CN100520232C - Air conditioner - Google Patents
Air conditioner Download PDFInfo
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- CN100520232C CN100520232C CNB2005100625013A CN200510062501A CN100520232C CN 100520232 C CN100520232 C CN 100520232C CN B2005100625013 A CNB2005100625013 A CN B2005100625013A CN 200510062501 A CN200510062501 A CN 200510062501A CN 100520232 C CN100520232 C CN 100520232C
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- producing medium
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- outdoor heat
- heat converter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/54—Heating and cooling, simultaneously or alternatively
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2327/00—Refrigeration system using an engine for driving a compressor
- F25B2327/001—Refrigeration system using an engine for driving a compressor of the internal combustion type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2501—Bypass valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
This invention provides an air conditioner suppressing deterioration of heating capacity by suppressing radiation from a refrigerant of an outdoor heat exchanger to outside air when an outside air temperature is low during heating operation. When the the temperature of the outside air is lower than a set temperature during the heating operation, valve closing operation of closing an opening and closing valve 71 is carried out by a control means 75. Consequently, inflow of the refrigerant from an upstream side into the outdoor heat exchanger 14 can be suppressed. And a reverse flow of the refrigerant from a junction 19h side of a bypass passage 19 to an outdoor heat exchanger 14 side is prevented by a check valve 72. Accordingly, deterioration of heating efficiency due to the inflow of the refrigerant into the outdoor heat exchanger 14 during low temperature heating can be suppressed.
Description
Technical field
The present invention relates to carry out at least the air conditioner of warming operation.The present invention can be used in the engine driving type air conditioner machine that is for example driven the compressor that is used for compressed refrigerant by the drive division of representing engines such as gas engine.
Background technology
With the engine driving type air conditioner machine is that example illustrates now and possesses skills.Air conditioner is called engine driving type heat pump apparatus again, generally has: compressor is used for compressed refrigerant; Engine is used for the drive compression machine; Indoor heat converter, the cold-producing medium of discharging from compressor when making warming operation passes through, and carries out heat exchange with indoor air, thereby to indoor heating; Outdoor heat converter comes work as evaporimeter, has passed through the cold-producing medium of indoor heat converter and extraneous air when making warming operation and has carried out heat exchange and evaporate; The cold-producing medium peripheral passage is used to connect compressor, indoor heat converter, outdoor heat converter; And evaporation uses heat exchanger, makes to flow through the cold-producing medium peripheral passage, flow to the cold-producing medium of compressor and engine cooling water and carry out heat exchange and evaporate.Herein, engine cooling water is heated by the used heat of engine.
Yet outdoor heat converter obtains the heat of extraneous air by heat exchange when warming operation, come work as the evaporimeter that makes the cold-producing medium evaporation, thereby prerequisite is the temperature height of the temperature of extraneous air than the cold-producing medium of outdoor heat converter.Therefore, when the temperature of extraneous air is low during the indoor heating running, outdoor heat converter just can not fully obtain the heat from extraneous air, not only can not bring into play function as scheduled as evaporimeter, on the contrary, also can be from outdoor heat converter to the low extraneous air heat release of temperature, the heating capacity of air-conditioner will descend.
Also have, when the temperature of extraneous air was hanged down, indoor temperature was also low, thereby needed to improve heating capacity.As the technology that improves heating capacity, the technology that following patent documentation 1～3 relates to is known.A kind of engine driving type air conditioner device is disclosed in the patent documentation 1, it has the engine that drives the compressor that makes the cold-producing medium circulation, be provided with control device, so that control, make when the low low temperature heating of outdoor temperature, indoor temperature, according to the high side pressure of cold-producing medium, ignition timing, valve timing, the fuel control valve of control engine, thus the waste heat of engine is increased.Like this, when the low low temperature heating of outdoor temperature, indoor temperature, just improved the indoor heating ability.
The technology of record in the patent documentation 2, in patent documentation 1, control according to the high side pressure of cold-producing medium the invention of record, increase the engine waste heat amount, but according to the temperature of the cooling water of cooled engine, control ignition timing, valve timing, the fuel control valve of engine, thereby the waste heat of engine is increased, control according to this, the indoor heating ability improves when making low temperature heating.
A kind of air-conditioner is disclosed in the patent documentation 3, it has allows the fluids such as warm water that generate in the boiler flow into, and cold-producing medium is heated, and comes the outdoor heat converter of work as evaporimeter, and, adjust the amount of the fluids such as warm water of inflow outdoor heat exchanger according to air conditioner load.According to this air-conditioner, become the heating open and close valve of full cut-off when when the upstream side of outdoor heat converter is provided with warming operation, becoming standard-sized sheet, cooling operation.
[patent documentation 1] spy opens flat 08-No. 049942 communique
[patent documentation 2] spy opens flat 11-No. 022551 communique
[patent documentation 3] spy opens flat 09-No. 217963 communiques
Summary of the invention
[problem that invention will solve]
According to the technology of above-mentioned patent documentation 1,2,, come the outdoor heat converter of work still can not obtain the heat of extraneous air fully as evaporimeter even effectively increase has been guaranteed the indoor heating ability from the waste heat of engine.Because this point, the waste heat of the engine that has increased will make the temperature of the cold-producing medium of outdoor heat converter become than the temperature height of extraneous air, and in this case, outdoor heat converter will be emitted heat to extraneous air.In this case, originally being used as evaporimeter comes the outdoor heat converter of work to come work as condenser.Therefore will ineffectually increase the engine waste heat amount.
In addition, when the temperature of extraneous air was hanged down, the outdoor heat converter that comes work as evaporimeter even if make the air quantity of fan to outdoor heat converter descend, stop, can not suppressing the natural heat release from outdoor heat converter extraneous air being emitted when hot.
Also have, according to the technology of above-mentioned patent documentation 3, the heating open and close valve that is located at the upstream side of outdoor heat converter is standard-sized sheet when indoor heating turn round, but the operation that the temperature that does not mention extraneous air was just closed when hanging down.
The present invention In view of the foregoing proposes, its problem provides following air conditioner: when indoor heating turns round and external air temperature when low, inhibition is from the heat release to extraneous air of the cold-producing medium of outdoor heat converter, suppress originally to be used as evaporimeter and come the outdoor heat converter of work to come work, also can suppress the reduction of heating capacity when externally air themperature is low as condenser.
[being used to solve the device of problem]
The air conditioner that first technical scheme of the present invention relates to has:
Compressor is used for compressed refrigerant;
Indoor heat converter is located at indoorly, and the cold-producing medium of the high temperature of discharging from this compressor during warming operation is by wherein, carries out heat exchange with indoor air, thereby to indoor heating;
Outdoor heat converter is located at outdoorly, and the cold-producing medium and the extraneous air that have passed through above-mentioned indoor heat converter when making warming operation carry out heat exchange, makes the cold-producing medium evaporation;
The cold-producing medium peripheral passage is used to connect above-mentioned compressor, above-mentioned indoor heat converter and above-mentioned outdoor heat converter;
The bypass path, the mode of walking around above-mentioned outdoor heat converter by the cold-producing medium in the above-mentioned cold-producing medium peripheral passage is connected with above-mentioned cold-producing medium peripheral passage; And
Heat exchanger use in evaporation, is located in above-mentioned bypass path or the above-mentioned cold-producing medium peripheral passage, make to flow through above-mentioned bypass path or above-mentioned cold-producing medium peripheral passage, flow to the cold-producing medium of above-mentioned compressor and the medium that provides from heating source carries out heat exchange and evaporates,
It is characterized in that having:
Open and close valve, when being located at warming operation in the above-mentioned cold-producing medium peripheral passage of the upstream side of above-mentioned outdoor heat converter than the part of above-mentioned bypass forehearth limb part by the downstream;
Return and end valve, the part of converging than above-mentioned bypass path in the above-mentioned cold-producing medium peripheral passage in the downstream of above-mentioned outdoor heat converter when being located at warming operation is by the part of upstream side, allow cold-producing medium circulation to above-mentioned bypass path, stop cold-producing medium from of the circulation of above-mentioned bypass path to the above-mentioned cold-producing medium peripheral passage in the downstream of above-mentioned outdoor heat converter from the above-mentioned cold-producing medium peripheral passage in the downstream of above-mentioned outdoor heat converter; And
Control device when the temperature of extraneous air is lower than design temperature during warming operation, carries out the valve that closes of cutting out above-mentioned open and close valve and operates.
Also have,, in first technical scheme, it is characterized in that according to second technical scheme of the present invention,
In above-mentioned bypass path, be provided with and make cold-producing medium expansion and the adjustable expansion valve of opening degree,
Above-mentioned control device is made as in execution and cuts out closing valve when operation of above-mentioned open and close valve, and the opening degree that can carry out the opening degree that makes above-mentioned expansion valve increases increases operation.
Also have,, in second technical scheme, it is characterized in that according to the 3rd technical scheme of the present invention,
Above-mentioned evaporation is located in the above-mentioned bypass path with above-mentioned expansion valve with heat exchanger,
Above-mentioned control device is made as when the opening degree that makes above-mentioned expansion valve increases, and can carry out to make from above-mentioned heating source increases operation to the heat that the heat of the unit interval that above-mentioned evaporation provides with heat exchanger increases.
Also have,, in arbitrary technical scheme of the first～three, it is characterized in that according to the 4th technical scheme of the present invention,
Above-mentioned heating source is any one in engine, boiler, fuel cell, the gas turbine, the medium that provides from above-mentioned heating source be by above-mentioned heating source heat, main component is the liquid medium of water.
[invention effect]
When the temperature of extraneous air is lower than design temperature during warming operation, outdoor heat converter can not obtain heat fully from extraneous air, and not only the function as evaporimeter suffers damage, and, the heat of the cold-producing medium of outdoor heat converter is seized by extraneous air, and heating capacity will descend.Therefore, in first technical scheme of the present invention, when the temperature of extraneous air was lower than design temperature, control device just carried out the valve that closes of the open and close valve in the cold-producing medium peripheral passage of cutting out the upstream side that is located at outdoor heat converter and operates.Owing to close open and close valve like this, thereby just suppressed the cold-producing medium inflow outdoor heat exchanger of the upstream side of outdoor heat converter.Also have, return end valve be installed in outdoor heat converter the downstream and than with the point of bypass path by upstream side, thereby can suppress cold-producing medium and flow backwards to outdoor heat converter from the bypass path.Therefore, the heat that can suppress the cold-producing medium of outdoor heat converter is seized by extraneous air, and then just can suppress the reduction of heating capacity.
In first technical scheme of the present invention, open and close valve is located in the cold-producing medium peripheral passage of upstream side (upstream side during heating) of outdoor heat converter.But, in this case, open and close valve must be located at the part that is positioned at than lean on the downstream from the branch point of cold-producing medium peripheral passage branch, this be because, if open and close valve is located at than above-mentioned branch point by upstream side, then the valve operation of closing of open and close valve has not only suppressed cold-producing medium and has flow into outdoor heat converter, and has suppressed cold-producing medium and flow into the bypass path.
Also have, can enumerate in the bypass path, to be provided with and cold-producing medium is expanded and the mode of the expansion valve that opening degree is adjustable.For this situation, as second technical scheme of the present invention, can enumerate following mode: control device is made as under the situation that external air temperature is low when indoor heating turns round, can carry out the valve that closes of closing open and close valve and operate, and can carry out the opening degree increase operation of the opening degree increase that makes expansion valve.In this case, as mentioned above, close the valve that closes of open and close valve when carrying out warming operation and operate, just suppressed the inflow of cold-producing medium to outdoor heat converter, the result just flows to the bypass path as other stream, and the flow that flows to the cold-producing medium of bypass path will increase.Therefore, just should tackle the increase of the flow of the cold-producing medium that flows in the bypass path, preferably, the opening degree of the expansion valve that is provided with in the bypass path be increased.
Also have, can enumerate evaporation and be located at mode in the bypass path with expansion valve with heat exchanger.In this case, make the words of the opening degree increase of expansion valve, flowing through the evaporation that is provided with in the bypass path will increase with the flow of the cold-producing medium of heat exchanger, thereby evaporation will increase with the heat exchange amount in the heat exchanger, and the temperature of the medium (for example engine cooling water) of evaporation usefulness heat exchanger probably will step-down.As a result, evaporation will be not enough with the evaporative power in the heat exchanger, and evaporation probably will descend with the evaporation flow of the cold-producing medium in the heat exchanger, and then probably will descend as the function of evaporation with the evaporimeter of heat exchanger.To this, can enumerate the mode as the 3rd technical scheme of the present invention, be that control device is made as when the opening degree increase that makes expansion valve, can carry out heat increases operation, and this heat increases to grasp to make from heating source and increases to the heat that the unit interval that provides with heat exchanger is provided.Increase operation if carry out above-mentioned heat, just can make from heating source increases to the heat that the unit interval that provides with heat exchanger is provided, even evaporation has increased with the heat exchange amount in the heat exchanger, also can guarantee to evaporate evaporation flow, and then also can guarantee as the function of evaporation with the evaporimeter of heat exchanger with the cold-producing medium in the heat exchanger.
Compressor is driven by drive division, as drive division, as long as can the drive compression machine, what device can, can enumerate engine, motor etc.As heating source, can enumerate one of engine, boiler, fuel cell, gas turbine, can also adopt other thermal source in addition.In a word, as heating source, so long as can give at the device of evaporation, no matter which type of can with the heat that promotes the cold-producing medium gasification in the heat exchanger.As above-mentioned engine, the engine that comprises gas engine that the fuel with fuel gas drives, drives with fluid combustion.Also have,, can enumerate with the mode as the liquid medium of main component such as the warmed-up water of heating source from the medium that heating source provides.As this liquid medium, can enumerate the mode that the used heat with engine, boiler, fuel cell, gas turbine etc. heats.
Description of drawings
Fig. 1 is a concept map of schematically representing the gas engine driving type air conditioner machine in the 1st embodiment example of the present invention.
Fig. 2 relates to the 1st application examples that the 1st embodiment example has been specialized, and is the concept map of schematically representing the pipe arrangement of gas engine driving type air conditioner machine.
Fig. 3 is the concept map of the pipe arrangement of representing that schematically engine cooling water flows through.
Fig. 4 is a concept map of schematically representing the gas engine driving type air conditioner machine in the 2nd embodiment example of the present invention.
Fig. 5 relates to the 2nd application examples that the 2nd embodiment example has been specialized, and is the concept map of schematically representing the pipe arrangement of gas engine driving type air conditioner machine.
The specific embodiment
Below, with reference to the mode of description of drawings enforcement involved in the present invention.
(the 1st embodiment example)
Fig. 1 represents the notion of embodiments of the invention.The related air conditioner of present embodiment is a gas engine driving type air conditioner machine.At first, with reference to Fig. 1 gas engine driving type air conditioner machine is described.This routine gas engine driving type air conditioner machine is used for indoor refrigeration or heating, has following part as basic building block: gas engine (engine) 11, the drive division that drives as the burning by fuel gas; Storage heater 12 is deposited the cold-producing medium of the gaseous state under the released state and the cold-producing medium of liquid state; Compressor 13 is driven by gas engine 11, sucks along with driving from the cold-producing medium of the gaseous state of storage heater 12 and to it to compress; Indoor heat converter 17 can carry out the heat exchange of cold-producing medium and indoor air for air-conditioning, to indoor heat of emitting the cold-producing medium of HTHP, comes work as the condenser that makes refrigerant condenses during warming operation; And outdoor heat converter 14, can carry out the heat exchange of cold-producing medium and extraneous air for air-conditioning, obtain the heat of extraneous air during warming operation, come work as the evaporimeter that makes the cold-producing medium evaporation.Cold-producing medium peripheral passage 1 connects storage heater 12, compressor 13, indoor heat converter 17 and outdoor heat converter 14.
As shown in Figure 1, bypass path 19 is connected in parallel with cold-producing medium peripheral passage 1.Bypass path 19 is by the fluidic junction 19h that converges from the branching portion 19s of cold-producing medium peripheral passage 1 branch, with cold-producing medium peripheral passage 1 and be communicated with cold-producing medium peripheral passage 1, walks around outdoor heat converter 14 and makes flow of refrigerant.Be provided with expansion valve 18 in the bypass path 19 with the function that cold-producing medium is expanded and gasify.In the cold-producing medium peripheral passage 1, evaporation is located at the fluidic junction 19h of bypass path 19 and the part of the cold-producing medium peripheral passage 1 between the storage heater 12 with heat exchanger 67.
Evaporation has with heat exchanger 67: water passage, wherein flow through the gas engine 11 that is used as heating source waste heat warm water, i.e. engine cooling water (medium); And refrigerant passage, the flow of refrigerant that flow through bypass path 19 and cold-producing medium peripheral passage 1, flows to storage heater 12 flows through therein, be used to make the cold-producing medium of refrigerant passage and the engine cooling water of water passage (warm water) to carry out heat exchange, make the cold-producing medium evaporation that flows to storage heater 12 with the heat of engine cooling water.
Evaporation is located at storage heater 12 fronts one side with heat exchanger 67.Reason is, for the cold-producing medium that offers compressor 13, considers to come compressed refrigerant by compressor 13, the cold-producing medium that has preferably gasified, rather than liquefy, so with heat exchanger 67 cold-producing medium that returns storage heater 12 is gasified with evaporation.
According to present embodiment, this evaporation is made of double pipe heat exchanger with heat exchanger 67, and double pipe heat exchanger is the two-tube structure that is made of the water passage that refrigerant passage that links to each other with cold-producing medium peripheral passage 1 and engine cooling water flow.As shown in Figure 1, evaporation constitutes the configuration of series connection mutually with heat exchanger 67 and outdoor heat converter 14.Also have, bypass path 19 is walked around outdoor heat converter 14 and is connected in parallel with cold-producing medium peripheral passage 1, comes work as the bypass path of walking around outdoor heat exchanger 14.Be provided with the four-way valve 62 that comes work as cross valve in the cold peripheral passage 1.About four-way valve 62, as shown in Figure 1, port 62d and 62c are communicated with during warming operation, and simultaneously, port 62a and 62b are communicated with.Also have, during cooling operation, the port 62d of four- way valve 62 and 62a are communicated with, and port 62c and 62b are communicated with.
Have, as shown in Figure 1, in the cold-producing medium peripheral passage 1, the part at the upstream side of outdoor heat converter 14 (upstream side during the indoor heating running) is equipped with open and close valve again.Also have, in cold-producing medium peripheral passage 1, the part in the downstream (downstream during the indoor heating running) of outdoor heat converter 14, and than the point 19h of bypass path 19 part by upstream side, be equipped with back and end valve 72.This time ends valve 72 allows from the flowing of the cold-producing medium of outdoor heat converter 14 1 side direction point 19h one side flow, and blocks flowing from the cold-producing medium of point 19h one side direction outdoor heat converter 14 1 side flow.Also be provided with the control device 75 of the above-mentioned open and close valve 71 of control.
Secondly, the running action that just heats when indoor is illustrated.By means of fuel gas, gas engine 11 drives, and compressor 13 will drive.Then, sucked by compressor 13, compressed by compressor 13 from the cold-producing medium of the gaseous state of storage heater 12.The cold-producing medium that is compressed and has become HTHP just is discharged to arrow A 1 direction from compressor 13, by port 62d, the 62c of four-way valve 62, flows in arrow A 2 directions, arrow A 3 directions, arrives indoor heat converter 17.The cold-producing medium of HTHP carries out heat exchange with indoor air in indoor heat converter 17, to the indoor heat of emitting, heat indoor.
By indoor heat converter 17 cold-producing medium of liquefaction that carried out condensing promptly, through indoor heat converter 17, divide to arrow A 4 directions and arrow A 5 directions by component 19s, the cold-producing medium that flows in arrow A 4 directions is through open and close valve 71, port one 4u, arrive outdoor heat converter 14, from the heat of outdoor heat converter 14 acquisition extraneous airs, carry out the gasification of cold-producing medium.Carry out heat exchange again in outdoor heat converter 14, the cold-producing medium that has carried out gasification passes through port 62a, the 62b of four-way valve 62 again through port one 4d, ends valve 72 and flow arrows A6 direction via returning, and through fluidic junction 19h, flows to and evaporates with heat exchanger 67.
Also have, be branched off into the cold-producing medium of arrow A 5 directions, arrive expansion valve 18, expand, gasified through expansion valve 18 at branching portion 19s.The cold-producing medium that has passed through expansion valve 18 converges with the cold-producing medium that has passed through outdoor heat converter 14 at fluidic junction 19h again.The cold-producing medium that has converged flows in arrow A 6 directions, flows to evaporation with heat exchanger 67.
,, gasified again with the cold-producing medium that flows in the heat exchanger 67 in evaporation by being heated with heat exchange as the engine cooling water of warm water.Carried out the cold-producing medium of gasification, flowed, returned storage heater 12 in arrow A 7 directions.
But, when the temperature of extraneous air was hanged down than the temperature of the cold-producing medium that flows through outdoor heat converter 14 during the indoor heating running, the cold-producing medium of outdoor heat converter 14 can not obtain heat fully from extraneous air.In this case, not only outdoor heat converter 14 suffers damage as the function of evaporimeter, and the heat of the cold-producing medium of outdoor heat converter 14 is seized by the extraneous air of low temperature, and heating capacity probably will descend.Therefore, according to present embodiment, when indoor heating turned round, when the temperature of extraneous air was lower than design temperature (for example, being predicted as the design temperature lower than the temperature of cold-producing medium), control device 75 just carried out the valve that closes of cutting out open and close valve 71 and operates.Owing to closed open and close valve 71 like this, so the cold-producing medium of upstream side that has suppressed outdoor heat converter 14 is in port one 4u inflow outdoor heat exchanger 14.
Also have, return and end valve 72 and suppressed cold-producing mediums in the bypass path 19 flow back to outdoor heat converter 14 from point 19h one side downstream.Therefore, can reduce the amount of the cold-producing medium that flows to outdoor heat converter 14, so just can be suppressed at the temperature of extraneous air when low, the heat of the cold-producing medium of outdoor heat converter 14 is seized by the extraneous air of low temperature, and then suppresses the reduction of heating capacity really.
As shown in Figure 1, be provided with the external air temperature sensor 200 of the temperature that detects extraneous air and in this pipe arrangement of detection that evaporation is provided with on the pipe arrangement between heat exchanger 67 and the storage heater 12 temperature sensor 202 of the temperature of mobile cold-producing medium.The detection signal of the detection signal of external air temperature sensor 200 and temperature sensor 202 inputs to control device 75.The valve that closes of open and close valve 71 is operated, and according to the detection signal of external air temperature sensor 200 and the detection signal of temperature sensor 202, is decided by control device 75.In this case, during warming operation, external air temperature is low, by external air temperature sensor 200 detected external air temperature T1, than, being estimated as when low by the temperature T 2 of temperature sensor 202 detected gaseous refrigerants, the cold-producing medium that flows through outdoor heat converter 14 is by the extraneous air cooling and condense, thereby carry out the valve that closes of closing open and close valve 71 and operate, this is preferred.Also have, during warming operation, with compare by the temperature T 2 of temperature sensor 202 detected gaseous refrigerants, by external air temperature sensor 200 detected external air temperature T1 when high, can be estimated as, outdoor heat converter 14 can obtain the heat of extraneous air, and the gasification of the cold-producing medium of outdoor heat converter 14 can be carried out, thereby open and close valve 71 is opened in execution, allow the valve of opening of refrigerant flow direction outdoor heat converter 14 operate, and this is preferred.
In addition, difference according to occasion, close the execution of closing the valve operation of open and close valve 71, if temperature sensor 202 is not set, but be provided with the external air temperature sensor 200 of the temperature that detects extraneous air, just, decide, so also be fine by control device 75 according to external air temperature sensor 200.
Also have, as mentioned above, open and close valve 71 is closed, and just can suppress the cold-producing medium inflow outdoor heat exchanger 14 of the upstream side (upstream side during heating) of outdoor heat converter 14, thereby probably can restrict the flow to the contributive cold-producing medium that heats.This point, according to present embodiment, as shown in Figure 1, the bypass path 19 that is communicated with cold-producing medium peripheral passage 1 is walked around outdoor heat converter 14 and is set up in parallel with it.Therefore, cold-producing medium that can not inflow outdoor heat exchanger 14 just can be in arrow A 5 directions by bypass path 19, thereby can guarantee to flow through the flow to the contributive cold-producing medium that heats of cold-producing medium peripheral passage 1.On this meaning, suppressed the reduction of heating capacity.
Carry out the above-mentioned valve operation of closing, because refrigerant flow direction outdoor heat converter 14 has been subjected to inhibition, thereby the flow that flows to as the cold-producing medium of the bypass path 19 of other stream will increase.This point according to present embodiment, is located at expansion valve 18 in the bypass path 19 and is made as opening degree and can adjusts.So, control device 75 carry out close open and close valve 71 close the valve operation time, the opening degree that carrying out the opening degree that makes expansion valve 18 increases increases operation, this is preferred.If the opening degree of expansion valve 18 is increased, just can guarantee to flow through the flow of cold-producing medium of the unit interval of expansion valve 18, and then the flow to the contributive cold-producing medium that heats that just can suppress to flow through cold-producing medium peripheral passage 1 reduces, and just can suppress the reduction of heating capacity.
(the 1st application examples)
Fig. 2 has represented to adopt the 1st application examples of the 1st embodiment.Identical symbol is paid at the position identical with the 1st embodiment.Should the related air conditioner of use-case be gas engine driving type air conditioner machine.Gas engine driving type air conditioner machine that should use-case is used to carry out indoor refrigeration or heating, has off-premises station 10 and indoor set 16.Off-premises station 10 have as basic building block with the lower part: gas engine (engine) 11, the drive division that drives as burning by fuel gas; Storage heater 12 is deposited the cold-producing medium under the state of the cold-producing medium that is separated into gaseous state and liquid cold-producing medium; Compressor 13 is driven by gas engine 11, sucks, compresses the cold-producing medium of the gaseous state of storage heater 12 along with driving; Outdoor heat converter 14 is as the heat exchanger that carries out the heat exchange of cold-producing medium for air-conditioning; And a plurality of indoor heat converters 17, as the heat exchanger that carries out the heat exchange of cold-producing medium for air-conditioning.Cold-producing medium peripheral passage 1 connects compressor 13, outdoor heat converter 14, indoor heat converter 17 and storage heater 12.
Secondly, the elementary path of the cold-producing medium peripheral passage 1 when illustrating to indoor heating.By means of fuel gas, gas engine 11 drives, and compressor 13 will drive, and the cold-producing medium of the gaseous state of storage heater 12 is inhaled into through path 1x from the inhalation port 12a of storage heater 12, is compressed in the discharge chambe of compressor 13.Be compressed and become the cold-producing medium of HTHP, be discharged to arrow A 1 direction, arrive path 1a, separator 61 from the discharge port 20 of compressor 13.In separator 61 from cold-producing medium separating oil.Then, separated port 62d, the 62c of oily cold-producing medium by four-way valve 62, flow arrows A2 direction, arrow A 3 directions (with reference to Fig. 2), through path 1f, ball valve 65B, path 1e, arrive indoor heat converter 17, in indoor heat converter 17, carry out heat exchange,, heat indoor to the indoor heat of emitting with indoor air.
Then, passed through the cold-producing medium of indoor heat converter 17, expanded, arrived branching portion 19s, be branched off into arrow A 4 directions, arrow A 5 directions at branching portion 19s through path 1d, ball valve 65A by expansion valve 21.Be branched off into the cold-producing medium of arrow A 4 directions, through path 1c, open and close valve (magnetic valve) 71, pass through back only valve 80, capillary 81, arrive outdoor heat converter 14 from port one 4u, port one 4d from outdoor heat converter 14 discharges again, through port 62a, the port 62b of four-way valve 62, return and end valve 72, flow to as the evaporation of double pipe heat exchanger with heat exchanger 67.
Also have, be branched off into the cold-producing medium of arrow A 5 directions, flow through bypass path 19, arrive expansion valve 18, expand, gasified again by expansion valve 18 at branching portion 19s.The cold-producing medium that has passed through expansion valve 18 flows through bypass path 19 again, converges with the cold-producing medium that has passed through outdoor heat converter 14 at fluidic junction 19h.The cold-producing medium that has converged flows in arrow A 6 directions, flows to evaporation with heat exchanger 67.Flow to evaporation with the cold-producing medium of heat exchanger 67, obtain heat, gasified again as the engine cooling water of warm water by heat exchange.The cold-producing medium that has carried out gasification flows in arrow A 7 directions, and that returns storage heater 12 returns port 12c.The cold-producing medium that has returned is deposited under the state of the cold-producing medium that is separated into liquid cold-producing medium and gaseous state by storage heater 12.Carry out indoor heating by such circulation.
Secondly, the elementary path of the cold-producing medium peripheral passage 1 when illustrating to indoor refrigeration.By means of fuel gas, gas engine 11 drives, and compressor 13 will drive, and the cold-producing medium of the gaseous state of storage heater 12 is inhaled into through path 1x from the inhalation port 12a of storage heater 12, is compressed in the discharge chambe of compressor 13.Be compressed and become the cold-producing medium of HTHP, be discharged from, arrive path 1a, separator 61 from the discharge port 20 of compressor 13.In separator 61 from cold-producing medium separating oil.Then, separated oily cold-producing medium by port 62d, the port 62a of process as the four-way valve 62 of cross valve, flow arrows B1 direction in stream 1b arrives outdoor heat converter 14 through port one 4d.Then, the cold-producing medium of HTHP carries out heat exchange with outdoor air and is cooled in outdoor heat converter 14, the i.e. liquefaction of condensing.That is, in the cooling operation, outdoor heat converter 14 comes work as condenser.Carried out the cold-producing medium of liquefaction, in path 1m, flowed,, in path 1d, flowed, in expansion valve 21, expanded and become low temperature in arrow B 3 directions through ball valve 65A in arrow B 2 directions.
Become refrigerant of low temperature and arrive indoor heat converter 17, in indoor heat converter 17, carry out heat exchange with indoor air, cool off indoor, in path 1e, flow again in arrow B 4 directions, through ball valve 65B, in path 1f, flow, through port 62c, the port 62b of four-way valve 62, return and end valve 72, arrive fluidic junction 19h in arrow B 5 directions.Then, cold-producing medium flows in arrow A 6 directions,, flows in arrow A 7 directions in path 1h with heat exchanger 67 through pervaporation, and that returns storage heater 12 returns port 12c.Returning the cold-producing medium of storage heater 12 is deposited under the state of the cold-producing medium that is separated into liquid cold-producing medium and gaseous state by storage heater 12.
In application examples shown in Figure 2, also can obtain and the same action effect of the 1st embodiment example.Promptly, when the temperature of extraneous air is lower than refrigerant temperature during warming operation, outdoor heat converter 14 can not obtain heat fully from extraneous air, thereby not only outdoor heat converter 14 suffers damage as the function of evaporimeter, and, the heat of the cold-producing medium of outdoor heat converter 14 is seized by extraneous air, and heating capacity probably will descend.Therefore, when the temperature of indoor heating when running extraneous air is lower than the temperature of design temperature or the cold-producing medium by outdoor heat converter 14, control device 75 just carry out close open and close valve 71 close the valve operation.Owing to closed open and close valve 71 like this, so the cold-producing medium of upstream side (upstream side during heating) that has suppressed outdoor heat converter 14 is in port one 4u inflow outdoor heat exchanger 14.Also have, return and end valve 72 and suppressed cold-producing mediums in the bypass path 19 flow back to outdoor heat converter 14 from point 19h one side downstream.Therefore, can reduce the amount of the cold-producing medium that flows to outdoor heat converter 14, when the temperature that so just can be suppressed at extraneous air is lower than the temperature of the cold-producing medium that flows through outdoor heat converter 14, the heat of the cold-producing medium of outdoor heat converter 14 is seized by the extraneous air of low temperature and is condensed, and then suppresses the reduction of heating capacity really.
Also have, suppress cold-producing medium inflow outdoor heat exchanger 14, probably can damage in the cold-producing medium peripheral passage 1 flow the contributive cold-producing medium that heats by means of closing of open and close valve 71.For this point, the bypass path 19 that is communicated with cold-producing medium peripheral passage 1 is walked around outdoor heat converter 14 and is set up in parallel with it, cold-producing medium that can not inflow outdoor heat exchanger 14 just can be by the bypass path 19 as other path, thereby can guarantee the flow to the contributive cold-producing medium that heats.On this meaning, also suppressed the reduction of heating capacity.
Also have, carries out and above-mentionedly close the valve operation, because refrigerant flow direction outdoor heat converter 14 has been subjected to inhibition, thereby the flow direction will increase as the flow of the cold-producing medium of the bypass path 19 of other stream.For this point, if control device 75 carry out close open and close valve 71 close the valve operation time, the opening degree that execution increases the opening degree of expansion valve 18 increases operation, so, even under the situation of having closed open and close valve 71, also can suppress to flow through the flow minimizing to the contributive cold-producing medium that heats of cold-producing medium peripheral passage 1, can suppress the reduction of heating capacity.
Fig. 3 represents to be located at evaporation in the cold-producing medium peripheral passage 1 with the path of the engine cooling water 100 that flows through in the heat exchanger 67.As shown in Figure 3, the water coolant circuit 100 that circulates of engine cooling water have the 1st water flowing road 101, flow through evaporation with the 2nd water flowing road 102 of heat exchanger 67, flow through radiator 107 the 3rd water flowing road 103, as temperature transfer the 1st thermostat 104 of element, as the 2nd thermostat 105 of temperature accent element and the water pump 106 that transports portion as cooling water.
The revolution of gas engine 11 increases, and the water temperature of engine cooling water rises, and by the 1st thermostat 104 and 105 effects of the 2nd thermostat, will also flow through in heat exchanger 67 in the 2nd water flowing road 102, evaporation.In this case, the heat of engine cooling water also is evaporated with heat exchanger 67 and seizes, thereby can suppress the excessive high temperatureization of engine cooling water.Gas engine 11 revolutions increase again, the words that the water temperature of engine cooling water rises again, by the effect of the 1st thermostat 104 and the 2nd thermostat 105, engine cooling water will also flow through on the 2nd water flowing road 102 and the 3rd water flowing road 103, also flows through in evaporating with heat exchanger 67 and radiator 107.In this case, the heat of engine cooling water also is evaporated with heat exchanger 67 and radiator 107 and seizes, thereby can suppress the excessive high temperatureization of engine cooling water.So just be made as, by the 1st thermostat 104 with by the effect of the 2nd thermostat 105, the temperature of engine cooling water just is controlled in certain temperature province substantially.
As by as the waste heat of the gas engine 11 of heating source warm water engine cooling water like this in evaporation with flowing in the water passage of heat exchanger 67.Therefore, the cold-producing medium that flows in the refrigerant passage of heat exchanger 67 in evaporation obtains the heat of engine cooling water by heat exchange, and just the heat of the enough engine cooling waters of energy is evaporated the gasification of the cold-producing medium of usefulness heat exchanger 67.
(the 2nd embodiment example)
Fig. 4 represents the notion of the 2nd embodiment example of the present invention.The 2nd embodiment example has and the essentially identical formation of above-mentioned the 1st embodiment example.Below, with the different part of the 1st embodiment example be that the center illustrates.
As shown in Figure 4, be provided with the open and close valve 71 that the upstream side (upstream side during warming operation) to outdoor heat converter 14 opens and closes.And, as shown in Figure 4, outdoor heat converter 14 is provided with bypass path 19 side by side.Bypass path 19 is by the fluidic junction 19h that converges from the branching portion 19s of cold-producing medium peripheral passage 1 branch, with cold-producing medium peripheral passage 1 and be communicated with cold-producing medium peripheral passage 1, walks around outdoor heat converter 14 and cold-producing medium is flow through.
Also have, in cold-producing medium peripheral passage 1,, only valve 72 is housed back in the downstream (downstream during the indoor heating running) of outdoor heat converter 14 and than the part that the point 19h of bypass path 19 leans on upstream side.This time ends valve 72 allows from the flowing of the cold-producing medium of outdoor heat converter 14 1 side direction point 19h one side flow, and blocks flowing from the cold-producing medium of point 19h one side direction outdoor heat converter 14 1 side flow.Also be provided with the control device 75 of the above-mentioned open and close valve 71 of control.
Connect in the bypass path 19 and be provided with expansion valve 18 and evaporation heat exchanger 67 with the function that cold-producing medium is expanded and gasify.Evaporation is plate heat exchangers with heat exchanger 67, have by as the waste heat of the gas engine of heating source the mobile water passage of engine cooling water (medium), and flow through bypass path 19, flow to the refrigerant passage of the flow of refrigerant of storage heater 12.And, make the cold-producing medium of refrigerant passage and the engine cooling water of water passage carry out heat exchange, make the cold-producing medium evaporation that flows to storage heater 12 with the heat of engine cooling water.As shown in Figure 4, outdoor heat exchanger 14 and evaporation are made as position relation arranged side by side mutually with heat exchanger 67.
Situation when below explanation is turned round to indoor heating.By means of fuel gas, gas engine 11 drives, and compressor 13 just drives, and the cold-producing medium of gaseous state is compressed by compressor 13.The cold-producing medium that is compressed and has become HTHP is discharged to arrow A 1 direction from compressor 13, port 62d, 62c by four-way valve 62, flow in arrow A 2 directions, arrow A 3 directions, arrive indoor heat converter 17, in indoor heat converter 17, carry out heat exchange with indoor air, to the indoor heat of emitting, heat indoor.The cold-producing medium that has passed through indoor heat converter 17 condenses and promptly liquefies.
Passed through the cold-producing medium of indoor heat converter 17,, be branched off into arrow A 4 directions and arrow A 5 directions through branching portion 19s.Cold-producing medium in that arrow A 4 directions flow arrives outdoor heat converter 14 through open and close valve from port one 4u.Then, the cold-producing medium of outdoor heat converter 14 obtains the heat of extraneous air, is gasified.Then, cold-producing medium is discharged from the port one 4d of outdoor heat converter 14, port 62a, the 62b by four-way valve 62, returns and ends valve 72, flows to fluidic junction 19h.
Also have, to the mobile cold-producing medium of arrow A 5 directions (with reference to Fig. 4), flow through bypass path 19, arrive expansion valve 18, expand and gasify by expansion valve 18 from branching portion 19s.The cold-producing medium that has passed through expansion valve 18 flows through evaporation heat exchanger 67 again.This evaporation is formed by heat-exchangers of the plate type with heat exchanger 67.Evaporation is carried out heat exchange with the cold-producing medium in the heat exchanger 67 by the engine cooling water as warm water and is gasified.Having passed through the cold-producing medium that evaporates with heat exchanger 67 converges with the cold-producing medium that has passed through outdoor heat converter 14 at fluidic junction 19h again.The cold-producing medium that has converged flows in arrow A 6, A7 direction, returns storage heater 12.
The 2nd embodiment example has and the identical action effect of the 1st embodiment example substantially.That is, when the temperature of extraneous air was lower than design temperature during warming operation, outdoor heat converter 14 can not obtain heat fully from extraneous air.Thereby not only outdoor heat converter 14 suffers damage as the function of evaporimeter, and the heat of the cold-producing medium of outdoor heat converter 14 is seized by extraneous air, and heating capacity probably will descend.
Therefore, according to present embodiment, when the temperature of extraneous air is lower than design temperature during warming operation, with above-mentioned identical, control device 75 just carry out close open and close valve 71 close the valve operation.Owing to closed open and close valve 71 like this, so the cold-producing medium of upstream side that has suppressed outdoor heat converter 14 is in port one 4u inflow outdoor heat exchanger 14.Also have, return and end cold-producing medium that valve 72 suppressed bypass path 19 flows back to outdoor heat converter 14 from point 19h one side downstream.Therefore, can reduce the amount of the cold-producing medium that flows to outdoor heat converter 14, so just can be suppressed at the temperature of extraneous air when low, the heat of the cold-producing medium of outdoor heat converter 14 is seized by the extraneous air of low temperature, and then suppresses the reduction of heating capacity really.
Also have, suppress the cold-producing medium inflow outdoor heat exchanger 14 of the upstream side of outdoor heat converter 14 by means of closing of open and close valve 71, probably will damage flow the contributive cold-producing medium that heats.For this point,, be set up in parallel the bypass path 19 that is communicated with cold-producing medium peripheral passage 1 with outdoor heat converter 14 according to present embodiment.Like this, the cold-producing medium that can not flow into outdoor heat converter 14 just can pass through bypass path 19 along arrow A 5 directions, thereby can guarantee the flow to the contributive cold-producing medium that heats.On this meaning, also suppressed the reduction of heating capacity.
Carry out the above-mentioned valve operation of closing, because refrigerant flow direction outdoor heat converter 14 has been subjected to inhibition, thereby the flow that flows to as the cold-producing medium of the bypass path 19 of other stream will increase.For this point, according to present embodiment, preferably, control device 75 carry out close open and close valve 71 close the valve operation time, the opening degree that carrying out the opening degree that makes expansion valve 18 increases increases operation.If the opening degree of expansion valve 18 is increased, just can suppress the flow of the contributive cold-producing medium that heats is reduced, can suppress the reduction of heating capacity.
(the 2nd application examples)
Fig. 5 has represented to adopt the 2nd application examples of the 2nd embodiment example.The 2nd application examples has the formation common with the 1st application examples.Identical symbol is paid at the position identical with the 2nd application examples.As shown in Figure 5, be provided with the open and close valve 71 that the upstream side (upstream side during warming operation) to outdoor heat converter 14 opens and closes.In should use-case, as shown in Figure 5, outdoor heat converter 14 be formed by outdoor heat converter 14A, the 14B of a plurality of configurations arranged side by side.Therefore, open and close valve 71 can together carry out open and close controlling to outdoor heat exchanger 14A, the 14B of a plurality of configurations arranged side by side.Again as shown in Figure 5, outdoor heat converter 14 is provided with bypass path 19 side by side, bypass path 19 is by the fluidic junction 19h that converges from the branching portion 19s of cold-producing medium peripheral passage 1 branch, with cold-producing medium peripheral passage 1 and be communicated with cold-producing medium peripheral passage 1, walks around outdoor heat converter 14 and cold-producing medium is flow through.Connect in the bypass path 19 and be provided with expansion valve 18 and evaporation heat exchanger 67 with the function that cold-producing medium is expanded and gasify.Evaporation makes cold-producing medium and engine cooling water carry out heat exchange with heat exchanger 67, makes the cold-producing medium evaporation that flows to storage heater 12.Evaporation is not a double pipe heat exchanger with heat exchanger 67, but plate heat exchanger.As shown in Figure 5, outdoor heat converter 14 and evaporation are made as position relation arranged side by side with heat exchanger 67.
According to present embodiment, the carrying out of warming operation and cooling operation, basic identical with the situation of above-mentioned application examples 1.Situation for warming operation when indoor is illustrated.By means of fuel gas, the words that gas engine 11 drives, compressor 13 will drive, and the cold-producing medium of gaseous state is compressed by compressor 13, and the cold-producing medium that has become HTHP just is discharged to arrow A 1 direction from compressor 13, port 62d, 62c by separator 61, four-way valve 62, flow in arrow A 2 directions, arrow A 3 directions, arrive indoor heat converter 17, in indoor heat converter 17, carry out heat exchange with indoor air, to the indoor heat of emitting, heat indoor.
Passed through the cold-producing medium of indoor heat converter 17, arrived expansion valve 21, ball valve 65A, be branched off into arrow A 4 directions and arrow A 5 directions (with reference to Fig. 5) by branching portion 19s.The cold-producing medium that flows in arrow A 4 directions through open and close valve 71, return and end valve 80, capillary 81, arrives outdoor heat converter 14 (14A, 14B) from port one 4u.Then, the cold-producing medium of outdoor heat converter 14 (14A, 14B) obtains the heat of extraneous air and is gasified.Then, cold-producing medium is through outdoor heat converter 14 (14A, 14B), and port 62a, 62b by four-way valve 62 flow to fluidic junction 19h.
Also have, the cold-producing medium from branching portion 19s flow arrows A5 direction flows through bypass path 19, arrives expansion valve 18, expands through expansion valve 18, is gasified, and then, has passed through the refrigerant flow direction evaporation heat exchanger 67 of expansion valve 18.Evaporation is carried out heat exchange with the cold-producing medium in the heat exchanger 67 and as the engine cooling water of warm water, is gasified.Then, having passed through the cold-producing medium that evaporates with heat exchanger 67 converges with the cold-producing medium that has passed through outdoor heat converter 14 (14A, 14B) at fluidic junction 19h.The cold-producing medium that has converged flows in arrow A 6 directions, arrow A 7 directions, and that returns storage heater 12 returns port 12c.
In the 2nd application examples, also can obtain the action effect identical substantially with the 1st application examples.Promptly, when the temperature of extraneous air is lower than refrigerant temperature during the indoor heating running, outdoor heat converter 14 just can not obtain heat fully from extraneous air, not only outdoor heat converter 14 suffers damage as the function of evaporimeter, and, the heat of the cold-producing medium of outdoor heat converter 14 is seized by extraneous air, and heating capacity probably will descend.Therefore, the same when the temperature of the extraneous air when indoor heating turns round is lower than the temperature of design temperature or the cold-producing medium by outdoor heat converter 14 according to present embodiment with above-mentioned situation, control device 75 just carry out close open and close valve 71 close the valve operation.Therefore, the heat that just can suppress the cold-producing medium of the cold-producing medium minimizing of outdoor heat converter 14 or disappearance, outdoor heat converter 14 is seized by extraneous air, and then when the temperature of extraneous air is lower than the refrigerant temperature that flows through outdoor heat converter 14, also can suppress the reduction of heating capacity really.
(other)
According to above-mentioned embodiment 1,2, application examples 1,2, as the heating source that evaporation is heated with the cold-producing medium of heat exchanger 67, be made as the gas engine 11 that drives with fuel gas, but be not limited thereto, it is also passable to be made as the engine that drives with liquid fuels such as gasoline or diesel oil, can also be made as the engine that drives with other fuel, can also adopt boiler, fuel cell, gas turbine, the heat that generates with boiler, fuel cell, gas turbine adds hot water, with warmed-up warm water the cold-producing medium of evaporation with heat exchanger 67 is heated.In addition, the invention is not restricted to the foregoing description, within the scope of its main idea, can suitably change and implement.
Claims (4)
1. air conditioner has:
Compressor is used for compressed refrigerant;
Indoor heat converter is located at indoorly, and the cold-producing medium of the high temperature of discharging from this compressor during warming operation is by wherein, carries out heat exchange with indoor air, thereby to indoor heating;
Outdoor heat converter is located at outdoorly, and the cold-producing medium and the extraneous air that have passed through above-mentioned indoor heat converter when making warming operation carry out heat exchange, makes the cold-producing medium evaporation;
The cold-producing medium peripheral passage is used to connect above-mentioned compressor, above-mentioned indoor heat converter and above-mentioned outdoor heat converter;
The bypass path, the mode of walking around above-mentioned outdoor heat converter by the cold-producing medium in the above-mentioned cold-producing medium peripheral passage is connected with above-mentioned cold-producing medium peripheral passage; And
Heat exchanger use in evaporation, is located in above-mentioned bypass path or the above-mentioned cold-producing medium peripheral passage, make to flow through above-mentioned bypass path or above-mentioned cold-producing medium peripheral passage, flow to the cold-producing medium of above-mentioned compressor and the medium that provides from heating source carries out heat exchange and evaporates,
It is characterized in that having:
Open and close valve, when being located at warming operation in the above-mentioned cold-producing medium peripheral passage of the upstream side of above-mentioned outdoor heat converter than the part of above-mentioned bypass forehearth limb part by the downstream;
Return and end valve, the part of converging than above-mentioned bypass path in the above-mentioned cold-producing medium peripheral passage in the downstream of above-mentioned outdoor heat converter when being located at warming operation is by the part of upstream side, allow cold-producing medium circulation to above-mentioned bypass path, stop cold-producing medium from of the circulation of above-mentioned bypass path to the above-mentioned cold-producing medium peripheral passage in the downstream of above-mentioned outdoor heat converter from the above-mentioned cold-producing medium peripheral passage in the downstream of above-mentioned outdoor heat converter; And
Control device when the temperature of extraneous air is lower than design temperature during warming operation, carries out the valve that closes of cutting out above-mentioned open and close valve and operates.
2. air conditioner according to claim 1 is characterized in that,
In above-mentioned bypass path, be provided with and make cold-producing medium expansion and the adjustable expansion valve of opening degree,
Above-mentioned control device is made as in execution and cuts out closing valve when operation of above-mentioned open and close valve, and the opening degree that can carry out the opening degree that makes above-mentioned expansion valve increases increases operation.
3. air conditioner according to claim 2 is characterized in that,
Above-mentioned evaporation is located in the above-mentioned bypass path with above-mentioned expansion valve with heat exchanger,
Above-mentioned control device is made as when the opening degree that makes above-mentioned expansion valve increases, and can carry out to make from above-mentioned heating source increases operation to the heat that the heat of the unit interval that above-mentioned evaporation provides with heat exchanger increases.
4. according to any described air conditioner in the claim 1～3, it is characterized in that,
Above-mentioned heating source is any one in engine, boiler, fuel cell, the gas turbine, the medium that provides from above-mentioned heating source be by above-mentioned heating source heat, main component is the liquid medium of water.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004100345A JP4561147B2 (en) | 2004-03-30 | 2004-03-30 | Air conditioner |
| JP2004100345 | 2004-03-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1677025A CN1677025A (en) | 2005-10-05 |
| CN100520232C true CN100520232C (en) | 2009-07-29 |
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ID=35049685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100625013A Expired - Fee Related CN100520232C (en) | 2004-03-30 | 2005-03-30 | Air conditioner |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4561147B2 (en) |
| KR (1) | KR100612808B1 (en) |
| CN (1) | CN100520232C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4978777B2 (en) * | 2007-03-15 | 2012-07-18 | アイシン精機株式会社 | Refrigeration cycle equipment |
| JP6103181B2 (en) * | 2012-09-26 | 2017-03-29 | アイシン精機株式会社 | Engine-driven air conditioner |
| CN103090590B (en) * | 2012-12-10 | 2016-04-13 | 武汉凯龙技术开发有限责任公司 | Gas engine-driven air screw source heat pump refrigerating and heating unit |
| JP6641791B2 (en) | 2015-08-27 | 2020-02-05 | アイシン精機株式会社 | Engine driven air conditioner |
| CN109827353A (en) * | 2018-12-25 | 2019-05-31 | 珠海格力电器股份有限公司 | Air conditioning system |
| JP2021156441A (en) * | 2020-03-25 | 2021-10-07 | ヤンマーパワーテクノロジー株式会社 | heat pump |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2605708B2 (en) * | 1987-03-31 | 1997-04-30 | アイシン精機株式会社 | Engine driven air conditioner |
| JP3384614B2 (en) * | 1994-05-31 | 2003-03-10 | 三洋電機株式会社 | Air conditioner |
| JPH0849942A (en) * | 1994-08-08 | 1996-02-20 | Yamaha Motor Co Ltd | Engine driven heat pump equipment |
| JPH08271086A (en) * | 1995-03-31 | 1996-10-18 | Yamaha Motor Co Ltd | Heat pump apparatus |
| JP3326322B2 (en) * | 1996-02-09 | 2002-09-24 | 三洋電機株式会社 | Air conditioner and air conditioner system equipped with this air conditioner |
| JPH10170095A (en) * | 1996-12-10 | 1998-06-26 | Denso Corp | Engine driven heat pump |
| JPH1122551A (en) * | 1997-07-01 | 1999-01-26 | Yanmar Diesel Engine Co Ltd | Engine-driven heat pump device |
-
2004
- 2004-03-30 JP JP2004100345A patent/JP4561147B2/en not_active Expired - Fee Related
-
2005
- 2005-03-29 KR KR1020050025715A patent/KR100612808B1/en not_active Expired - Fee Related
- 2005-03-30 CN CNB2005100625013A patent/CN100520232C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005283025A (en) | 2005-10-13 |
| JP4561147B2 (en) | 2010-10-13 |
| CN1677025A (en) | 2005-10-05 |
| KR20060044876A (en) | 2006-05-16 |
| KR100612808B1 (en) | 2006-08-21 |
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