CN112393433A - Preheating and heat-preserving control method for zero-cold-water gas water heater - Google Patents
Preheating and heat-preserving control method for zero-cold-water gas water heater Download PDFInfo
- Publication number
- CN112393433A CN112393433A CN202011075193.9A CN202011075193A CN112393433A CN 112393433 A CN112393433 A CN 112393433A CN 202011075193 A CN202011075193 A CN 202011075193A CN 112393433 A CN112393433 A CN 112393433A
- Authority
- CN
- China
- Prior art keywords
- water
- temperature
- preheating
- water heater
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 187
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005259 measurement Methods 0.000 claims abstract description 4
- 239000000523 sample Substances 0.000 claims description 18
- 238000004321 preservation Methods 0.000 claims description 5
- 238000004904 shortening Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 238000003287 bathing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- 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
Landscapes
- 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)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
Abstract
The invention discloses a preheating and heat-preserving control method of a zero-cold-water gas water heater, which comprises the following steps of: s1, the gas water heater is in a standby mode; s2, controlling the gas water heater to enter a preheating working mode; s3, recording the temperature T of the return water of the pumpOpening and returningAnd according to a preset temperature TPreset ofAnd compensating for the temperature difference delta TCompensationThe sum controls the water outlet temperature TGo out(ii) a S4, judging the actual measurement backwater temperature TGo back toWhether it is higher than the temperature T of the return water of the pumpOpening and returningTemperature rise delta T with return waterRising backIf yes, the preset temperature T is restoredPreset ofControlling the temperature T of the discharged waterGo outAnd if not, judging whether the preheating pump-off condition is met. It compensates the heat loss of the pipeline by increasing the preheating water temperature so as to achieve the purposes of shortening the preheating time and improving the use experience of users.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to a preheating and heat-preserving control method of a zero-cold-water gas water heater, which is suitable for a household hot-water supply gas water heater or a dual-purpose furnace.
Background
In the related art, the zero-cold water gas water heater becomes the industry trend of the gas water heater because the zero-cold water gas water heater can realize that hot water can be used immediately after being started. When the preheating function of the zero-cold-water gas water heater is started, the built-in circulating water pump operates to drive the water stored in the external hot water pipe and the water return pipe to circularly flow and realize preheating.
However, when the zero-cold-water gas water heater is actually used, the stored water in the circulating pipeline has heat loss, the temperature rise of the backwater is slow, and the preheating time is long. And the longer the circulation pipeline is, the greater the heat loss is, the longer the time for the user to wait for hot water is, and the poor use experience of the user is.
Disclosure of Invention
The invention aims to solve at least one of the problems in the prior related art to a certain extent, and therefore, one purpose of the invention is to provide a preheating and heat-preserving control method for a zero-cold-water gas water heater, which can shorten the preheating time and is beneficial to improving the use experience of users.
The above purpose is realized by the following technical scheme:
the preheating and heat-insulating control method of the zero-cold-water gas water heater comprises a water heater body, a water pump, a water outlet temperature probe, a water return temperature probe, a gas control valve and a controller, wherein the water pump is installed on a main water path of the water heater body, the water outlet temperature probe is installed at a water outlet end of the main water path of the water heater body, the water return temperature probe is installed at a water inlet end of the main water path of the water heater body, the gas control valve is installed on a gas supply path of the water heater body, and the water pump, the water outlet temperature probe, the water return temperature probe and the gas control valve are respectively and electrically connected with the controller, and:
s1, the gas water heater is in a standby mode;
s2, controlling the gas water heater to enter a preheating working mode;
s3, recording the temperature T of the return water of the pumpOpening and returningAnd according to a preset temperature TPreset ofAnd compensating for the temperature difference delta TCompensationSum ofControlling the temperature T of the discharged waterGo out；
S4, judging the actual measurement backwater temperature TGo back toWhether it is higher than the temperature T of the return water of the pumpOpening and returningTemperature rise delta T with return waterRising backIf yes, the preset temperature T is restoredPreset ofControlling the temperature T of the discharged waterGo outAnd if not, judging whether the preheating pump-off condition is met.
In some embodiments, the temperature difference Δ T is compensatedCompensationEither as a fixed value or set by a parameter mode of the controller.
In some embodiments, the temperature difference Δ T is compensatedCompensationThe value range of (A) is 0-3 ℃.
In some embodiments, the pre-heat pump-off condition is:
return water temperature TGo back toWhether or not the preset temperature T is reachedPreset ofTemperature difference T from preheatingPre-differenceThe difference between the two;
or, the temperature T of the outlet waterGo outWhether the preheating overtemperature protection value is reached;
or, actually measuring whether the preheating time reaches the longest preheating time.
In some embodiments, if the preheat pump-off condition is reached, then the preheat mode of operation is exited and the process returns to step S1;
if the pre-heat pump-off condition is not met, the process returns to step S4.
Compared with the prior art, the invention at least comprises the following beneficial effects:
1. according to the preheating and heat-preserving control method for the zero-cold-water gas water heater, the preheating water temperature is increased, and the heat loss of a pipeline is compensated, so that the purposes of shortening the preheating time and improving the use experience of a user are achieved.
Drawings
FIG. 1 is a schematic diagram of a zero cold water gas water heater according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a preheating and heat-preserving control method in an embodiment of the invention;
FIG. 3 is a graph showing a change in the preheated water temperature according to an embodiment of the present invention.
Detailed Description
The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.
The first embodiment is as follows: as shown in fig. 1, 2 and 3, the present embodiment provides a preheating and heat-preserving control method for a zero-cold-water gas water heater, wherein the gas water heater includes a water heater body 1, a water pump 2, a water outlet temperature probe 3, a water return temperature probe 4, a gas control valve 5, a controller 6 and an operation display 7, a main water path 10 of the water heater body 1 includes a water inlet pipeline, a water outlet pipeline and a water return pipeline, the water inlet pipeline, the water outlet pipeline and the water return pipeline are sequentially connected to form a circulation pipeline for circulation preheating, the water pump 2 is installed on the main water path 10 of the water heater body 1, the water outlet temperature probe 3 is installed at the water outlet end of the main water path 10 of the water heater body 1 for real-time monitoring of the water outlet temperature, the water return temperature probe 4 is installed at the water inlet end of the main water path 10 of the water heater body 1 for real-time monitoring of the water, a temperature setting key and a preheating function key are arranged on the operation display 7, and the water pump 2, the water outlet temperature probe 3, the backwater temperature probe 4, the gas control valve 5 and the operation display 7 are respectively and electrically connected with the controller 6;
in the present embodiment, the preheating function key of the operation display 7 can immediately turn on the preheating function or set the time to turn on the preheating function.
Further, the temperature setting key of the operation display 7 can set a range of preset temperatures, which in this embodiment is generally: 35-60 ℃.
Furthermore, a return pipeline is arranged at the water using point hot water faucet and connected with a water inlet pipeline of the water heater body 1, and a one-way valve is arranged on the return pipeline to prevent running water from directly flowing to the hot water faucet. After the preheating function is started, the internal water pump 2 is started and the water heater is started to heat and store water, hot water flows into a hot water pipeline from a water outlet of the water heater main body 1 and then flows back to a water inlet of the gas water heater main body 1 through a water return pipeline, and circulating preheating is achieved.
The control method comprises the following steps:
s1, the gas water heater is in a standby mode, the preheating function is started by operating the preheating function key of the display 7, the controller 6 starts the water pump 2 and the gas control valve 5, and the water pump is started to ignite and preheat the water stored in the circulating pipeline;
s2, controlling the gas water heater to enter a preheating working mode;
s3, recording the temperature T of the return water of the pumpOpening and returningAnd according to a preset temperature TPreset ofAnd compensating for the temperature difference delta TCompensationThe sum controls the water outlet temperature TGo outI.e. TGo out＝TPreset of+ΔTCompensationThe preheating water temperature is controlled by adjusting the opening degree of the gas control valve 5, and the temperature difference delta T is compensatedCompensationSet for a fixed value or by a parameter mode of the controller, preferably, the temperature difference Δ T is compensatedCompensationThe value range of (a) is 0-3 ℃, as shown in figure 3, by compensating the temperature difference delta TCompensationThe preheating water temperature is increased, the heat loss of the pipeline is compensated, the temperature rise speed of the stored water is increased, and the preheating time is shortened;
s4, judging the actual measurement backwater temperature TGo back toWhether it is higher than the temperature T of the return water of the pumpOpening and returningTemperature rise delta T with return waterRising backIf yes, the preset temperature T is restoredPreset ofControlling the temperature T of the discharged waterGo outAs shown in FIG. 3, during the preheating process, when the temperature rise of the return water reaches Δ TRising backIn time, the single circulation preheating is just finished, and the return water temperature T is actually measuredGo back toAnd the temperature T of the outlet waterGo outRises synchronously, at which time the preset temperature T is restoredPreset ofControlling the temperature T of the discharged waterGo outCan inhibit preheating overtemperature and ensure bathing hot water experience. The preheating and heat preservation control method of the embodiment is based on the return water temperature rise delta TRising backThe preheating compensation time is determined, so that the preheating compensation device can adapt to different circulating pipelines, the preheating water temperature is more uniform, and the overtemperature and overheating are effectively inhibited.
If not, whether a preheating pump-off condition is reached is judged, and in the embodiment, the preheating pump-off condition is as follows:
return water temperature TGo back toWhether or not the preset temperature T is reachedPreset ofTemperature difference T from preheatingPre-differenceThe difference between the two;
or, the temperature T of the outlet waterGo outWhether the preheating overtemperature protection value is reached;
or, actually measuring whether the preheating time reaches the longest preheating time.
If the preheating pump-off condition is met, the controller 6 closes the water pump 2 and the gas control valve 5, exits the preheating operation mode, returns to step S1, and returns to the standby mode;
if the pre-heat pump-off condition is not met, the process returns to step S4.
Compared with the prior art, the preheating and heat-preserving control method provided by the embodiment at least has the following beneficial effects:
1. the temperature control is compensated in the preheating process, the heat loss of a pipeline is compensated, the temperature rising speed of stored water is accelerated, and the waiting time of hot water is shortened.
2. The preheating compensation time is determined according to the temperature rise of the return water, the requirements of different circulation pipelines are met, the uniformity of the preheated water temperature is improved, the preheated water temperature can be prevented from being excessively hot or excessively cold, and the product intelligence is embodied.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (5)
1. A preheating and heat-preserving control method for a zero-cold-water gas water heater comprises a water heater body (1), a water pump (2), an outlet water temperature probe (3) and a return water temperature probe (4), the water heater comprises a gas control valve (5) and a controller (6), a water pump (2) is installed on a main water path (10) of a water heater body (1), a water outlet temperature probe (3) is installed at a water outlet end of the main water path (10) of the water heater body (1), a water return temperature probe (4) is installed at a water inlet end of the main water path (10) of the water heater body (1), the gas control valve (5) is installed on a gas supply path of the water heater body (1), and the water pump (2), the water outlet temperature probe (3), the water return temperature probe (4) and the gas control valve (5) are respectively electrically connected with the controller (6), and the water heater is characterized in that the control method comprises the following steps:
s1, the gas water heater is in a standby mode;
s2, controlling the gas water heater to enter a preheating working mode;
s3, recording the temperature T of the return water of the pumpOpening and returningAnd according to a preset temperature TPreset ofAnd compensating for the temperature difference delta TCompensationThe sum controls the water outlet temperature TGo out；
S4, judging the actual measurement backwater temperature TGo back toWhether it is higher than the temperature T of the return water of the pumpOpening and returningTemperature rise delta T with return waterRising backIf yes, the preset temperature T is restoredPreset ofControlling the temperature T of the discharged waterGo outAnd if not, judging whether the preheating pump-off condition is met.
2. The preheating and heat preservation control method of the zero-cold-water gas water heater as claimed in claim 1, wherein the compensation temperature difference Δ TCompensationEither as a fixed value or set by a parameter mode of the controller.
3. The preheating and heat preservation control method of the zero-cold-water gas water heater as claimed in claim 2, wherein the compensation temperature difference Δ TCompensationThe value range of (A) is 0-3 ℃.
4. The preheating and heat preservation control method of the zero-cold-water gas water heater as claimed in claim 1, 2 or 3, wherein the preheating pump-off condition is as follows:
return water temperature TGo back toWhether or not the preset temperature T is reachedPreset ofTemperature difference T from preheatingPre-differenceThe difference between the two;
or, the temperature T of the outlet waterGo outWhether the preheating overtemperature protection value is reached;
or, actually measuring whether the preheating time reaches the longest preheating time.
5. The preheating and heat preservation control method of the zero-cold-water gas water heater as claimed in claim 4, wherein if the preheating pump-off condition is reached, the preheating operation mode is exited, and the step S1 is returned to; if the pre-heat pump-off condition is not met, the process returns to step S4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011075193.9A CN112393433B (en) | 2020-10-09 | 2020-10-09 | Preheating and heat-preserving control method for zero-cold-water gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011075193.9A CN112393433B (en) | 2020-10-09 | 2020-10-09 | Preheating and heat-preserving control method for zero-cold-water gas water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112393433A true CN112393433A (en) | 2021-02-23 |
| CN112393433B CN112393433B (en) | 2022-05-27 |
Family
ID=74595832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011075193.9A Active CN112393433B (en) | 2020-10-09 | 2020-10-09 | Preheating and heat-preserving control method for zero-cold-water gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112393433B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113945003A (en) * | 2021-09-15 | 2022-01-18 | 威能(无锡)供热设备有限公司 | Gas water heating equipment, preheating control method thereof, water heating system and readable storage medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006064269A (en) * | 2004-08-26 | 2006-03-09 | Matsushita Electric Ind Co Ltd | Hot water supply apparatus |
| CN203629119U (en) * | 2013-11-28 | 2014-06-04 | 杭州东城电子有限公司 | Green energy-saving cold-hot combined box |
| CN104596117A (en) * | 2015-01-21 | 2015-05-06 | 芜湖美的厨卫电器制造有限公司 | Low-heat value fuel gas combustion chamber of gas turbine |
| CN104633945A (en) * | 2015-01-30 | 2015-05-20 | 芜湖美的厨卫电器制造有限公司 | Method and system for controlling gas water heater and gas water heater |
| CN109654665A (en) * | 2018-12-14 | 2019-04-19 | 广东美的暖通设备有限公司 | The control method and device and air conditioner of air conditioner |
| CN110398055A (en) * | 2019-07-30 | 2019-11-01 | 华帝股份有限公司 | Zero-cold-water gas water heater capable of limiting preheating temperature and control method thereof |
| CN210320690U (en) * | 2019-05-11 | 2020-04-14 | 广州帝胜智能科技有限公司 | Self-adaptive temperature compensation zero-cooling water system |
| CN111998540A (en) * | 2020-07-29 | 2020-11-27 | 华帝股份有限公司 | Control method of gas water heater and gas water heater |
-
2020
- 2020-10-09 CN CN202011075193.9A patent/CN112393433B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006064269A (en) * | 2004-08-26 | 2006-03-09 | Matsushita Electric Ind Co Ltd | Hot water supply apparatus |
| CN203629119U (en) * | 2013-11-28 | 2014-06-04 | 杭州东城电子有限公司 | Green energy-saving cold-hot combined box |
| CN104596117A (en) * | 2015-01-21 | 2015-05-06 | 芜湖美的厨卫电器制造有限公司 | Low-heat value fuel gas combustion chamber of gas turbine |
| CN104633945A (en) * | 2015-01-30 | 2015-05-20 | 芜湖美的厨卫电器制造有限公司 | Method and system for controlling gas water heater and gas water heater |
| CN109654665A (en) * | 2018-12-14 | 2019-04-19 | 广东美的暖通设备有限公司 | The control method and device and air conditioner of air conditioner |
| CN210320690U (en) * | 2019-05-11 | 2020-04-14 | 广州帝胜智能科技有限公司 | Self-adaptive temperature compensation zero-cooling water system |
| CN110398055A (en) * | 2019-07-30 | 2019-11-01 | 华帝股份有限公司 | Zero-cold-water gas water heater capable of limiting preheating temperature and control method thereof |
| CN111998540A (en) * | 2020-07-29 | 2020-11-27 | 华帝股份有限公司 | Control method of gas water heater and gas water heater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113945003A (en) * | 2021-09-15 | 2022-01-18 | 威能(无锡)供热设备有限公司 | Gas water heating equipment, preheating control method thereof, water heating system and readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112393433B (en) | 2022-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109405268B (en) | Gas water heater and control method | |
| CN110017614B (en) | Control device and control method for zero-cold-water heater | |
| CN110017615B (en) | Zero-cold-water control device with preheating overtemperature protection and control method | |
| CN110398054B (en) | Self-adaptive temperature-control zero-cooling water gas water heater and control method thereof | |
| CN110017612B (en) | Constant temperature control method of gas water heater | |
| CN110207393A (en) | Constant-temperature water outlet control method and system of gas water heater and gas water heater | |
| CN111503899B (en) | Rapid heating temperature control method of gas heat exchange equipment | |
| CN110220313B (en) | Gas water heater control method and gas water heater | |
| CA2765377A1 (en) | Method for controlling hot water temperature through operation of a circulation pump | |
| CN109237799B (en) | Control method of gas water heater | |
| CN112113346A (en) | Preheating and heat-preserving control method for zero-cold-water gas water heater | |
| CN111795505B (en) | Preheating control method for gas water heater | |
| CN112393433B (en) | Preheating and heat-preserving control method for zero-cold-water gas water heater | |
| CN112594936A (en) | Preheating control method for instant heating body | |
| CN111561786A (en) | Preheating control method of zero-cold-water gas water heater | |
| CN111854175B (en) | Gas water heater and control method of circulating water pump thereof | |
| CN111664591A (en) | Water heater constant temperature system and control method thereof | |
| JP6037462B2 (en) | Heating system | |
| CN201141693Y (en) | Quick water storage type electric water-heater | |
| CN111928489A (en) | Self-adaptive method for temperature rise of gas water heater in circulating start-stop mode | |
| CN113587450A (en) | Energy-saving zero-cold-water gas water heating system and control method | |
| CN113154690A (en) | Control method of water heater and water heater | |
| CN110953727A (en) | Constant temperature control method of gas water heater | |
| CN102434911A (en) | Control method and device of hot-water circulation | |
| CN115183470B (en) | Control method for rapid preheating of gas water heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |