CN215409379U - Draw and penetrate structure, compressor unit spare and have its refrigeration plant - Google Patents
Draw and penetrate structure, compressor unit spare and have its refrigeration plant Download PDFInfo
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- CN215409379U CN215409379U CN202120043804.5U CN202120043804U CN215409379U CN 215409379 U CN215409379 U CN 215409379U CN 202120043804 U CN202120043804 U CN 202120043804U CN 215409379 U CN215409379 U CN 215409379U
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Abstract
The application provides an injection structure, a compressor assembly and refrigeration equipment with the compressor assembly, and the refrigeration equipment comprises a primary injector and a secondary injector; the primary ejector comprises a primary ejection port and a primary outlet; the primary ejector port is used for guiding the fluid to be ejected into the primary ejector; the primary outlet is used for guiding the fluid to be ejected to flow out of the primary ejector; the secondary ejector comprises a secondary ejection port and a secondary outlet; the primary outlet is communicated with the secondary injection port; the secondary ejector port is used for guiding the fluid to be ejected into the secondary ejector; and the secondary outlet is used for guiding the fluid to be ejected to flow out of the secondary ejector. According to draw and penetrate structure, compressor unit spare and have its refrigeration plant of this application, draw under the operating mode of low discharge, low pressure differential and penetrate efficiently.
Description
Technical Field
The application belongs to the technical field of refrigeration, concretely relates to draw and penetrate structure, compressor unit spare and have its refrigeration plant.
Background
Chiller or air conditioning systems are common refrigeration units today, which typically include a centrifugal compressor. In the running process of the water chilling unit, because the rotating speed of the compressor is high, the exhaust gas volume is large, and the oil discharge volume is also large, a special oil return path is generally required to be arranged to recover the oil discharged by the compressor.
However, the existing compressor ejector structure is a single ejector structure, and the ejector oil return efficiency is low or the ejector oil return device fails under the working conditions of low flow and low pressure difference, so that the ejector oil return effect cannot be achieved. The unit can appear "running out" long-term operation under this operating mode, and lubricating oil can not get back to the oil tank, and the oil mass reduction can influence the bearing cooling, causes the fever tile etc., influences unit normal operating and reliability.
Therefore, how to provide an injection structure with high injection efficiency under the working conditions of low flow and low pressure difference, a compressor assembly and refrigeration equipment with the compressor assembly become problems which need to be solved by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem that this application will be solved provides one kind and draws structure, compressor unit spare and have its refrigeration plant, draws under the operating mode of low discharge, low pressure differential and penetrates efficiently.
In order to solve the above problem, the present application provides an injection structure, including:
a primary ejector; the primary ejector comprises a primary ejection port and a primary outlet; the primary ejector port is used for guiding the fluid to be ejected into the primary ejector; the primary outlet is used for guiding the fluid to be ejected to flow out of the primary ejector;
and a secondary ejector; the secondary ejector comprises a secondary ejection port and a secondary outlet; the primary outlet is communicated with the secondary injection port; the secondary ejector port is used for guiding the fluid to be ejected into the secondary ejector; and the secondary outlet is used for guiding the fluid to be ejected to flow out of the secondary ejector.
Preferably, the primary ejector comprises a primary main pipe and a primary jet part; the primary injection port is arranged on the primary main pipe; the primary jet part is arranged in the primary main pipe; the first-stage jet part is provided with a first-stage jet orifice; the primary jet part is used for reducing the pressure of jet fluid and discharging the jet fluid into the primary main pipe through the primary jet orifice;
and/or the secondary ejector comprises a secondary main pipe and a secondary jet part; the secondary injection port is arranged on the secondary main pipe; the secondary jet part is arranged in the secondary main pipe; the secondary jet part is provided with a secondary jet orifice; the secondary jet part is provided with a secondary jet orifice; the secondary jet part is used for reducing the pressure of jet fluid and discharging the jet fluid into the secondary main pipe through the secondary jet orifice.
Preferably, the cross-sectional diameter of the primary jet orifice is D1; the cross-sectional diameter of the secondary jet orifice is D2; wherein D1> D2.
Preferably, D1 ═ 0.6D 2.
Preferably, a primary diffusion section is arranged in the primary main pipe; in the flow direction of the fluid, the cross section area of the primary diffusion section is larger and larger;
and/or a secondary diffusion section is arranged in the secondary main pipe; the cross-sectional area of the secondary diffuser section is increasingly larger in the direction of flow of the fluid.
Preferably, the primary diffuser section has a length of L1; the length of the secondary diffusion section is L2; wherein L1> L2.
Preferably, a clamp theta 1 is arranged between the inner surface of the primary diffusion section and the central axis of the primary main pipe on the longitudinal section of the primary main pipe; on the longitudinal section of the secondary main pipe, an included angle theta 2 is formed between the inner surface of the secondary diffusion section and the central axis of the secondary main pipe; wherein θ 1> θ 2.
Preferably, θ 2 is 5 °, and/or θ 1 is 8 ° -10 °; and/or, L1 ═ 2L 2.
According to another aspect of the application, a compressor assembly is provided, which comprises an injection structure, wherein the injection structure is the injection structure.
According to still another aspect of the present application, there is provided a refrigeration apparatus comprising a compressor assembly, the compressor assembly being the compressor assembly described above.
The application provides draw and penetrate structure, compressor unit spare and have its refrigeration plant adopts the ejector of two-stage, adopts the second grade ejector to further draw the injection through the fluid of waiting to draw after the one-level ejector draws for draw penetrate the structure draw and penetrate efficiently under the operating mode of low flow, low pressure differential.
Drawings
Fig. 1 is a schematic structural view of an injection structure according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a primary eductor in accordance with an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a secondary ejector according to an embodiment of the present application.
The reference numerals are represented as:
1. a primary ejector; 11. a primary main pipe; 111. a primary outlet; 112. a primary injection port; 113. a primary diffusion section; 12. a primary fluidic portion; 121. a primary inlet; 122. a first-stage jet orifice; 2. a secondary ejector; 21. a secondary main pipe; 211. a secondary outlet; 212. a secondary injection port; 213. a secondary diffusion section; 22. a secondary fluidic portion; 221. a secondary inlet; 222. and a secondary jet orifice.
Detailed Description
Referring to fig. 1 in combination, according to an embodiment of the present application, an injection structure includes: a primary ejector 1 and a secondary ejector 2; the primary ejector 1 comprises a primary ejector port 112 and a primary outlet 111; the primary injection port 112 is used for guiding the fluid to be injected into the primary injector 1; the primary outlet 111 is used for guiding the fluid to be ejected to flow out of the primary ejector 1; the secondary ejector 2 comprises a secondary ejector port 212 and a secondary outlet port 211; the primary outlet 111 is communicated with the secondary injection port 212; the secondary ejector port 212 is used for guiding the fluid to be ejected into the secondary ejector 2; the secondary outlet 211 is used for guiding the fluid to be ejected to flow out of the secondary ejector 2, the fluid to be ejected after being ejected by the primary ejector 1 is further ejected by the secondary ejector 2, ejection oil return is enhanced, and the ejection efficiency of the ejection structure is high under the working conditions of low flow and low pressure difference. The primary ejector 1 and the secondary ejector 2 are connected in series, and can also be connected in series with a three-stage ejector, a four-stage ejector and other multi-stage ejectors; this application draws and penetrates the structure and draw the ejector structure for serial-type, draw under the operating mode of low discharge, low pressure differential and penetrate efficiently, solved single ejector and returned the problem of inefficiency under low discharge, low pressure differential operating mode. The problems that the running flow of the compressor is low, the injection oil return efficiency is low or the injection oil return device fails can be further solved. A primary outlet pipe is arranged at the primary outlet 111; a secondary outlet pipe is arranged at the secondary outlet 211.
The application also discloses some embodiments, the primary ejector 1 comprises a primary main pipe 11 and a primary jet part 12; the primary injection port 112 is arranged on the primary main pipe 11; the primary jet part 12 is arranged in the primary main pipe 11; the primary jet section 12 has a primary jet opening 122; the primary jet part 12 is used for depressurizing jet fluid and discharging the jet fluid into the primary main pipe 11 through the primary jet opening 122; the primary ejector 1 also comprises a primary inlet pipe; the primary inlet pipe is arranged in the primary injection port 112; the primary injection port 112 is superposed with the central axis of the primary inlet pipe; the primary fluidic portion 12 has a primary inlet 121; the jet fluid enters the primary jet part 12 through the primary inlet 121 to reduce the pressure and increase the speed, then is sprayed out from the primary jet opening 122 and enters the primary main pipe 11; then flows out from the primary outlet 111; then enters the secondary ejector 2 through the secondary ejector port 212; in the process, the jet fluid enters the primary main pipe 11 after being depressurized, so that a low-pressure area is formed in the primary main pipe 11, and the fluid to be injected is further sucked into the primary injector 1 through the primary injection port 112; at this time, the fluid to be ejected flows out from the primary outlet 111 together with the jet fluid.
The application also discloses some embodiments, the secondary ejector 2 comprises a secondary main pipe 21 and a secondary jet part 22; the secondary injection port 212 is arranged on the secondary main pipe 21; the secondary jet part 22 is arranged in the secondary main pipe 21; the secondary fluidic portion 22 has a secondary ejection port 222; the secondary fluidic portion 22 has a secondary ejection port 222; the secondary jet part 22 is used for depressurizing jet fluid and discharging the jet fluid into the secondary main pipe 21 through the secondary jet port 222; the secondary ejector 2 also comprises a secondary inlet pipe; the secondary inlet pipe is arranged in the secondary injection port 212; the secondary injection port 212 is superposed with the central axis of the secondary inlet pipe; the secondary fluidic portion 22 has a secondary inlet 221; the jet fluid enters the secondary jet part 22 through the secondary inlet 221 to reduce the pressure and increase the speed, and then is ejected out of the secondary jet orifice 222 and enters the secondary main pipe 21; and then out of the secondary outlet 211; in the process, the jet fluid enters the secondary main pipe 21 after being depressurized, so that a low-pressure area is formed in the secondary main pipe 21, and the fluid to be ejected is sucked into the secondary ejector 2 through the primary outlet 111; the fluid to be ejected then exits the secondary outlet 211 with the jet fluid. The primary jet part 12 is a primary jet pipe; the secondary fluidic portion 22 is a secondary fluidic tube.
A primary contraction channel is arranged in the primary jet part 12; the primary inlet 121 can allow the high-pressure gaseous refrigerant introduced from the volute to enter the primary jet portion 12, the high-pressure gaseous refrigerant passes through the primary contraction passage, the speed is increased, the pressure is reduced, a negative pressure is formed near the upper portion of the primary inlet pipe, and the lubricating oil is sucked in through the primary injection port 112.
A secondary contraction channel is arranged in the secondary jet part 22; the secondary inlet 221 can allow the high-pressure gaseous refrigerant introduced from the volute to enter the primary jet portion 12, the high-pressure gaseous refrigerant passes through the secondary contraction passage, the speed is increased, the pressure is reduced, a negative pressure is formed near the upper portion of the secondary introduction pipe, and the lubricating oil is sucked in through the secondary injection port 212.
The primary jet part 12 and the secondary jet part 22 have the same structure; the primary contraction channel and the secondary contraction channel are completely identical in structure. Namely, a contraction channel is arranged in the jet pipe; namely the pipe diameter of the jet pipe is a 1; the pipe diameter of the contraction channel is a 2; a1> a 2.
The application serial-type ejector draws the principle:
the high-pressure gaseous refrigerant introduced from the volute enters the primary jet pipe and is sprayed out from a nozzle of the primary jet pipe. According to Bernoulli equation, after the high-pressure gaseous refrigerant passes through a section of contraction channel, the speed is increased, the pressure is reduced, a low-pressure area is formed in the front of a primary jet pipe nozzle, the pressure at the inlet of a primary inlet pipe is high, lubricating oil is sucked by the primary inlet pipe, and the lubricating oil and the gaseous refrigerant enter a primary outlet pipe together to be discharged; and then enters the secondary ejector port 212 of the secondary ejector 2, and finally is discharged from the secondary outlet 211 of the secondary ejector 2 together with the gaseous refrigerant entering from the secondary jet part 22 of the secondary ejector 2. And when the flow H entering the primary jet flow part 12 is less than 15L/H, the suction volume of the lubricating oil can be controlled by adjusting the flow of the secondary jet flow part 22, and the problem that the single-stage ejector is poor in oil injection and return effect or cannot return oil under the condition of low flow is solved.
The present application also discloses embodiments in which the cross-sectional diameter of the primary jet ports 122 is D1; the cross-sectional diameter of the secondary jets 222 is D2; wherein D1> D2. The lubricating oil can be sucked more effectively.
The present application also discloses some embodiments, D1 ═ 0.6D 2. And the main parameters affecting the suction amount of the lubricating oil: the flow H of the high-pressure gaseous refrigerant entering the primary jet pipe and the aperture D at the nozzle of the primary jet pipe. For the general situation of the existing compressor structure, when the flow H entering the jet pipe is less than 15L/H, the suction amount of lubricating oil can be greatly reduced, and even the phenomenon of no oil suction can occur, so that oil return can not be realized. Under the parameter, the lubricating oil can be effectively sucked under the condition that the flow rate of the high-pressure gaseous refrigerant is small.
The application also discloses some embodiments, a primary diffusion section 113 is arranged in the primary main pipe 11; the cross-sectional area of the primary diffuser section 113 is larger and larger in the flow direction of the fluid;
the application also discloses some embodiments, a secondary diffusion section 213 is arranged in the secondary main pipe 21; the cross-sectional area of the secondary diffuser section 213 is larger and larger in the direction of the fluid flow.
The present application also discloses embodiments in which the primary diffuser section 113 has a length L1; the length of the secondary diffuser section 213 is L2; wherein L1> L2.
The application also discloses embodiments, in the longitudinal section of the primary main pipe 11, a clamp theta 1 is arranged between the inner surface of the primary diffusion section 113 and the central axis of the primary main pipe 11; on the longitudinal section of the secondary main pipe 21, an included angle theta 2 is formed between the inner surface of the secondary diffusion section 213 and the central axis of the secondary main pipe 21; wherein θ 1> θ 2. The speed that can be better assurance lubricating oil gets into second grade ejector 2 further guarantees the efficiency of drawing of lubricating oil.
The present application also discloses embodiments where θ 2 is 5 °, and/or θ 1 is 8 ° -10 °; and/or, L1 ═ 2L 2. The lubricating oil can be effectively sucked.
According to the embodiment of the application, a compressor assembly is provided, and the injection structure comprises an injection structure.
According to an embodiment of the application, a refrigeration device is provided, which comprises a compressor assembly, wherein the compressor assembly is the compressor assembly.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (10)
1. The utility model provides an draw and penetrate structure which characterized in that includes:
a primary ejector (1); the primary ejector (1) comprises a primary ejector port (112) and a primary outlet (111); the primary injection port (112) is used for guiding the fluid to be injected into the primary injector (1); the primary outlet (111) is used for guiding the fluid to be ejected to flow out of the primary ejector (1);
and a secondary ejector (2); the secondary ejector (2) comprises a secondary ejector port (212) and a secondary outlet (211); the primary outlet (111) is communicated with the secondary injection port (212); the secondary ejector port (212) is used for guiding the fluid to be ejected into the secondary ejector (2); the secondary outlet (211) is used for guiding the fluid to be ejected to flow out of the secondary ejector (2).
2. The injection structure according to claim 1, wherein the primary injector (1) comprises a primary main pipe (11) and a primary jet part (12); the primary injection port (112) is arranged on the primary main pipe (11); the primary jet part (12) is arranged in the primary main pipe (11); the primary jet section (12) having a primary jet orifice (122); the primary jet part (12) is used for depressurizing jet fluid and discharging the jet fluid into the primary main pipe (11) through the primary jet opening (122);
and/or the secondary ejector (2) comprises a secondary main pipe (21) and a secondary jet part (22); the secondary injection port (212) is arranged on the secondary main pipe (21); the secondary jet part (22) is arranged in the secondary main pipe (21); the secondary fluidic portion (22) having a secondary jet orifice (222); the secondary jet part (22) is used for depressurizing jet fluid and discharging the jet fluid into the secondary main pipe (21) through the secondary jet opening (222).
3. The ejector structure as claimed in claim 2, wherein the primary injection port (122) has a cross-sectional diameter of D1; the cross-sectional diameter of the secondary jet orifice (222) is D2; wherein D1> D2.
4. The injection structure as claimed in claim 3, wherein D1 is 0.6D 2.
5. The injection structure according to claim 2, wherein a primary diffuser section (113) is arranged in the primary main pipe (11); the cross-sectional area of the primary diffusion section (113) is larger and larger in the flow direction of the fluid;
and/or a secondary diffusion section (213) is arranged in the secondary main pipe (21); the cross-sectional area of the secondary diffuser section (213) is increasing in the direction of flow of the fluid.
6. The ejector structure as claimed in claim 5, wherein the primary diffuser section (113) has a length of L1; the secondary diffuser section (213) has a length of L2; wherein L1> L2.
7. The injection structure according to claim 6, wherein, in a longitudinal section of the primary main pipe (11), a clamp θ 1 is formed between the inner surface of the primary diffuser section (113) and the central axis of the primary main pipe (11); on the longitudinal section of the secondary main pipe (21), an included angle theta 2 is formed between the inner surface of the secondary diffusion section (213) and the central axis of the secondary main pipe (21); wherein θ 1> θ 2.
8. The injection structure according to claim 7, wherein θ 2 is 5 ° and/or θ 1 is 8 ° -10 °; and/or, L1 ═ 2L 2.
9. A compressor assembly comprising an injection structure, wherein the injection structure is as defined in any one of claims 1 to 8.
10. A refrigeration apparatus comprising a compressor assembly, wherein said compressor assembly is as recited in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120043804.5U CN215409379U (en) | 2021-01-08 | 2021-01-08 | Draw and penetrate structure, compressor unit spare and have its refrigeration plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120043804.5U CN215409379U (en) | 2021-01-08 | 2021-01-08 | Draw and penetrate structure, compressor unit spare and have its refrigeration plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215409379U true CN215409379U (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120043804.5U Active CN215409379U (en) | 2021-01-08 | 2021-01-08 | Draw and penetrate structure, compressor unit spare and have its refrigeration plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215409379U (en) |
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2021
- 2021-01-08 CN CN202120043804.5U patent/CN215409379U/en active Active
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