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Pump-circulated energy-saving air conditioner
CN201892282U
China
Worldwide applications
2010
CN
Application CN2010206313562U events
2010-11-30
2011-07-06
Application granted
2011-07-06
2020-11-30
Anticipated expiration
Status
Expired - Lifetime
Description
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Technical field
The utility model relates to refrigerated air-conditioning system, relates in particular to a kind of pump circulating energy-saving air-conditioning.
Background technology
In communication machine room and data center, the energy consumption of air conditioner in machine room has accounted for more than 40% of total energy consumption, has quite great proportion, and the energy-saving run of air conditioner in machine room is the important breakthrough point of each operator's energy-saving and emission-reduction action.Air conditioner in machine room has the characteristics of round-the-clock running, when outdoor environment temperature is lower, makes full use of natural cooling source and replaces compressor operating, is the important directions that reduces the air conditioner in machine room energy consumption.
The existing method of utilizing natural cooling source to freeze has three kinds usually: 1. fresh air refrigerating.After outdoor new wind filtered by air cleaner, directly deliver to communication machine room or data center room, and be discharged to outdoorly behind the indoor hot-air mixed heat transfer, realize utilizing the refrigeration of natural cooling source by new wind circulation.2. air heat exchange is freezed.Outdoor cold air is introduced air heat exchanger, carries out the noncontact heat exchange with indoor hot-air, heat is discharged to outdoor, realizes utilizing the refrigeration of natural cooling source.3. ethylene glycol cools off naturally.Increase the glycol-cooled coil pipe in indoor set, at the dry and cold device of outdoor layout, by dry and cold device cooling refrigerating medium ethylene glycol, deliver to the cooled ethylene glycol of pump handle in the cooling coil of indoor set and carry out heat exchange with hot-air, realization utilizes the refrigeration of natural cooling source.
Above several modes have the following disadvantages:
1. fresh air refrigerating directly feeds communication machine room or data center the inside to outdoor air, though passed through the air cleaner filtration, but the dust in the outdoor air still can't filter totally fully, and indoor cleanliness factor is relatively poor, and the maintenance period of air cleaner also is the problem that must face always; If contain corrosive gas such as sulfur dioxide in the air, also can cause to a certain degree infringement to the equipment of communication machine room or data center; The relative humidity of new wind is controlled the comparison difficulty; Must on the body of wall of communication machine room or data center, open bigger air vent, destroy the integrality of building, and bring hidden danger such as leak heat, cold bridge, leak simultaneously; The new common volume of blower fan group is bigger, needs independent the installation, takies indoor usable floor area etc.;
2. the air heat exchange refrigeration also must be opened bigger air vent on the body of wall of machine room, has destroyed and has built
The integrality of thing, and brought hidden danger such as leak heat, cold bridge, leak simultaneously; The common volume of air heat exchange unit is bigger, needs independent the installation, takies careat etc.;
3. ethylene glycol cools off unit integrated glycol-cooled coil pipe in indoor units naturally, causes the long-term windage of indoor fan bigger, and the long-term power of indoor fan is higher, has brought more discount for its energy saving; The heat exchange efficiency of ethylene glycol solution is lower, and cools off by the air-cooled dry and cold device of enclosed, when causing environment temperature higher during compressor operating condensation temperature higher, compressor operating power is higher, has brought more discount also for its energy saving; Customer investment is bigger.
Summary of the invention
The purpose of this utility model is to solve above-mentioned problems of the prior art, proposes a kind of pump circulating energy-saving air-conditioning.
The pump circulating energy-saving air-conditioning that the utility model proposes comprises: the refrigeration system of being made up of outside and indoor, described outside comprises condenser, described indoor comprises compressor, expansion valve and evaporimeter, be connected by pipeline between indoor and the outside, wherein, be provided with first branch road in parallel between described condenser and the expansion valve with compression refrigeration circulation stream, this first branch road is provided with a reservoir and a circulating pump, described compressor parallel has second branch road, this second branch road is provided with a check (non-return) valve, described expansion valve is parallel with the 3rd branch road, described first branch road, second branch road and the 3rd route solenoid control constitute the pump circulating energy-saving device with evaporimeter and condenser.
Compared with prior art, it is a kind of when outdoor environment temperature is lower that the utility model provides, and makes full use of natural cooling source, utilizes pump to circulate and replace compressor operating, realizes the air conditioner in machine room of energy-saving run.The utility model utilizes evaporimeter, condenser, tube connector and the indoor and outdoor blower fan of original air conditioner in machine room fully jointly, does not take the interior space of communication machine room or data center, need not open air vent on body of wall, and compact conformation is easy for installation; The circulating pump that drives by frequency conversion or pressure regulation promotes the circulation of cold-producing medium, reaches best refrigerant flow all the time, the heat exchange efficiency height; The circulation pump power that frequency conversion or pressure regulation drive is littler, and is energy-saving better.
Description of drawings
Below, contrast accompanying drawing and preferred embodiment are elaborated to the utility model, wherein:
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, pump circulating energy-saving air conditioner component indoor A and outside B two parts of the utility model proposes.The indoor comprises compressor 1, evaporimeter 13, expansion valve 12 etc., and the outside comprises condenser 4, reservoir 6, circulating pump 7 etc., and indoor and outside couple together by tube connector.
The utlity model has two kinds of refrigerating operaton patterns of compression mechanism cold operation and pump circular flow, two kinds of refrigerating operaton patterns can automatically switch by magnetic valve according to factors such as heat load sizes in outdoor environment temperature, the machine room, to reach refrigeration system optimum operation efficiency.
At outdoor environment temperature higher or indoor/outdoor temperature-difference less in, with the compressor cooling mode operation, circulating path is: compressor 1--check (non-return) valve 2--condenser 4--check (non-return) valve 5--check (non-return) valve 9--magnetic valve 10--expansion valve 12--evaporimeter 13--magnetic valve 14--vapour liquid separator 15--compressor 1, finish a circulation.In compressor operating, the demand of cold-producing medium does not have pump circulation so much, and unnecessary cold-producing medium will be stored in the reservoir 6 with the parallel connection of compression refrigeration circulation stream.When compressor 1 and circulating pump 7 switch, in the evaporimeter 13 a large amount of refrigerant liquids will be arranged, therefore, before compressor, increase a vapour liquid separator 15, when avoiding compressor start, a large amount of refrigerant liquids enter compressor, improve the reliability of compressor operating.
At outdoor environment temperature lower or indoor/outdoor temperature-difference bigger in, move with the circulating pump refrigeration mode, circulating path is: circulating pump 7--check (non-return) valve 8--magnetic valve 11--evaporimeter 13--check (non-return) valve 3--condenser 4--check (non-return) valve 5--circulating pump 7, finish a circulation.In pump operating cycle, store certain refrigerant liquid all the time in the reservoir 6 in parallel with pump circulation stream, because the liquid level discrepancy in elevation of reservoir and pump inlet provides certain static pressure pressure reduction, cavitation can not appear in the time of can guaranteeing pump operating cycle.The liquid level of reservoir must be considered the net positive suction head of circulating pump itself and the reservoir resistance to pipeline between pump inlet.In order to ensure there being certain refrigerant liquid in the reservoir all the time, between reservoir and condenser, increased check (non-return) valve 5, when guaranteeing that compressor or circulating pump are shut down, the refrigerant liquid in the reservoir can not be back in the condenser 4.When heat load changes in the indoor units of different capabilities and the machine room, the refrigerating capacity that requires circulating pump to provide, promptly the refrigerating capacity flow is different, therefore, the cold-producing medium circulating pump has adopted frequency conversion or pressure-adjusting type circulating pump, reaches the Optimal Control to refrigerant flow.
Energy-saving effect of the present invention is remarkable, unit with 60kW is an example, under identical refrigerant flow condition, the power of pump operating cycle only is about 6% of the compressor horsepower that moves under the same environmental condition under frequency conversion or pressure regulation drive, for the unit of bigger refrigerating capacity, the energy saving of pump circulation is just more obvious.
Claims (5)
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Claims (5)
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1. pump circulating energy-saving air-conditioning, comprise: the refrigeration system of forming by outside and indoor, described outside comprises condenser, described indoor comprises compressor, expansion valve and evaporimeter, be connected by pipeline between indoor and the outside, it is characterized in that: be provided with first branch road in parallel between described condenser (4) and the expansion valve (12) with compression refrigeration circulation stream, this first branch road is provided with a reservoir (6) and a circulating pump (7), described compressor parallel has second branch road, this second branch road is provided with a check (non-return) valve (3), described expansion valve is parallel with the 3rd branch road, described first branch road, second branch road and the 3rd route solenoid control constitute the pump circulating energy-saving device with evaporimeter (13) and condenser (4).
2. energy-saving type air conditioner according to claim 1 is characterized in that: described compressor outlet, condensator outlet, circulating-pump outlet are respectively arranged with check (non-return) valve (2,5,9,8).
3. energy-saving type air conditioner according to claim 1 is characterized in that: described compressor front end is provided with vapour liquid separator (15) and magnetic valve (14).
4. energy-saving type air conditioner according to claim 1 is characterized in that: the certain static pressure pressure reduction of the high maintenance of the liquid level between described reservoir (6) and circulating pump (7) import.
5. energy-saving type air conditioner according to claim 1 is characterized in that: described circulating pump adopts frequency conversion type circulating pump, perhaps pressure-adjusting type circulating pump.