CN202928187U - A cold water and hot water air-conditioning unit employing series-flow evaporators - Google Patents

A cold water and hot water air-conditioning unit employing series-flow evaporators Download PDF

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Publication number
CN202928187U
CN202928187U CN 201220687039 CN201220687039U CN202928187U CN 202928187 U CN202928187 U CN 202928187U CN 201220687039 CN201220687039 CN 201220687039 CN 201220687039 U CN201220687039 U CN 201220687039U CN 202928187 U CN202928187 U CN 202928187U
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China
Prior art keywords
evaporimeter
hot water
air conditioner
compressor
conditioner cold
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CN 201220687039
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Chinese (zh)
Inventor
唐进军
章立标
马桥
顾林峰
杨平
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Zhejiang state auspicious Limited by Share Ltd
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Zhejiang Guo Xiang Air Conditioner Equipment Co Ltd
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Abstract

The utility model discloses a cold water and hot water air-conditioning unit employing series-flow evaporators and belongs to the field of refrigeration technology. Hot water and cold water of a conventional multi-refrigerating circuit air-conditioning unit share an evaporator and namely chilled water routes corresponding to the refrigerating circuits are connected in parallel and thus the evaporation temperature is lower than the temperature of discharged chilled water, so that the efficiency of the unit is relatively low. The cold water and hot water air-conditioning unit comprises a plurality of refrigerant circulation circuits, each refrigerant circulation circuit comprising a compressor, a condenser, a throttling device and an evaporator. The cold water and hot water air-conditioning unit is characterized in that the chilled water routes of the evaporators are connected in series; and the chilled water exchanges heat with the evaporators in the refrigerating circuits successively and leaves the unit from an outlet of the last evaporator. Compared with the unit with parallel connection of the chilled water routes, the cold water and hot water air-conditioning unit has the following advantage that: the evaporation temperature of one refrigerating circuit rises along with the rise of the temperature of discharged water of the upstream evaporator, so that the efficiency of the unit is improved effectively.

Description

Use the air conditioner cold and hot water unit of crossfire evaporimeter
Technical field
The utility model belongs to refrigeration technology field, specifically a kind of air conditioner cold and hot water unit that uses the crossfire evaporimeter.
Background technology
The sustainable development of current China economy, society more and more depends on the supporting dynamics of the energy, environment, and high efficiency of energy is rationally utilized, and environmental protection has caused the extensive great attention of the whole society.
Along with the raising of people's living standard, air-conditioning has become the general consumer goods from luxury goods, and also when the river rises the boat goes up in incident power consumption.According to statistics, during summer high temperature, the ratio that the air-conditioning power consumption accounts for city spike electricity consumption surpasses 50%.
Improve air-conditioning unit efficiency, reduce resource consumption and discharging, be not only the market behavior of enterprise, especially the embodiment of social responsibility.
At present general air conditioning system maker is absorbed in the unit efficiency, lays particular emphasis on the aspects such as compressor, heat exchanger, motor, blower fan, wind system, cold-producing medium, control system, system matches more, and has ignored the optimization for system process.Common freon system is limited to the inherent characteristic of cold-producing medium, and the heat transfer temperature difference of evaporimeter is larger, evaporator temperature is lower, conventional way is that the heat transfer coefficient or the heat transfer area that improve heat exchanger improve evaporating temperature, but the space of improving is all limited, and is less thereby efficiency increases.
Existing multi-refrigerating circuit air conditioner cold and hot water usually shares an evaporimeter, and referring to Fig. 1, i.e. each refrigerating circuit corresponding freezing water route is connected in parallel, and its evaporating temperature is all lower than the chilled water leaving water temperature, therefore unit efficiency is lower.
The utility model content
The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome existing multi-refrigerating circuit air conditioner cold and hot water usually to share the lower defective of unit efficiency due to an evaporimeter, and a kind of air conditioner cold and hot water unit that uses the crossfire evaporimeter is provided.
For achieving the above object, the air conditioner cold and hot water unit of use crossfire evaporimeter of the present utility model comprises at least two refrigeration cycles, each refrigeration cycle comprises compressor, condenser, throttling arrangement, evaporimeter, each described evaporimeter comprises and the heat exchange water route it is characterized in that: the heat exchange water route of each described evaporimeter is cascaded.
As the optimization technique measure, each described evaporimeter is single refrigerant return device or many refrigerant return devices.
As the optimization technique measure, described unit is monolithic construction or split-type structural.
As the optimization technique measure, each described refrigeration cycle is designed to the kind of refrigeration cycle module.
As the optimization technique measure, the compressor of each refrigeration cycle, condenser, throttling arrangement, evaporimeter all connect into an integral body by pipeline, and each refrigeration cycle is integrated in a framework.
As the optimization technique measure, described compressor is a kind of in rolling rotor compressor, scroll compressor, screw compressor, piston compressor, centrifugal compressor.
As the optimization technique measure, described condenser is a kind of in shell and tube exchanger, plate type heat exchanger, double pipe heat exchanger, finned heat exchanger.
As the optimization technique measure, described evaporimeter is a kind of in shell and tube exchanger, plate type heat exchanger, double pipe heat exchanger, finned heat exchanger.
As the optimization technique measure, described throttling arrangement is a kind of in capillary, electric expansion valve, heating power expansion valve, orifice plate, short tube.
As the optimization technique measure, each described refrigeration cycle is single cold type or pump type heat.
The beneficial effects of the utility model are: being cascaded by the heat exchange water route with each evaporimeter forms the crossfire evaporimeter, compare with the unit of freezing water route parallel connection, raising along with upstream evaporimeter leaving water temperature, total heat transfer temperature difference of system is reduced, average evaporating temperature promotes, thereby improved system energy efficiency, unit efficiency effectively improves.
Description of drawings
Fig. 1 is the air conditioner cold and hot water machine set system schematic diagram of common heat exchange water route parallel connection;
Fig. 2 is the air conditioner cold water machine set system schematic diagram of the utility model embodiment 1;
Fig. 3 is the air conditioner cold water machine set system schematic diagram of the utility model embodiment 2;
Fig. 4 is the air conditioner cold and hot water machine set system schematic diagram of the utility model embodiment 3;
Number in the figure explanation: 1-compressor, 2-condenser, 3-throttling arrangement, 4-evaporimeter, 5-four-way change-over valve.
The specific embodiment
Below in conjunction with Figure of description, the utility model is described further.
The air conditioner cold and hot water unit of use crossfire evaporimeter of the present utility model, as shown in Fig. 2-4, it comprises at least two refrigeration cycles, each refrigeration cycle comprises compressor, condenser, throttling arrangement, evaporimeter, each evaporimeter comprises the heat exchange water route, and the heat exchange water route of each evaporimeter is cascaded.
Concrete, each evaporimeter is single refrigerant return device or many refrigerant return devices.Unit is monolithic construction or split-type structural.Each refrigeration cycle is designed to the kind of refrigeration cycle module, is convenient to the engineering site assembly unit, air conditioner cold and hot water in the crossfire mode by the evaporimeter in each module.Compressor, condenser, throttling arrangement, the evaporimeter of each refrigeration cycle all can also be connected into an integral body by pipeline, each refrigeration cycle is integrated in a framework.Compressor is a kind of in rolling rotor compressor, scroll compressor, screw compressor, piston compressor, centrifugal compressor.Condenser is a kind of in shell and tube exchanger, plate type heat exchanger, double pipe heat exchanger, finned heat exchanger.Evaporimeter is a kind of in shell and tube exchanger, plate type heat exchanger, double pipe heat exchanger, finned heat exchanger.Throttling arrangement is a kind of in capillary, electric expansion valve, heating power expansion valve, orifice plate, short tube.Each refrigeration cycle is single cold type or pump type heat.
Below do by several embodiment and illustrate.
Embodiment 1
As shown in Figure 2, the air conditioner cold water unit that the present embodiment is described, it comprises 2 refrigeration cycles, and each loop comprises compressor 1, condenser 2, throttling arrangement 3, evaporimeter 4, and chilled water passes through 1# refrigeration cycle I and 2# refrigeration cycle II successively with the series connection form.
Embodiment 2
As shown in Figure 3, the air conditioner cold water unit that the present embodiment is described, it comprises 3 refrigeration cycles, each loop comprises compressor 1, condenser 2, throttling arrangement 3, evaporimeter 4, and chilled water passes through 1# refrigeration cycle I, 2# refrigeration cycle II and 3# refrigeration cycle III successively with the series connection form.Be many 1 refrigeration cycles with the difference of embodiment 1.
Embodiment 3
As shown in Figure 4, the air conditioner cold water unit that the present embodiment is described, it comprises 2 refrigeration cycles, each loop comprises compressor 1, condenser 2, throttling arrangement 3, evaporimeter 4, four-way change-over valve 5, and chilled water passes through 1# refrigeration cycle I and 2# refrigeration cycle II successively with the series connection form.
During refrigerating operaton, refrigerant sequence of flow in system is followed successively by: compressor 1 → four-way change-over valve 5 → condenser 2 → throttling arrangement 3 → evaporimeter 4 → four-way change-over valve 5 → compressor 1.
During heating operation, refrigerant sequence of flow in system is followed successively by: compressor 1 → four-way change-over valve 5 → evaporimeter 4 → throttling arrangement 3 → condenser 2 → four-way change-over valve 5 → compressor 1.

Claims (10)

1. use the air conditioner cold and hot water unit of crossfire evaporimeter, comprise at least two refrigeration cycles, each refrigeration cycle comprises compressor (1), condenser (2), throttling arrangement (3), evaporimeter (4), each described evaporimeter (4) comprises and the heat exchange water route it is characterized in that: the heat exchange water route of each described evaporimeter (4) is cascaded.
2. the air conditioner cold and hot water unit of use crossfire evaporimeter according to claim 1, it is characterized in that: each described evaporimeter (4) is single refrigerant return device or many refrigerant return devices.
3. the air conditioner cold and hot water unit of use crossfire evaporimeter according to claim 1, it is characterized in that: described unit is monolithic construction or split-type structural.
4. the air conditioner cold and hot water unit of use crossfire evaporimeter according to claim 1, it is characterized in that: each described refrigeration cycle is designed to the kind of refrigeration cycle module.
5. the air conditioner cold and hot water unit of use crossfire evaporimeter according to claim 1, it is characterized in that: the compressor of each refrigeration cycle, condenser, throttling arrangement, evaporimeter all connect into an integral body by pipeline, and each refrigeration cycle is integrated in a framework.
6. the air conditioner cold and hot water unit of use crossfire evaporimeter according to claim 1 is characterized in that: a kind of in rolling rotor compressor, scroll compressor, screw compressor, piston compressor, centrifugal compressor of described compressor (1).
7. the air conditioner cold and hot water unit of use crossfire evaporimeter according to claim 1 is characterized in that: described condenser is a kind of in shell and tube exchanger, plate type heat exchanger, double pipe heat exchanger, finned heat exchanger.
8. the air conditioner cold and hot water unit of use crossfire evaporimeter according to claim 1 is characterized in that: described evaporimeter is a kind of in shell and tube exchanger, plate type heat exchanger, double pipe heat exchanger, finned heat exchanger.
9. the air conditioner cold and hot water unit of use crossfire evaporimeter according to claim 1 is characterized in that: described throttling arrangement is a kind of in capillary, electric expansion valve, heating power expansion valve, orifice plate, short tube.
10. the air conditioner cold and hot water unit of use crossfire evaporimeter according to claim 1, it is characterized in that: each described refrigeration cycle is single cold type or pump type heat.
CN 201220687039 2012-12-11 2012-12-11 A cold water and hot water air-conditioning unit employing series-flow evaporators Active CN202928187U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN 201220687039 CN202928187U (en) 2012-12-11 2012-12-11 A cold water and hot water air-conditioning unit employing series-flow evaporators

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105042968A (en) * 2015-06-11 2015-11-11 广州市设计院 Control method for high-efficiency operation of multi-compressor energy-step-utilization water-heating unit of water-to-water heat pump
CN105890227A (en) * 2015-07-09 2016-08-24 广东申菱环境系统股份有限公司 Double-source graded heating type hot water unit and control method thereof
CN105910456A (en) * 2016-06-12 2016-08-31 北京烨晶科技有限公司 Green comprehensive cold island equipment and cooling method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105042968A (en) * 2015-06-11 2015-11-11 广州市设计院 Control method for high-efficiency operation of multi-compressor energy-step-utilization water-heating unit of water-to-water heat pump
CN105890227A (en) * 2015-07-09 2016-08-24 广东申菱环境系统股份有限公司 Double-source graded heating type hot water unit and control method thereof
CN105890227B (en) * 2015-07-09 2018-10-19 广东申菱环境系统股份有限公司 A kind of double source grade hot type Hot water units and its control method
CN105910456A (en) * 2016-06-12 2016-08-31 北京烨晶科技有限公司 Green comprehensive cold island equipment and cooling method

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C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: ZHEJIANG KING AIR CONDITIONER CO., LTD.

Free format text: FORMER NAME: ZHEJIANG KING AIR CONDITIONING EQUIPMENT CO., LTD.

CP03 Change of name, title or address

Address after: 312300 Zhejiang city of Shaoxing province Shangyu city street high road No. 18

Patentee after: Zhejiang Guo Xiang air-conditioning limited company

Address before: 312300 Hongxing Village, Shangyu Economic Development Zone (Cao E street, Shaoxing, Zhejiang)

Patentee before: Zhejiang Guo Xiang Air Conditioner Equipment Co., Ltd

C56 Change in the name or address of the patentee
CP01 Change in the name or title of a patent holder

Address after: 312300 Zhejiang city of Shaoxing province Shangyu city street high road No. 18

Patentee after: Zhejiang state auspicious Limited by Share Ltd

Address before: 312300 Zhejiang city of Shaoxing province Shangyu city street high road No. 18

Patentee before: Zhejiang Guo Xiang air-conditioning limited company