CN210089201U - Phase change is shunt and year cold system for secondary refrigerant - Google Patents
Phase change is shunt and year cold system for secondary refrigerant Download PDFInfo
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- CN210089201U CN210089201U CN201920792510.5U CN201920792510U CN210089201U CN 210089201 U CN210089201 U CN 210089201U CN 201920792510 U CN201920792510 U CN 201920792510U CN 210089201 U CN210089201 U CN 210089201U
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Abstract
The utility model relates to the technical field of refrigeration, in particular to a phase-change secondary refrigerant flow divider, which comprises a two-phase flow liquid supply pipe, a sonic nozzle, a flow dividing pipe, an annular distribution cavity, a liquid supply cavity, a clapboard and a distribution chamber; the annular distribution cavity is divided into a plurality of distribution chambers by partition plates; the outlet of the two-phase flow liquid supply pipe is connected with the liquid supply cavity, the liquid supply cavity is connected with the inlet of the sonic nozzle, the outlet of the sonic nozzle is connected with the distribution chamber, and the distribution chamber is communicated with the shunt pipe; 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. The utility model discloses a phase transition shunt for the secondary refrigerant makes phase transition shunt for the secondary refrigerant still have the application range of better reposition of redundant personnel effect and broad under the variable working condition.
Description
Technical Field
The utility model relates to the field of refrigeration technology, especially, relate to a phase transition is shunt and cold system of carrying for secondary refrigerant.
Background
The phase-change secondary refrigerant such as CO2 is single-phase liquid when entering the downstream multi-branch evaporator through the flow divider under the pushing of the working medium pump, so that the phase separation phenomenon does not exist, but the problem of uneven flow distribution of the secondary refrigerant possibly exists. In the multi-branch evaporator, pressure waves generated by pressure wave oscillation caused by non-uniform heat exchange of all branches of the evaporator are transmitted upstream, so that the shunting performance of the phase-change secondary refrigerant flow divider is deteriorated, and the performance of the phase-change secondary refrigerant heat exchanger is seriously influenced.
The existing phase-change cold-carrying agent flow divider has the technical problems of inherent insufficiency, uneven flow division and the like in the flow dividing principle, and can not solve the influence of pressure wave oscillation caused by the uneven heat exchange of the downstream branch on the phase separation. Therefore, a novel phase-change flow divider for the secondary refrigerant must be designed and developed to solve the technical defects existing in the prior flow dividing technology, overcome the influence of pressure wave oscillation caused by down-flow non-uniform heat exchange on the flow dividing performance, and further improve the working performance of the whole secondary cooling system.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the technical defects, and provides a phase-change flow divider for coolant and a cooling system.
The utility model discloses a realize above-mentioned purpose, adopt following technical scheme: a flow divider for phase-change secondary refrigerant is characterized by comprising a two-phase flow liquid supply pipe, a sonic nozzle, a flow dividing pipe, an annular distribution cavity, a liquid supply cavity, a partition plate and a distribution chamber; the annular distribution cavity is divided into a plurality of distribution chambers by partition plates; the outlet of the two-phase flow liquid supply pipe is connected with the liquid supply cavity, the liquid supply cavity is connected with the inlet of the sonic nozzle, the outlet of the sonic nozzle is connected with the distribution chamber, and the distribution chamber is communicated with the shunt pipe; 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 cold carrying system is characterized by comprising a compressor, a condenser, a refrigerant liquid storage device, a bypass valve, a condensation evaporator, a phase-change secondary refrigerant liquid storage device, a working medium pump, an electromagnetic valve, a control valve, a phase-change secondary refrigerant flow divider and a pressure control valve; 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 liquid storage device, the outlet of the liquid storage device is connected with the inlet of the bypass valve, the outlet of the bypass valve is connected with the inlet of the refrigeration part of the condensation evaporator, and the outlet of the refrigeration part of the condensation evaporator is connected with the inlet of the compressor;
the outlet of the cold-carrying part of the condensation evaporator is connected with the first inlet of the phase-change secondary refrigerant liquid storage device, the first outlet of the phase-change secondary refrigerant liquid storage device is connected with the inlet of the working medium pump, the outlet of the working medium pump is respectively connected with the electromagnetic valve and the pressure control valve, the electromagnetic valve is connected with the control valve, the control valve is connected with the phase-change secondary refrigerant flow divider, the phase-change secondary refrigerant flow divider is connected with the inlet of the dry evaporator, and the outlet of the dry evaporator is connected with the second inlet of the phase-change secondary refrigerant liquid storage device; the pressure control valve is connected with a second inlet of the phase-change secondary refrigerant reservoir, and a second outlet of the phase-change secondary refrigerant reservoir is connected with an inlet of the cold-carrying part of the condensing evaporator.
The utility model has the beneficial effects that 1, the utility model discloses a phase transition is shunt for secondary refrigerant realizes through the sonic nozzle that the gas-liquid double-phase refrigerant reaches local acoustic velocity at sonic nozzle throat, overcomes because the pressure wave that each branch road non-uniform heat transfer of evaporimeter arouses vibrates to and the influence of pressure wave upstream transmission to phase transition is shunt shunting characteristic for the secondary refrigerant, makes phase transition is shunt for the secondary refrigerant still have better reposition of redundant personnel effect and the application range of broad under the variable working condition.
2. The utility model discloses a carry cold system carries cold effect of using shunt through the phase transition, when carrying cold system variable operating mode, as long as the double-phase refrigerant of gas-liquid reaches local sound velocity at sonic nozzle throat, just can overcome the influence of the pressure wave oscillation that each evaporation branch road non-uniform heat transfer of downflow leads to the reposition of redundant personnel, realizes each evaporation branch road isoplow that flows down and supplies liquid, consequently, carries cold system still to have higher operating efficiency under the variable operating mode.
Drawings
FIG. 1 is a front view of the flow divider for coolant according to 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. 2;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 3;
fig. 6 is a schematic view of the cooling system of 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 to 5, a flow divider for phase-change coolant comprises a two-phase flow liquid supply pipe 1, a sonic nozzle 2, a flow dividing pipe 3, an annular distribution chamber 4, a liquid supply chamber 5, a partition plate 6 and a distribution chamber 7. The annular distribution chamber 4 is divided into a plurality of distribution chambers 7 by partition plates 6; the outlet of the two-phase flow liquid supply pipe 1 is connected with the liquid supply cavity 5, the liquid supply cavity 5 is connected with the inlet of the sonic nozzle 2, the outlet of the sonic nozzle 2 is connected with the distribution chamber 7, and the distribution chamber 7 is communicated with a shunt pipe 3; the distribution chamber 7, the sonic nozzle 2 and the shunt tubes 3 are arranged in a circular array by taking the central line of the annular distribution cavity 4 as the center, and the central lines of the distribution chamber 7, the sonic nozzle 2 and the shunt tubes 3 are in a straight line.
The schematic diagram of the cold carrying system of the utility model is shown in fig. 6, including compressor 8, condenser 9, refrigerant reservoir 10, bypass valve 11 and condensation evaporator 12, phase change secondary refrigerant reservoir 13, working medium pump 14, solenoid valve 15, control valve 16, phase change secondary refrigerant shunt 17, dry evaporator 18 and pressure-controlled valve 19. The phase change secondary refrigerant flow divider 17 comprises a two-phase flow liquid supply pipe, a sonic nozzle, a flow dividing pipe, an annular distribution cavity, a liquid supply cavity, a partition plate and a distribution chamber. The annular distribution chamber 4 is divided into a plurality of distribution chambers 7 by partition plates 6; the outlet of the two-phase flow liquid supply pipe 1 is connected with the liquid supply cavity 5, the liquid supply cavity 5 is connected with the inlet of the sonic nozzle 2, the outlet of the sonic nozzle 2 is connected with the distribution chamber 7, and the distribution chamber 7 is communicated with a shunt pipe 3; the distribution chamber 7, the sonic nozzle 2 and the shunt tubes 3 are arranged in a circular array by taking the central line of the annular distribution cavity 4 as the center, and the central lines of the distribution chamber 7, the sonic nozzle 2 and the shunt tubes 3 are in a straight line. The outlet of the compressor 8 is connected with the inlet of the condenser 9, the outlet of the condenser 9 is connected with the inlet of the liquid storage device 10, the outlet of the liquid storage device 10 is connected with the inlet of the bypass valve 11, the outlet of the bypass valve 11 is connected with the refrigerating part inlet 12a of the condensing evaporator, and the refrigerating part outlet 12b of the condensing evaporator is connected with the compressor 8. The cold-carrying part outlet 12d of the condensing evaporator is connected with a first inlet 13a of the phase-change secondary refrigerant liquid storage device, a first outlet 13b of the phase-change secondary refrigerant liquid storage device is connected with an inlet 14a of the working medium pump, an outlet 14b of the working medium pump is connected with the electromagnetic valve 15, the electromagnetic valve 15 is connected with the control valve 16, the control valve 16 is connected with a flow divider 17 for the phase-change secondary refrigerant, the flow divider 17 for the phase-change secondary refrigerant is connected with an inlet 18a of the dry evaporator 18, and an outlet 18b of the dry evaporator 18 is connected with a second inlet 13c of the phase-change secondary refrigerant liquid storage device; the outlet 14c of the working medium pump is connected with the pressure control valve 19, the pressure control valve 19 is connected with the ground inlet 13c of the phase-change secondary refrigerant reservoir, and the second outlet 13d of the phase-change secondary refrigerant reservoir is connected with the inlet 12c of the cold-carrying part of the condensation evaporator. The throat refrigerant of the sonic nozzle reaches the critical state local sonic velocity, overcomes the influence of pressure wave oscillation caused by non-uniform heat exchange of each downstream evaporation branch on the shunting effect, and realizes equal-flow liquid supply to each downstream evaporation branch, so that the cold-carrying system still has higher operating efficiency under variable working conditions.
Under the push of the working medium pump 14, after the liquid-state secondary refrigerant enters the phase-change secondary refrigerant flow divider 17, the local sound velocity is reached at the throat part of the sonic nozzle 2, so that the flow of each branch is not influenced by pressure wave oscillation caused by non-uniform heat exchange of each branch of the downstream evaporator and generated pressure wave transmitted upstream to the flow dividing performance of the phase-change secondary refrigerant flow divider. The refrigerant after passing through the nozzle is subjected to pressure reduction and speed acceleration, so that the disturbance of the refrigerant can be enhanced, and the convection heat exchange in the downstream heat exchange pipe is enhanced and 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. A flow divider for phase-change secondary refrigerant is characterized by comprising a two-phase flow liquid supply pipe, a sonic nozzle, a flow dividing pipe, an annular distribution cavity, a liquid supply cavity, a partition plate and a distribution chamber; the annular distribution cavity is divided into a plurality of distribution chambers by partition plates; the outlet of the two-phase flow liquid supply pipe is connected with the liquid supply cavity, the liquid supply cavity is connected with the inlet of the sonic nozzle, the outlet of the sonic nozzle is connected with the distribution chamber, and the distribution chamber is communicated with the shunt pipe; 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 cold-carrying system using the phase-change coolant flow divider of claim 1, comprising a compressor, a condenser, a coolant reservoir, a bypass valve, a condensing evaporator, a phase-change coolant reservoir, a working medium pump, an electromagnetic valve, a control valve, a phase-change coolant flow divider, and a pressure control valve; 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 liquid storage device, the outlet of the liquid storage device is connected with the inlet of the bypass valve, the outlet of the bypass valve is connected with the inlet of the refrigeration part of the condensation evaporator, and the outlet of the refrigeration part of the condensation evaporator is connected with the inlet of the compressor;
the outlet of the cold-carrying part of the condensation evaporator is connected with the first inlet of the phase-change secondary refrigerant liquid storage device, the first outlet of the phase-change secondary refrigerant liquid storage device is connected with the inlet of the working medium pump, the outlet of the working medium pump is respectively connected with the electromagnetic valve and the pressure control valve, the electromagnetic valve is connected with the control valve, the control valve is connected with the phase-change secondary refrigerant flow divider, the phase-change secondary refrigerant flow divider is connected with the inlet of the dry evaporator, and the outlet of the dry evaporator is connected with the second inlet of the phase-change secondary refrigerant liquid storage device; the pressure control valve is connected with a second inlet of the phase-change secondary refrigerant reservoir, and a second outlet of the phase-change secondary refrigerant reservoir is connected with an inlet of the cold-carrying part of the condensing evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920792510.5U CN210089201U (en) | 2019-05-29 | 2019-05-29 | Phase change is shunt and year cold system for secondary refrigerant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920792510.5U CN210089201U (en) | 2019-05-29 | 2019-05-29 | Phase change is shunt and year cold system for secondary refrigerant |
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| CN210089201U true CN210089201U (en) | 2020-02-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230898A (en) * | 2019-05-29 | 2019-09-13 | 天津商业大学 | Phase transformation refrigerating medium current divider and refrigerating system |
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2019
- 2019-05-29 CN CN201920792510.5U patent/CN210089201U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230898A (en) * | 2019-05-29 | 2019-09-13 | 天津商业大学 | Phase transformation refrigerating medium current divider and refrigerating system |
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