CN104848377A - Dual-heat-source domestic hot water centralized supply system - Google Patents
Dual-heat-source domestic hot water centralized supply system Download PDFInfo
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- CN104848377A CN104848377A CN201410672564.XA CN201410672564A CN104848377A CN 104848377 A CN104848377 A CN 104848377A CN 201410672564 A CN201410672564 A CN 201410672564A CN 104848377 A CN104848377 A CN 104848377A
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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]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention discloses a dual-heat-source domestic hot water centralized supply system which is mainly composed of an air source heat pump unit, a heat accumulation water tank, a plate type heat exchanger, a hot water variable frequency pump, a control cabinet and a water utilization pipe network. The air source heat pump unit and the plate type heat exchanger are arranged in a parallel connection way and are respectively used for preparing hot water for the heat accumulation water tank. The heat accumulation water tank is internally provided with a temperature sensor and a water level sensor. The heat accumulation water tank is also connected with a tap water supplementing pipe water inlet. The heat accumulation water tank water outlet is connected with a hot water supply pipe which is then connected with the water utilization pipe network. Water utilization pipe network back water is connected with the heat accumulation water tank via a hot water back pipe so that circulation is formed. The hot water variable frequency pump is installed on the hot water supply pipe. The beneficial effects of the dual-heat-source domestic hot water centralized supply system are that hot water is prepared by utilizing the mode of air source heat pump unit direct circulating pressurization and plate type heat exchanger indirect auxiliary compensated heating so that water supply safety and reliability are enhanced, the system is energy-saving and economical, operation cost is low, working stability is great and thus the system is convenient for popularization and application.
Description
Technical field
The present invention relates to domestic hot-water's preparing technical field, specifically a kind of two heat source hot water centralizedly supply system.
Background technology
Along with Urbanization Construction and people's living standard improve, the application of domestic hot-water's centralizedly supply system is more and more extensive, current existing domestic hot-water supply system great majority adopt the single source of boiler, heat-exchange unit, electricity, source pump etc. to prepare hot water, although this reduces cost of investment, bring the problem that security reliability is low.
Summary of the invention
The object of the present invention is to provide two heat source hot water centralizedly supply systems that a kind of security reliability is high and result of use is good.
The technical solution adopted for the present invention to solve the technical problems is: two heat source hot water centralizedly supply system is primarily of net for air-source heat pump units, hot water storage tank, plate type heat exchanger, hot water variable frequency pump, switch board and forming with grid, net for air-source heat pump units and plate type heat exchanger are arranged in parallel and are respectively hot water storage tank and prepare hot water, wherein, net for air-source heat pump units is connected to heat pump feed pipe respectively and is connected with hot water storage tank with heat pump cycle pipe, form circulation, and heat pump cycle pump is housed on heat pump cycle pipe fetches water in hot water storage tank, plate type heat exchanger is connected to heat exchange feed pipe respectively and is connected with hot water storage tank with recuperated cycle pipe, form circulation, recuperated cycle pipe is equipped with recuperated cycle pump fetch water in hot water storage tank, plate type heat exchanger is also connected with auxiliary thermal source feed pipe and auxiliary thermal source return pipe respectively, auxiliary thermal source feed pipe is equipped with temperature-sensing valve, at hot water storage tank built with temperature sensor one and level sensor, hot water storage tank is also connected to the water inlet of running water filling pipe, running water filling pipe is equipped with moisturizing magnetic valve, running water filling pipe is equipped with electronic hydrotreater after moisturizing magnetic valve, and running water filling pipe stretches into the bottom water filling of hot water storage tank, hot water storage tank water outlet is connected with hot water feeding pipe, hot water feeding pipe is connected again with grid, circulation is formed by hot water return pipe access hot water storage tank with grid backwater, and hot water return pipe stretches to hot water storage tank bottom, hot water feeding pipe is equipped with hot water variable frequency pump, hot water feeding pipe is equiped with check-valves in turn along water (flow) direction after hot water variable frequency pump, disinfection with hot water device, pressure sensor, temperature sensor two and expansion drum, and hot water feeding pipe stretches into the top water intaking of hot water storage tank, hot water return pipe is equipped with filter, hot water return pipe is equipped with backwater magnetic valve after the filters, hot water return pipe is before backwater magnetic valve, temperature sensor three is provided with after filter.Described net for air-source heat pump units, heat pump cycle pump, temperature sensor one, level sensor, hot water variable frequency pump, disinfection with hot water device, pressure sensor, temperature sensor two, temperature-sensing valve, recuperated cycle pump, temperature sensor three, backwater magnetic valve, electronic hydrotreater are connected with switch board wiring respectively with moisturizing magnetic valve, and in switch board, be equiped with GPRS transceiver module, described GPRS transceiver module mainly carries out real-time radio transmission and reception to relevant data signal, is convenient to realize wireless remote monitering.Described disinfection with hot water device comprises the one in silver ion sterilizer, copper ion sterilizer, ultraviolet light catalyzing titanium dioxide sterilizer, is mainly used in the bacteriums such as the Legionella that disinfection with hot water and killing grows in the hot water.
Operation principle of the present invention is, net for air-source heat pump units obtains heat in air outdoor, and by connect heat pump cycle pipe and heat pump feed pipe direct-type circulating-heating is carried out to hot water storage tank, the heat pump cycle pump be contained on heat pump cycle pipe is fetched water in hot water storage tank, and water delivery absorbs heat to net for air-source heat pump units, then be back to hot water storage tank by heat pump feed pipe and form circulation, realize the present invention utilize net for air-source heat pump units direct circulation heat storage water tank and the water temperature in hot water storage tank is raised, the temperature sensor one be contained in hot water storage tank detects hot water storage tank temperature, when the water outlet constant temperature angle value of hot water storage tank temperature lower than systemic presupposition being detected, recuperated cycle pump startup and fetching water in hot water storage tank, and water delivery carries out indirect to plate type heat exchanger, plate type heat exchanger puts into operation, and plate type heat exchanger will be formed by heat exchange feed pipe and recuperated cycle pipe and hot water storage tank and circulate, the water outlet constant temperature angle value being contained in the temperature-sensing valve foundation systemic presupposition on auxiliary thermal source feed pipe regulates its aperture adaptively, until standard-sized sheet or closedown, and make the hot water temperature in hot water storage tank maintain in the water outlet constant temperature angle value of systemic presupposition, when the water outlet constant temperature angle value of hot water storage tank temperature higher than systemic presupposition being detected, temperature-sensing valve cuts out and cuts off auxiliary thermal source feed pipe automatically, recuperated cycle pump is out of service, namely plate type heat exchanger stops heating, equally, stop between the period of heating at plate type heat exchanger, when the water outlet constant temperature angle value of hot water storage tank temperature higher than systemic presupposition being detected, net for air-source heat pump units is by out of service and enter resting state, and first net for air-source heat pump units will be waken up when the water outlet constant temperature angle value of hot water storage tank temperature lower than systemic presupposition and again put into operation, after treating that net for air-source heat pump units continuation runs the time period reaching systemic presupposition, when hot water storage tank temperature does not reach the water outlet constant temperature angle value of systemic presupposition yet, to automatically start recuperated cycle pump and plate type heat exchanger be put into operation, so repeatedly, realizing the present invention preferentially utilizes net for air-source heat pump units to prepare the energy-saving safety operating pattern of hot water and plate type heat exchanger assist type compensation heating, meanwhile, hot water in hot water storage tank pressurizes through superheated water variable frequency pump, after the process of disinfection with hot water device sterilization, flowed to by hot water feeding pipe and give 24 hours hot-water supplies with grid, hot water variable frequency pump gives frequency conversion and unvarying pressure control relative to pressure sensor according to the water outlet constant pressure value of systemic presupposition, the water level decreasing of hot water storage tank simultaneously, the level sensor be contained in hot water storage tank detects hot water storage tank water level, when the low water level point of hot water storage tank water level lower than systemic presupposition being detected, the moisturizing magnetic valve be contained on running water filling pipe is opened, electronic hydrotreater obtains electric operation, running water filling pipe is toward the bottom water filling of hot water storage tank, hot water storage tank water level rises, when detect hot water storage tank water level rise to systemic presupposition high water level point and above time, moisturizing magnetic valve cuts out automatically, electronic hydrotreater dead electricity is out of service, when detect hot water storage tank water level be in systemic presupposition lack of water water level point and following time, heat pump cycle pump in out of service, recuperated cycle pump and hot water variable frequency pump, and report to the police, stop net for air-source heat pump units simultaneously, close temperature-sensing valve, treat hot water storage tank water level rezime, and during the low water level point of hot water storage tank water level higher than systemic presupposition, report to the police and automatically eliminate, system is automatically restored to normal operating conditions, the temperature sensor three be contained on hot water return pipe detects hot water return pipe temperature, when the guarantee temperature value of hot water return pipe temperature lower than systemic presupposition being detected, backwater magnetic valve is opened automatically, hot water storage tank will be back to by hot water return pipe with the water of grid and form circulation, hot water return pipe temperature raises, when the energy-saving warm angle value of hot water return pipe temperature higher than systemic presupposition being detected, backwater magnetic valve automatically cuts out and cuts off hot water return pipe, so repeatedly, realize hot water of the present invention supply energy-conservation, water-saving result, the guarantee temperature value of described systemic presupposition is preferably lower than the water outlet constant temperature angle value 4 DEG C ~ 8 DEG C of systemic presupposition, the energy-saving warm angle value of described systemic presupposition is preferably lower than the water outlet constant temperature angle value 2 DEG C ~ 4 DEG C of systemic presupposition.
The invention has the beneficial effects as follows, the present invention utilizes net for air-source heat pump units direct circulation to pressurize and plate type heat exchanger indirect assist type compensation mode of heating is prepared hot water, not only increase water-supply reliability, and it is energy-conservation, economical, operating cost is low, good operating stability, easy to utilize.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention.
In figure, 1, net for air-source heat pump units, 2, heat pump feed pipe, 3, heat pump cycle pipe, 4, heat pump cycle pump, 5, temperature sensor one, 6, level sensor, 7, hot water storage tank, 8, heat exchange feed pipe, 9, hot water feeding pipe, 10, recuperated cycle pipe, 11, hot water variable frequency pump, 12, check-valves, 13, disinfection with hot water device, 14, pressure sensor, 15, temperature sensor two, 16, expansion drum, 17, auxiliary thermal source return pipe, 18, auxiliary thermal source feed pipe, 19, temperature-sensing valve, 20, plate type heat exchanger, 21, recuperated cycle pump, 22, GPRS transceiver module, 23, switch board, 24, with grid, 25, hot water return pipe, 26, filter, 27, temperature sensor three, 28, backwater magnetic valve, 29, electronic hydrotreater, 30, moisturizing magnetic valve, 31, running water filling pipe.
Detailed description of the invention
With regard to accompanying drawing 1, of the present invention pair of heat source hot water centralizedly supply system is described in detail below below.
As shown in Figure 1, of the present invention pair of heat source hot water centralizedly supply system is primarily of net for air-source heat pump units 1, hot water storage tank 7, plate type heat exchanger 20, hot water variable frequency pump 11, switch board 23 and forming with grid 24, net for air-source heat pump units 1 and plate type heat exchanger 20 are arranged in parallel and are respectively hot water storage tank 7 and prepare hot water, wherein, net for air-source heat pump units 1 is connected to heat pump feed pipe 2 respectively and is connected with hot water storage tank 7 with heat pump cycle pipe 3, form circulation, and heat pump cycle pump 4 is housed on heat pump cycle pipe 3 fetches water in hot water storage tank 7, plate type heat exchanger 20 is connected to heat exchange feed pipe 8 respectively and is connected with hot water storage tank 7 with recuperated cycle pipe 10, form circulation, recuperated cycle pipe 10 is equipped with recuperated cycle pump 21 fetch water in hot water storage tank 7, plate type heat exchanger 20 is also connected with auxiliary thermal source feed pipe 18 and auxiliary thermal source return pipe 17 respectively, auxiliary thermal source feed pipe 18 is equipped with temperature-sensing valve 19, at hot water storage tank 7 built with temperature sensor 1 and level sensor 6, hot water storage tank 7 is also connected to running water filling pipe 31 and intakes, running water filling pipe 31 is equipped with moisturizing magnetic valve 30, running water filling pipe 31 is equipped with electronic hydrotreater 29 after moisturizing magnetic valve 30, and running water filling pipe 31 stretches into the bottom water filling of hot water storage tank 7, hot water storage tank 7 water outlet is connected with hot water feeding pipe 9, hot water feeding pipe 9 is connected again with grid 24, access hot water storage tank 7 with grid 25 backwater by hot water return pipe 25 and form circulation, and hot water return pipe 25 stretches to hot water storage tank 7 bottom, hot water feeding pipe 9 is equipped with hot water variable frequency pump 11, hot water feeding pipe 9 is equiped with check-valves 12 in turn along water (flow) direction after hot water variable frequency pump 11, disinfection with hot water device 13, pressure sensor 14, temperature sensor 2 15 and expansion drum 16, and hot water feeding pipe 9 stretches into the top water intaking of hot water storage tank 7, hot water return pipe 25 is equipped with filter 26, hot water return pipe 25 is equipped with backwater magnetic valve 28 after filter 26, hot water return pipe 25 is before backwater magnetic valve 28, temperature sensor 3 27 is provided with after filter 26.Described net for air-source heat pump units 1, heat pump cycle pump 4, temperature sensor 1, level sensor 6, hot water variable frequency pump 11, disinfection with hot water device 13, pressure sensor 14, temperature sensor 2 15, temperature-sensing valve 19, recuperated cycle pump 21, temperature sensor 3 27, backwater magnetic valve 28, electronic hydrotreater 29 and moisturizing magnetic valve 30 are connected with switch board 23 wiring respectively, and GPRS transceiver module 22 is equiped with in switch board 23, described GPRS transceiver module 22 mainly carries out real-time radio transmission and reception to relevant data signal, is convenient to realize wireless remote monitering.Described disinfection with hot water device 13 comprises the one in silver ion sterilizer, copper ion sterilizer, ultraviolet light catalyzing titanium dioxide sterilizer, is mainly used in the bacteriums such as the Legionella that disinfection with hot water and killing grows in the hot water.
Operation principle of the present invention is, net for air-source heat pump units 1 obtains heat in air outdoor, and by connect heat pump cycle pipe 3 and heat pump feed pipe 2 pairs of hot water storage tanks 7 carry out direct-type circulating-heating, the heat pump cycle pump 4 be contained on heat pump cycle pipe 3 is fetched water in hot water storage tank 7, and water delivery absorbs heat to net for air-source heat pump units 1, then be back to hot water storage tank 7 by heat pump feed pipe 2 and form circulation, realize the present invention utilize net for air-source heat pump units 1 direct circulation heat storage water tank 7 and the water temperature in hot water storage tank 7 is raised, the temperature sensor 1 be contained in hot water storage tank 7 detects hot water storage tank 7 temperature, when the water outlet constant temperature angle value of hot water storage tank 7 temperature lower than systemic presupposition being detected, recuperated cycle pump 21 starts and fetches water in hot water storage tank 7, and water delivery carries out indirect to plate type heat exchanger 20, plate type heat exchanger 20 puts into operation, and plate type heat exchanger 20 will form circulation by heat exchange feed pipe 8 and recuperated cycle pipe 10 with hot water storage tank 7, be contained in the temperature-sensing valve 19 on auxiliary thermal source feed pipe 18 and regulate its aperture adaptively according to the water outlet constant temperature angle value of systemic presupposition, until standard-sized sheet or closedown, and make the hot water temperature in hot water storage tank 7 maintain in the water outlet constant temperature angle value of systemic presupposition, when the water outlet constant temperature angle value of hot water storage tank 7 temperature higher than systemic presupposition being detected, temperature-sensing valve 19 cuts out and cuts off auxiliary thermal source feed pipe 18 automatically, recuperated cycle pump 21 is out of service, namely plate type heat exchanger 20 stops heating, equally, stop between the period of heating at plate type heat exchanger 20, when the water outlet constant temperature angle value of hot water storage tank 7 temperature higher than systemic presupposition being detected, net for air-source heat pump units 1 is by out of service and enter resting state, and first net for air-source heat pump units 1 will be waken up when the water outlet constant temperature angle value of hot water storage tank 7 temperature lower than systemic presupposition and again put into operation, after treating that net for air-source heat pump units 1 continuation runs the time period reaching systemic presupposition, when hot water storage tank 7 temperature does not reach the water outlet constant temperature angle value of systemic presupposition yet, to automatically start recuperated cycle pump 21 and plate type heat exchanger 20 be put into operation, so repeatedly, realizing the present invention preferentially utilizes net for air-source heat pump units 1 to prepare the energy-saving safety operating pattern of hot water and plate type heat exchanger 20 assist type compensation heating, meanwhile, hot water in hot water storage tank 7 pressurizes through superheated water variable frequency pump 11, after the process of disinfection with hot water device 13 sterilization, flowed to by hot water feeding pipe 9 and give 24 hours hot-water supplies with grid 24, hot water variable frequency pump 11 gives frequency conversion and unvarying pressure control relative to pressure sensor 14 according to the water outlet constant pressure value of systemic presupposition, the water level decreasing of hot water storage tank 7 simultaneously, the level sensor 6 be contained in hot water storage tank 7 detects hot water storage tank 7 water level, when the low water level point of hot water storage tank 7 water level lower than systemic presupposition being detected, the moisturizing magnetic valve 30 be contained on running water filling pipe 31 is opened, electronic hydrotreater 29 obtains electric operation, running water filling pipe 31 is toward the bottom water filling of hot water storage tank 7, hot water storage tank 7 water level rises, when detect hot water storage tank 7 water level rise to systemic presupposition high water level point and above time, moisturizing magnetic valve 30 cuts out automatically, electronic hydrotreater 29 dead electricity is out of service, when detect hot water storage tank 7 water level be in systemic presupposition lack of water water level point and following time, heat pump cycle pump 4 in out of service, recuperated cycle pump 21 and hot water variable frequency pump 11, and report to the police, stop net for air-source heat pump units 1 simultaneously, close temperature-sensing valve 19, treat hot water storage tank 7 water level rezime, and during the low water level point of hot water storage tank 7 water level higher than systemic presupposition, report to the police and automatically eliminate, system is automatically restored to normal operating conditions, the temperature sensor 3 27 be contained on hot water return pipe 25 detects hot water return pipe 25 temperature, when the guarantee temperature value of hot water return pipe 25 temperature lower than systemic presupposition being detected, backwater magnetic valve 28 is opened automatically, hot water storage tank 7 will be back to by hot water return pipe 25 with the water of grid 24 and form circulation, hot water return pipe 25 temperature raises, when the energy-saving warm angle value of hot water return pipe 25 temperature higher than systemic presupposition being detected, backwater magnetic valve 28 automatically cuts out and cuts off hot water return pipe 25, so repeatedly, realize hot water of the present invention supply energy-conservation, water-saving result, the guarantee temperature value of described systemic presupposition is preferably lower than the water outlet constant temperature angle value 4 DEG C ~ 8 DEG C of systemic presupposition, the energy-saving warm angle value of described systemic presupposition is preferably lower than the water outlet constant temperature angle value 2 DEG C ~ 4 DEG C of systemic presupposition.
Claims (5)
1. a two heat source hot water centralizedly supply system is primarily of net for air-source heat pump units, hot water storage tank, plate type heat exchanger, hot water variable frequency pump, switch board and forming with grid, it is characterized in that, net for air-source heat pump units and plate type heat exchanger are arranged in parallel and are respectively hot water storage tank and prepare hot water, wherein, net for air-source heat pump units is connected to heat pump feed pipe respectively and is connected with hot water storage tank with heat pump cycle pipe, and on heat pump cycle pipe, heat pump cycle pump is housed, plate type heat exchanger is connected to heat exchange feed pipe respectively and is connected with hot water storage tank with recuperated cycle pipe, recuperated cycle pipe is equipped with recuperated cycle pump, plate type heat exchanger is also connected with auxiliary thermal source feed pipe and auxiliary thermal source return pipe respectively, auxiliary thermal source feed pipe is equipped with temperature-sensing valve, at hot water storage tank built with temperature sensor one and level sensor, hot water storage tank is also connected to the water inlet of running water filling pipe, hot water storage tank water outlet is connected with hot water feeding pipe, hot water feeding pipe is connected again with grid, circulation is formed by hot water return pipe access hot water storage tank with grid backwater, and hot water return pipe stretches to hot water storage tank bottom, hot water feeding pipe is equipped with hot water variable frequency pump, hot water feeding pipe is equiped with check-valves in turn along water (flow) direction after hot water variable frequency pump, disinfection with hot water device, pressure sensor, temperature sensor two and expansion drum.
2. according to claim 1 pair of heat source hot water centralizedly supply system, it is characterized in that, running water filling pipe is equipped with moisturizing magnetic valve, and running water filling pipe is equipped with electronic hydrotreater after moisturizing magnetic valve, and running water filling pipe stretches into the bottom water filling of hot water storage tank.
3. according to claim 1 pair of heat source hot water centralizedly supply system, it is characterized in that, hot water return pipe is equipped with filter, and hot water return pipe is equipped with backwater magnetic valve after the filters, and hot water return pipe is provided with temperature sensor three before backwater magnetic valve, after filter.
4. according to claim 1 pair of heat source hot water centralizedly supply system, is characterized in that, be equiped with GPRS transceiver module in switch board.
5. according to claim 1 pair of heat source hot water centralizedly supply system, is characterized in that, described disinfection with hot water device comprises the one in silver ion sterilizer, copper ion sterilizer, ultraviolet light catalyzing titanium dioxide sterilizer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410672564.XA CN104848377A (en) | 2014-11-22 | 2014-11-22 | Dual-heat-source domestic hot water centralized supply system |
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| CN201410672564.XA CN104848377A (en) | 2014-11-22 | 2014-11-22 | Dual-heat-source domestic hot water centralized supply system |
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| CN201410672564.XA Pending CN104848377A (en) | 2014-11-22 | 2014-11-22 | Dual-heat-source domestic hot water centralized supply system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196258A (en) * | 2016-06-28 | 2016-12-07 | 四川自然道节能科技有限公司 | Heating water and saving energy system and control method thereof |
| CN107062589A (en) * | 2017-03-29 | 2017-08-18 | 广州鼎富电子科技有限公司 | A kind of air energy heat pump and gas furnace combined heated system and method |
| CN109737482A (en) * | 2019-01-02 | 2019-05-10 | 延边汇众新能源有限公司 | A kind of paddy electricity period accumulation of heat heating system and method |
| CN109959058A (en) * | 2019-03-23 | 2019-07-02 | 上海通华不锈钢压力容器工程有限公司 | A kind of building central domestic hot water supply system with energy conservation and safety precaution function |
| CN112197334A (en) * | 2020-11-16 | 2021-01-08 | 上海有隆工程勘测技术有限公司 | Pipeline heat storage type water source heat pump and air source heat pump two-stage hot water making system |
| CN113375340A (en) * | 2021-05-14 | 2021-09-10 | 同济大学 | Heat pump hot water system with built-in double-temperature phase change efficient energy storage module and control method thereof |
| CN114353169A (en) * | 2021-12-29 | 2022-04-15 | 河南三张节能环保工程有限公司 | Waste heat utilization device applied to heat pump drying and liquid level control method |
-
2014
- 2014-11-22 CN CN201410672564.XA patent/CN104848377A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196258A (en) * | 2016-06-28 | 2016-12-07 | 四川自然道节能科技有限公司 | Heating water and saving energy system and control method thereof |
| CN107062589A (en) * | 2017-03-29 | 2017-08-18 | 广州鼎富电子科技有限公司 | A kind of air energy heat pump and gas furnace combined heated system and method |
| CN109737482A (en) * | 2019-01-02 | 2019-05-10 | 延边汇众新能源有限公司 | A kind of paddy electricity period accumulation of heat heating system and method |
| CN109959058A (en) * | 2019-03-23 | 2019-07-02 | 上海通华不锈钢压力容器工程有限公司 | A kind of building central domestic hot water supply system with energy conservation and safety precaution function |
| CN112197334A (en) * | 2020-11-16 | 2021-01-08 | 上海有隆工程勘测技术有限公司 | Pipeline heat storage type water source heat pump and air source heat pump two-stage hot water making system |
| CN113375340A (en) * | 2021-05-14 | 2021-09-10 | 同济大学 | Heat pump hot water system with built-in double-temperature phase change efficient energy storage module and control method thereof |
| CN114353169A (en) * | 2021-12-29 | 2022-04-15 | 河南三张节能环保工程有限公司 | Waste heat utilization device applied to heat pump drying and liquid level control method |
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