CN111457579B - Water heater system and control method thereof - Google Patents
Water heater system and control method thereof Download PDFInfo
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- CN111457579B CN111457579B CN202010406816.XA CN202010406816A CN111457579B CN 111457579 B CN111457579 B CN 111457579B CN 202010406816 A CN202010406816 A CN 202010406816A CN 111457579 B CN111457579 B CN 111457579B
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- pipeline
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 407
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 47
- 238000004891 communication Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
-
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/0026—Domestic hot-water supply systems with conventional heating means
- F24D17/0031—Domestic hot-water supply systems with conventional heating means with accumulation of the heated water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/0078—Recirculation systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/0094—Recovering of cold water
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 relates to a water heater system and a control method thereof, wherein the water heater system comprises: a water heater main unit; the water inlet end of the hot water pipeline is connected with the water outlet end of the water heater host, and the water outlet end of the hot water pipeline is connected with the water using terminal; the water inlet end of the cold water pipeline is connected with the water inlet end of the water heater host, and the water outlet end of the cold water pipeline is connected with the water using terminal; the circulating pipeline is connected between the hot water pipeline and the cold water pipeline; a constant temperature unit is arranged in the water heater host, which comprises: the constant temperature cabin is provided with a constant temperature cavity, and the constant temperature cavity is communicated with the water inlet end of the hot water pipeline; and the pushing mechanism can apply pushing force to the water in the constant temperature cavity so as to push the water in the constant temperature cavity into the hot water pipeline. According to the water heater system, the pushing mechanism can push hot water in the hot water pipeline to accurately reach the water outlet point of the water outlet end of the hot water pipeline, so that the phenomenon that the cold water pipeline is heated due to the fact that redundant hot water enters the cold water pipeline to influence the normal use of cold water is avoided.
Description
Technical Field
The invention relates to the technical field of heat exchange equipment, in particular to a water heater system and a control method thereof.
Background
With the development of society and the progress of technology, the demands of people for life quality are gradually increased, and a water heater for providing domestic hot water becomes one of the indispensable appliances in people's life. With the increasing demands of people on life quality, the demands of water heaters are also increased gradually, and zero-cooling water heaters are generated accordingly. The zero cold water heater widely used at present is connected with the hot water pipeline and the cold water pipeline, so that water in the hot water pipeline returns to the main machine of the water heater through the cold water pipeline for cyclic heating, and a user can obtain hot water without waiting.
However, the zero-cold water heater often causes hot water flowing into the cold water pipeline to raise the temperature, so that other devices (such as a water purifier) connected to the cold water pipeline are damaged, and energy is wasted.
Disclosure of Invention
Based on this, it is necessary to provide a water heater system and a control method thereof that effectively prevent a cold water pipe from being heated by circulating hot water, in order to solve the problem that the cold water pipe is heated by circulating hot water.
A water heater system, the water heater system comprising:
a water heater main unit;
the water inlet end of the hot water pipeline is connected with the water outlet end of the water heater host, and the water outlet end of the hot water pipeline is connected with a water terminal;
the water inlet end of the cold water pipeline is connected with the water inlet end of the water heater host, and the water outlet end of the cold water pipeline is connected with the water using terminal;
the circulating pipeline is connected between the hot water pipeline and the cold water pipeline;
wherein, be equipped with the constant temperature unit in the water heater host computer, the constant temperature unit includes:
the constant temperature chamber is provided with a constant temperature chamber, and the constant temperature chamber is communicated with the water inlet end of the hot water pipeline;
a pushing mechanism for controllably pushing the water in the constant temperature cavity into the hot water pipeline.
In one embodiment, the volume of the thermostatic chamber is greater than the total volume of the hot water conduit.
In one embodiment, one end of the pushing mechanism extends into the constant temperature cavity and divides the constant temperature cavity into a first constant temperature cavity and a second constant temperature cavity, the second constant temperature cavity is communicated with the water inlet end of the hot water pipeline, and one end of the pushing mechanism extending into the constant temperature cavity can move along the direction of the first constant temperature cavity and the second constant temperature cavity pointing mutually so as to push water in the second constant temperature cavity into the hot water pipeline.
In one embodiment, one end of the pushing mechanism extending into the constant temperature cabin is selectively communicated with the first constant temperature cavity and the second constant temperature cavity;
when one end of the pushing mechanism extending into the constant temperature cavity is static relative to the constant temperature cabin, the first constant temperature cavity and the second constant temperature cavity are communicated with each other through the pushing mechanism; when one end of the pushing mechanism extending into the constant temperature cavity moves along the direction that the first constant temperature cavity points to the second constant temperature cavity, the first constant temperature cavity and the second constant temperature cavity are disconnected with each other through the pushing mechanism.
In one embodiment, the pushing mechanism includes a piston rod, a piston plate and an opening and closing member, the piston plate is disposed at one end of the piston rod, one end of the piston rod provided with the piston plate is inserted into the constant temperature cavity, the piston plate separates the constant temperature cavity into a first constant temperature cavity and a second constant temperature cavity, the piston plate is provided with a communication hole for communicating the first constant temperature cavity with the second constant temperature cavity, the opening and closing member is mounted on the piston plate, and the opening and closing member can close or open the communication hole under the action of external force.
In one embodiment, the shutter is rotatably mounted to a side of the piston plate facing the second thermostatic chamber.
In one embodiment, the piston plate is provided with a plurality of communication holes, the pushing mechanism comprises a plurality of opening and closing pieces, and each opening and closing piece correspondingly closes or opens one communication hole.
In one embodiment, the pushing mechanism further comprises a driving piece, the driving piece is arranged outside the constant temperature cabin, one end of the piston rod extending out of the constant temperature cabin is connected with the driving piece in a transmission mode, and the driving piece is used for driving the piston rod to reciprocate along the direction that the first constant temperature cavity and the second constant temperature cavity point to each other.
A control method of a water heater system, comprising the steps of:
when the water heater host is in a standby state, acquiring the temperature of the water outlet end of the hot water pipeline;
when the temperature of the water outlet end of the hot water pipeline is lower than the preset circulation starting temperature, thrust is applied to the water in the constant temperature cavity so as to push the water in the constant temperature cavity into the hot water pipeline.
In one embodiment, the volume of water pushed into the hot water pipe is equal to the volume of the hot water pipe.
In one embodiment, the water heater system includes a pushing mechanism for applying a pushing force to the water in the constant temperature chamber, one end of the pushing mechanism extends into the constant temperature chamber, and the control method of the water heater system further includes the steps of:
acquiring the length and the pipe diameter of the hot water pipeline;
and calculating the moving distance of the pushing mechanism extending into one end of the constant temperature cavity in the process of applying thrust to the water in the constant temperature cavity according to the length and the pipe diameter of the hot water pipeline.
According to the water heater system, when the user turns off the water terminal and stops using water and the water heater is in the standby state, once the temperature sensor detects that the temperature of the water outlet end of the hot water pipeline is lower than the preset circulation starting temperature, the control unit can control the pushing mechanism to push the pushing mechanism into the hot water pipeline, so that the water in the hot water pipeline is guaranteed to have a higher temperature all the time. Meanwhile, the water with lower temperature originally remained in the hot water pipeline enters the heat exchange unit through the circulating pipeline and the cold water pipeline for circulating heating. Moreover, the pushing mechanism can push hot water in the hot water pipeline to accurately reach the water outlet point of the water outlet end of the hot water pipeline, so that the phenomenon that the normal use of cold water is influenced due to the fact that redundant hot water enters the cold water pipeline to heat the cold water pipeline is avoided.
Drawings
FIG. 1 is a schematic diagram of a water heater system according to an embodiment of the present invention;
FIG. 2 is a schematic view of a structure in which a first thermostatic chamber and a second thermostatic chamber of a thermostatic unit of the water heater system shown in FIG. 1 are in communication with each other;
FIG. 3 is a schematic view of a configuration of a thermostat unit of the water heater system of FIG. 2 with a first thermostat chamber and a second thermostat chamber disconnected from each other;
FIG. 4 is a front view of the piston plate of the thermostatic unit shown in FIG. 1;
FIG. 5 is a schematic cross-sectional view of a piston plate of the thermostatic unit shown in FIG. 4;
FIG. 6 is a flow chart of a control method of the water heater system of FIG. 1.
Reference numerals illustrate:
100. a water heater system; 10. a water heater main unit; 11. a combustion unit; 12. a water inlet pipeline; 13. a heat exchange unit; 14. a water outlet pipeline; 15. a constant temperature unit; 152. a constant temperature cabin; 1521. a first constant temperature chamber; 1523. a second constant temperature chamber; 154. a pushing mechanism; 1541. a driving member; 1543. a piston rod; 1545. a piston plate; 1542a, communication holes; 1547. an opening/closing member; 20. a hot water pipe; 30. a cold water pipe; 40. a circulation pipe; 50. and (5) using a water terminal.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Referring to FIG. 1, a system schematic diagram of a water heater system 100 in an embodiment of the invention is shown. An embodiment of the present invention provides a water heater system 100, and a structure of the water heater system 100 of the present application will be described below by taking the water heater system 100 as a gas water heater system as an example. The present embodiment is only used as an example and does not limit the technical scope of the present application. It will be appreciated that in other embodiments, the water heater system 100 may also be embodied as other heat exchange systems that generate hot water, and is not limited in this regard.
The water heater system 100 includes a control unit (not shown), a water heater main 10, a hot water pipe 20, a cold water pipe 30, a circulation pipe 40, and a water terminal 50, and hot water generated by the water heater main 10 is transferred to the water terminal 50 through the hot water pipe 20 under the control of the control unit, and cold water outputted from an external water supply device is transferred to the water terminal 50 through the cold water pipe 30, thereby providing domestic water of different temperatures to a user.
The water heater main unit 10 includes a combustion unit 11, an inlet pipe 12, a heat exchange unit 13, and an outlet pipe 14. Specifically, the water inlet end of the water inlet pipeline 12 is connected to an external water supply device, the water outlet end of the water inlet pipeline 12 is connected to the water inlet end of the heat exchange unit 13, the water outlet end of the heat exchange unit 13 is connected to the water inlet end of the water outlet pipeline 14, and the water outlet end of the water outlet pipeline 14 is connected to the hot water pipeline 20. The combustion unit 11 is arranged on one side of the heat exchange unit 13, and heat generated by combustion of fuel gas in the combustion unit 11 exchanges heat with the heat exchange unit 13.
In this way, the water flowing into the heat exchanging unit 13 through the water inlet pipe 12 absorbs heat generated by combustion of the gas in the combustion unit 11 to be warmed, and the warmed water is transferred to the hot water pipe 20 through the water outlet pipe 14 to supply water to the water terminal 50.
The water inlet end of the hot water pipeline 20 is connected to the water outlet end of the water heater host 10, and specifically connected to the water outlet end of the constant temperature unit 15, the water outlet end of the hot water pipeline 20 is connected to the water terminal 50, and the water outlet end of the hot water pipeline 20 is provided with a temperature sensor for detecting the water temperature of the water outlet end of the hot water pipeline 20. In this way, the hot water flowing out of the outlet pipe 14 flows into the water terminal 50 through the hot water pipe 20, and the control unit can acquire the water temperature of the outlet end of the hot water pipe 20 in real time.
Further, the water inlet of the cold water pipe 30 is connected to the water inlet of the water heater main unit 10 (i.e., the water inlet of the water inlet pipe 12) while being connected to an external water supply device, so that the water inlet of the cold water pipe 30 may alternatively communicate with the external water supply device or the water inlet of the water heater main unit 10. The water heater system 100 further comprises a circulation pipe 40, wherein the circulation pipe 40 is connected between the hot water pipe 20 and the cold water pipe 30, and is specifically located between the hot water pipe 20 and the cold water pipe 30 at the far end from the water heater host 10, and the circulation pipe 40 is provided with a one-way valve to connect the hot water pipe 20 and the cold water pipe 30 in one way.
Thus, when the user closes the water terminal 50 to stop using water, the residual water in the hot water pipe 20 may enter the cold water pipe 30 through the circulation pipe 40, then flow back to the water inlet pipe 12 through the cold water pipe 30, and finally enter the heat exchange unit 13 to be circularly heated under the control of the control unit. Therefore, when the user turns on the water terminal 50 again, the hot water pipe 20 does not have a residual cold water output, thereby achieving a zero cold water effect.
With continued reference to fig. 1, in the embodiment of the present application, the water outlet pipeline 14 further includes a constant temperature unit 15, as shown in fig. 2 and 3, the constant temperature unit 15 includes a constant temperature cabin 152 and a pushing mechanism 154, the constant temperature cabin 152 has a constant temperature chamber for storing water, a water inlet end of the constant temperature chamber is connected to the heat exchange unit 13 through a pipe, a water outlet end of the constant temperature chamber is connected to a water inlet end of the hot water pipe 20, and a volume of the constant temperature chamber is larger than a total volume of the hot water pipe 20. The pushing mechanism 154 may apply a pushing force to the water in the thermostatic chamber under the control of the control unit to push the water of the thermostatic chamber into the hot water pipe 20.
In this way, when the user turns off the water terminal 50 and stops using water and the water heater is in a standby state, once the temperature sensor detects that the temperature of the water outlet end of the hot water pipe 20 is lower than the preset cycle starting temperature, the control unit can control the pushing mechanism 154 to push the water into the hot water pipe 20, thereby ensuring that the water in the hot water pipe 20 has a higher temperature all the time. At the same time, the water with lower temperature originally remained in the hot water pipeline 20 enters the heat exchange unit 13 through the circulating pipeline 40 and the cold water pipeline 30 for circulating heating. Moreover, the pushing mechanism 154 can push the hot water in the hot water pipeline 20 to accurately reach the water outlet point of the water outlet end of the hot water pipeline 20, so that the phenomenon that the cold water pipeline 30 is heated to influence the normal use of cold water due to the fact that excessive hot water enters the cold water pipeline 30 is avoided.
Referring to fig. 2 and 3, specifically, one end of the pushing mechanism 154 extends into the constant temperature chamber and divides the constant temperature chamber into a first constant temperature chamber 1521 and a second constant temperature chamber 1523, the first constant temperature chamber 1521 is connected to the water outlet end of the heat exchange unit 13 through a pipe, the second constant temperature chamber 1523 is communicated with the water inlet end of the hot water pipe 20, and one end of the pushing mechanism 154 extending into the constant temperature chamber can move along the direction of the first constant temperature chamber 1521 pointing to the second constant temperature chamber 1523 relative to the constant temperature chamber 152 so as to push the water in the second constant temperature chamber 1523 into the hot water pipe 20.
Specifically, in one embodiment, the pushing mechanism 154 includes a drive member 1541, a piston rod 1543, a piston plate 1545, and an opening and closing member 1547. Wherein, the driving member 1541 is located outside the constant temperature chamber, one end of the piston rod 1543 is connected to the driving member 1541 in a transmission manner, and the driving member 1541 is used for driving the piston rod 1543 to reciprocate along the direction in which the first constant temperature chamber 1521 and the second constant temperature chamber 1523 point. The piston plate 1545 is disposed at the other end of the piston rod 1543 away from the drive member 1541, and the end of the piston rod 1543 provided with the piston plate 1545 is inserted into the thermostatic chamber, the outer diameter of the piston plate 1545 being matched with the inner diameter of the thermostatic chamber, thereby separating the thermostatic chamber into adjacent first and second thermostatic chambers 1521 and 1523.
As shown in fig. 4 and 5, the piston plate 1545 is perforated with a plurality of communication holes 1542a communicating the first constant temperature chamber 1521 and the second constant temperature chamber 1523, and a plurality of opening and closing members 1547 are rotatably provided on a side of the piston plate 1545 facing the second constant temperature chamber 1523, and each opening and closing member 1547 can correspondingly close or open one communication hole 1542a under the action of external force.
In this manner, the end of the pushing mechanism 154 that extends into the pod 152 selectively communicates with the first and second chambers 1521, 1523. Specifically, as shown in fig. 2, when the piston rod 1543 is stationary with respect to the constant temperature compartment 152, the water in the first constant temperature chamber 1521 pushes the opening and closing member 1547 to rotate in the water flow direction to open the communication hole 1542a, thereby flowing into the second constant temperature chamber 1523 through the communication hole 1542a. As shown in fig. 3, when the control unit controls the driving member 1541 to drive the piston rod 1543 to move in the direction in which the first thermostatic chamber 1521 points to the second thermostatic chamber 1523, the opening and closing member 1547 closes the communication hole 1542a under the urging of the reaction force of the water in the second thermostatic chamber 1523, the water in the second thermostatic chamber 1523 being pushed into the hot water pipe 20 by the piston plate 1545.
In the above water heater system 100, when the water heater system 100 is in a normal water supply state, the first constant temperature chamber 1521 and the second constant temperature chamber 1523 are mutually communicated, and the water with different temperatures output from the heat exchange unit 13 can be uniformly mixed in the constant temperature chamber, so that the hot water with too high temperature and the cold water with too low temperature are buffered, and therefore the water input into the hot water pipeline 20 from the constant temperature chamber has a stable temperature.
When the water heater is in the standby state, once the temperature sensor detects that the temperature of the water outlet end of the hot water pipe 20 is lower than the preset cycle starting temperature, the control unit can control the pushing mechanism 154 to push out the water in the constant temperature cavity into the hot water pipe 20 so as to keep the water in the hot water pipe 20 at the preset temperature all the time. The water with lower temperature originally in the hot water pipeline 20 returns to the main machine 10 of the water heater through the circulating pipeline 40 and the cold water pipeline 30 to absorb heat again for temperature rise, and then enters the constant temperature cavity for storage.
The above process is continuously circulated, so that the water in the hot water pipeline 20 is always kept at the preset temperature, the effect of zero cold water zero waiting is achieved, the cold water pipeline 30 is not heated, and unnecessary resource waste is avoided. In addition, since the hot water and the cold water outputted from the heat exchange unit 13 can be sufficiently mixed in the constant temperature unit 15, the fluctuation of the water temperature due to the unstable water pressure of the external water supply device is effectively prevented,
referring to fig. 2, a control method of a water heater system 100 according to an embodiment of the invention includes the following steps:
s110: when the water heater main body 10 is in a standby state, the temperature of the outlet end of the hot water pipe 20 is obtained.
Specifically, when the water heater main body 10 is in the standby state, no water flows out of the water terminal 50 at this time, and the temperature sensor at the water outlet end of the hot water pipe 20 acquires the temperature of the water outlet end of the hot water pipe 20 and transmits it to the control unit.
S120: when the temperature of the water outlet end of the hot water pipe 20 is lower than the preset cycle start temperature, a pushing force is applied to the water in the constant temperature chamber to push the water of the constant temperature chamber into the hot water pipe 20.
Specifically, when the control unit obtains that the temperature of the water outlet end of the hot water pipeline 20 is lower than the preset cycle starting temperature, the control unit controls the driving member 1541 to drive the piston rod 1543 to move, and the piston plate 1545 pushes the hot water in the second constant temperature cavity 1523 into the hot water pipeline 20.
In some embodiments, since the inner diameter of the constant temperature cavity is constant, the control unit can obtain the length and the pipe diameter of the hot water pipe 20, and then calculate the moving distance of the piston plate 1545 of the pushing mechanism 154 in the process of pushing the water in the constant temperature cavity according to the length and the pipe diameter of the hot water pipe 20, so that the volume of the water pushed into the hot water pipe 20 by the pushing mechanism 154 is equal to the volume of the hot water pipe 20, thereby avoiding the excessive hot water from entering the cold water pipe 30 through the circulation pipe 40 to heat the cold water pipe 30, and further avoiding the damage and energy waste to other devices on the cold water pipe 30 caused by the temperature rise of the cold water pipe 30.
S130: heating the water pushed into the water heater main unit 10.
Specifically, the water originally located in the hot water pipeline 20 with lower temperature returns to the water heater host 10 through the circulating pipeline 40 and the cold water pipeline 30 in sequence under the action of the water pushed out of the constant temperature cavity, absorbs heat again, heats up, and finally enters the constant temperature cavity for storage.
In this way, the above process is circulated, so that the water in the hot water pipe 20 can always maintain the preset temperature, and the user can obtain the hot water having the preset temperature immediately after turning on the water terminal 50.
The water heater system 100 and the control method thereof enable a user to quickly obtain hot water of a preset temperature without waiting after opening the water terminal 50 by pushing the hot water in the constant temperature chamber into the hot water pipe 20. Also, since the volume of water pushed into the hot water pipe 20 can be controlled by controlling the moving distance of the piston plate 1545 of the pushing mechanism 154, it is possible to make the level pushed into the hot water pipe 20 reach the water outlet point of the water outlet end of the hot water pipe 20 without excessive hot water entering into the cold water pipe 30 to cause the temperature of the cold water pipe 30 to rise. In addition, the hot water and the cold water which are output by the heat exchange unit 13 and have too high temperature can be uniformly mixed in the constant temperature cavity, so that the temperature of the hot water output by the water heater host 10 is kept stable, and meanwhile, the user experience is improved due to buffering.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. A water heater system, the water heater system comprising:
a water heater main unit (10);
the water outlet end of the hot water pipeline (20) is provided with a temperature sensor which is used for detecting the water temperature of the water outlet end of the hot water pipeline (20);
a cold water pipeline (30), wherein the water inlet end of the cold water pipeline (30) is connected with the water inlet end of the water heater host (10), and the water outlet end of the cold water pipeline (30) is connected with the water terminal (50);
a circulation pipe (40) connected between the hot water pipe (20) and the cold water pipe (30);
wherein, be equipped with constant temperature unit (15) in water heater host computer (10), constant temperature unit (15) include:
a constant temperature cabin (152) with a constant temperature cavity, wherein the constant temperature cavity is communicated with the water inlet end of the hot water pipeline (20);
a pushing mechanism (154), wherein one end of the pushing mechanism (154) extends into the constant temperature cavity and divides the constant temperature cavity into a first constant temperature cavity (1521) and a second constant temperature cavity (1523), the second constant temperature cavity (1523) is communicated with the water inlet end of the hot water pipeline (20), one end of the pushing mechanism (154) extending into the constant temperature cavity can move along the direction of the first constant temperature cavity (1521) and the second constant temperature cavity (1523) pointing mutually, the pushing mechanism can controllably apply pushing force to water in the second constant temperature cavity (1523) to push the water in the second constant temperature cavity (1523) into the hot water pipeline (20), and one end of the pushing mechanism (154) extending into the constant temperature cavity (152) can be selectively communicated with the first constant temperature cavity (1521) and the second constant temperature cavity (1523);
when one end of the pushing mechanism (154) extending into the constant temperature cavity is static relative to the constant temperature cabin (152), the first constant temperature cavity (1521) and the second constant temperature cavity (1523) are communicated with each other through the pushing mechanism (154); when one end of the pushing mechanism (154) extending into the constant temperature cavity moves along the direction that the first constant temperature cavity (1521) points to the second constant temperature cavity (1523), the first constant temperature cavity (1521) and the second constant temperature cavity (1523) are disconnected from each other through the pushing mechanism (154).
2. The water heater system according to claim 1, wherein the volume of the thermostatic chamber is greater than the total volume of the hot water conduit (20).
3. The water heater system according to claim 1, wherein the pushing mechanism (154) comprises a piston rod (1543), a piston plate (1545) and an opening and closing member (1547), the piston plate (1545) is disposed at one end of the piston rod (1543), one end of the piston rod (1543) provided with the piston plate (1545) is inserted into the constant temperature chamber, the piston plate (1545) divides the constant temperature chamber into the first constant temperature chamber (1521) and the second constant temperature chamber (1523), the piston plate (1545) is provided with a communication hole (1542 a) for communicating the first constant temperature chamber (1521) and the second constant temperature chamber (1523), the opening and closing member (1547) is mounted on the piston plate (1545), and the opening and closing member (1547) can close or open the communication hole (1542 a) under the action of an external force.
4. A water heater system according to claim 3, wherein the shutter (1547) is rotatably mounted to a side of the piston plate (1545) facing the second thermostatic chamber (1523).
5. A water heater system according to claim 3, wherein the piston plate (1545) is provided with a plurality of communication holes (1542 a), and the pushing mechanism (154) includes a plurality of opening and closing members (1547), each of the opening and closing members (1547) closing or opening one of the communication holes (1542 a) in correspondence.
6. A water heater system according to claim 3, wherein the pushing mechanism (154) further comprises a driving member (1541), the driving member (1541) is disposed outside the constant temperature chamber (152), one end of the piston rod (1543) extending out of the constant temperature chamber (152) is in transmission connection with the driving member (1541), and the driving member (1541) is used for driving the piston rod (1543) to reciprocate along the direction in which the first constant temperature chamber (1521) and the second constant temperature chamber (1523) point to each other.
7. A control method of a water heater system as claimed in any one of claims 1 to 6, comprising the steps of:
when the water heater host (10) is in a standby state, acquiring the temperature of the water outlet end of the hot water pipeline (20);
when the temperature of the water outlet end of the hot water pipeline (20) is lower than the preset cycle starting temperature, thrust is applied to the water in the constant temperature cavity so as to push the water in the constant temperature cavity into the hot water pipeline (20).
8. A control method of a water heater system according to claim 7, characterized in that the volume of water pushed into the hot water pipe (20) is equal to the volume of the hot water pipe (20).
9. A control method of a water heater system according to claim 8, characterized in that the water heater system comprises a pushing mechanism (154) for applying a pushing force to the water in the thermostatic chamber, one end of the pushing mechanism (154) extending into the thermostatic chamber, the control method of the water heater system further comprising the steps of:
acquiring the length and the pipe diameter of the hot water pipe (20);
according to the length and the pipe diameter of the hot water pipe (20), the moving distance of the pushing mechanism (154) extending into one end of the constant temperature cavity in the process of applying thrust to the water in the constant temperature cavity is calculated.
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