CN107575974B - Indoor refrigeration and heating system - Google Patents
Indoor refrigeration and heating system Download PDFInfo
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- CN107575974B CN107575974B CN201710859835.6A CN201710859835A CN107575974B CN 107575974 B CN107575974 B CN 107575974B CN 201710859835 A CN201710859835 A CN 201710859835A CN 107575974 B CN107575974 B CN 107575974B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
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Abstract
The invention discloses an indoor refrigerating and heating system, and relates to the technical field of energy-saving equipment. The indoor refrigerating and heating system comprises a heating unit and a refrigerating unit, the heating unit is connected with the refrigerating unit, the heating unit comprises a heating water tank, a heat storage water tank, a water inlet pipeline, a water outlet pipeline and a heating pipeline, the heat storage water tank comprises a piston assembly, a cold water chamber and a hot water chamber, the piston assembly is arranged between the cold water chamber and the hot water chamber, and the cold water chamber is positioned above the hot water chamber; the water inlet pipeline is respectively connected with the inlets of the heating water tank and the cold water chamber, the water outlet pipeline is respectively connected with the outlets of the heating water tank and the hot water chamber, and the heating pipeline is annularly arranged outside the heating water tank and the hot water chamber. The invention provides an indoor refrigerating and heating system, which solves the problem that the prior art cannot realize low hot water heating speed when the water tank is large in size by adopting a mode that a heat storage water tank and a heating water tank are arranged in parallel and a heating pipeline is arranged outside the heating water tank and a hot water chamber in a surrounding manner.
Description
Technical Field
The invention relates to the technical field of energy-saving equipment, in particular to an indoor refrigerating and heating system.
Background
The air energy water heater absorbs low-temperature heat energy in air through a refrigerant, and converts the low-temperature heat energy into high-temperature heat energy after being compressed by a compressor so as to improve the water temperature. However, the air energy water heater has an unsatisfactory heating effect in a cold environment, and cannot normally work under a low-temperature condition, which is the biggest technical problem existing in the air energy industry at present.
In the prior art, the air energy water heater with the hot water storage function directly heats cold water and stores the cold water, and the heating mode is integral heating, and the greatest defect of the heating mode is that the hot water generation speed is greatly reduced and the heating time is greatly increased; and if the heating capacity is reduced, the inconvenience of using hot water by a plurality of people is caused, and the contradiction is the biggest bottleneck for preventing the development of the air energy water heater.
In most application scenes, when a compressor is used for heating or refrigerating, only one function of the compressor is used, cold air is wasted during heating, and heat energy is wasted during refrigerating. This results in energy and unit waste in homes and many situations where both cooling and heating are required.
Therefore, a new energy-efficient technique is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide an indoor refrigerating and heating system to solve the problem that the prior art cannot realize low hot water heating speed when a water tank is large in size.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an indoor refrigeration and heating system, includes heating unit and refrigerating unit, heats the unit and is connected with refrigerating unit, heats the unit and includes:
a heating water tank for heating cold water;
the heat storage water tank is connected with the heating water tank in parallel and comprises a piston assembly, a cold water chamber and a hot water chamber, the piston assembly is arranged between the cold water chamber and the hot water chamber, and the cold water chamber is positioned above the hot water chamber;
water inlet pipelines respectively connected with inlets of the heating water tank and the cold water chamber;
the water outlet pipeline is respectively connected with the outlets of the heating water tank and the hot water chamber;
and the heating pipeline is annularly arranged outside the heating water tank and the hot water chamber.
Preferably, the heating water tank comprises a plurality of sub water tanks connected in series, and the low-temperature sub water tank, the medium-temperature sub water tank and the high-temperature sub water tank are arranged in sequence along the direction from the water inlet pipeline to the water outlet pipeline.
Preferably, a check valve is arranged between the high-temperature sub-water tank and the water outlet pipeline.
Preferably, a temperature control valve is further arranged between the high-temperature sub-water tank and the water outlet pipeline, and the temperature control valve and the check valve are arranged in parallel.
Preferably, the high-temperature sub-water tank is provided with a temperature sensor, and the temperature control valve is connected with the temperature sensor.
Preferably, a baffle is arranged in the hot water storage tank.
Preferably, the piston assembly comprises:
the rubber frame is positioned on the baffle plate, can be arranged in the heat storage water tank in a sliding manner, and is internally provided with a cavity;
an inert gas disposed in the chamber of the rubber frame;
the heat insulation layer is positioned on the rubber frame.
Preferably, the heating line is connected to a compressor.
Preferably, the refrigeration system further comprises a refrigeration unit, wherein the refrigeration unit comprises a refrigeration box, and the refrigeration box is connected with the compressor through a refrigeration pipeline.
Preferably, the refrigeration unit further comprises refrigeration equipment, and the refrigeration equipment is connected with the refrigeration box in parallel.
The invention has the beneficial effects that:
the invention provides an indoor refrigerating and heating system, which adopts a mode that a heat storage water tank and a heating water tank are arranged in parallel and heating pipelines are arranged outside the heating water tank and a hot water chamber in a surrounding manner, thereby solving the problem that the prior art cannot realize the slow heating speed of hot water when the volume of the water tank is larger; the plurality of the sub water tanks connected in series are adopted, and the sub water tanks are relatively small in size during heating, so that rapid heating can be realized, heated water can be stored in the hot water chamber, the space of the hot water chamber is increased along with the heating, a large amount of hot water can be correspondingly stored, and the requirement of a plurality of people on using hot water for a long time can be met; the check valve can control water to flow from the sub-water tank to the hot water chamber only, so that backflow is avoided; the temperature control valve and the temperature sensor are adopted, so that the water temperature of hot water can be ensured to meet the temperature required by people all the time and can not be too high or too low; the piston assembly is adopted, so that the cold water chamber and the hot water chamber can be isolated; with a fixed stop, the lowest position of the piston assembly can be defined; the rubber frame is adopted, and inert gas is arranged in the rubber frame, so that the density of the piston can be ensured to float and fall along with the rise and fall of water temperature; the compressor is respectively connected with the refrigerating pipeline and the heating pipeline, so that two useful effects can be generated when the same electric energy is consumed no matter heating and refrigerating are carried out, and the purposes of high efficiency, energy saving and environmental protection are achieved; adopt heat storage water tank and refrigeration case, can guarantee that the cold source that the compressor produced is stored in the refrigeration case when the heating is initiative to refrigeration plant cooling, when the compressor refrigerates for refrigeration plant for the initiative, the heat energy of its production is stored in heat storage water tank.
Drawings
Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which
Fig. 1 is a schematic structural view of an indoor cooling and heating system according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the heating unit of FIG. 1;
fig. 3 is a schematic structural diagram of the hot water storage tank in fig. 2.
In the figure:
1. heating the water tank; 11. a sub-tank; 12. a check valve; 13. a temperature control valve; 14. a temperature sensor;
2. a heat storage water tank; 21. a piston assembly; 211. a baffle plate; 212. a rubber frame; 213. an inert gas; 214. a thermal insulation layer; 22. a cold water chamber; 23. a hot water chamber; 24. a water inlet pipeline; 25. a water outlet pipeline;
3. a compressor; 31. heating the pipeline; 32. a refrigeration circuit;
4. refrigerating box
5. A refrigeration device.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 2, the present embodiment provides an indoor cooling and heating system, including a heating unit and a cooling unit, where the heating unit is connected to the cooling unit, the heating unit includes a heating water tank 1 for heating cold water, a heat storage water tank 2, a water inlet pipeline 24, a water outlet pipeline 25 and a heating pipeline 31, the heat storage water tank 2 is arranged in parallel with the heating water tank 1, the heat storage water tank 2 includes a piston assembly 21, a cold water chamber 22 and a hot water chamber 23, the piston assembly 21 is arranged between the cold water chamber 22 and the hot water chamber 23, and the cold water chamber 22 is located above the hot water chamber 23; the water inlet pipeline 24 is respectively connected with the inlets of the heating water tank 1 and the cold water chamber 22; the water outlet pipeline 25 is respectively connected with the outlets of the heating water tank 1 and the hot water chamber 23; the heating pipe 31 is looped around the outside of the heating water tank 1 and the hot water chamber 23. According to the invention, the problem that the heating speed of hot water is low when the water tank is large in size in the prior art is solved by adopting the mode that the heat storage water tank 2 and the heating water tank 1 are arranged in parallel and the heating pipeline 31 is annularly arranged outside the heating water tank 1 and the hot water chamber 23.
Specifically, as shown in fig. 3, the heating water tank 1 includes a plurality of sub water tanks 11 (only 3 are shown in fig. 3, and the others are not shown, but may not be set to be more than 3), which are connected in series, and the low temperature sub water tank, the medium temperature sub water tank, and the high temperature sub water tank are sequentially arranged along the direction from the water inlet pipeline 24 to the water outlet pipeline 25, and by arranging the three sub water tanks 11, the heat exchange operation can be more sufficiently completed, so that the heat exchange between the heating pipeline 31 and the sub water tanks 11 is sufficient, because the sub water tanks 11 have relatively small volumes during heating, rapid heating can be realized, the efficiency of heat recovery is higher, and the heated water can be stored in the hot water chamber 23, and the space of the hot water chamber 23 increases along with the progress of heating, and accordingly a large amount of hot water can be stored, and. The sub-tanks 11 may be made of stainless steel or other materials with good thermal conductivity, so that the heating pipeline 31 can heat the sub-tanks 11 conveniently. Taking fig. 3 as an example, the low-temperature sub-tank, the medium-temperature sub-tank and the high-temperature sub-tank are sequentially arranged along the direction from the water inlet pipeline 24 to the water outlet pipeline 25, wherein the water inlet pipe of the low-temperature sub-tank is arranged at the bottom of the low-temperature sub-tank, the water outlet pipe of the low-temperature sub-tank is arranged at the top of the low-temperature sub-tank, the water outlet pipe of the low-temperature sub-tank and the water inlet pipe of the medium-temperature sub-tank are the same water pipe, and so on. Valves are arranged at the inlet of the water inlet pipeline 24 and the outlet of the water outlet pipeline 25, when the heating water tank 1 is lack of water, the inlet valve of the water inlet pipeline 24 is opened to feed water, otherwise, the inlet valve is closed; when people use hot water, the outlet valve of the water outlet pipeline 25 is opened to discharge water, and the other way round, the outlet valve is closed.
Specifically, a check valve 12 is arranged between the high-temperature sub-tank and the water outlet pipeline 25, the check valve 12 is used for controlling water flow to flow from the sub-tank 11 to the hot water chamber 23, in the using process, water in the sub-tank 11 needs to flow into the hot water chamber 23 of the heat storage tank 2, and the check valve 12 which can only flow in a single direction can be arranged to avoid backflow. A temperature control valve 13 is further arranged between the high-temperature sub-water tank and the water outlet pipeline 25, the temperature control valve 13 is connected with the check valve 12 in parallel, a temperature sensor 14 is arranged on the high-temperature sub-water tank, and the temperature control valve 13 is connected with the temperature sensor 14. If no heat exchange medium exists in the heating pipeline 31, when heat exchange heating cannot be performed, the temperature of hot water in the hot water chamber 23 will be slowly reduced, and low-temperature water cannot be used; at this time, the temperature control valve 13 is opened to perform backflow, the space of the hot water chamber 23 is reduced, and heating and heat exchange are performed after a heat exchange medium flows in the heating pipeline 31. The temperature control valve 13 can control the switch through the temperature sensor 14, the switch value of the temperature control valve 13 is preset, if the set value is 35 ℃, when the temperature is lower than 35 ℃, the temperature control valve 13 is opened, and the water in the hot water chamber 23 flows back to the sub-water tank 11; when the temperature is 35 ℃ or higher, the thermo valve 13 is closed and no backflow is possible.
Specifically, the shell of the heat storage water tank 2 is cylindrical, the shell structure is divided into two layers, the inner layer is made of transparent materials, the outer layer is made of opaque heat insulation materials, the opaque heat insulation materials are provided with a gap, the gap is formed in the side face of the cylinder, the gap is formed by the transparent heat insulation materials from bottom to top, and the gap is filled with the opaque heat insulation materials. The shell of the heat storage water tank 2 is respectively connected with a hot water supply pipeline (namely a water outlet pipeline 25), a tap water supply pipeline (namely a water inlet pipeline 24) and a connecting pipeline of the heating water tank 1. A baffle 211 and a piston assembly 21 are arranged in the heat storage water tank 2, the piston assembly 21 is located on a horizontal plane, and the diameter of the piston assembly 21 is consistent with the inner diameter of the heat storage water tank 2. The baffle 211 is circular, the outer diameter of the circular ring of the baffle 211 is consistent with the inner diameter of the heat storage water tank 2, the baffle 211 is fixed on the inner wall of the heat storage water tank 2, and the inner diameter of the circular ring of the baffle 211 is 4/5 times of the outer diameter of the circular ring. When the heat storage water tank is placed still, the piston assembly 21 is in contact with the upper surface of the baffle 211, the height position of the piston assembly 21 in the vertical direction is reflected by the shell of the heat storage water tank 2 discontinuously, the vertical height of the piston assembly 21 depends on the storage condition of hot water, and the outer wall of the pipeline of the indoor comprehensive refrigeration and heating system is provided with heat insulation materials.
Specifically, the piston assembly 21 includes a rubber frame 212, an inert gas 213 and a heat insulation layer 214, the rubber frame 212 is located on the baffle 211, the rubber frame 212 is slidably disposed on the inner wall of the heat storage water tank 2, and a cavity is disposed in the rubber frame 212; the inert gas 213 is disposed in the chamber of the rubber frame 212; the insulation layer 214 is located on the rubber frame 212. Wherein the rubber frame 212 may also be made of other heat conductive materials with higher coefficient of thermal expansion, the inert gas 213 may also be high pressure air, and the thermal insulation layer 214 is made of solid thermal insulation material to ensure that the density of the piston assembly 21 is close to that of water, but the density of the overall piston assembly 21 is slightly greater than that of water. When water in the hot water chamber 23 at the lower part of the heat storage water tank 2 is heated, the heat is partially transferred to the frame body made of the heat conduction material with higher coefficient of thermal expansion, the material is heated to expand, the expansion reduces the density of the piston assembly 21, so that the density of the piston assembly 21 is lower than that of water, and finally the piston assembly 21 floats upwards in the heat storage water tank 2; when the water in the hot water chamber 23 of the lower part of the hot water storage tank 2 is cooled, the piston assembly 21 contracts in vertical height due to the reduction of heat, and the contraction increases the density of the piston assembly 21, so that the density of the piston assembly 21 is greater than that of the water, and finally the piston assembly 21 sinks in the hot water storage tank 2. In short, the density of the piston assembly 21 is controlled by the temperature of water in the hot water chamber 23 in the lower portion of the hot water storage tank 2 to change the position of the piston assembly 21, and the resultant force of the buoyancy of water and the gravity of the piston is used as power to push the water to circulate, so that the piston is automatically circulated. When the water inlet pipeline 24 and the water outlet pipeline 25 are both closed, that is, in a non-use state, the space size of the hot water chamber 23 and the cold water chamber 22 can be changed by lifting the piston assembly 21 in the heat storage water tank 2, for example, when cold water in the cold water chamber 22 is pushed into the heating water tank 1, the cold water and the heating pipeline 5 on the heating water tank 1 complete heat exchange, so that rapid heating is realized, heated hot water is stored in the hot water chamber 23, an enough hot water storage space is provided, and the hot water generation speed can be increased. In addition, the inert gas 213 is selected to avoid the gas from moving too vigorously inside the cavity to affect the lifting of the piston assembly 21 during heat exchange.
Specifically, as shown in fig. 1, the present embodiment provides an indoor cooling and heating system, further including a cooling unit, where the cooling unit includes a cooling box 4, the cooling box 4 is connected to a compressor 3 through a cooling pipeline 32, and a heating pipeline 31 is connected to the compressor 3; the refrigerating unit also comprises a refrigerating device 5, and the refrigerating device 5 is connected with the refrigerating box 4 in parallel. The compressor 3 is respectively connected with the refrigerating pipeline 32 and the heating pipeline 31, so that two useful effects can be generated when the same power consumption is used no matter heating and refrigerating are carried out, and the purposes of high efficiency, energy conservation and environmental protection are achieved; adopt heat storage water tank 2 and refrigeration case 4, can guarantee that the cold source that compressor 3 produced is stored in refrigeration case 4 when the heating is initiative to the refrigeration plant cooling, when compressor 3 refrigerates for refrigeration plant 5 for the initiative, the heat energy of its production is stored in heat storage water tank 2. The refrigeration box 4 can store cold for temporarily storing redundant cold sources, and then releases low-temperature and low-pressure refrigerant to the compressor 3, so that the compressor 3 generates high-temperature and high-pressure gas. The refrigeration equipment 5 can be an air conditioner, a refrigerator or a refrigeration cabinet, China is a big population country, and the refrigeration equipment 5 such as the air conditioner, the refrigerator or the refrigeration cabinet is a household common electrical appliance, so that the heat generated by the refrigeration equipment 5 can be recovered to heat, and the purpose of saving energy is achieved.
Specifically, the following explains a dual-purpose machine only by a specific case.
1. The heating water tank 1 has an outer diameter of 0.15m, a height of 1m, an inner diameter of 0.130m, a height of 0.98m, a capacity of 13L 3 and a hot water generation time of 17 min.
2. The hot water storage tank 2 has the outer diameter of 0.8m, the height of 1m, the inner diameter of 0.7m, the height of 0.9m, the capacity of 346L and a coolable compressor of 75 h.
3. The diameter of the heat exchange pipeline part in the discharge pipeline of the compressor 3 is 0.02m, the surface area is 1.77m, and the maximum water temperature can be raised to 78 ℃.
4. The temperature sensor 14 control value is set to 35 ℃.
The data is consulted to know that the power of the 1.5P air conditioner is 1150W, the refrigeration is 3500W and the heat production is 4650W. The positions of the water with various temperatures in the heating barrel are linearly distributed under an ideal state to obtain
t＝1.49v+20
According to the formula
W＝ρCVΔt
Obtaining the total heat by taking the integral of micro elements
And obtaining the time required for the system to reach the normal working state after the system is started, namely the system starting time t' is 17 min. Therefore, the system has short starting time and meets the requirement of the user on instant water use.
According to the formula of convection heat transfer
Q＝AKΔt
Mean logarithmic temperature difference formula
And
ΔT1＝T1-t2，ΔT2＝T2-t1
obtaining the final water temperature t2At 78 ℃. The normal-temperature tap water at 20 ℃ in an ideal state can reach 78 ℃ after convection heat exchange through the system, and the daily requirement of a user on the water temperature is met.
Wherein Q is a heat generation value of 4650W; k is heat conductivity coefficient tubular heat exchange 700; a is the heat dissipation area
1.77m2；
T1、T2The temperature of the working medium of the compressor before and after heat exchange; t is1Taking the value of 85 ℃ and T2Taking a value of 22 ℃; t is t1、t2The temperature of water before and after heat exchange; t is t1The value is 20 ℃;tthe time required for the hot water to fully store the heat storage bin; v is a heat storage bin capacity value 346L; rho is the density of water at 20 ℃ of 998kg/m3(ii) a c is the specific heat capacity of water of 4200J/kg; delta t is the temperature rise value of 58 ℃.
The calculation results show that the design of the example satisfies the requirements
1. The refrigerating capacity is 3500W and the heating capacity is 4650W when the system operates, so that the comprehensive utilization of indoor cold and heat is realized, and the effects of energy conservation and environmental protection are achieved.
2. The system start time t' is 17 min. Therefore, the system has short starting time and meets the requirement of the user on instant water use.
3. The final water temperature is t2At 78 ℃. The normal-temperature tap water at 20 ℃ in an ideal state can reach 78 ℃ after convection heat exchange through the system, and the daily requirement of a user on the water temperature is met.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (4)
1. An indoor refrigerating and heating system is characterized by comprising a heating unit and a refrigerating unit, wherein the heating unit is connected with the refrigerating unit; the heating unit includes:
a heating water tank (1) for heating cold water;
the hot water storage device comprises a hot water storage tank (2), the hot water storage tank (2) and the heating water tank (1) are arranged in parallel, the hot water storage tank (2) comprises a piston assembly (21), a cold water chamber (22) and a hot water chamber (23), the piston assembly (21) is arranged between the cold water chamber (22) and the hot water chamber (23), and the cold water chamber (22) is located above the hot water chamber (23);
a baffle (211) is arranged in the heat storage water tank (2);
the piston assembly (21) comprises: the rubber frame (212) is positioned on the baffle (211), can be arranged in the heat storage water tank (2) in a sliding mode, and is internally provided with a cavity; an inert gas (213) disposed in the chamber of the rubber frame (212); a heat insulating layer (214) on the rubber frame (212);
a water inlet pipeline (24) respectively connected to inlets of the heating water tank (1) and the cold water chamber (22);
a water outlet pipeline (25) which is respectively connected with the outlets of the heating water tank (1) and the hot water chamber (23);
a heating pipeline (31) which is arranged outside the heating water tank (1) and the hot water chamber (23) in a surrounding manner;
the heating water tank (1) comprises a plurality of sub water tanks (11) which are connected in series, and a low-temperature sub water tank, a medium-temperature sub water tank and a high-temperature sub water tank are sequentially arranged along the direction from the water inlet pipeline (24) to the water outlet pipeline (25);
a check valve (12) is arranged between the high-temperature sub water tank and the water outlet pipeline (25);
a temperature control valve (13) is also arranged between the high-temperature sub-water tank and the water outlet pipeline (25), and the temperature control valve (13) is connected with the check valve (12) in parallel;
and a temperature sensor (14) is arranged on the high-temperature sub-water tank, and the temperature control valve (13) is connected with the temperature sensor (14).
2. Indoor cooling and heating system according to claim 1, characterized in that the heating line (31) is connected to a compressor (3).
3. Indoor cooling and heating system according to claim 2, characterized in that the cooling unit comprises a cooling box (4), the cooling box (4) being connected to the compressor (3) by a cooling line (32).
4. An indoor cooling and heating system according to claim 3, wherein the cooling unit further comprises a cooling device (5), the cooling device (5) being arranged in parallel with the cooling box (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710859835.6A CN107575974B (en) | 2017-09-21 | 2017-09-21 | Indoor refrigeration and heating system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710859835.6A CN107575974B (en) | 2017-09-21 | 2017-09-21 | Indoor refrigeration and heating system |
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| CN107575974A CN107575974A (en) | 2018-01-12 |
| CN107575974B true CN107575974B (en) | 2020-11-06 |
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| CN111947240B (en) * | 2020-08-10 | 2021-12-31 | 浙江申永达设备安装有限公司 | Special refrigerating machine room module for rail transit |
| CN113693535B (en) * | 2021-08-25 | 2024-03-26 | 浙江亨德清洗科技有限公司 | Intelligent heating device |
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| CN2689122Y (en) * | 2004-03-29 | 2005-03-30 | 杨颖� | Dynamic cold-hot water separated effective water heaters |
| CN101046338A (en) * | 2007-04-30 | 2007-10-03 | 刘新续 | Heat pump water heater capable of producing hot water and cold water |
| CN201532012U (en) * | 2009-09-28 | 2010-07-21 | 浙江家得乐太阳能有限公司 | Air-source heat pump water heater with function of multistage heating |
| CN201652987U (en) * | 2010-04-23 | 2010-11-24 | 青岛海信日立空调***有限公司 | Novel air conditioning system with cold and hot drinking water supply functions |
| CN102538290A (en) * | 2010-12-02 | 2012-07-04 | 松下电器产业株式会社 | Cold/hot water supply apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101690615B1 (en) * | 2010-08-17 | 2016-12-28 | 엘지전자 주식회사 | Heat pump |
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2017
- 2017-09-21 CN CN201710859835.6A patent/CN107575974B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2689122Y (en) * | 2004-03-29 | 2005-03-30 | 杨颖� | Dynamic cold-hot water separated effective water heaters |
| CN101046338A (en) * | 2007-04-30 | 2007-10-03 | 刘新续 | Heat pump water heater capable of producing hot water and cold water |
| CN201532012U (en) * | 2009-09-28 | 2010-07-21 | 浙江家得乐太阳能有限公司 | Air-source heat pump water heater with function of multistage heating |
| CN201652987U (en) * | 2010-04-23 | 2010-11-24 | 青岛海信日立空调***有限公司 | Novel air conditioning system with cold and hot drinking water supply functions |
| CN102538290A (en) * | 2010-12-02 | 2012-07-04 | 松下电器产业株式会社 | Cold/hot water supply apparatus |
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