CN115900078A - Constant-temperature water outlet device, wall-mounted furnace and constant-temperature water outlet method - Google Patents
Constant-temperature water outlet device, wall-mounted furnace and constant-temperature water outlet method Download PDFInfo
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Abstract
The invention discloses a constant-temperature water outlet device, a wall-mounted furnace and a constant-temperature water outlet method. Meanwhile, due to the fact that the constant temperature of the discharged water is achieved, the technical scheme provided by the invention also solves the problems that in the prior art, after the temperature of the discharged water of the bathroom is over-high, the wall-mounted furnace is automatically stopped, then the bathroom water is cooled, and the bathroom water is suddenly cooled and suddenly heated, so that the user experience is poor.
Description
Technical Field
The invention relates to the technical field of intelligent control, in particular to a constant-temperature water outlet device, a wall-mounted boiler and a constant-temperature water outlet method.
Background
The wall-mounted boiler is a gas wall-mounted boiler, is called as a gas wall-mounted heating boiler for short, is a water heater taking natural gas as energy, and has various safety protection measures such as anti-freezing protection, anti-dry heating protection, accidental flameout protection, over-temperature protection, water pump anti-blocking protection and the like.
The wall-mounted stove has a powerful household central heating function, comfortable temperature can be set at will in each room according to requirements, and large-flow constant-temperature sanitary hot water can be provided for household bathing and kitchen places. Because the hanging stove is the equipment that is mainly used for the heating, power is great. The existing wall-mounted furnace is generally dual-purpose for heating and bathroom, so that when the bathroom function is used, the power of the wall-mounted furnace is still higher than the power meeting the user requirements when the lowest power of the wall-mounted furnace is used, and the bathroom water is over-heated. After the bath water is over-heated, the wall-hanging furnace is automatically stopped, and then the bath water becomes cool. Bathroom water is suddenly cold and suddenly hot, gives the user experience poor, and has the scald risk.
Disclosure of Invention
The invention aims to overcome the technical defects and provides a constant-temperature water outlet device, a wall-mounted boiler and a constant-temperature water outlet method so as to solve the technical problem that the wall-mounted boiler is excessively hot when running at the lowest power in the related art.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
according to a first aspect of the invention, a constant temperature water outlet device is provided, which comprises a plate heat exchanger, and further comprises:
the water tank is communicated with a bathroom water outlet pipe of the plate type heat exchanger;
the first temperature sensing bulb is arranged in the bathroom water outlet pipe and used for detecting the water outlet temperature of the plate heat exchanger;
the second temperature sensing bulb is arranged in the water tank and used for detecting the water storage temperature in the water tank;
and the controller is used for controlling the outlet water of the plate heat exchanger to be mixed with the water in the water tank according to the stored water temperature and the outlet water temperature when the outlet water temperature is higher than the water temperature set by the user, so that the constant temperature of the water supplied to the user is the water temperature.
Optionally, the constant temperature water outlet device further includes:
and the electric three-way valve is electrically connected with the controller and is sleeved on the bathroom water outlet pipe, a first water outlet of the electric three-way valve is communicated with the water inlet of the water tank, a second water outlet of the electric three-way valve is communicated with a bathroom water supply pipe, and the bathroom water supply pipe is communicated with the water outlet of the water tank and used for supplying water for users.
Optionally, the constant temperature water outlet device further includes:
the flow sensor is electrically connected with the controller, is arranged in a bathroom water inlet pipe of the plate heat exchanger and is used for detecting the water inlet flow of the plate heat exchanger; and/or the presence of a gas in the atmosphere,
and the third temperature sensing bulb is electrically connected with the controller, is arranged in a bathroom water inlet pipe of the plate heat exchanger and is used for detecting the water inlet temperature of the plate heat exchanger.
Optionally, the constant temperature water outlet device further includes:
and the liquid level detection needle is electrically connected with the controller, is arranged in the water tank and is used for detecting the liquid level height in the water tank.
Optionally, the constant temperature water outlet apparatus further includes:
a heating water return pipe of the main heat exchanger is communicated with a heating water return pipe of the plate heat exchanger, and a water pump is arranged in the heating water return pipe of the main heat exchanger; the heating water outlet pipe is communicated with the heating water outlet pipe of the plate heat exchanger through a heating three-way valve.
According to a second aspect of the present invention, there is provided a wall hanging stove comprising:
the constant-temperature water outlet device.
According to a third aspect of the present invention, there is provided a constant temperature water outlet method applied to a constant temperature water outlet device, comprising:
acquiring the water temperature set by a user, the water outlet temperature of the plate heat exchanger and the water storage temperature in the water tank;
when the water outlet temperature is higher than the water use temperature set by a user, controlling the water outlet of the plate heat exchanger to be mixed with the water in the water tank according to the stored water temperature and the water outlet temperature so as to enable the constant temperature of the water supplied to the user to be the water use temperature; the water tank is communicated with a bathroom water outlet pipe of the plate heat exchanger.
Optionally, the controlling of the mixing of the outlet water of the plate heat exchanger and the water in the water tank to make the constant temperature of the water supplied to the user be the water temperature specifically includes:
detecting whether the constant-temperature water outlet device burns at the minimum power;
when the constant-temperature water outlet device is combusted at the minimum power, the on-off direction and the opening size of an electric three-way valve are controlled according to the stored water temperature and the water outlet temperature, and then the water outlet of the plate heat exchanger is controlled to be mixed with the water in the water tank, so that the constant temperature of the water supplied to a user is the water temperature;
the electric three-way valve is sleeved in the bathroom water outlet pipe, a first water outlet of the electric three-way valve is communicated with a water inlet of the water tank, a second water outlet of the electric three-way valve is communicated with a bathroom water supply pipe, and the bathroom water supply pipe is communicated with a water outlet of the water tank and used for supplying water for users.
Optionally, the detecting whether the constant temperature water outlet device burns with minimum power includes:
after the constant-temperature water outlet device is ignited successfully, combustion is carried out according to the minimum power by default; alternatively, the first and second liquid crystal display panels may be,
detecting the water inlet flow of the plate heat exchanger; if the inflow water flow meets the minimum power combustion condition, controlling the constant-temperature water outlet device to combust at the minimum power; alternatively, the first and second electrodes may be,
detecting the water inlet temperature of the plate heat exchanger; calculating the difference between the water use temperature set by the user and the water inlet temperature, and recording the difference as a first difference; and if the first difference value meets the minimum power combustion condition, controlling the constant-temperature water outlet device to combust at the minimum power.
Optionally, when constant temperature water outlet device burns with minimum power, according to water storage temperature and leaving water temperature, the break-make direction and the opening size of control electronic three-way valve include:
when the constant-temperature water outlet device is combusted at the minimum power and the water outlet temperature is equal to the water temperature set by a user, the electric three-way valve is controlled to only communicate the bathroom water outlet pipe of the plate heat exchanger with a bathroom water supply pipe and control the opening of the electric three-way valve to be the maximum.
Optionally, when constant temperature water outlet device burns with minimum power, according to water storage temperature and leaving water temperature, control electronic three-way valve's break-make direction and open size, include:
when the constant-temperature water outlet device is combusted at the minimum power, the water outlet temperature is higher than the water use temperature set by a user, and the water use temperature set by the user is higher than the water storage temperature, the electric three-way valve is controlled to only communicate the bathroom water outlet pipe with the water inlet of the water tank;
calculating the difference between the water outlet temperature and the water storage temperature, and recording the difference as a second difference;
controlling the opening of the electric three-way valve according to the mapping relation among the second difference, the first difference and the opening of the electric three-way valve to the water tank so as to enable the water supply temperature of the bathroom water supply pipe to be equal to the water use temperature set by a user; the first difference is the difference between the water temperature set by a user and the water inlet temperature of the plate heat exchanger.
Optionally, when constant temperature water installation is when burning with the minimums power, according to water storage temperature and leaving water temperature, the on-off direction and the opening size of control electronic three-way valve include:
when the constant-temperature water outlet device is combusted at the minimum power, the water outlet temperature is higher than the water use temperature set by a user, and the water storage temperature is higher than the water use temperature set by the user, the plate heat exchanger is controlled to stop combusting;
detecting the current water outlet temperature of the plate heat exchanger, and if the current water outlet temperature is less than the water use temperature set by a user but greater than the water storage temperature, calculating the difference between the current water outlet temperature and the water storage temperature and recording the difference as a third difference;
controlling the opening of the electric three-way valve according to the mapping relation among the third difference, the first difference and the opening of the electric three-way valve to the water tank so as to enable the water supply temperature of the bathroom water supply pipe to be equal to the water supply temperature set by a user; the first difference is the difference between the water temperature set by a user and the water inlet temperature of the plate heat exchanger.
Optionally, when constant temperature water outlet device burns with minimum power, according to water storage temperature and leaving water temperature, control electronic three-way valve's break-make direction and open size, include:
when the constant-temperature water outlet device is combusted at the minimum power, the water outlet temperature is higher than the water use temperature set by a user, and the stored water temperature is equal to the water use temperature set by the user, the plate heat exchanger is controlled to stop combusting;
and detecting the current water outlet temperature of the plate heat exchanger, and if the current water outlet temperature is equal to the water temperature set by a user, controlling the opening of the electric three-way valve to the water tank to be the maximum so as to enable the water supply temperature of the bathroom water supply pipe to be equal to the water temperature set by the user.
Optionally, the method further includes:
and if the current water inlet flow of the plate heat exchanger is detected to be smaller than the lowest water flow corresponding to the minimum power combustion, and the liquid level height in the water tank is smaller than or equal to a first threshold value, controlling the plate heat exchanger to stop combustion.
Optionally, the method further includes:
if the current water inlet flow of the plate heat exchanger is detected to be smaller than the corresponding lowest water flow when the minimum power is combusted, and the liquid level height in the water tank is equal to a second threshold value, controlling the opening degree of the electric three-way valve to the water tank to be half, wherein the second threshold value is larger than the first threshold value;
and when the liquid level height in the water tank reaches a third threshold value, controlling the plate heat exchanger to stop burning, and controlling the opening size of the electric three-way valve to the water tank according to the first difference value, wherein the third threshold value is larger than the second threshold value.
According to the constant-temperature water outlet device, the wall-mounted furnace and the constant-temperature water outlet method, the water tank is communicated with the bathroom water outlet pipe of the plate type heat exchanger, so that when the water outlet temperature of the plate type heat exchanger is higher, the water outlet temperature is mixed with water in the water tank, the constant temperature of water supplied to a user is the water temperature set by the user, and the technical problem that when the whole machine operates at the lowest power in the prior art, the outlet water is too hot is solved. Meanwhile, due to the fact that the constant temperature of the discharged water is achieved, the technical scheme provided by the invention also solves the problems that in the prior art, after the temperature of the discharged water of the bathroom is over-high, the wall-mounted furnace is automatically stopped, then the bathroom water is cooled, and the bathroom water is suddenly cooled and suddenly heated, so that the user experience is poor.
Drawings
Fig. 1 is a schematic structural diagram of a constant-temperature water outlet device provided by an embodiment of the invention;
FIG. 2 is a flow chart of a constant temperature water discharging method according to an embodiment of the present invention;
fig. 3 is a flow chart of another constant-temperature water outlet method provided by the embodiment of the invention.
Detailed Description
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.
As described in the background art, since the wall-hanging stove is mainly used for heating, the power is large. The existing wall-mounted furnace is generally used for heating and bathroom, so that when the bathroom function is used, the power of the wall-mounted furnace is still higher than the required power when the lowest power is used, and the bathroom water is excessively hot; after the bath water is over-heated, the wall-hanging furnace is automatically stopped, and then the bath water becomes cool. Bathroom water is suddenly cold and suddenly hot, gives the user experience poor, and has the scald risk.
In order to effectively solve the problems in the related art, the invention provides a constant-temperature water outlet device, a wall-mounted boiler and a constant-temperature water outlet method, which are specifically described below.
According to the embodiment of the invention, the constant-temperature water outlet device comprises a plate type heat exchanger. Referring to fig. 1, the apparatus may further include:
the water tank 6 is communicated with a bathroom water outlet pipe M of the plate type heat exchanger 2;
the first temperature sensing bulb 3 is arranged in the bathroom water outlet pipe M and used for detecting the water outlet temperature of the plate heat exchanger 2;
the second temperature sensing bulb 7 is arranged in the water tank 6 and used for detecting the water storage temperature in the water tank 6;
and the controller is used for controlling the mixing of the outlet water of the plate heat exchanger 2 and the water in the water tank 6 according to the storage water temperature and the outlet water temperature when the outlet water temperature is higher than the water temperature set by the user, so that the constant temperature of the water supplied to the user is the water temperature.
It should be noted that the technical scheme provided by the embodiment is suitable for the wall-mounted furnace with the functions of heating and bathroom water outlet. The technical scheme that this embodiment provided is through a water tank 6 of intercommunication on plate heat exchanger 2's bathroom outlet pipe M for when plate heat exchanger 2's play water temperature is higher, through mixing with the water in the water tank 6, make the water constant temperature who supplies with the user do the water temperature has solved prior art when the minimum power operation of complete machine, goes out the water and has crossed the technical problem who scalds. Simultaneously, owing to realized going out water constant temperature, the technical scheme that this embodiment provided has still solved among the prior art bathroom and has gone out the water overtemperature after, and the hanging stove automatic shutdown, then the bathroom water becomes cold again, and bathroom water is suddenly cold and suddenly hot, gives the poor problem of user experience.
It should be noted that the controller is one or a combination of more of the following:
the system comprises a singlechip, an ARM processor, an FPGA controller, a PLC controller, a DSP processor and the like.
In specific practice, the constant temperature water outlet device further comprises:
and the electric three-way valve 4 is electrically connected with the controller and is sleeved on the bathroom water outlet pipe M, a first water outlet of the electric three-way valve is communicated with a water inlet of the water tank 6, a second water outlet of the electric three-way valve is communicated with a bathroom water supply pipe N, and the bathroom water supply pipe N is communicated with a water outlet of the water tank 6 and is used for supplying water for users.
In this case, the controller controls the outlet water of the plate heat exchanger 2 to be mixed with the water in the water tank 6, so as to keep the water supplied to the user at a constant temperature, specifically:
detecting whether the constant-temperature water outlet device burns at the minimum power;
when the constant-temperature water outlet device is combusted at the minimum power, the on-off direction and the opening size of the electric three-way valve 4 are controlled according to the stored water temperature and the water outlet temperature, and then the water outlet of the plate heat exchanger 2 is controlled to be mixed with the water in the water tank 6, so that the water supplied to a user is kept at a constant temperature.
It can be understood that, add electronic three-way valve 4 after, the technical scheme that this embodiment provided can realize the accurate control to plate heat exchanger 2's play water direction and water yield size, realizes plate heat exchanger 2's play water and the water storage flash mixed in the water tank 6, reaches user's water temperature as early as possible.
In specific practice, the constant temperature water outlet device further comprises:
the flow sensor 8 is electrically connected with the controller, is arranged in a bathroom water inlet pipe of the plate heat exchanger 2, and is used for detecting the water inlet flow of the plate heat exchanger 2; and/or the presence of a gas in the atmosphere,
and the third temperature sensing bulb (not shown in the attached drawing) is electrically connected with the controller, is arranged in the bathroom water inlet pipe of the plate heat exchanger 2 and is used for detecting the water inlet temperature of the plate heat exchanger 2.
It should be noted that, after the ignition is completed, the constant-temperature water outlet device provided by the embodiment is used for burning according to the minimum power by default; alternatively, the first and second electrodes may be,
detecting the water inlet flow of the plate heat exchanger 2; if the inflow water flow meets the minimum power combustion condition, controlling the constant-temperature water outlet device to combust at the minimum power; alternatively, the first and second electrodes may be,
detecting the water inlet temperature of the plate heat exchanger 2; calculating the difference between the water use temperature set by the user and the water inlet temperature, and recording the difference as a first difference; and if the first difference value meets the minimum power combustion condition, controlling the constant-temperature water outlet device to combust at the minimum power.
In specific practice, the constant temperature water outlet device further comprises:
a liquid level detection pin (not shown in the drawings, which may be installed near the second bulb 7), electrically connected to the controller, is provided in the water tank 6, and detects a liquid level in the water tank 6.
It should be noted that the liquid level detection pin is arranged to control the plate heat exchanger 2 to stop burning when the flow sensor 8 detects that the current inflow flow of the plate heat exchanger 2 is smaller than the minimum water flow corresponding to the minimum power burning, and the liquid level detection pin detects that the liquid level height in the water tank 6 is smaller than or equal to a threshold value, so as to prevent the plate heat exchanger 2 from being burned without water, and prolong the service life of the plate heat exchanger 2.
In specific practice, the constant temperature water outlet device further comprises:
a heating water return pipe of the main heat exchanger 1 is communicated with a heating water return pipe of the plate heat exchanger, and a water pump 9 is arranged in the heating water return pipe of the main heat exchanger 1; and a heating water outlet pipe of the heating water pipe is communicated with a heating water outlet pipe of the plate type heat exchanger 2 through a heating three-way valve 5.
It should be noted that the constant temperature water outlet device provided in this embodiment is only an example, and when the device has a bathroom water supply function and a heating function, the constant temperature water outlet device provided in this embodiment improves a bathroom water outlet portion, and the function and structure of the heating portion are not changed. Referring to fig. 1, a port a is a heating water outlet, a port B is a bathroom water outlet, a port C is a bathroom water inlet, and a port D is a heating water return port.
When only need heating, open water pump 9 and heating three-way valve 5, the heating return water is gone into main heat exchanger 1 from D mouth through water pump 9 pump and is carried out the heat exchange, and the heating return water after the heat exchange flows out by heating delivery port A mouth through heating three-way valve 5, no longer flows into plate heat exchanger 2. When only needing bathroom to go out water, water pump 9 keeps the on-state, and heating three-way valve 5 switches to the direction of flow direction plate heat exchanger 2, no longer flows out from heating delivery port A, and bathroom is intake and is flowed into plate heat exchanger 2 from bathroom water inlet C mouth and heats, then flows out through bathroom delivery port B mouth and supplies the user to use. When heating and bathroom water outlet are needed at the same time, the working process is the superposition of the working process when only heating and only bathroom water outlet are needed, and the description is omitted here.
According to another embodiment of the invention, a wall-mounted boiler is provided, which comprises the constant-temperature water outlet device.
It can be understood that, according to the technical solution provided by the present embodiment, since the constant temperature water outlet device includes the above-mentioned constant temperature water outlet device, and the above-mentioned constant temperature water outlet device is communicated with the water tank 6 through the bathroom water outlet pipe M of the plate heat exchanger 2, when the outlet water temperature of the plate heat exchanger 2 is relatively high, the outlet water is mixed with water in the water tank 6, so that the constant temperature of the water supplied to the user is the water temperature set by the user. Simultaneously, owing to realized going out water constant temperature, the technical scheme that this embodiment provided has still solved among the prior art bathroom and has gone out the water overtemperature after, and the hanging stove automatic shutdown, then the bathroom water becomes cold again, and bathroom water is suddenly cold and suddenly hot, gives the poor problem of user experience.
According to another embodiment of the invention, a constant-temperature water outlet method is provided, which is applied to the constant-temperature water outlet device. Referring to fig. 2, the method may include:
s11, acquiring a water use temperature set by a user, an outlet water temperature of the plate heat exchanger and a water storage temperature in the water tank;
s12, when the water outlet temperature is higher than the water use temperature set by a user, controlling the water outlet of the plate heat exchanger to be mixed with the water in the water tank according to the stored water temperature and the water outlet temperature so as to enable the constant temperature of the water supplied to the user to be the water use temperature; the water tank is communicated with a bathroom water outlet pipe of the plate heat exchanger.
It should be noted that the technical solution provided in this embodiment is applied to the controller of the constant temperature water outlet device, and the constant temperature water outlet device is suitable for a wall-mounted furnace.
In a specific practice, the step S11 of "acquiring the water temperature set by the user" may be acquired through a touch screen, a display, a key module or a terminal device (e.g., a mobile phone, a remote controller, etc.) connected to the controller. In the step S11, "the outlet water temperature of the plate heat exchanger" may be obtained through a first thermal bulb disposed in a bathroom outlet pipe of the plate heat exchanger. The "temperature of the stored water in the water tank" in step S11 may be acquired by a second bulb provided in the water tank.
In step S12, "controlling the outlet water of the plate heat exchanger to mix with the water in the water tank to keep the temperature of the water supplied to the user constant", specifically:
detecting whether the constant-temperature water outlet device burns at the minimum power;
when the constant-temperature water outlet device is combusted at the minimum power, the on-off direction and the opening size of the electric three-way valve are controlled according to the stored water temperature and the water outlet temperature, and then the water outlet of the plate heat exchanger is controlled to be mixed with the water in the water tank, so that the water supplied to a user is kept at the constant temperature;
the electric three-way valve is sleeved on the bathroom water outlet pipe, a first water outlet of the electric three-way valve is communicated with a water inlet of the water tank, a second water outlet of the electric three-way valve is communicated with a bathroom water supply pipe, and the bathroom water supply pipe is communicated with a water outlet of the water tank and used for supplying water for users.
It can be understood that the setting of electronic three-way valve can make plate heat exchanger's play water only flow into the water tank, perhaps, only flows for the user to use through bathroom water supply pipe, and then controls plate heat exchanger's play water direction and play water size.
In a specific practice, the detecting whether the constant temperature water outlet device is burning with minimum power comprises:
after the constant-temperature water outlet device is ignited successfully, burning is carried out according to the minimum power by default; alternatively, the first and second electrodes may be,
detecting the water inlet flow q1 of the plate heat exchanger; if the water inlet flow q1 meets the minimum power combustion condition (q 1 is more than or equal to q), controlling the constant-temperature water outlet device to burn at the minimum power (for example, in a heating mode, the flow sensor 8 detects the water flow q, the heating three-way valve 5 is switched to a bathroom mode, and the whole machine burns at the minimum power); alternatively, the first and second liquid crystal display panels may be,
detecting the water inlet temperature of the plate heat exchanger; calculating the difference between the water use temperature T set by a user and the water inlet temperature, and recording the difference as a first difference delta T; and if the first difference value delta T meets the minimum power combustion condition, controlling the constant-temperature water outlet device to combust at the minimum power.
In concrete practice, when the constant temperature water outlet device burns with minimum power, according to water storage temperature and leaving water temperature, control electronic three-way valve's break-make direction and open size, include:
the first control strategy is as follows:
when the constant-temperature water outlet device is combusted at the minimum power, the current water inlet flow q1 of the plate heat exchanger is greater than or equal to the minimum water flow q corresponding to the minimum power combustion, and the water outlet temperature T 'is equal to the water temperature T set by a user (i.e. q1 is greater than or equal to q, T = T'), controlling the electric three-way valve to only communicate the bathroom water outlet pipe of the plate heat exchanger with a bathroom water supply pipe, and controlling the opening of the electric three-way valve to be the maximum (bathroom water directly flows out from the port B in fig. 1).
The second control strategy is as follows:
when the constant-temperature water outlet device is combusted at the minimum power, the current water inlet flow q1 of the plate heat exchanger is greater than or equal to the minimum water flow q corresponding to the minimum power combustion, the water outlet temperature T 'is greater than the water use temperature T set by a user, and the water use temperature T set by the user is greater than the water storage temperature T (namely q1 is greater than or equal to q, T' > T is greater than T), controlling the electric three-way valve to only communicate the bathroom water outlet pipe with the water inlet of the water tank;
calculating the difference between the water outlet temperature T' and the water storage temperature T, and recording as a second difference delta T;
and controlling the opening of the electric three-way valve according to the mapping relation among the second difference value delta T, the first difference value delta T and the opening D of the electric three-way valve to the water tank so as to enable the water supply temperature of the bathroom water supply pipe to be equal to the water temperature set by a user, namely T + T' = T.
A third control strategy:
when the constant-temperature water outlet device is combusted at the minimum power, the current water inlet flow q1 of the plate heat exchanger is greater than or equal to the minimum water flow q corresponding to the minimum power combustion, the water outlet temperature T 'is greater than the water use temperature T set by a user, and the water storage temperature T is greater than the water use temperature T set by the user (namely q1 is greater than or equal to q, T' > T, and T > T), controlling the plate heat exchanger to stop combusting;
detecting the current water outlet temperature T of the plate heat exchanger, and if the current water outlet temperature T ' is less than the water use temperature T set by a user but greater than the water storage temperature T, calculating the difference between the current water outlet temperature T ' and the water storage temperature T, and recording the difference as a third difference delta T ';
and controlling the opening size of the electric three-way valve according to the mapping relation among the third difference value delta T ', the first difference value delta T and the opening D of the electric three-way valve to the water tank so as to enable the water supply temperature of the bathroom water supply pipe to be equal to the water temperature set by a user, namely T + T' = T.
The fourth control strategy is as follows:
when the constant-temperature water outlet device is combusted at the minimum power, the water outlet temperature T 'is greater than the water use temperature T set by a user, and the water storage temperature T is equal to the water use temperature T set by the user (namely T' > T, T = T), controlling the plate heat exchanger to stop combusting;
and detecting the current water outlet temperature of the plate heat exchanger, and if the current water outlet temperature T' is equal to the water use temperature T set by the user, controlling the opening of the electric three-way valve to the water tank to be the maximum (namely, all the water flowing out of the plate heat exchanger passes through the water tank and then flows out of the port B), so that the water supply temperature of the bathroom water supply pipe is equal to the water use temperature set by the user.
A fifth control strategy:
if the current constant-temperature water outlet device is burnt at the minimum power, but the current water inlet flow q1 of the plate heat exchanger is detected to be smaller than the minimum water flow q corresponding to the minimum power burning (namely q1 <, the minimum water flow q is smaller than the minimum water flow q)
q), and when the water outlet temperature T 'is greater than the water use temperature T set by a user and the water use temperature T set by the user is greater than the water storage temperature T (namely T' > T > T), controlling the electric three-way valve to only communicate the bathroom water outlet pipe with the water inlet of the water tank; calculating the difference between the water outlet temperature T' and the water storage temperature T, and recording the difference as a second difference delta T;
and controlling the opening size of the electric three-way valve according to the mapping relation among the second difference value delta T, the first difference value delta T and the opening D of the electric three-way valve to the water tank so as to enable the water supply temperature of the bathroom water supply pipe to be equal to the water temperature set by a user, namely T + T' = T.
When the liquid level height in the water tank is smaller than or equal to a first threshold value (the first threshold value is set according to user requirements or set according to historical experience values and experimental data), the plate heat exchanger is controlled to stop burning (namely, the liquid level detection needle cannot detect the water level, and the constant-temperature water outlet device stops burning).
A sixth control strategy:
if the current constant-temperature water outlet device is combusted at the minimum power, but the current water inlet flow q1 of the plate heat exchanger is detected to be smaller than the corresponding minimum water flow q (namely q1 is smaller than q) when the minimum power is combusted, the water outlet temperature T 'is larger than the water use temperature T set by a user, and the water storage temperature T is larger than the water use temperature T set by the user (namely T' > T, T is larger than T), the plate heat exchanger is controlled to stop combusting;
detecting the current water outlet temperature T of the plate heat exchanger, and if the current water outlet temperature T ' is less than the water use temperature T set by a user, calculating the difference between the current water outlet temperature T ' and the water storage temperature T, and recording the difference as a third difference delta T ';
and controlling the opening of the electric three-way valve according to the mapping relation among the third difference value delta T ', the first difference value delta T and the opening D of the electric three-way valve to the water tank so as to enable the water supply temperature of the bathroom water supply pipe to be equal to the water temperature set by a user, namely T + T' = T.
When the liquid level height in the water tank is equal to a second threshold value (the second threshold value is set according to the needs of a user or set according to historical experience values and experimental data, for example, set to be half of the height of the water tank), controlling the opening degree of the electric three-way valve to the water tank to be half, wherein the second threshold value is larger than the first threshold value;
when the liquid level height in the water tank reaches a third threshold (the third threshold is set according to the needs of users, or set according to historical experience values and experimental data, for example, set as the height of the water tank), controlling the plate heat exchanger to stop burning, and controlling the opening of the electric three-way valve to the water tank according to the first difference value delta T, wherein the third threshold is greater than the second threshold.
The technical scheme that this embodiment provided for through a water tank of intercommunication on plate heat exchanger's bathroom outlet pipe for when plate heat exchanger's leaving water temperature is higher, through mixing with the water in the water tank, make the water constant temperature of supplying with the user for the water temperature that the user set for, when having solved among the prior art complete machine minimum power operation, the technical problem that the boiling hot is crossed to the leaving water. Simultaneously, owing to realized going out water constant temperature, the technical scheme that this embodiment provided has still solved among the prior art bathroom and has gone out the water overtemperature after, and the hanging stove automatic shutdown, then the bathroom water becomes cold again, and bathroom water is suddenly cold and suddenly hot, gives the poor problem of user experience.
According to another embodiment of the invention, a constant-temperature water outlet method is provided, which is applied to the constant-temperature water outlet device. Referring to fig. 3, the method may include:
s21, acquiring the water temperature set by a user, the water outlet temperature of the plate heat exchanger and the water storage temperature in the water tank;
s22, detecting whether the constant-temperature water outlet device burns at the minimum power;
s23, when the constant-temperature water outlet device is combusted at the minimum power, controlling the on-off direction and the opening size of an electric three-way valve according to the stored water temperature and the water outlet temperature, and further controlling the outlet water of the plate heat exchanger to be mixed with the water in the water tank so as to enable the constant temperature of the water supplied to a user to be the water temperature;
step S231, when the constant-temperature water outlet device burns at the minimum power, the current water inlet flow of the plate heat exchanger is larger than or equal to the minimum water flow corresponding to the minimum power burning, and the water outlet temperature is equal to the water use temperature set by a user (namely q1 is larger than or equal to q, and T = T'), controlling the on-off direction and the opening size of the electric three-way valve according to a first control strategy;
step S232, when the constant-temperature water outlet device burns at the minimum power, the current water inlet flow of the plate heat exchanger is larger than or equal to the minimum water flow corresponding to the minimum power burning, the water outlet temperature is higher than the water use temperature set by a user, and the water use temperature set by the user is higher than the water storage temperature (namely q1 is larger than or equal to q, T' > T is larger than T), the on-off direction and the opening size of the electric three-way valve are controlled according to a second control strategy;
step S233, when the constant temperature water outlet device is burning with minimum power, and the current water inlet flow of the plate heat exchanger is larger than or equal to the minimum water flow corresponding to the minimum power burning, and the water outlet temperature is larger than the water temperature set by the user, and the water storage temperature is larger than the water temperature set by the user, (i.e. q1 is larger than or equal to q, T' > T, T > T), the on-off direction and the opening size of the electric three-way valve are controlled according to a third control strategy;
step S234, when the constant-temperature water outlet device is combusted at minimum power, the water outlet temperature is higher than the water use temperature set by a user, and the water storage temperature is equal to the water use temperature set by the user (namely T' > T, T = T), controlling the on-off direction and the opening size of the electric three-way valve according to a fourth control strategy;
step S235, if the current constant-temperature water outlet device burns at the minimum power, but the current water inlet flow of the plate heat exchanger is detected to be smaller than the corresponding minimum water flow when the minimum power burns, the water outlet temperature is higher than the water use temperature set by a user, and when the water use temperature set by the user is higher than the water storage temperature (namely q1 is higher than q, T' > T is higher than T), the on-off direction and the opening size of the electric three-way valve are controlled according to a fifth control strategy;
and step S236, if the current constant-temperature water outlet device is combusted at the minimum power, but the current water inlet flow of the plate heat exchanger is detected to be smaller than the corresponding minimum water flow when the minimum power is combusted, the water outlet temperature is higher than the water use temperature set by a user, and the water storage temperature is higher than the water use temperature set by the user (namely q1 is less than q, T' > T, and T is greater than T), controlling the on-off direction and the opening size of the electric three-way valve according to a fifth control strategy.
The specific contents of the first control strategy, the second control strategy, the third control strategy, the fourth control strategy, the fifth control strategy and the sixth control strategy are the same as those in the foregoing embodiment. The specific implementation manner of each step can refer to the description of the foregoing embodiment, and the description of this embodiment is omitted.
It should be noted that the technical solution provided in this embodiment is applied to the controller of the constant temperature water outlet device, and the constant temperature water outlet device is suitable for a wall-mounted furnace.
The technical scheme that this embodiment provided for through a water tank of intercommunication on plate heat exchanger's bathroom outlet pipe for when plate heat exchanger's leaving water temperature is higher, through mixing with the water in the water tank, make the water constant temperature of supplying with the user for the water temperature that the user set for, when having solved among the prior art complete machine minimum power operation, the technical problem that the boiling hot is crossed to the leaving water. Simultaneously, owing to realized going out water constant temperature, the technical scheme that this embodiment provided has still solved among the prior art bathroom and has gone out the water overtemperature after, and the hanging stove automatic shutdown, then the bathroom water becomes cold again, and bathroom water is suddenly cold and suddenly hot, gives the poor problem of user experience.
Of course, it will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program instructing relevant hardware (such as a processor, a controller, etc.), and the program may be stored in a computer readable storage medium, and when executed, the program may include the processes of the above method embodiments. The storage medium may be a memory, a magnetic disk, an optical disk, etc.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (15)
1. The utility model provides a constant temperature water installation, includes plate heat exchanger, its characterized in that still includes:
the water tank is communicated with a bathroom water outlet pipe of the plate type heat exchanger;
the first temperature sensing bulb is arranged in the bathroom water outlet pipe and used for detecting the water outlet temperature of the plate heat exchanger;
the second temperature sensing bulb is arranged in the water tank and used for detecting the water storage temperature in the water tank;
and the controller is used for controlling the outlet water of the plate heat exchanger to be mixed with the water in the water tank according to the stored water temperature and the outlet water temperature when the outlet water temperature is higher than the water temperature set by the user, so that the constant temperature of the water supplied to the user is the water temperature.
2. The constant-temperature water outlet device according to claim 1, further comprising:
and the electric three-way valve is electrically connected with the controller and is sleeved on the bathroom water outlet pipe, a first water outlet of the electric three-way valve is communicated with the water inlet of the water tank, a second water outlet of the electric three-way valve is communicated with a bathroom water supply pipe, and the bathroom water supply pipe is communicated with the water outlet of the water tank and used for supplying water for users.
3. The constant-temperature water outlet device according to claim 1, further comprising:
the flow sensor is electrically connected with the controller, is arranged in a bathroom water inlet pipe of the plate heat exchanger and is used for detecting the water inlet flow of the plate heat exchanger; and/or the presence of a gas in the gas,
and the third temperature sensing bulb is electrically connected with the controller, is arranged in a bathroom water inlet pipe of the plate heat exchanger and is used for detecting the water inlet temperature of the plate heat exchanger.
4. A constant-temperature water outlet device according to claim 1, further comprising:
and the liquid level detection needle is electrically connected with the controller, is arranged in the water tank and is used for detecting the liquid level height in the water tank.
5. The constant-temperature water outlet device according to claim 1, further comprising:
a heating water return pipe of the main heat exchanger is communicated with a heating water return pipe of the plate heat exchanger, and a water pump is arranged in the heating water return pipe of the main heat exchanger; the heating water outlet pipe is communicated with the heating water outlet pipe of the plate heat exchanger through a heating three-way valve.
6. A wall hanging stove, comprising:
a constant temperature water outlet device as defined in any one of claims 1 to 5.
7. A constant-temperature water outlet method is applied to a constant-temperature water outlet device and is characterized by comprising the following steps:
acquiring the water use temperature set by a user, the water outlet temperature of the plate heat exchanger and the water storage temperature in the water tank;
when the water outlet temperature is higher than the water use temperature set by a user, controlling the water outlet of the plate heat exchanger to be mixed with the water in the water tank according to the stored water temperature and the water outlet temperature so as to enable the constant temperature of the water supplied to the user to be the water use temperature; the water tank is communicated with a bathroom water outlet pipe of the plate heat exchanger.
8. Method according to claim 7, characterized in that the outlet water of the plate heat exchanger is controlled to mix with the water in the tank in order to keep the water supplied to the user at the desired constant temperature, in particular:
detecting whether the constant-temperature water outlet device burns at the minimum power;
when the constant-temperature water outlet device is combusted at the minimum power, the on-off direction and the opening size of an electric three-way valve are controlled according to the stored water temperature and the water outlet temperature, and then the water outlet of the plate heat exchanger is controlled to be mixed with the water in the water tank, so that the constant temperature of the water supplied to a user is the water temperature;
the electric three-way valve is sleeved in the bathroom water outlet pipe, a first water outlet of the electric three-way valve is communicated with a water inlet of the water tank, a second water outlet of the electric three-way valve is communicated with a bathroom water supply pipe, and the bathroom water supply pipe is communicated with a water outlet of the water tank and used for supplying water for users.
9. The method of claim 8, wherein said detecting whether said constant temperature water outlet device is burning with minimal power comprises:
after the constant-temperature water outlet device is ignited successfully, burning is carried out according to the minimum power by default; alternatively, the first and second electrodes may be,
detecting the water inlet flow of the plate heat exchanger; if the inflow water flow meets the minimum power combustion condition, controlling the constant-temperature water outlet device to combust at the minimum power; alternatively, the first and second electrodes may be,
detecting the water inlet temperature of the plate heat exchanger; calculating the difference between the water use temperature set by the user and the water inlet temperature, and recording the difference as a first difference; and if the first difference value meets the minimum power combustion condition, controlling the constant-temperature water outlet device to combust at the minimum power.
10. The method of claim 8, wherein controlling the on-off direction and the opening size of the electric three-way valve according to the stored water temperature and the outlet water temperature when the constant temperature water outlet device is combusted with the minimum power comprises:
when the constant-temperature water outlet device is combusted at the minimum power and the water outlet temperature is equal to the water use temperature set by a user, the electric three-way valve is controlled to only communicate the bathroom water outlet pipe of the plate heat exchanger with a bathroom water supply pipe and the opening of the electric three-way valve is controlled to be the maximum.
11. The method of claim 8, wherein the controlling the on-off direction and the opening size of the electric three-way valve according to the stored water temperature and the outlet water temperature when the constant temperature water outlet device is combusted with the minimum power comprises:
when the constant-temperature water outlet device is combusted at the minimum power, the water outlet temperature is higher than the water use temperature set by a user, and the water use temperature set by the user is higher than the water storage temperature, the electric three-way valve is controlled to only communicate the bathroom water outlet pipe with the water inlet of the water tank;
calculating the difference between the water outlet temperature and the water storage temperature, and recording the difference as a second difference;
controlling the opening of the electric three-way valve according to the mapping relation among the second difference, the first difference and the opening of the electric three-way valve to the water tank so as to enable the water supply temperature of the bathroom water supply pipe to be equal to the water supply temperature set by a user; the first difference is the difference between the water temperature set by a user and the water inlet temperature of the plate heat exchanger.
12. The method according to claim 8, wherein when the constant temperature water outlet device is combusted with minimum power, the on-off direction and the opening size of the electric three-way valve are controlled according to the stored water temperature and the outlet water temperature, and the method comprises the following steps:
when the constant-temperature water outlet device is combusted at the minimum power, the water outlet temperature is higher than the water use temperature set by a user, and the stored water temperature is higher than the water use temperature set by the user, the plate heat exchanger is controlled to stop combusting;
detecting the current water outlet temperature of the plate heat exchanger, and if the current water outlet temperature is less than the water use temperature set by a user but greater than the water storage temperature, calculating the difference between the current water outlet temperature and the water storage temperature and recording the difference as a third difference;
controlling the opening of the electric three-way valve according to the mapping relation among the third difference, the first difference and the opening of the electric three-way valve to the water tank so as to enable the water supply temperature of the bathroom water supply pipe to be equal to the water supply temperature set by a user; the first difference is the difference between the water temperature set by a user and the water inlet temperature of the plate heat exchanger.
13. The method of claim 8, wherein the controlling the on-off direction and the opening size of the electric three-way valve according to the stored water temperature and the outlet water temperature when the constant temperature water outlet device is combusted with the minimum power comprises:
when the constant-temperature water outlet device is combusted at the minimum power, the water outlet temperature is higher than the water use temperature set by a user, and the water storage temperature is equal to the water use temperature set by the user, the plate heat exchanger is controlled to stop combusting;
and detecting the current water outlet temperature of the plate heat exchanger, and if the current water outlet temperature is equal to the water use temperature set by a user, controlling the opening of the electric three-way valve to the water tank to be the maximum so as to enable the water supply temperature of the bathroom water supply pipe to be equal to the water use temperature set by the user.
14. The method of claim 11, further comprising:
and if the current water inlet flow of the plate heat exchanger is detected to be smaller than the lowest water flow corresponding to the minimum power combustion, and the liquid level height in the water tank is smaller than or equal to a first threshold value, controlling the plate heat exchanger to stop combustion.
15. The method of claim 12, further comprising:
if the current water inlet flow of the plate heat exchanger is detected to be smaller than the corresponding lowest water flow when the minimum power is combusted, and the liquid level height in the water tank is equal to a second threshold value, controlling the opening degree of the electric three-way valve to the water tank to be half, wherein the second threshold value is larger than the first threshold value;
and when the liquid level height in the water tank reaches a third threshold value, controlling the plate heat exchanger to stop burning, and controlling the opening of the electric three-way valve to the water tank according to the first difference value, wherein the third threshold value is larger than the second threshold value.
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| CN202211287395.9A CN115900078A (en) | 2022-10-20 | 2022-10-20 | Constant-temperature water outlet device, wall-mounted furnace and constant-temperature water outlet method |
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