CN213686998U - Heating system - Google Patents
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- CN213686998U CN213686998U CN202022799531.5U CN202022799531U CN213686998U CN 213686998 U CN213686998 U CN 213686998U CN 202022799531 U CN202022799531 U CN 202022799531U CN 213686998 U CN213686998 U CN 213686998U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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Abstract
The utility model provides a heating system, include: the heat dissipation device comprises a heating device, a heat dissipation device and a circulating pipeline connected between the heating device and the heat dissipation device; the circulating pipeline is connected with a solar water heater capable of bearing the operating pressure of the heating system through a pipeline, the solar water heater comprises a hot water storage tank used for collecting and storing solar energy light and heat, and a three-way valve capable of enabling hot water to enter the hot water storage tank is arranged on the circulating pipeline and used for enabling the solar water heater to assist in heating the heating system. The heat collector and the heat storage water tank of the solar water heater are integrated by adopting the heat storage water tank with the heat collection function, so that the occupied area of the device is effectively reduced, and the installation difficulty of equipment is reduced; through the combination of the heat collection function and the water storage function, the solar heat collection and exchange efficiency is improved, the heat loss of hot water transmitted in the solar water heater is reduced, the energy loss waste is greatly reduced, the heat utilization rate is improved, and useful heat gain is improved.
Description
Technical Field
The utility model relates to a heating field especially relates to a heating system.
Background
The solar auxiliary heating system can utilize partial solar energy as an auxiliary heat source to supply heat, has the advantages of low carbon and energy saving, and comprises a heat source, a pipe valve, a heat dissipation tail end and a solar system at present, wherein the solar system mainly comprises a heat collector, a heat storage water tank, a heat collection circulating pump, a pipe valve, a control system and the like, the heat collector is separated from the heat storage water tank, and the heat collection circulating pump carries out secondary heat exchange on the solar energy collected by the solar heat collector through the control system and the pipe valve and collects the solar energy into the heat storage water tank. Because the solar energy flow density is low, solar energy is usually used as an auxiliary energy source for a heating system, and heating methods such as electric heating, a gas furnace, a boiler, an air energy heat pump and the like are needed to further heat water in the heat storage water tank to the temperature needed by heating, and then the water is conveyed to the tail end of the heating system through a heating circulating pump, and the tail end dissipates heat to heat air in a room.
The existing solar auxiliary heating system mainly comprises the following defects:
1. the heat collector is separated from the heat storage water tank, the heat collector and the heat storage water tank have larger volumes, the total occupied space is large, and the installation is inconvenient;
2. after absorbing heat, the solar heat collector exchanges heat with the heat storage water tank for the second time through the heat collection circulating pump to the heat storage water tank, and in the process, due to the fact that pipelines are long and heat exchange is insufficient, large heat loss exists, and energy efficiency is reduced;
3. the whole system has more equipment, the control system has more complex control on each sub-equipment, and operation faults are easy to occur.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model aims to provide a heating system, this heating system can effectively simplify solar energy auxiliary heating system's constitution, saves space and takes up an area of, and has reduced the fault rate of system operation.
The utility model also provides a heating method that adopts above-mentioned heating system to go on, effectively reduced the calorific loss of hot water at the thermal-arrest heat transfer in-process, improved the heat utilization efficiency of solar energy, and can independently select hot water flow direction and passageway under different operating modes.
In order to achieve the above object, the present invention provides a heating system, including: the heat dissipation device comprises a heating device, a heat dissipation device and a circulating pipeline connected between the heating device and the heat dissipation device;
the circulating pipeline is connected with a solar water heater capable of bearing the operating pressure of the heating system through a pipeline, the solar water heater comprises a hot water storage tank used for collecting and storing solar energy light and heat, and a three-way valve capable of enabling hot water to enter the hot water storage tank is arranged on the circulating pipeline and used for enabling the solar water heater to assist in heating the heating system.
Further, the solar water heater comprises a plurality of solar water heaters which are arranged in parallel or in series, and each solar water heater comprises a plurality of the heat storage water tanks.
Furthermore, the circulating pipeline comprises a water return pipe, the hot water storage tank is connected to the water return pipe, and a water inlet pipeline and a water outlet pipeline of the hot water storage tank are connected between the water return pipe and the hot water storage tank respectively.
Furthermore, the three-way valve is a three-way electromagnetic valve, and the three-way electromagnetic valve is arranged at the joint of the water return pipe and the water inlet pipeline.
Furthermore, a three-way check valve is arranged at the joint of the water outlet pipeline and the water return pipe and used for controlling the hot water in the water storage tank to only flow back to the water return pipe.
Furthermore, temperature sensors are arranged on the water return pipe and the hot water storage tank.
Further, the temperature sensor and the three-way electromagnetic valve are electrically connected with the control device.
A heating method adopts the heating system to carry out solar auxiliary heating.
Further, in an initial state that the heating system is full of water, the three-way pipe electromagnetic valve opens towards the water outlet end of the water return pipe and closes towards the water outlet end of the heat storage water tank.
Further, in sunny days, the temperature of water in the hot water storage tank is gradually increased, and when the temperature sensor detects that the temperature of hot water in the hot water storage tank is higher than the temperature of hot water in the water return pipe, the control device controls the three-way electromagnetic valve to close the water outlet end of the water return pipe and open the water outlet end of the water return pipe; when no sunshine exists for a long time, the temperature of the water in the water storage tank is gradually reduced, and when the temperature sensor detects that the temperature of the hot water in the water storage tank is less than or equal to the temperature of the hot water in the water return pipe, the control device controls the three-way electromagnetic valve to open the water outlet end of the water return pipe and close the water outlet end of the heat storage water tank, and the steps are repeated.
In the sunny weather, compared with the condition that the solar auxiliary heating device is not used, the heating system improves the heating return water temperature through the solar water heater auxiliary heating device, the heating device only needs less energy or load to heat to the preset heating outlet water temperature through the self-contained or externally-arranged intelligent control adjusting device, and the purpose of saving energy is achieved.
The heating system integrates the heat collector and the heat storage water tank of the solar water heater by adopting the heat storage water tank with the heat collection function, thereby effectively reducing the occupied area of the device and reducing the installation difficulty of the equipment; by combining the heat collection function and the water storage function, the solar heat collection and exchange efficiency is improved, the heat loss of hot water transmitted in the solar water heater is reduced, the energy loss and waste are greatly reduced, the heat utilization rate is improved, and the effective heat gain is improved; through simplifying the system composition, the control difficulty of the whole system is effectively reduced, and the reliable operation of the heating system is ensured.
The utility model also provides a heating method that adopts above-mentioned heating system to go on, through heating system, can effectively utilize solar energy to heating system's auxiliary heating, realized clean energy's effective utilization, and can be according to the hot water temperature in storage hot-water cylinder and the wet return, the intelligent control hot water flow to and the passageway, when improving the operation intelligence, effectively prevented the thermal loss of system, greatly improved the heat supply operating mode.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of a medium heating system of the present invention.
In the figure:
1-a heating device, 2-a heat dissipation device, 3-a circulation pipeline, 31-a water supply pipe, 32-a water return pipe, 33-a three-way electromagnetic valve, 34-a three-way one-way valve, 35-a water return temperature sensor, 4-a solar water heater, 41-a heat storage water tank, 42-a heat storage water tank temperature sensor, 43-a water inlet pipeline, 44-a water outlet pipeline and 5-an intelligent solar measurement and control instrument.
Detailed Description
In the following description of the present invention, it is to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In order to clarify the technical solution of the present invention, the following description is made in the form of specific embodiments.
As shown in fig. 1, the utility model provides a heating system, include: a heating device 1, a heat dissipation device 2, and a circulation pipeline 3 connected between the heating device and the heat dissipation device; the circulating pipeline 3 is connected with a solar water heater 4 capable of bearing the operating pressure of a heating system through a pipeline, the solar water heater 4 comprises a hot water storage tank 41 capable of collecting and storing solar energy light and heat, and a three-way valve capable of enabling hot water to enter the hot water storage tank 41 is arranged on the circulating pipeline 3 and used for enabling the solar water heater 4 to assist in heating the heating system.
The utility model discloses mainly heat the hot water in heating system through heating device 1, the circulation of hot water in circulation pipeline 3 between heating device 1 and heat abstractor 2, solar water heater 4 of connection on circulation pipeline 3 carries out the auxiliary heating to heating system, and hot water after the temperature rise in the solar water heater 4 through make full use of makes the solar energy as clean energy obtain effective utilization, reaches energy saving and emission reduction's purpose.
The heating device 1 can be a gas wall-mounted furnace, a heat pump, a fuel (coal) boiler or an electric heater and other devices which are applied to independent heating in a single house, and can also be a branch terminal of a heating user for municipal heating. In the heating process, the heating device 1 mainly outputs energy so as to heat hot water radiated by the heat radiator 2 in the heating system, and generally has an intelligent regulation function.
The utility model provides a solar water heater 4 as auxiliary heating is for stifled formula solar water heater that shines, including the hot water storage tank 41 that can thermal-arrest and heat-retaining, hot water storage tank 41 has the function of thermal-arrest and heat-retaining concurrently, has compact structure, and bearing capacity surpasss the characteristics rather than the highest operating pressure of the heating system who forms a complete set and use. Through adopting hot water storage tank 41, compare in current solar water heater, improved the separation setting between heat collector and the heat storage water tank to simplify the tube coupling between heat collector and the heat storage water tank, greatly reduced the occupation of land of tedious equipment on the one hand, on the other hand has improved thermal-arrest heat exchange efficiency, and effectively avoided the calorific loss between 4 inside pipelines of solar water heater, effectively improved heat utilization efficiency and effectual heat.
The utility model provides a be provided with the three-way valve on the circulation pipeline 3, the three-way valve is one and advances two forms of going out, and it specifically includes that hot water returns to the water inlet of three-way valve from heat abstractor 2, and the hot water circulation after the three-way valve will flow through flows back to heating device 1's delivery port to and the hot water baffling after the three-way valve of messenger's flowing through is to the delivery port of hot water storage tank 41 in solar water heater 4. The on-off state of the two water outlets of the three-way valve is controlled, so that hot water can be preheated when baffling and entering the solar water heater 4, and the solar water heater 4 can realize auxiliary heating of a heating system; and at the same time, the hot water can be kept circulating between the heating device 1 and the heat sink 2 when the hot water in the hot water storage tank 41 is low.
In one embodiment, the solar water heater 4 includes a plurality of solar water heaters 4 arranged in series, each solar water heater 4 includes a plurality of hot water storage tanks 41 arranged in parallel, and a connection pipe is arranged between the plurality of hot water storage tanks 41 to connect the plurality of hot water storage tanks 41 into the solar water heater 4 of an integral structure. The hot water storage tank 41 in this embodiment is a stainless steel water tank, the selective heat absorption coating is uniformly coated outside the stainless steel water tank, the hot water temperature in the hot water storage tank 41 can be effectively raised through the selective heat absorption coating, the hot water storage tank 41 has heat collection and heat storage functions, a double-layer internal vacuumizing transparent glass tube is sleeved outside the hot water storage tank to serve as a heat insulation layer, the opening and the stainless steel tube are sealed through polyurethane foam with smaller heat conductivity coefficient, the heat loss of the solar water heater is greatly reduced, and the structure of the existing solar water heater 4 is effectively simplified. The stainless steel water tank is selected for use, so that the pressure-bearing operation can be realized during operation, and the operation requirement that hot water needs to circulate in the heating system under certain pressure is met. Of course, the material of the hot water storage tank can also be low-carbon steel pipe.
The circulation pipeline 3 in this embodiment includes a water return pipe 32 and a water supply pipe 31, the hot water storage tank 41 is specifically connected to the water return pipe 32, and the water return pipe 32 and the hot water storage tank 41 are connected by a water inlet pipeline 43 and a water outlet pipeline 44, respectively. Specifically, in the process of returning the hot water to the heating device 1 through the return pipe 32 after passing through the heat sink 2, the hot water can enter the hot water storage tank 41 in the solar water heater 4 through the water inlet pipe 43, and after the hot water in the hot water storage tank 41 is ejected out of the solar water heater 4, the ejected hot water is conveyed to the heating device 1 through the water outlet pipe 44 for further heating and warming. Through the water inlet pipeline 43 and the water outlet pipeline 44, the heated hot water can be heated by the solar water heater 4, the heating load of the heating device 1 is reduced, and the heat utilization rate of the solar energy is effectively improved. Through the water inlet pipeline 43 and the water outlet pipeline 44 between the water return pipe 32 and the hot water storage tank 41, on one hand, hot water subjected to solar auxiliary heating is favorably ejected out of the hot water storage tank 41, on the other hand, hot water with lower temperature after heat dissipation can enter the hot water storage tank and is subjected to auxiliary heating in the solar water heater 4, circulation of the hot water in the system is kept, heat loss is reduced, and meanwhile, the overall efficiency of the heating system is improved.
In another preferred embodiment, the three-way valve connected to the water return pipe 32 is a three-way solenoid valve 33, and the three-way solenoid valve 33 is specifically disposed at the connection between the water return pipe 32 and the water inlet pipe 43. A three-way check valve 34 is disposed at the connection between the water outlet pipe 44 and the water return pipe 32, and is used for controlling hot water from the top of the hot water storage tank 41 to enter the water return pipe, and then enter the heating device 1 through the water return pipe for further heating and temperature rise. The three-way check valve 34 in this embodiment can only allow hot water in the hot water storage tank 41 to enter the water return pipe 32, and prevent hot water (hot water returned to the heating device) in the water return pipe 32 from flowing back to enter the hot water storage tank 41, thereby effectively promoting the smoothness of hot water circulation in the system, avoiding hot water cross-connection in the system, and simultaneously reliably ensuring that hot water in the hot water storage tank 41 flows into the heating device 1 to be further heated.
In this embodiment, the three-way electromagnetic valve 33 is switched between the water return pipe 32 and the hot water storage tank 41 by a control device included in the heating system, and the control device is preferably an intelligent solar measurement and control instrument 5. Temperature sensors for detecting the temperature of hot water are arranged on the water return pipe 32 and the hot water storage tank 41, specifically, a water return temperature sensor 35 is fixed on the pipe wall of the inner side of the water return pipe 32 in a close fit manner, a hot water storage tank 41 temperature sensor for detecting the temperature of hot water in the hot water storage tank 41 is arranged in the hot water storage tank 41, and the water return temperature sensor 35 and the hot water storage tank 41 temperature sensor are electrically connected with the intelligent solar measurement and control instrument 5. During operation, the backwater temperature sensor 35 and the temperature sensor of the hot water storage tank 41 respectively transmit the hot water temperature signal detected in real time to the intelligent solar measurement and control instrument 5, and the intelligent solar measurement and control instrument 5 selectively opens the water outlet end of the hot water of the backwater pipe 32 on the three-way electromagnetic valve 33 according to the hot water temperature signal and simultaneously closes the water outlet end of the hot water on the other path of outlet of the three-way electromagnetic valve 33.
The utility model also provides an adopt the heating method that above-mentioned heating system goes on, can make the hot water in the heating system carry out the auxiliary heating through solar water heater 4 through this method.
Specifically, when the temperature sensor detects that the hot water temperature T2 in the hot water storage tank 41 is greater than the hot water temperature T1 in the water return pipe 32, the intelligent solar measurement and control instrument 5 controls the three-way electromagnetic valve 33 to close the water outlet end of the water return pipe 32 and open the water outlet end of the hot water storage tank 41; when the temperature sensor detects that the hot water temperature T2 in the hot water storage tank 41 is less than or equal to the hot water temperature T1 in the water return pipe 32, the intelligent solar measurement and control instrument 5 controls the three-way electromagnetic valve 33 to open the water outlet end of the water return pipe 32 and close the water outlet end of the hot water storage tank 41.
In the initial operation state that the heating system is filled with water and the hot water storage tank 41 is filled with water, because the temperature of the hot water in the hot water storage tank 41 is low, the three-way electromagnetic valve 33 opens the water outlet end of the water return pipe 32 and closes the water outlet end of the hot water storage tank 41 to maintain the circulating circulation of the hot water in the heating system, so that the hot water is kept in the heat dissipation device 2 for heat dissipation, enters the heating device 1 for heating after the temperature is reduced, and then enters the heat dissipation device 2 for closed circulation.
Along with the closed circulation of the hot water in the heating system, in sunny days, the temperature of the hot water in the hot water storage tank 41 is continuously increased after the solar water heater 4 is irradiated by sunlight for a period of time. When the hot water temperature T2 detected by the temperature sensor of the hot water storage tank 41 in real time is greater than the hot water temperature T1 detected by the return water temperature sensor 35 in real time, after receiving the temperature signal, the intelligent solar measurement and control instrument 5 automatically controls the three-way electromagnetic valve 33 to close the water outlet end of the return water pipe 32 and open the water outlet end of the hot water storage tank 41, so that the hot water in the return water pipe 32 pushes out the hot water with the temperature T2 in the hot water storage tank 41 from the solar water heater 4, and the hot water flows through the return water pipe 32 and enters the heating device 1 for further heating; when the hot water temperature T2 detected by the temperature sensor of the hot water storage tank 41 in real time is lower than the hot water temperature T1 detected by the return water temperature sensor 35 in real time, after receiving the temperature signal, the intelligent solar measurement and control instrument 5 automatically controls the three-way electromagnetic valve 33 to open the water outlet end of the return water pipe 32 and close the water outlet end of the hot water storage tank 41, so that the hot water with higher temperature in the return water pipe 32 is kept in a closed-loop circulation state inside the heating system, and the loss of heat inside the system is avoided.
In the operation process, when hot water with higher temperature in the hot water storage tank 41 of the solar water heater 4 is completely ejected out, or the outdoor temperature is lower in cloudy days and at night, the temperature of the hot water in the hot water storage tank 41 is lower than or equal to that of the hot water in the water return pipe 32, and if the hot water returns to the heating device 1 through the solar water heater 4, compared with the closed-loop circulation in the system, the waste of heat energy is caused. Under the condition, the intelligent solar measurement and control instrument 5 controls the three-way electromagnetic valve 33 to open to feed water to the water outlet end of the water return pipe 32 again, and simultaneously closes the water outlet end of the hot water storage tank 41, so that hot water backwater does not flow to the solar water heater 4 any more, but directly flows back to the heating device 1 through the water return pipe 32, and the closed cycle is started again. The three-way electromagnetic valve 33 automatically opens or closes the corresponding water outlet end along with the temperature difference change of the hot water temperature T2 of the hot water storage tank 41 and the hot water temperature T1 of the water return pipe 32, solar energy which can be used for heating is utilized, the purpose of saving energy is achieved, the control difficulty of the whole system is reduced, the operation of the heating system is reliable, automatic control inside the system can be formed, and the technical effect of intelligent operation is achieved.
Compare in the heating system who does not set up solar energy boosting, the utility model discloses in because the hot water temperature in the storage water tank 41 is greater than the hot water temperature in the wet return 32, heating device 1 only needs less energy or power can heat up the hot water heating that the circulation returns to predetermined heating leaving water temperature through its from the intelligent control adjusting device who takes or peripheral hardware, when the hot water temperature in the storage water tank 41 is less than or equal to the hot water temperature in the wet return 32, the tee bend motorised valve resumes initial water filling state, the return water does not pass through solar water heater 4, direct reflux carries out closed cycle to heating device 1, through above-mentioned control mode, can reach the purpose of energy saving in long-time circulation is repeated, heating device 1's heating load has effectively been reduced. In non-heating seasons such as summer, an external tap water pipeline and a water outlet pipeline are introduced into the solar water heater 4 contained in the system, so that domestic hot water for bathing and the like can be used, and the technical effect of comprehensively utilizing solar energy is further achieved.
The utility model provides a return water pipe on circulation pipeline is installed to three-way solenoid valve can reduce the heat loss of hot water in closed cycle in-process, from utilizing hot water storage tank in solar energy auxiliary heating's hot water angle, three-way solenoid valve still can connect the delivery pipe on circulation pipeline, connects promptly on heating device carries the hydrothermal delivery pipeline in back of heating to heat abstractor, also can reach equally the technical effect of the utility model. Simultaneously the utility model discloses the water pressure of the inside hot water of well heating system when the circulation can be provided through the circulating pump of heating device self-bring, and the bearing capacity of storing up the hot water jar exceeds heating system's maximum operating pressure, and this also is the technical content that technical staff in this field can directly know on the utility model of this application thinks of the basis, and no longer give unnecessary details here.
It should be noted that the present invention does not limit the specific form, number and connection form of the heat dissipation devices, and the heat dissipation devices that can satisfy the requirement that the hot water forms a closed cycle between the heating device and the heat dissipation device are all within the protection scope of the present invention; in addition, the connecting pipe between the solar water heater and the heating device should be insulated and anti-frozen to reduce heat loss in winter and prevent freezing and blocking of the pipe in bad weather.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (7)
1. A heating system, comprising: the heat dissipation device comprises a heating device, a heat dissipation device and a circulating pipeline connected between the heating device and the heat dissipation device;
the circulating pipeline is connected with a solar water heater capable of bearing the operating pressure of the heating system through a pipeline, the solar water heater comprises a hot water storage tank used for collecting and storing solar energy light and heat, and a three-way valve capable of enabling hot water to enter the hot water storage tank is arranged on the circulating pipeline and used for enabling the solar water heater to assist in heating the heating system.
2. The heating system of claim 1, wherein the solar water heater comprises a plurality of solar water heaters arranged in parallel or in series, and each solar water heater comprises a plurality of the heat storage water tanks.
3. The heating system of claim 1, wherein the circulation pipeline comprises a water return pipe, the hot water storage tank is connected to the water return pipe, and a water inlet pipeline and a water outlet pipeline of the hot water storage tank are respectively connected between the water return pipe and the hot water storage tank.
4. The heating system of claim 3, wherein the three-way valve is a three-way solenoid valve, and the three-way solenoid valve is disposed at a junction of the water return pipe and the water inlet pipe.
5. The heating system of claim 4, wherein a three-way check valve is arranged at the connection between the water outlet pipeline and the water return pipe, and is used for controlling the hot water in the hot water storage tank to only flow back to the water return pipe.
6. The heating system of claim 5, wherein the water return pipe and the heat storage water tank are provided with temperature sensors.
7. The heating system of claim 6, further comprising a control device, wherein the three-way solenoid valve and the temperature sensor are electrically connected to the control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022799531.5U CN213686998U (en) | 2020-11-28 | 2020-11-28 | Heating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022799531.5U CN213686998U (en) | 2020-11-28 | 2020-11-28 | Heating system |
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| CN213686998U true CN213686998U (en) | 2021-07-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377976A (en) * | 2020-11-28 | 2021-02-19 | 北京派捷暖通环境工程技术有限公司 | Heating system and method |
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2020
- 2020-11-28 CN CN202022799531.5U patent/CN213686998U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377976A (en) * | 2020-11-28 | 2021-02-19 | 北京派捷暖通环境工程技术有限公司 | Heating system and method |
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