CN202928089U - Multiple-temperature-zone carbon dioxide heat pump hot water unit - Google Patents
Multiple-temperature-zone carbon dioxide heat pump hot water unit Download PDFInfo
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- CN202928089U CN202928089U CN 201220532155 CN201220532155U CN202928089U CN 202928089 U CN202928089 U CN 202928089U CN 201220532155 CN201220532155 CN 201220532155 CN 201220532155 U CN201220532155 U CN 201220532155U CN 202928089 U CN202928089 U CN 202928089U
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Abstract
The utility model relates to a multiple-temperature-zone carbon dioxide heat pump hot water unit which comprises a compressor, a multiple-temperature-zone heating system, a heat regenerator, an electronic expansion valve, an evaporator, a gas-liquid separator and an oil temperature cooler which are sequentially in serial connection. The multiple-temperature-zone heating system comprises n gas coolers which are in parallel connection. Each gas cooler comprises a corresponding circulation heat exchange water storage tank. Under control of a three-way valve and a valve, refrigerants are distributed to all gas cooler to achieve multiple-temperature-zone hot water. The multiple-temperature-zone carbon dioxide heat pump hot water unit has the advantages of being quick in heating speed, capable of manufacturing hot water of corresponding temperature zones according to different customer requirements, free of pollution, reasonable in structural design, optimized and good in energy saving effect.
Description
Technical field
The utility model relates to a kind of Hot water units that is applied in industry or commercial field, especially a kind of carbon dioxide heat-pump hot-water heating system that the hot water of many warm areas can be provided.
Background technology
Need a large amount of factory or units that use hot water at some, produce the hot water of single warm area, often can not satisfy user's multiple demand.And mix by high-temperature water and normal-temperature water the method for obtaining different warm area hot water, and can cause a lot of irreversible heat loss, be also a kind of significant wastage to thermal source, therefore the assessment of heat pump system performance also is subjected to impact to a certain extent.On the other hand, for traditional carbon dioxide heat-pump, physicochemical properties due to carbon dioxide itself, when obtaining the systematic function of high energy efficiency, also can produce the destabilizing factor in some systems, for example, the lubricating oil of compressor is due to the excess Temperature of compressor, easily carbonization affects the normal operation of compressor then.
Summary of the invention
The purpose of this utility model is to provide a kind of heat loss, stable, carbon dioxide heat-pump hot-water heating system that many warm areas hot water can be provided avoided.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of many warm areas carbon dioxide heat-pump Hot water units, it comprises heat pump and the many warm areas heating system that is in series; Refrigeration working medium in described heat pump and described many warm areas heating system is carbon dioxide;
Described heat pump comprises compressor, regenerator, expansion valve, evaporimeter, oil temperature cooler; The exhaust outlet of described compressor is connected with the inlet end of described many warm areas heating system, the outlet side of described many warm areas heating system is connected with the inlet end of described evaporimeter with described expansion valve through described regenerator, the outlet side of described evaporimeter is connected with the air inlet of described compressor with described oil temperature cooler through described regenerator successively, and the bypass of described compressor and described oil temperature cooler are connected to form the oil temperature cooling system;
Described many warm areas heating system comprises gas cooled branch road and n water storage box that the n road is in parallel, and is respectively arranged with air cooler on each described gas cooled branch road; Be provided with the first triple valve on the described gas cooled branch road in front (n-1) road, described the first triple valve has the first port, the second port and the 3rd port, the first port of described the first triple valve on the described gas cooled branch road of the first via is connected with the gas outlet of described compressor, and the second port of the first triple valve on the first port of described the first triple valve on all the other described gas cooled branch roads and the described gas cooled branch road in last road is connected; Be provided with valve on the described gas cooled branch road in n road, the second port of described the first triple valve on the air inlet port of described valve and the described gas cooled branch road in last road is connected; Before the gas outlet of described valve on the 3rd port and the described gas cooled branch road in described n road of described the first triple valve on (n-1) road described gas cooled branch road be connected with described regenerator through the described air cooler on the gas cooled branch road at its place respectively;
Each described water storage box and one tunnel described corresponding being connected of gas cooled branch road, described water storage box has water inlet and delivery port, and described water inlet is connected with the water source, is connected with the water outlet branch road on described delivery port; Be connected with on described water storage box and add heat passage; The described heat passage that adds is drawn by getting back to after described air cooler in described water storage box by described water storage box; The described water outlet branch road that adjacent two described water storage boxes connect is connected by the second triple valve and is connected to the first port and second port of described the second triple valve, and the 3rd port of described the second triple valve is the water side of described many warm areas heating system.
Preferably, be connected with gas-liquid separator between the outlet side of described evaporimeter and described regenerator.
Preferably, described vaporizer side is relative is provided with evaporation fan.
Preferably, described many warm areas heating system comprises three tunnel described gas cooled branch roads and three described water storage boxes, and described water storage box comprises the high temperature water storage box that is connected with the described gas cooled branch road of the first via, the middle temperature water storage box that is connected with the second tunnel described gas cooled branch road, the Low Temperature Storage water tank that is connected with the described gas cooled branch road of Third Road; Be provided with the first air cooler on the described gas cooled branch road of the first via, be provided with the second air cooler on the second tunnel described gas cooled branch road, be provided with the 3rd air cooler on the described gas cooled branch road of Third Road.
Preferably, described water outlet is propped up route described adding on heat passage and is drawn.
Preferably, described expansion valve is electric expansion valve.
Preferably, described regenerator is valve jacket tubular type regenerator.
Preferably, described oil temperature cooler is valve jacket tubular type oil temperature cooler.
The utility model operation principle is: carbon dioxide enters in many warm areas heating system through after the compression of compressor as refrigeration working medium.Through the control of triple valve, the carbon dioxide of different flow is respectively allocated in each gas cooled branch road, and in air cooler with water storage box in the water heat exchange to reach the purpose of heating water.And the amount of the refrigeration working medium that distributes due to each gas cooled branch road is different, thereby can obtain the hot water of different temperatures.Absorb heat in evaporimeter and flow through to enter after regenerator and expansion valve through the carbon dioxide after heat exchange, then carbon dioxide pass through again regenerator with through the too much carbon dioxide heat exchange of warm area heating system, then enter in the oil temperature cooler.In compressor, the lubricating oil of high temperature enters oil temperature cooler and carbon dioxide generation heat exchange via bypass.Finally enter in compressor again with carbon dioxide after the lubricating oil heat exchange and compress.And the water in water storage box via add heat passage enter realize with the carbon dioxide heat exchange in air cooler the heating.And the water outlet of water storage box is via the control of the triple valve on the water outlet branch road, and the hot water that can obtain a plurality of warm areas uses for different demands.
Because technique scheme is used, the utility model compared with prior art has following advantages:
1, the utility model is provided with a plurality of water storage boxes of different warm areas, is connected and in conjunction with corresponding control method, can be obtained the hot water of a plurality of different warm areas by triple valve, can meet the different needs simultaneously;
2, the utility model is directly produced the hot water of required warm area, when having avoided producing on traditional sense many warm areas of target hot water, because several water sources temperature difference is too large, produces too much thermal losses when mixing.Make the heat of hot water storage tank obtain maximum utilization, improve to greatest extent the utilization rate of the energy;
3, the utility model is provided with the oil temperature cooling system, and the heat exchange of the cryogenic gas of the high temperature grease by compressor and regenerator outlet can reduce the temperature of lubricating oil effectively, improves the service behaviour of compressor.
Description of drawings
Accompanying drawing 1 is the schematic diagram of the embodiment one of many warm areas carbon dioxide heat-pump Hot water units of the present utility model.
In above accompanying drawing: 1, compressor; 2, the first triple valve; 3, the first triple valve; 4, valve; 5, the first air cooler; 6, high temperature water storage box; 7, the second air cooler; 8, middle temperature water storage box; 9, the 3rd air cooler; 10, Low Temperature Storage water tank; 11, the second triple valve; 12, the second triple valve; 13, regenerator; 14, electric expansion valve; 15, evaporation fan; 16, evaporimeter; 17, gas-liquid separator; 18, oil temperature cooler; 19, many warm areas heating system.
The specific embodiment
Below in conjunction with embodiment shown in the drawings, the utility model is further described.
Embodiment one: shown in accompanying drawing 1.
A kind of many warm areas carbon dioxide heat-pump Hot water units, it comprises heat pump and the many warm areas heating system 19 that is in series.Refrigeration working medium in heat pump and many warm areas heating system 19 is carbon dioxide.
Heat pump comprises evaporation fan 15, gas-liquid separator 17, the oil temperature cooler 18 that compressor 1, regenerator 13, electric expansion valve 14, evaporimeter 16, relative evaporation device 16 arrange.The exhaust outlet of compressor 1 is connected with the inlet end of many warm areas heating system 19.The outlet side of many warm areas heating system 19 is connected with the inlet end of electric expansion valve 14 with evaporimeter 16 through regenerator 13, and the outlet side of evaporimeter 16 first is connected with the air inlet of oil temperature cooler 18 with compressor 1 through regenerator 13 after gas-liquid separator 17 more successively.The bypass of compressor 1 and oil temperature cooler 18 are connected to form the oil temperature cooling system.Wherein, regenerator 13 is valve jacket tubular type regenerator, and oil temperature cooler 18 is valve jacket tubular type oil temperature cooler.
Many warm areas heating system 19 comprises gas cooled branch road and n water storage box that the n road is in parallel, and is respectively arranged with air cooler on each gas cooled branch road.Be provided with the first triple valve on the gas cooled branch road of front (n-1) road, the first triple valve has the first port a, the second port b and the 3rd port c, the first port a of the first triple valve on first via gas cooled branch road is connected with the gas outlet of compressor 1, and the second port b of the first triple valve on the first port a of the first triple valve on the cooling branch road of remaining gas and last road gas cooled branch road is connected.Be provided with valve 4 on the gas cooled branch road of n road, the second port b of the first triple valve on the air inlet port of valve 4 and last road gas cooled branch road is connected.Before the gas outlet of valve 4 on the 3rd port c and the n road gas cooled branch road of the first triple valve on (n-1) road gas cooled branch road be connected with regenerator 13 through the air cooler on the gas cooled branch road at its place respectively.
Each water storage box is with one the tunnel gas cooled branch road is corresponding is connected.Water storage box has water inlet and delivery port, and water inlet is connected with the water source, is connected with the water outlet branch road on delivery port.Be connected with on water storage box and add heat passage.Adding heat passage is drawn by getting back in water storage box after air cooler by water storage box.The water outlet branch road that adjacent two water storage boxes connect is connected by the second triple valve and is connected to the first port a and the second port b of the second triple valve, and the 3rd port c of the second triple valve is the water side of many warm areas heating system 19.
In the present embodiment, this unit is take the gas cooled branch road that comprises three tunnel parallel connections and three water storage boxes as example.Three tunnel gas cooled branch roads are respectively first via gas cooled branch road, the second tunnel gas cooled branch road, Third Road gas cooled branch road.Be provided with on first via gas cooled branch road on first air cooler the 5, the second tunnel gas cooled branch road and be provided with the second air cooler 7, be provided with the 3rd air cooler 9 on Third Road gas cooled branch road.And three water storage boxes be respectively with the high temperature water storage box 6 of the corresponding connection of first via gas cooled branch road, with the corresponding middle temperature water storage box 8 that is connected of the second tunnel gas cooled branch road, with the corresponding Low Temperature Storage water tank 10 that is connected of Third Road gas cooled branch road.
Be provided with the first triple valve 2,3 on the road that the first furnace gases is cooling and the second tunnel gas cooled branch road.The first port a of the first triple valve 2 on first via gas cooled branch road is connected with the gas outlet of compressor 1, and the second port b of the first triple valve 2 on the first port a of the first triple valve 3 on the second tunnel gas cooled branch road and first via gas cooled branch road is connected.Be provided with valve 4 on Third Road gas cooled branch road, the second port b of the first triple valve 3 on the air inlet port of valve 4 and the second tunnel gas cooled branch road is connected.The gas outlet of the valve 4 on the first triple valve 2 on first via gas cooled branch road and the second tunnel gas cooled branch road, 3 the 3rd port c and Third Road gas cooled branch road is respectively through 9 being connected with regenerator 13 after the first air cooler 5, the second air cooler 7, the 3rd air cooler.
High temperature water storage box 6, middle temperature water storage box 8, Low Temperature Storage water tank 10 all have water inlet and delivery port.Water inlet be connected with the water source (as directly being connected with running water); And be connected with the water outlet branch road on delivery port.All be connected with on each water storage box and add heat passage, by hydronic mode hot water preparing.The heat passage that adds that connects on high temperature water storage box 6 is drawn by getting back in high temperature water storage box 6 after the first air cooler 5 by high temperature water storage box 6; The heat passage that adds that connects on middle temperature water storage box 8 is drawn by getting back to after the second air cooler 7 in middle temperature water storage box 8 by middle temperature water storage box 8; The heat passage that adds that connects on Low Temperature Storage water tank 10 is drawn by getting back in Low Temperature Storage water tank 10 after the 3rd air cooler 9 by Low Temperature Storage water tank 10.Water outlet is propped up on route heating path and is drawn, between the water outlet branch road of high temperature water storage box 6 and the water outlet branch road of middle temperature water storage box 8, be connected by the second triple valve 11,12 respectively between the water outlet branch road of the water outlet branch road of middle temperature water storage box 8 and Low Temperature Storage water tank 10, and be connected to the second triple valve 11,12 the first port a and the second port b, the second triple valve 11,12 the 3rd port c are the water side of many warm areas heating system 19.
The operation principle of above-mentioned many warm areas carbon dioxide heat-pump Hot water units with three tunnel gas cooled branch roads is as follows:
The carbon dioxide working medium of the high temperature of compressed machine 1 compression enters in many warm areas heating system 19, by the first triple valve 2,3 and the control of valve 4 enter in three tunnel gas cooled branch roads with different flows respectively.In the first air cooler 5, water in carbon dioxide and high temperature water storage box 6 carries out heat exchange, in the second air cooler 7, water in carbon dioxide and middle temperature water storage box 8 carries out heat exchange, in the 3rd air cooler 9, water in carbon dioxide and Low Temperature Storage water tank 10 carries out heat exchange, finally reaches the purpose of heating water.Then carbon dioxide working medium is through after regenerator 13, then enters in evaporimeter 16 through electric expansion valve 14 and absorb heat.The carbon dioxide that goes out evaporimeter 16 enters in regenerator 13 through gas-liquid separator 17 and carries out heat exchange with the low-temperature carbon dioxide that goes out each air cooler, and then enter in oil temperature cooler 18 with compressor 1 in the lubricating oil of high temperature carry out heat exchange, send at last compression in compressor 1, complete a circulation.
Due to the physicochemical properties of carbon dioxide itself, in whole system, compressor 1 is very high at the temperature and pressure in when work, if untimely cooling, the compressor 1 easy carbonization of lubricating oil affects the service behaviour of compressor 1.Therefore, compressor 1 bypass is provided with the oil temperature cooling circuit that suppresses high temperature, heat exchange occurs at oil temperature cooler 18 in the cryogenic gas of the high temperature grease in the loop and regenerator 13 outlets, prevent on the one hand compressor 1 because of self excess Temperature impact normal operation, on the other hand further improving heat exchanging efficiency.By the oil temperature cooling system of compressor 1 is set, reduce lubricating oil temperature, can guarantee the normal operation of compressor 1, promote the whole system performance.
And when obtaining hot water, can obtain the hot water of five different warm areas by the second triple valve 11,12 control.
(1) the first port a and the 3rd port c that are connected in the second triple valve 11 between first via gas cooled branch road and the second tunnel gas cooled branch road open, and the second port b closes, and can obtain high-temperature-hot-water at the 3rd port c of this second triple valve 11;
(2) the first port a, the second port b and the 3rd port c that are connected in the second triple valve 11 between first via gas cooled branch road and the second tunnel gas cooled branch road all open, the second triple valve 12 that is connected between the second tunnel gas cooled branch road and Third Road gas cooled branch road is closed, and can obtain middle high-temperature-hot-water at the 3rd port c that is connected in the second triple valve 11 between first via gas cooled branch road and the second tunnel gas cooled branch road;
Or: be connected in that the first port a of the second triple valve 11 between first via gas cooled branch road and the second tunnel gas cooled branch road and the second port b open and the 3rd port c closes, be connected in that the first port a of the second triple valve 12 between the second tunnel gas cooled branch road and Third Road gas cooled branch road and the 3rd port c open and the second port b closes, also can obtain middle high-temperature-hot-water at the 3rd port c that is connected in the second triple valve 12 between the second tunnel gas cooled branch road and Third Road gas cooled branch road;
(3) the first port a that is connected in the second triple valve 11 between first via gas cooled branch road and the second tunnel gas cooled branch road closes and the second port b and the 3rd port c unlatching, can obtain at the 3rd port c of this second triple valve 11 middle warm water;
Or: be connected in that the first port a of the second triple valve 12 between the second tunnel gas cooled branch road and Third Road gas cooled branch road and the 3rd port c open and the second port b closes, can obtain at the 3rd port c of this second triple valve 12 middle warm water;
(4) the second triple valve 11 that is connected between first via gas cooled branch road and the second tunnel gas cooled branch road is closed, three ports that are connected in the second triple valve 12 between the second tunnel gas cooled branch road and Third Road gas cooled branch road are all opened, and can obtain middle low-temperature water heating at the 3rd port c that is connected in the second triple valve 12 between the second tunnel gas cooled branch road and Third Road gas cooled branch road;
(5) the first port a that is connected in the second triple valve 12 between the second tunnel gas cooled branch road and Third Road gas cooled branch road closes and opens the second port b and the 3rd port c, can obtain low-temperature water heating at the 3rd port c of this second triple valve 12.
Above-mentioned many warm areas carbon dioxide heat-pump Hot water units is provided with many warm areas water storage box reasonable distribution heat energy, be used for storing the heat energy of different temperatures, directly produce the hot water of corresponding warm area for user demand, rather than mix the hot water that obtains different temperatures with normal-temperature water by high-temperature water, not only consider to a certain extent user's water demand, and improved the thermal efficiency of heat pump, also made whole heat pump efficient energy-saving more.
This unit firing rate is fast, produces corresponding warm area hot water for the different demand of client, and pollution-free, reasonable in design, optimum organization, good energy-conserving effect.
Above-described embodiment only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow person skilled in the art scholar can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection domain of the present utility model.
Claims (8)
1. the Hot water units of warm area carbon dioxide heat-pump more than a kind, it is characterized in that: it comprises heat pump and the many warm areas heating system that is in series; Refrigeration working medium in described heat pump and described many warm areas heating system is carbon dioxide;
Described heat pump comprises compressor, regenerator, expansion valve, evaporimeter, oil temperature cooler; The exhaust outlet of described compressor is connected with the inlet end of described many warm areas heating system, the outlet side of described many warm areas heating system is connected with the inlet end of described evaporimeter with described expansion valve through described regenerator, the outlet side of described evaporimeter is connected with the air inlet of described compressor with described oil temperature cooler through described regenerator successively, and the bypass of described compressor and described oil temperature cooler are connected to form the oil temperature cooling system;
Described many warm areas heating system comprises gas cooled branch road and n water storage box that the n road is in parallel, and is respectively arranged with air cooler on each described gas cooled branch road; Be provided with the first triple valve on the described gas cooled branch road in front (n-1) road, described the first triple valve has the first port, the second port and the 3rd port, the first port of described the first triple valve on the described gas cooled branch road of the first via is connected with the gas outlet of described compressor, and the second port of the first triple valve on the first port of described the first triple valve on all the other described gas cooled branch roads and the described gas cooled branch road in last road is connected; Be provided with valve on the described gas cooled branch road in n road, the second port of described the first triple valve on the air inlet port of described valve and the described gas cooled branch road in last road is connected; Before the gas outlet of described valve on the 3rd port and the described gas cooled branch road in described n road of described the first triple valve on (n-1) road described gas cooled branch road be connected with described regenerator through the described air cooler on the gas cooled branch road at its place respectively;
Each described water storage box and one tunnel described corresponding being connected of gas cooled branch road, described water storage box has water inlet and delivery port, and described water inlet is connected with the water source, is connected with the water outlet branch road on described delivery port; Be connected with on described water storage box and add heat passage; The described heat passage that adds is drawn by getting back to after described air cooler in described water storage box by described water storage box; The described water outlet branch road that adjacent two described water storage boxes connect is connected by the second triple valve and is connected to the first port and second port of described the second triple valve, and the 3rd port of described the second triple valve is the water side of described many warm areas heating system.
2. a kind of many warm areas carbon dioxide heat-pump Hot water units according to claim 1, is characterized in that: be connected with gas-liquid separator between the outlet side of described evaporimeter and described regenerator.
3. a kind of many warm areas carbon dioxide heat-pump Hot water units according to claim 1 is characterized in that: described vaporizer side is relative is provided with evaporation fan.
4. a kind of many warm areas carbon dioxide heat-pump Hot water units according to claim 1, it is characterized in that: described many warm areas heating system comprises three tunnel described gas cooled branch roads and three described water storage boxes, and described water storage box comprises the high temperature water storage box that is connected with the described gas cooled branch road of the first via, the middle temperature water storage box that is connected with the second tunnel described gas cooled branch road, the Low Temperature Storage water tank that is connected with the described gas cooled branch road of Third Road; Be provided with the first air cooler on the described gas cooled branch road of the first via, be provided with the second air cooler on the second tunnel described gas cooled branch road, be provided with the 3rd air cooler on the described gas cooled branch road of Third Road.
5. a kind of many warm areas carbon dioxide heat-pump Hot water units according to claim 1 is characterized in that: described water outlet is propped up route described adding on heat passage and is drawn.
6. a kind of many warm areas carbon dioxide heat-pump Hot water units according to claim 1, it is characterized in that: described expansion valve is electric expansion valve.
7. a kind of many warm areas carbon dioxide heat-pump Hot water units according to claim 1, it is characterized in that: described regenerator is valve jacket tubular type regenerator.
8. a kind of many warm areas carbon dioxide heat-pump Hot water units according to claim 1, it is characterized in that: described oil temperature cooler is valve jacket tubular type oil temperature cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220532155 CN202928089U (en) | 2012-10-18 | 2012-10-18 | Multiple-temperature-zone carbon dioxide heat pump hot water unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220532155 CN202928089U (en) | 2012-10-18 | 2012-10-18 | Multiple-temperature-zone carbon dioxide heat pump hot water unit |
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| CN202928089U true CN202928089U (en) | 2013-05-08 |
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| CN 201220532155 Expired - Lifetime CN202928089U (en) | 2012-10-18 | 2012-10-18 | Multiple-temperature-zone carbon dioxide heat pump hot water unit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819502A (en) * | 2015-04-01 | 2015-08-05 | 宁波杭州湾新区祥源动力供应有限公司 | Effective energy-saving device for centralized distribution and use of different temperature layers of hot water |
| CN107429948A (en) * | 2015-03-19 | 2017-12-01 | 三菱电机株式会社 | Heat pump |
| CN108351121A (en) * | 2015-10-23 | 2018-07-31 | 布斯特赫特公司 | Thermal boiler with thermocompressor |
| CN110006194A (en) * | 2019-04-09 | 2019-07-12 | 珠海格力电器股份有限公司 | Air-conditioning system and its control method with drop oil temperature and anti-hydrops function |
| CN110966783A (en) * | 2019-12-23 | 2020-04-07 | 江苏苏净集团有限公司 | Two-stage throttling multi-temperature carbon dioxide heat pump unit |
| CN112212502A (en) * | 2020-10-12 | 2021-01-12 | 青岛海信日立空调系统有限公司 | Directly-heated heat pump hot water system |
-
2012
- 2012-10-18 CN CN 201220532155 patent/CN202928089U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107429948A (en) * | 2015-03-19 | 2017-12-01 | 三菱电机株式会社 | Heat pump |
| CN107429948B (en) * | 2015-03-19 | 2019-12-13 | 三菱电机株式会社 | heat pump system |
| CN104819502A (en) * | 2015-04-01 | 2015-08-05 | 宁波杭州湾新区祥源动力供应有限公司 | Effective energy-saving device for centralized distribution and use of different temperature layers of hot water |
| CN104819502B (en) * | 2015-04-01 | 2017-09-26 | 宁波杭州湾新区祥源动力供应有限公司 | A kind of hot water different temperatures layer centralized distribution effectively saved utilizes device |
| CN108351121A (en) * | 2015-10-23 | 2018-07-31 | 布斯特赫特公司 | Thermal boiler with thermocompressor |
| CN108351121B (en) * | 2015-10-23 | 2020-12-25 | 布斯特赫特公司 | Thermodynamic boiler with thermocompressor |
| CN110006194A (en) * | 2019-04-09 | 2019-07-12 | 珠海格力电器股份有限公司 | Air-conditioning system and its control method with drop oil temperature and anti-hydrops function |
| CN110966783A (en) * | 2019-12-23 | 2020-04-07 | 江苏苏净集团有限公司 | Two-stage throttling multi-temperature carbon dioxide heat pump unit |
| CN112212502A (en) * | 2020-10-12 | 2021-01-12 | 青岛海信日立空调系统有限公司 | Directly-heated heat pump hot water system |
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Granted publication date: 20130508 |