[0006] Further: The left main channel and the right main channel respectively have heat insulation layers.

[0007] Further: The connection between the lower left exhaust channel and the hot air outlet of the compressor I, the connection between the upper left exhaust channel and the hot air outlet of the compressor III, the connection between the lower right exhaust channel and the hot air outlet of the compressor II, and the connection between the upper right exhaust channel and the hot air outlet of the compressor IV are all respectively connected through flexible sealing strips.

[0008] Further: The lower left exhaust channel, the upper left exhaust channel, the lower right exhaust channel, and the upper right exhaust channel respectively have corners, and the corners of the lower left exhaust channel are staggered from the positions of its air outlet ends, the corners of the upper left exhaust channel are staggered from the positions of its air outlet ends, the corners of the lower right exhaust channel are staggered from the positions of its air outlet ends, and the corners of the upper right exhaust channel are staggered from the positions of its air outlet ends.

[0009] Further: The flexible sealing strip is a vehicle sealing strip.

[0010] Further: An upper left air inlet and a lower left air inlet are provided on the left side wall of the box body. The lower left air inlet corresponds to the main cooling fan of the compressor I, and the upper left air inlet corresponds to the main cooling fan of the compressor III. An upper right air inlet and a lower right air inlet are provided on the right side wall of the box body. The lower right air inlet corresponds to the main cooling fan of the compressor II, and the upper right air inlet corresponds to the main cooling fan of the compressor IV.

[0011] Further: A rear cooling air outlet is provided on the top wall of the box body, and the rear cooling air outlet corresponds to the rear cooling fan inside the box body.

[0012] Further: Two air extraction ports are provided on the top wall of the box body, and two air extraction fans are provided inside the box body, and the air extraction ports and the air extraction fans correspond one by one.

[0013] Further: The left air outlet and the right air outlet are respectively located beside both ends of the rear cooling air outlet, and the two air extraction openings are located beside both sides of the rear cooling air outlet.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. By independently connecting the exhaust channels to the hot air outlets of the casings of each compressor, the hot air of each main unit will not affect each other, and the hot air of the starting main unit will not flow back into the whole machine from the main unit channel of the stopped main unit. Therefore, it is beneficial to reduce the ambient temperature inside the whole machine, ensure that the suction temperature of each main unit, the working environment temperature of the main unit and the motor are low, and the suction temperature of the rear cooling fan is low, with better cooling effect and longer service life of each component.

[0016] 2. The upper left exhaust channel, the lower left exhaust channel, the upper right exhaust channel and the lower right exhaust channel respectively have corners, and the corners of each exhaust channel are staggered with the positions of their air outlet ends. By staggering the corners and the air outlet ends, the directly radiated noise can be intercepted, which is beneficial to reducing the noise of the main unit and the air flow, and reducing the noise of the whole machine.

[0017] 3. The left main channel and the right main channel respectively have heat insulation layers, which ensure that the heat in the channels will not dissipate into the whole machine, reduce the working environment temperature of each component inside the whole machine, have good cooling effect and long service life of the components.

[0018] 4. The upper left exhaust channel, the lower left exhaust channel, the upper right exhaust channel and the lower right exhaust channel are respectively connected to the hot air outlets through flexible sealing strips, so that the main unit of the compressor is flexibly connected to the channel, with good sealing effect, preventing the hot air discharged from the main unit from leaking into the whole machine, making the hot air discharged from the hot air outlet more effectively enter the upper left exhaust channel, the lower left exhaust channel, the upper right exhaust channel and the lower right exhaust channel, and ensuring that there is no hard connection for the main unit, making the main unit easily shock-absorbed, with lower vibration of the main unit and higher reliability.

[0019] 5. The left upper air inlet and the left lower air inlet are arranged on the left side wall of the box body. The left lower air inlet corresponds to the main unit cooling fan of Compressor I, and the left upper air inlet corresponds to the main unit cooling fan of Compressor III. The right upper air inlet and the right lower air inlet are arranged on the right side wall of the box body. The right lower air inlet corresponds to the main unit cooling fan of Compressor II, and the right upper air inlet corresponds to the main unit cooling fan of Compressor IV. The main unit cooling fans of each compressor can independently intake cooling air, with better cooling effect, which can make the exhaust temperature of the main unit lower, thereby improving the service life of the sealing strip, bearing, grease, etc. of the main unit, with longer service time and higher reliability. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the existing hot air reverse flow path;

[0021] Figure 2 Top view of the present utility model;

[0022] Figure 3 Side view of the present utility model;

[0023] Figure 4 is Figure 2 Cross-sectional view taken along line A-A;

[0024] Figure 5 is Figure 4 Enlarged view at position B.

[0025] Explanation of reference numerals: 1 - box body, 2 - compressor I, 3 - compressor III, 4 - hot air outlet, 5 - left air outlet, 6 - left main channel, 7 - left partition, 8 - upper left exhaust channel, 9 - lower left exhaust channel, 10 - compressor II, 11 - compressor IV, 12 - right air outlet, 13 - heat insulation layer, 14 - flexible sealing strip, 15 - corner, 16 - upper left air inlet, 17 - lower left air inlet, 18 - main engine cooling fan, 19 - rear cooling air outlet, 20 - rear cooling fan, 21 - suction port, 22 - suction fan, 23 - housing, 24 - main engine channel. Detailed implementation manners

[0026] Figures 2 to 5 Schematic structural diagram of an embodiment of a multi-unit scroll compressor with independent air inlet and outlet provided by the present utility model, including a compressor and a box body 1. The housing 23 of the compressor has a hot air outlet 4 for discharging the heat generated by the scroll disk assembly. There are two compressors, namely compressor I 2 and compressor III 3. Compressor I 2 and compressor III 3 are arranged in upper and lower layers and are accommodated in the box body 1. The top side of the box body 1 is provided with a left air outlet 5, and the left air outlet 5 is communicated with the left main channel 6. The left main channel 6 is located on the left side inside the box body 1. A left partition 7 is provided in the left main channel 6, which divides it into independent upper left exhaust channel 8 and lower left exhaust channel 9. The lower left exhaust channel 9 is connected to the hot air outlet 4 of compressor I 2, and the upper left exhaust channel 8 is connected to the hot air outlet 4 of compressor III 3.

[0027] The box body 1 also accommodates compressor II 10 and compressor IV 11. Compressor II 10 and compressor IV 11 are arranged in upper and lower layers, and compressor I 2 and compressor II 10 are centrosymmetric, and compressor III 3 and compressor IV 11 are centrosymmetric. The top side of the box body 1 is provided with a right air outlet 12, and the right air outlet 12 is communicated with the right main channel. The right main channel is located on the right side inside the box body 1. A right partition is provided in the right main channel, which divides it into independent upper right exhaust channel and lower right exhaust channel. The lower right exhaust channel is connected to the hot air outlet 4 of compressor II 10, and the upper right exhaust channel is connected to the hot air outlet 4 of compressor IV 11.

[0028] In this embodiment, the number of compressors is not limited to two or four, and the number of compressors can be set to five, six, etc.

[0029] The left main channel 6 is separated into an independent upper left exhaust channel 8 and a lower left exhaust channel 9 by the left partition 7. The hot air outlet 4 of the compressor I 2 is connected to the lower left exhaust channel 9, and the hot air outlet 4 of the compressor III 3 is connected to the upper left exhaust channel 8. The right main channel is separated into an independent upper right exhaust channel and a lower right exhaust channel by the right partition. The lower right exhaust channel is connected to the hot air outlet 4 of the compressor II 10, and the upper right exhaust channel is connected to the hot air outlet of the compressor IV 11, so that there is an independent air inlet and outlet duct in the whole machine box 1. The compressors I 2, II 10, III 3, and IV 11 have independent exhaust channels. The hot air discharged from the hot air outlet 4 of the compressor I 2 is discharged out of the box 1 from the left air outlet 5 through the lower left exhaust channel 9. The hot air discharged from the hot air outlet 4 of the compressor II 10 is discharged out of the box 1 from the right air outlet 12 through the lower right exhaust channel. The hot air discharged from the hot air outlet 4 of the compressor III 3 is discharged out of the box 1 through the upper left exhaust channel 8. The hot air discharged from the hot air outlet 4 of the compressor IV 11 is discharged out of the box 1 from the right air outlet 12 through the upper right exhaust channel. When any one of the two compressors I 2 and III 3 is turned on and the other is turned off, when the hot air outlet 4 of the turned-on compressor discharges hot air, the hot air will not flow back from the main channel 24 of the turned-off compressor into its main machine, so that the hot air discharged by the compressors I 2 and III 3 will not affect each other. When any one of the two compressors II 10 and IV 11 is turned on and the other is turned off, the principle is the same as that of the compressors I 2 and III 3, so as to prevent the hot air of the turned-on compressor from flowing back from the main channel 24 of the turned-off compressor into the whole machine, which is beneficial to reducing the ambient temperature in the whole machine and ensuring that the suction temperature of each compressor 1 is low, and the working environment temperature of the main machine and the motor is low.

[0030] The left main channel 6 and the right main channel are respectively provided with a heat insulation layer 13.

[0031] By providing the heat insulation layer 13 in the left main channel 6 and the right main channel, it is ensured that the heat in the left main channel 6 and the right main channel will not be dissipated into the box 1, reducing the working environment temperature of each part in the whole machine box 1, having good cooling effect and prolonging the service life of the parts.

[0032] The connections between the lower left exhaust channel 9 and the hot air outlet 4 of the compressor I 2, between the upper left exhaust channel 8 and the hot air outlet 4 of the compressor III 3, between the lower right exhaust channel and the hot air outlet 4 of the compressor II 10, and between the upper right exhaust channel and the hot air outlet 4 of the compressor IV 11 are respectively connected through flexible sealing strips 14.

[0033] The flexible sealing strip 14 is a vehicle sealing strip.

[0034] Using a flexible connection with a vehicle sealing strip can improve the sealing performance of the connection between the lower left exhaust passage 9, the upper left exhaust passage 8, the lower right exhaust passage or the upper right exhaust passage and the hot air outlet 4. The sealing effect is good, preventing the hot air discharged from the compressor main unit from leaking into the box body 1, enabling the hot air to be more effectively transferred to the lower left exhaust passage 9, the upper left exhaust passage 8, the lower right exhaust passage or the upper right exhaust passage. Additionally, it can make the casing 23 of the compressor have no hard connection, enabling the compressor to easily reduce vibration, resulting in lower vibration of the compressor main unit and higher reliability.

[0035] The lower left exhaust passage 9, the upper left exhaust passage 8, the lower right exhaust passage and the upper right exhaust passage respectively have corners 15, and the corner 15 of the lower left exhaust passage 9 is staggered from the position of its air outlet end, the corner 15 of the upper left exhaust passage 8 is staggered from the position of its air outlet end, the corner 15 of the lower right exhaust passage is staggered from the position of its air outlet end, and the corner 15 of the upper right exhaust passage is staggered from the position of its air outlet end.

[0036] By setting corners 15 in the upper left exhaust passage 8, the lower left exhaust passage 9, the upper right exhaust passage and the lower right exhaust passage, and staggering the positions of the corners from their air outlet ends, using the staggered structure of the corner 15 and its air outlet end to intercept directly radiated noise is beneficial to reducing the noise of the compressor main unit and the air flow noise, making the noise of the whole machine lower.

[0037] The left side wall of the box body 1 is provided with an upper left air inlet 16 and a lower left air inlet 17. The lower left air inlet 17 corresponds to the main unit cooling fan 18 of the compressor I 2, and the upper left air inlet 16 corresponds to the main unit cooling fan 18 of the compressor III 3. The right side wall of the box body 1 is provided with an upper right air inlet and a lower right air inlet. The lower right air inlet corresponds to the main unit cooling fan 18 of the compressor II 10, and the upper right air inlet corresponds to the main unit cooling fan 18 of the compressor IV 11.

[0038] The main unit cooling fan 18 of the compressor I independently takes in cooling air through the lower left air inlet 17, the main unit cooling fan 18 of the compressor III 3 independently takes in cooling air through the upper left air inlet 16, the main unit cooling fan 18 of the compressor II 10 independently takes in cooling air through the lower right air inlet, and the main unit cooling fan 18 of the compressor IV 11 independently takes in cooling air through the upper right air inlet. This can enable the main unit cooling fans of each compressor to independently take in cooling air, with a better cooling effect, which can make the exhaust temperature of the compressor main unit lower, thereby enhancing the service life of the main unit's sealing strip, bearings, grease, etc., having a longer service time and higher reliability.

[0039] The top wall of the box body 1 is provided with a rear cooling air outlet 19, and the rear cooling air outlet 19 corresponds to the rear cooling fan 20 inside the box body 1.

[0040] The top wall of the box body 1 is provided with two air extraction openings 21, and two air extraction fans 22 are arranged inside the box body 1. The air extraction openings 21 and the air extraction fans 22 correspond to each other one by one.

[0041] By arranging the air extraction fan 22 to extract air from the inside of the box body 1, the temperature inside the box body 1 can be reduced. Through the after-cooling fan 20, the temperature of the box body 1 can be further reduced.

[0042] The left air outlet 5 and the right air outlet 12 are respectively located beside both ends of the after-cooling air outlet 19, and the two air extraction openings 21 are located beside both sides of the after-cooling air outlet 19.

[0043] The layout positions of each air outlet are reasonably distributed.

[0044] The above detailed description is a specific description of the feasible embodiments of the present invention. This embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification without departing from the present invention shall be included in the patent scope of this case.

Claims

1. A multi-unit oil-free scroll compressor with independent air inlet and outlet, comprising a compressor and a casing, wherein the casing of the compressor has a hot air outlet for discharging heat generated by a scroll assembly, characterized in that: The compressors are provided with two, namely compressor I and compressor III. The compressors I and III are arranged in upper and lower layers and contained in the casing. A left air outlet is provided on the top side of the casing. The left air outlet is connected to a left main channel. The left main channel is located on the left side of the casing. A left partition is provided in the left main channel to separate it into an upper left exhaust channel and a lower left exhaust channel which are independent of each other. The lower left exhaust channel is connected to the hot air outlet of the compressor I, and the upper left exhaust channel is connected to the hot air outlet of the compressor III.

2. According to claim 1, a multi-unit oil-free scroll compressor with independent air inlet and outlet, characterized in that: The box body also accommodates compressor II and compressor IV, which are arranged in upper and lower layers, and compressor I and compressor II are centrally symmetrical, and compressor III and compressor IV are centrally symmetrical. A right air outlet is provided on the top side of the box body, and the right air outlet is connected to the right main channel. The right main channel is located on the right side of the box body. A right partition is provided in the right main channel to separate it into a mutually independent upper right exhaust channel and a lower right exhaust channel. The lower right exhaust channel is connected to the hot air outlet of compressor II, and the upper right exhaust channel is connected to the hot air outlet of compressor IV.

3. According to claim 2, a multi-unit oil-free scroll compressor with independent air inlet and outlet, characterized in that: The left main channel and the right main channel each have a heat insulation layer.

4. The oil-free scroll compressor with multiple units and independent air inlet and outlet according to claim 2, characterized in that: The connection between the lower left exhaust channel and the hot air outlet of the compressor I, the connection between the upper left exhaust channel and the hot air outlet of the compressor III, the connection between the lower right exhaust channel and the hot air outlet of the compressor II, and the connection between the upper right exhaust channel and the hot air outlet of the compressor IV are respectively connected by flexible sealing strips.

5. The oil-free scroll compressor with multiple units and independent air inlet and outlet according to claim 2, characterized in that: The lower left exhaust channel, the upper left exhaust channel, the lower right exhaust channel and the upper right exhaust channel respectively have corners, and the corner of the lower left exhaust channel is staggered with the position of its air outlet end, the corner of the upper left exhaust channel is staggered with the position of its air outlet end, the corner of the lower right exhaust channel is staggered with the position of its air outlet end, and the corner of the upper right exhaust channel is staggered with the position of its air outlet end.

6. The oil-free scroll compressor with multiple units and independent air inlet and outlet according to claim 4, characterized in that: The flexible sealing strip is a sealing strip for vehicles.

7. The oil-free scroll compressor with multiple units and independent air inlet and outlet according to claim 5, characterized in that: The left side wall of the box body is provided with an upper left air inlet and a lower left air inlet, the lower left air inlet corresponds to the main engine cooling fan of the compressor I, and the upper left air inlet corresponds to the main engine cooling fan of the compressor III. The right side wall of the box body is provided with an upper right air inlet and a lower right air inlet, the lower right air inlet corresponds to the main engine cooling fan of the compressor II, and the upper right air inlet corresponds to the main engine cooling fan of the compressor IV.

8. The oil-free scroll compressor with multiple units and independent air inlet and outlet according to claim 7, characterized in that: The top wall of the box body is provided with a rear cooling air outlet, and the rear cooling air outlet corresponds to the rear cooling fan in the box body.

9. The oil-free scroll compressor with multiple units and independent air inlet and outlet according to claim 8, characterized in that: The top wall of the box body is provided with two air exhaust ports, and the box body is provided with two air exhaust fans, and the air exhaust ports correspond to the air exhaust fans one by one.

10. The oil-free scroll compressor with multiple units and independent air inlet and outlet according to claim 9, characterized in that: The left air outlet and the right air outlet are respectively located beside the two ends of the rear cooling air outlet, and the two air intake ports are located beside the two sides of the rear cooling air outlet.

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