CN110398055A - Zero-cold-water gas water heater capable of limiting preheating temperature and control method thereof - Google Patents
Zero-cold-water gas water heater capable of limiting preheating temperature and control method thereof Download PDFInfo
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- CN110398055A CN110398055A CN201910694789.8A CN201910694789A CN110398055A CN 110398055 A CN110398055 A CN 110398055A CN 201910694789 A CN201910694789 A CN 201910694789A CN 110398055 A CN110398055 A CN 110398055A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 402
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 49
- 239000007789 gas Substances 0.000 claims description 190
- 238000009413 insulation Methods 0.000 claims description 38
- 239000000567 combustion gas Substances 0.000 claims description 20
- 239000000523 sample Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 2
- 230000006870 function Effects 0.000 description 12
- 230000001276 controlling effect Effects 0.000 description 6
- 238000011897 real-time detection Methods 0.000 description 4
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-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
- F24H1/12—Continuous-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
- F24H1/14—Continuous-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 by tubes, e.g. bent in serpentine form
- F24H1/145—Continuous-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 by tubes, e.g. bent in serpentine form using fluid fuel
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Temperature (AREA)
Abstract
The invention discloses a zero-cold-water gas water heater capable of limiting preheating temperature, which comprises a zero-cold-water gas water heater body, and a built-in water pump, a water outlet temperature detection module, a return water temperature detection module, a gas control valve and an operation display module which are electrically connected with a controller; the invention also discloses a control method of the zero-cold-water gas water heater for limiting the preheating temperature, which starts the preheating mode; detecting a preset temperature TPreset of(ii) a Judging the preset temperature TPreset ofWhether or not: t isPreset of＞TPreheating max(ii) a If not, according to the preset temperature TPreset ofControlling the temperature of the circulating pipeline water storage; if yes, presetting the temperature TPreset ofIs reduced to a target preheating temperature TTargetThen according to the target preheating temperature TTargetAnd controlling the temperature of the circulating pipeline storage water. The zero-cold-water gas water heater and the control method thereof can solve the problem of the existing zero-cold-water gas water heaterThe problem of overhigh water temperature stored in a circulating pipeline of the water heater.
Description
Technical field
The invention belongs to zero cold water gas heater technical fields, and in particular to a kind of zero cold water combustion for limiting preheating temperature
Gas water heater and its control method.
Background technique
Current zero cold water gas heater has become water heater industrial trend because it can be realized hot water plug and play, starting
When pre- heat function, the built-in circulating pump operating in zero cold water gas heater is set, it will be outside the machine of zero cold water gas heater
Water in hot water outlet pipe, return pipe is drawn back zero cold water gas heater and is preheated, and circulation line is formed, and realizes preheating.
In warm, zero cold water gas heater adjusts firepower, makes according to the deviation of leaving water temperature and preset temperature
Leaving water temperature reaches preset temperature.The preset temperature setting range of gas heater is generally 35 DEG C~60 DEG C.When zero cold water fires
When the preset temperature of gas water heater is excessively high (such as 60 DEG C), after zero cold water gas heater starts pre- heat function, zero cold water combustion gas heat
Hydrophone controls water temperature according to preset temperature, and after completing preheating, the water water temperature in circulation line is close to 60 DEG C, if user beats at this time
When opening hot water tap using hot water, there is the risk being burned.
Summary of the invention
In order to solve the problems, such as that zero cold water gas heater circulation line memory coolant-temperature gage is excessively high, providing one kind can be limited
Zero cold water gas heater of water preheating temperature in circulation line.
It is a further object of the present invention to provide a kind of control methods of water preheating temperature in limitation circulation line.
The present invention provides a kind of zero cold water gas heater for limiting preheating temperature, including zero cold water gas heater sheet
Body, built-in water pump, leaving water temperature detection module, return water temperature detection module, gas control valve, Operation display module, and control
Device；
Built-in water pump is arranged on the zero intrinsic water-flowing path of cold water gas heater, for detecting going out for leaving water temperature
Coolant-temperature gage detection module is arranged in the zero intrinsic water outlet of cold water gas heater, for detecting the return water temperature of return water temperature
The combustion of on-off and gas flow for controlling combustion gas in the zero intrinsic water inlet end of cold water gas heater is arranged in detection module
Gas control valve is arranged on the zero intrinsic admission line of cold water gas heater, for set temperature, starting preheating mode, note
It records the preheating insulation time and shows that the Operation display module of preset temperature is arranged on zero cold water gas heater outer body wall,
Operation display module, built-in water pump, leaving water temperature detection module, return water temperature detection module, gas control valve are and controller
It is electrically connected.
Preferably, Operation display module includes the temperature setting key for set temperature, for starting zero cold water combustion gas heat
The preheating function key of hydrophone preheating mode, and the display screen for showing preset temperature；
Temperature setting key, preheating function key and display screen are electrically connected with controller.
Preferably, temperature setting key includes heating key and cooling key.
Preferably, leaving water temperature detection module is leaving water temperature detection probe；Return water temperature detection module is return water temperature
Detection probe.
The present invention also provides a kind of control methods of zero cold water gas heater for limiting preheating temperature, including walk as follows
It is rapid:
Start the preheating mode of zero cold water gas heater ontology；
Detect the preset temperature T of zero cold water gas heater ontologyIt is default；
Judge preset temperature TIt is defaultWhether meet: TIt is default> TPreheat max, wherein TPreheat maxFor the maximum of preheating temperature threshold range
Preheating temperature；
If it is not, then controller is according to preset temperature TIt is defaultControl loop pipeline water temperature；
If so, controller is automatically by preset temperature TIt is defaultIt turns down to target preheating temperature TTarget, temperature is preheated further according to target
Spend TTargetControl loop pipeline water temperature, target preheating temperature TTargetFor any temperature value in preheating temperature threshold range.
Preferably, preset temperature T is adjustedIt is defaultThe step of range includes:
Zero cold water gas heater ontology is under preheating mode, detects return water temperature TReturn water；
Judge return water temperature TReturn waterWhether meet；TReturn water> TIt is default；
If it is not, then zero cold water gas heater ontology of controller control continues to preheating mode, and preset temperature TIt is default's
Setting range maintains preheating temperature threshold range；
If so, controller, which controls zero cold water gas heater ontology, exits preheating mode, Operation display module is preset
Temperature TIt is defaultSetting range revert to preset temperature threshold range from preheating temperature threshold range, and switch to preheating insulation mould
Formula or general mode.
Preferably, after zero cold water gas heater ontology of controller control switches to preheating insulation mode, return water temperature is detected
Spend TReturn water, and record accumulative preheating insulation time t；
Controller judges return water temperature TReturn waterWhether program holding temperature is less than:
If so, controller, which controls zero cold water gas heater ontology, exits preheating insulation mode, preheating mode is switched to；
If it is not, then controller judges whether preheating insulation time t exceeds program soaking time:
If so, controller, which controls zero cold water gas heater ontology, exits preheating insulation mode, general mode is switched to；
If it is not, then controller controls zero cold water gas heater ontology maintenance preheating insulation mode.
Preferably, the step of preheating mode of zero cold water gas heater ontology of starting includes:
Start the preheating mode of zero cold water gas heater ontology by Operation display module, and by zero cold water gas and hot water
The information of device ontology starting preheating mode is sent to controller；
After controller receives the information for the zero cold water gas heater ontology starting preheating mode that Operation display module is sent,
The controller control built-in water pump starting, control gas control valve are opened, then zero cold water gas heater ontology enters preheating
Mode.
Compared with prior art, zero cold water gas heater of limitation preheating temperature of the invention having using the above scheme
Beneficial effect are as follows:
After the starting of built-in water pump, the intrinsic water-flowing path of zero cold water gas heater and zero cold water gas heater sheet
External return pipe constitutes circulation line, and return water temperature detection module being capable of the water inlet of zero cold water gas heater ontology of real-time detection
The return water temperature at end, leaving water temperature detection module are capable of the water temperature out of zero cold water gas heater ontology water outlet of real-time detection
Degree, Operation display module is for set temperature, starting preheating mode, record preheating time and display preset temperature, i.e., for leading to
The preset temperature that Operation display module sets zero cold water gas heater ontology is crossed, determines when to make zero by Operation display module
Cold water gas heater ontology enters preheating mode, while after zero cold water gas heater ontology enters preheating insulation mode,
Automatically record the preheating insulation time of preheating insulation mode；Gas control valve is used to control the on-off and gas flow of combustion gas；
Because of Operation display module, built-in water pump, leaving water temperature detection module, return water temperature detection module, combustion gas control
Valve electrically connects with controller, so when user sets preset temperature by Operation display module, and start zero cold water combustion gas heat
When the preheating mode of hydrophone ontology, controller receives corresponding information, and controller then controls built-in pump operation, combustion gas control
Valve is opened, wherein built-in pump operation can be such that the water in circulation line starts the cycle over, gas control valve opening can make to fire
Gas, which enters in zero cold water gas heater ontology to be lighted, heats the water recycled in circulation line, realizes preheating.
Controller controls the stream of gas control valve according to the relationship between return water temperature, leaving water temperature, preset temperature simultaneously
Aperture is measured, combusting firepower is adjusted, controls leaving water temperature, the preheating temperature of recirculated water in circulation line is limited, to solve existing
The excessively high problem of zero cold water gas heater circulation line memory coolant-temperature gage.
Compared with prior art, the control method of zero cold water gas heater of limitation preheating temperature of the invention is using upper
The beneficial effect for stating technical solution is:
Start the preheating mode of zero cold water gas heater ontology；Detect preset temperature TIt is default；Judge preset temperature TIt is defaultIt is
No satisfaction: TIt is default> TPreheat max, if it is not, then according to preset temperature TIt is defaultControl loop pipeline water preheating temperature；If so, control
Device is first automatically by preset temperature TIt is defaultIt turns down to target preheating temperature TTarget, further according to target preheating temperature TTargetControl loop pipeline
Water preheating temperature, target preheating temperature TTargetFor any temperature value in preheating temperature threshold range；I.e. the present invention passes through first
TIt is defaultWith TPreheat maxComparison, it is ensured that user preset temperature TIt is defaultPreheating temperature threshold range in safety, avoid the occurrence of due to
Family preset temperature problem that is excessively high, and causing circulation line memory coolant-temperature gage excessively high, it is ensured that bath water-temperature is suitable for meeting user's need
It asks.
Detailed description of the invention
Fig. 1 is a kind of structural representation of zero cold water gas heater of limitation preheating temperature that the embodiment of the present invention 1 provides
Figure；
Fig. 2 is that a kind of zero cold water gas heater of limitation preheating temperature that the embodiment of the present invention 1 provides does not have external water
The structural schematic diagram when access of road；
Fig. 3 is a kind of control stream of the control method of zero cold water gas heater for limiting preheating temperature provided by the invention
Cheng Tu；
Fig. 4 is a kind of control method of zero cold water gas heater of limitation preheating temperature that the embodiment of the present invention 2 provides
Control flow chart；
Fig. 5 is a kind of control method of zero cold water gas heater of limitation preheating temperature that the embodiment of the present invention 3 provides
Control flow chart；
In figure: 1, zero cold water gas heater ontology；2, built-in water pump；3, leaving water temperature detection module；4, combustion gas controls
Valve；5, Operation display module；51, temperature setting key；52, function key is preheated；53, display screen；6, controller；7, return water temperature is examined
Survey module.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
Usually there are following several modes: general mode, preheating mode and preheating insulation mode in zero cold water gas heater；
Wherein general mode includes zero cold water gas heater normal operating conditions and standby mode.
Embodiment 1
The present embodiment provides a kind of zero cold water gas heaters for limiting preheating temperature, as Figure 1-Figure 2, including zero cold
Water gas heater ontology 1, built-in water pump 2, leaving water temperature detection module 3, return water temperature detection module 7, gas control valve 4,
Operation display module 5 and controller 6；
Built-in water pump 2 is arranged on the water-flowing path in zero cold water gas heater ontology 1, for detecting leaving water temperature
The water outlet in zero cold water gas heater ontology 1 is arranged in leaving water temperature detection module 3, for detecting the return water of return water temperature
The water inlet end in zero cold water gas heater ontology 1 is arranged in temperature detecting module 7, for controlling the on-off and combustion gas stream of combustion gas
The gas control valve 4 of amount is arranged on the admission line in zero cold water gas heater ontology 1, pre- for set temperature, starting
The Operation display module 5 of heat pattern, record preheating insulation time and display preset temperature is arranged in zero cold water gas heater sheet
On 1 lateral wall of body, Operation display module 5, built-in water pump 2, leaving water temperature detection module 3, return water temperature detection module 7, combustion gas
Control valve 4 is electrically connected with controller.
Water-flowing path and zero cold water gas heater after the starting of built-in water pump 2, in zero cold water gas heater ontology 1
This external return pipe constitutes circulation line, and return water temperature detection module 7 being capable of zero cold water gas heater ontology 1 of real-time detection
The return water temperature of water inlet end, leaving water temperature detection module 3 are capable of going out for zero cold water gas heater ontology of real-time detection, 1 water outlet
Coolant-temperature gage, Operation display module 5 are used for set temperature, starting preheating mode, record preheating time and display preset temperature
In the preset temperature for setting zero cold water gas heater ontology 1 by Operation display module 5, what is determined by Operation display module
When make zero cold water gas heater ontology 1 enter preheating mode, while when zero cold water gas heater ontology 1 enter preheating insulation
After mode, the time of preheating insulation mode is automatically recorded；Gas control valve 4 is used to control the on-off and gas flow of combustion gas；
Because Operation display module 5, built-in water pump 2, gas control valve 4 are electrically connected with controller 6, work as user
When setting preset temperature by Operation display module 5, and starting the preheating mode of zero cold water gas heater ontology 1, controller
6 receive corresponding information, and controller 6 then controls built-in water pump 2 and operates, and gas control valve 4 is opened, wherein built-in water pump 2 is transported
Turn that the water in circulation line can be made to start the cycle over, the opening of gas control valve 4 can make combustion gas enter zero cold water gas and hot water
It is lighted in device ontology 1 and the water recycled in circulation line is heated, realize preheating；
Again because leaving water temperature detection module 3, return water temperature detection module 7 are electrically connected with controller 6, control
Device 6 can timely receive leaving water temperature and return water temperature, according to the pass between leaving water temperature, return water temperature and preset temperature
System switches the mode of zero cold water gas heater, or controls the opening and closing of built-in water pump 2 and gas control valve 4,
Control loop pipeline memory coolant-temperature gage, the existing zero cold water gas heater circulation line memory coolant-temperature gage of solution is excessively high to ask
Topic.
In a particular embodiment, Operation display module 5 includes the temperature setting key 51 for set temperature, for starting zero
The preheating function key 52 of cold water gas heater preheating mode, and the display screen 53 for showing preset temperature；
Temperature setting key 51, preheating function key 52 and display screen 53 are electrically connected with controller 6；
User sets preset temperature by temperature setting key 51, and the temperature of setting is shown on display screen 53, convenient
User's viewing；User can start the pre- hot-die of zero cold water gas heater by pressing preheating function key 52 according to their needs
Formula, it is user-friendly.
In a particular embodiment, temperature setting key 51 includes heating key and cooling key, and it is quicker to be able to use family in this way
Temperature is set in itself needs temperature value.
In a particular embodiment, leaving water temperature detection module 3 is leaving water temperature detection probe；Return water temperature detection module 7
For return water temperature detection probe, temperature measuring probe is to belong to existing product, can be directly obtained by purchase, and structure letter
It is single, it is cheap, reduce the production cost of the present embodiment.
The working process of this embodiment is as follows:
Zero cold water gas heater ontology 1 is set by preheating function key 52 and enters preheating mode, passes through temperature setting key
51 setting preset temperatures, it is built-in after display screen 53 shows that preset temperature, zero cold water gas heater ontology 1 enter preheating mode
Water pump 2 operates, and gas control valve 4 is opened, and combustion gas, which enters in zero cold water gas heater ontology 1, lights, in circulation line
Water is preheated, and return water temperature detection module 7 is used to detect the return water temperature of zero cold water gas heater ontology 1, water outlet detection
Module 3 is used to detect the leaving water temperature of zero cold water gas heater ontology 1, and return water temperature, leaving water temperature are fed back to control
Device 6, controller 6 control the Working mould of zero cold water gas heater ontology 1 according to return water temperature, leaving water temperature, preset temperature
It is excessively high to solve existing zero cold water gas heater circulation line memory coolant-temperature gage for formula, and control loop pipeline memory coolant-temperature gage
The problem of.
The present invention provides a kind of control method of zero cold water gas heater for limiting preheating temperature, as shown in figure 3, should
Method includes the following steps:
S1, the preheating mode for starting zero cold water gas heater ontology 1；
S2, the preset temperature T for detecting zero cold water gas heater ontology 1It is default；
S3, judge preset temperature TIt is defaultWhether meet: TIt is default> TPreheat max, wherein TPreheat maxMost for preheating temperature threshold range
Big preheating temperature；
If it is not, then controller 6 is according to preset temperature TIt is defaultControl loop pipeline water temperature；
If so, controller 6 is first automatically by preset temperature TIt is defaultIt turns down to target preheating temperature TTarget, preheated further according to target
Temperature TTargetControl loop pipeline water temperature, target preheating temperature TTargetFor any temperature value in preheating temperature threshold range.
Wherein preheating temperature threshold range is the preset temperature when zero cold water gas heater ontology is in preheating mode
TIt is defaultSetting range, be the temperature range pre-deposited in zero cold water gas water heater controller；
Preheating temperature threshold range can be 35 DEG C~50 DEG C, then TPreheat maxIt is just 50 DEG C；It is avoided that user is excessively high to set
Determine preset temperature TIt is default, cause circulating line memory coolant-temperature gage excessively high, and caused by scald.
Embodiment 2
The present embodiment provides a kind of control methods of zero cold water gas heater for limiting preheating temperature, as described in Fig. 4,
This method comprises the following steps:
S1, the pre- hot-die for starting zero cold water gas heater ontology 1 by the preheating function key 52 of Operation display module 5
Formula, controller 6 control built-in water pump 2 and operate, and control gas control valve 4 is opened, zero cold water water heater body 1 from general mode into
Enter preheating mode；
S2, controller 6 record preset temperature T when zero cold water gas heater ontology 1 opens preheating modeIt is default, return water
Temperature detecting module 7 detects return water temperature TReturn water, and by return water temperature TReturn waterIt is sent to controller 6；
S3, controller 6 judge preset temperature TIt is defaultWhether meet: TIt is default> TPreheat max, wherein TPreheat maxFor preheating temperature threshold value
The maximum preheating temperature of range；If it is not, then carrying out S31；If so, carrying out S32:
S31, controller 6 receive the return water temperature T that return water temperature detection module 7 is sentReturn water, and judge return water temperature
TReturn waterWhether meet；TReturn water> TIt is default；
If it is not, then zero cold water gas heater ontology 1 of the control of controller 6 continues to preheating mode, and preset temperature TIt is default
Setting range be preheating temperature threshold range；
If so, controller 6, which controls zero cold water gas heater ontology 1, exits preheating mode, while controlling preset temperature
TIt is defaultSetting range revert to preset temperature threshold range from preheating temperature threshold range, into general mode；
S32, controller 6 are automatically by preset temperature TIt is defaultIt turns down to target preheating temperature TTarget, repeat S31.
The present embodiment passes through first judges TIt is defaultWith preheating temperature TPreheat maxRelationship, can be by circulation line memory coolant-temperature gage
Control is in maximum preheating temperature TPreheat maxHereinafter, avoiding the occurrence of since user preset temperature is excessively high, and lead to water in circulation line
The excessively high problem of temperature；
Then, by judging return water temperature TReturn waterWith TIt is defaultRelationship, work as TReturn water< TIt is defaultWhen, then maintain preheating mode；Work as TReturn water
> TIt is defaultWhen, preheating mode is directly exited, into general mode.
When preset temperature threshold range is that zero cold water gas heater ontology 1 is in general mode in the present embodiment, prestore
Preset temperature range in controller 6；Preheating temperature threshold range is that zero cold water gas heater ontology 1 is in preheating mode
When, the preheating temperature range that is pre-stored in controller 6；
Such as preset temperature threshold may range from 35 DEG C~60 DEG C in the present embodiment, preheating temperature threshold range can be with
It is 35 DEG C~50 DEG C；When zero cold water gas heater ontology is in preheating mode, preset temperature TIt is defaultSetting range be
35 DEG C~50 DEG C；When zero cold water gas heater ontology exits preheating mode, then its preset temperature TIt is defaultSetting range restore
It is 35 DEG C~60 DEG C；It is that user is in zero cold water gas heater of normal use for convenience in this way, the setting model of preset temperature
Enclose it is more wide in range, meet under different situations adjusting bathing temperature demand.
The present embodiment is by comparing return water temperature TReturn waterWith preset temperature TIt is defaultBetween relationship, judge zero cold water gas and hot water
Whether device, which is completed, preheats, and when reaching preset temperature, then zero cold water gas heater switches to general mode, and zero cold water is avoided to fire
Gas water heater is constantly in preheating mode, avoids waste electric energy and combustion gas.
Embodiment 3
The present embodiment provides a kind of control methods of zero cold water gas heater for limiting preheating temperature, and flow chart is as schemed
Shown in 5, this method comprises the following steps:
S1, the pre- hot-die for starting zero cold water gas heater ontology 1 by the preheating function key 52 of Operation display module 5
Formula, controller 6 control built-in water pump 2 and operate, and control gas control valve 4 is opened, zero cold water water heater body 1 from general mode into
Enter preheating mode；
S2, controller 6 record preset temperature T when zero cold water gas heater ontology 1 opens preheating modeIt is default, return water
Temperature detecting module 7 detects return water temperature TReturn water, and by return water temperature TReturn waterIt is sent to controller 6；
S3, judge preset temperature TIt is defaultWhether meet: TIt is default> TPreheat max, wherein TPreheat maxMost for preheating temperature threshold range
Big preheating temperature；If it is not, then carrying out S31；If so, carrying out S32:
S31, controller 6 receive the return water temperature T that return water temperature detection module 7 is sentReturn water, and judge return water temperature
TReturn waterWhether meet；TReturn water> TIt is default；If it is not, carrying out S311；If so, carrying out S312；
S311, controller 6 control zero cold water gas heater ontology 1 and continue to preheating mode, and preset temperature TIt is default's
Setting range is preheating temperature threshold range；
S312, controller 6 control zero cold water gas heater ontology 1 and exit preheating mode, while controlling operation display mould
The preset temperature T of block 5It is defaultSetting range revert to preset temperature threshold range from preheating temperature threshold range, into preheating protect
Warm mode；
After S3121, the zero cold water gas heater ontology 1 of control of controller 6 are in preheating insulation mode, controller 6 judges
Return water temperature T under preheating insulation mode stateReturn waterWhether program holding temperature is less than:
If so, controller 6, which controls zero cold water gas heater ontology 1, switches to preheating mode；
If it is not, then Operation display module 5 records preheating insulation time t, and preheating insulation time t is sent to controller 6；
After controller 6 receives preheating insulation time t, judge whether preheating insulation time t exceeds program soaking time: if so, control
Device 6 controls zero cold water gas heater ontology 1 and exits preheating insulation mode, switches to general mode；If it is not, then controller 6 is controlled
It makes zero cold water gas heater ontology 1 and maintains preheating insulation mode.
S32, controller 6 are automatically by preset temperature TIt is defaultIt turns down to target preheating temperature TTarget, repeat S31.
Wherein program soaking time is the time being prestored into controller 6, such as program soaking time in the present embodiment
It can be 20min, can be 30min etc..
In a particular embodiment, leaving water temperature T can also be passed throughWater outletWith preset temperature TIt is defaultDifference, control combustion gas control
The aperture of valve 4, comprising:
Detect the leaving water temperature T that leaving water temperature detection module 3 detects zero cold water gas heater ontology, 1 water outletWater outlet, and
By leaving water temperature TWater outletIt is sent to controller 6；
Controller 6 receives the leaving water temperature T of the transmission of leaving water temperature detection module 3Water outlet, according to leaving water temperature TWater outletWith it is pre-
If temperature TIt is defaultDifference, control gas control valve 4 aperture；
Such as leaving water temperature TWater outletWith preset temperature TIt is defaultDifference it is larger when, controller 6 controls gas control valve 4 and opens
Degree increases, and firepower increases, and improves the heating rate of water in circulation line；As leaving water temperature TWater outletWith preset temperature TIt is defaultDifference
When being worth smaller, the aperture that controller 6 controls gas control valve 4 reduces, and firepower reduces, and reduces the heating speed of water in circulation line
Degree reduces leaving water temperature T with thisWater outletWith preset temperature TIt is defaultDifference, it is ensured that leaving water temperature TWater outletClose to preset temperature TIt is default。
In a particular embodiment, the step of preheating mode of zero cold water gas heater ontology 1 of starting includes:
Start the preheating mode of zero cold water gas heater ontology 1 by Operation display module 5, and zero cold water combustion gas is hot
The information that hydrophone ontology 1 starts preheating mode is sent to the controller 6；
Controller 6 receives the information for the zero cold water gas heater ontology 1 starting preheating mode that Operation display module 5 is sent
Afterwards, controller 6 controls built-in water pump 2 and starts, and control gas control valve 4 is opened, then zero cold water gas heater ontology 1 enters pre-
Heat pattern.
In conjunction with the embodiments 1, illustrate the control method of zero cold water gas heater of limitation preheating temperature, this method packet
Include following steps:
User starts the preheating mode of zero cold water gas heater ontology 1 by preheating function key 52, and zero cold water is fired
The information that gas water heater body 1 starts preheating mode is sent to controller 6；
Controller 6 detects preset temperature TIt is default, receive the zero cold water gas heater ontology 1 that Operation display module 5 is sent and open
The information of dynamic preheating mode, information, zero cold water gas heater ontology 1 of control enter preheating mode, that is, control based on the received
Device 6 controls built-in water pump 2 and starts, and gas control valve 4 is opened；
According to the preset temperature T of detectionIt is default, controller 6 judges preset temperature TIt is defaultWhether meet: TIt is default> TPreheat max, wherein
TPreheatingFor the maximum preheating temperature of preheating temperature threshold range, such as TPreheating=50 DEG C；When zero cold water gas heater ontology 1 is in
When preheating mode, preset temperature TIt is defaultSetting range become smaller, such as preset temperature TIt is defaultSetting range be 35 DEG C~50 DEG C, keep away
Exempt to occur because of preset temperature TIt is defaultProblem that is excessively high, and causing the preheating temperature of water in circulation line excessively high；
If it is not, controller 6 is according to preset temperature TIt is defaultControl loop pipeline water preheating temperature；
If so, controller 6 is first automatically by preset temperature TIt is defaultIt turns down to target preheating temperature TTarget, temperature is preheated further according to target
Spend TTargetControl loop pipeline water preheating temperature, target preheating temperature TTargetFor any temperature value in preheating temperature threshold range；
Wherein, preset temperature T is adjustedIt is defaultThe step of setting range, can be with are as follows:
Zero cold water gas heater ontology 1 is under preheating mode, and return water temperature detection module 7 detects return water temperature TReturn water,
And by return water temperature TReturn waterIt is sent to controller 6；
Controller 6 receives return water temperature TReturn water, and judge return water temperature TReturn waterWhether meet；TReturn water> TIt is default；
If it is not, then controller 6 continues to the preheating mode of zero cold water gas heater ontology 1, i.e. controller 6 controls interior
It sets water pump 2 to remain in operation, gas control valve 4 is opened, and according to TWater outletWith TIt is defaultDifference control gas control valve 4 aperture, control
The heating rate of water in circulation line processed, it is ensured that TWater outletClose to TIt is default；
If so, controller 6, which controls zero cold water gas heater ontology 1, exits preheating mode, into preheating insulation mode,
I.e. controller 6 controls built-in water pump 2 and closes, and gas control valve 4 is closed, while controlling the preset temperature T of Operation display module 5It is default
Setting range revert to preset temperature threshold range from preheating temperature threshold range, wherein preset temperature threshold range is zero cold
When water gas heater ontology 1 is in general mode, the preset temperature range that is pre-stored in controller 6；And target preheating temperature
TTargetIt is also within the scope of preset temperature threshold, such as preset temperature threshold may range from 35 DEG C~60 DEG C in the present embodiment, be
When avoiding preheating mode, preheating temperature is not too high, and preheating temperature threshold range can be 35 DEG C~50 DEG C.
When zero cold water gas heater 1 is in preheating insulation mode, also by when judging preheating insulation in the present embodiment
Between t and program soaking time relationship, judge whether to need for zero cold water gas heater to be switched to general mode, step can be with
Are as follows:
When zero cold water gas heater ontology 1 enters preheating insulation mode, the preheating of 5 start recording of Operation display module is protected
Warm time t, and preheating insulation time t is sent to controller 6, controller 6 receives preheating insulation time t, and judges hot preheating
Whether soaking time t exceeds program soaking time, if so, zero cold water gas heater ontology 1 exits preheating insulation mode, cuts
Change general mode into；If it is not, then continuing to preheating insulation mode.Program soaking time therein is to be prestored into zero cold water combustion gas
The soaking time of water heater body 1.
In conclusion the control method of water preheating temperature can be default by regulating and controlling in limitation circulation line of the invention
Temperature TIt is default, and pass through regulation preset temperature TIt is defaultSetting range, avoid circulation line memory coolant-temperature gage excessively high.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Claims (8)
1. a kind of zero cold water gas heater for limiting preheating temperature, which is characterized in that including zero cold water gas heater ontology
(1), built-in water pump (2), leaving water temperature detection module (3), return water temperature detection module (7), gas control valve (4), operation are aobvious
Show module (5) and controller (6)；
The built-in water pump (2) is arranged on the water-flowing path in the zero cold water gas heater ontology (1), for detecting
The water outlet that the leaving water temperature detection module (3) of coolant-temperature gage is arranged in the zero cold water gas heater ontology (1) is used
It is arranged in the zero cold water gas heater ontology (1) in the return water temperature detection module (7) of detection return water temperature
Water inlet end is warm in the zero cold water combustion gas for controlling the gas control valve (4) setting of on-off and gas flow of combustion gas
It is pre- for set temperature, starting preheating mode, record preheating insulation time and display on admission line in hydrophone ontology (1)
If the Operation display module (5) of temperature is arranged on zero cold water gas heater ontology (1) lateral wall, the operation
Display module (5), built-in water pump (2), leaving water temperature detection module (3), return water temperature detection module (7), gas control valve (4)
It is electrically connected with the controller (6).
2. zero cold water gas heater of limitation preheating temperature as described in claim 1, which is characterized in that the operation display
Module (5) includes the temperature setting key (51) for set temperature, for starting the zero cold water gas heater preheating mode
Preheating function key (52), and the display screen (53) for showing preset temperature；
The temperature setting key (51), the preheating function key (52) and the display screen (53) are electric with the controller (6)
Property connection.
3. zero cold water gas heater of limitation preheating temperature as claimed in claim 2, which is characterized in that the temperature setting
Key (51) includes heating key and cooling key.
4. zero cold water gas heater of limitation preheating temperature as claimed in claim 2, which is characterized in that the leaving water temperature
Detection module (3) is leaving water temperature detection probe；The return water temperature detection module (7) is return water temperature detection probe.
5. a kind of control method for the zero cold water gas heater for limiting preheating temperature, which comprises the steps of:
Start the preheating mode of the zero cold water gas heater ontology (1)；
Detect the preset temperature T of the zero cold water gas heater ontology (1)It is default；
Judge the preset temperature TIt is defaultWhether meet: TIt is default> TPreheat max, wherein the TPreheat maxFor the preheating temperature threshold value model
The maximum preheating temperature enclosed；
If it is not, then the controller (6) is according to the preset temperature TIt is defaultControl loop pipeline water temperature；
If so, the controller (6) is automatically by the preset temperature TIt is defaultIt turns down to target preheating temperature TTarget, further according to described
Target preheating temperature TTargetControl loop pipeline water temperature, the target preheating temperature TTargetFor the preheating temperature threshold range
Interior any temperature value.
6. the control method of zero cold water gas heater of limitation preheating temperature as claimed in claim 5, which is characterized in that adjust
The whole preset temperature TIt is defaultThe step of setting range includes:
The zero cold water gas heater ontology (1) is under preheating mode, detects return water temperature TReturn water；
Judge the return water temperature TReturn waterWhether meet；TReturn water> TIt is default；
If it is not, then controller (6) the control zero cold water gas heater ontology (1) continues to preheating mode, and institute
State preset temperature TIt is defaultSetting range maintain the preheating temperature threshold range；
If so, the controller (6), which controls the zero cold water gas heater ontology (1), exits preheating mode, it is described default
Temperature TIt is defaultSetting range revert to preset temperature threshold range from preheating temperature threshold range, and switch to preheating insulation mould
Formula or general mode.
7. the control method of zero cold water gas heater of limitation preheating temperature as claimed in claim 6, which is characterized in that institute
It states controller (6) to control after the zero cold water gas heater ontology (1) switches to preheating insulation mode, detects return water temperature
TReturn water, and record accumulative preheating insulation time t；
The controller (6) judges the return water temperature TReturn waterWhether program holding temperature is less than:
If so, the controller (6), which controls the zero cold water gas heater ontology (1), switches to preheating mode；
If it is not, then the controller (6) judges whether preheating insulation time t exceeds program soaking time:
If so, the controller (6), which controls the zero cold water gas heater ontology (1), exits preheating insulation mode, switch
At general mode；
If it is not, then the controller (6) controls zero cold water gas heater ontology (1) the maintenance preheating insulation mode.
8. the control method of zero cold water gas heater of limitation preheating temperature as claimed in claim 5, which is characterized in that open
The step of moving the preheating mode of the zero cold water gas heater ontology (1) include:
Start the preheating mode of the zero cold water gas heater ontology (1) by the Operation display module (5), and will be described
The information of zero cold water gas heater ontology (1) starting preheating mode is sent to the controller (6)；
The controller (6) receives zero cold water gas heater ontology (1) the starting preheating that the Operation display module (5) is sent
After the information of mode, controller (6) control built-in water pump (2) starting controls the gas control valve (4) opening,
Then the zero cold water gas heater ontology (1) enters preheating mode.
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| CN201910694789.8A CN110398055A (en) | 2019-07-30 | 2019-07-30 | Zero-cold-water gas water heater capable of limiting preheating temperature and control method thereof |
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| CN201910694789.8A CN110398055A (en) | 2019-07-30 | 2019-07-30 | Zero-cold-water gas water heater capable of limiting preheating temperature and control method thereof |
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| CN110806013A (en) * | 2019-11-08 | 2020-02-18 | 华帝股份有限公司 | Control method of zero-cold-water gas water heater and zero-cold-water gas water heater |
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| CN111322763A (en) * | 2020-02-11 | 2020-06-23 | 华帝股份有限公司 | Double-line zero-cold-water temperature control method and wall-mounted furnace |
| CN111998539A (en) * | 2020-07-24 | 2020-11-27 | 华帝股份有限公司 | Control method for intelligent preheating of zero-cold-water gas water heater |
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| CN112484312A (en) * | 2020-12-03 | 2021-03-12 | 芜湖美的厨卫电器制造有限公司 | Control method and control device for zero-cold-water gas water heater and processor |
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| CN113154498A (en) * | 2021-03-26 | 2021-07-23 | 威能(无锡)供热设备有限公司 | Pump station and hot water system adopting same |
| CN113834218A (en) * | 2021-09-26 | 2021-12-24 | 华帝股份有限公司 | Preheating control method of gas water heater and gas water heater |
| CN113834218B (en) * | 2021-09-26 | 2022-12-06 | 华帝股份有限公司 | Preheating control method of gas water heater and gas water heater |
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