CN106369807A - Zero-cold-water gas water heater and system thereof - Google Patents

Zero-cold-water gas water heater and system thereof Download PDF

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Publication number
CN106369807A
CN106369807A CN201610917603.7A CN201610917603A CN106369807A CN 106369807 A CN106369807 A CN 106369807A CN 201610917603 A CN201610917603 A CN 201610917603A CN 106369807 A CN106369807 A CN 106369807A
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CN
China
Prior art keywords
water
pipe
mouth
cold water
water pipe
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Granted
Application number
CN201610917603.7A
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Chinese (zh)
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CN106369807B (en
Inventor
叶远璋
唐元锋
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Guangdong Vanward New Electric Co Ltd
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Guangdong Vanward New Electric Co Ltd
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Priority to CN201610917603.7A priority Critical patent/CN106369807B/en
Priority to PCT/CN2016/103996 priority patent/WO2018072230A1/en
Publication of CN106369807A publication Critical patent/CN106369807A/en
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Publication of CN106369807B publication Critical patent/CN106369807B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/20Arrangement or mounting of control or safety devices
    • F24H9/2007Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2035Arrangement or mounting of control or safety devices for water heaters using fluid fuel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/124Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using fluid fuel
    • F24H1/125Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using fluid fuel combined with storage tank
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00Control of fluid heaters
    • F24H15/20Control of fluid heaters characterised by control inputs
    • F24H15/212Temperature of the water
    • F24H15/219Temperature of the water after heating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00Control of fluid heaters
    • F24H15/20Control of fluid heaters characterised by control inputs
    • F24H15/238Flow rate
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00Control of fluid heaters
    • F24H15/30Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/335Control of pumps, e.g. on-off control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/12Arrangements for connecting heaters to circulation pipes
    • F24H9/13Arrangements for connecting heaters to circulation pipes for water heaters
    • F24H9/139Continuous flow heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00Control of fluid heaters
    • F24H15/30Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/305Control of valves

Abstract

The invention discloses a zero-cold-water gas water heater which comprises a circulation water pump, a water pump water inlet pipe, a water pump water outlet pipe, a cold water pipe, a cold water inlet nozzle, a hot water outlet nozzle, a heat exchanger, a first one-way valve, a controller, a first water flow sensor and a second water flow sensor. The cold water inlet nozzle, the cold water pipe and the heat exchanger communicate with the hot water outlet nozzle in sequence. The water pump water inlet pipe is connected with the water pump water outlet pipe through the circulation water pump, the water pump water outlet pipe is connected with the cold water pipe, and a first water pipe joint is formed at the connecting position. The first water flow sensor is installed at the position of the water pump water inlet pipe or the water pump water outlet pipe. The second water flow sensor and the first one-way valve are installed at the position of a section, between the first water pipe joint and the cold water inlet nozzle, of the cold water pipe. The circulation water pump, the first water flow sensor and the second water flow sensor are electrically connected with the controller. According to the zero-cold-water gas water heater, water utilization of a user can be correctly judged, good user experience is achieved, electric energy can be saved, and the service life of the water pump can be prolonged.

Description

A kind of zero cold water gas heater and its system
Technical field
The present invention relates to gas utensil technical field, more particularly, to a kind of zero cold water gas heater and its system.
Background technology
This shortcoming of tap water can be flowed out to solve gas heater when using with water spot first, occur in that at present Zero cold water gas heater, including the water circulation heating pipeline being made up of water circulating pump and return pipe etc., water circulation heats pipeline One end and the cold water inlet being connected heat exchanger connect, water circulation heat the other end of pipeline with and the combustion that is connected with water spot The hot water outlet pipe of gas water heater connects.Its operation principle is: when the water temperature in hot water outlet pipe is less than preset temperature, circulation Water pump begins to work, by return pipe by the cold-water reflux in hot water outlet pipe to cold water inlet, and is entered by cold water Water pipe enters into heat exchanger Zhang Jinhang heating, so can realize preheating of the cold water in hot water outlet pipe, so that User heats through in advance in the water being used with water spot.Additionally, existing zero cold water gas heater is also included located at described Water flow sensor in cold water pipe, when user is in normal water utilizing process, has water flowing, at this moment water in described cold water pipe The flow velocity of current can be changed into the signal of telecommunication and the signal of telecommunication is sent to the control being electrically connected with water flow sensing unit by flow transducer Device, then controller can judge to have in cold water pipe water to flow, show that user is using water, at this moment controller can control zero cold water The heating work of gas heater, and the water after heating is delivered to user's water spot, enable a user to just commonly use water.
But it is because that the circulation heating tube of zero current cold water gas heater is connected with cold water inlet, and discharge Sensor is arranged on one section of cold water water inlet between the connectivity part of circulation heating tube and cold water inlet and described heat exchanger Guan Zhong, this can make circulation heating tube and cold water inlet share a water flow sensor, when carrying out cold water and preheating, Water circulation heating pipeline has water to flow, and water flow sensor will produce water-flow signal;When user carries out bath water, cold water Water inlet pipe also has water flowing, and water flow sensor also can produce water-flow signal;Such that controller is difficult to sentence exactly Break and user in the water flowing carrying out bath water or water circulation heating and the cold water pipe that leads to, so that when user needs Water circulation heating may be carried out with zero cold water gas heater during water on the contrary so that user can not just commonly use water (because working as User, can make with water spot and pipeline in zero cold water gas heater during water also when carrying out water circulation heating Hydraulic pressure is not sufficiently stable, simultaneously as the unstable control program that also can make zero cold water gas heater of the hydraulic pressure in pipeline is again Miscellaneous so that sequential operation easily error and lead to the water heater working unstable), and then have impact on the experience of user; And user also can waste electric energy with water water pump if work, also have impact on the working life of water pump simultaneously.
Content of the invention
For the problems referred to above, it is an object of the invention to provide a kind of situation that can correctly judge user's water thus Have good Consumer's Experience and can with saves energy and extend water pump service life zero cold water gas heater and zero Cold water gas heater system.
To achieve these goals, the invention provides a kind of zero cold water gas heater, it includes water circulating pump, water pump Water inlet pipe, pumping line, cold water pipe, cold water water inlet tap, hot water effluent's mouth, heat exchanger, the first check valve, controller, One water flow sensor and the second water flow sensor;Described cold water pipe is connected with described cold water water inlet tap, and described cold water Pipe is connected with the water inlet end of described heat exchanger;The water side of described heat exchanger is connected with described hot water effluent's mouth;Described water The first end of pump water inlet pipe is used for connect with described hot water effluent's mouth, the second end of described pump water inlet and described water circulating pump Water inlet end connect;The first end of described pumping line is connected with the water side of described water circulating pump, and described water pump water outlet Second end of pipe is connected formation the first water pipe node with described cold water pipe;Described first water flow sensor is installed on described water pump At water inlet pipe or at described pumping line, described second water flow sensor and described first check valve are mounted on described the At one section of cold water pipe between one water pipe node and described cold water water inlet tap;The entrance of described first check valve and described cold water enter Water nozzle connects, and the outlet of described first check valve is connected with described first water pipe node;Described water circulating pump, described first current Quantity sensor is all electrically connected with described controller with described second water flow sensor.
Preferably, described zero cold water gas heater also includes the 3rd check valve;Described 3rd check valve is arranged on described At pumping line, and the entrance of described 3rd check valve is connected with the first end of described pumping line, and the described 3rd is unidirectional The outlet of valve is connected with the second end of described pumping line;Or, described 3rd check valve is arranged on described pump water inlet Place, and the entrance of described 3rd check valve connects with the first end of described pump water inlet, the outlet of described 3rd check valve and Second end connection of described pump water inlet.
Preferably, described zero cold water gas heater also includes hot water storage tank, the water inlet end of described hot water storage tank with The water side connection of described heat exchanger, the water side of described hot water storage tank is connected with described hot water effluent's mouth.
Preferably, described zero cold water gas heater also includes the backwater mouth for connecting, institute with described hot water effluent's mouth The first end stating backwater mouth with described pump water inlet is connected.
Present invention also offers the first zero cold water gas heater system, including the first running water pipe, the second tap water Pipe, the mouth of a river from the beginning, the water mixing valve of at least one connection water spot, the 4th check valve, backwater connecting tube, hot water outlet pipe, connection Pipe and zero cold water gas heater as above;Described backwater mouth is by described connecting tube with described cold water water inlet tap even Connect;The hot water mouth of described water mixing valve is connected with described hot water effluent's mouth by described hot water outlet pipe, described hot water effluent's Gutron Cross and the described backwater connecting tube of described 4th check valve is installed is connected with described first running water pipe;Described 4th check valve Entrance is connected with described hot water outlet pipe, and the outlet of described 4th check valve is connected with described first running water pipe;Described mixed water The cold water outlet of valve is connected with one end of described first running water pipe, and the other end of described first running water pipe is with described second from the beginning One end of water pipe connects, and the other end of described second running water pipe is connected with described cold water water inlet tap;Described the mouth of a river from the beginning all with Described first running water pipe and described second running water pipe connect.
Present invention also offers second zero cold water gas heater system, including the first running water pipe, the second tap water Pipe, the mouth of a river from the beginning, the water mixing valve of at least one connection water spot, backwater connecting tube, hot water outlet pipe and as above zero Cold water gas heater;The hot water mouth of described water mixing valve is connected with described hot water effluent's mouth by described hot water outlet pipe, described Hot water outlet pipe is connected with described backwater mouth by described backwater connecting tube;The cold water outlet of described water mixing valve is with described first from the beginning One end of water pipe connects, and the other end of described first running water pipe is connected with described the mouth of a river from the beginning, described second running water pipe One end is connected with described cold water water inlet tap, and the other end of described second running water pipe is connected with described the mouth of a river from the beginning.
Preferably, the first end of described pump water inlet is connected to form the second water pipe node with described cold water pipe, described Second water pipe node is located at one end cold water pipe between described cold water water inlet tap and described first water pipe node, described second water Flow transducer and described first check valve are specifically mounted on positioned at described first water pipe node and described second water pipe section At one section of cold water pipe between point.
Present invention also offers the third zero cold water gas heater system, including the first running water pipe, the second tap water Pipe, the mouth of a river from the beginning, the water mixing valve of at least one connection water spot, the 4th check valve, backwater connecting tube, hot water outlet pipe and such as Upper zero described cold water gas heater;The hot water mouth of described water mixing valve passes through described hot water outlet pipe and described hot water effluent's mouth Connection, described hot water outlet pipe is by being provided with the described backwater connecting tube of described 4th check valve and described first running water pipe Connect;The entrance of described 4th check valve is connected with described hot water outlet pipe, the outlet and described first of described 4th check valve Running water pipe connects;The cold water outlet of described water mixing valve is connected with one end of described first running water pipe, described first running water pipe The other end be connected with one end of described second running water pipe, the other end of described second running water pipe and described cold water water inlet tap Connect;Described the mouth of a river from the beginning is all connected with described first running water pipe and described second running water pipe.
Further, described zero cold water gas heater also include connecting tube, be installed on second single at described connecting tube To valve and for the backwater mouth that connect with described hot water effluent's mouth, described backwater mouth is by described connecting tube with positioned at described the One section of cold water pipe between two water pipe nodes and described cold water water inlet tap is connected;The entrance of described second check valve and described backwater Mouth connects, and the outlet of described second check valve is connected with described cold water water inlet tap.
Present invention also offers the 4th kind of zero cold water gas heater system, including the first running water pipe, the second tap water Pipe, the mouth of a river from the beginning, the water mixing valve of at least one connection water spot, backwater connecting tube, hot water outlet pipe and as above zero Cold water gas heater;The hot water mouth of described water mixing valve is connected with described hot water effluent's mouth by described hot water outlet pipe, described Hot water outlet pipe is connected with described backwater mouth by described backwater connecting tube;The cold water outlet of described water mixing valve is with described first from the beginning One end of water pipe connects, and the other end of described first running water pipe is connected with described the mouth of a river from the beginning, described second running water pipe One end is connected with described cold water water inlet tap, and the other end of described second running water pipe is connected with described the mouth of a river from the beginning.
Described zero cold water gas heater and described zero cold water gas heater system that the present invention provides, by by institute The first end stating pumping line is connected with the water side of described water circulating pump, and by the second end of described pumping line and institute State cold water pipe and connect formation the first water pipe node, and described cold water pipe passes through described heat exchanger with described hot water effluent's mouth even Logical, and described first water flow sensor is installed at described pump water inlet or at described pumping line;So when with In the described pump water inlet connecting with described hot water effluent's mouth, described water circulating pump, described pumping line, described cold water (described water circulating pump work during the water circulation heating pipeline work that pipe, described heat exchanger and described hot water effluent's mouth are constituted Make), described water circulating pump will be sprayed onto in described pumping line from the water that described pump water inlet is come in, and then passes through described cold Water pipe enters into and is circulated heating in described heat exchanger, and this when, described first water flow sensor can produce current Signal, but described second water flow sensor does not produce water-flow signal (because the entrance of described first check valve and institute State the connection of cold water water inlet tap, the outlet of described first check valve is connected with described first water pipe node, and described first check valve It is installed at one section of cold water pipe between described first water pipe node and described cold water water inlet tap, so described water pump water outlet pipe flow The water going out is can not to flow back to the direction of described cold water water inlet tap, is therefore installed on described first water pipe node and described cold water Described second water flow sensor at described cold water pipe between water inlet tap would not produce water-flow signal), at this moment described control Device processed will judge that described zero cold water gas heater is carrying out water circulation heating;And when user needs to use water, at this moment no Whether work by described water circulating pump, described cold water water inlet tap has water and flows to and reach described heat exchange through described cold water pipe Device carries out heating and flows out from described hot water effluent's mouth after the heating, so that described cold water pipe has water to flow, at this moment described Second water flow sensor will produce water-flow signal, and according to this water-flow signal, described controller judges that user uses Water, then described controller allow described water circulating pump to quit work, and described controller according to described first discharge sensing The water-flow signal of device and described second water flow sensor calculates the total water current amount of described zero cold water gas heater, Ran Housuo State controller and the heating work of described zero cold water gas heater is controlled so that user can be just conventional according to described total water current amount Water, overcomes because single current quantity sensor control program is complicated so that sequential operation easily malfunctions is led to zero cold water combustion gas heat The problem of hydrophone job insecurity, the therefore present invention have good Consumer's Experience;And because by described second discharge Sensor judges that user, can be to follow described in saves energy and prolongation with just allowing described water circulating pump quit work during water The service life of ring water pump.
Brief description
In order to be illustrated more clearly that technical scheme, below by the accompanying drawing work to use required in embodiment Simply introduce it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of zero cold water gas heater provided in an embodiment of the present invention;
Fig. 2 is the structural representation of another kind of zero cold water gas heater provided in an embodiment of the present invention;
Fig. 3 is the structural representation of another kind of zero cold water gas heater provided in an embodiment of the present invention;
Fig. 4 is a kind of structural representation of zero cold water gas heater system provided in an embodiment of the present invention;
Fig. 5 is another structural representation of zero cold water gas heater system shown in Fig. 4;
Fig. 6 is the structural representation of another zero cold water gas heater system provided in an embodiment of the present invention;
Fig. 7 is the structural representation of another zero cold water gas heater system provided in an embodiment of the present invention;
Fig. 8 is the structural representation of another zero cold water gas heater system provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work Embodiment, broadly falls into the scope of protection of the invention.
Refer to Fig. 1, Fig. 2 and Fig. 3, one aspect of the present invention provides a kind of zero cold water gas heater, including recirculated water Pump 1, pump water inlet 2, pumping line 3, cold water pipe 4, cold water water inlet tap 5, hot water effluent's mouth 6, heat exchanger 7, first are single To valve 8, controller 9, the first water flow sensor 10 and the second water flow sensor 11;Described cold water pipe 4 and described cold water Water inlet tap 5 connects, and described cold water pipe 4 is connected with the water inlet end of described heat exchanger 7;The water side of described heat exchanger 7 with Described hot water effluent's mouth 6 connects;The first end of described pump water inlet 2 is used for connecting with described hot water effluent's mouth 6, described water pump Second end of water inlet pipe 2 is connected with the water inlet end of described water circulating pump 1;The first end of described pumping line 3 and described circulation The water side of water pump 1 connects, and the second end of described pumping line 3 is connected formation the first water pipe node with described cold water pipe 4; Described first water flow sensor 10 is installed at described pump water inlet 2 or at described pumping line 3, described second current Quantity sensor 11 and described first check valve 8 are mounted between described first water pipe node and described cold water water inlet tap 5 one At section cold water pipe 4;The entrance of described first check valve 8 is connected with described cold water water inlet tap, the outlet of described first check valve 8 with Described first water pipe node connection;Described water circulating pump 1, described first water flow sensor 10 and described second discharge sensing Device 11 is all electrically connected with described controller 9.
Preferably, refer to Fig. 1, described zero cold water gas heater also includes the 3rd check valve 30, and the described 3rd is unidirectional Valve 30 is installed at described pumping line 3;Described 3rd check valve 30 is arranged at described pumping line 3, and described The entrance of three check valves 30 is connected with the first end of described pumping line 3, the outlet of described 3rd check valve 30 and described water Second end connection of water pump outlet pipe 3;Or, described 3rd check valve 30 is arranged at described pump water inlet 2, and the described 3rd The entrance of check valve 30 is connected with the first end of described pump water inlet 2, the outlet of described 3rd check valve 30 and described water pump Second end connection of water inlet pipe 2.So can prevent water from flowing to described water from described cold water pipe 4 by described pump water inlet 2 Pump water inlet pipe 2, thus it is described to allow current more intensively to flow to by the described cold water pipe 4 being connected with described cold water water inlet tap 5 Heat exchanger 7.
Preferably, Fig. 1, Fig. 2 and Fig. 3 are referred to, described zero cold water gas heater also includes hot water storage tank 31, described The water inlet end of hot water storage tank 31 is connected with the water side of described heat exchanger 7, the water side of described hot water storage tank 31 and institute State hot water effluent's mouth 6 to connect.So from described heat exchanger 7 hot water out be temporarily stored in described hot water storage tank 31 Hot water mixed, reduce the range of temperature of described hot water effluent's mouth 6 hot water out, thus avoiding described heat Water faucet 6 water out is sometimes hot and sometimes cold, and then improves the experience of user.It should be noted that described hot water water storage Can be connected logical between case 31 and described heat exchanger 7 by one or more pipelines, described hot water storage tank 31 with described One can be passed through between hot water effluent's mouth 6 or how with pipeline communication, here is not specifically limited.
In embodiments of the present invention, by by the water side of the first end of described pumping line 3 and described water circulating pump 1 Connect, and the second end of described pumping line 3 is connected formation the first water pipe node with described cold water pipe 4, and described cold water Pipe 4 is connected with described hot water effluent's mouth 6 by described heat exchanger 7, and described first water flow sensor 10 is installed on institute State at pump water inlet 2 or at described pumping line 3;So when the described water pump for connecting with described hot water effluent's mouth 6 Water inlet pipe 2, described water circulating pump 1, described pumping line 3, described cold water pipe 4, described heat exchanger 7 and described hot water go out During the water circulation heating pipeline work that water nozzle 6 is constituted (described water circulating pump 1 works), described water circulating pump 1 will be from described water The water that pump water inlet pipe 2 is come in is sprayed onto in described pumping line 3, then enters into described heat exchanger 7 by described cold water pipe 4 In be circulated heating, this when, described first water flow sensor 10 can produce water-flow signal, but described second current Quantity sensor 11 does not have generation water-flow signal, and (entrance because of described first check valve 8 is connected with described cold water water inlet tap, institute The outlet stating the first check valve is connected with described first water pipe node, and described first check valve 8 is installed on described first water pipe At one section of cold water pipe 4 between node and described cold water water inlet tap 5, so the water that described pumping line 3 flows out is can not be to The direction backflow of described cold water water inlet tap 5, therefore it is installed between described first water pipe node and described cold water water inlet tap 5 Described second water flow sensor 11 at described cold water pipe 4 would not produce water-flow signal), at this moment described controller 9 will Judge that described zero cold water gas heater is carrying out water circulation heating;And when user needs to use water, at this moment no matter described follow Whether ring water pump 1 works, and described cold water water inlet tap 5 has water and flows to and reach described heat exchanger 7 through described cold water pipe 4 Row heating is simultaneously flowed out from described hot water effluent's mouth 6 after the heating, so that described cold water pipe 4 has a water flowing, at this moment described the Two water flow sensors will produce water-flow signal, and according to this water-flow signal, described controller 9 judges that user uses Water, then described controller 9 allow described water circulating pump 1 to quit work, and described controller 9 according to described first discharge pass The water-flow signal of sensor 10 and described second water flow sensor 11 calculates the total water current amount of described zero cold water gas heater, Then described controller 9 controls the heating work of described zero cold water gas heater so that user can according to described total water current amount Just to commonly use water, overcome because single current quantity sensor control program is complicated so that sequential operation easily malfunction led to zero cold The unstable problem of water gas water heater working, the therefore present invention have good Consumer's Experience;And because by described the Two water flow sensors 11 judge user with just allowing described water circulating pump 1 quit work during water, can with saves energy with And extend the service life of described water circulating pump 1.
For the ease of the understanding of the present invention, here, providing some preferred embodiments of the present invention:
The first preferred embodiment:
Refer to Fig. 1, described zero cold water gas heater also includes the backwater mouth for connecting with described hot water effluent's mouth 6 13, described backwater mouth 13 is connected with the first end of described pump water inlet 2.
In the preferred embodiment, by the described backwater mouth 13 that will be used for connecting with described hot water effluent's mouth 6 with described The first end of pump water inlet 2 connects, so described backwater mouth 13, described pump water inlet 2, described water circulating pump 1, described water Water pump outlet pipe 3, described cold water pipe 4, described heat exchanger 7 and described hot water effluent's mouth 6 may be constructed water circulation heating pipeline, Described zero cold water gas heater is made to have the function of water circulation heating.
Second preferred embodiment:
Refer to Fig. 2, the first end of described pump water inlet 2 is connected to form the second water pipe node with described cold water pipe 4, Described second water pipe node is located at one section of cold water pipe 4 between described cold water water inlet tap 5 and described first water pipe node, described Second water flow sensor 11 and described first check valve 8 are specifically mounted on positioned at described first water pipe node and described the At one section of cold water pipe 4 between two water pipe nodes.
In the preferred embodiment, formed by being connected the first end of described pump water inlet 2 with described cold water pipe 4 Second water pipe node, so when the described pump water inlet 2 being connected with described cold water pipe 4 is by being connected with described cold water pipe 4 Described cold water water inlet tap 5 when connecting with described hot water effluent's mouth 6, described cold water water inlet tap 5, described pump water inlet 2, institute State water circulating pump 1, described pumping line 3, described cold water pipe 4, described heat exchanger 7 and described hot water effluent's mouth 6 permissible Constitute water circulation and heat pipeline so that described zero cold water gas heater has the function of water circulation heating.
The third preferred embodiment is provided on the basis of second preferred embodiment:
Refer to Fig. 3, described zero cold water gas heater also include connecting tube 14, be installed at described connecting tube 14 Two check valves 15 and the backwater mouth 13 for connecting with described hot water effluent's mouth 6, described backwater mouth 13 is by described connecting tube 14 and be located at one section of cold water pipe 4 between described second water pipe node and described cold water water inlet tap 5 and be connected;Described second check valve 15 entrance is connected with described backwater mouth 13, and the outlet of described second check valve 15 is connected with described cold water water inlet tap 5.
In the preferred embodiment, formed by being connected the first end of described pump water inlet 2 with described cold water pipe 4 Second water pipe node, and described backwater mouth 13 entered with described cold water with positioned at described second water pipe node by described connecting tube 14 One section of cold water pipe 4 between water nozzle 5 connects;So when the described pump water inlet 2 being connected with described cold water pipe 4 be by with institute The described cold water water inlet tap 5 stating cold water pipe 4 connection is when connecting with described hot water effluent's mouth 6, described cold water water inlet tap 5, described Pump water inlet 2, described water circulating pump 1, described pumping line 3, described cold water pipe 4, described heat exchanger 7 and described heat Water faucet 6 may be constructed water circulation heating pipeline;Or be when described pump water inlet 2 be by described backwater mouth 13 When connecting with described hot water effluent's mouth 6, described backwater mouth 13, described connecting tube 14, described pump water inlet 2, described recirculated water Pump 1, described pumping line 3, described cold water pipe 4, described heat exchanger 7 and described hot water effluent's mouth 6 may be constructed water and follow Ring heats pipeline;Therefore by this preferred embodiment make described zero cold water gas heater have water circulation heating function simultaneously User can be allowed to carry out, according to practical situation, the design that water circulation heats pipeline, improve the experience of user.
Another aspect of the present invention provides a kind of zero cold water gas heater system, refers to Fig. 4, including the first tap water Pipe 20, the second running water pipe 21, the mouth of a river from the beginning 22, the water mixing valve 23 of at least one connection water spot, the 4th check valve 24, backwater Connecting tube 25, hot water outlet pipe 26, connecting tube 14 and zero cold water gas heater as described in the first preferred embodiment;Institute State backwater mouth 13 to be connected with described cold water water inlet tap 5 by described connecting tube 14;The hot water mouth of described water mixing valve 23 passes through described Hot water outlet pipe is connected with described hot water effluent's mouth 6, and described hot water outlet pipe is by being provided with the institute of described 4th check valve 24 State backwater connecting tube 25 to be connected with described first running water pipe 20;The entrance of described 4th check valve 24 and described hot water outlet pipe 26 connections, the outlet of described 4th check valve 24 is connected with described first running water pipe 20;The cold water outlet of described water mixing valve 23 with One end connection of described first running water pipe 20, the other end of described first running water pipe 20 and described second running water pipe 21 One end connects, and the other end of described second running water pipe 21 is connected with described cold water water inlet tap 5;Described the mouth of a river from the beginning 22 is all and institute State the first running water pipe 20 and described second running water pipe 21 connects.
In embodiments of the present invention, the described hot water outlet pipe 26 connecting with described hot water effluent's mouth 6 passes through to install The described backwater connecting tube 25 stating the 4th check valve 24 is connected with described first running water pipe 20, and described first running water pipe 20 It is connected with described cold water water inlet tap 5 by described second running water pipe 21, so described hot water outlet pipe 26, described backwater connect Pipe 25, described first running water pipe 20, described second running water pipe 21, described cold water water inlet tap 5, described connecting tube 14, backwater Mouth 13, described pump water inlet 2, described water circulating pump 1, described pumping line 3, described cold water pipe 4, described heat exchanger 7 And described hot water effluent's mouth 6 may be constructed water circulation heating pipeline so that described zero cold water gas heater system has water Hydronic function, that is, when temperature sensing that is being arranged in described hot water outlet pipe 26 and electrically connecting with described controller 9 When the water temperature that device detects in described hot water outlet pipe 26 is less than default requirement, described controller 9 will control described circulation The startup of water pump 1 is so that the water in described hot water outlet pipe 26 constantly passes through backwater connecting tube 25, described first running water pipe 20th, described second running water pipe 21, described cold water water inlet tap 5, described connecting tube 14, backwater mouth 13, described pump water inlet 2, Described water circulating pump 1, described pumping line 3, described cold water pipe 4 enter into described heat exchanger 7 and are heated, and in heating Flow out from described hot water effluent's mouth 6 afterwards, thus realizing the circulating-heating of the water in hot water outlet pipe 26.And work as user and need to use water When, at this moment no matter whether described water circulating pump 1 works, and described cold water water inlet tap 5 has water and flows to and arrive through described cold water pipe 4 Reach described heat exchanger 7 to be heated and flow out from described hot water effluent's mouth 6 after the heating, so that described cold water pipe 4 has Water flows, and at this moment described second water flow sensor will produce water-flow signal, and described controller 9 is according to this water-flow signal Judge that user is using water, then described controller 9 allows described water circulating pump 1 to quit work, and described controller 9 basis Described first water flow sensor 10 calculates described zero cold water combustion gas with the water-flow signal of described second water flow sensor 11 The total water current amount of water heater, then described controller 9 adding according to the described total water current amount described zero cold water gas heater of control Thermal technology makees so that user just can commonly use water, overcomes because single current quantity sensor control program is complicated and makes sequential operation Easily error is led to the unstable problem of zero cold water gas water heater working, and the therefore present invention has good Consumer's Experience; And because judge user with just allowing described water circulating pump 1 stop work during water by described second water flow sensor 11 Make, can be with saves energy and the service life extending described water circulating pump 1.
Described connection it should be noted that referring to Fig. 5, in the described zero cold water gas heater system of the present embodiment Pipe can remove, and at this moment, described second running water pipe 21 directly can be connected (i.e. described second tap water with described backwater mouth 13 Pipe 21 is no longer connected with described cold water water inlet tap 5);So described hot water outlet pipe 26, described backwater connecting tube 25, described first Running water pipe 20, described second running water pipe 21, described backwater mouth 13, described pump water inlet 2, described water circulating pump 1, described Pumping line 3, described cold water pipe 4, described heat exchanger 7 and described hot water effluent's mouth 6 may be constructed water circulation heating tube Road so that described zero cold water gas heater system has the function of water circulation heating, that is, when being arranged on described hot water outlet pipe The water temperature that temperature sensor that is in 26 and being electrically connected with described controller 9 is detected in described hot water outlet pipe 26 is less than default Requirement when, described controller 9 will control described water circulating pump 1 start so that the water in described hot water outlet pipe 26 not Open close backwater connecting tube 25, described first running water pipe 20, described second running water pipe 21, described backwater mouth 13, described water excessively Pump water inlet pipe 2, described water circulating pump 1, described pumping line 3, described cold water pipe 4 enter into described heat exchanger 7 to carry out adding Heat, and flow out from described hot water effluent's mouth 6 after the heating, thus realizing the circulating-heating of the water in described hot water outlet pipe 26. After the water in described hot water outlet pipe 26 realizes circulating-heating, when user is when opening described water mixing valve 23 with water spot, use water Point can flow out the water through heating first, and at this moment the tap water in described the mouth of a river from the beginning 22 also can by described second from the beginning Water pipe 21, described backwater mouth 13, described pump water inlet 2, described water circulating pump 1, described pumping line 3, described cold water pipe 4 Enter into described heat exchanger 7 to be heated, and be flowed into described hot water outlet pipe 26 from described hot water effluent's mouth 6 after the heating In, then again by being connected with water spot outflow with described hot water outlet pipe 26, thus realizing the continuous supply of hot water.Therefore originally Embodiment can realize the function of gas heater zero cold water, overcomes because the water in described hot water outlet pipe 26 can not be in advance Heat and lead to flow out, during user uses, the shortcoming that temperature does not reach the tap water of bathing requirement first, thus improving The bathing experience of user.
Another aspect of the present invention provides a kind of zero cold water gas heater system again, refers to Fig. 6, including first from the beginning Water pipe 20, the second running water pipe 21, the mouth of a river from the beginning 22, the water mixing valve 23 of at least one connection water spot, backwater connecting tube 25, heat Water outlet pipe and zero cold water gas heater as described in the first preferred embodiment;The hot water mouth of described water mixing valve 23 passes through Described hot water outlet pipe is connected with described hot water effluent's mouth 6, described hot water outlet pipe by described backwater connecting tube 25 with described Backwater mouth 13 connects;The cold water outlet of described water mixing valve 23 is connected with one end of described first running water pipe 20, and described first from the beginning The other end of water pipe 20 is connected with described the mouth of a river from the beginning 22, one end of described second running water pipe 21 and described cold water water inlet tap 5 Connect, the other end of described second running water pipe 21 is connected with described the mouth of a river from the beginning 22.
In embodiments of the present invention, the described hot water outlet pipe connecting with described hot water effluent's mouth 6 passes through described backwater even Adapter 25 is connected with described backwater mouth 13, so described hot water outlet pipe, described backwater connecting tube 25, described backwater mouth 13, institute State pump water inlet 2, described water circulating pump 1, described pumping line 3, described cold water pipe 4, described heat exchanger 7 and described Hot water effluent's mouth 6 may be constructed water circulation heating pipeline so that described zero cold water gas heater system has water circulation heating Function, that is, when temperature sensor that is being arranged in described hot water outlet pipe 26 and being electrically connected with described controller 9 is detected When water temperature in described hot water outlet pipe 26 is less than default requirement, described controller 9 will control opening of described water circulating pump 1 Move so that the water in described hot water outlet pipe 26 constantly passes through backwater connecting tube 25, backwater mouth 13, described pump water inlet 2, institute State water circulating pump 1, described pumping line 3, described cold water pipe 4 enter into described heat exchanger 7 and heated, and after the heating Flow out from described hot water effluent's mouth 6, thus realizing the circulating-heating of the water in hot water outlet pipe 26.And work as user and need to use water When, at this moment no matter whether described water circulating pump 1 works, and described cold water water inlet tap 5 has water and flows to and arrive through described cold water pipe 4 Reach described heat exchanger 7 to be heated and flow out from described hot water effluent's mouth 6 after the heating, so that described cold water pipe 4 has Water flows, and at this moment described second water flow sensor will produce water-flow signal, and described controller 9 is according to this water-flow signal Judge that user is using water, then described controller 9 allows described water circulating pump 1 to quit work, and described controller 9 basis Described first water flow sensor 10 calculates described zero cold water combustion gas with the water-flow signal of described second water flow sensor 11 The total water current amount of water heater, then described controller 9 adding according to the described total water current amount described zero cold water gas heater of control Thermal technology makees so that user just can commonly use water, overcomes because single current quantity sensor control program is complicated and makes sequential operation Easily error is led to the unstable problem of zero cold water gas water heater working, and the therefore present invention has good Consumer's Experience; And because judge user with just allowing described water circulating pump 1 stop work during water by described second water flow sensor 11 Make, can be with saves energy and the service life extending described water circulating pump 1.
Another aspect of the present invention provides a kind of zero cold water gas heater system again, refers to Fig. 7, including first from the beginning Water pipe 20, the second running water pipe 21, the mouth of a river from the beginning 22, the water mixing valve 23 of at least one connection water spot, the 4th check valve 24, return Water connecting tube 25, hot water outlet pipe and zero cold water gas heater as described in second preferred embodiment;Described water mixing valve 23 hot water mouth is connected with described hot water effluent's mouth 6 by described hot water outlet pipe, and described hot water outlet pipe passes through to install The described backwater connecting tube 25 stating the 4th check valve 24 is connected with described first running water pipe 20;The entering of described 4th check valve 24 Mouth is connected with described hot water outlet pipe 26, and the outlet of described 4th check valve 24 is connected with described first running water pipe 20;Described The cold water outlet of water mixing valve 23 is connected with one end of described first running water pipe 20, the other end of described first running water pipe 20 and institute The one end stating the second running water pipe 21 connects, and the other end of described second running water pipe 21 is connected with described cold water water inlet tap 5;Institute State the mouth of a river from the beginning 22 to be all connected with described first running water pipe 20 and described second running water pipe 21.
In embodiments of the present invention, the described hot water outlet pipe connecting with described hot water effluent's mouth 6 is described by being provided with The described backwater connecting tube 25 of the 4th check valve 24 is connected with described first running water pipe 20, with described first running water pipe 20 even The other end of described second running water pipe 21 connecing is connected with described cold water water inlet tap 5;So when described pump water inlet 2 is logical When crossing the described cold water water inlet tap 5 being connected with described cold water pipe 4 and connecting with described hot water effluent's mouth 6, described hot water outlet pipe, Described backwater connecting tube 25, described first running water pipe 20, described second running water pipe 21, described cold water water inlet tap 5, described water Pump water inlet pipe 2, described water circulating pump 1, described pumping line 3, described cold water pipe 4, described heat exchanger 7 and described hot water Faucet 6 may be constructed water circulation and heats pipeline so that described zero cold water gas heater system has the work(of water circulation heating Can, detect when temperature sensor that is being arranged in described hot water outlet pipe 26 and electrically connect with described controller 9 described in When water temperature in hot water outlet pipe 26 is less than default requirement, described controller 9 will control the startup of described water circulating pump 1, Make water in described hot water outlet pipe 26 constantly pass through backwater connecting tube 25, described first running water pipe 20, described second from Carry out water pipe 21, described cold water water inlet tap 5, described pump water inlet 2, described water circulating pump 1, described pumping line 3, described cold Water pipe 4 enters into described heat exchanger 7 and is heated, and flows out from described hot water effluent's mouth 6 after the heating, thus realizing hot water The circulating-heating of the water in outlet pipe 26.And when user needs to use water, at this moment no matter whether described water circulating pump 1 works, institute State cold water water inlet tap 5 have water flow to and through described cold water pipe 4 reach described heat exchanger 7 carry out heating and after the heating from Described hot water effluent's mouth 6 flows out, so that described cold water pipe 4 has water to flow, at this moment described second water flow sensor will Produce water-flow signal, and according to this water-flow signal, described controller 9 judges that user is using water, then described controller 9 Allow described water circulating pump 1 to quit work, and described controller 9 is according to described first water flow sensor 10 and described second water The water-flow signal of flow transducer 11 calculates the total water current amount of described zero cold water gas heater, then described controller 9 Control the heating work of described zero cold water gas heater so that user just can commonly use water according to described total water current amount, overcome Sequential operation is easily malfunctioned and is led to zero cold water gas water heater working because single current quantity sensor control program is complicated Unstable problem, the therefore present invention have good Consumer's Experience;And because by described second water flow sensor 11 Judge user with just allowing described water circulating pump 1 quit work during water, with saves energy and described recirculated water can be extended The service life of pump 1.
Another aspect of the present invention additionally provides a kind of zero cold water gas heater system, refers to Fig. 8, including first from the beginning Water pipe 20, the second running water pipe 21, the mouth of a river from the beginning 22, the water mixing valve 23 of at least one connection water spot, backwater connecting tube 25, heat Water outlet pipe and zero cold water gas heater as described in the third preferred embodiment;The hot water mouth of described water mixing valve 23 passes through Described hot water outlet pipe is connected with described hot water effluent's mouth 6, described hot water outlet pipe by described backwater connecting tube 25 with described Backwater mouth 13 connects;The cold water outlet of described water mixing valve 23 is connected with one end of described first running water pipe 20, and described first from the beginning The other end of water pipe 20 is connected with described the mouth of a river from the beginning 22, one end of described second running water pipe 21 and described cold water water inlet tap 5 Connect, the other end of described second running water pipe 21 is connected with described the mouth of a river from the beginning 22.
In embodiments of the present invention, the described hot water outlet pipe connecting with described hot water effluent's mouth 6 passes through described backwater even Adapter 25 is connected with described backwater mouth 13, so described hot water outlet pipe, described backwater connecting tube 25, described backwater mouth 13, institute State connecting tube 14, described pump water inlet 2, described water circulating pump 1, described pumping line 3, described cold water pipe 4, described heat friendship Parallel operation 7 and described hot water effluent's mouth 6 may be constructed water circulation and heat pipeline so that described zero cold water gas heater system has There is the function of water circulation heating, that is, when temperature that is being arranged in described hot water outlet pipe 26 and electrically connecting with described controller 9 When the water temperature that sensor detects in described hot water outlet pipe 26 is less than default requirement, described controller 9 will control described The startup of water circulating pump is so that the water in described hot water outlet pipe 26 constantly passes through backwater connecting tube 25, backwater mouth 13, described company Adapter 14, described pump water inlet 2, described water circulating pump 1, described pumping line 3, described cold water pipe 4 enter into described heat Exchanger 7 is heated, and flows out from described hot water effluent's mouth 6 after the heating, thus realizing the water in hot water outlet pipe 26 Circulating-heating.And when user needs to use water, at this moment no matter whether described water circulating pump 1 works, described cold water water inlet tap 5 has Water flows to and reaches described heat exchanger 7 through described cold water pipe 4 and heated and flow from described hot water effluent's mouth 6 after the heating Go out, so that described cold water pipe 4 has water to flow, at this moment described second water flow sensor will produce water-flow signal, and According to this water-flow signal, described controller 9 judges that user is using water, then described controller 9 allows described water circulating pump 1 to stop Only work, and described controller 9 is according to the water of described first water flow sensor 10 and described second water flow sensor 11 Stream signal of change goes out the total water current amount of described zero cold water gas heater, and then described controller 9 is according to described total water current amount control Make the heating work of described zero cold water gas heater so that user just can commonly use water, overcome because single current quantity sensor Control program is complicated and sequential operation is easily malfunctioned the problem being led to zero cold water gas water heater working unstable, therefore The present invention has good Consumer's Experience;And because judge that user is using water by described second water flow sensor 11 When just allow described water circulating pump 1 quit work, can with saves energy and extend described water circulating pump 1 service life.
In embodiments of the present invention, it should be noted that described first check valve 8, the second check valve 15, the 3rd check valve 30 and the 4th check valve 24 can be all one or multiple, here is not specifically limited.Described pumping line 3 is permissible It is connected with described cold water pipe 4 by three way cock, described pumping line 3 can also be the company of being integrally formed with described cold water pipe 4 Connect, here is also not specifically limited.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any Those skilled in the art in technical scope disclosed by the invention, the change or replacement that can readily occur in, all answer It is included within the scope of the present invention.Therefore, protection scope of the present invention with described scope of the claims should be Accurate.

Claims (10)

1. a kind of zero cold water gas heater, including water circulating pump, pump water inlet, pumping line, cold water pipe, cold water water inlet Mouth, hot water effluent's mouth, heat exchanger and controller are it is characterised in that also include the first water flow sensor and the second water Flow transducer;
Described cold water pipe is connected with described cold water water inlet tap, and described cold water pipe is connected with the water inlet end of described heat exchanger;Institute The water side stating heat exchanger is connected with described hot water effluent's mouth;
The first end of described pump water inlet is used for connecting with described hot water effluent's mouth, the second end of described pump water inlet and institute The water inlet end stating water circulating pump connects;
The first end of described pumping line is connected with the water side of described water circulating pump, and the second end of described pumping line It is connected formation the first water pipe node with described cold water pipe;Described first water flow sensor be installed at described pump water inlet or At described pumping line, described second water flow sensor and described first check valve are mounted on described first water pipe node At one section of cold water pipe and described cold water water inlet tap between;The entrance of described first check valve is connected with described cold water water inlet tap, The outlet of described first check valve is connected with described first water pipe node;
Described water circulating pump, described first water flow sensor and described second water flow sensor are all electrically connected with described controller Connect.
2. zero cold water gas heater according to claim 1 it is characterised in that also include for described hot water effluent The backwater mouth of mouth connection, described backwater mouth is connected with the first end of described pump water inlet.
3. zero cold water gas heater according to claim 1 it is characterised in that the first end of described pump water inlet with Described cold water pipe connects to form the second water pipe node, and described second water pipe node is located at described cold water water inlet tap and described first At one section of cold water pipe between water pipe node;Described second water flow sensor is specifically mounted on described first check valve At one section of cold water pipe between described first water pipe node and described second water pipe node.
4. zero cold water gas heater according to claim 3 is described in it is characterised in that also including connecting tube, being installed on The second check valve at connecting tube and the backwater mouth for connecting with described hot water effluent's mouth, described backwater mouth passes through described company Adapter and one section of cold water pipe being located between described second water pipe node and described cold water water inlet tap are connected;Described second check valve Entrance connect with described backwater mouth, the outlet of described second check valve is connected with described cold water water inlet tap.
5. zero cold water gas heater according to claim 1 is it is characterised in that also include the 3rd check valve;Described Three check valves are arranged at described pumping line, and the first end of the entrance of described 3rd check valve and described pumping line Connection, the outlet of described 3rd check valve is connected with the second end of described pumping line;Or,
Described 3rd check valve is arranged at described pump water inlet, and the entrance of described 3rd check valve and described water feeding of water pump The first end connection of pipe, the outlet of described 3rd check valve is connected with the second end of described pump water inlet.
6. the gas heater according to any one of Claims 1 to 5 is it is characterised in that also including hot water storage tank, described The water inlet end of hot water storage tank is connected with the water side of described heat exchanger, the water side of described hot water storage tank and described hot water Faucet connects.
7. a kind of zero cold water gas heater system is it is characterised in that include the first running water pipe, the second running water pipe, from the beginning The mouth of a river, the water mixing valve of at least one connection water spot, the 4th check valve, backwater connecting tube, hot water outlet pipe, connecting tube and such as Zero cold water gas heater described in claim 2;Described backwater mouth is connected with described cold water water inlet tap by described connecting tube;
The hot water mouth of described water mixing valve is connected with described hot water effluent's mouth by described hot water outlet pipe, described hot water effluent's Gutron Cross and the described backwater connecting tube of described 4th check valve is installed is connected with described first running water pipe;Described 4th check valve Entrance is connected with described hot water outlet pipe, and the outlet of described 4th check valve is connected with described first running water pipe;
The cold water outlet of described water mixing valve is connected with one end of described first running water pipe, the other end of described first running water pipe with One end of described second running water pipe connects, and the other end of described second running water pipe is connected with described cold water water inlet tap;Described The mouth of a river from the beginning is all connected with described first running water pipe and described second running water pipe.
8. a kind of zero cold water gas heater system is it is characterised in that include the first running water pipe, the second running water pipe, from the beginning The mouth of a river, the water mixing valve of at least one connection water spot, backwater connecting tube, hot water outlet pipe and as claimed in claim 2 zero Cold water gas heater;
The hot water mouth of described water mixing valve is connected with described hot water effluent's mouth by described hot water outlet pipe, described hot water effluent's Gutron Cross described backwater connecting tube to be connected with described backwater mouth;
The cold water outlet of described water mixing valve is connected with one end of described first running water pipe, the other end of described first running water pipe with Described the mouth of a river from the beginning connection, one end of described second running water pipe is connected with described cold water water inlet tap, described second running water pipe The other end connect with described the mouth of a river from the beginning.
9. a kind of zero cold water gas heater system is it is characterised in that include the first running water pipe, the second running water pipe, from the beginning The mouth of a river, the water mixing valve of at least one connection water spot, the 4th check valve, backwater connecting tube, hot water outlet pipe and such as right will Seek zero cold water gas heater described in 3;
The hot water mouth of described water mixing valve is connected with described hot water effluent's mouth by described hot water outlet pipe, described hot water effluent's Gutron Cross and the described backwater connecting tube of described 4th check valve is installed is connected with described first running water pipe;Described 4th check valve Entrance is connected with described hot water outlet pipe, and the outlet of described 4th check valve is connected with described first running water pipe;
The cold water outlet of described water mixing valve is connected with one end of described first running water pipe, the other end of described first running water pipe with One end of described second running water pipe connects, and the other end of described second running water pipe is connected with described cold water water inlet tap;Described The mouth of a river from the beginning is all connected with described first running water pipe and described second running water pipe.
10. a kind of zero cold water gas heater system is it is characterised in that include the first running water pipe, the second running water pipe, from the beginning The mouth of a river, the water mixing valve of at least one connection water spot, backwater connecting tube, hot water outlet pipe and as claimed in claim 4 zero Cold water gas heater;
The hot water mouth of described water mixing valve is connected with described hot water effluent's mouth by described hot water outlet pipe, described hot water effluent's Gutron Cross described backwater connecting tube to be connected with described backwater mouth;
The cold water outlet of described water mixing valve is connected with one end of described first running water pipe, the other end of described first running water pipe with Described the mouth of a river from the beginning connection, one end of described second running water pipe is connected with described cold water water inlet tap, described second running water pipe The other end connect with described the mouth of a river from the beginning.
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