CN204787413U - Slab evaporation -condensation formula hot and cold water unit - Google Patents

Slab evaporation -condensation formula hot and cold water unit Download PDF

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Publication number
CN204787413U
CN204787413U CN201520339702.2U CN201520339702U CN204787413U CN 204787413 U CN204787413 U CN 204787413U CN 201520339702 U CN201520339702 U CN 201520339702U CN 204787413 U CN204787413 U CN 204787413U
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China
Prior art keywords
check valve
heat exchanger
valve
injector
water
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CN201520339702.2U
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Inventor
李应林
陈传宝
谭来仔
沈勇
汤昱
高翔
王楠
孙思
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NANJING WUZHOU REFRIGERATION GROUP CO Ltd
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NANJING WUZHOU REFRIGERATION GROUP CO Ltd
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Abstract

The utility model discloses a slab evaporation -condensation formula hot and cold water unit, including compressor, oil separator, cross check valve, water side heat exchanger, solenoid valve, drier -filter, air -vent valve, ejector, board segmented heat exchanger and low pressure reservoir, compressor, oil separator and cross check valve are consecutive, four ports of cross check valve are A end, B end, C end and D end respectively, oil separator links to each other with the B end of cross check valve. The utility model discloses a refrigerant draws penetrates recycling for the refrigerant flow of evaporimeter entry increased when the system moved under system cold die formula or the mode of heating, and the double -phase mass dryness fraction of refrigerant reduces the increase with heat exchange coefficient, can effectively reduce board segmented heat exchanger's area, the utility model discloses do not use throttling arrangement, realize inflation step -down process through the ejector, reduced the irreversible loss in the refrigeration expansion line, can improve system's wholeness ability.

Description

A kind of plate evaporating condensation type water chiller-heater unit
Technical field
The utility model relates to air conditioning and refrigeration technical field, is a kind of plate evaporating condensation type water chiller-heater unit specifically.
Background technology
Current vapor compression heat pump air-conditioner set can be divided into water cooling heat pump air-conditioner set, air-cooled heat-pump air-conditioner group and geo-source heat-pump air conditioner group according to condensing mode.Wherein, air-cooled heat-pump air-conditioner group adopts forced ventilation mode to realize the heat exchange of condenser inner refrigerant and air, and it is when summer, outdoor environment temperature was higher, and heat exchange effect is poor, easily cause the condensing pressure of system and condensation temperature higher, thus affect the overall performance of refrigeration system; When winter heating, especially when ambient outdoor air humidity is larger, the easy frosting of heat exchange surface of evaporimeter, what reduce unit effectively heats the working time, reduces the overall heating performance of system.Water cooling heat pump air-conditioner set in condenser, realizes heat exchange by cooling water, and its weak point is that systematic comparison is complicated, and need extra increase water pump and the cooling tower circulatory system, add equipment cost, apparatus arrangement also receives certain restriction simultaneously.Geo-source heat-pump air conditioner group has higher requirement to the water yield at water source and water quality, and its practical application exists the uneven restriction with building geographical conditions of cooling and heating load, and needs a large amount of pipe laying spaces.In addition, existing evaporimeter feed liquid way also exists that the overall Energy Efficiency Ratio of such as dry type vapo(u)rization system is on the low side, the refrigerant charge of full-liquid type vapo(u)rization system is large, falling film evaporation system not easily realizes the problems such as even cloth liquid.Thus market demand more high efficient heat exchanging, safety and reliability, the vapo(u)rization system of more energy-conserving and environment-protective, thus improve the heat exchange property of evaporimeter.
In recent years, air-cooled evaporating condensation type heat exchanger obtains industry and more and more pays close attention to, it leans on the coupled and heat-exchange of heat exchanger outer surface cocycle shower water and Forced Convection Air, compared with traditional dry type air cooling heat exchanger, effectively can improve the coefficient of heat transfer, reduce condensing pressure or improve evaporating pressure.The air-cooled evaporating heat exchanger of patent 96200559.2 adopts a kind of pipe as heat exchange element; The air-cooled evaporating heat exchanger of patent 01211774.9 adopts elliptical tube as heat exchange element, the air-cooled evaporating heat exchanger of patent 200920087731.9 adopts finned tube tube bank for heat exchange element, the air-cooled evaporating heat exchanger of patent 200510076870.8 adopts plate as heat exchange element, and the air-cooled evaporating heat exchanger of patent 200910038011.8 adopts the plate of band filler as heat exchange element.
From air-cooled evaporating condensation type heat exchanger development trend, air-cooled plate evaporating condensation type heat exchanger has better technical advantage and development prospect, but because plate heat exchanger inner channel heat exchange area is general larger, the refrigerant flow relative deficiency of channel interior, heat exchange area fails to be fully utilized, and its heat transfer effect can also improve further.
For this technical problem, the heat pump type air conditioning system of patent 200910244119.5 is by adopting liquid pump, can to evaporimeter (or evaporative condenser) feed flow under cooling in summer operating mode (or winter heating's operating mode), steam side entrance is pure liquid phase refrigerant, and evaporation side refrigerant flow is relatively large, can obtain than traditional dry evaporator or the higher heat exchange efficiency of flooded evaporator; But this patent adds additional refrigerant circulation liquid pump, increases system power dissipation, unfavorable to the lifting of entire system efficiency.
From the above analysis, in existing plate evaporating condensation type heat pump type air conditioning system, due to the underfed of plate heat exchanger refrigeration wing passage inner refrigerant, the heat exchange area of plate heat exchanger is not fully utilized, the overall heat exchange effect of plate heat exchanger is still undesirable, suddenly treats further improvement.
Utility model content
For achieving the above object, the technical solution adopted in the utility model is: a kind of plate evaporating condensation type water chiller-heater unit, comprises compressor, oil eliminator, four-way check valve, water-side heat, magnetic valve, device for drying and filtering, pressure regulator valve, injector, plate type heat exchanger and low-pressure oil storage;
Described compressor, oil eliminator are connected successively with four-way check valve, and four ports of described four-way check valve are respectively A end, B end, C end and D end; Described oil eliminator is held with the B of four-way check valve and is connected;
The import of described water-side heat is held with the C of four-way check valve and is connected, and the outlet of water-side heat, magnetic valve, device for drying and filtering, pressure regulator valve are connected successively with injector;
The A end of described four-way check valve is connected with plate type heat exchanger;
The D end of described four-way check valve is connected with low-pressure oil storage;
Described injector is provided with E, F, G tri-ports altogether; Described pressure regulator valve hold with the E of injector be connected, the F of described injector holds and is connected with low-pressure oil storage bottom interface, and the entrance of low-pressure oil storage is also connected with compressor 1; The C end of described injector is connected with plate type heat exchanger, and plate type heat exchanger is held with the A of four-way check valve and is connected.
As preferably, be also provided with the first check valve between described water-side heat and magnetic valve, the circulating direction of described first check valve flows to magnetic valve from water-side heat.
As preferably, the G port of described injector is provided with two branch roads, and a branch road is connected to plate type heat exchanger by the second check valve, and another article of branch road is then connected between the outlet of water-side heat and the first check valve by the 3rd check valve; Also be provided with a branch path between described second check valve and plate type heat exchanger, this branch path is connected between the first check valve and magnetic valve by the 4th check valve.
Beneficial effect: the utility model has the following advantages compared with conventional solution:
(1) the utility model is recycled by cold-producing medium injection, when system is run in cooling or heating mode, the refrigerant flow of evaporator inlet increases, cold-producing medium two degree of coherence reduces and the coefficient of heat transfer increases, and can effectively reduce the area of plate type heat exchanger;
(2) the utility model does not use throttling arrangement, realizes expansion pressure reduction by injector, reduces the irreversible loss in refrigerant-expansion process, can improve entire system performance.
Accompanying drawing explanation
Fig. 1 is system flow schematic diagram of the present utility model;
Fig. 2 is cooling system schematic flow sheet of the present utility model;
Fig. 3 is that system of the present utility model heats schematic flow sheet.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further illustrated.
As shown in Figure 1, a kind of plate evaporating condensation type water chiller-heater unit, comprises compressor 1, oil eliminator 2, four-way check valve 3, water-side heat 4, magnetic valve 5, device for drying and filtering 6, pressure regulator valve 7, injector 8, plate type heat exchanger 9 and low-pressure oil storage 10; Compressor 1 wherein, oil eliminator 2 are connected successively with four-way check valve 3, and four ports of described four-way check valve 3 are respectively A end, B end, C end and D end; Described oil eliminator 2 is held with the B of four-way check valve 3 and is connected.
The import of water-side heat 4 is held with the C of four-way check valve 3 and is connected, and the outlet of water-side heat 4, magnetic valve 5, device for drying and filtering 6, pressure regulator valve 7 are connected successively with injector 8; The A end of four-way check valve 3 is connected with plate type heat exchanger 9; The D end of four-way check valve 3 is connected with low-pressure oil storage 10;
Injector 8 of the present utility model is provided with E, F, G tri-ports altogether; Described pressure regulator valve 7 hold with the E of injector 8 be connected, the F of described injector 8 holds and is connected with low-pressure oil storage 10 bottom interface, and the entrance of low-pressure oil storage 10 is also connected with compressor 1; The C end of described injector 8 is connected with plate type heat exchanger 9, plate type heat exchanger 9 is held with the A of four-way check valve 3 and is connected, the G port of injector 8 is provided with two branch roads, article one, branch road is connected to plate type heat exchanger 9 by the second check valve 12, and another article of branch road is then connected between the outlet of water-side heat 4 and the first check valve 11 by the 3rd check valve 13; Also be provided with a branch path between described second check valve 12 and plate type heat exchanger 9, this branch path is connected between the first check valve 11 and magnetic valve 5 by the 4th check valve 14
Also be provided with the first check valve 11 between water-side heat 4 and magnetic valve 5, the circulating direction of described first check valve 11 flows to magnetic valve 5 from water-side heat 4.
Of the present utility modelly be divided into refrigeration mode and heating mode two kinds of mode of operations, refrigeration mode is wherein as shown in Figure 2: the high-pressure refrigerant flowed out from compressor is after oil eliminator, enter the B port of four-way check valve, cooling condensation in plate type heat exchanger is entered from the A port of four-way check valve 3, high pressure liquid refrigerant after cooling condensation is by after the 4th check valve, magnetic valve, device for drying and filtering and pressure regulator valve, send into the E port of injector, as the pressurized working fluid of injector; Low-pressure, liquid refrigerant bottom low-pressure oil storage is pumped to the F port of injector, as low-pressure injection fluid by pressurized working fluid; Pressurized working fluid and low-pressure injection fluid are in injector internal mix and expansion becomes low pressure two phase refrigerant, flow out from the G port of injector 9, heat absorption evaporation in water-side heat is admitted to after the 3rd check valve, low-pressure, liquid refrigerant bottom low-pressure oil storage is pumped in injector, the C port of four-way check valve is entered from the low pressure two-phase mixtures cold-producing medium of injector outflow, from the D port of four-way check valve flow out laggard enter in low-pressure oil storage, after gas-liquid separation, low-pressure gaseous refrigerant is sucked by compressor, completes a kind of refrigeration cycle.
Heating mode of the present utility model is as shown in Figure 3: the high-pressure refrigerant flowed out from compressor is after oil eliminator, enter the B port of four-way check valve, cooling condensation in laggard water inlet side heat exchanger is flowed out from the C port of four-way check valve, high-pressure refrigerant after cooling condensation is by the first check valve, magnetic valve, device for drying and filtering and pressure regulator valve, then the E port of injector is sent into, as the pressurized working fluid of injector; Low-pressure, liquid refrigerant bottom low-pressure oil storage is pumped to the F port of injector, as low-pressure injection fluid by pressurized working fluid; Pressurized working fluid and low-pressure injection fluid are in injector internal mix and expansion becomes low pressure two phase refrigerant, flow out from the G port of injector, heat absorption evaporation in plate type heat exchanger is admitted to after the second check valve, then the A port of four-way check valve is entered, from the D port of four-way check valve flow out laggard enter in low-pressure oil storage, after gas-liquid separation, sucked by compressor, complete one and heat circulation.
The utility model is recycled by cold-producing medium injection, and when system is run in cooling or heating mode, the refrigerant flow of evaporator inlet increases, and cold-producing medium two degree of coherence reduces and the coefficient of heat transfer increases, and can effectively reduce the area of plate type heat exchanger; The utility model does not use throttling arrangement, realizes expansion pressure reduction by injector, reduces the irreversible loss in refrigerant-expansion process, can improve entire system performance.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (3)

1. a plate evaporating condensation type water chiller-heater unit, is characterized in that: comprise compressor (1), oil eliminator (2), four-way check valve (3), water-side heat (4), magnetic valve (5), device for drying and filtering (6), pressure regulator valve (7), injector (8), plate type heat exchanger (9) and low-pressure oil storage (10);
Described compressor (1), oil eliminator (2) are connected successively with four-way check valve (3), and four ports of described four-way check valve (3) are respectively A end, B end, C end and D end; Described oil eliminator (2) is held with the B of four-way check valve (3) and is connected;
The import of described water-side heat (4) is held with the C of four-way check valve (3) and is connected, and the outlet of water-side heat (4), magnetic valve (5), device for drying and filtering (6), pressure regulator valve (7) are connected successively with injector (8);
The A end of described four-way check valve (3) is connected with plate type heat exchanger (9);
The D end of described four-way check valve (3) is connected with low-pressure oil storage (10);
Described injector (8) is provided with E, F, G tri-ports altogether; Described pressure regulator valve (7) hold with the E of injector (8) be connected, the F of described injector (8) holds and is connected with low-pressure oil storage (10) bottom interface, and the entrance of low-pressure oil storage (10) is also connected with compressor (1); The C end of described injector (8) is connected with plate type heat exchanger (9), and plate type heat exchanger (9) is held with the A of four-way check valve (3) and is connected.
2. a kind of plate evaporating condensation type water chiller-heater unit according to claim 1, it is characterized in that: be also provided with the first check valve (11) between described water-side heat (4) and magnetic valve (5), the circulating direction of described first check valve (11) flows to magnetic valve (5) from water-side heat (4).
3. a kind of plate evaporating condensation type water chiller-heater unit according to claim 2, it is characterized in that: the G port of described injector (8) is provided with two branch roads, article one, branch road is connected to plate type heat exchanger (9) by the second check valve (12), and another article of branch road is then connected between the outlet of water-side heat (4) and the first check valve (11) by the 3rd check valve (13); Also be provided with a branch path between described second check valve (12) and plate type heat exchanger (9), this branch path is connected between the first check valve (11) and magnetic valve (5) by the 4th check valve (14).
CN201520339702.2U 2015-05-22 2015-05-22 Slab evaporation -condensation formula hot and cold water unit Active CN204787413U (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105546888A (en) * 2016-01-27 2016-05-04 天津市天商冰源科技发展有限公司 Novel power-free ultra-liquid-supplying refrigerating cycle system
CN105841398A (en) * 2016-04-12 2016-08-10 南京师范大学 Ejecting flow-increasing type heat pump air conditioner system and operation method thereof
CN106288509A (en) * 2015-05-22 2017-01-04 南京五洲制冷集团有限公司 A kind of plate evaporating condensation type water chiller-heater unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106288509A (en) * 2015-05-22 2017-01-04 南京五洲制冷集团有限公司 A kind of plate evaporating condensation type water chiller-heater unit
CN105546888A (en) * 2016-01-27 2016-05-04 天津市天商冰源科技发展有限公司 Novel power-free ultra-liquid-supplying refrigerating cycle system
CN105841398A (en) * 2016-04-12 2016-08-10 南京师范大学 Ejecting flow-increasing type heat pump air conditioner system and operation method thereof

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