CN100443828C - Comprehensive refrigerating device - Google Patents

Comprehensive refrigerating device Download PDF

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Publication number
CN100443828C
CN100443828C CNB2005100180132A CN200510018013A CN100443828C CN 100443828 C CN100443828 C CN 100443828C CN B2005100180132 A CNB2005100180132 A CN B2005100180132A CN 200510018013 A CN200510018013 A CN 200510018013A CN 100443828 C CN100443828 C CN 100443828C
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lithium bromide
source pump
heat exchanger
bromide unit
evaporimeter
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CN1740704A (en
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冯全琛
冯晓妍
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冯全琛
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Abstract

The present invention relates to a comprehensive refrigerating device which comprises a quasi heat pump unit and a lithium bromide unit, wherein the quasi heat pump unit is composed of a heat pump unit compressor (1), a heat pump unit throttle expansion valve (3) and a heat pump unit evaporator (4), and the lithium bromide unit is composed of a lithium bromide unit generator (7-1), a lithium bromide unit condenser (7-2), a lithium bromide unit evaporator (7-3) and a lithium bromide unit absorber (7-4). A heat source inlet pipe opening and a heat source outlet pipe opening of the generator of the lithium bromide unit are respectively connected with a high temperature and high pressure refrigerant gas output pipe opening of the heat pump unit compressor and the refrigerant input pipe opening of the heat pump unit throttle expansion valve through pipelines; the high temperature and high pressure refrigerant gas outputted by the heat pump unit compressor is used as a heat source and is directly transferred to the double effect steam lithium bromide unit for refrigeration. The present invention has the advantages that the present invention can be used for refrigeration under the condition that the environmental temperature is higher in summer, and the refrigeration efficiency ratio is high; the recovered waste heat can be used for the refrigeration; the heat pump unit only has one kind of heating operating mode, and the structure of the heat pump unit can be optimized.

Description

A kind of comprehensive refrigerating device
Technical field
The present invention relates to freeze and a kind of comprehensive refrigerating device of air-conditioning technical field.This comprehensive refrigerating device is specially adapted to the place that the higher area of summer temp needs refrigeration and air-conditioning.
Background technology
1, the refrigeration modes of using always at present
Refrigeration modes commonly used at present generally adopts compression-type refrigeration or absorption refrigeration.
The compression-type refrigeration mode needs four big critical piece, i.e. compressor 1, condenser 2, throttle expansion valve 3 and evaporimeters 4.The compression-type refrigeration mode all will consume a part of electric energy and freeze.Its operation principle is: compressor compresses the low-temperature low-pressure refrigerant gas that sucks and becomes high-temperature high-pressure refrigerant gas; High-temperature high-pressure refrigerant gas enters condenser cooling, warm high pressure refrigerant liquid in becoming (discharge heat of liquefaction, promptly heat); In warm high pressure refrigerant liquid enter evaporimeter through throttle expansion valve, absorb extraneous thermal source (for example air) heat of vaporization, become low-temperature low-pressure refrigerant gas (i.e. refrigeration); Low-temperature low-pressure refrigerant gas enters compressor again and carries out next one circulation.As shown in Figure 1.
The absorption refrigeration mode also needs four big critical piece, i.e. generator 7-1, condenser 7-2, evaporimeter 7-3, absorber 7-4.The absorption refrigeration mode all is to consume a part of heat energy to freeze.Its operation principle is: add weak solution in the heater with the heat of thermal source, generate high-temperature water vapor and concentrated solution; High-temperature water vapor enters condenser and is condensed into water; Condensed water enters evaporimeter, absorbs external heat and becomes water at low temperature steam (i.e. refrigeration); The water at low temperature steam enters in the absorber by concentrated solution and absorbs liquefaction, becomes weak solution and enters and carry out next one in the generator and circulate.Though the absorption refrigeration mode has the branch of single-effective absorption and double effect absorption, their basic functional principle all is identical.As shown in Figure 2.
2, the coefficient of refrigerating performance of existing refrigeration modes
In the Refrigeration ﹠ Air-Conditioning field,, introduced the notion of Energy Efficiency Ratio in order to compare the performance of refrigeration machine.The ratio of refrigerating capacity that obtains with the unit interval or heating capacity and the energy of unit interval input, the Energy Efficiency Ratio during expression refrigeration machine refrigeration or the Energy Efficiency Ratio when heating.
Compression refrigerating machine is under standard condition at present, and the Energy Efficiency Ratio when refrigeration is generally 3, and the Energy Efficiency Ratio when heating is generally 3.5.With the refrigeration technical term, be exactly: the electric energy that every input is 1 kilowatt just can obtain 3 kilowatts cold or 3.5 kilowatts heat.
The Energy Efficiency Ratio of present Absorption Refrigerator when refrigeration, to single-effective absorption refrigerating machine, Energy Efficiency Ratio can reach 0.8; To double-effect absorption refrigerating machine, Energy Efficiency Ratio can reach 1.4.
Summary of the invention
Purpose of the present invention is utilized the characteristics of above-mentioned compression-type refrigeration and absorption refrigeration just, it is organically made up, thereby a kind of comprehensive refrigerating device is provided.More specifically say, the characteristic that comprehensive refrigerating device of the present invention utilizes the Energy Efficiency Ratio of source pump (compression refrigerating machine a kind of) when heating to raise and increase with thermal source (for example air) temperature, change this traditional method of operation of source pump refrigeration in summer, make source pump in summer high temperature environment, carry out heating operation, higher heating energy efficiency ratio can be arranged; The heat that source pump is made is supplied with lithium bromide unit (Absorption Refrigerator) and is freezed as the thermal source of lithium bromide unit again, just can obtain quite high refrigeration efficiency ratio.The maximum feature of this comprehensive refrigerating device is exactly that its refrigeration efficiency is than the product that equals source pump heating energy efficiency ratio and lithium bromide refrigerating unit Energy Efficiency Ratio.
Purpose of the present invention can realize by following technique measures:
Comprehensive refrigerating device of the present invention comprises the accurate source pump of being made up of source pump compressor, source pump throttle expansion valve, source pump evaporimeter, and the lithium bromide unit of forming by lithium bromide unit generator, lithium bromide unit condenser, lithium bromide unit evaporimeter, lithium bromide unit absorber, the thermal source of the generator of described lithium bromide unit is connected with the high-temperature high-pressure refrigerant gas output tube mouth of source pump compressor, the refrigerated medium input mouth of pipe of source pump throttle expansion valve respectively by pipeline into and out of the mouth of pipe.More specifically say, (also can be described as the tube bundle of source pump condenser and economic benefits and social benefits steam lithium bromide unit generator is united two into one with the alternative source pump condenser of the generator of lithium bromide unit, become a common component, and be installed in the inside of economic benefits and social benefits steam lithium bromide refrigerating unit generator, the heating tube bundle that is economic benefits and social benefits steam lithium bromide refrigerating unit generator is the heater block of lithium bromide refrigerating unit generator, also be the condensate component of source pump simultaneously), the high-temperature high-pressure refrigerant gas of source pump compressor output is by the tube bundle in the generator that is installed in economic benefits and social benefits steam lithium bromide refrigerator, adds directly that bromize lithium dilute solution freezes in the heater.
Since from economic benefits and social benefits steam lithium bromide refrigerating unit generator come out the temperature of warm high pressure refrigerant liquid than higher, the absorption of heat to external world when influencing refrigerant liquid and in the source pump evaporimeter, gasifying, for as often as possible from extraneous draw heat, Energy Efficiency Ratio when the raising source pump heats, according to above-mentioned basic structure, the present invention can adopt the measure of regenerative system thermal technology to realize, that is: the low-temperature low-pressure refrigerant gas piping of source pump compressor is connected with the source pump evaporimeter by the low-temperature low-pressure refrigerant gas passage of heat exchanger, and middle temperature high pressure refrigerant liquid (the being thermal source) export pipeline of lithium bromide unit generator is connected with the source pump throttle expansion valve by the middle temperature high pressure refrigerant liquid path of heat exchanger.
For waste heat is fully utilized, the present invention also can adopt following technical proposals to realize: promptly described source pump evaporimeter can be designed to sleeve type structure, the outlet of source pump throttle expansion valve is inserted in the input port of the circular passage between its inner sleeve and the outer tube, and the delivery outlet of circular passage is connected with the low-temperature low-pressure refrigerant gas input port of heat exchanger; The cooling water input port of the inner sleeve of described source pump evaporimeter inserts the cooling water delivery outlet of lithium bromide unit condenser, and the cooling water backwater port of lithium bromide unit absorber is inserted in the another port by radiator.
In order to guarantee the normal in the winter time heat supply of source pump, the present invention can also realize by following technique measures: this technical scheme is to set up auxiliary heat exchanger and three triple valves and four water system valves to realize on the basis of aforementioned techniques measure.Specifically, the high-temperature high-pressure refrigerant gas output tube mouth of described source pump compressor is connected with the input port of source pump compressor air-discharging triple valve, the refrigeration exit passageway of source pump compressor air-discharging triple valve inserts the thermal source inlet of the generator of lithium bromide unit by pipeline, the outlet that heats of source pump compressor air-discharging triple valve is connected with the give vent to anger refrigeration outlet of triple valve of the cold-producing medium input mouth of pipe of auxiliary heat exchanger and source pump evaporimeter respectively by pipeline; The inner sleeve of source pump evaporimeter of sleeve type structure and the delivery outlet of the circular passage between the outer tube are inserted in the give vent to anger input port of triple valve of source pump evaporimeter by pipeline, the give vent to anger exit passageway that heats of triple valve of source pump evaporimeter is connected with the low-temperature low-pressure refrigerant gas input port of heat exchanger and the refrigeration outlet of auxiliary heat exchanger refrigerant outlet triple valve respectively by pipeline; The input port of auxiliary heat exchanger refrigerant outlet triple valve is by the port of export of the refrigerant passage of pipeline access auxiliary heat exchanger, and the outlet that heats of auxiliary heat exchanger refrigerant outlet triple valve is connected with the middle temperature high pressure refrigerant liquid input port of heat exchanger and the thermal source outlet of lithium bromide unit generator respectively by pipeline; The input of the cooling-water duct of auxiliary heat exchanger and lithium bromide unit condenser cooling water delivery outlet join, the port of export of the cooling-water duct of auxiliary heat exchanger is divided into two-way, one the tunnel is connected with the cooling water input of the inner sleeve of source pump evaporimeter through valve, and another road joins through an air conditioner water pipeline of valve and lithium bromide unit evaporimeter; The cooling water delivery outlet of lithium bromide unit condenser also joins by another air conditioner water pipeline of pipeline and lithium bromide unit evaporimeter; In the cross-over connection on the pipeline of the cooling water of auxiliary heat exchanger by-passing valve is arranged.
Advantage of the present invention is as follows:
1, under summer environment temperature condition with higher, freezes, quite high refrigeration efficiency ratio can be arranged.
2, can utilize the waste heat of recovery to freeze.
3, source pump has only a kind of heating operation state.Can optimize the structure of source pump.
Description of drawings
Fig. 1 is the source pump schematic diagram.
Fig. 2 is the schematic diagram of economic benefits and social benefits steam lithium bromide refrigerating unit.
Fig. 3 is first kind of embodiment schematic diagram of the present invention.
Fig. 4 is second kind of embodiment schematic diagram of the present invention.
Fig. 5 is the third embodiment schematic diagram of the present invention.
Fig. 6 is the 4th a kind of embodiment schematic diagram of the present invention
1 is the source pump compressor among the figure, the 2nd, the source pump condenser, the 3rd, the source pump throttle expansion valve, the 4th, the source pump evaporimeter, the source pump evaporimeter of 4 ' sleeve type structure, the 5th, heat exchanger, the 6th, auxiliary heat exchanger, the 7th, economic benefits and social benefits steam lithium bromide refrigerating unit, 7-1 is the generator of lithium bromide unit, 7-2 is the condenser of lithium bromide unit, 7-3 is the evaporimeter of lithium bromide unit, 7-4 is the absorber of lithium bromide unit, 7-5 is the solution heat exchanger of lithium bromide unit, 7-6 is a double-effect lithium bromide unit solution pump, 7-7 is a double-effect lithium bromide unit cooling water water pump, 8-1 is a source pump compressor air-discharging triple valve, and 8-2 is the source pump evaporimeter triple valve of giving vent to anger, and 8-3 is an auxiliary heat exchanger refrigerant outlet triple valve, the 9th, radiator, the 10th, the water bypass of auxiliary heat exchanger, 11,12, the 13rd, the water system valve ,-be the flow direction of solid arrow medium when representing that freeze summer,--be the flow direction of dotted arrow medium when representing winter heating, A is the thermal source gateway, and B is the cooling water gateway, and C is the air conditioner water gateway.
The specific embodiment
The present invention is further described below with reference to embodiment (accompanying drawing):
Embodiment 1:
As shown in Figure 3, comprehensive refrigerating device of the present invention comprises by source pump compressor 1, source pump throttle expansion valve 3, the accurate source pump that source pump evaporimeter 4 is formed, and by lithium bromide unit generator 7-1, lithium bromide unit condenser 7-2, lithium bromide unit evaporimeter 7-3, the lithium bromide unit that lithium bromide unit absorber 7-4 forms, the thermal source of the generator 7-1 of described lithium bromide unit advances, outlet spout by pipeline respectively with the high-temperature high-pressure refrigerant gas output tube mouth of source pump compressor 1, the cold-producing medium input mouth of pipe of source pump throttle expansion valve 3 is connected.More specifically say, the condenser that substitutes source pump with the generator of lithium bromide unit (also can be described as the tube bundle of source pump condenser and economic benefits and social benefits steam lithium bromide unit generator is united two into one, become a common component, and be installed in the inside of economic benefits and social benefits steam lithium bromide refrigerating unit generator, the heating tube bundle that is economic benefits and social benefits steam lithium bromide refrigerating unit generator is the heater block of lithium bromide refrigerating unit generator, also be the condensate component of source pump simultaneously), the high-temperature high-pressure refrigerant gas of source pump compressor output is by the tube bundle in the generator that is installed in economic benefits and social benefits steam lithium bromide refrigerator, adds directly that bromize lithium dilute solution freezes in the heater.This also is a most basic a kind of technical scheme of the present invention.
This embodiment of the present invention utilizes the high-temperature high-pressure refrigerant gas of source pump compressor output as thermal source, directly gives economic benefits and social benefits steam lithium bromide unit generator and freezes, and its concrete operation principle and mode are as follows:
High-temperature high-pressure refrigerant gas release heat in the generator 7-1 of economic benefits and social benefits steam lithium bromide refrigerating unit of source pump compressor 1 output, warm high pressure refrigerant liquid in becoming (promptly heating) for economic benefits and social benefits steam lithium bromide refrigerating unit provides thermal source; In warm high pressure refrigerant liquid enter the evaporimeter 4 of source pump through throttle expansion valve 3 after coming out by economic benefits and social benefits steam lithium bromide refrigerating unit generator 7-1, gasify after absorbing external heat, become low-temperature low-pressure refrigerant gas; Low-temperature low-pressure refrigerant gas enters compressor 1 and is compressed into high-temperature high-pressure refrigerant gas, carries out next one circulation again.
In the generator 7-1 of economic benefits and social benefits steam lithium bromide unit, because the heat that has been discharged when having absorbed the high-temperature high-pressure refrigerant gas liquefaction, moisture content in the bromize lithium dilute solution just is evaporated and becomes high-temperature water vapor, simultaneously, weak solution has become concentrated solution and has entered lithium bromide unit absorber 7-4 through solution heat exchanger 7-5.The condenser 7-2 cooling fluid that high-temperature water vapor enters the lithium bromide unit changes into condensed water; After condensed water enters lithium bromide unit evaporimeter 7-3, absorb external heat and be gasificated into water vapour (i.e. refrigeration) and enter lithium bromide unit absorber 7-4; In absorber 7-4, concentrated solution becomes weak solution after absorbing water vapour, and weak solution enters among the lithium bromide generator 7-1 through solution pump 7-6 and solution heat exchanger 7-5 again, carries out next one circulation.
For the Energy Efficiency Ratio that guarantees economic benefits and social benefits steam lithium bromide refrigerating unit is 1.2~1.4, temperature, flow and the pressure of the high-temperature high-pressure refrigerant gas of source pump compressor output should meet the specification requirement of economic benefits and social benefits steam lithium bromide refrigerating unit.
Require the high-temperature high-pressure refrigerant gas of source pump compressor output, must in the generator of economic benefits and social benefits steam lithium bromide unit, liquefy.
Use proper compression machine and cold-producing medium, so that compressor air suction is when the big as far as possible degree of superheat, the normal and heating energy efficiency ratio of compressor operating is unlikely to descend or obviously descend.
Embodiment 2:
As shown in Figure 4, since from economic benefits and social benefits steam lithium bromide refrigerating unit generator come out the temperature of warm high pressure refrigerant liquid than higher, the absorption of heat to external world when influencing refrigerant liquid and in the source pump evaporimeter, gasifying, for as often as possible from extraneous draw heat, Energy Efficiency Ratio when the raising source pump heats, according to above-mentioned (shown in Figure 3) basic structure, present embodiment has adopted the regenerative system thermal technology, that is: present embodiment and the difference of the embodiment 1 low-temperature low-pressure refrigerant gas piping that is described source pump compressor 1 is connected with source pump evaporimeter 4 by the low-temperature low-pressure refrigerant gas passage of heat exchanger 5, and the middle temperature high pressure refrigerant liquid export pipeline of lithium bromide unit generator 7-1 is connected with source pump throttle expansion valve 3 by the middle temperature high pressure refrigerant liquid path of heat exchanger 5.Specifically, between source pump evaporimeter 4 and compressor 1, set up heat exchanger 5, enter compressor 1 after making the low-temperature low-pressure refrigerant gas passage of low-temperature low-pressure refrigerant gas by heat exchanger 5 of coming out by source pump evaporimeter 4, make the middle temperature high pressure refrigerant liquid of being come out by economic benefits and social benefits steam lithium bromide refrigerating unit generator 7-1 pass through the middle temperature high pressure refrigerant liquid path of heat exchanger 5, warm high pressure refrigerant liquid carries out entering throttle expansion valve 3 again after the heat exchange with low-temperature low-pressure refrigerant gas in heat exchanger 5 in making; The refrigerant liquid that enters throttle expansion valve has had suitable big supercooling degree, just can absorb more external heat when it gasifies in source pump evaporimeter 4; And the low-temperature low-pressure refrigerant gas that enters the source pump compressor has had the big as far as possible degree of superheat.This embodiment makes the source pump compressor that big as far as possible suction superheat be arranged, and makes the refrigerant liquid of input source pump throttle expansion valve 3 that corresponding degree of supercooling be arranged.Utilize the purpose of regenerative system thermal technology, will reduce the temperature of the refrigerant liquid of input throttle expansion valve exactly as far as possible, the heat that refrigerant liquid temperature reduction is simultaneously separated out also will return to compressor.The high-temperature high-pressure refrigerant gas that utilizes the output of source pump compressor is as thermal source, and the generator of directly importing economic benefits and social benefits steam lithium bromide unit freezes.Utilizing the regenerative system thermal technology also is an important technology scheme of the present invention.
Embodiment 3:
As shown in Figure 5, the purpose of present embodiment is for waste heat is fully utilized, and the difference of it and embodiment 2 is that it is to set up radiator and the evaporimeter of source pump is designed to the sleeve type structure form by common single hose version on the basis of embodiment 2 technical schemes; It is described source pump evaporimeter 4 ' for sleeve type structure, the outlet of source pump throttle expansion valve 3 is inserted in the input port of the circular passage between its inner sleeve and the outer tube, and the other end of the circular passage between inner sleeve and the outer tube is connected with the low-temperature low-pressure refrigerant gas input port of heat exchanger 5; Described source pump evaporimeter 4 ' the cooling water input port of inner sleeve insert the cooling water delivery outlet of lithium bromide unit condenser 7-2, the cooling water output port of inner sleeve inserts the cooling water backwater port of lithium bromide unit absorber 7-4 by radiator 9.
The concrete operation principle of this heat recovery technology is as follows: by the cooling water of economic benefits and social benefits steam lithium bromide unit condenser 7-2 output successively by source pump evaporimeter 4 ' inner sleeve, radiator 9, economic benefits and social benefits steam lithium bromide unit absorber 7-4 and cooling water water pump 7-7 form the peripheral passage; Make refrigerant liquid that source pump throttle expansion valve 3 comes out from source pump evaporimeter 4 ' inner sleeve and the circular passage between the outer tube pass through after, middle temperature high pressure refrigerant liquid path, source pump throttle expansion valve 3 and the source pump evaporimeter 4 ' formation peripheral passage of the low-temperature low-pressure refrigerant gas passage by heat exchanger 5, source pump compressor 1, economic benefits and social benefits steam lithium bromide unit generator 7-1, heat exchanger 5 successively again; Thermal source air (or water) by source pump evaporimeter 4 ' the outside of outer tube pass through.Source pump evaporimeter 4 ' in, refrigerant liquid can absorb the heat of cooling water in the inner sleeve and the heat in the outer tube outside thermal source air (or heat source water), gasification forms low-temperature low-pressure refrigerant gas.The heat of considering vapour lithium bromide refrigerating unit cooling water is more, needed heat when being far longer than the refrigerant liquid vaporization, unnecessary heat must distribute, for this reason can source pump evaporimeter 4 ' bottom (or top) radiator 9 is set, make cooling water by source pump evaporimeter 4 ' inner sleeve after enter radiator 9 again, unnecessary heat is taken away by air (or heat source water).Radiator 9 plays the effect of cooling tower to a certain extent.Present embodiment is that the waste heat (heat in the cooling water) that utilize to reclaim freezes, and is actually to have provided a kind of low-grade energy to be promoted into the method for high-grade energy, and this also is a notable feature of the present invention.
Embodiment 4:
As shown in Figure 6, the purpose of present embodiment is in order to guarantee that this comprehensive refrigerating device can normal in the winter time heat supply.This embodiment sets up auxiliary heat exchanger and three triple valves and four water system valves to realize on the basis of embodiment 3.Specifically, the high-temperature high-pressure refrigerant gas output tube mouth of described source pump compressor 1 is connected with the input port of source pump compressor air-discharging triple valve 8-1, the refrigeration exit passageway of triple valve 8-1 inserts the thermal source inlet of the generator 7-1 of lithium bromide unit by pipeline, the outlet that heats of triple valve 8-1 is connected with the give vent to anger refrigeration outlet of triple valve 8-2 of the cold-producing medium input mouth of pipe of auxiliary heat exchanger 6 and source pump evaporimeter respectively by pipeline; The source pump evaporimeter give vent to anger triple valve 8-2 the input port by pipeline insert the source pump evaporimeter 4 of sleeve type structure ' inner sleeve and the delivery outlet of the circular passage between the outer tube, the give vent to anger exit passageway that heats of triple valve 8-2 of source pump evaporimeter is connected with the low-temperature low-pressure refrigerant gas input port of heat exchanger 5 and the refrigeration outlet of auxiliary heat exchanger refrigerant outlet triple valve 8-3 respectively by pipeline; The input port of auxiliary heat exchanger refrigerant outlet triple valve 8-3 is by the port of export of the refrigerant passage of pipeline access auxiliary heat exchanger 6, and the outlet that heats of auxiliary heat exchanger refrigerant outlet triple valve 8-3 is connected with the middle temperature high pressure refrigerant liquid input port of heat exchanger 5 and the thermal source outlet of lithium bromide unit generator 7-1 respectively by pipeline; The input of the cooling-water duct of auxiliary heat exchanger 6 and lithium bromide unit condenser 7-2 cooling water delivery outlet join, the port of export of the cooling-water duct of auxiliary heat exchanger 6 is divided into two-way, one the tunnel through valve 11 and source pump evaporimeter 4 ' the cooling water input of inner sleeve be connected, another road joins through the air conditioner water pipeline of valve 12 with lithium bromide unit evaporimeter 7-3; Lithium bromide unit condenser 7-2 cooling water delivery outlet also joins by another air conditioner water pipeline of pipeline and lithium bromide unit evaporimeter 7-3; In the cross-over connection on the pipeline of the cooling water of auxiliary heat exchanger 6 by-passing valve 10 is arranged.
The present invention can utilize the switching between three triple valves realization source pump and the economic benefits and social benefits steam lithium bromide unit, use this device when carrying out refrigerating operaton summer, substantially according to frame mode operation shown in Figure 5, when carrying out heating operation in the winter time, move according to the mode of heating of conventional source pump substantially.Its operation principle is as follows:
Summer during refrigerating operaton by three triple valves of operation, make the high-temperature high-pressure refrigerant gas of source pump compressor 1 output, along direction shown in the solid arrow among Fig. 6, successively by source pump compressor air-discharging triple valve 8-1, economic benefits and social benefits steam lithium bromide unit generator 7-1, middle temperature high pressure refrigerant liquid path in the heat exchanger 5, throttle expansion valve 3, source pump evaporimeter 4 ', the source pump evaporimeter triple valve 8-2 that gives vent to anger, auxiliary heat exchanger 6, auxiliary heat exchanger refrigerant outlet triple valve 8-3, the low-temperature low-pressure refrigerant gas passage of heat exchanger 5, returning the source pump compressor compresses.Also need in addition to operate four water system valves simultaneously: promptly close water system valve 12, the system that fetches boiling water valve 10,11,13, the cooling water that makes economic benefits and social benefits steam lithium bromide unit condenser 7-2 output is successively by water system valve 10 (have a small amount of cooling water and flow through auxiliary heat exchanger 6 this moment), water system valve 11, source pump evaporimeter 4 ' inner sleeve, radiator 9, economic benefits and social benefits steam lithium bromide unit absorber 7-4, economic benefits and social benefits steam lithium bromide unit cooling water water pump 7-7, return economic benefits and social benefits steam lithium bromide unit condenser 7-2, by economic benefits and social benefits steam lithium bromide unit evaporimeter 7-3 output chilled water.Regulating water system valve 10 also is the equal of the backheat amount that changes auxiliary heat exchanger 6 when refrigerating operaton, under water system valve 10 complete opening situations, and backheat amount minimum.
In the winter time during the independent heating operation of source pump, by operating three triple valves, make source pump compressor 1 send high-temperature high-pressure refrigerant gas, enter auxiliary heat exchanger 6 heat radiation liquefaction (being the effect that auxiliary heat exchanger is equivalent to the source pump condenser), warm high pressure refrigerant liquid in becoming through source pump compressor air-discharging triple valve 8-1 successively along dotted arrow direction among Fig. 6; In warm high pressure refrigerant liquid through the middle temperature high pressure refrigerant liquid path of auxiliary heat exchanger refrigerant outlet triple valve 8-3, heat exchanger 5, throttle expansion valve 3, source pump evaporimeter 4 ', the give vent to anger low-temperature low-pressure refrigerant gas passage of triple valve 8-2, heat exchanger 5 of source pump evaporimeter returns source pump compressor 1 and compresses, carry out next one again and circulate.Also need to operate simultaneously four water system valves in addition: the system that promptly fetches boiling water valve 12, close water system valve 10,11,13, the air-conditioning duct that the heat that source pump is made is sent into economic benefits and social benefits steam lithium bromide unit evaporimeter 7-3 by the cooling water of auxiliary heat exchanger 6 via water system valve 12 heats.The structure of present embodiment can not only have quite high refrigeration efficiency ratio when freezing summer, can also realize the normal heating in winter simultaneously, has improved usage ratio of equipment.This is the advantage place of present embodiment just also.

Claims (2)

1, a kind of comprehensive refrigerating device, it comprises by source pump compressor (1), source pump throttle expansion valve (3), the accurate source pump that source pump evaporimeter (4) is formed, and by lithium bromide unit generator (7-1), lithium bromide unit condenser (7-2), lithium bromide unit evaporimeter (7-3), the lithium bromide unit that lithium bromide unit absorber (7-4) is formed, it is characterized in that: the thermal source of the generator of described lithium bromide unit (7-1) advances, outlet spout by pipeline respectively with the high-temperature high-pressure refrigerant gas output tube mouth of source pump compressor (1), the cold-producing medium input mouth of pipe of source pump throttle expansion valve (3) is connected; The low-temperature low-pressure refrigerant gas piping of described source pump compressor (1) is connected with source pump evaporimeter (4) by the low-temperature low-pressure refrigerant gas passage of heat exchanger (5), and the thermal source export pipeline of lithium bromide unit generator (7-1) is connected with source pump throttle expansion valve (3) by the middle temperature high pressure refrigerant liquid path of heat exchanger (5); Described source pump evaporimeter (4) is sleeve type structure (4 '), the outlet of source pump throttle expansion valve (3) is inserted in the input port of the circular passage between its inner sleeve and the outer tube, and the delivery outlet of annular flow path is connected with the low-temperature low-pressure refrigerant gas input port of heat exchanger (5); The cooling water input port of the inner sleeve of described source pump evaporimeter (4 ') inserts the cooling water delivery outlet of lithium bromide unit condenser (7-2), and the cooling water backwater port of lithium bromide unit absorber (7-4) is inserted in the another port by radiator (9).
2, according to claims 1 described comprehensive refrigerating device, it is characterized in that: the high-temperature high-pressure refrigerant gas output tube mouth of described source pump compressor (1) is connected with the input port of source pump compressor air-discharging triple valve (8-1), the refrigeration exit passageway of this source pump compressor air-discharging triple valve (8-1) inserts the thermal source inlet of the generator (7-1) of lithium bromide unit by pipeline, the outlet that heats of this source pump compressor air-discharging triple valve (8-1) is connected with the give vent to anger refrigeration outlet of triple valve (8-2) of the cold-producing medium input mouth of pipe of auxiliary heat exchanger (6) and source pump evaporimeter respectively by pipeline; The inner sleeve of source pump evaporimeter (4 ') of sleeve type structure and the delivery outlet of the circular passage between the outer tube are inserted in the give vent to anger input port of triple valve (8-2) of described source pump evaporimeter by pipeline, the give vent to anger exit passageway that heats of triple valve (8-2) of this source pump evaporimeter is connected with the low-temperature low-pressure refrigerant gas input port of heat exchanger (5) and the refrigeration outlet of auxiliary heat exchanger refrigerant outlet triple valve (8-3) respectively by pipeline; The port of export of the refrigerant passage of auxiliary heat exchanger (6) is inserted by pipeline in the input port of described auxiliary heat exchanger refrigerant outlet triple valve (8-3), and the outlet that heats of this auxiliary heat exchanger refrigerant outlet triple valve (8-3) is connected with the middle temperature high pressure refrigerant liquid input port of heat exchanger (5) and the thermal source outlet of lithium bromide unit generator (7-1) respectively by pipeline; The input of the cooling-water duct of auxiliary heat exchanger (6) and lithium bromide unit condenser (7-2) cooling water delivery outlet join, the port of export of the cooling-water duct of auxiliary heat exchanger (6) is divided into two-way, one the tunnel is connected through the cooling water input of valve (11) with the inner sleeve of source pump evaporimeter (4 '), and another road joins through the air conditioner water pipeline of valve (12) with lithium bromide unit evaporimeter (7-3); Lithium bromide unit condenser (7-2) cooling water delivery outlet also joins by another air conditioner water pipeline of pipeline and lithium bromide unit evaporimeter (7-3); In the cross-over connection on the pipeline of the cooling water of auxiliary heat exchanger (6) by-passing valve (10) is arranged.
CNB2005100180132A 2005-09-20 2005-09-20 Comprehensive refrigerating device Expired - Fee Related CN100443828C (en)

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