CN210486186U - Atomizing nozzle type flow divider and refrigerating system - Google Patents
Atomizing nozzle type flow divider and refrigerating system Download PDFInfo
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- CN210486186U CN210486186U CN201920792507.3U CN201920792507U CN210486186U CN 210486186 U CN210486186 U CN 210486186U CN 201920792507 U CN201920792507 U CN 201920792507U CN 210486186 U CN210486186 U CN 210486186U
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Abstract
The utility model relates to the technical field of refrigeration, especially, relate to an atomizing nozzle formula shunt, a serial communication port, including atomizing stage, flow pattern setting stage and critical reposition of redundant personnel stage, the atomizing stage includes two-phase flow feed pipe and atomizing nozzle, the flow pattern setting stage includes the rectifier, critical reposition of redundant personnel stage includes reposition of redundant personnel, baffle, distribution chamber, sound velocity nozzle, shunt tubes, supplies liquid chamber, annular distribution chamber; the two-phase flow liquid supply pipe is internally provided with an atomizing nozzle, the outlet of the two-phase flow liquid supply pipe is connected with the inlet of the rectifier, and the outlet of the rectifier is connected with the liquid supply cavity. The utility model discloses a flow pattern adjustment that the shunt passes through atomizing nozzle, fluid rectifier with the gas-liquid double-phase refrigerant after the inflation throttle is ideal vaporific flow, and the sound velocity nozzle before each flow path of rethread realizes evenly supplying liquid to each flow path of evaporimeter, has improved the heat transfer performance of evaporimeter, improves the refrigeration ability of evaporimeter.
Description
Technical Field
The utility model relates to the field of refrigeration technology, especially, relate to an atomizing nozzle formula shunt and refrigerating system.
Background
In a refrigeration system evaporator, the problem that the gas-liquid two-phase refrigerant throttled at the upstream is uniformly distributed to a plurality of evaporation branches at the downstream is faced. In the process of flow division, the gas-liquid flow and the dryness of each branch of the downstream are not completely consistent under the influence of the instability of the gas-liquid two-phase flow, namely, the phase separation phenomenon occurs. The occurrence of the phase separation phenomenon can cause uneven shunting of the two-phase refrigerant, so that the heat exchange area of the evaporator cannot be effectively utilized, the valve core of the expansion valve is vibrated, and the liquid impact of the compressor and the like are easily caused. In addition, when the multi-branch evaporator deviates from the theoretical operation condition, the non-uniform heat exchange of each branch leads to the increase of the inconsistency of the resistance of each branch, so that the gas-liquid two-phase fluid is separated in the branch, and the comprehensive heat exchange performance of the evaporator is seriously deteriorated.
Compared with single-phase flow, the gas-liquid two-phase flow has a complex interaction mechanism and is influenced by a plurality of factors. However, the following can be mainly classified according to the influence on the phase separation: the device comprises a gas-liquid two-phase flow splitting principle, an upstream fluid flow state, a downstream branch non-uniform heat exchange, an installation angle and a flow splitter structure. The non-uniform heat exchange of the downstream branch can cause the resistance of each branch to be inconsistent, so that the gas-liquid two-phase flow is unstable and disturbed in the flowing process, a plurality of branches of the system are vibrated periodically or intermittently, the vibrated pressure wave is transmitted upstream through the branches, the uniform flow distribution process of the two-phase flow is influenced, and the phase separation phenomenon is deteriorated.
The existing flow divider has the technical problems of inherent deficiency, uneven flow division and the like in the flow dividing principle, and cannot solve the problems of the gas-liquid two-phase flow dividing principle, the flow state of upstream fluid, uneven heat exchange of downstream branches, installation angle and the influence of the flow divider structure on phase separation, and the distribution performance is reduced or even the distribution capacity is lost. Therefore, a novel flow divider must be designed and developed to overcome the technical defects existing in the prior flow dividing technology, overcome the influence of the upstream flow state and the downstream non-uniform heat exchange on the flow dividing performance, and further improve the working performance of the whole refrigeration system.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not enough of above-mentioned technique, and provide an atomizing nozzle formula shunt and refrigerating system.
The utility model discloses a realize above-mentioned purpose, adopt following technical scheme: an atomizing nozzle type flow divider is characterized by comprising an atomizing stage, a flow pattern setting stage and a critical flow dividing stage, wherein the atomizing stage comprises a two-phase flow liquid supply pipe and an atomizing nozzle, the flow pattern setting stage comprises a rectifier, and the critical flow dividing stage comprises a flow dividing body, a partition plate, a distribution chamber, a sonic nozzle, a flow dividing pipe, a liquid supply cavity and an annular distribution cavity; an atomizing nozzle is arranged in the two-phase flow liquid supply pipe, the outlet of the two-phase flow liquid supply pipe is connected with the inlet of the rectifier, and the outlet of the rectifier is connected with the liquid supply cavity; a central liquid supply cavity and a circumferential annular distribution cavity are arranged in the flow dividing body, the annular distribution cavity is divided into a plurality of distribution chambers through partition plates, each distribution chamber is communicated with a flow dividing pipe, and a sound velocity nozzle which sprays towards the axial direction of the flow dividing pipe is arranged in each distribution chamber; the distributing chamber, the sonic nozzle and the shunt tubes are arranged in a circular array by taking the central line of the annular distributing cavity as the center, and the central lines of the distributing chamber, the sonic nozzle and the shunt tubes are in a straight line.
A refrigeration system is characterized by comprising a compressor, a condenser, an expansion valve, an atomizing nozzle type flow divider and an evaporator; the outlet of the compressor is connected with the inlet of the condenser, the outlet of the condenser is connected with the inlet of the two-phase flow liquid supply pipe of the atomizing nozzle type splitter through the expansion valve, the flow dividing pipes of the atomizing nozzle type splitter are respectively connected with the flow path of the evaporator, and the outlet of the evaporator is connected with the inlet of the compressor.
The utility model has the beneficial effects that 1, the utility model discloses a flow divider passes through atomizing nozzle, the flow pattern adjustment of the gas-liquid two-phase refrigerant after the fluid rectifier will expand the throttle is ideal vaporific flow, the sound velocity nozzle in front of each flow path realizes evenly supplying liquid to each flow path of evaporimeter, each flow path gas-liquid two-phase refrigerant reaches the critical point of local sound velocity at each sound velocity nozzle throat, make each branch road flow not receive the inconsistent resistance that each flow path inhomogeneous heat transfer of low reaches evaporimeter leads to, supply the influence of harmful factors such as liquid difference in height, realize each branch road, wait the quality to supply the liquid, thereby the heat transfer performance of evaporimeter has been improved, the refrigerating capacity of evaporimeter is improved.
2. The utility model discloses a refrigerating system passes through the effect of shunt, when refrigerating system becomes the operating mode operation, as long as the double-phase refrigerant of gas-liquid reaches critical state at the nozzle throat, just can realize supplying liquid, consequently, still has the application range of better reposition of redundant personnel effect and broad under the variable operating mode.
Drawings
FIG. 1 is a front view of the commutating nozzle type flow divider of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 shows a cross-sectional view A-A of FIG. 1;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 1;
fig. 6 is a schematic diagram of a refrigeration system according to the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided in connection with the accompanying drawings. As shown in fig. 1-5, an atomizing nozzle type flow divider includes an atomizing stage 15, a flow pattern setting stage 16, and a critical flow dividing stage 17. The atomization stage 15 comprises a two-phase flow liquid supply pipe 1 and an atomization nozzle 2, the flow pattern setting stage 16 comprises a rectifier 3, and the critical flow division stage comprises a flow division body 4, a partition plate 5, a distribution chamber 6, a sonic nozzle 7, a flow division pipe 8, a liquid supply cavity 9 and an annular distribution cavity 18. A central liquid supply cavity 9 and a circumferential annular distribution cavity 18 are arranged in the flow dividing body 4, the annular distribution cavity 18 is divided into a plurality of distribution chambers 6 through partition plates 5, each distribution chamber 6 is communicated with a flow dividing pipe 8, and a sound velocity nozzle 7 which sprays towards the axial direction of the flow dividing pipe 8 is arranged in each distribution chamber 6; an atomizing nozzle 2 is arranged in the two-phase flow liquid supply pipe 1, the outlet of the two-phase flow liquid supply pipe 1 is connected with the inlet of the fluid rectifier 3, and the outlet of the fluid rectifier 3 is connected with the liquid supply cavity 9; the distribution chamber 6, the sonic nozzle 7 and the shunt tubes 8 are arranged in a circular array by taking the center line of the annular distribution cavity 18 as the center, and the center lines of the distribution chamber 6, the sonic nozzle 7 and the shunt tubes 8 are in a straight line.
The schematic diagram of the refrigeration system of the present invention is shown in fig. 6, and includes a compressor 10, a condenser 11, an expansion valve 12, an atomizing nozzle type flow divider 13 and an evaporator 14, the schematic diagram of the atomizing nozzle type flow divider 14 is shown in fig. 1-5, and includes an atomizing stage 15, a flow pattern setting stage 16 and a critical flow dividing stage 17. The atomization stage 15 comprises a two-phase flow liquid supply pipe 1 and an atomization nozzle 2, the flow pattern setting stage 16 comprises a rectifier 3, and the critical flow division stage comprises a flow division body 4, a partition plate 5, a distribution chamber 6, a sonic nozzle 7, a flow division pipe 8, a liquid supply cavity 9 and an annular distribution cavity 18. A central liquid supply cavity 9 and a circumferential annular distribution cavity 18 are arranged in the flow dividing body 4, the annular distribution cavity 18 is divided into a plurality of distribution chambers 6 through partition plates 5, each distribution chamber 6 is communicated with a flow dividing pipe 8, and a sound velocity nozzle 7 which sprays towards the axial direction of the flow dividing pipe 8 is arranged in each distribution chamber 6; an atomizing nozzle 2 is arranged in the two-phase flow liquid supply pipe 1, the outlet of the two-phase flow liquid supply pipe 1 is connected with the inlet of the fluid rectifier 3, and the outlet of the fluid rectifier 3 is connected with the liquid supply cavity 9; the distribution chamber 6, the sonic nozzle 7 and the shunt tubes 8 are arranged in a circular array by taking the center line of the annular distribution cavity 18 as the center, and the center lines of the distribution chamber 6, the sonic nozzle 7 and the shunt tubes 8 are in a straight line. The outlet of the compressor 10 is connected to the inlet of the condenser 11, the outlet of the condenser 11 is connected to the inlet of the two-phase flow liquid supply pipe 1 of the flow divider through the expansion valve 12, the flow dividing pipes 8 of the flow divider are respectively connected to the flow paths of the evaporator 14, and the outlet of the evaporator 14 is connected to the inlet of the compressor 10. The number of the distribution chambers 6, the sonic nozzles 7 and the shunt tubes 8 is equal to the flow rate of the evaporator.
The high-temperature high-pressure gas refrigerant discharged by the compressor 10 enters the condenser 11 to release heat, is condensed into high-pressure medium-temperature liquid refrigerant, then enters the expansion valve 12 to be throttled and decompressed to become low-temperature low-pressure gas-liquid two-phase refrigerant, the gas-liquid two-phase refrigerant enters the atomizing nozzle type flow divider 13, the two-phase refrigerant is changed into ideal mist flow under the action of the atomizing nozzle 2 and the fluid rectifier 3 in the atomizing nozzle type flow divider 13, the ideal mist flow enters the distribution chambers 6 and the shunt tubes 8 through the sonic nozzles 7, the two-phase refrigerant reaches a critical state at the throats of the sonic nozzles 7, the flow of each branch is not influenced by downstream resistance, the refrigerant is supplied to each flow path of the evaporator 14 through the shunt tubes to be evaporated and refrigerated in the evaporator 14, and then the refrigerant gas returns to the compressor 10 to complete. The ideal mist flow is obtained under the action of the atomizing nozzle and the fluid rectifier and then uniformly enters the sonic nozzle of each distribution chamber, and the throat part reaches a critical state, so that the two-phase refrigerant supplies liquid to each flow path of the evaporator, the heat exchange performance of the evaporator is improved, and the performance of a refrigerating system is improved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (2)
1. An atomizing nozzle type flow divider is characterized by comprising an atomizing stage, a flow pattern setting stage and a critical flow dividing stage, wherein the atomizing stage comprises a two-phase flow liquid supply pipe and an atomizing nozzle, the flow pattern setting stage comprises a rectifier, and the critical flow dividing stage comprises a flow dividing body, a partition plate, a distribution chamber, a sonic nozzle, a flow dividing pipe, a liquid supply cavity and an annular distribution cavity; an atomizing nozzle is arranged in the two-phase flow liquid supply pipe, the outlet of the two-phase flow liquid supply pipe is connected with the inlet of the rectifier, and the outlet of the rectifier is connected with the liquid supply cavity; a central liquid supply cavity and a circumferential annular distribution cavity are arranged in the flow dividing body, the annular distribution cavity is divided into a plurality of distribution chambers through partition plates, each distribution chamber is communicated with a flow dividing pipe, and a sound velocity nozzle which sprays towards the axial direction of the flow dividing pipe is arranged in each distribution chamber; the distributing chamber, the sonic nozzle and the shunt tubes are arranged in a circular array by taking the central line of the annular distributing cavity as the center, and the central lines of the distributing chamber, the sonic nozzle and the shunt tubes are in a straight line.
2. A refrigeration system with the atomizing nozzle-type flow divider of claim 1, comprising a compressor, a condenser, an expansion valve, an atomizing nozzle-type flow divider, and an evaporator; the outlet of the compressor is connected with the inlet of the condenser, the outlet of the condenser is connected with the inlet of the two-phase flow liquid supply pipe of the atomizing nozzle type splitter through the expansion valve, the flow dividing pipes of the atomizing nozzle type splitter are respectively connected with the flow path of the evaporator, and the outlet of the evaporator is connected with the inlet of the compressor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920792507.3U CN210486186U (en) | 2019-05-29 | 2019-05-29 | Atomizing nozzle type flow divider and refrigerating system |
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| CN201920792507.3U CN210486186U (en) | 2019-05-29 | 2019-05-29 | Atomizing nozzle type flow divider and refrigerating system |
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| CN210486186U true CN210486186U (en) | 2020-05-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068182A (en) * | 2019-05-29 | 2019-07-30 | 天津商业大学 | Atomizer formula current divider and refrigeration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068182A (en) * | 2019-05-29 | 2019-07-30 | 天津商业大学 | Atomizer formula current divider and refrigeration system |
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