CN2463754Y

CN2463754Y - Semi-closed screw-type water source central air conditioning set

Info

Publication number: CN2463754Y
Application number: CN 01201476
Authority: CN
Inventors: 田继民
Original assignee: XINGYE CONSTRUCTION SERVICE CO Ltd CANGZHOU CITY
Current assignee: Beijing Zhongke Jianye Environmental Protection Equipment Technology Development
Priority date: 2001-02-16
Filing date: 2001-02-16
Publication date: 2001-12-05
Anticipated expiration: 2011-02-16

Abstract

The utility model relates to a semi-closed screw-type water source central air conditioner set comprising a compressor connected by a pipeline, a condenser, an evaporator, change valves for cold and hot conditions, a cycle fluid in the pipeline and an electric control part. The cycle fluid uses water sources of superficial layers at the earth surface; the compressor is provided with a semi-closed screw rod type refrigeration compressor; the condenser and the evaporator are provided with braze welded plate heat exchangers; a liquid outlet tube of the condenser is connected with a liquid storage device for controlling pressure balance; the change valves for cold and hot conditions are arranged at a water side and are respectively used as a heating expansion valve and a refrigeration expansion valve. The air conditioning set uses 7-25DEG. C water stored in the earth surface as cold and heat sources, which makes fully use of cleaning renewable energy resources; compared with the traditional air conditioner system, the operation efficiency is increased by 35 percents and the operation cost is saved by 30 percents.

Description

Semi-closed screw type water source central air-conditioning unit

The utility model relates to a kind of heating air-conditioner unit, particularly a kind of central air-conditioning unit.

Global economic development has brought unprecedented energy crisis; the development and use of primary energy are very limited; fire coal, fuel oil, combustion gas etc. are made the heating and air-conditioning system of the energy and are advised order to the considerable damage that natural environment causes for common people, and traditional heating system and direct combustion refrigeration modes are being impacted in pollution problem.And earth surface shallow earth resource has the advantage of the low-grade renewable sources of energy, suddenly treats Application and Development.Existing heat pump air conditioner unit is a cycle fluid with the unitary system cryogen, guarantees the variation of winter, summer heat exchange duty with four-port conversion value, and corresponding heat transmission equipment is air-cooled heat transmission equipment, adopts fin tube type, and volume, weight and appearance and size are high; Various faults often take place in existing piston formula heat pump compressor in actual motion, be not suitable for little temperature difference water source central air-conditioning unit; Existing unit is established balance pipe and is satisfied pressure balance, causes the shutoff of pipeline easily because of hydrops.

The purpose of this utility model provides a kind of semi-closed screw type water source central air-conditioning unit, utilizes the low-grade renewable sources of energy of earth surface shallow earth to make the cycle fluid of central air-conditioning unit, saves primary energy; the protection environment; prevent to pollute, improve work efficiency, save operation and maintenance cost.

The technical scheme of the utility model semi-closed screw type water source central air-conditioning unit: it comprises by the compressor of pipeline connection, condenser, evaporimeter, the switching valve of hot and cold operating mode, kind of refrigeration cycle working medium and the electric control system in the pipeline, it is characterized in that: cycle fluid is earth surface shallow-layer water source, compressor is a semi-closed screw type refrigerating compressor, condenser and evaporimeter are brazing plate type heat exchangers, and the drain pipe of condenser inserts the reservoir that is used for the controlled pressure balance.

The switching valve of above-mentioned hot and cold operating mode is located at the water side, is respectively to heat with expansion valve, cooling expansion valve.

Operation principle of the present utility model: with earth surface shallow-layer water source (7～25 ℃ river, lake water, underground water, the surplus warm water of factory through purifying, treated resident's draining) is refrigerating medium, the source pump of the semiclosed screw type refrigeration-type of adapted compressor.Except being used for refrigeration, can also make evaporimeter draw heat from thermals source such as ground water, river and lake water simultaneously by changing the flow direction of fluid, give some space or object heat supply and emit heat by condenser.Heat the expansion valve work of using summer, cooling expansion valve work in summer.

Advantage of the present utility model: realize green heating air conditioning, utilized the Cooling and Heat Source of earth surface shallow earth resource as the heating air-conditioner unit, the ground that the face of land is contained can become the regenerative resource of cleaning.With 7～25 ℃ of water sources is Cooling and Heat Source, adopt the semi-closed screw type refrigerating compressor unit to improve work efficiency, can reach energy-conservation purpose than operation under the low input power, operational efficiency is higher by 35% than traditional heating air-conditioning system, running cost saves 30%, save cooling water with necessary cooling device of temperature and investment, and reduce or remit a large amount of water consumption that it evaporates in cooling procedure, exempted the pollution of water smoke and mechanicalness noise thereof environment.Do not have burning, do not have smoke evacuation, pollution-free, no waste discharge, do not need to stack fuel refuse place, also transfer heat at a distance is beneficial to environmental protection.Compare with the heating air-conditioner unit of air source heat pump, pollutant emission reduces more than 40%, compares with the power supply heating, reduces more than 70%, reduces by 25% filling quantity than conventional air-conditioning device, avoids cold-producing medium to leak probability.

Condenser and evaporimeter adopt brazing plate type heat exchanger, and compact conformation is compared than double pipe heat exchanger, weight saving 25%, and volume reduces 28%; Heat transfer efficiency is about three times of shell-tube types; A tractor serves several purposes is fit to little temperature difference heat exchange, can not only heat, air-conditioning, but domestic hot-water supply also, the alternative original boiler of a cover system adds two covering devices or the system of air-conditioning.

In order to make full use of the heat exchange area of condenser, reservoir is set satisfies pressure balance, can overcome the shutoff that causes pipeline because of hydrops.

The switching valve of hot and cold operating mode is located at the water side, and the water route is switched the replacement cold-producing medium and switched, and heats with expansion valve, cooling expansion valve and divides two-way control, good reliability.Unit service life is more than 15 years, compact conformation, save the space, maintenance cost is low, avoid user's complicated operation, but control degree height unmanned automatically.

Mechatronics, complete machine dispatches from the factory, and only need connect system's water pipe at the scene and the distribution power supply just can put into operation.Still can effectively move under the unit drift design conditions temperature, pressure, adjust protection pressure parameter and plate temperature control parameter and still can realize automation control; The control core that intelligent microcomputer plate is a unit, global function, oneself's control, monitoring.Every unit all can be assembled into the module unit of different capabilities with the modular unit form arbitrarily, transporting and hoisting, installation and maintenance and convenient.Be applicable to buildings such as hotel, market, office building, school, be more suitable for heating, air-conditioning in villa, dwelling house.

Below in conjunction with drawings and Examples the utility model is described in detail:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is the vertical view of Fig. 1;

Fig. 4 is a fundamental diagram of the present utility model.

Among the figure: 1-semi-closed screw type compressor, 2-condenser, 3-evaporimeter, 4-reservoir, 5-liquid visor, 6-device for drying and filtering, 7-heat with expansion valve, the cooling expansion valve of 8-, 9-gas-liquid separator, 10-frame, 11-blast pipe, the cooling magnetic valve of 12-, 13-and heat with magnetic valve, 14-evaporimeter outlet pipe, 15-condenser water inlet pipe, 16-air intake duct, 17-evaporimeter water inlet pipe, 18-condenser water inlet pipe.

Embodiment: semi-closed screw type water source central air-conditioning unit comprises by the compressor of pipeline connection, condenser, evaporimeter, the switching valve of hot and cold operating mode, kind of refrigeration cycle working medium and the electric control system in the pipeline, cycle fluid is earth surface shallow-layer water source and industrial refrigeration agent, compressor 1 is a semi-closed screw type refrigerating compressor, condenser 2 and evaporimeter 3 are brazing plate type heat exchangers, the drain pipe of condenser 2 inserts the reservoir 4 that is used for the controlled pressure balance, and reservoir adopts horizontal through type.Earth surface shallow-layer water source is 7～25 ℃ river, lake water, underground water, the surplus warm water of factory through purifying, treated resident's draining.The industrial refrigeration agent is monochlorodifluoromethane (R22).There is polyurethane insulation coating condenser, evaporimeter outside.The switching valve of hot and cold operating mode is located at the water side, is respectively to heat with expansion valve 7, cooling expansion valve 8.Two kinds of expansion valve employing low-pressure balance tubular type and high pressure balance tubular types, during refrigeration, 7～13 ℃ of cold water leaving water temperatures, 18～32 ℃ of cold in-water temperatures; During heat supply, 45～55 ℃ of hot water effluent's temperature, the cooling water leaving water temperature is not less than 5 ℃.Refrigerating capacity is 132-400KW, and heating capacity is 140KW-400KW.

Semi-closed screw type refrigerating semi-closed screw type refrigerating compressor and miscellaneous equipment are arranged in the machine both sides, heat exchanger, electric control system separate up and down at the machine homonymy with reservoir, one end of frame is provided with dodge gate, be beneficial to electric operation, the other end is provided with readily removable panel, the system that is beneficial to regulates, and machine both sides panel is provided with the oil level inspection opening, so that visit.

Claims

1, a kind of semi-closed screw type water source central air-conditioning unit, comprise the compressor that connects by pipeline, condenser, evaporimeter, the switching valve of hot and cold operating mode, cycle fluid and the electric control system in the pipeline, it is characterized in that: cycle fluid is earth surface shallow-layer water source, compressor is a semi-closed screw type refrigerating compressor, condenser and evaporimeter are brazing plate type heat exchangers, and the drain pipe of condenser inserts the reservoir that is used for the controlled pressure balance.

2, semi-closed screw type according to claim 1 water source central air-conditioning unit, it is characterized in that: the switching valve of described hot and cold operating mode is located at the water side, is respectively to heat with expansion valve and cooling expansion valve.