CN103776156A - Gas water heater capable of outputting water at constant temperature - Google Patents
Gas water heater capable of outputting water at constant temperature Download PDFInfo
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- CN103776156A CN103776156A CN201410031978.4A CN201410031978A CN103776156A CN 103776156 A CN103776156 A CN 103776156A CN 201410031978 A CN201410031978 A CN 201410031978A CN 103776156 A CN103776156 A CN 103776156A
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- water
- outlet pipeline
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- heat exchanger
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Abstract
The invention discloses a gas water heater capable of outputting water at constant temperature. The gas water heater comprises a circulation loop and a water outlet pipeline; one end of the water outlet pipeline is connected with a water source, and the other end of the water outlet pipeline is connected with a water consumption point; the circulation loop is provided with a primary heat exchanger used for heating circulating water in the circulation loop; a secondary heat exchanger used for heating cold water in the water outlet pipeline is arranged between the circulation loop and the water outlet pipeline. The gas water heater capable of outputting water at constant temperature is provided with the primary and secondary heat exchangers to realize secondary heat exchange of the cold water in the water outlet pipeline, and avoids the problem that the cold water is excessively heated to cause high temperature scalding; moreover, residual cold water in the pipeline of the gas water heater can be recycled and heated, water waste is avoided, and the proper temperature of water in the water outlet pipeline is guaranteed, so that the comfort level of the gas water heater is improved.
Description
Technical field
The present invention relates to a kind of water heater, relate in particular to a kind of gas heater that can constant-temperature effluent.
Background technology
At present, most gas heaters of the prior art all adopt fuel gas buring to produce after heat, directly heat copper main heat exchanger; current provide to using water spot after main heat exchanger heating; the advantage of this gas heater be simple in structure, volume compact, be easy to install; but comfort level is poor; external condition (cold water temperature, flow, gaseous-pressure; strong wind etc.) once change, water temperature should not be controlled; Especially summer, a lot of domestic running water flows (as 4L/min) on the low side, but cold water temperature higher (as 30 degree), the minimum heating power of gas heater of the prior art is generally at 5-6kW, and current are after such gas heater heating, and leaving water temperature will reach 49 degree left and right, far beyond the have a bath normal temperature of 38-42 degree of normal person, if discharge is less, leaving water temperature will be higher, and the danger of scalding very easily occurs.
Summary of the invention
The problem existing for prior art, the object of this invention is to provide a kind of gas heater that can constant-temperature effluent, and this water heater can guarantee that the water temperature of gas heater is constant effectively, avoids water temperature that high temperature occurs higher than design temperature and scalds.
Object of the present invention is achieved through the following technical solutions:
A kind of gas heater that can constant-temperature effluent, comprise closed circuit and outlet pipeline, described outlet pipeline one end is connected with water source, the other end be connected with water spot, on described closed circuit, be provided with the main heat exchanger for recirculated water in heat cycles loop, between described closed circuit and described outlet pipeline, be provided with the secondary heat exchanger for described outlet pipeline cold water is heated.
Further, described outlet pipeline is at described secondary heat exchanger and be describedly provided with tank between with water spot, in described tank, be provided with electric heater unit and attemperating unit, described tank and described with being connected with water return pipeline between water spot, is provided with back water pump on described water return pipeline.
Further, be describedly also provided with temperature sensor with water spot, described temperature sensor is electrically connected and controls the unlatching of described back water pump or cut out with described back water pump.
Further, described electric heater unit is electrothermal tube or electric-heating belt.
Further, on described water return pipeline, be provided with check valve, described check valve allows water in described water return pipeline to flow to described tank from described with water spot.
Further, the outer wall of described tank is provided with insulation material.
Further, described insulation material is the one in mineral wool, polyurethane and polystyrene foam plastics.
Further, described tank is made up of the one in stainless steel, carbon steel, copper and engineering plastics.
Further, described main heat exchanger is combustion gas fire row, and described secondary heat exchanger is plate type heat exchanger.
Further, in described closed circuit, be provided with circulating pump, in described outlet pipeline, be provided with out water pump.
Gas heater that can constant-temperature effluent provided by the invention has been realized the secondary heat exchange to cold water in outlet pipeline by main heat exchanger and secondary heat exchanger are set, avoid occurring that the problem that high temperature is scalded is occurred by superheated cold water, in addition, the present invention can also reclaim heating to cold water remaining in gas heater pipeline, avoid water waste, guarantee the suitable temperature of current in outlet pipeline simultaneously, thereby improved the comfort level of gas heater.
Accompanying drawing explanation
Fig. 1 is a kind of gas heater schematic diagram that preferably can constant-temperature effluent of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, a preferred embodiment of the present invention is described in detail.Wherein identical parts represent with identical Reference numeral.It should be noted that, word 'fornt', 'back', " left side ", " right side ", "up" and "down" that use is described below refer to the direction in accompanying drawing, and word " interior " and " outward " refer to respectively the direction towards or away from specific features geometric center.
As shown in Figure 1, gas heater that can constant-temperature effluent provided by the invention comprises closed circuit 1 and outlet pipeline 2, described outlet pipeline 2 one end are connected with water source, the other end be connected with water spot, on described closed circuit 1, be provided with the main heat exchanger 3 for recirculated water in heat cycles loop, between described closed circuit 1 and described outlet pipeline 2, be provided with the secondary heat exchanger 4 for heating outlet pipeline 2 cold water.
When use, utilize described main heat exchanger 3 to heat the recirculated water in described closed circuit 1, recirculated water after heating circulates in described closed circuit 1, and carry out heat exchange at the cold water when the described secondary heat exchanger 4 and in described outlet pipeline 2, the heated rear flow direction of cold water in described outlet pipeline 2 is constantly consumed with water spot, recirculated water in described closed circuit 1 is after secondary heat exchanger 4 heat exchange, temperature declines and again flows to main heat exchanger 3 and heats, so constantly circulation, realize using the recirculated water heating to the cold water in outlet pipeline 2 as thermal medium in described closed circuit.
For the mobile power that provides of water in closed circuit 1 and outlet pipeline 2 is provided, the present embodiment preferably arranges circulating pump in described closed circuit 1, and set out water pump in described outlet pipeline 2, described circulating pump and described in go out water pump can any water pump known in those skilled in the art, repeat no more herein.
The present invention is by the temperature of the recirculated water in controlled circulation loop 1, avoids cold water in outlet pipeline 2 by superheated, avoids the cool water heating in outlet pipeline 2 to exceed design temperature, thereby effectively guaranteed by the water temperature of water spot constant.
As a preferred embodiment of the present invention, the main heat exchanger 3 of the present embodiment is combustion gas fire row, and secondary heat exchanger 4 is plate type heat exchanger.The described combustion gas fire row efficiency of heating surface is high, can heat the recirculated water in closed circuit 1 rapidly, and plate type heat exchanger can continue and stably heat exchange the cold water in outlet pipeline 2, be therefore easier to control heating-up temperature, being convenient to provides to EXIT POINT the hot water that water temperature is constant.Certainly, above-mentioned plate type heat exchanger is only the preferred secondary heat exchanger of the one of the present embodiment, and the present invention can also adopt other applicable heat exchanger known in those skilled in the art, and for example, described secondary heat exchanger can also adopt double pipe heat exchanger.In order to extend the service life of this gas heater, main heat exchanger 3 in the present embodiment is preferably made of copper, described secondary heat exchanger 4 is preferably made up of stainless steel, in addition, the present invention can also improve further by increasing the wall thickness of main heat exchanger 3 and secondary heat exchanger 4 service life and the reliability of this device.
As a preferred embodiment of the present invention, described outlet pipeline 2 is at described secondary heat exchanger 4 and be describedly provided with tank 5 between with water spot, described tank 5 is for reclaiming the cold water of outlet pipeline 2, in described tank 5, be provided with electric heater unit and attemperating unit, described electric heater unit is for heating the cold water in tank 5, attemperating unit be heated temperature be controlled at be applicable to using or default temperature range in, thereby use coolant-temperature gage that water spot flows out suitable, use water spot to flow out rapidly hot water, be convenient to direct use, reduce the discharge capacity of cold water.What those skilled in the art should understand that is, the present invention also can adopt gas-operated thermal bath facility to heat the cold water in tank 5, but because gas-operated thermal bath facility need to start blower fan, front cleaning is carried out in combustion chamber and smoke exhaust pipe, consuming time longer, and blower fan does noise increasing in man-hour, therefore the present invention adopts the electric heater unit that noise is less to substitute traditional gas-operated thermal bath facility, thereby realize the Fast Heating of the cold water in tank 5, effectively reduce by water spot outflow hot water spent time, reduce cooled water discharge amount.
As a preferred embodiment of the present invention, the electric heater unit of the present embodiment is electrothermal tube or electric-heating belt, described attemperating unit is preferably Kick type temperature controller, described Kick type temperature controller is a kind of using the bimetal leaf after constant temperature as thermo-responsive reaction component, the heat producing in the time that the water temperature in tank raises is delivered on bimetal leaf, for example, in the time that water temperature reaches preset temperature (35 ℃), contact is disconnected or closure by bi-metal plate deformed; Below temperature drops to design temperature time, the rapid reinstatement of bimetal leaf, makes the closing of contact or disconnection, reaches the object that is switched on or switched off circuit, thereby realizes temperature control.Certainly, described electric heater unit and attemperating unit are only a preferred embodiment of the present invention, and the present invention can also adopt other device that is applicable to carrying out electrical heating and temperature control known in those skilled in the art, repeats no more herein.
On the basis of above-described embodiment, the tank 5 of the present embodiment is preferably made up of the one in stainless steel, carbon steel, copper and engineering plastics, certainly, tank 5 of the present invention is not limited to above-mentioned material, can also adopt other material with resistance to elevated temperatures known in those skilled in the art, repeat no more herein.For the hot water in tank 5 is incubated, the outer wall of the tank 5 of the present embodiment is preferably provided with insulation material, and described insulation material is preferably the one in mineral wool, polyurethane and polystyrene foam plastics.Certainly, the selection of above-mentioned insulation material is only a preferred embodiment of the present invention, and those skilled in the art can also select applicable tank 5 materials and insulation material according to actual needs, repeat no more herein.
Tank 5 of the present invention and described with being connected with water return pipeline 6 between water spot, on described water return pipeline 6, be also provided with back water pump, the present invention utilizes back water pump that the cold water of the outlet pipeline 2 interior remnants with between water spot and tank 5 is looped back to tank 5, thereby be convenient to tank 5 cold water in pipeline is carried out to post bake, back water pump provides power for cold-water reflux, avoid because tank 5 and with between water spot due to highly or angle problem cause cold water in pipeline cannot automatic back flow to tank 5.Visible, the present invention utilizes water return pipeline 6 and back water pump can reduce further the discharge capacity of cold water, reduce and wait for the time of flowing out hot water, make tank 5 and loop back in tank 5 by water return pipeline 6 with the cold water between water spot, the cold water in outlet pipeline 2 carries out after post bake again from discharging with water spot in tank 5.
When use, if the coolant-temperature gage flowing out with water spot is too low, can open the back water pump on electric heater unit and the water return pipeline 5 in tank 5 of the present invention, back water pump is circulated to the cold water in outlet pipeline 2 in tank 5, electric heater unit in tank 5 carries out heat temperature raising to it, owing to adopting electrically heated mode to heat cold water to tank 5, therefore the present invention is without more front cleaning being carried out in combustion chamber and smoke exhaust pipe, therefore the cold water in tank 1 can obtain Fast Heating, effectively reduce the heat time, make delivery port can flow out fast hot water.
Certainly, the present invention also can be preferably at the described water spot set temperature sensor of using, and described temperature sensor is electrically connected and controls the unlatching of described back water pump or cut out with described back water pump.When described temperature sensor monitors is to the temperature of the described outflow water with water spot for example, during lower than predetermined value (25 ℃), temperature sensor sends enabling signal to the back water pump on water return pipeline 6, back water pump is circulated to the cold water in outlet pipeline 2 in tank 5, and the electric heater unit in tank 5 can carry out heat temperature raising to cold water.
On water return pipeline 6 of the present invention, be also preferably provided with check valve, described check valve allows water in described water return pipeline 6 from flow to described tank 5 with water spot, thereby while preventing from not starting electric heater unit, the cold water in tank 5 is from the interior outflow of water return pipeline 6.Those skilled in the art it should be noted, it is only a kind of preferred version of the present embodiment that check valve is set on water return pipeline 6, the present invention can also adopt known in those skilled in the art other can make the mode of the water one-way flow in water return pipeline 6, for example, can by different arrange angle realize water in water return pipeline 6 from water spot used the one-way flow towards described tank 5.
In sum, gas heater that can constant-temperature effluent provided by the invention heats the cold water in outlet pipeline by the secondary heat exchange mode of main heat exchanger and secondary heat exchanger, thereby effectively avoid occurring cold water by superheated and higher than the problem of design temperature, in addition, the present invention also arranges the tank that can be used in cold water in heating outlet pipeline at secondary heat exchanger with between with water spot, effectively reduce the discharge capacity of cold water, reduce and waited for the time of flowing out hot water, finally reach the more stable object of water temperature of the outflow water making in outlet pipeline.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
- One kind can constant-temperature effluent gas heater, it is characterized in that, comprise closed circuit and outlet pipeline, described outlet pipeline one end is connected with water source, the other end be connected with water spot, on described closed circuit, be provided with the main heat exchanger for recirculated water in heat cycles loop, between described closed circuit and described outlet pipeline, be provided with the secondary heat exchanger for described outlet pipeline cold water is heated.
- 2. gas heater that can constant-temperature effluent according to claim 1, it is characterized in that, described outlet pipeline is at described secondary heat exchanger and be describedly provided with tank between with water spot, in described tank, be provided with electric heater unit and attemperating unit, described tank and described with being connected with water return pipeline between water spot, is provided with back water pump on described water return pipeline.
- 3. gas heater that can constant-temperature effluent according to claim 2, is characterized in that, is describedly also provided with temperature sensor with water spot, and described temperature sensor is electrically connected and controls the unlatching of described back water pump or cut out with described back water pump.
- 4. gas heater that can constant-temperature effluent according to claim 2, is characterized in that, described electric heater unit is electrothermal tube or electric-heating belt.
- 5. gas heater that can constant-temperature effluent according to claim 2, is characterized in that, on described water return pipeline, is provided with check valve, and described check valve allows water in described water return pipeline to flow to described tank from described with water spot.
- 6. gas heater that can constant-temperature effluent according to claim 2, is characterized in that, the outer wall of described tank is provided with insulation material.
- 7. gas heater that can constant-temperature effluent according to claim 6, is characterized in that, described insulation material is the one in mineral wool, polyurethane and polystyrene foam plastics.
- 8. gas heater that can constant-temperature effluent according to claim 2, is characterized in that, described tank is made up of the one in stainless steel, carbon steel, copper and engineering plastics.
- According to described in claim 1-8 any one can constant-temperature effluent gas heater, it is characterized in that, described main heat exchanger is combustion gas fire row, described secondary heat exchanger is plate type heat exchanger.
- According to described in claim 1-8 any one can constant-temperature effluent gas heater, it is characterized in that, in described closed circuit, be provided with circulating pump, in described outlet pipeline, be provided with out water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410031978.4A CN103776156A (en) | 2014-01-23 | 2014-01-23 | Gas water heater capable of outputting water at constant temperature |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410031978.4A CN103776156A (en) | 2014-01-23 | 2014-01-23 | Gas water heater capable of outputting water at constant temperature |
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| CN103776156A true CN103776156A (en) | 2014-05-07 |
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| CN201410031978.4A Pending CN103776156A (en) | 2014-01-23 | 2014-01-23 | Gas water heater capable of outputting water at constant temperature |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612109A (en) * | 2018-10-22 | 2019-04-12 | 中山市恒乐电器有限公司 | A kind of cold water recovery-type hot-water heating system and cold water recovery method |
| CN111486591A (en) * | 2020-04-24 | 2020-08-04 | 苏红卫 | Intelligent constant temperature system for water outlet and implementation method |
Citations (7)
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|---|---|---|---|---|
| DE4034917A1 (en) * | 1989-11-08 | 1991-05-16 | Vaillant Joh Gmbh & Co | Circulating water heater with copper heat exchanger - is connected by special pipe layout with pump and three way valves to floor-heating system |
| CN2744980Y (en) * | 2004-11-26 | 2005-12-07 | 长春塞维达环保供暖设备有限公司 | Wall hanged waterway circulating device for gas-fired boiler |
| CN200989661Y (en) * | 2006-12-09 | 2007-12-12 | 海尔集团公司 | Condensation constant temperature gas-fired water heater |
| CN201233054Y (en) * | 2008-06-17 | 2009-05-06 | 广东万家乐燃气具有限公司 | Pre-warming and water supply system for multifunction wall hanging furnace |
| CN201662226U (en) * | 2010-04-15 | 2010-12-01 | 广东万家乐燃气具有限公司 | Condensation-type gas-fired heating water heater |
| US20120305105A1 (en) * | 2009-09-28 | 2012-12-06 | Kyungdong Navien Co., Ltd | Hot-water supply heat exchanger provided with a mixing valve, and adaptor having a built-in mixing valve |
| CN203785226U (en) * | 2014-01-23 | 2014-08-20 | 威能(北京)供暖设备有限公司 | Gas water heater capable of yielding constant-temperature water |
-
2014
- 2014-01-23 CN CN201410031978.4A patent/CN103776156A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4034917A1 (en) * | 1989-11-08 | 1991-05-16 | Vaillant Joh Gmbh & Co | Circulating water heater with copper heat exchanger - is connected by special pipe layout with pump and three way valves to floor-heating system |
| CN2744980Y (en) * | 2004-11-26 | 2005-12-07 | 长春塞维达环保供暖设备有限公司 | Wall hanged waterway circulating device for gas-fired boiler |
| CN200989661Y (en) * | 2006-12-09 | 2007-12-12 | 海尔集团公司 | Condensation constant temperature gas-fired water heater |
| CN201233054Y (en) * | 2008-06-17 | 2009-05-06 | 广东万家乐燃气具有限公司 | Pre-warming and water supply system for multifunction wall hanging furnace |
| US20120305105A1 (en) * | 2009-09-28 | 2012-12-06 | Kyungdong Navien Co., Ltd | Hot-water supply heat exchanger provided with a mixing valve, and adaptor having a built-in mixing valve |
| CN201662226U (en) * | 2010-04-15 | 2010-12-01 | 广东万家乐燃气具有限公司 | Condensation-type gas-fired heating water heater |
| CN203785226U (en) * | 2014-01-23 | 2014-08-20 | 威能(北京)供暖设备有限公司 | Gas water heater capable of yielding constant-temperature water |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612109A (en) * | 2018-10-22 | 2019-04-12 | 中山市恒乐电器有限公司 | A kind of cold water recovery-type hot-water heating system and cold water recovery method |
| CN111486591A (en) * | 2020-04-24 | 2020-08-04 | 苏红卫 | Intelligent constant temperature system for water outlet and implementation method |
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Application publication date: 20140507 |