CN112283948A - Gas heating water heater with zero cold water function - Google Patents
Gas heating water heater with zero cold water function Download PDFInfo
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- CN112283948A CN112283948A CN202011309865.8A CN202011309865A CN112283948A CN 112283948 A CN112283948 A CN 112283948A CN 202011309865 A CN202011309865 A CN 202011309865A CN 112283948 A CN112283948 A CN 112283948A
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- hot water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/60—Devices for simultaneous control of gas and combustion air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/12—Arrangements for connecting heaters to circulation pipes
- F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
Abstract
The invention relates to a gas heating water heater, in particular to a gas heating water heater with a zero cold water function, wherein a domestic hot water-preheating circulating system comprises a first heating pipe section, a domestic hot water pipeline, a domestic cold water pipeline and a control system, a one-way three-way valve is arranged on the domestic cold water pipeline, and a water return pipeline is communicated between a first pipe orifice and a one-way port of the one-way three-way valve; the control system is respectively in communication connection with the cold water temperature controller, the first circulating water pump, the hot water temperature controller and the first electronic pressure sensor. According to the domestic hot water preheating circulating system with the zero cold water function, the domestic hot water preheating circulating system is independent of a heating water system of a gas heating water heater, so that the influence on the function of the heating system when the zero cold water function in domestic water is used is reduced; the two do not interfere with each other, guarantee that hot water supply and heating function can both normally operate simultaneously, brought a great deal of facility for user's daily use.
Description
Technical Field
The invention relates to a gas heating water heater, in particular to a gas heating water heater with a cold water-free function.
Background
The gas heating water heater has a powerful family central heating function, can meet the heating requirements of multiple rooms, can set comfortable temperature at will in each room according to the requirements, can also decide to independently close heating in a certain room according to the requirements, and can provide large-flow constant-temperature sanitary domestic hot water for use in places such as family bathing and kitchens.
At present, only the quick gas water heater in the market has a zero cold water function (namely, when any hot water faucet is opened, hot water flows out instantly, and hot water does not need to wait for), but the gas heating water heater does not have the function.
The zero-cold-water function of the rapid gas water heater is to send the cooled water in a hot water pipeline system to a heating device (a gas heating and heat exchange system) in the water heater again to be heated to a set temperature through a circulating pump arranged in the pipeline; however, in the current working principle of the existing gas heating water heater, the domestic hot water mode and the heating mode of the existing gas heating water heater are in interactive work (namely, when a machine works for heating, the domestic hot water stops working, when the domestic hot water is used, the machine heating function stops working, the hot water of a domestic hot water system and the hot water of a heating system are heated and heat exchanged to share one set of device), and the domestic hot water mode and the heating mode cannot work simultaneously; if cooled water in a hot water pipeline system is sent into a heating device (a gas heating and heat exchange system) in the wall-mounted boiler again through a pipeline circulating pump to be heated, the heating work of the gas wall-mounted boiler with the current structure and working mode is stopped, heating cannot be performed, the heating function of the gas wall-mounted boiler cannot work smoothly in winter heating seasons, and the use comfort of users is affected.
Disclosure of Invention
The invention aims to: the gas heating water heater with the zero-cold-water function is provided for solving the problems that in the prior art, when a gas wall-mounted boiler is used and living hot water is used, the machine heating function stops working, heating cannot be performed, the heating function of the gas wall-mounted boiler cannot work smoothly in winter heating seasons, and the use comfort of users is affected.
In order to achieve the purpose, the invention adopts the technical scheme that:
a gas heating water heater with a zero-cold-water function comprises a domestic hot water-preheating circulating system, wherein the domestic hot water-preheating circulating system comprises a first heating pipe section, a domestic hot water pipeline, a domestic cold water pipeline and a control system, one end of the domestic hot water pipeline is communicated with one end of the domestic cold water pipeline through the first heating pipe section, a first pipe orifice is formed in the domestic hot water pipeline, a one-way three-way valve is arranged in the domestic cold water pipeline, and a water return pipeline is communicated between the first pipe orifice and a one-way port of the one-way three-way valve;
the first heated section is configured to: the aqueous liquid flowing through the first heating section can be heated;
a part of the domestic cold water pipeline between the one-way three-way valve and the first heating pipe section is connected in series with a first circulating water pump and a cold water temperature controller;
a water flow sensor is further arranged on the domestic cold water pipeline between the one-way three-way valve and the first heating pipe section;
a hot water temperature controller is communicated with a part of the domestic hot water pipeline between the first pipe orifice and the first heating pipe section;
a first electronic pressure sensor is further arranged on the domestic hot water pipeline between the first pipe orifice and the first heating pipe section;
the control system is respectively in communication connection with the cold water temperature controller, the first circulating water pump, the hot water temperature controller and the first electronic pressure sensor;
the domestic cold water pipeline is provided with a water inlet pipe port, and cold water can enter the domestic cold water pipeline through the water inlet pipe port;
wherein the content of the first and second substances,
the cold water temperature controller is used for detecting the temperature of water in the domestic cold water pipeline, converting the temperature into first temperature information and sending the first temperature information to the control system;
the water flow sensor is used for measuring the flow of water in the domestic cold water pipeline, converting the flow into first flow information and sending the first flow information to the control system;
the hot water temperature controller is used for detecting the temperature of water in the domestic hot water pipeline, converting the temperature into second temperature information and sending the second temperature information to the control system;
the first electronic pressure sensor is used for measuring the pressure in the domestic hot water pipeline, converting the pressure into first pressure information and sending the first pressure information to the control system,
the control system is used for controlling the first circulating water pump to start and stop according to the first temperature information, and regulating the rotating speed of the first circulating water pump according to the first pressure information, the first flow information, the first temperature information and the second temperature information.
The application said gas heating water heater with zero cold water function, including life hot water-preheat the circulation system, life hot water-preheat the circulation system and be independent of the heating water system of gas heating water heater outside, in the use, including following state:
first state (machine is in heating operation): if the domestic hot water is needed, when a hot water temperature controller in the domestic hot water-preheating circulating system detects that the water temperature is lower than a first temperature, a first circulating water pump is started to push water in a closed loop system formed among a domestic cold water pipeline, a first heating section, a domestic hot water pipeline and a water return pipeline to flow, the water flowing through the first heating section is heated and then enters a domestic hot water pipeline, the pressure in the domestic hot water pipeline is measured through a first electronic pressure sensor on the domestic hot water pipeline, the pressure is converted into first pressure information, the first pressure information is sent to the control system, a water flow sensor in the domestic cold water pipeline measures the flow of the water in the domestic cold water pipeline, the flow is converted into first flow information, and the first flow information is sent to the control system, the control system is used for controlling the start and stop of the first circulating water pump according to the first temperature information, and according to the first pressure information, the first flow information, the first temperature information and the second temperature information, obtaining the water flow in the closed loop system and the water temperature difference detected by the hot water temperature controller and the cold water temperature controller, adjusting the rotating speed of the first circulating water pump so as to control the water flow and further absorb heat as required, in the process, the control system adjusts the rotating speed of the first circulating water pump after receiving the first temperature information, the first flow information, the second temperature information and the first pressure information on the basis of the fact that a hot water temperature controller in a domestic hot water-preheating circulating system detects a first water temperature, and stops the heating work of a zero-cold water circulating water path until the hot water temperature controller detects that the water temperature is the first temperature; the heating water system on the heating water system continuously operates according to the set heating temperature and the heating temperature controller controls the operation according to the heating constant temperature program.
The second state (the machine is in heating constant temperature, and the heating variable-frequency circulating pump and the heating work are stopped): when a hot water temperature controller in the domestic hot water-preheating circulating system detects that the water temperature is lower than a first temperature, a first circulating water pump is started to push water in a hot water pipe and a water return pipe closed loop system to flow, a water flow sensor in a cold water pipe outputs a signal, the load is judged according to the water flow in the hot water pipe and the water return pipe closed loop system and the water temperature difference detected by the hot water temperature controller and a cold water temperature controller, the rotating speed of the first circulating water pump in a zero-cold water system is adjusted, and the water flow of the zero-cold water closed loop system in a heat exchange system is controlled; the main controller receives various signals (such as flow and temperature), continuously adjusts the valve opening gas flow of the sectional gas proportional valve, performs constant temperature program control, and stops the heating work of the zero cold water circulation water path until the hot water temperature controller detects the water temperature of 40 ℃.
In addition, in a heating mode (winter mode), when the zero-cold water system (preheating circulating system) and the heating water system work, the domestic hot water valve is opened, at the moment, the first electronic pressure sensor detects the water pressure change (relative pressure drop) of the domestic hot water system, the water flow sensor senses the water flow fluctuation (more than 0.5L/min), and the cold water temperature controller detects the temperature change (more than 5 ℃), the zero-cold water function work and the heating function work are stopped, and the domestic hot water work state is entered.
In the above scheme, the first temperature is the target temperature, typically 37 ℃ to 42 ℃, preferably 38 ℃, 39 ℃ or 40 ℃.
Among the above-mentioned scheme, one-way three-way valve plays the effect of water inlet connector, forms simultaneously and connects and preheat the circulation system wet return to guarantee that this zero cold water preheats the rivers of circulation system and can only unidirectional flow (high temperature rivers are to low temperature water) avoid scurrying the water phenomenon in this water heater uses, influence the temperature constancy.
In summary, the domestic hot water preheating circulation system with the zero cold water function is independent of a heating water system of a gas heating water heater, and reduces the influence on the heating system function when the zero cold water function in domestic water is used; the two do not interfere with each other, guarantee that hot water supply and heating function can both normally operate simultaneously, brought a great deal of facility for user's daily use.
Preferably, the water inlet pipe is disposed between the one-way three-way valve and the water flow sensor.
Preferably, the water inlet pipe is arranged on one side of the one-way three-way valve, which is far away from the water flow sensor.
Preferably, a hot water three-way valve is communicated between the water return pipeline and the domestic hot water pipeline, and the first pipe orifice is positioned on the hot water three-way valve.
Preferably, a heat exchange system is included that is capable of heating the aqueous liquid flowing through the first heated section.
Preferably, the system comprises a heating water system, and a second circulating water pump is arranged on a pipeline of the heating water system;
the heat exchange system can heat water liquid in a pipeline of the heating water system;
the control system is used for controlling the first circulating water pump to start and stop according to the first temperature information, and regulating the rotating speeds of the first circulating water pump and the second circulating water pump according to the first pressure information, the first flow information, the first temperature information and the second temperature information.
The first electronic pressure sensor measures the pressure in the domestic hot water pipeline, converts the pressure into first pressure information, sends the first pressure information to the control system, measures the flow of water in the domestic cold water pipeline by the water flow sensor in the domestic cold water pipeline, converts the flow into first flow information, sends the first flow information to the control system, judges and controls the heat load size respectively needed in the zero cold water closed loop system and the heating water closed loop system according to the water flow size in the closed loop system and the water temperature difference detected by the hot water temperature controller and the cold water temperature controller, combines and adjusts the rotating speed of the first circulating water pump and the second circulating water pump according to the information, and respectively controls the water flow of the zero cold water closed loop system and the heating water closed loop system flowing through the heat exchange system, and then reach the purpose of the heat that absorbs needs, in this process, come intelligence to provide required discharge according to the heat demand of difference to can improve total thermal utilization ratio, reduce required total heat, reach and carry out the purpose that the heat load proportion can only distribute.
Preferably, the heating system is used for heating the heat exchange system and comprises a speed regulation fan and a heating-hot water burner, and a sectional gas proportional valve is communicated between the heating-hot water burner and a gas inlet;
the control system is used for adjusting the rotating speed of the speed regulating fan and the air supply quantity of the segmented gas proportional valve according to the first pressure information, the first flow information, the first temperature information and the second temperature information.
According to the actual size of the combustion load, the control system controls the rotating speed of the speed-regulating fan and the air supply quantity of the sectional gas proportional valve to provide proper total heat, so that an ideal air-fuel ratio and high heat efficiency are achieved, and the heat supply efficiency of energy is improved.
Preferably, the heating water system further comprises a heating water supply pipe, a second heating section and a heating water return pipe which are sequentially communicated, the heat exchange system can heat water liquid in the second heating section, and a heating temperature controller is arranged on the heating water supply pipe; and a second electronic pressure sensor used for detecting the pressure of the heating water return pipe and the second circulating water pump are arranged on the heating water return pipe.
Preferably, the heating water system further comprises a heating system expansion water tank, a third pipe orifice is arranged on the heating water return pipe, the third pipe orifice is located between the second electronic pressure sensor and the intelligent second circulating water pump, the heating system expansion water tank is communicated with the third pipe orifice, and a heating system safety valve is communicated between the heating system expansion water tank and the third pipe orifice.
Preferably, a water replenishing valve is communicated between the domestic cold water pipeline and the heating water supply pipeline.
Preferably, the first heating section and/or the second heating section are arranged on the heat exchange system.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the gas heating water heater with the zero cold water function, the domestic hot water preheating circulating system is independent of a heating water system of the gas heating water heater, so that the influence on the function of the heating system when the zero cold water function in domestic water is used is reduced; the two do not interfere with each other, guarantee that hot water supply and heating function can both normally operate simultaneously, brought a great deal of facility for user's daily use.
2. The application a gas heating water heater with zero cold water function, control system judges the heat load size that needs respectively in control zero cold water closed loop system and the heating water closed loop system, and come the rotational speed of combination regulation first circulating water pump and second circulating water pump through above-mentioned information, control zero cold water closed loop system and the water flow that heat transfer system was flowed through to the heating water closed loop system respectively, and then reach the thermal purpose of absorption needs, at this in-process, come intelligence according to the heat demand of difference and provide required water flow, thereby can improve total thermal utilization ratio, reduce required total heat, reach the purpose that can only distribute of carrying out the heat load proportion.
3. The application the gas heating water heater with zero cold water function, according to the actual size of burning load, control system control speed governing fan's the rotational speed and the air supply volume of segmentation gas proportional valve provide suitable total heat, reach ideal air-fuel ratio and high thermal efficiency, improve energy heating efficiency.
4. According to the gas heating water heater with the cold water zero function, the first circulating water pump and the first circulating water pump in the heating system are additionally arranged; the speed regulation fan and the sectional gas proportional valve are reasonably proportioned in the air-fuel ratio, so that the efficiency of the equipment is improved.
5. The application a gas heating water heater with zero cold water function, the first electronic pressure sensor that increases in hot water piping system, can reach zero cold water is at the during operation in zero cold water closed system, when using cold water or using hot water, can let first circulating water pump stop work immediately, avoid the hot and cold water to crowd water, make the temperature unstable.
Drawings
Fig. 1 is a working principle diagram of the gas heating water heater with zero cold water function of the present invention (a water inlet pipe is arranged between a one-way three-way valve and a water flow sensor).
Fig. 2 is a working principle diagram of the gas heating water heater with zero cold water function of the present invention (the water inlet pipe is arranged on one side of the one-way three-way valve far from the water flow sensor).
Fig. 3 is a schematic structural front axial side view of a gas-fired heating water heater with a zero cold water function according to the present invention.
Fig. 4 is a structural rear shaft side schematic view of a gas heating water heater with a zero cold water function according to the present invention.
Icon: 1-a control system; 2-a surface controller; 3-domestic hot water-preheating circulation system; 30-a first orifice; 31-cold water temperature controller; 32-hot water temperature controller; 33-a first electronic pressure sensor; 34-a first circulating water pump; 35-a water flow sensor; 36-one-way three-way valve; 37-domestic hot water pipeline; 38-domestic cold water pipeline; 39-a first heating section; 310-a water return pipeline; 311-water inlet pipe mouth; 312-tap water inlet end; 4-a heating water system; 41-safety valve of heating system; 42-expansion water tank of heating system; 43-a second circulating water pump; 44-heating water return pipe; 45-heating water supply pipe; 46-heating temperature controller; 47-pressure display device of heating system; 48-a bypass device; 49-overheat protector; 410-a second electronic pressure sensor; 411-a second heating section; 412-a third nozzle; 413-a third orifice; 414-heating water return port; 5-wind pressure switch; 6-smoke exhaust cavity; 7-speed regulating fan; 8-an air cavity; 9-a heating system; 10-a heat exchange system; 11-heating-hot water burner; 12-a water replenishing valve; 13-a sectional gas proportional valve; 14-hot water three-way valve; 15-a wall body; 16-gas inlet end.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in fig. 1-4, a gas-fired heating water heater with zero cold water function comprises a domestic hot water-preheating circulating system 3, wherein the domestic hot water-preheating circulating system 3 comprises a first heating pipe section 39, a domestic hot water pipeline 37, a domestic cold water pipeline 38 and a control system 1, one end of the domestic hot water pipeline 37 is communicated with one end of the domestic cold water pipeline 38 through the first heating pipe section 39, a first pipe orifice 30 is arranged on the domestic hot water pipeline 37, a one-way three-way valve 36 is arranged on the domestic cold water pipeline 38, and a water return pipeline 310 is communicated between the first pipe orifice 30 and the one-way port of the one-way three-way valve 36;
the first heating section 39 is configured to: the aqueous liquid flowing through the first heated section 39 can be heated;
a first circulating water pump 34 and a cold water temperature controller 31 are connected in series with a part of the domestic cold water pipeline 38, which is positioned between the one-way three-way valve 36 and the first heating section 39;
a water flow sensor 35 is further arranged on the domestic cold water pipeline 38 between the one-way three-way valve 36 and the first heating section 39;
a hot water temperature controller 32 is communicated with a part of the domestic hot water pipeline 37, which is positioned between the first pipe orifice 30 and the first heating section 39;
a first electronic pressure sensor 33 is further arranged on the domestic hot water pipeline 37 between the first pipe orifice 30 and the first heating pipe section 39;
the control system 1 is respectively in communication connection with a cold water temperature controller 31, the first circulating water pump 34, a hot water temperature controller 32 and a first electronic pressure sensor 33;
the domestic cold water pipeline 38 is provided with a water inlet pipe 311, and cold water can enter the domestic cold water pipeline 38 through the water inlet pipe 311 at the tap water inlet end 312;
wherein the content of the first and second substances,
the cold water temperature controller 31 is configured to detect the temperature of water in the domestic cold water pipeline 38, convert the temperature into first temperature information, and send the first temperature information to the control system 1;
the water flow sensor 35 is configured to measure the flow of water in the domestic cold water pipeline 38, convert the flow into first flow information, and send the first flow information to the control system 1;
the hot water temperature controller 32 is configured to detect the temperature of the water in the domestic hot water pipeline 37, convert the temperature into second temperature information, and send the second temperature information to the control system 1;
the first electronic pressure sensor 33 is used to measure the pressure in the domestic hot water line 37, convert this pressure into first pressure information, and send the first pressure information to the control system 1,
the control system 1 is configured to control the first water circulation pump 34 to start and stop according to the first temperature information, and adjust the rotation speed of the first water circulation pump 34 according to the first pressure information, the first flow rate information, the first temperature information, and the second temperature information.
In the above-described embodiment, the target temperature of the first temperature information is generally 37 ℃ to 42 ℃, preferably 40 ℃.
In the above scheme, one-way three-way valve 36 plays the effect of water inlet connector, forms simultaneously and connects the circulating system wet return that preheats to guarantee that this zero cold water preheats the rivers of circulating system and can only unidirectional flow (high temperature water flows to low temperature water) and avoid this water heater scurrying the water phenomenon in using, influence the temperature constancy.
In summary, the domestic hot water preheating circulation system with the zero cold water function is independent of the heating water system 4 of the gas heating water heater, and reduces the influence on the heating system function when the zero cold water function in the domestic water is used; the two do not interfere with each other, guarantee that hot water supply and heating function can both normally operate simultaneously, brought a great deal of facility for user's daily use.
In one mode, the water inlet 311 is disposed between the one-way three-way valve 36 and the water flow sensor 35.
In another mode, the water inlet 311 is disposed on a side of the one-way three-way valve 36 away from the water flow sensor 35, the hot water three-way valve 14 is connected between the water return pipeline 310 and the domestic hot water pipeline 37, and the first pipe opening 30 is located on the hot water three-way valve 14.
Specifically, a heat exchange system 10 is also included, the heat exchange system 10 being capable of heating the aqueous liquid flowing through the first heating section 39.
Specifically, the heating water system 4 is further included, and a second circulating water pump 43 is arranged on a pipeline of the heating water system 4;
the heat exchange system 10 can heat the water in the pipeline of the heating water system 4;
the control system 1 is configured to control the first water circulation pump 34 to start and stop according to the first temperature information, and adjust the rotation speeds of the first water circulation pump 34 and the second water circulation pump 43 according to the first pressure information, the first flow rate information, the first temperature information, and the second temperature information.
The first circulating water pump 34 and the second circulating water pump 43 are preferably variable-frequency circulating water pumps.
Preferably, the system further comprises a heating system 9 for heating the heat exchange system 10, wherein the heating system 9 comprises a speed regulation fan 7 and a heating-hot water burner 11, and a sectional gas proportional valve 13 is communicated between the heating-hot water burner 11 and a gas inlet;
the control system 1 is configured to adjust the rotation speed of the speed-regulating fan 7 and the air supply amount of the segmented gas proportional valve 13 according to the first pressure information, the first flow information, the first temperature information, and the second temperature information.
Preferably, the heating water system 4 further includes a heating water supply pipe 45, a second heating section and a heating water return pipe 44 which are sequentially communicated, the heat exchange system 10 can heat water in the second heating section, and a heating temperature controller 46 is arranged on the heating water supply pipe 45; the heating water return pipe 44 is provided with a second electronic pressure sensor 410 for detecting the pressure of the heating water return pipe 44 and the second circulating water pump 43.
Preferably, the heating water system 4 further includes a heating system expansion water tank 42, a third pipe orifice 412 is disposed on the heating water return pipe 44, the third pipe orifice 412 is located between the second electronic pressure sensor 410 and the intelligent second circulating water pump 43, the heating system expansion water tank 42 is communicated with the third pipe orifice 412, and a heating system safety valve 41 is communicated between the heating system expansion water tank 42 and the third pipe orifice 412.
Preferably, a water replenishing valve 12 is communicated between the domestic cold water pipeline 38 and the heating water supply pipeline 45.
Specifically, the water outlet end of the heating water supply pipe 45 is further provided with a heating water outlet port 413; the heating water return pipe 44 is also provided with a heating water return port 414 at the water return end.
Preferably, the first heating section 39 and/or the second heating section 411 are provided on the heat exchange system 10.
The application said a gas heating water heater with zero cold water function, including domestic hot water-preheat circulating system 3, domestic hot water-preheat circulating system 3 and be independent of the heating water system 4 of gas heating water heater outside, in the use, including following state:
in the first state: when the machine is in heating operation, if domestic hot water is needed, when the hot water temperature controller 32 in the domestic hot water-preheating circulating system 3 detects that the water temperature is lower than a first temperature, the first circulating water pump 34 is started to push water in a closed loop system formed among the domestic cold water pipeline 38, the first heating section 39, the domestic hot water pipeline 37 and the water return pipeline 310 to flow, the water flowing through the first heating section 39 is heated and then enters the domestic hot water pipeline 37, the pressure in the domestic hot water pipeline 37 is measured through the first electronic pressure sensor 33 on the domestic hot water pipeline 37 and is converted into first pressure information, the first pressure information is sent to the control system 1, the water flow sensor 35 in the domestic cold water pipeline 38 measures the flow of the water in the domestic cold water pipeline 38 and converts the flow into first flow information, and sending the first flow information to the control system 1, where the control system 1 is configured to control the first circulation water pump 34 to start and stop according to the first temperature information, and obtain a water flow in a closed loop system and a water temperature difference detected by the hot water temperature controller 32 and the cold water temperature controller 31 according to the first pressure information, the first flow information, the first temperature information, and the second temperature information, adjust a rotation speed of the first circulation water pump 34 to control a water flow, so as to absorb heat as needed, and in this process, the control system 1 adjusts the rotation speed of the first circulation water pump 34 after receiving the first temperature information, the first flow information, the second temperature information, and the first pressure information, based on a time when the hot water temperature controller 32 in the domestic hot water-preheating circulation system 3 detects the first water temperature, gradually stopping the heating work of the zero cold water circulation water path until the hot water temperature controller 32 detects that the water temperature is the first temperature; the heating water system on the heating water system continuously operates according to the set heating temperature and is controlled by the heating temperature controller 46 according to the heating constant temperature program.
In the second state: when a hot water temperature controller 32 in a domestic hot water-preheating circulating system 3 detects that the water temperature is lower than a first temperature, a first circulating water pump 34 is started to push water in a hot water pipe and water return pipe closed loop system to flow, a water flow sensor 35 in a cold water pipe outputs a signal, the load is judged according to the water flow in the hot water pipe and water return pipe closed loop system and the water temperature difference detected by the hot water temperature controller 32 and a cold water temperature controller 31, the rotating speed of the first circulating water pump 34 in a zero-cold water system is adjusted, and the water flow of the zero-cold water closed loop system in a heat exchange system 10 is controlled; the main controller 1 receives various signals (such as flow and temperature), continuously adjusts the valve opening gas flow of the sectional gas proportional valve 13, performs constant temperature program control, and stops the heating work of the zero cold water circulation water path until the hot water temperature controller 32 detects the water temperature of 40 ℃.
The segmented fuel gas proportional valve 13 is communicated with a fuel gas inlet end 16.
One port in the one-way three-way valve can only be communicated with water in one way.
In addition, in the heating mode in winter, when the zero-cold-water system preheating circulation system and the heating water system both work, the domestic hot water valve is opened, at this time, the first electronic pressure sensor 33 detects the relative pressure drop of the water pressure change of the domestic hot water system, the water flow sensor 35 senses the water flow fluctuation (more than 0.5L/min), and the cold water temperature controller 31 detects the signal of the temperature change (more than 5 ℃), the zero-cold-water function work and the heating function work are stopped, and the domestic hot water work state is entered.
In the above scheme, the first temperature is the target temperature, generally from 37 ℃ to 42 ℃, preferably 40 ℃.
In the above scheme, one-way three-way valve 36 plays the effect of water inlet connector, forms simultaneously and connects the circulating system wet return that preheats to guarantee that this zero cold water preheats the rivers of circulating system and can only unidirectional flow (high temperature water flows to low temperature water) and avoid this water heater scurrying the water phenomenon in using, influence the temperature constancy.
The first electronic pressure sensor 33 measures the pressure in the domestic hot water pipeline 37, converts the pressure into first pressure information, transmits the first pressure information to the control system 1, measures the flow of water in the domestic cold water pipeline 38 by the water flow sensor 35 in the domestic cold water pipeline 38, converts the flow into first flow information, transmits the first flow information to the control system 1, judges and controls the heat load size respectively needed in the zero-cold water closed loop system and the heating water closed loop system according to the water flow size in the closed loop system and the water temperature difference detected by the hot water temperature controller 32 and the cold water temperature controller 31, and combines and adjusts the rotating speed of the first circulating water pump 34 and the second circulating water pump 43 by the information to respectively control the water flow of the zero-cold water closed loop system and the heating water closed loop system flowing through the heat exchange system 10, and then reach the purpose of the heat that absorbs needs, in this process, come intelligence to provide required discharge according to the heat demand of difference to can improve total thermal utilization ratio, reduce required total heat, reach and carry out the purpose that the heat load proportion can only distribute.
According to the actual size of the combustion load, the control system 1 controls the rotating speed of the speed regulating fan 7 and the air supply quantity of the sectional gas proportional valve 13 to provide proper total heat, so that an ideal air-fuel ratio and high heat efficiency are achieved, and the heat supply efficiency of energy sources is improved.
In summary, the domestic hot water preheating circulation system with the zero cold water function is independent of the heating water system 4 of the gas heating water heater, and reduces the influence on the heating system function when the zero cold water function in the domestic water is used; the two do not interfere with each other, guarantee that hot water supply and heating function can both normally operate simultaneously, brought a great deal of facility for user's daily use.
The equipment of the embodiment is additionally provided with a first circulating water pump 34 and a first circulating water pump 34 in a heating system; the speed regulation fan 7 and the sectional gas proportional valve 13 are reasonably proportioned on the air-fuel ratio, so that the efficiency of the equipment is improved.
The first electronic pressure sensor 33 added in the hot water pipeline system can enable the first circulating water pump 34 to stop working immediately when the zero cold water works and the cold water or the hot water is used in the zero cold water closed system, so that the cold water and the hot water are prevented from mixing and the water temperature is unstable.
Example 2
As shown in fig. 1, the gas-fired heating water heater with zero cold water function according to the present embodiment includes a furnace body, a control system 1 inside the furnace body, and a domestic hot water-preheating circulating system 3; the domestic hot water-preheating circulation system 3 includes: a first circulating water pump 34, a cold water temperature controller 31, a hot water temperature controller 32, a water flow sensor 35, a one-way three-way valve 36, a first electronic pressure sensor 33, and a domestic hot water pipeline 37 and a domestic cold water pipeline 38 which are connected with an e interface and an f interface of the heat exchange system 10; the first circulating water pump 34 is a variable-frequency speed-regulating water pump and is connected in series in a domestic cold water pipeline 38; the water flow in the domestic hot water/preheating circulating closed system can be controlled by adjusting the rotating speed of the water pump; the water flow sensor 35 is connected in series in the domestic cold water pipeline 38 and is used for measuring the water flow in the domestic hot water-preheating circulating system 3; the first electronic pressure sensor 33 is connected in series in the domestic hot water pipeline 37 and is used for measuring the relative pressure in the domestic hot water-preheating circulating system 3; a hot water temperature controller 32 is arranged on the domestic hot water pipeline 37, and a cold water temperature controller 31 is arranged on the domestic cold water pipeline 38; the domestic cold water pipeline 38 is provided with a one-way three-way valve 36, so that when the zero-cold water closed system circularly heats, water flow can only flow in one direction (a hot water end flows to a cold water end).
The heating water system 4 includes: the heating water supply pipe 45 and the heating water return pipe 44 are connected with an h interface and a g interface of the heat exchange system 10 in the heating system 9; a heating temperature controller 46 and an overheat protector 49 are arranged on the heating water supply pipe; and a second circulating water pump 43 is arranged on the heating water return pipe 44 and used for controlling the circulating water flow of the heating water in the heating water closed system.
The heat exchange system 10 is preferably a tube-in-tube heat exchange system.
The heating system 9 is a combustion chamber comprising: the heating-hot water combustor 11, the smoke exhaust cavity 6 and the speed regulation fan 7; the heat exchange system 10 is a heat exchanger, and is respectively connected with a domestic hot water pipeline 37, a heat exchanger domestic cold water pipeline 38, a heating water supply pipe 45 and a heating water return pipe 44; the heat exchanger life cold water pipeline 38 is connected with a tap water inlet pipe, and a water flow sensor 35 and a one-way three-way valve 36 are arranged on the heat exchanger life cold water pipeline 38; the bottom of the heating-hot water combustor 11 is provided with a sectional gas proportional valve 13; the surface of the furnace body is provided with a surface controller 2, and the control system 1 is connected with the surface controller 2.
The outside of heating system 9, discharge fume chamber 6 and speed governing fan 7 is equipped with air chamber 8, speed governing fan 7 passes air chamber 8 and external intercommunication, and speed governing fan 7 is controlled to wind pressure switch 5.
As an optimized scheme of this embodiment, on the basis of a domestic hot water system of a conventional gas-fired heating water heater, a set of a first circulating water pump 34, a one-way three-way valve 36, a first electronic pressure sensor 33, a hot water temperature controller 32, a cold water temperature controller 31 and a water flow sensor 35 are added; when the hot water temperature controller 32 detects that the water temperature in the domestic hot water pipeline 37 is lower than 40 ℃, the first circulating water pump 34 is started to push water in the hot water pipe and the water return pipe closed loop system to flow, signals are output through the water flow sensor 35 in the domestic cold water pipeline 38 and the first electronic pressure sensor 33 on the domestic hot water pipeline 37, the load size is judged according to the water flow size in the hot water pipe and the water return pipe closed loop system and the water temperature difference detected by the hot water temperature controller 32 and the cold water temperature controller 31, the rotating speeds of the first circulating water pump 34 in the zero-cold water system and the second circulating water pump 43 in the heating system are adjusted in a combined mode, and the water flows of the zero-cold water closed loop system and the heating water closed loop system in the heat exchange system 10 are controlled respectively; in the process, the main controller 1 receives various signals (such as flow, temperature, pressure and the like) and then continuously adjusts the valve opening gas flow of the sectional gas proportional valve 13 to carry out constant temperature program control on the basis that the hot water temperature controller 32 in the domestic hot water-preheating circulating system 3 detects the water temperature of 40 ℃, and the heating work of the zero cold water circulating water path is stopped until the hot water temperature controller 32 detects the water temperature of 40 ℃. The heating water system continues to work according to the set heating temperature and is controlled by the heating temperature controller 46 according to a heating constant temperature program; the influence on the function of the heating system when the zero cold water function of the domestic water is used is reduced; the two do not interfere with each other, guarantee that hot water supply and heating function can both normally operate simultaneously, brought a great deal of facility for user's daily use.
In the above solution, the domestic hot water pipeline 37 passes through the wall 15 and is supported by the wall 15.
As an optimized scheme of this embodiment, a hot water temperature controller 32, a first electronic pressure sensor 33 and a first circulating water pump 34 are arranged on the domestic hot water pipeline 37; wherein the first electronic pressure sensor 33 is used for measuring the relative pressure magnitude in the domestic hot water-preheating circulation system 3; when the zero cold water function is running, the relative pressure drop in the closed system is detected, an output signal is sent out by the main controller to stop the first circulating water pump 34 to stop the running of the zero cold water function.
As an optimized scheme of this embodiment, an air chamber 8 is provided outside the hot water heating system 9, the smoke exhaust chamber 6 and the speed regulation fan 7, the speed regulation fan 7 passes through the air chamber 8 to communicate with the outside, and the air chamber 8 also provides sufficient oxygen for the combustion of the heating-hot water combustion engine 11.
As an optimized scheme of the embodiment, a heating temperature controller 46 and an overheat protector 49 are arranged on the heating water supply pipe 45; the heating water return pipe 44 is provided with a second electronic pressure sensor 410 and a second circulating water pump 43; wherein the second electronic pressure sensor 410 is used for detecting the pressure of the heating water closed system; and the first circulating water pump 34 can adjust the flow of the heating circulating water to ensure the needs of people.
As a preferable solution of this embodiment, a bypass device 48 is provided between the heating water supply pipe 45 and the heating water return pipe 44; a heating system pressure display device 47 is arranged on the heating water return pipe 44;
as an optimized solution of the embodiment, the heating water system 4 further includes a heating system expansion water tank 42, and the heating system expansion water tank 42 is connected to a heating water return pipe 44; a heating system safety valve 41 is arranged between the heating system expansion water tank 42 and the heating water return pipe 44.
As an optimized scheme of this embodiment, a water replenishing valve 12 is disposed between the cold water pipe and the heating water outlet pipe of the heat exchanger.
As an optimized scheme of this embodiment, the control system 1 is respectively connected to the water flow sensor, each temperature controller and each valve; the inside of the water heater is monitored and controlled through the water flow sensor, the temperature controllers and the valves, so that the normal operation of the water heater is ensured, and the maximum requirements of people are met.
When the domestic hot water is used, the embodiment is divided into two using states:
1. when the machine is set to be in a heating mode (winter mode) or a summer mode, a zero cold water function switch is turned on the surface controller, when domestic hot water is not used for a long time, the temperature of water in a domestic hot water pipeline 37 can be slowly reduced, if a hot water faucet is turned on due to too low temperature, the discharged water is cold water, and the daily use comfort of people is influenced; at this time, the hot water temperature controller 32 senses that the water temperature is reduced to 40 ℃ which is preset by the control system 1, and the control system 1 controls the first circulating water pump 34 to operate; after the first circulating water pump 34 is started, water in the hot water pipe and the water return pipe closed loop system is pushed to flow, signals are output through the water flow sensor 35 in the cold water pipe, the load is judged according to the water flow in the hot water pipe and the water return pipe closed loop system and the water temperature difference detected by the hot water temperature controller 32 and the cold water temperature controller 31, the rotating speeds of the first circulating water pump 34 in the zero-cold water system and the second circulating water pump 43 in the heating system are adjusted in a combined mode, and the water flows of the zero-cold water closed loop system and the heating system in the heat exchange system 10 are controlled respectively; in the process, the main controller 1 continuously adjusts the valve opening gas flow of the sectional gas proportional valve 13 after receiving various signals (such as flow and temperature) on the basis of the condition that the hot water temperature controller 32 in the domestic hot water-preheating circulating system 3 detects the water temperature of 40 ℃, performs constant temperature program control, and stops the circulating heating work of the zero cold water closed water path until the hot water temperature controller 32 gradually detects the water temperature of 40 ℃; at this time, the water coming out of the hot water faucet is within the preset temperature range of the control system 1, so that the function of zero cold water is realized, and the comfort of using hot water by people is facilitated.
2. When people use hot water, the domestic hot water valve is opened, at this time, the first electronic pressure sensor 33 detects the water pressure change (relative pressure drop) of the domestic hot water system, the water flow sensor 35 senses the water flow fluctuation (more than 0.5L/min) and the cold water temperature controller 31 detects the temperature change (more than 5 ℃) signal, the zero cold water function work and the heating function work are stopped, and the domestic hot water work state is entered. Because the water heater carries out circulating heating on water in the hot water pipeline and the return water pipeline through the domestic hot water-preheating circulating system 3 to realize the function of zero cold water, hot water is discharged when a hot water faucet is opened, no cold water is discharged, and the comfort of people for using hot water is improved.
In this embodiment, when the heating water system 4 is used, the zero cold water function of a user when hot water is used is not affected, the heating circulating water enters the heating system 9 through the heating water return pipe 44, the heating circulating water is heated through the heating-hot water burner 11 and the heat exchange system 10, the indoor heating temperature is ensured, and the heating circulating water enters the heating circulating pipe through the heating water supply pipe 45 after being heated; when the water amount in the heating circulation pipe is insufficient, the water amount can be supplied to the heating water system 4 through the heating system expansion water tank 42 and the water supplement valve 12.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The gas heating water heater with the zero-cold-water function is characterized by comprising a domestic hot water-preheating circulating system (3), wherein the domestic hot water-preheating circulating system (3) comprises a first heating pipe section (39), a domestic hot water pipeline (37), a domestic cold water pipeline (38) and a control system (1), one end of the domestic hot water pipeline (37) is communicated with one end of the domestic cold water pipeline (38) through the first heating pipe section (39), a first pipe orifice (30) is formed in the domestic hot water pipeline (37), a one-way three-way valve (36) is formed in the domestic cold water pipeline (38), and a water return pipeline (310) is communicated between the first pipe orifice (30) and the one-way port of the one-way three-way valve (36);
the first heating section (39) is configured to: the aqueous liquid flowing through the first heating section (39) can be heated;
a first circulating water pump (34) and a cold water temperature controller (31) are connected in series with a part of the domestic cold water pipeline (38) between the one-way three-way valve (36) and the first heating section (39);
a water flow sensor (35) is further arranged on the domestic cold water pipeline (38) between the one-way three-way valve (36) and the first heating section (39);
a hot water temperature controller (32) is communicated with a part of the domestic hot water pipeline (37) between the first pipe orifice (30) and the first heating pipe section (39);
a first electronic pressure sensor (33) is further arranged on the domestic hot water pipeline (37) between the first pipe orifice (30) and the first heating pipe section (39);
the control system (1) is respectively in communication connection with a cold water temperature controller (31), the first circulating water pump (34), a hot water temperature controller (32) and a first electronic pressure sensor (33);
the domestic cold water pipeline (38) is provided with a water inlet pipe opening (311), and cold water can enter the domestic cold water pipeline (38) through the water inlet pipe opening (311);
wherein the content of the first and second substances,
the cold water temperature controller (31) is used for detecting the temperature of water in the domestic cold water pipeline (38), converting the temperature into first temperature information and sending the first temperature information to the control system (1);
the water flow sensor (35) is used for measuring the flow of water in the domestic cold water pipeline (38), converting the flow into first flow information and sending the first flow information to the control system (1);
the hot water temperature controller (32) is used for detecting the temperature of water in the domestic hot water pipeline (37), converting the temperature into second temperature information and sending the second temperature information to the control system (1);
the first electronic pressure sensor (33) is used for measuring the pressure in the domestic hot water pipeline (37), converting the pressure into first pressure information and sending the first pressure information to the control system (1),
the control system (1) is used for controlling the first circulating water pump (34) to start and stop according to the first temperature information, and regulating the rotating speed of the first circulating water pump (34) according to the first pressure information, the first flow information, the first temperature information and the second temperature information.
2. The gas-fired heating and water-heating boiler with a zero cold water function according to claim 1, wherein the water inlet pipe port (311) is provided between the one-way three-way valve (36) and the water flow sensor (35).
3. The gas-fired heating and water-heating boiler with a zero cold water function according to claim 1, wherein the water inlet pipe port (311) is provided at a side of the one-way three-way valve (36) away from the water flow sensor (35).
4. The gas-fired heating water heater with the zero cold water function as claimed in claim 3, wherein a hot water three-way valve (14) is communicated between the water return pipeline (310) and the domestic hot water pipeline (37), and the first pipe orifice (30) is positioned on the hot water three-way valve (14).
5. The gas-fired heating water heater with zero cold water function as claimed in any one of claims 1 to 4, characterized by comprising a heat exchange system (10), said heat exchange system (10) being capable of heating the water flowing through said first heating section (39).
6. The gas-fired heating water heater with the zero cold water function according to claim 5, characterized by comprising a heating water system (4), wherein a second circulating water pump (43) is arranged on a pipeline of the heating water system (4);
the heat exchange system (10) can heat water liquid in a pipeline of the heating water system (4);
the control system (1) is used for controlling the first circulating water pump (34) to start and stop according to the first temperature information, and regulating the rotating speeds of the first circulating water pump (34) and the second circulating water pump (43) according to the first pressure information, the first flow information, the first temperature information and the second temperature information.
7. The gas heating water heater with the zero cold water function is characterized by further comprising a heating system (9) for heating the heat exchange system (10), wherein the heating system (9) comprises a speed-regulating fan (7) and a heating-hot water burner (11), and a sectional gas proportional valve (13) is communicated between the heating-hot water burner (11) and a gas inlet;
the control system (1) is used for adjusting the rotating speed of the speed regulating fan (7) and the air supply quantity of the sectional gas proportional valve (13) according to the first pressure information, the first flow information, the first temperature information and the second temperature information.
8. The gas-fired heating water heater with zero cold water function as claimed in claim 6, wherein the heating water system (4) comprises a heating water supply pipe (45), a second heating section (411) and a heating water return pipe (44) which are sequentially communicated, the heat exchange system (10) can heat water in the second heating section (411), and a heating temperature controller (46) is arranged on the heating water supply pipe (45); and a second electronic pressure sensor (410) for detecting the pressure of the heating water return pipe (44) and the second circulating water pump (43) are arranged on the heating water return pipe (44).
9. The gas-fired heating and water-heating boiler with zero cold water function according to claim 8, characterized in that the first heating section (39) and/or the second heating section (411) is provided on the heat exchange system (10).
10. The gas-fired heating water heater with zero cold water function as claimed in claim 8, wherein a water replenishing valve (12) is communicated between the domestic cold water pipeline (38) and the heating water supply pipe (45).
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| CN114294821A (en) * | 2021-12-30 | 2022-04-08 | 艾欧史密斯(中国)热水器有限公司 | Heating and water heating equipment and control method thereof |
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