CN2298457Y - Cold storage air conditioner using refrigerant supercooling internal melting ice releasing cold way - Google Patents

Abstract

The utility model relates to a cold storage air conditioner, comprising a compressor, a condenser and an evaporator. The utility model is characterized in that the utility model comprises an ice production sub-cooler which is composed of an ice storage container and an ice production coil pipe; an inlet of the ice production coil pipe is connected with an outlet of the condenser and an inlet valve of the evaporator through a valve and valve; an outlet of the ice production coil pipe is connected with an inlet of the compressor and an inlet of a throttling device through the valve and valve; a valve is connected between the outlet of the condenser and the connecting part of the outlet of the valve and the inlet of the throttling device. The ice production sub-cooler directly evaporates, produces ice and accumulates ice, and releases cold through melting the ice in the sub-cooler.

Description

Adopt cold-producing medium to cross the cold accumulation air-conditioner device of cold interior ice-melt releasing cold way

The utility model relates to a kind of cold accumulation air-conditioner device.

At present, the ice-reserving mode in the domestic and international cold accumulation air-conditioner device adopts melt ice on coil mode or complete freezing method (containing ice ball type) more.The former be in charge of outer freeze and pipe in freeze two kinds, icing mode has direct evaporation to freeze and salt solution freezes indirectly, its cold water in deicing processes directly contacts with ice, but release cold control not at that time when outer ice-melt, storage ice does not use up and just begins ice making, has increased the power consumption of ice making equipment because of the thermal resistance die of ice, and for normal ice-melt and extraction frozen water, so the water that Ice Storage Tank inside need be left about 50% does not build-up ice, and keeps the certain centre-to-centre spacing of coil pipe, so just make that the Ice Storage Tank volume is bigger.The latter is frozen for the coil pipe place, and its frame mode is that salt solution freezes indirectly.Though it can make the equal transfixion of water in the Ice Storage Tank in ice making and deicing processes, because the salt solution that adopts is that secondary refrigerant carries out ice-reserving or ice-melt, so increased the heat transfer loss one time.

In addition, cold-producing medium is crossed cold energy to improve refrigerating efficiency is the general knowledge of generally freezing.But the cold mode of traditional mistake waits by increasing condenser heat transfer area and the circulation of refrigeration system backheat and realizes, like this owing to be subjected to the natural temperature state restriction of thermal source (air or water) and consider economy principle, so cold-producing medium is generally only crossed cold 3-5 ℃, this moment cold-producing medium to cross cold mainly be for fear of compressor Wet Compression operating mode and back-steam phenomenons such as " harmful overheated ", improve kind of refrigeration cycle, and can not increase substantially refrigerating capacity.

The purpose of this utility model is exactly in order to address the above problem, and provides a kind of heat loss little, and the employing cold-producing medium that refrigerating capacity is big is crossed the cold accumulation air-conditioner device of cold interior ice-melt releasing cold way.

Technical solution of the present utility model:

A kind of cold accumulation air-conditioner device that adopts cold-producing medium to cross cold interior ice-melt releasing cold way, it includes compressor 1, condenser 2, evaporimeter 3, wherein the import with evaporimeter 3 links to each other the output channel of condenser 2 with valve 7 by throttling arrangement 4, cold-producing medium in the evaporimeter 3 and recirculated water or air carry out heat exchange output cold, cold-producing medium in the condenser 2 and recirculated water or air carry out heat exchange and realize condensation, it is characterized in that it also includes the ice making subcooler of being made up of ice-reserving container 11 and ice making coil pipe 5, wherein the import of ice making coil pipe 5 links to each other with the outlet of condenser 2 and the inlet valve 7 of evaporimeter 3 with valve 6 by valve 10 respectively, the outlet of ice making coil pipe 5 links to each other with the import of compressor 1 and the import of throttling arrangement 4 with valve 8 by valve 9 respectively, and be connected to valve 12 between the import junction of the outlet of valve 8 and throttling arrangement 4 and the outlet of condenser 2, make that the ice making subcooler can the ice making of the direct expansion cold-storage, can cross again cold in ice-melt release cold.

The utility model is direct vaporation-type outside tube pipe ice making, adopt cold-producing medium cross cold in ice-melt release coldly, promptly kept the advantage of " melt ice on coil mode " and " freezing method fully " ice-reserving, overcome the shortcoming of they existence again.The utility model is the ice making of the direct expansion cold-storage, and interior ice-melt releases that cold and the big temperature difference of cold-producing medium are cold excessively to increase substantially refrigerating capacity and refrigerating efficiency organically combines.Owing to be cold with icing, then the liquid refrigerant temperature before the expansion valve can be reduced to (minimum to 2 ℃) below 5 ℃, can improve 42.65% in the icy water unit of the prerequisite leeward nominal condition refrigerating capacity theoretical value that does not increase operate power, limiting condition refrigerating theory value can improve 58.52%.The utility model ice making when air conditioner load is very low " cold-storage ", ice " is got cold " when sky withers the load peak, use the running time of whole or partial alteration's refrigeration compressor, realize " peak load shifting " of electricity consumption, thereby can avoid the peak electricity consumption, alleviate the peak confession that brings of electricity consumption beyond target, defeated, power transformation pressure, at electrical network time-of-use tariffs ratio is 4: 1 o'clock, the operation of air conditioner electricity charge can be saved 40-50%, reduce the capacity of applying to install of the electric power system of refrigeration and auxiliary equipment, if grassroot project adopts the utility model device to carry out the part cold accumulation air-conditioner, when the cold-storage ratio was the 40-50% of refrigeration duty, its cost was similar to conventional central air conditioning gross investment.The utility model not only can be used for all kinds of large and medium-sized central air-conditioning handpiece Water Chilling Units and air-cooled (heat pump) handpiece Water Chilling Units, also can be used for the cabinet air-conditioner device.For utilizing salt solution to do the ice storage system of refrigerating medium, in brine pit, increase the similar sub-cooling coil device of a cover, can realize the purpose that the effect and the big temperature difference of cold-producing medium of electricity consumption " peak load shifting " are crossed cold raising cold equally.

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

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

Fig. 3 is a theory diagram of the present utility model.

As Fig. 1-3, the utility model is when cold-storage, with valve 7, valve 8 and valve 10 are closed, and valve 6, valve 9 and valve 12 are opened, then the refrigerant gas of compressor 1 discharge HTHP enters condenser 2, and in condenser 2, be condensed into highly pressurised liquid, this highly pressurised liquid becomes low-temp low-pressure after throttling arrangement 4 (as expansion valve or capillary) throttling gas liquid mixture enters by valve 6 in the ice making coil pipe 5 in the ice-reserving container 11, be full of pure water in the ice-reserving container 11 at this moment, low-temp low-pressure gas liquid mixture in ice making coil pipe 5 further is vaporized into the refrigerant gas that is complete gaseous state and is back to compressor 1 by valve 9 with regard to the heat of the pure water outside the absorption coil 5 like this.The above-mentioned course of work of repetitive cycling just makes the temperature of ice making coil pipe 5 liquid pure water (being the pure water in the ice-reserving container 11) outward be reduced to zero degree gradually, and produces phase transformation later on, build-ups ice, and finishes the course of work of ice making cold-storage.

The utility model is when refrigeration, with valve 6, valve 9 and valve 12 are closed, and with valve 7, valve 8, valve 10 is opened, then the high-temperature high-pressure refrigerant gas of compressor 1 generation is condensed into highly pressurised liquid by condenser 2, this highly pressurised liquid enters in the ice making coil pipe 5 in the ice-reserving container 11 by valve 10, the coil pipe 5 outer ice of being formed by pure water are carried out heat exchange, melt the ice, cold-producing medium highly pressurised liquid in the coil pipe 5 just descended to be chilled to below 5 ℃ in the heat-absorbing action of melting of ice like this, this subcooled liquid enters evaporimeter 3 through valve 7 by valve 8 again behind throttling arrangement 4 throttlings becoming low-temp low-pressure gas liquid mixture, in evaporimeter 3, further be vaporized into the refrigerant gas that is complete gaseous state, finish a kind of refrigeration cycle course of work, be back to compressor 1 at last again, the above-mentioned course of work of repetitive cycling again and again later on, coldly constantly discharge thereby constantly the cold of the ice in the ice-reserving container 11 is crossed by cold-producing medium, realize that the cold-producing medium ice-melt releases the purpose of cold raising refrigerating capacity.

Ice storage coiled pipe 5 in the utility model has the double action of ice making evaporator and condenser, by above-mentioned working cycles, just realized ice making of the direct expansion cold-storage, cold-producing medium cross cold in ice-melt release cold function, reach to electricity consumption " peak load shifting " and in the electricity consumption peak period (not increasing operate power) and can increase substantially the purpose of aircondition refrigerating capacity.

Claims (1)

1, a kind of cold accumulation air-conditioner device that adopts cold-producing medium to cross cold interior ice-melt releasing cold way, it includes compressor (1), condenser (2), evaporimeter (3), wherein the import with evaporimeter (3) links to each other the output channel of condenser (2) with valve (7) by throttling arrangement (4), cold-producing medium in the evaporimeter (3) and recirculated water or air carry out heat exchange output cold, cold-producing medium in the condenser (2) and recirculated water or air carry out heat exchange and realize condensation, it is characterized in that it also includes the ice making subcooler of being made up of ice-reserving container (11) and ice making coil pipe (5), wherein the import of ice making coil pipe (5) links to each other with the outlet of condenser (2) and the inlet valve (7) of evaporimeter (3) with valve (6) by valve (10) respectively, the outlet of ice making coil pipe (5) links to each other with the import of compressor (1) and the import of throttling arrangement (4) with valve (8) by valve (9) respectively, and be connected to valve (12) between the outlet of the import junction of the outlet of valve (8) and throttling arrangement (4) and condenser (2), make that the ice making subcooler can the ice making of the direct expansion cold-storage, can cross again cold in ice-melt release cold.

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