CN203177282U - Terrestrial heat source and electric instant-heating combined type heating supply system - Google Patents
Terrestrial heat source and electric instant-heating combined type heating supply system Download PDFInfo
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- CN203177282U CN203177282U CN 201320054224 CN201320054224U CN203177282U CN 203177282 U CN203177282 U CN 203177282U CN 201320054224 CN201320054224 CN 201320054224 CN 201320054224 U CN201320054224 U CN 201320054224U CN 203177282 U CN203177282 U CN 203177282U
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Abstract
The utility model discloses a terrestrial heat source and electric instant-heating combined type heating supply system which comprises a heat-preservation water tank assembly. The heat-preservation water tank assembly comprises a water tank inner container, a heating supply coil pipe connected with a heating supply loop assembly is arranged on the inner middle portion of the water tank inner container, and a terrestrial source coil pipe connected with a terrestrial source heat pump assembly is arranged on the inner lower portion of the water tank inner container. A water outlet part of the upper portion of the water tank inner container is connected with a water-using tail end through an electric instant-heating assembly, and the output end of the electric instant-heating assembly is further communicated with the water tank inner container. A hot water collector is used for collecting hot water which has been used and flows out from the water-using tail end and conveying the hot water to a waste heat exchanging device, a water inlet pipeline penetrates through the waste heat exchanging device and is connected to the lower portion of the water tank inner container, and the electric instant-heating assembly, the heating supply loop assembly and the terrestrial source heat pump assembly are electrically connected with a controller assembly. The terrestrial source heat pump assembly and the electric instant-heating assembly are used in a complementation mode, waste heat recovery is carried out, and therefore the energy utilization rate and the unit energy efficiency are improved.
Description
Technical field
The utility model relates to a kind of heat supply heating system of energy mix heating, relates in particular to a kind of geothermal source and electric instant heating combined type heating system.
Background technology
Traditional storage-type and Instant heating type hot water apparatus be generally all by the single source heat supply, as: electric energy, combustion gas, solar energy, air source, water source, geothermal source etc.Owing to be subjected to the restriction of single source, following defective can occur: 1, when device breaks down, often the heat supply heating will be interrupted, and can't guarantee normal instructions for use; 2, be subjected to the restriction of service condition easily, as: the use safety problem of combustion gas, solar energy is in overcast and rainy use etc.; The capital produces certain restriction to the use of hot water apparatus; 3, do not satisfy many-sided heating heat supply requirement, as the place of needs heating simultaneously, heating and heat supply water; 4, single source heating heat supply does not meet the environmental protection and energy saving requirement that country advocates; 5, the hot water of people's use, after using, namely drain (no matter being bathing or other purposes), it is special when environment temperature is low, this secondary water of draining, though temperature not high (20 ~ 30 ℃), relative running water (winter is below 10 ℃), the heat that wherein contains is recycled easily.But the water of main flow custom is not used at present, wastes the utilizable energy source.
The utility model content
At defective and the deficiency of above-mentioned existence, a kind of geothermal source and electric instant heating combined type heating system are proposed.
The technical solution adopted in the utility model is: a kind of geothermal source and electric instant heating combined type heating system are provided, comprise attemperater assembly, electric instant heating assembly, heating loop assembly, earth source heat pump assembly, control assembly, inlet pipeline, water end, hot water gatherer and waste heat switch; Described attemperater assembly comprises inner water tank, and the middle part is provided with heating coil in the inner water tank, and the bottom is provided with ground source tray pipe in the inner water tank; Described heating coil connects described heating loop assembly, and described ground source tray pipe connects described earth source heat pump assembly; Described inner water tank bottom is provided with into water tube head, and inner water tank top is provided with second water inlet tube head and the water outlet tube head, and described water outlet tube head connects described water end through described electric instant heating assembly, and the described second water inlet tube head connects described electric instant heating assembly output; Described hot water gatherer be used for to be collected from water is terminal and is flowed out the hot water after using and it is delivered to described waste heat switch, and described inlet pipeline passes described waste heat switch and is connected to described water inlet tube head; Described electric instant heating assembly, heating loop assembly, earth source heat pump assembly all are electrically connected described control assembly.
Wherein, described electric instant heating assembly comprises that electric instant heating system, electricity are that hot recycle pump and electricity are thermoelectrical magnetic valve; Described electric instant heating system comprise the heating cup, respectively connect heating cup import and outlet electric instant heating water inlet pipe and electric instant heating outlet pipe, be arranged at the controllable silicon of electronic flowmeter on the electric instant heating water inlet pipe, control power output when being used for giving the heating of heating water in the cup, for detection of the leaving water temperature sensor of heating cup leaving water temperature, for detection of the inflow temperature sensor of heating cup inflow temperature; Described electric instant heating water inlet pipe connects the water outlet tube head of described inner water tank, described electric instant heating outlet pipe connects described water end, and electric instant heating outlet pipe also connects the described second water inlet tube head by pipeline, and described electricity is that hot recycle pump and electricity are that thermoelectrical magnetic valve is arranged on this pipeline; Described electronic flowmeter, controllable silicon, leaving water temperature sensor, inflow temperature sensor, electricity are that hot recycle pump and described electricity are that thermoelectrical magnetic valve all is electrically connected described control assembly.
Wherein, described earth source heat pump assembly comprise earth source heat pump unit, ground source heat water-circulating pump, source cold water circulation pump, buried pipe network; Described earth source heat pump unit comprises first closed circuit of the confession flow of refrigerant that is made of compressor, condenser, throttling arrangement and evaporimeter; Described buried pipe network connects described evaporimeter by pipeline and constitutes second closed circuit that flows for first heat-transfer working medium, and to the cold-producing medium heating, source, described ground cold water circulation pump is arranged in this second closed circuit described first heat-transfer working medium in evaporimeter; Described ground source tray pipe connects described condenser by pipeline and constitutes the 3rd closed circuit that flows for second heat-transfer working medium, the heat of described second heat-transfer working medium absorption refrigeration agent in condenser also heats the water in the described inner water tank in ground source tray pipe, and described ground source heat water-circulating pump is arranged in the 3rd closed circuit; Described compressor, ground source heat water-circulating pump, the source cold water circulation pump all be electrically connected described control assembly.
Wherein, described first heat-transfer working medium and described second heat-transfer working medium are anti-icing fluid or water.
Wherein, described heating loop assembly comprise heating circulation pump, floor heating coil pipe or radiator, for detection of the indoor temperature transmitter of indoor temperature; Described floor heating coil pipe or radiator are connected by pipeline with heating coil in the described attemperater assembly, and described heating circulation pump is set on connecting line; Described heating circulation pump and described indoor temperature transmitter are electrically connected described control assembly.
Wherein, described inner water tank is enamel or stainless steel; Inner water tank is socketed with tank shell outward, is filled with insulation bubble material between tank shell and the inner water tank.
Wherein, on the described inlet pipeline safety valve is installed.
Wherein, described ground source tray pipe and heating coil are gapless stainless steel tube or fin stainless-steel pipe.
The beneficial effects of the utility model are: 1, when one group of thermal source unit breaks down, can not influence normal heating heat demand; 2, this combined system adopts earth source heat pump and electric instant heating to use as thermal source complementary, takes the mode of segmentation heating, and carries out waste heat recovery, can improve the efficiency of rate of energy and unit; 3, meet the energy-conserving and environment-protective requirement that country advocates, use the high unit combination of energy utilization rate as far as possible.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment;
Fig. 2 is the structural representation of attemperater assembly in the utility model;
Fig. 3 is the structural representation of electric instant heating system in the utility model;
Fig. 4 is the structural representation of earth source heat pump unit in the utility model.
Label declaration:
1, attemperater assembly; 11, water inlet tube head; 12, source tray pipe; 13, second temperature sensor; 14, heating coil; 15, the second water inlet tube head; 16, first temperature sensor; 17, water outlet tube head; 18, tank upper cover; 19, inner water tank; 101, insulation bubble material; 102, magnesium rod; 103, tank shell; 104, water tank lower cover; 105, water tank footing;
2, heating loop assembly; 21, floor heating coil pipe; 22, heating circulation pump; 23, indoor temperature transmitter;
3, electric instant heating assembly; 31, electric instant heating system; 32, electricity is hot recycle pump; 33, electricity is thermoelectrical magnetic valve; 310, electric instant heating outlet pipe; 311, heating cup; 312, temperature controller; 313, automatically controlled plate; 314, controllable silicon; 316, electric instant heating water inlet pipe; 317, electronic flowmeter;
4, control assembly;
5, earth source heat pump assembly; 51, earth source heat pump unit; 52, ground source heat water-circulating pump; 53, source cold water circulation pump; 54, buried pipe network; 510, compressor; 511, condenser; 512, throttling arrangement; 513, evaporimeter;
6, inlet pipeline; 61, safety valve; 7, water end; 8, hot water gatherer; 9, waste heat switch.
The specific embodiment
By describing technology contents of the present utility model, structural feature in detail, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.
See also Fig. 1, present embodiment provides a kind of geothermal source and electric instant heating combined type heating system, mainly comprises attemperater assembly 1, electric instant heating assembly 3, heating loop assembly 2, earth source heat pump assembly 5, control assembly 4, inlet pipeline 6, water end 7, hot water gatherer 8 and waste heat switch 9.
As shown in Figure 2, attemperater assembly 1 comprises the housing that is made of inner water tank 19, tank shell 103, tank upper cover 18, water tank lower cover 104 and water tank footing 105, wherein tank shell 103 is socketed on outside the inner water tank 19, and is filled with insulation bubble material 101 between the two with 19 insulations of feed-tank inner bag.Inner water tank 19 is enamel or stainless steel, can high pressure resistant and corrosion.In order to prevent from corroding inner water tank 19, also be set with magnesium rod 102 on the inner water tank 19, magnesium rod 102 stretches to inner water tank 19 inside, prevents the inner water tank corrosion by the sacrificial protection principle, reaches to prolong the water tank effect in service life.
The middle part is provided with heating coil 14 in the inner water tank 19, and the bottom is provided with ground source tray pipe 12 in the inner water tank 19.Heating coil 14 connects heating loop assembly 2, provide heat to be the room heating to heating loop assembly 2 by the water in the inner water tank 19, because hot and cold water has lamination in the inner water tank 19, layering rule according to water, required for heating, heating coil 14 is positioned over inner water tank 19 middle parts, the temperature of this regional water is about 45 ℃, after heating coil 14 heat exchange, just meet the requirement of heating.Ground source tray pipe 12 connects earth source heat pump assembly 5, provide the heating of the water in the heat feed-tank inner bag 19 by earth source heat pump assembly 5, for the operational efficiency that improves earth source heat pump assembly 5 and alleviate its operating load, ground source tray pipe 12 is positioned over the water tank bottom, this zone water temperature is low with respect to the top water temperature.Wherein, heating coil 14 and ground source tray pipe 12 materials can be gapless stainless steel tube or fin stainless steel tube.
Electricity instant heating assembly 3, heating loop assembly 2, earth source heat pump assembly 5 all are electrically connected control assembly 4.Control assembly 4 generally comprises controller mainboard, controller housing, holding wire etc., when work, mode by manual direct control button is sent instruction to control assembly 4, control assembly 4 is passed to the automatically controlled plate of corresponding assembly in the heating system with instruction, and automatically controlled plate is carried out corresponding control action and finished required function.In the present embodiment, mainly be the control of facilitating 4 pairs of each parts of control assembly by temperature parameter.Consult Fig. 2, inner water tank 19 tops are provided with first temperature sensor 16, the bottom is provided with second temperature sensor 13, respectively water tank internal upper part and bottom water temperature are detected, the two temperatures sensor all is electrically connected control assembly 4, and control assembly 4 is relatively controlled earth source heat pump assembly 5 and electric instant heating assembly 3 respectively by set pattern according to corresponding water temperature and respective settings value.
The associated working principle of this system is: do not have at the earth source heat pump assembly under the situation of fault, the water in the water tank is heated by the earth source heat pump assembly; When heating, by the heating coil at water tank middle part, the heat that absorbs in the water tank is supplied with the heating loop assembly, thereby the room is heated; When bath water, the hot water on direct water tank top.The shortage of heat of local source heat pump assembly is when providing heat supply, heating, the earth source heat pump assembly is equivalent to water is carried out preheating, electricity instant heating assembly is opened, utilize electric energy to through the heating of the water of electric instant heating assembly and supply with the water end, perhaps make water after the heating reenter water tank and to the heating that circulates of the water in the water tank; Perhaps earth source heat pump assembly and electric instant heating assembly can heat the water in the water tank simultaneously; Simultaneously, utilize waste-heat recovery device, collect the secondary hot water, improve inflow temperature, reduce the power of whole heating heat supply, realize Combination application and the energy-saving effect of heat supply heating.
Adopt the advantage of such scheme to be: 1, when one group of thermal source unit breaks down, can not influence normal heating heat demand; 2, this combined system adopts earth source heat pump and electric instant heating to use as thermal source complementary, takes the mode of segmentation heating, and carries out waste heat recovery, can improve the efficiency of rate of energy and unit; 3, meet the energy-conserving and environment-protective requirement that country advocates, use the high unit combination of energy utilization rate as far as possible.
Please consult Fig. 1 and Fig. 3 simultaneously, in the present embodiment, electric instant heating assembly 3 comprises that electric instant heating system 31, electricity are that hot recycle pump 32 and electricity are thermoelectrical magnetic valve 33.Electricity instant heating system 31 comprise heating cup 311, respectively connect heating cup 311 imports and outlet electric instant heating water inlet pipe 316 and electric instant heating outlet pipe 310, be arranged at the controllable silicon 314 of electronic flowmeter 317 on the electric instant heating water inlet pipe 316, control power output when being used for giving the heating of heating cup 311 water, for detection of the leaving water temperature sensor (not shown) of heating cup 311 leaving water temperatures, for detection of the inflow temperature sensor (not shown) of heating cup 311 inflow temperatures; Electricity instant heating water inlet pipe 316 connects the water outlet tube head 17 of described inner water tank 19, electricity instant heating outlet pipe 310 connects described water end 7, and electric instant heating outlet pipe 310 also connects the described second water inlet tube head 15 by pipeline, and electricity is that hot recycle pump 32 and electricity are that thermoelectrical magnetic valve 33 is arranged on this pipeline.Electronic flowmeter 317, controllable silicon 314, leaving water temperature sensor, inflow temperature sensor, electricity are that hot recycle pump 32 and electricity are that thermoelectrical magnetic valve 33 is electrically connected described control assembly 4 by master control borad 313.
The operation principle of this electricity instant heating assembly 3 is: 1, when water end 7 is opened, electronic flowmeter 317 detects present flow rate, leaving water temperature sensor and inflow temperature sensor leaving water temperature and the inflow temperature of detected current electric instant heating system respectively simultaneously, leaving water temperature and water outlet design temperature are compared, if leaving water temperature 〉=water outlet design temperature, then electric instant heating is not exported; If leaving water temperature＜water outlet design temperature then carries out PID according to present flow rate value, leaving water temperature, inflow temperature, water outlet design temperature and calculates, carry out power-adjustable output by controllable silicon 314, guarantee effluent temperature constancy.2, when heating mode starts, when if the temperature that first temperature sensor 16 in the attemperater assembly 1 detects is lower than certain design temperature, then opening electricity and be thermoelectrical magnetic valve 33 and starting electricity is hot recycle pump 32, heats by electric instant heating system 31, arrives design temperature up to attemperater top.Heating cup 311 tops also are provided with temperature controller 312 and play the safety guarantee effect.
Please consult Fig. 1 and Fig. 4 simultaneously, in the present embodiment, earth source heat pump assembly 5 comprise earth source heat pump unit 51, ground source heat water-circulating pump 52, source cold water circulation pump 53, buried pipe network 54.Earth source heat pump unit 51 comprises first closed circuit of the confession flow of refrigerant that is made of compressor 510, condenser 511, throttling arrangement 512 and evaporimeter 513; Wherein, respectively there are two streams condenser 511 and evaporimeter 513 inside, be respectively for the refrigerant flow path of described flow of refrigerant and the heat-transfer working medium stream that flows for heat-transfer working medium, separate between two streams, make cold-producing medium and heat-transfer working medium between two streams can carry out heat exchange but be separated with the heat conduction good metal.
Buried pipe network 54 constitutes second closed circuit that flows for first heat-transfer working medium by the heat-transfer working medium stream that pipeline connects evaporimeter 513, described first heat-transfer working medium heats cold-producing medium in evaporimeter 513, source, ground cold water circulation pump 53 is arranged in this second closed circuit, and the power of first heat-transfer working medium circulation is provided.
Ground source tray pipe 12 in the attemperater assembly 1 constitutes the 3rd closed circuit that flows for second heat-transfer working medium by the heat-transfer working medium stream that pipeline connects described condenser 511, the heat of described second heat-transfer working medium absorption refrigeration agent in condenser 511 also heats the water in the described inner water tank 19 in ground source tray pipe 12, described ground source heat water-circulating pump 52 is arranged in the 3rd closed circuit, and the power of second heat-transfer working medium circulation is provided.
The operation principle of this earth source heat pump assembly 5 is: compressor 510 starts, compression comes the low-temperature refrigerant gas of flash-pot 513, from 510 mouthfuls of gases of discharging HTHP of compressor, after condenser 511 heat releases, cold-producing medium becomes the liquid of temperature in the high pressure, passes through throttling arrangement 512 afterwards, and cold-producing medium becomes the liquid of low-temp low-pressure, thereby enter the gas that evaporimeter 513 heat absorptions become low-temp low-pressure, gas is sucked back by compressor 510 and finishes a circulation.Wherein, cold-producing medium absorbs heat in the evaporimeter 513 from first heat-transfer working medium, particularly, and by the operation of source, ground cold water circulation pump 53, first heat-transfer working medium in the buried pipe network 54 enters in the evaporimeter 513, absorbed heat by the cold-producing medium in the evaporimeter 513, first heat-transfer working medium low by the temperature after absorbing heat flows out from evaporimeter 513, and flows in buried pipe network 54 loops, the heat that absorption tube is outer, temperature constantly rises, and enters evaporimeter 513 at last again, constantly circulation.The heat of cold-producing medium then is used for the water of heat tracing water tank assembly 1 in the condenser 511, particularly, the cold-producing medium of HTHP is released into heat in second heat-transfer working medium at condenser 511, operation by ground source heat water-circulating pump 52, the second higher heat-transfer working medium of temperature enters the ground source tray pipe 12 that is arranged in attemperater assembly 1, with water heating in the attemperater assembly 1, then second heat-transfer working medium enters in the condenser 511 from cold-producing medium heat absorption, constantly circulation again.
First heat-transfer working medium and second heat-transfer working medium can be anti-icing fluid or water.
Consult Fig. 1, the heating loop assembly 2 of present embodiment comprises floor heating coil pipe 21, heating circulation pump 22 and indoor temperature transmitter 23.Heating coil 14 in floor heating coil pipe 21 and the attemperater assembly 1 is connected by pipeline, and described heating circulation pump 22 is set on connecting line; Heating circulation pump 22 and indoor temperature transmitter 23 are electrically connected described control assembly 4.Indoor temperature transmitter 23 is for detection of indoor temperature, and when when control assembly 4 arranges heating mode, according to the heating temperature of indoor temperature and setting, heating circulation pump 22 optionally starts or closes, thereby the room is heated.Floor heating coil pipe 21 in the present embodiment can also replace with radiator, specifically chooses according to the heating demand.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (8)
1. a geothermal source and electric instant heating combined type heating system, it is characterized in that, comprise attemperater assembly, electric instant heating assembly, heating loop assembly, earth source heat pump assembly, control assembly, inlet pipeline, water end, hot water gatherer and waste heat switch;
Described attemperater assembly comprises inner water tank, and the middle part is provided with heating coil in the inner water tank, and the bottom is provided with ground source tray pipe in the inner water tank; Described heating coil connects described heating loop assembly, and described ground source tray pipe connects described earth source heat pump assembly; Described inner water tank bottom is provided with into water tube head, and inner water tank top is provided with second water inlet tube head and the water outlet tube head, and described water outlet tube head connects described water end through described electric instant heating assembly, and the described second water inlet tube head connects described electric instant heating assembly output; Described hot water gatherer be used for to be collected from water is terminal and is flowed out the hot water after using and it is delivered to described waste heat switch, and described inlet pipeline passes described waste heat switch and is connected to described water inlet tube head;
Described electric instant heating assembly, heating loop assembly, earth source heat pump assembly all are electrically connected described control assembly.
2. geothermal source according to claim 1 and electric instant heating combined type heating system is characterized in that: described electric instant heating assembly comprises that electric instant heating system, electricity are that hot recycle pump and electricity are thermoelectrical magnetic valve;
Described electric instant heating system comprise the heating cup, respectively connect heating cup import and outlet electric instant heating water inlet pipe and electric instant heating outlet pipe, be arranged at the controllable silicon of electronic flowmeter on the electric instant heating water inlet pipe, control power output when being used for giving the heating of heating water in the cup, for detection of the leaving water temperature sensor of heating cup leaving water temperature, for detection of the inflow temperature sensor of heating cup inflow temperature; Described electric instant heating water inlet pipe connects the water outlet tube head of described inner water tank, described electric instant heating outlet pipe connects described water end, and electric instant heating outlet pipe also connects the described second water inlet tube head by pipeline, and described electricity is that hot recycle pump and electricity are that thermoelectrical magnetic valve is arranged on this pipeline;
Described electronic flowmeter, controllable silicon, leaving water temperature sensor, inflow temperature sensor, electricity are that hot recycle pump and described electricity are that thermoelectrical magnetic valve all is electrically connected described control assembly.
3. geothermal source according to claim 1 and electric instant heating combined type heating system is characterized in that: described earth source heat pump assembly comprise earth source heat pump unit, ground source heat water-circulating pump, source cold water circulation pump, buried pipe network;
Described earth source heat pump unit comprises first closed circuit of the confession flow of refrigerant that is made of compressor, condenser, throttling arrangement and evaporimeter; Described buried pipe network connects described evaporimeter by pipeline and constitutes second closed circuit that flows for first heat-transfer working medium, and to the cold-producing medium heating, source, described ground cold water circulation pump is arranged in this second closed circuit described first heat-transfer working medium in evaporimeter; Described ground source tray pipe connects described condenser by pipeline and constitutes the 3rd closed circuit that flows for second heat-transfer working medium, the heat of described second heat-transfer working medium absorption refrigeration agent in condenser also heats the water in the described inner water tank in ground source tray pipe, and described ground source heat water-circulating pump is arranged in the 3rd closed circuit;
Described compressor, ground source heat water-circulating pump, the source cold water circulation pump all be electrically connected described control assembly.
4. geothermal source according to claim 3 and electric instant heating combined type heating system, it is characterized in that: described first heat-transfer working medium and described second heat-transfer working medium are anti-icing fluid or water.
5. geothermal source according to claim 1 and electric instant heating combined type heating system is characterized in that: described heating loop assembly comprises heating circulation pump, floor heating coil pipe or radiator, for detection of the indoor temperature transmitter of indoor temperature; Described floor heating coil pipe or radiator are connected by pipeline with heating coil in the described attemperater assembly, and described heating circulation pump is set on connecting line; Described heating circulation pump and described indoor temperature transmitter are electrically connected described control assembly.
6. according to each described geothermal source of claim 1-5 and electric instant heating combined type heating system, it is characterized in that: described inner water tank is enamel or stainless steel; Inner water tank is socketed with tank shell outward, is filled with insulation bubble material between tank shell and the inner water tank.
7. according to each described geothermal source of claim 1-5 and electric instant heating combined type heating system, it is characterized in that: on the described inlet pipeline safety valve is installed.
8. according to each described geothermal source of claim 1-5 and electric instant heating combined type heating system, it is characterized in that: described ground source tray pipe and heating coil are gapless stainless steel tube or fin stainless-steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320054224 CN203177282U (en) | 2013-01-31 | 2013-01-31 | Terrestrial heat source and electric instant-heating combined type heating supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320054224 CN203177282U (en) | 2013-01-31 | 2013-01-31 | Terrestrial heat source and electric instant-heating combined type heating supply system |
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| Publication Number | Publication Date |
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| CN203177282U true CN203177282U (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320054224 Expired - Fee Related CN203177282U (en) | 2013-01-31 | 2013-01-31 | Terrestrial heat source and electric instant-heating combined type heating supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697165A (en) * | 2015-03-26 | 2015-06-10 | 广东美的暖通设备有限公司 | Water heater |
-
2013
- 2013-01-31 CN CN 201320054224 patent/CN203177282U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697165A (en) * | 2015-03-26 | 2015-06-10 | 广东美的暖通设备有限公司 | Water heater |
| CN104697165B (en) * | 2015-03-26 | 2018-04-27 | 广东美的暖通设备有限公司 | Water heater |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20180131 |
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| CF01 | Termination of patent right due to non-payment of annual fee |