CN107461798B - Air conditioner waste heat collection water supply device - Google Patents
Air conditioner waste heat collection water supply device Download PDFInfo
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- CN107461798B CN107461798B CN201710533304.8A CN201710533304A CN107461798B CN 107461798 B CN107461798 B CN 107461798B CN 201710533304 A CN201710533304 A CN 201710533304A CN 107461798 B CN107461798 B CN 107461798B
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- water
- refrigerant circulating
- heat exchange
- air conditioner
- storage tank
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/0005—Domestic hot-water supply systems using recuperation of waste heat
- F24D17/001—Domestic hot-water supply systems using recuperation of waste heat with accumulation of heated water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/16—Waste heat
- F24D2200/31—Air conditioning systems
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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]
- Y02B30/18—Domestic hot-water supply systems using recuperated or waste heat
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- Engineering & Computer Science (AREA)
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- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses an air conditioner waste heat collection water supply device, which comprises: the air conditioner condenser comprises a refrigerant circulating pipeline and radiating fins arranged on the refrigerant circulating pipeline, wherein the refrigerant circulating pipeline is wound into a coaxial vertical spiral shape with the radius of each spiral gradually increasing, the outline of the edge of the section of the refrigerant circulating pipeline is in a petal shape, the curves of a convex part and a concave part are parabolas, and sharp protruding particles are uniformly arranged on the curved surface of the convex part of the inner wall of the refrigerant circulating pipeline; the heat exchange water tank is coaxially sleeved on the periphery of the air conditioner condenser; the water storage tank is arranged at a shady and cool ventilation position with the same height as the heat exchange water tank, the bottom and the upper part of the water storage tank are communicated with the heat exchange water tank through pipelines, and a water pump is also connected in series on the pipeline at the upper part for communicating the bottom and the upper part of the water storage tank. The invention has the advantages of fast heat dissipation, good cooling effect, and the like, and can avoid scale formation.
Description
Technical Field
The invention relates to the field of household appliances. More particularly, the invention relates to an air conditioner waste heat collection water supply device.
Background
The air conditioner is an electric appliance commonly used in families in summer, in the using process of the air conditioner, hot air blown out of a window can be sensed through an outdoor unit, the discharge of waste heat brings inconvenience to passers-by, and meanwhile, energy is wasted, if the waste heat is transmitted to domestic water, the electricity of a water heater can be saved, and the hot water can be conveniently used by families at any time, but the following problems exist when a conventional air-cooled air conditioner outdoor unit is changed into a water-cooled air conditioner outdoor unit: firstly, the structure of the air-cooled air conditioner condenser is not suitable for a water-cooled air conditioner, and the heat dissipation speed is low; secondly, the condenser of the water-cooled air conditioner outdoor unit is cooled by water, so that water is replaced when the water temperature rises to a certain temperature so as to keep the cooling efficiency of the air conditioner; thirdly, water is easily formed outside the condensation pipe after being heated for a long time, so that the heat exchange effect is reduced.
Disclosure of Invention
The invention aims to provide an air conditioner waste heat collection water supply device which has a high heat dissipation speed and a good cooling effect and can avoid scale formation.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided an air conditioner residual heat collecting water supply device, comprising:
the air conditioner condenser comprises a refrigerant circulating pipeline and radiating fins arranged on the refrigerant circulating pipeline, wherein the refrigerant circulating pipeline is wound into a coaxial vertical spiral shape with the radius of each circle of spiral gradually increasing, an inlet is arranged at the upper end and communicated with an outlet of an air conditioner compressor, an outlet is arranged at the lower end and communicated with an air conditioner throttle valve, the outline of the cross section of the refrigerant circulating pipeline is in a petal shape, curves of a convex part and a concave part are parabolic curves, sharp protruding particles are uniformly arranged on the curved surface of the convex part of the inner wall of the refrigerant circulating pipeline, the radiating fins are in a fan shape with edges connected smoothly, the radiating fins are spirally wound on the curved surface of the convex part of the outer wall of the refrigerant circulating pipeline and are vertical to the outer wall of the refrigerant circulating pipeline;
the heat exchange water tank is cylindrical with an opening at one end, the heat exchange water tank is coaxially sleeved on the periphery of the air conditioner condenser, a plurality of annular horizontal partition plates are arranged on the inner wall of the heat exchange water tank from top to bottom, each annular horizontal partition plate is distributed between two adjacent circles of spirals of the refrigerant circulation pipeline, the inner diameter of each annular horizontal partition plate is larger than the maximum radius of the spiral wound by the refrigerant circulation pipeline, a coaxial annular groove is arranged on the surface of each annular horizontal partition plate, an inverted funnel-shaped annular cover plate is arranged on each annular groove, a lug matched with each annular groove is connected to the edge of the lower plate surface of each annular cover plate, the inclined part of each annular cover plate is an arc-shaped curved surface, a plurality of rib plates are vertically arranged on the curved surface of each annular cover plate along a bus, and the rib, the edge of the annular cover plate is provided with a through notch so as to lead the annular cover plate to pass through the refrigerant circulating pipeline and be placed on the annular groove, and the inner diameter of each annular cover plate is positioned between the spiral radiuses of two adjacent circles of the refrigerant circulating pipeline separated by the annular cover plate;
the water storage tank is the same as the heat exchange water tank in shape and is placed in a shady and cool ventilation position with the same height as the heat exchange water tank, the bottom and the upper part of the water storage tank are communicated with the heat exchange water tank through pipelines, a water pump is also connected in series to the pipeline at the upper part for communicating the bottom and the upper part of the water storage tank, so that the hot water at the upper layer of the heat exchange water tank is pumped into the water storage tank, and the water storage tank is also respectively communicated with a tap water pipeline and a household faucet so as to be connected with tap water and discharge warm water;
the temperature sensor is arranged on the outer wall of the heat exchange water tank, the probe extends into the heat exchange water tank, the temperature sensor is in communication connection with a single chip microcomputer to transmit a temperature signal, and meanwhile the single chip microcomputer is also electrically connected with the water pump to control the water pump to work or stop.
Preferably, the curvature of the parabola of the convex portion of the edge profile of the cross-section of the refrigerant circulating pipe is gentler than that of the parabola of the concave portion.
Preferably, a corrugated pipe is detachably connected to the peripheries of the refrigerant circulating pipe and the radiating fins, and the lower side wall of the corrugated pipe is communicated with a transmitting source of an ultrasonic generator so as to clean scale on the outer wall of the refrigerant circulating pipe.
Preferably, a water purifying device is arranged in the water storage tank to adsorb minerals in water and reduce scaling.
Preferably, the water storage tank is communicated with a water tank of the water heater so as to reduce the energy consumption and time for operating the water heater.
Preferably, the outer wall of the refrigerant circulation pipe is coated with an anticorrosive paint.
Preferably, the heat exchange water tank and the water storage tank are both provided with top covers.
The invention at least comprises the following beneficial effects:
1. according to the density difference of cold water and hot water, cold water is arranged at the lower part and the hot water is arranged at the upper part, so that the spiral refrigerant circulating pipeline with the small upper part and the large lower part better meets the heat dissipation requirement, the path of the refrigerant circulating pipeline in the cold water area is longer, the contact area with the cold water is larger, and the heat dissipation effect is better.
2. Different from a common condenser with convex-concave parts arranged in the radial direction of a condenser pipe, the pipe wall of a refrigerant circulating pipeline is arranged to be convex-concave along the axial direction, so that turbulent flow generated when the refrigerant flows in a gas state can be increased, the refrigerant is contacted with the low-temperature pipe wall to form a liquid state as much as possible, and the liquid refrigerant is directly guided away along the concave part in the pipe, the flow of the refrigerant is accelerated, and more heat exchange spaces are vacated for the gas refrigerant.
3. Because the refrigerant is liquefied in the refrigerant circulating pipeline to form a liquid film, the contact of the subsequent refrigerant gas with the low-temperature pipe wall is prevented, and sharp protruding particles are arranged in the refrigerant circulating pipeline to puncture the liquid film formed by the refrigerant in the liquefaction process, so that the heat dissipation effect is improved.
4. Set up horizontal baffle and the annular apron that contacts with the fin in heat transfer water tank, firstly put into heat transfer water tank with refrigerant circulation pipeline when making things convenient for the staff to assemble in, secondly with the heat of fin transmit the bigger horizontal baffle of area fast for heat transfer process.
5. Through the cooling effect of the water storage tank and the water exchange of the water pump, the refrigerating effect of the air conditioner can be kept as the temperature of water in the heat exchange water tank is not too high, and meanwhile, due to the high heat exchange efficiency of the refrigerant circulating pipeline, when hot water is needed, the water pump can timely pump the hot water of the heat exchange water tank to the water storage tank for people to use.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic sectional view showing a refrigerant circulating tube according to the present invention;
FIG. 3 is a top view of the annular cover plate of the present invention;
fig. 4 is a cross-sectional view of the annular cover plate of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It should be noted that in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 4, the present invention provides an air conditioner residual heat collecting water supply device, including:
an air-conditioning condenser 1, which comprises a refrigerant circulating pipe 2 and a radiating fin 3 arranged on the refrigerant circulating pipe 2, wherein the refrigerant circulating pipe 2 is wound into a coaxial vertical spiral shape with the spiral radius gradually increasing per circle, the inlet is arranged at the upper end and communicated with the outlet of an air-conditioning compressor, the outlet is arranged at the lower end and communicated with an air-conditioning throttle valve, the outline of the cross section of the refrigerant circulating pipe 2 is in a petal shape, the curves of a convex part and a concave part are parabolic curves, sharp protruding particles 4 are uniformly arranged on the curved surface of the convex part on the inner wall of the refrigerant circulating pipe 2, the radiating fin 3 is in a fan shape with the edge smoothly connected, and the radiating fin is spirally wound on the curved surface of the convex part on the outer wall of the refrigerant circulating pipe 2 and is vertical to the outer wall of the;
a heat exchange water tank 5 which is cylindrical with an opening at one end, the heat exchange water tank 5 is coaxially sleeved on the periphery of the air-conditioning condenser 1, a plurality of annular horizontal partition plates 6 are arranged on the inner wall of the heat exchange water tank 5 from top to bottom, each annular horizontal partition plate 6 is distributed between two adjacent circles of spirals of the refrigerant circulating pipeline 2, the inner diameter of each annular horizontal partition plate 6 is larger than the maximum radius of the spiral wound by the refrigerant circulating pipeline 2, a coaxial annular groove is arranged on the surface of each annular horizontal partition plate 6, an inverted funnel-shaped annular cover plate 7 is arranged on each annular groove, a bump matched with each annular groove is connected to the edge of the lower plate surface of each annular cover plate 7, the inclined part of each annular cover plate 7 is an arc-shaped curved surface, and a plurality of rib plates 8 are vertically arranged on the curved surface of each annular, the rib plates 8 are in contact with the radiating fins 3, the edge of the annular cover plate 7 is provided with a through notch so that the annular cover plate 7 can pass through the refrigerant circulating pipeline 2 and be placed on the annular groove, and the inner diameter of each annular cover plate 7 is between the spiral radiuses of two adjacent circles of the refrigerant circulating pipeline 2 separated by the annular cover plate 7;
the water storage tank 9 has the same shape as the heat exchange water tank 5 and is placed in a shady and cool ventilation position with the same height as the heat exchange water tank 5, the bottom and the upper part of the water storage tank 9 are communicated with the heat exchange water tank 5 through pipelines, a water pump 10 is connected in series on the upper pipeline for communicating the bottom and the upper part of the water storage tank 9 so as to pump the upper hot water of the heat exchange water tank 5 into the water storage tank 9, and the water storage tank 9 is also respectively communicated with a tap water pipeline and a household faucet so as to be connected with tap water and discharge warm water;
the temperature sensor is arranged on the outer wall of the heat exchange water tank 5, the probe extends into the heat exchange water tank 5, the temperature sensor is in communication connection with a single chip microcomputer to transmit a temperature signal, and meanwhile the single chip microcomputer is also electrically connected with the water pump 10 to control the water pump 10 to work or stop.
Above-mentioned embodiment is in the use, the air conditioner refrigerant becomes high temperature high-pressure gas after the compressor compression, form medium pressure medium temperature liquid after 2 cooling through refrigerant circulation pipeline, the cooling process is exothermic process, so will produce the heat exchange with the low temperature water in the heat transfer water tank 5, sense the temperature and rise to the threshold value after when temperature sensor, can work through single chip microcomputer control water pump 10, take the hot water of heat transfer water tank 5 to water storage tank 9, again because of hydraulic effect, the cold water of water storage tank 9 bottom will be impressed in heat transfer water tank 5, in order to reduce the temperature in the heat transfer water tank 5, keep the refrigeration effect of air conditioner. According to the density difference of cold water and hot water, cold water is at the lower part and hot water is at the upper part, so the spiral refrigerant circulating pipeline 2 with a small upper part and a big lower part better meets the heat dissipation requirement, the path of the refrigerant circulating pipeline 2 in the cold water area is longer, the contact area with the cold water is larger, and the heat dissipation effect is better. Different from a common condenser with convex-concave parts arranged in the radial direction of a condenser pipe, the pipe wall of the refrigerant circulating pipeline 2 is arranged to be convex-concave along the axial direction, so that turbulent flow can be generated when the refrigerant flows in a gas state, the refrigerant is contacted with the low-temperature pipe wall to form a liquid state as much as possible, and the liquid refrigerant is directly guided away along the concave part in the pipe, the flow of the refrigerant is accelerated, and more heat exchange space is reserved for the gas refrigerant. Since the refrigerant is liquefied in the refrigerant circulation pipe 2 to form a liquid film, which prevents the subsequent contact of refrigerant gas with the wall of the low temperature pipe, sharp protruding particles 4 are arranged in the refrigerant circulation pipe 2 to pierce the liquid film formed by the refrigerant in the liquefaction, thereby improving the heat radiation effect. Set up horizontal baffle 6 and the annular apron 7 of 3 contacts with fin in heat exchange water tank 5, firstly put into heat exchange water tank 5 with refrigerant circulating line 2 when making things convenient for the staff to assemble, secondly transmit the heat of fin 3 to the bigger horizontal baffle 6 of area fast for the heat transfer process. Through the cooling effect of the water storage tank 9 and the water change of the water pump 10, the temperature of the water in the heat exchange water tank 5 can be kept from being too high to influence the refrigeration effect of the air conditioner, and meanwhile, due to the high heat exchange efficiency of the refrigerant circulating pipeline 2, when hot water is needed, the water pump 10 can timely pump the hot water of the heat exchange water tank 5 to the water storage tank 9 for people to use.
In another embodiment, the radian of the parabola of the convex part of the edge profile of the section of the refrigerant circulating pipeline 2 is gentler than that of the parabola of the concave part, so that the area of the radiating fins 3 arranged on the convex part is large, which is beneficial to radiating, and meanwhile, the surface tension of a liquid film formed by cooling and liquefying the refrigerant of the concave part is large, so that the liquid film is not easy to hang on the pipe wall to prevent the refrigerant gas from contacting with the pipe wall.
In another embodiment, a bellows is detachably connected to the peripheries of the refrigerant circulation pipe 2 and the heat sink 3, and a lower side wall of the bellows is communicated with a transmission source of an ultrasonic generator to clean scale on the outer wall of the refrigerant circulation pipe 2.
In another embodiment, a water purifying device is arranged in the water storage tank 9 to adsorb minerals in water and reduce scaling.
In another embodiment, the reservoir 9 is in communication with the water tank of the water heater to reduce the energy consumption and time of operation of the water heater.
In another embodiment, the outer wall of the refrigerant circulation pipe 2 is coated with an anticorrosive paint to prevent corrosion of the refrigerant circulation pipe 2 caused by long-term immersion in water.
In another embodiment, the heat exchange water tank 5 and the water storage tank 9 are both provided with top covers to prevent ash layers in the air from entering the water tank and depositing into scale and dirt.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (7)
1. An air conditioner waste heat collection water supply device comprises: the air conditioner condenser, the water storage tank and the air conditioner condenser inlet are communicated with the air conditioner compressor inlet, and is characterized in that,
the air-conditioning condenser comprises a refrigerant circulating pipeline and radiating fins arranged on the refrigerant circulating pipeline, wherein the refrigerant circulating pipeline is wound into a coaxial vertical spiral shape with the radius of each circle of spiral gradually increased, an inlet is arranged at the upper end and communicated with an outlet of an air-conditioning compressor, an outlet is arranged at the lower end and communicated with an air-conditioning throttle valve, the outline of the cross section of the refrigerant circulating pipeline is in a petal shape, the curves of a convex part and a concave part are parabolic curves, sharp protruding particles are uniformly arranged on the curved surface of the convex part of the inner wall of the refrigerant circulating pipeline, the radiating fins are in a fan shape with edges connected smoothly, and the radiating fins are spirally wound on the curved surface of the convex part of the outer wall of the refrigerant circulating pipeline and are also perpendicular to the outer wall of the refrigerant;
the heat exchange water tank is cylindrical with an opening at one end, the heat exchange water tank is coaxially sleeved on the periphery of the air conditioner condenser, a plurality of annular horizontal partition plates are arranged on the inner wall of the heat exchange water tank from top to bottom, each annular horizontal partition plate is distributed between two adjacent circles of spirals of the refrigerant circulation pipeline, the inner diameter of each annular horizontal partition plate is larger than the maximum radius of the spiral wound by the refrigerant circulation pipeline, a coaxial annular groove is arranged on the surface of each annular horizontal partition plate, an inverted funnel-shaped annular cover plate is arranged on each annular groove, a lug matched with each annular groove is connected to the edge of the lower plate surface of each annular cover plate, the inclined part of each annular cover plate is an arc-shaped curved surface, a plurality of rib plates are vertically arranged on the curved surface of each annular cover plate along a bus, and the rib, the edge of the annular cover plate is provided with a through notch so as to lead the annular cover plate to pass through the refrigerant circulating pipeline and be placed on the annular groove, and the inner diameter of each annular cover plate is positioned between the spiral radiuses of two adjacent circles of the refrigerant circulating pipeline separated by the annular cover plate;
the water storage tank is the same as the heat exchange water tank in shape and is placed in a shady and cool ventilation position with the same height as the heat exchange water tank, the bottom and the upper part of the water storage tank are communicated with the heat exchange water tank through pipelines, a water pump is also connected in series to the pipeline at the upper part for communicating the bottom and the upper part of the water storage tank, so that the hot water at the upper layer of the heat exchange water tank is pumped into the water storage tank, and the water storage tank is also respectively communicated with a tap water pipeline and a household faucet so as to be connected with tap water and discharge warm water;
the temperature sensor is arranged on the outer wall of the heat exchange water tank, the probe extends into the heat exchange water tank, the temperature sensor is in communication connection with a single chip microcomputer to transmit a temperature signal, and meanwhile the single chip microcomputer is also electrically connected with the water pump to control the water pump to work or stop.
2. The apparatus as claimed in claim 1, wherein the curvature of the parabola of the convex portion of the profile of the cross section of the refrigerant circulating pipe is gentler than that of the parabola of the concave portion.
3. The apparatus as claimed in claim 1, wherein a corrugated pipe is detachably connected to the peripheries of the refrigerant circulating pipe and the heat dissipating fin, and a lower sidewall of the corrugated pipe is communicated with a radiation source of an ultrasonic generator to clean scale on the outer wall of the refrigerant circulating pipe.
4. The air conditioner residual heat collecting water supply device as claimed in claim 1, wherein a water purifying device is arranged in the water storage tank to adsorb minerals in water and reduce scaling.
5. The air conditioner residual heat collecting water supply device as claimed in claim 1, wherein the water storage tank is communicated with a water tank of a water heater to reduce energy consumption and time for operating the water heater.
6. The air conditioner residual heat collecting water supply device as claimed in claim 1, wherein the outer wall of the refrigerant circulating pipe is coated with an anticorrosive paint.
7. The air conditioner residual heat collecting water supply device as claimed in claim 1, wherein the heat exchange water tank and the water storage tank are provided with top covers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710533304.8A CN107461798B (en) | 2017-07-03 | 2017-07-03 | Air conditioner waste heat collection water supply device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710533304.8A CN107461798B (en) | 2017-07-03 | 2017-07-03 | Air conditioner waste heat collection water supply device |
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| CN107461798A CN107461798A (en) | 2017-12-12 |
| CN107461798B true CN107461798B (en) | 2020-04-21 |
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| CN111895835B (en) * | 2020-07-17 | 2021-07-27 | 上海交通大学 | Curved surface water tank heat dissipation floor assembly structure |
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| CN2172425Y (en) * | 1993-09-09 | 1994-07-20 | 朱海岩 | Dual-purpose device for air conditioner and hot water supply |
| CN1372122A (en) * | 2001-02-28 | 2002-10-02 | 刘富春 | Pipe material and production method thereof |
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| EP2085705A2 (en) * | 2008-02-04 | 2009-08-05 | Paul Emile Ivars | Combined air conditioning device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2212166Y (en) * | 1994-11-18 | 1995-11-08 | 黄曾新 | Steam and electric heating water barrel |
| TW201033563A (en) * | 2009-03-02 | 2010-09-16 | Univ Ishou | Condensing device |
| CN102287916A (en) * | 2011-06-23 | 2011-12-21 | 海信科龙电器股份有限公司 | Kitchen heat pump device |
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2017
- 2017-07-03 CN CN201710533304.8A patent/CN107461798B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58153089A (en) * | 1982-03-05 | 1983-09-10 | Toyota Kihan:Kk | Heat exchanger |
| CN2172425Y (en) * | 1993-09-09 | 1994-07-20 | 朱海岩 | Dual-purpose device for air conditioner and hot water supply |
| CN1372122A (en) * | 2001-02-28 | 2002-10-02 | 刘富春 | Pipe material and production method thereof |
| CN2608892Y (en) * | 2003-03-20 | 2004-03-31 | 杜明钧 | Air-conditioning energy-saving recoverer |
| EP2085705A2 (en) * | 2008-02-04 | 2009-08-05 | Paul Emile Ivars | Combined air conditioning device |
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