CN102753915A - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
CN102753915A
CN102753915A CN2010800634971A CN201080063497A CN102753915A CN 102753915 A CN102753915 A CN 102753915A CN 2010800634971 A CN2010800634971 A CN 2010800634971A CN 201080063497 A CN201080063497 A CN 201080063497A CN 102753915 A CN102753915 A CN 102753915A
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China
Prior art keywords
heat exchanger
mentioned
utilize
side heat
circulation
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Granted
Application number
CN2010800634971A
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Chinese (zh)
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CN102753915B (en
Inventor
小松智弘
小谷正直
内田麻理
高藤亮一
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Hitachi Ltd
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Hitachi Ltd
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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
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0003—Exclusively-fluid systems
    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • 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
    • 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
    • F25B2313/02742—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using two four-way valves

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

In order to exert cooling and heating abilities using a natural circulation cycle heat exchanger as the heat exchanger of a pressure cycle, the disclosed air conditioner has a configuration that can form at least three refrigeration cycles: a natural circulation cycle (TS1) formed in a loop by sequentially connecting with pipework a first heat-source-side heat exchanger (4), a first expansion valve (5), and a first use-side heat exchanger (6); a first pressure cycle (PC1) formed in a loop by sequentially connecting with pipework the discharge port (1b) of a compressor (1), a duct switching valve (2), a second heat-source-side heat exchanger (7), a second expansion valve (9), a second use-side heat exchanger (8), and the intake port (1a) of the compressor; and a second pressure cycle (PC2) formed in a loop by sequentially connecting with pipework the discharge port (1b) of the compressor, the duct switching valve (2), the second heat-source-side heat exchanger (7), the first heat-source-side heat exchanger (4), the first expansion valve (5), the first use-side heat exchanger (6), the second use-side heat exchanger (8), and the intake port (1a) of the compressor.

Description

Aircondition
Technical field
The present invention relates to be arranged on the aircondition on for example dwelling house or the office building etc.; Relate in particular to the compression circulation that cold-producing medium utilizes density contrast to carry out the natural recirculating type circulation of Natural Circulation and utilize compressor that cold-producing medium is circulated is set in the lump, and can use the aircondition of these two freeze cycle respectively.
Background technology
Prior art as two freeze cycle using natural recirculating type circulation and compression circulation respectively; For example in patent documentation 1, disclose following technology: for cool off the air in the casing, be provided with in the lump utilize refrigerant piping connect successively compressor, again heat with condenser, and cooler and the freeze cycle (compression circulation) that forms with utilize the pipe arrangement that freezes to be connected Natural Circulation to cool off with condenser and Natural Circulation and cool off the Natural Circulation cooling device (natural recirculating type circulation) that forms with cooler.If utilize this patent documentation 1, then can utilize the air in Natural Circulation cooling device (natural recirculating type circulation) the cooling casing, therefore can reduce the cooling burden of utilizing freeze cycle (compression circulation).Thus, the technology according to patent documentation 1 record can reduce power consumption, can suppress lowlyer by the operating cost that cooling system is whole.
In addition, in patent documentation 2, disclose and possess indoor heat converter, outdoor heat converter, refrigerant piping, expansion valve, be equivalent to the cold-producing medium Natural Circulation cooling and dehumidifying device of cold-producing medium compression forced circulation device of the compression refrigerator of other devices.This cold-producing medium Natural Circulation cooling and dehumidifying device has and utilizes refrigerant piping that outdoor heat converter, the indoor heat converter, the expansion valve that are positioned at the position lower than this outdoor heat converter are connected into ring-type and natural recirculating type circulation that forms and the compression circulation that utilizes cold-producing medium compression forced circulation device, the structure of the outdoor heat converter driving fit that circulates for the evaporation heat-exchanger and the natural recirculating type of compression circulation.According to this structure; Because evaporation heat-exchanger can absorb heat from outdoor heat converter effectively; Make the occasion of cooling and dehumidifying ability drop even therefore do not have the temperature difference of indoor and outdoors; Through making the work of cold-producing medium compression forced circulation device, can remedy the decline of the cooling and dehumidifying ability of cold-producing medium Natural Circulation cooling and dehumidifying device.
In addition, patent documentation 2 discloses the aircondition that the cold-producing medium Natural Circulation cooling and dehumidifying device (natural recirculating type circulation) that uses the cold-producing medium Natural Circulation is set in the lump on the cold-producing medium compression forced circulation changes in temperature gas dual-purpose apparatus (compression circulation) that use cold-producing medium compression forced circulation system.According to this aircondition, can under the state that utilizes cold-producing medium Natural Circulation cooling and dehumidifying device to dehumidify, utilize cold-producing medium compression forced circulation changes in temperature gas dual-purpose apparatus to carry out the such high dry operating pattern of quality of heating installation, can improve adaptability.
The prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2003-121072 communique
Patent documentation 2: japanese kokai publication hei 10-300128 communique
Summary of the invention
Invent problem to be solved
But, in above-mentioned existing technology, owing to all constitute natural recirculating type circulation and the compression independently freeze cycle that circulates, therefore can't be with the heat exchanger utilization as the compression circulation such as when the peak value of changes in temperature gas of the heat exchanger of natural recirculating type circulation.Therefore, existence can't be used the problem of hot-swap feature and so on of the heat exchanger of natural recirculating type circulation effectively.
In addition; The natural recirculating type circulation is between two heat exchangers, drop to be set; Therefore the circulation that cold-producing medium utilizes density contrast to circulate naturally is the occasion below the indoor temperature in ambient temperature, in the difference of ambient temperature and indoor temperature hour; Even utilize the cold air operation of natural recirculating type circulation, also there is the problem that can't obtain dehumidifying effect and so on.
The present invention accomplishes in view of above-mentioned actual conditions; Its purpose is; In the aircondition that compression circulation and natural recirculating type circulation are set in the lump, the heat exchanger utilization that the heat exchanger of natural recirculating type circulation is circulated as compression and bring into play changes in temperature gas ability.In addition, the object of the present invention is to provide aircondition, is the occasion below the indoor temperature in ambient temperature, circulates through utilizing natural recirculating type circulation and compression in the lump, even the difference of ambient temperature and indoor temperature hour also can improve dehumidifying effect.
Be used to solve the method for problem
To achieve these goals; First and second heat source side heat exchanger that aircondition of the present invention possesses compressor, carry out heat exchange to the heat transmission medium and the cold-producing medium of heat source side, the heat transmission medium that utilizes side and cold-producing medium are carried out heat exchange first and second utilize the side heat exchanger, switch flow channel switching valve and first and second expansion valve of the runner direction of cold-producing medium; Can form following three freeze cycle at least: utilize refrigerant piping to connect the above-mentioned first heat source side heat exchanger, above-mentioned first expansion valve successively and be arranged on above-mentioned first of the position lower than the above-mentioned first heat source side heat exchanger and utilize the side heat exchanger and form ring-type, cold-producing medium utilizes density contrast to carry out the natural recirculating type circulation of Natural Circulation; Utilize refrigerant piping to connect the outlet of above-mentioned compressor, above-mentioned flow channel switching valve, the above-mentioned second heat source side heat exchanger, above-mentioned second expansion valve, above-mentioned second successively and utilize the suction inlet of side heat exchanger and above-mentioned compressor and form ring-type, cold-producing medium utilizes first compression circulation of above-mentioned compressor forced circulation; And utilize refrigerant piping to connect the outlet of above-mentioned compressor, above-mentioned flow channel switching valve, the above-mentioned second heat source side heat exchanger, the above-mentioned first heat source side heat exchanger, above-mentioned first expansion valve, above-mentioned first successively and utilize side heat exchanger, above-mentioned second to utilize the suction inlet of side heat exchanger and above-mentioned compressor and form ring-type; Cold-producing medium utilizes second compression circulation of above-mentioned compressor forced circulation, possesses the circulation switching mechanism that between second state that first state that above-mentioned natural recirculating type circulation and the circulation of above-mentioned first compression form independently and above-mentioned second compression of formation circulate, freeze cycle is switched.
According to the present invention; If the operation cycle switching mechanism also switches to the circulation of second compression; Therefore the heat exchanger utilization that then can the heat exchanger of natural recirculating type circulation be circulated as second compression can improve changes in temperature gas ability, especially can when changes in temperature gas peak value, bring into play bigger effect.
In addition; The present invention is in said structure; It is characterized in that; With utilize the side heat transmission medium with pipe arrangement connect successively above-mentioned first utilize side heat exchanger, above-mentioned second to utilize the side heat exchanger and be arranged on the indoor heat converter in the space that is cooled and form ring-type utilize side heat transmission medium closed circuit, make by the strong hand as the above-mentioned water of side heat transmission medium or the salt solution of utilizing and circulate above-mentioned the utilization in the side heat transmission medium closed circuit.
According to the present invention; Owing to constitute to be provided with and utilize side heat transmission medium closed circuit; Indoor heat converter through being arranged on the space that is cooled carries out changes in temperature adjusting etc. to the air in the space that is cooled; Therefore, do not need as existing, to connect the refrigerant piping of indoor set and off-premises station, and refrigerant amount is few.In addition, utilizing refrigerant piping to connect in the structure of existing indoor set and off-premises station, the occasion forming the natural recirculating type circulation need be arranged on the position higher than indoor set, the restriction with layout with off-premises station.But, according to the present invention, be that the structure of utilizing side heat transmission medium closed circuit is set, therefore have the advantage of the free degree increase of layout.
In addition; The present invention is in said structure; It is characterized in that; Utilize the side heat exchanger to be divided into two to be first to cut apart heat exchanger and second and cut apart heat exchanger with above-mentioned second, cut apart binding that heat exchanger and above-mentioned second cuts apart heat exchanger and the 3rd expansion valve is set on refrigerant piping connecting above-mentioned first.
According to the present invention, utilize first to cut apart heat exchanger, second and cut apart heat exchanger and the 3rd expansion valve, while can carry out making the warm dehumidifying of heat again that dehumidifies of air in the space that is cooled to turn round.And, owing to can use natural recirculating type circulation and the circulation of first compression in the lump, so be the occasion below the indoor temperature, even the difference of ambient temperature and indoor temperature hour also can improve dehumidifying effect in ambient temperature.And, the advantage that the control range that also has temperature, humidity broadens and so on.
In addition; The present invention is in said structure; It is characterized in that; Utilize the heat source side heat transmission medium to connect above-mentioned second heat source side heat exchanger and heat storage container and form the heat source side heat transmission medium closed circuit of ring-type, the water as the heat transmission medium of above-mentioned heat source side is circulated in above-mentioned heat source side heat transmission medium closed circuit with pipe arrangement.
According to the present invention,, therefore, raise the efficiency through being used to supply with hot water etc. by middle warm water owing to can utilize the heat extraction of heat source side heat exchanger to process middle warm water.In addition, in the present invention, owing to can utilize heat storage container that accumulation of heat is carried out in the heat extraction of heat source side heat exchanger, therefore can eliminate different that for example air conditioner load and the time of supplying with the hot water load be with.
In addition; According to the present invention; In said structure; It is characterized in that, utilize to supply with hot water with refrigerant piping connect successively supply with hot water with compressor, supply with hot water with utilizing side heat exchanger, supply hot water to form the supply hot water circuit of ring-type with expansion valve and the above-mentioned second heat source side heat exchanger, utilize above-mentioned supply hot water the supply hot water as above-mentioned heat source side heat transmission medium to be circulated in above-mentioned supply hot water circuit with cold-producing medium with compressor.
According to the present invention, can produce the temperature warm water higher than middle warm water.
In addition; The present invention is in said structure; It is characterized in that, be provided with the bypass pipe arrangement of the suction inlet that makes above-mentioned compressor and outlet bypass and the runner of cold-producing medium is switched to via the runner of above-mentioned compressor and bypass switching mechanism via any runner of the runner of above-mentioned bypass pipe arrangement.
According to the present invention, use two heat source side heat exchangers and two natural recirculating type circulations that utilize the side heat exchanger owing to can form, therefore can utilize the running of the high natural recirculating type circulation of the efficient of heat exchange, can realize saving cost.
The invention effect
According to the present invention; Because therefore the heat exchanger utilization that can the heat exchanger of natural recirculating type circulation be circulated as compression is compared with the heat exchanger that only utilizes the compression circulation, it is big that the heat-conducting area of heat exchanger becomes; Improve heat exchanger effectiveness, can realize saving energy.In addition, owing to can use natural recirculating type circulation and compression circulation in the lump, so be the occasion below the indoor temperature, even the temperature difference of outdoor temperature and indoor temperature hour also can improve dehumidifying effect in ambient temperature.
Description of drawings
Fig. 1 is that expression constitutes each structural element of the routine aircondition of first embodiment of the present invention and the basic block diagram of their annexation.
Fig. 2 is the mobile action diagram of cold-producing medium and heat transmission medium of operation mode No.1 of the aircondition of expression first embodiment of the present invention example.
Fig. 3 is the mobile action diagram of cold-producing medium and heat transmission medium of operation mode No.2 of the aircondition of expression first embodiment of the present invention example.
Fig. 4 is the mobile action diagram of cold-producing medium and heat transmission medium of operation mode No.3 of the aircondition of expression first embodiment of the present invention example.
Fig. 5 is the mobile action diagram of cold-producing medium and heat transmission medium of operation mode No.4 of the aircondition of expression first embodiment of the present invention example.
Fig. 6 is that expression constitutes each structural element of the routine aircondition of second embodiment of the present invention and the basic block diagram of their annexation.
Fig. 7 is the mobile action diagram of cold-producing medium and heat transmission medium of operation mode No.5 of the aircondition of expression second embodiment of the present invention example.
Fig. 8 is that expression constitutes each structural element of the routine aircondition of the 3rd embodiment of the present invention and the basic block diagram of their annexation.
Fig. 9 is the mobile action diagram of cold-producing medium and heat transmission medium of operation mode No.6 of the aircondition of expression the 3rd embodiment of the present invention example.
Figure 10 is the mobile action diagram of cold-producing medium and heat transmission medium of operation mode No.7 of the aircondition of expression the 3rd embodiment of the present invention example.
Figure 11 is the mobile action diagram of cold-producing medium and heat transmission medium of operation mode No.8 of the aircondition of expression the 3rd embodiment of the present invention example.
Figure 12 is the mobile action diagram of cold-producing medium and heat transmission medium of operation mode No.9 of the aircondition of expression the 3rd embodiment of the present invention example.
Figure 13 is the mobile action diagram of cold-producing medium and heat transmission medium of operation mode No.10 of the aircondition of expression the 3rd embodiment of the present invention example.
Figure 14 is the mobile action diagram of cold-producing medium and heat transmission medium of operation mode No.11 of the aircondition of expression the 3rd embodiment of the present invention example.
Figure 15 is that expression constitutes each structural element of the routine aircondition of the 4th embodiment of the present invention and the basic block diagram of their annexation.
The specific embodiment
(first embodiment of the present invention)
Use Fig. 1～Fig. 5 that structure, function and the action of the aircondition of first embodiment of the present invention are described.In addition, the arrow that heat exchanger marked among Fig. 2～Fig. 5 is represented flowing of heat.In Fig. 1; The volume-variable formula compressor that 1 expression cold-producing medium is used; 2 expression compression circulations are with cubic valve (transfer valve flows); 3 expression circulations are switched with cubic valve (circulation switching mechanism), the first heat source side heat exchanger that 4 expressions are carried out heat exchange to atmosphere (heat transmission medium of heat source side) and cold-producing medium, 5 expressions, first expansion valve; 6 expressions are carried out first of heat exchange to water (utilizing the heat transmission medium of side) and cold-producing medium and are utilized the side heat exchanger; The second heat source side heat exchanger that 7 expressions are carried out heat exchange to atmosphere (heat transmission medium of heat source side) and cold-producing medium, 8 expressions second utilize the side heat exchanger, 9 expressions, second expansion valve to what water (utilizing the heat transmission medium of side) and cold-producing medium exchanged.In addition, first utilize side heat exchanger 6 to be arranged on the position lower than the first heat source side heat exchanger 4.That is, first utilize the side heat exchanger 6 and the first heat source side heat exchanger 4 to be provided with drop.In addition, in this embodiment, use R410A as cold-producing medium.
Natural recirculating type circulation TS1 utilizes refrigerant piping 14 to connect the first heat source side heat exchanger 4 and first expansion valve 5; Utilize refrigerant piping 15 to connect first expansion valve 5 and first and utilize side heat exchanger 6; Utilize refrigerant piping 16 to connect first and utilize side heat exchanger 6 and circulation to switch, utilize refrigerant piping 13 to connect the circulation switching forms ring-type with cubic valve 3 and the first heat source side heat exchanger 4 freeze cycle with cubic valve 3.And cold-producing medium utilizes density contrast in this natural recirculating type circulation, to carry out Natural Circulation.
The first compression cycle P C1 is that the outlet 1b and the compression that utilize refrigerant piping 10 to connect compressor 1 circulate with cubic valve 2; Utilize refrigerant piping 11 to connect the compression circulation with the cubic valve 2 and the second heat source side heat exchanger 7; Utilizing refrigerant piping 12 to connect the second heat source side heat exchanger 7 switches with cubic valve 3 with circulation; Utilizing refrigerant piping 17 to connect circulation switches with the cubic valve 3 and second expansion valve 9; Utilize refrigerant piping 18 to connect second expansion valve 9 and second and utilize side heat exchanger 8; Utilize refrigerant piping 19 to connect second and utilize side heat exchanger 8 and compression to circulate, utilize refrigerant piping 20 to connect the compressions circulation forms ring-type with the suction inlet 1a of compressor 1 with cubic valve 2 freeze cycle with cubic valve 2.And, utilize compressor 1 that cold-producing medium is circulated in the first compression cycle P C1.
The second compression cycle P C2 is that the outlet 1b and the compression that utilize refrigerant piping 10 to connect compressor 1 circulate with cubic valve 2; Utilize refrigerant piping 11 to connect the compression circulation with the cubic valve 2 and the second heat source side heat exchanger 7; Utilizing refrigerant piping 12 to connect the second heat source side heat exchanger 7 switches with cubic valve 3 with circulation; Utilizing refrigerant piping 13 to connect circulation switches with the cubic valve 3 and the first heat source side heat exchanger 4; Utilize refrigerant piping 14 to connect the first heat source side heat exchanger 4 and first expansion valve 5; Utilize refrigerant piping 15 to connect first expansion valve 5 and first and utilize side heat exchanger 6; Utilize refrigerant piping 16 to connect first and utilize side heat exchanger 6 and circulation to switch, utilize refrigerant piping 17 to connect circulation and switch, utilize refrigerant piping 18 to connect second expansion valve 9 and second and utilize side heat exchanger 8 with the cubic valve 3 and second expansion valve 9 with cubic valve 3; Utilize refrigerant piping 19 to connect second and utilize side heat exchanger 8 and compression to circulate, utilize refrigerant piping 20 to connect the compressions circulation forms ring-type with the suction inlet 1a of compressor 1 with cubic valve 2 freeze cycle with cubic valve 2.And, utilize compressor 1 that cold-producing medium is circulated in the second compression cycle P C2.
The switching of the circulation between natural recirculating type circulation TS1, the first compression cycle P C1 and the second compression cycle P C2 is switched by circulation and is carried out with the operation of cubic valve 3.If illustrate in greater detail; Then operation cycle is switched with cubic valve 3; If refrigerant piping 13 is communicated with refrigerant piping 16; And first state that refrigerant piping 12 is communicated with refrigerant piping 17 then forms independently freeze cycle of these two of the natural recirculating type circulation TS1 and the first compression cycle P C1.That is, form natural recirculating type circulation TS1 and these two freeze cycle of the first compression cycle P C1 simultaneously.With respect to this, operation cycle is switched with cubic valve 3, if refrigerant piping 12 is communicated with refrigerant piping 13, and second state that is communicated with refrigerant piping 17 of refrigerant piping 16, then only form the second compression cycle P C2.Like this; The aircondition of first embodiment example switches with cubic valve 4 through operation cycle, can process the state that can utilize the natural recirculating type circulation TS1 and the first compression cycle P C1 simultaneously and these two states of state that can only utilize the second compression cycle P C2.
In addition, 30 expression dwelling houses, 31 expressions are arranged on the indoor heat converter of indoor (space is cooled) of dwelling house, 32 expression circulating pumps, cubic valve is used in the cold warm water of 33 expressions loop.Cold warm water closed circuit (utilizing side heat transmission medium closed circuit) CW utilizes cold warm water pipe arrangement (utilizing the side heat transmission medium to use pipe arrangement) 35 to connect indoor heat converter 31 and circulating pump 32; Utilize cold warm water pipe arrangement 36 connection circulating pumps 32 and cold warm water loop with cubic valve 33; Utilize cold warm water pipe arrangement 37 to connect cold warm water loop and utilize side heat exchanger 8 with cubic valve 33 and second; Utilizing cold warm water pipe arrangement 38 to connect second utilizes side heat exchanger 8 and first to utilize side heat exchanger 6; Utilize cold warm water pipe arrangement 39 to connect first and utilize side heat exchanger 6 and cold warm water loop, utilize cold warm water pipe arrangement 40 to connect cold warm water loop forms ring-type with indoor heat converter 31 with cubic valve 33 loop with cubic valve 33.And, water is circulated in cold warm water closed circuit CW.
Then, the operation mode that the aircondition that utilizes first embodiment example is carried out describes.In the aircondition of first embodiment example, shown in following, can carry out four operation modes of operation mode No.1～No.4.In addition, in following explanation, hs is the abbreviation of heat source, and app is the abbreviation of application, and H is the abbreviation of Humidity.
(operation mode No.1 (Fig. 2))
Operation mode No.1 is a pattern of utilizing the cold air operation of the second compression cycle P C2 separately, is outside air temperature height and the big employed operation modes of occasion of cold air load such as daytime in summer.This operation mode No.1 is at " outdoor temperature Ths-design temperature Tuser >=0 " and " indoor temperature Tapp-design temperature Tuser >=0 ", for example outdoor temperature Ths=35 ℃; Design temperature Tuser=23 ℃, the employed pattern of indoor temperature Tapp=27 ℃ occasion.In addition, in this operation mode No.1, the circulating path of cold-producing medium is the direction of arrow of Fig. 2.
In this operation mode, at first, utilize the compression circulation with cubic valve 2, refrigerant piping 10 is communicated with refrigerant piping 11, and refrigerant piping 19 is communicated with refrigerant piping 20.In addition, utilize circulation to switch with cubic valve 3, refrigerant piping 12 is communicated with refrigerant piping 13, and refrigerant piping 16 is communicated with refrigerant piping 17.Like this, switch with cubic valve 3 with cubic valve 2 and circulation, form the second compression cycle P C2 through switching the compression circulation.At this, in operation mode No.1, first expansion valve 5 is adjusted into the aperture of regulation, and second expansion valve 9 is for all opening.
The gas refrigerant of the HTHP of discharging from the outlet 1b of compressor flows into the second heat source side heat exchanger 7 through the compression circulation with cubic valve 2, in this second heat source side heat exchanger 7, dispels the heat and condenses to atmosphere between flow periods.In addition, the cold-producing medium that flows out at the second heat source side heat exchanger 7 switches with cubic valve 3 through circulation and flows into the first heat source side heat exchanger 4, in this first heat source side heat exchanger 4 between flow periods to the atmosphere heat radiation and condense, finally liquefy.The cold-producing medium utilization of having liquefied be adjusted to the aperture of regulation 5 decompressions of first expansion valve, expand, the state of the gas-liquid two-phase of low-temp low-pressure down inflow first utilize side heat exchanger 6.
The cold-producing medium of this gas-liquid two-phase state utilizes heat absorption and evaporation from the water that in cold warm water closed circuit CW, circulates between flow periods in the side heat exchanger 6 first; In addition; Switch with cubic valve 3, second expansion valve 9 through circulation successively, inflow second utilizes side heat exchanger 8.And, flow into second utilize side heat exchanger 8 cold-producing medium second utilize in the side heat exchanger 8 between flow periods heat absorption from the water that in cold warm water closed circuit CW, circulates and evaporate final gasification at this.The cold-producing medium that has gasified is through the suction inlet 1a of compression circulation with cubic valve 2 inflow compressors 1, utilizes the compressor 1 to be compressed once more and becomes the gas refrigerant of HTHP.
In this operation mode No.1, owing to utilize first to utilize side heat exchanger 6 and second to utilize the water in the cold warm water closed circuit CW of side heat exchanger 8 coolings, so the air in the dwelling house 30 is by indoor heat converter 31 coolings.That is, operation mode No.1 is the cold air operation pattern.Therefore in this operation mode No.1, cold-producing medium utilizes two heat source side heat exchangers 4,7 in atmosphere, to dispel the heat, and utilizes two to utilize side heat exchanger 6,8 from water, to absorb heat, can use heat exchanger effectively and improves the cold air ability.
(operation mode No.2 (Fig. 3))
Operation mode No.2 is a pattern of utilizing the heating installation running of the second compression cycle P C2 separately, is the operation mode of loading big occasion, for example using at the night in winter at indoor heating installation.This operation mode No.2 is in " outdoor temperature Ths-design temperature Tuser≤0 " and " indoor temperature Tapp-design temperature Tuser≤0 " occasion, for example outdoor temperature Ths=7 ℃; Design temperature Tuser=23 ℃, the employed pattern of indoor temperature Tapp=18 ℃ occasion.In addition, the circulating path of the cold-producing medium of this operation mode No.2 is the direction of arrow of Fig. 3, if comparison diagram 2 can find out then that with Fig. 3 the circulating path of the cold-producing medium of the circulating path of the cold-producing medium of operation mode No.2 and operation mode No.1 is opposite.
In this operation mode, at first, utilize the compression circulation with cubic valve 2, refrigerant piping 10 is communicated with refrigerant piping 19, and refrigerant piping 11 is communicated with refrigerant piping 20.In addition, utilize circulation to switch with cubic valve 3, refrigerant piping 12 is communicated with refrigerant piping 13, and refrigerant piping 16 is communicated with refrigerant piping 17.Like this, switch with cubic valve 3 with cubic valve 2 and circulation, form the second compression cycle P C2 through switching the compression circulation.At this, in operation mode No.2, first expansion valve 5 is adjusted into the aperture of regulation, and second expansion valve 9 is for all opening.
The gas refrigerant of the HTHP of discharging from the outlet 1b of compressor utilizes side heat exchanger 8 through the compression circulation with cubic valve 2 inflows second, second utilizes in the side heat exchanger 8 between flow periods to the water-cooled that in cold warm water closed circuit CW, circulates and condenses at this.In addition; Utilize cold-producing medium that side heat exchanger 8 flows out to switch with cubic valve 3 inflows first through second expansion valve 9, circulation successively second and utilize side heat exchanger 6; First utilize between 6 flow periods of side heat exchanger to the water-cooled that in cold warm water closed circuit CW, circulates and condense final liquefaction at this.The cold-producing medium utilization of having liquefied be adjusted to the aperture of regulation 5 decompressions of first expansion valve, expand, at the state of the gas-liquid two-phase of the low-temp low-pressure inflow first heat source side heat exchanger 4 down.
The cold-producing medium of this gas-liquid two-phase state in the first heat source side heat exchanger 4 between flow periods from atmosphere heat absorption and evaporation, in addition, through circulation switch with cubic valve 3 in the second heat source side heat exchanger 7 between flow periods from atmosphere heat absorption and evaporation, finally gasify.The cold-producing medium that has gasified is through the suction inlet 1a of compression circulation with cubic valve 2 inflow compressors 1, utilizes the compressor 1 to be compressed once more and becomes the gas refrigerant of HTHP.
In this operation mode No.2, owing to utilize first to utilize side heat exchanger 6 and second to utilize the water in the side heat exchanger 8 heats cold warm water closed circuit CW, so the air in the dwelling house 30 is by indoor heat converter 31 heating.That is, operation mode No.2 is the heating installation operation mode.Therefore in this operation mode No.2, cold-producing medium utilizes two heat source side heat exchangers 4,7 from atmosphere, to absorb heat, and utilizes two to utilize side heat exchanger 6,8 in water, to dispel the heat, and can use heat exchanger effectively and improves the heating installation ability.
(operation mode No.3 (Fig. 4))
Operation mode No.3 is a pattern of utilizing the cold air operation of the natural recirculating type circulation TS1 and the first compression cycle P C1 in the lump; Be ambient temperature than indoor temperature lower and have the employed pattern of the occasion of cold air load, the occasion that especially need dehumidify (for example, the night during plum rains etc.).This operation mode No.3 is at " outdoor temperature Ths-design temperature Tuser≤-5 " and " indoor temperature Tapp-design temperature Tuser>=0 ", for example outdoor temperature Ths=16 ℃; Design temperature Tuser=23 ℃, the employed pattern of indoor temperature Tapp=25 ℃ occasion.In addition, in this operation mode No.3, the circulating path of cold-producing medium is the direction of arrow of Fig. 4.
In this operation mode, at first, utilize the compression circulation with cubic valve 2, refrigerant piping 10 is communicated with refrigerant piping 11, and refrigerant piping 19 is communicated with refrigerant piping 20.In addition, utilize circulation to switch with cubic valve 3, refrigerant piping 12 is communicated with refrigerant piping 17, and refrigerant piping 13 is communicated with refrigerant piping 16.Like this, switch with cubic valve 3 the independent respectively natural recirculating type circulation TS 1 and the first compression cycle P C1 of forming with cubic valve 2 and circulation through switching the compression circulation.At this, in operation mode No.3, first expansion valve 5 with want to utilize first utilize side heat exchanger 6 to obtain heat-shift correspondingly be adjusted into the aperture of regulation, second expansion valve 9 also is adjusted into the aperture of regulation.
In the first compression cycle P C1 side; The gas refrigerant of the HTHP of discharging from the outlet 1b of compressor 1 through the compression circulation with the cubic valve 2 inflows second heat source side heat exchanger 7; Gas refrigerant dispels the heat and condenses to atmosphere between flow periods in the second heat source side heat exchanger 7, and liquefaction.The cold-producing medium utilization of having liquefied be adjusted to the aperture of regulation 9 decompressions of second expansion valve, expand, the state of the gas-liquid two-phase of low-temp low-pressure down inflow second utilize side heat exchanger 8.The cold-producing medium of this gas-liquid two-phase state utilizes heat absorption and evaporation from the water that in cold warm water closed circuit CW, circulates between flow periods in the side heat exchanger 8 second, and gasification.The cold-producing medium that has liquefied is through the suction inlet 1a of compression circulation with cubic valve 2 inflow compressors 1, utilizes the compressor 1 to be compressed once more and becomes the gas refrigerant of HTHP.
On the other hand, in natural recirculating type circulation TS1 side, the cold-producing medium that is trapped in the first heat source side heat exchanger 4 dispels the heat and condenses to atmosphere, and liquefaction.The liquid refrigerant that density is big receives the influence of gravity and descends, and through first expansion valve 5, utilizes heat absorption and evaporation from the water that in cold warm water closed circuit CW, circulates between flow periods in the side heat exchanger 6 first, and gasification.At this moment, owing to can form the barometric gradient that the density contrast by cold-producing medium causes, the therefore vaporized refrigerant flow direction first heat source side heat exchanger 4.
In this operation mode No.3, owing to utilize first to utilize side heat exchanger 6 and second to utilize the water in the cold warm water closed circuit CW of side heat exchanger 8 coolings, so the air in the dwelling house 30 is by indoor heat converter 31 coolings.That is, operation mode No.3 is the cold air operation pattern.If utilize this operation mode No.3, owing to use the natural recirculating type circulation TS1 and the first compression cycle P C1 in the lump, therefore compare with the operation mode 1 that utilizes the second compression cycle P C2, can suppress power consumption.
In addition, in ambient temperature the occasion below the indoor temperature of dwelling house 30, and the little occasion of the difference of ambient temperature and indoor temperature, be difficult to become the Natural Circulation of the cold-producing medium that utilizes natural recirculating type circulation TS1, be difficult to guarantee cooling capacity.In addition, in ambient temperature the occasion more than the dew-point temperature of room air, only utilize the natural recirculating type running to be difficult to dehumidify.But; According to operation mode No.3; Owing to utilize the first compression cycle P C1 to carry out cold air operation by the strong hand; Therefore be utilized in the water that circulates among the cold warm water closed circuit CW and utilize the cold-producing medium that flows in the side heat exchanger 8 to carry out heat exchange second, can make the cold warm water of supplying with to indoor heat converter 31 is desired temperatures, can carry out the cooling and the dehumidifying of room air.At this moment; The water of cold warm water closed circuit CW carries out heat exchange through the room air of indoor heat converter 31 and dwelling house 30; Become the water of the temperature lower and higher than ambient temperature than indoor temperature; Return first and utilize side heat exchanger 6, absorb heat through the cold-producing medium evaporation, water temperature drops near the ambient temperature.Temperature drops near the ambient temperature water and is sent to second and utilizes side heat exchanger 2 and be cooled to desired temperatures.That is, the cooling capacity of the circulating circulation TS1 of running assisting natural of the first compression cycle P C is in shortage.Like this, operation mode No.3 can utilize the natural recirculating type circulation TS1 and the first compression cycle P C1 in the lump especially in the little occasion of the difference of ambient temperature and indoor temperature, carries out effective cold air operation.
(operation mode No.4 (Fig. 5))
Operation mode No.4 is a pattern of only utilizing the cold air operation of natural recirculating type circulation TS1, is more much lower and remove the employed pattern of the little occasion of humidity load (for example the daytime in winter etc. because sunshine or internal load make the occasion of indoor temperature rising) than indoor temperature in ambient temperature.This operation mode No.4 is at " outdoor temperature Ths-design temperature Tuser≤-10 " and " indoor temperature Tapp-design temperature Tuser>=0 ", for example outdoor temperature Ths=10 ℃; Design temperature Tuser=23 ℃, the employed pattern of indoor temperature Tapp=25 ℃ occasion.This operation mode No.4 is forming on natural recirculating type circulation TS1 and first this aspect of compression cycle P C1 identically with operation mode No.3, but it is different with operation mode No.3 to stop this point in the running that makes compressor 1.That is, whether operation mode No.3 turns round with the different compressors 1 that are of operation mode No.4.In addition, in this operation mode No.4, the circulating path of cold-producing medium is the direction of arrow of Fig. 5.
In this operation mode No.4; For example in the indoor temperature occasion higher than ambient temperature; Can only utilize above-mentioned natural recirculating type circulation TS1 to cool off the water in the cold warm water closed circuit CW, the room air that utilizes 31 pairs of these chilled water of indoor heat converter and dwelling house 30 carries out heat exchange and in the cooling chamber.Like this, though since operation mode No.4 also can cooling chamber under the state that compressor 1 is stopped in, therefore can significantly reduce power consumption.
At this, in above-mentioned embodiment example, used R410a, but also can replace this material as freon class cold-producing medium as the cold-producing medium in the refrigerant piping, use R134a, HFO1234yf, HFO1234ze, CO2.In addition, in above-mentioned embodiment example, make water as the heat transmission medium that in cold warm water closed circuit CW, circulates, but replace this material, can use salt solution such as glycol.In addition; In above-mentioned embodiment example; Adopted as utilizing the side heat transmission medium to make water and being provided with the structure of cold warm water closed circuit CW; But also can replace this structure, as utilizing the side heat transmission medium to use the air in the dwelling house 30 also direct to utilizing the air in side heat exchanger 6,8 and the dwelling house 30 to carry out heat exchange.
In addition; In above-mentioned embodiment example; Use circulation to switch as the circulation switching mechanism, but replace this structure, can adopt and make up two tripartite valves and have with the structure of cubic valve identical function and make up four two side's valves and have the structure with cubic valve identical function with cubic valve 3.At this; Using circulation to switch occasion as the circulation switching mechanism with cubic valve 3; Can switch freeze cycle only utilizing a circulation transfer valve to form first state of the natural recirculating type circulation TS1 and the first compression cycle P C1 independently with cubic valve 3 and form between second state of the second compression cycle P C2, therefore have the advantage that can reduce the parts number of packages.Have the structure with cubic valve identical function if adopt two tripartite valves of combination, then have the control that is used to the to switch freeze cycle easy advantage that becomes.In addition, have the structure with cubic valve identical function if adopt four two side's valves of combination,, therefore have the advantage that can reduce cost then because two side's valves are cheap.
(second embodiment of the present invention)
Then, use Fig. 6 and Fig. 7 that the aircondition of second embodiment example of the present invention is described, but the structure identical with the aircondition of first embodiment example marked identical symbol and omit its explanation.In addition, the arrow that heat exchanger marked in Fig. 7 is represented flowing of heat.As shown in Figure 6; The aircondition of second embodiment example constitutes; Through being assembled in tripartite valve (bypass switching mechanism) 41, first bypass connects on the refrigerant piping 11 of compression circulation with the cubic valve 2 and the second heat source side heat exchanger 7; Second bypass is assembled in second with tripartite valve (bypass switching mechanism) 42 to be utilized on side heat exchanger 8 and the refrigerant piping 19 of compression circulation with cubic valve 2; And utilize bypass with refrigerant piping (bypass pipe arrangement) 43 connect first bypass with tripartite valve 41 and second bypass with tripartite valve 42, the runner that the formation cold-producing medium makes a circulation in compressor, be bypass passageways.Be the structure that bypass passageways is set like this, different with the first embodiment example.
Through this difference, in the aircondition of second embodiment example, can form the natural recirculating type circulation TS2 that uses two 4,7 and two of heat source side heat exchangers to utilize side heat exchanger 6,8, can utilize the running of the operation mode No.5 of following explanation.In addition; In order to form natural recirculating type circulation TS2; The first heat source side heat exchanger 4 and the second heat source side heat exchanger 7 are arranged on roughly the same height or utilize side heat exchanger 6 to be arranged on than second with first and utilize the low height and position of side heat exchanger; First utilizes side heat exchanger 6 and second to utilize side heat exchanger 8 to be arranged on roughly the same height, and the first heat source side heat exchanger 4 and the second heat source side heat exchanger 7 are arranged on than first and utilize side heat exchanger 6 and second to utilize side heat exchanger 8 high positions and drop is set.
In order to form natural recirculating type circulation TS2, operation cycle is switched with cubic valve 3, connects refrigerant piping 12 and refrigerant piping 13, connects refrigerant piping 16 and refrigerant piping 17.In addition, operate first bypass with tripartite valve 41 and second bypass with tripartite valve 42, can not flow into compressor 1 and switch the runner of cold-producing medium with cold-producing medium in the mode that bypass flows in refrigerant piping 43.Like this, process connect annularly the second heat source side heat exchanger 7, circulation switch with cubic valve 3, the first heat source side heat exchanger 4, first expansion valve 5, first utilize side heat exchanger 6, circulation switching with cubic valve 3, second expansion valve 9, second utilize side heat exchanger 8, second bypass with tripartite valve 42, bypass with refrigerant piping 43, first bypass natural recirculating type circulation TS2 with tripartite valve 27.Then, operation mode No.5 is described.
(operation mode No.5 (Fig. 7))
Operation mode No.5 is a pattern of only utilizing the cold air operation of natural recirculating type circulation TS2; No.4 is identical with operation mode, is more much lower and remove the little occasion of humidity load (for example the daytime in winter etc. because sunshine or internal load make the occasion of indoor temperature rising) and use than indoor temperature in ambient temperature.This operation mode No.5 is at " outdoor temperature Ths-design temperature Tuser≤-10 " and " indoor temperature Tapp-design temperature Tuser>=0 ", for example outdoor temperature Ths=10 ℃; Design temperature Tuser=23 ℃, the employed pattern of indoor temperature Tapp=25 ℃ occasion.In addition, in operation mode No.5, the circulating path of cold-producing medium is the direction of arrow of Fig. 7.
In this operation mode, utilize circulation to switch with cubic valve 3, refrigerant piping 12 is communicated with refrigerant piping 13, and refrigerant piping 16 is communicated with refrigerant piping 17.In addition, utilize first bypass with tripartite valve 41 and second bypass with tripartite valve 42, cold-producing medium can not flow into compressor 1 and flow in refrigerant piping 43 in bypass.In operation mode No.5, first expansion valve 5 with want to utilize first utilize side heat exchanger 6 to obtain heat-shift correspondingly be adjusted into the aperture of regulation, second expansion valve 9 is for all opening.In addition, in operation mode No.5, compressor 1 stops.
The cold-producing medium that is trapped in the first heat source side heat exchanger 4 and the second heat source side heat exchanger 7 dispels the heat and condenses to atmosphere, and liquefaction.The liquid refrigerant that density is big receives the influence of gravity and flows to first and utilizes side heat exchanger 6 and second to utilize side heat exchanger 8.Flowing into first utilizes side heat exchanger 6 and second to utilize the cold-producing medium of side heat exchanger 8 to utilize heat absorption and evaporation from the water that in cold warm water closed circuit CW, circulates between flow periods in the side heat exchanger 6,8 at each; Barometric gradient through the density contrast by cold-producing medium produces rises to the second heat source side heat exchanger 7.Like this, cold-producing medium utilizes density contrast in natural recirculating type circulation TS2, to carry out Natural Circulation.
In this operation mode No.5, owing to utilize 4,7 and two of two heat source side heat exchangers to utilize side heat exchanger 6,8 to form natural recirculating type circulation TS2, therefore to compare with above-mentioned natural recirculating type circulation TS1, cooling capacity improves.Owing to need not utilize the running of compressor 1, therefore on this aspect of consumes electric power not, the saving energy is effective.In addition, owing to utilize first to utilize side heat exchanger 6 and second to utilize the water in the cold warm water closed circuit CW of side heat exchanger 8 coolings, so the air in the dwelling house 30 is by indoor heat converter 31 coolings.That is, operation mode No.5 is the cold air operation pattern.
In addition; In this operation mode No.5; Switch with cubic valve 3 through operation cycle; Connect refrigerant piping 12 and refrigerant piping 17, connect refrigerant piping 13 and refrigerant piping 16, can form two natural recirculating type circulations of the natural recirculating type circulation of having used natural recirculating type circulation TS1, the second heat source side heat exchanger 7 and second to utilize side heat exchanger 8.Advantage as this occasion; Can enumerate; Owing to utilizing the temperature difference that increases the external world and water in the natural recirculating type circulation that side heat exchanger 6 and the first heat source side heat exchanger 4 form by first; Therefore compare with systemic circulation mode (using the mode of natural recirculating type circulation TS2), have the possibility that to guarantee cooling capacity, or correspondingly become easy with the switching of operation mode No.4 with the change of ambient temperature or load.
(the 3rd embodiment of the present invention)
Then, use Fig. 8～Figure 14 that the aircondition of the 3rd embodiment example of the present invention is described,, and omit its explanation the identical symbol of structure mark identical with the aircondition of first embodiment example.In addition, the arrow that heat exchanger marked in Fig. 9～Figure 14 is represented flowing of heat.The aircondition of the 3rd embodiment example constitutes; Use the air in the dwelling house 30 as the heat transmission medium that utilizes side; Utilize side heat exchanger 58 to be divided into two to be first to cut apart heat exchanger 58a and second and cut apart heat exchanger 58b with second, cut apart binding that heat exchanger 58a and second cuts apart heat exchanger 58b and the valve (the 3rd expansion valve) 51 that dehumidifies is set between with refrigerant piping 52b connecting first with refrigerant piping 52a and binding.This structure is and the main difference of first embodiment example.According to this structure, while the running that the dehumidifying of the heat again operation mode that the aircondition of the 3rd embodiment example can utilize the air in the dwelling house 30 that warms up to dehumidify carries out.In addition, not shown, be used for that the air in the dwelling house 30 are sent into first and utilize side heat exchanger 1 and second to utilize side heat exchanger 58 air blast of (first cuts apart heat exchanger 58a and second cuts apart heat exchanger 58b) but be provided with.
The aircondition of the 3rd embodiment example is identical with the first embodiment example, can utilize circulation to switch with cubic valve 3 at first state of the natural recirculating type circulation TS3 that explains below the use in the lump, the first compression cycle P C3 and can utilize between second state of the second compression cycle P C4 freeze cycle is switched.
Natural recirculating type circulation TS3 utilizes refrigerant piping 14 to connect the first heat source side heat exchanger 4 and first expansion valve 5; Utilize refrigerant piping 15 to connect first expansion valve 5 and first and utilize side heat exchanger 6; Utilize refrigerant piping 16 to connect first and utilize side heat exchanger 6 and circulation to switch, utilize refrigerant piping 13 to connect the circulation switching forms ring-type with cubic valve 3 and the first heat source side heat exchanger 4 circulation with cubic valve 3.And cold-producing medium utilizes density contrast in this natural recirculating type circulation TS3, to carry out Natural Circulation.
The first compression cycle P C3 is that the outlet 1b and the compression that utilize refrigerant piping 10 to connect compressor 1 circulate with cubic valve 2; Utilize refrigerant piping 11 to connect the compression circulation with the cubic valve 2 and the second heat source side heat exchanger 7; Utilizing refrigerant piping 12 to connect the second heat source side heat exchanger 7 switches with cubic valve 3 with circulation; Utilizing refrigerant piping 17 to connect circulation switches with the cubic valve 3 and second expansion valve 9; Utilize refrigerant piping 18 to connect second expansion valve 9 and first and cut apart heat exchanger 58a; Utilize to link and cut apart heat exchanger 58a and dehumidifying valve 51 with refrigerant piping 52a connection first; Utilize to link and to connect dehumidifying valve 51 and second with refrigerant piping 52b and cut apart heat exchanger 58b, utilize refrigerant piping 19 to connect second and cut apart heat exchanger 58b and compression circulation, utilize refrigerant piping 20 connection compressions to circulate and form the freeze cycle of ring-type with the suction inlet 1a of cubic valve 2 and compressor 1 with cubic valve 2.And, utilize compressor 1 that cold-producing medium is circulated in the first compression cycle P C3.
The second compression cycle P C4 is that the outlet 1b and the compression that utilize refrigerant piping 10 to connect compressor 1 circulate with cubic valve 2; Utilize refrigerant piping 11 to connect the compression circulation with the cubic valve 2 and the second heat source side heat exchanger 7; Utilizing refrigerant piping 12 to connect the second heat source side heat exchanger 7 switches with cubic valve 3 with circulation; Utilizing refrigerant piping 13 to connect circulation switches with the cubic valve 3 and the first heat source side heat exchanger 4; Utilize refrigerant piping 14 to connect the first heat source side heat exchanger 4 and first expansion valve 5; Utilize refrigerant piping 15 to connect first expansion valve 5 and first and utilize side heat exchanger 6, utilize refrigerant piping 16 to connect first and utilize side heat exchanger 6 and circulation to switch, utilize refrigerant piping 17 to connect circulation and switch with the cubic valve 3 and second expansion valve 9 with cubic valve 3; Utilize refrigerant piping 18 to connect second expansion valve 9 and first and cut apart heat exchanger 58a; Utilize to link and to connect first with refrigerant piping 52a and cut apart heat exchanger 58a and dehumidifying valve 51, utilize to link to connect dehumidifying valve 51 and second with refrigerant piping 52b and cut apart heat exchanger 58b, utilize refrigerant piping 19 connections second to cut apart heat exchanger 58b and compression circulates with cubic valve 2;, utilize refrigerant piping 20 to connect the compression circulation forms ring-type with the suction inlet 1a of compressor 1 with cubic valve 2 freeze cycle.And, utilize compressor 1 that cold-producing medium is circulated in the second compression cycle P C4.
Then, the operation mode that the aircondition that utilizes the 3rd embodiment example is carried out describes.In the aircondition of the 3rd embodiment example, shown in following, can carry out six operation modes of operation mode No.6～No.11.
(operation mode No.6 (Fig. 9))
Operation mode No.6 is a pattern of utilizing the dehumidifying of the heat again running of the second compression cycle P C4 separately, is higher than design temperature in indoor temperature, and humidity is high slightly than setting for indoor humidity, the necessary employed operation mode of loading condiction of heating and cooling dehumidifying.This operation mode No.6 is in the occasion of " indoor temperature Tapp-design temperature Tuser >=0 " and " indoor humidity Happ-sets humidity Huser >=0 " and " outdoor temperature Ths-design temperature Tuser >=0 ", for example sets humidity Huser=50%, indoor humidity Happ=60% and design temperature Tuser=23 ℃, indoor temperature Tapp=25 ℃, outdoor temperature Ths=27 ℃ the employed pattern of occasion.In addition, in this operation mode No.6, the circulating path of cold-producing medium is the direction of arrow of Fig. 9.
In this operation mode, at first, utilize the compression circulation with cubic valve 2, refrigerant piping 10 is communicated with refrigerant piping 11, and refrigerant piping 19 is communicated with refrigerant piping 20.In addition, utilize circulation to switch with cubic valve 3, refrigerant piping 12 is communicated with refrigerant piping 13, and refrigerant piping 16 is communicated with refrigerant piping 17.Like this, switch with cubic valve 3 with cubic valve 2 and circulation, form the second compression cycle P C4 through switching the compression circulation.At this, in operation mode No.6, first expansion valve 5 and second expansion valve 9 are for all opening, and dehumidifying valve 51 is adjusted into the aperture of regulation.
The gas refrigerant of the HTHP of discharging from the outlet 1b of compressor the second heat source side heat exchanger 7, the first heat source side heat exchanger 4 between flow periods to as the atmosphere heat radiation of the heat transmission medium of heat source side and condense, inflow first utilizes side heat exchanger 6 under the state of gas-liquid two-phase.The cold-producing medium of this gas-liquid two-phase state first utilize in the side heat exchanger 6 between flow periods through to as the air in the dwelling house that utilizes the side heat transmission medium 30 heat radiation condense; Then; First cut apart among the heat exchanger 58a between flow periods same to dwelling house 30 in the air heat radiation and condense, and liquefy.Cold-producing medium utilization dehumidifying valve 51 decompressions of having liquefied, expand, become gas-liquid two-phase state.The cold-producing medium of gas-liquid two-phase state is cut apart among the heat exchanger 52b between flow periods through the air evaporation in dwelling house 30 second, and gasifies.The cold-producing medium that has gasified flows into the suction inlet 1a of compressor 1, utilizes the compressor 1 to be compressed once more and becomes the gas refrigerant of HTHP.
In this operation mode No.6, utilize first to utilize side heat exchanger 6 and first to cut apart the air in the heat exchanger 52a heating dwellings 30, utilize second to cut apart heat exchanger 52b the air in the dwelling house 30 are carried out cooling and dehumidifying.
(operation mode No.7 (Figure 10))
Operation mode No.7 is a pattern of utilizing the dehumidifying of the heat again running of the second compression cycle P C4 separately, is higher than design temperature in indoor temperature, and humidity is high than setting for indoor humidity, the necessary employed operation mode of loading condiction of heating and cooling dehumidifying.This operation mode No.7 is in the occasion of " indoor temperature Tapp-design temperature Tuser >=0 " and " indoor humidity Tapp-sets humidity Tuser >=15 " and " outdoor temperature Ths-design temperature Tuser >=0 ", for example sets humidity Huser=50%, indoor humidity Happ=70% and design temperature Tuser=23 ℃, indoor temperature Tapp=25 ℃, outdoor temperature Ths=27 ℃ the employed pattern of occasion.
In this operation mode No.7, comparison diagram 9 can find out that with Figure 10 cold-producing medium flows in the circulating path identical with operation mode No.6.But second expansion valve 9 is different in operation mode No.6 and operation mode No.7 with the open and-shut mode of dehumidifying valve 51, and in operation mode No.7, first expansion valve 5 is for all opening, and second expansion valve 9 is adjusted into the aperture of regulation, and dehumidifying valve 51 is for all opening.
The gas refrigerant of the HTHP of discharging from the outlet 1b of compressor the second heat source side heat exchanger 7, the first heat source side heat exchanger 4 between flow periods to as the atmosphere heat radiation of the heat transmission medium of heat source side and condense, inflow first utilizes side heat exchanger 6 under the state of gas-liquid two-phase.The cold-producing medium of this gas-liquid two-phase state utilizes in the side heat exchanger 6 between flow periods through to as the heat radiation of the air in the dwelling house that utilizes the side heat transmission medium 30 and condense first, and liquefaction.The cold-producing medium that has liquefied utilizes 9 decompressions of second expansion valve, expands, and becomes gas-liquid two-phase state.The cold-producing medium of gas-liquid two-phase state is cut apart between heat exchanger 58a flow periods through heat absorption of the air in dwelling house 30 and evaporation first; Then; Cut apart between heat exchanger 58b flow periods equally through the heat absorption of the air from dwelling house 30 in the step evaporation of going forward side by side second, and gasify.The cold-producing medium that has gasified flows into the suction inlet 1a of compressor 1, utilizes the compressor 1 to be compressed once more and becomes the gas refrigerant of HTHP.
In this operation mode No.7, utilize first air that utilize in side heat exchanger 6 heating dwellings 30, utilize first to cut apart heat exchanger 52a and second and cut apart heat exchanger 52b the air in the dwelling house 30 are carried out cooling and dehumidifying.
(operation mode No.8 (Figure 11))
Operation mode No.8 is a pattern of utilizing the dehumidifying of the heat again running of the second compression cycle P C4 separately, is lower than design temperature in indoor temperature, and humidity is high than setting for indoor humidity, the necessary employed operation mode of loading condiction of heating and cooling dehumidifying.This operation mode No.8 is in the occasion of " indoor temperature Tapp-design temperature Tuser≤0 " and " indoor humidity Happ-sets humidity Huser>10 " and " outdoor temperature Ths-design temperature Tuser≤0 ", for example sets humidity Huser=50%, indoor humidity Happ=70% and design temperature Tuser=23 ℃, indoor temperature Tapp=20 ℃, outdoor temperature Ths=18 ℃ the employed pattern of occasion.In addition, the circulating path of the cold-producing medium of this operation mode No.8 is the direction of arrow of Figure 11, is the path opposite with operation mode 6.
In this operation mode, at first, utilize the compression circulation with cubic valve 2, refrigerant piping 10 is communicated with refrigerant piping 19, and refrigerant piping 11 is communicated with refrigerant piping 20.In addition, utilize circulation to switch with cubic valve 3, refrigerant piping 12 is communicated with refrigerant piping 13, and refrigerant piping 16 is communicated with refrigerant piping 17.At this, in operation mode No.8, first expansion valve 5 and second expansion valve 9 are for all opening, and dehumidifying valve 51 is adjusted into the aperture of regulation.
The gas refrigerant of the HTHP of discharging from the outlet 1b of compressor is cut apart the heat exchanger 58b between flow periods to as the heat radiation of the air the dwelling house 30 of the heat transmission medium that utilizes side in and condense second, and liquefies.Cold-producing medium utilization dehumidifying valve 51 decompressions of having liquefied, expand, become gas-liquid two-phase state.The cold-producing medium of gas-liquid two-phase state is in first air heat absorption and the evaporation cut apart among the heat exchanger 58a between flow periods in the dwelling house 30, then, utilizes in the side heat exchanger 6 between flow periods equally air in the dwelling house 30 step evaporation of going forward side by side that absorbs heat first.And, utilize the cold-producing medium of the gas-liquid two-phase state that side heat exchanger 6 flows out in the first heat source side heat exchanger 4 and the second heat source side heat exchanger 7, to flow on one side on one side first from atmosphere heat absorption and evaporation as the heat transmission medium of heat source side, and gasification.The cold-producing medium that has gasified flows into the suction inlet 1a of compressor 1, utilizes the compressor 1 to be compressed once more and becomes the gas refrigerant of HTHP.
In this operation mode No.8, utilize first to utilize side heat exchanger 6 and first to cut apart the air in the heat exchanger 52a cooling and dehumidifying dwelling house 30, utilize second to cut apart heat exchanger 52b the air in the dwelling house 30 are heated.
(operation mode No.9 (Figure 12))
Operation mode No.9 is a pattern of utilizing the heat dehumidifying running again of the second compression cycle P C4 separately, is lower than design temperature in indoor temperature, and humidity is high slightly than setting for indoor humidity, heating and the necessary employed operation mode of loading condiction of dehumidifying a little.This operation mode No.9 is in the occasion of " indoor temperature Tapp-design temperature Tuser≤0 " and " indoor humidity Happ-sets humidity Huser>=0 " and " outdoor temperature Ths-design temperature Tuser≤0 ", for example sets humidity Huser=50%, indoor humidity Happ=60% and design temperature Tuser=23 ℃, indoor temperature Tapp=20 ℃, outdoor temperature Ths=18 ℃ the employed pattern of occasion.In addition, the circulating path of the cold-producing medium of this operation mode No.9 is the direction of arrow of Figure 12, is the path opposite with operation mode No.7.
In this operation mode, at first, utilize the compression circulation with cubic valve 2, refrigerant piping 10 is communicated with refrigerant piping 19, and refrigerant piping 11 is communicated with refrigerant piping 20.In addition, utilize circulation to switch with cubic valve 3, refrigerant piping 12 is communicated with refrigerant piping 13, and refrigerant piping 16 is communicated with refrigerant piping 17.At this, in operation mode No.9, first expansion valve 5 is for all opening, and second expansion valve 9 is adjusted into the aperture of regulation, and dehumidifying valve 51 is for all opening.
The gas refrigerant of the HTHP of discharging from the outlet 1b of compressor is cut apart the heat exchanger 58b between flow periods to dispelling the heat and condense as the air the dwelling house 30 of the heat transmission medium that utilizes side in second; Then; First cut apart among the heat exchanger 58a between flow periods same to dwelling house 30 in the air heat radiation and condense, and liquefy.The cold-producing medium that has liquefied utilizes 9 decompressions of second expansion valve, expands, and becomes gas-liquid two-phase state.The cold-producing medium of gas-liquid two-phase state utilizes in the side heat exchanger 6 between flow periods air heat absorption in the dwelling house 30 step evaporation of going forward side by side first.And, utilize the cold-producing medium of the gas-liquid two-phase state that side heat exchanger 6 discharges in the first heat source side heat exchanger 4 and the second heat source side heat exchanger 7, to flow on one side on one side first from atmosphere heat absorption and evaporation as the heat transmission medium of heat source side, and gasification.The cold-producing medium that has gasified flows into the suction inlet 1a of compressor 1, utilizes the compressor 1 to be compressed once more and becomes the gas refrigerant of HTHP.
In this operation mode No.9, utilize first air that utilize in the side heat exchanger 6 cooling and dehumidifying dwelling houses 30, utilize first to cut apart heat exchanger 58a and second and cut apart heat exchanger 58b the air in the dwelling house 30 are heated.
(operation mode No.10 (Figure 13))
Operation mode No.10 is a pattern of utilizing the dehumidifying of the heat again running of the natural recirculating type circulation TS3 and the first compression cycle P C3 in the lump; Because indoor temperature is higher slightly than design temperature; Indoor humidity is higher than setting humidity; Therefore being the cooling and dehumidifying loading condiction necessary with heating, is at the employed operation mode of the ambient temperature occasion more much lower than indoor temperature.This operation mode No.10 is in the occasion of " indoor temperature Tapp-design temperature Tuser≤0 " and " indoor humidity Happ-sets humidity Huser>=0 " and " outdoor temperature Ths-design temperature Tuser≤-10 ", for example sets humidity Huser=50%, indoor humidity Happ=70% and design temperature Tuser=23 ℃, indoor temperature Tapp=25 ℃, outdoor temperature Ths=10 ℃ the employed pattern of occasion.In addition, in this operation mode No.10, the circulating path of cold-producing medium is the direction of arrow of Figure 13.
In this operation mode, at first, utilize the compression circulation with cubic valve 2, refrigerant piping 10 is communicated with refrigerant piping 11, and refrigerant piping 19 is communicated with refrigerant piping 20.In addition, utilize circulation to switch with cubic valve 3, refrigerant piping 12 is communicated with refrigerant piping 17, and refrigerant piping 13 is communicated with refrigerant piping 16.At this, in operation mode No.10, first expansion valve 5 with want to utilize first utilize side heat exchanger 6 to obtain heat-shift correspondingly be adjusted into the aperture of regulation, second expansion valve 9 is for all opening, the valve 51 that dehumidifies is adjusted into the aperture of regulation.
In the first compression cycle P C3 side; The gas refrigerant of the HTHP of discharging from the outlet 1b of compressor the second heat source side heat exchanger 7 between flow periods to as the atmosphere heat radiation of the heat transmission medium of heat source side and condense, heat exchanger 58a is cut apart in inflow first under the state of gas-liquid two-phase.The cold-producing medium of this gas-liquid two-phase state first cut apart among the heat exchanger 58a between flow periods through to as the air in the dwelling house 30 of the heat transmission medium that utilizes side heat radiation condense and liquefaction.Cold-producing medium utilization dehumidifying valve 51 decompressions of having liquefied are expanded, and become gas-liquid two-phase state.The cold-producing medium of gas-liquid two-phase state is in second air heat absorption and the evaporation cut apart between heat exchanger 52b flow periods in the dwelling house 30, and gasification.The cold-producing medium that has gasified flows into the suction inlet 1a of compressor 1, utilizes the compressor 1 to be compressed once more and becomes the gas refrigerant of HTHP.
On the other hand, in natural recirculating type circulation TS3 side, the cold-producing medium that is trapped in the first heat source side heat exchanger 4 dispels the heat and condenses to atmosphere, and liquefaction.The liquid refrigerant that density is big receives the influence of gravity and descends, through first expansion valve 5, in the first air heat absorption and the evaporation that utilize in the side heat exchanger 6 between flow periods in the dwelling house 30.At this moment, owing to can form the barometric gradient by the density contrast generation of cold-producing medium, the therefore vaporized refrigerant flow direction first heat source side heat exchanger 4.
At this operation mode No.10, utilize first air that utilize in the side heat exchanger 6 cooling dwelling houses 30, utilize first to cut apart heat exchanger 58a and heat once more, utilize second to cut apart heat exchanger 58b and carry out cooling and dehumidifying.Thus; In ambient temperature the occasion below the indoor temperature of dwelling house 30, even the little occasion of the difference of ambient temperature and indoor temperature, through utilizing the natural recirculating type circulation TS3 and the first compression cycle P C3; Suitable cooling and dehumidifying and heating can be carried out, the humiture of expectation can be accessed.Thus, compare, can improve dehumidifying effect with the natural recirculating type circulation.
(operation mode No.11 (Figure 14))
Operation mode No.11 is a pattern of utilizing the dehumidifying of the heat again running of the natural recirculating type circulation TS3 and the first compression cycle P C3 in the lump; Because indoor temperature is lower than design temperature; Indoor humidity is higher than setting humidity; Therefore being the cooling and dehumidifying loading condiction necessary with heating, is the employed operation mode of the ambient temperature occasion more much lower than indoor temperature.This operation mode No.11 is in the occasion of " indoor temperature Tapp-design temperature Tuser≤0 " and " indoor humidity Happ-design temperature Huser>=0 " and " outdoor temperature Ths-design temperature Tuser≤-10 ", for example sets humidity Huser=50%, indoor humidity Happ=70% and design temperature Tuser=23 ℃, indoor temperature Tapp=21 ℃, outdoor temperature Ths=10 ℃ the employed pattern of occasion.In addition, the circulating path of the cold-producing medium among this operation mode No.11 is the direction of arrow of Figure 14, and relatively Figure 13 and Figure 14 can find out that the direction of the circulating path of the cold-producing medium of the first compression cycle P C3 is opposite with operation mode No.10.
In this operation mode, at first, utilize the compression circulation with cubic valve 2, refrigerant piping 10 is communicated with refrigerant piping 19, and refrigerant piping 11 is communicated with refrigerant piping 20.In addition, utilize circulation to switch with cubic valve 3, refrigerant piping 12 is communicated with refrigerant piping 17, and refrigerant piping 13 is communicated with refrigerant piping 16.At this, in operation mode No.11, first expansion valve 5 with want to utilize first utilize side heat exchanger 6 to obtain heat-shift correspondingly be adjusted into the aperture of regulation, second expansion valve 9 is for all opening, the valve 51 that dehumidifies is adjusted into the aperture of regulation.
In the first compression cycle P C3 side, the gas refrigerant of the HTHP of discharging from the outlet 1b of compressor is cut apart the heat exchanger 58b between flow periods to as the heat radiation of the air the dwelling house 30 of the heat transmission medium that utilizes side in and condense second, and liquefies.Cold-producing medium utilization dehumidifying valve 51 decompressions of having liquefied, expand, become the state of gas-liquid two-phase.The cold-producing medium of gas-liquid two-phase state is in first air heat absorption and the evaporation cut apart among the heat exchanger 58a between flow periods in the dwelling house 30; And in the second heat source side heat exchanger 7 between flow periods from atmosphere heat absorption and evaporation as the heat transmission medium of heat source side, and gasification.The cold-producing medium that has gasified flows into the suction inlet 1a of compressor 1, utilizes the compressor 1 to be compressed once more and becomes the gas refrigerant of HTHP.
On the other hand, in natural recirculating type circulation TS3 side, the cold-producing medium that is trapped in the first heat source side heat exchanger 4 dispels the heat and condenses to atmosphere, and liquefaction.The liquid refrigerant that density is big receives the influence of gravity and descends, through first expansion valve 5, in the first air heat absorption and the evaporation that utilize in the side heat exchanger 6 between flow periods in the dwelling house 30.At this moment, owing to can form the barometric gradient by the density contrast generation of cold-producing medium, the therefore vaporized refrigerant flow direction first heat source side heat exchanger 4.
In this operation mode No.11, utilize first air that utilize in the side heat exchanger 6 cooling dwelling houses 30, utilize first to cut apart heat exchanger 58a and carry out cooling and dehumidifying, utilize second to cut apart heat exchanger 58b and heat once more.Thus; It in ambient temperature the occasion below the indoor temperature of dwelling house 30; Especially the little occasion of the difference of ambient temperature and indoor temperature; Through utilizing the natural recirculating type circulation TS3 and the first compression cycle P C3 in the lump, can carry out suitable cooling and dehumidifying and heating, can access the humiture environment of expectation.Thus, compare, can improve dehumidifying effect with the natural recirculating type circulation.
In addition, in the aircondition of the 3rd embodiment example,, then can only utilize the running of natural recirculating type circulation TS3 if compressor 1 is stopped.
(the 4th embodiment of the present invention)
Then, use Figure 15 that the aircondition of the 4th embodiment example of the present invention is described, but to the structure mark identical symbol identical with the aircondition of first embodiment example, and omit its explanation.The aircondition of the 4th embodiment is characterised in that; Constitute; Formation comprises middle warm water closed circuit (the heat source side heat transmission medium closed circuit) MW of the second heat source side heat exchanger 7, as the heat transmission medium of heat source side water is circulated in the warm water closed circuit MW of this centre.
Middle warm water closed circuit MW is that warm water pipe arrangement (the heat source side heat transmission medium use pipe arrangement) 62,63 connects the second heat source side heat exchanger 7 with heat storage container 61 and the loop of the ring-type of formation in the middle of utilizing.And, utilizing not shown circulating pump, water is forced circulation in middle warm water closed circuit MW.In addition, in heat storage container 61, be filled with heat-storing material.
In the aircondition of the 4th embodiment of this formation example; For example; If utilize above-mentioned operation mode No.1 and the running of No.3; Then utilize the second heat source side heat exchanger 7 to discharge the warm of cold-producing medium to the outside, the water that in middle warm water closed circuit MW, flows absorbs from the second heat source side heat exchanger 7 that this is warm.It is warm by heat storage container 61 accumulation of heats that water absorbs, and the water that in middle warm water closed circuit MW, circulates is middle warm water.Like this, according to the 4th embodiment example, the heat extraction of the second heat source side heat exchanger 7 can effectively be utilized and warm water in the middle of processing.Usually; With respect to indoor cold air need by day many; Supplying with hot water needs manyly at night, but according to the routine aircondition of the 4th embodiment, on heat storage container 61, middle warm water is carried out accumulation of heat owing to can be utilized in the heat extraction of the second heat source side heat exchanger 7 when carrying out cold air operation daytime; Therefore can utilize the middle warm water of heat storage container 61 to supply with hot water at night, realize effective utilization of energy.In addition, the solar heat collection device is connected on the heat storage container 61, can utilizes the energy that to regenerate.
In addition, the evaporimeter as the hot water supply circulation also can use the second heat source side heat exchanger 7.Specifically; Shown in figure 15; Utilize to supply with hot water with refrigerant piping 74a～74d connect successively supply with hot water with compressor 71, supply with hot water with condenser 72, supply with hot water forms ring-type with expansion valve 73, the second heat source side heat exchanger 7 supply hot water circuit, utilize and supply with hot water and construct the hot water supply system that is used to supply with hot water with condenser 72 and storage hot water tank 75 with pipe arrangement 76,77 connection supply hot water.In hot water supply system, utilize supply hot water to absorb heat and evaporation from the second heat source side heat exchanger 7 with cold-producing medium with the supply hot water of expansion valve 73 decompressions, dilated gas-liquid two-phase state, and gasification.That is, in hot water supply system, the second heat source side heat exchanger 7 works as evaporimeter.In addition, in this example, carry out the heat transmission medium of the heat source side of heat exchange with the second heat source side heat exchanger 7 and use cold-producing medium for supplying with hot water.According to this structure,, therefore can reduce cost owing to can the second heat source side heat exchanger 7 be used for hot water supply system and air-conditioning system both sides.In addition, use cold-producing medium, can use R134a, HFO1234yf, HFO1234ze, CO2 etc. as supplying with hot water.
As stated, the embodiment example according to above-mentioned owing to can utilize the heat exchanger that is used for Natural Circulation as the heat exchanger of compression circulation, therefore can improve the efficient of heat exchange.In addition, in above-mentioned embodiment example, owing to can utilize natural recirculating type circulation and compression circulation in the lump, therefore in the ambient temperature occasion lower, even the difference of ambient temperature and indoor temperature hour also can improve dehumidifying effect than indoor temperature.In addition, in above-mentioned embodiment example,, therefore can effectively utilize energy owing to can the heat extraction of heat exchanger be used to supply water or supply with the equipment of hot water.
Symbol description
1-compressor, 1a-suction inlet, 1b-outlet, 2-compression circulate with cubic valve (flow channel switching valve); 3-circulation is switched with cubic valve (circulation switching mechanism), 4-the first heat source side heat exchanger, and 5-the first expansion valve, 6-the first utilizes the side heat exchanger; 7-the second heat source side heat exchanger, 8-the second utilizes the side heat exchanger, 9-the second expansion valve, 10～20-refrigerant piping; 30-dwelling house (space is cooled), 31-indoor heat converter, 32-circulating pump, cubic valve is used in 33-cold warm water loop; 35～40-cold warm water pipe arrangement (utilizing the side heat transmission medium to use pipe arrangement), 41-the first bypass are with tripartite valve (bypass switching mechanism), and 42-the second bypass is with tripartite valve (bypass switching mechanism); 43-bypass is with refrigerant piping (bypass pipe arrangement), 51-dehumidifying valve (the 3rd expansion valve), and refrigerant piping is used in 52a, 52b-binding; 58a-first is cut apart heat exchanger, and 58b-second is cut apart heat exchanger, the 61-heat storage container; 62, warm water pipe arrangement (the heat source side heat transmission medium is used pipe arrangement) in the middle of the 63-, 71-supply with hot water to use compressor, 72-supply with hot water to use condenser; 73-to supply with hot water to use expansion valve, 74a～74d-supply hot water is used refrigerant piping, 75-storage hot water tank; 76,77-supply hot water is used pipe arrangement, TS1～TS3-natural recirculating type circulation, PC1, the circulation of PC3-first compression; PC2, the circulation of PC4-second compression, CW-cold warm water closed circuit (utilizing side heat transmission medium closed circuit), MW-middle warm water closed circuit (heat source side heat transmission medium closed circuit).

Claims (6)

1. aircondition; First and second heat source side heat exchanger that it possesses compressor, carry out heat exchange to the heat transmission medium and the cold-producing medium of heat source side, the heat transmission medium that utilizes side and cold-producing medium are carried out heat exchange first and second utilize the side heat exchanger, switch flow channel switching valve and first and second expansion valve of the runner direction of cold-producing medium; This aircondition is characterised in that
Can form following three freeze cycle at least:
Utilize refrigerant piping to connect the above-mentioned first heat source side heat exchanger, above-mentioned first expansion valve successively and be arranged on above-mentioned first of the position lower than the above-mentioned first heat source side heat exchanger and utilize the side heat exchanger and form ring-type, cold-producing medium utilizes density contrast to carry out the natural recirculating type circulation of Natural Circulation;
Utilize refrigerant piping to connect the outlet of above-mentioned compressor, above-mentioned flow channel switching valve, the above-mentioned second heat source side heat exchanger, above-mentioned second expansion valve, above-mentioned second successively and utilize the suction inlet of side heat exchanger and above-mentioned compressor and form ring-type, utilize above-mentioned compressor to make first compression circulation of cold-producing medium circulation by the strong hand; And
Utilizing refrigerant piping to connect the outlet of above-mentioned compressor, above-mentioned flow channel switching valve, the above-mentioned second heat source side heat exchanger, the above-mentioned first heat source side heat exchanger, above-mentioned first expansion valve, above-mentioned first successively utilizes side heat exchanger, above-mentioned second to utilize the suction inlet of side heat exchanger and above-mentioned compressor and form ring-type; Utilize above-mentioned compressor to make second compression circulation of cold-producing medium circulation by the strong hand
This aircondition possesses the circulation switching mechanism that between second state of first state that above-mentioned natural recirculating type circulates and the circulation of above-mentioned first compression forms independently and above-mentioned second compression circulation of formation, freeze cycle is switched.
2. aircondition according to claim 1 is characterized in that,
With utilize the side heat transmission medium with pipe arrangement connect successively above-mentioned first utilize side heat exchanger, above-mentioned second to utilize the side heat exchanger and be arranged on the indoor heat converter in the space that is cooled and form ring-type utilize side heat transmission medium closed circuit,
Make by the strong hand as the above-mentioned water of side heat transmission medium or the salt solution of utilizing and circulate above-mentioned the utilization in the side heat transmission medium closed circuit.
3. aircondition according to claim 1 and 2 is characterized in that,
Utilize the side heat exchanger to be divided into two to be first to cut apart heat exchanger and second and cut apart heat exchanger with above-mentioned second, cut apart binding that heat exchanger and above-mentioned second cuts apart heat exchanger and the 3rd expansion valve is set on refrigerant piping connecting above-mentioned first.
4. according to each described aircondition of claim 1～3, it is characterized in that,
Utilize the heat source side heat transmission medium to connect above-mentioned second heat source side heat exchanger and heat storage container and form the heat source side heat transmission medium closed circuit of ring-type with pipe arrangement,
Water as the heat transmission medium of above-mentioned heat source side is circulated in above-mentioned heat source side heat transmission medium closed circuit.
5. according to each described aircondition of claim 1～3, it is characterized in that,
Utilize to supply with hot water with refrigerant piping connect successively supply with hot water with compressor, supply with hot water with utilizing side heat exchanger, supply hot water with expansion valve and the above-mentioned second heat source side heat exchanger and form the supply hot water circuit of ring-type,
Utilize above-mentioned supply hot water the supply hot water as the heat transmission medium of above-mentioned heat source side to be circulated in above-mentioned supply hot water circuit with cold-producing medium with compressor.
6. according to each described aircondition of claim 1～5, it is characterized in that,
Be provided with the bypass pipe arrangement of the suction inlet that makes above-mentioned compressor and outlet bypass and the runner of cold-producing medium is switched to via the runner of above-mentioned compressor and bypass switching mechanism via any runner of the runner of above-mentioned bypass pipe arrangement.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114341570A (en) * 2019-09-04 2022-04-12 大金工业株式会社 Compressor unit and refrigeration device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2787304A4 (en) * 2011-11-29 2015-09-16 Hitachi Ltd Air conditioning/hot water supply system
CN106940099B (en) * 2016-01-05 2023-09-12 青岛海尔新能源电器有限公司 heat pump water heater
CN110425776A (en) * 2019-08-19 2019-11-08 北京丰联奥睿科技有限公司 A kind of V-type vertical tube evaporative cooling tower and its double control air-conditioning system
JP7309593B2 (en) * 2019-12-18 2023-07-18 株式会社日立産機システム Exhaust heat recovery system and gas compressor used therefor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10300128A (en) * 1997-04-23 1998-11-13 Matsushita Electric Works Ltd Cooling/dehumidifying apparatus of refrigerant natural circulation type air air-conditioning apparatus combinedly provided therewith
JP2000074515A (en) * 1998-08-31 2000-03-14 Mitsubishi Electric Building Techno Service Co Ltd Air conditioner
JP2000111190A (en) * 1998-10-09 2000-04-18 Mitsubishi Electric Building Techno Service Co Ltd Cooler
CN1335923A (en) * 1999-02-24 2002-02-13 八洋工程株式会社 Heat pump system of combination of ammonia cycle and carbon dioxide cycle
JP2003121072A (en) * 2001-10-09 2003-04-23 Mitsubishi Electric Corp Dehumidifying and drying device
WO2009087733A1 (en) * 2008-01-07 2009-07-16 Mitsubishi Electric Corporation Refrigeration cycle device and four-way valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10300128A (en) * 1997-04-23 1998-11-13 Matsushita Electric Works Ltd Cooling/dehumidifying apparatus of refrigerant natural circulation type air air-conditioning apparatus combinedly provided therewith
JP2000074515A (en) * 1998-08-31 2000-03-14 Mitsubishi Electric Building Techno Service Co Ltd Air conditioner
JP2000111190A (en) * 1998-10-09 2000-04-18 Mitsubishi Electric Building Techno Service Co Ltd Cooler
CN1335923A (en) * 1999-02-24 2002-02-13 八洋工程株式会社 Heat pump system of combination of ammonia cycle and carbon dioxide cycle
JP2003121072A (en) * 2001-10-09 2003-04-23 Mitsubishi Electric Corp Dehumidifying and drying device
WO2009087733A1 (en) * 2008-01-07 2009-07-16 Mitsubishi Electric Corporation Refrigeration cycle device and four-way valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114341570A (en) * 2019-09-04 2022-04-12 大金工业株式会社 Compressor unit and refrigeration device

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