CN105066433B - The control method of hot-water heating system, thermostat and thermostat - Google Patents
The control method of hot-water heating system, thermostat and thermostat Download PDFInfo
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- CN105066433B CN105066433B CN201510468432.XA CN201510468432A CN105066433B CN 105066433 B CN105066433 B CN 105066433B CN 201510468432 A CN201510468432 A CN 201510468432A CN 105066433 B CN105066433 B CN 105066433B
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Abstract
The invention discloses a kind of thermostat, including：Water storage device, water storage device is interior to be provided with heater, and the water inlet of water storage device is used for external hot water facility；Triple valve, the first end of triple valve and the water inlet of water storage device connect, the external feed pipe in the second end of triple valve；Thermostatic assembly, the first water inlet of thermostatic assembly and the delivery port of water storage device connect, the second water inlet of thermostatic assembly and the three-terminal link of triple valve, and the delivery port of thermostatic assembly uses water end (W.E.) for external.The thermostat solves the problems, such as pipeline cold water by the control to triple valve, and continuously provides the constant hot water of water temperature to meet users'comfort requirement.The invention also discloses a kind of hot-water heating system and a kind of control method of thermostat.
Description
Technical field
The present invention relates to hot water system technology field, more particularly to a kind of thermostat, a kind of hot-water heating system and one kind
The control method of thermostat.
Background technology
At present, need to bleed off many cold water when gas heater is used alone could obtain hot water, and in use
Water temperature is easily sometimes hot and sometimes cold；Solar water heater is also required to bleed off many cold water, and the hot water one of solar water heater output
As temperature it is all very high, when by water mixing valve output when, because the pressure differential between hot and cold water is larger, it is difficult to by lower water temperature to use
Temperature needed for family；For air-source water heater or wall hot water device, generally require manually or automatically water mixing valve and mix
Water, manual water mixing valve needs user to adjust manually, inconvenient for use, if inadequate using domestic automatic water-mixing valve, leaving water temperature
It is constant sometimes hot and sometimes cold phenomenon easily occur, and if using external water mixing valve, then it will increase user cost.
The content of the invention
The purpose of the present invention is intended at least solve one of above-mentioned technological deficiency.Therefore, it is an object of the present invention to
It is proposed that one kind can solve the problem that pipeline cold water problem, and provide the constant hot water of water temperature to meet that the constant temperature of users'comfort requirement fills
Put.
It is another object of the present invention to propose a kind of hot-water heating system.A further object of the present invention is to propose one kind
The control method of thermostat.
To reach above-mentioned purpose, one aspect of the present invention embodiment proposes a kind of thermostat, including：Water storage device, institute
State in water storage device and be provided with heater, the water inlet of the water storage device is used for external hot water facility；Triple valve, the triple valve
First end be connected with the water inlet of the water storage device, the external feed pipe in the second end of the triple valve；Thermostatic assembly, it is described
First water inlet of thermostatic assembly is connected with the delivery port of the water storage device, the second water inlet of the thermostatic assembly with it is described
The three-terminal link of triple valve, the delivery port of the thermostatic assembly use water end (W.E.) for external.
According to one embodiment of present invention, above-mentioned thermostat also includes：Second detection module, second detection
Module is arranged on the water inlet of the water storage device to detect the water inlet water temperature of the water storage device；Control module, the control
Molding block is connected with the triple valve and second detection module respectively, and the control module is used to obtain going out for user's setting
Temperature gap between coolant-temperature gage and the water inlet water temperature of the water storage device, and the threeway is controlled according to the temperature gap
The first end of valve or the second end connect with the 3rd end of the triple valve.
Wherein, when the water inlet water temperature is less than the leaving water temperature of user setting and the temperature gap is more than default
Temperature threshold when, the control module controls the first end of the triple valve to be connected with the 3rd end；Otherwise, the control module
The second end of the triple valve is controlled to be connected with the 3rd end.
According to one embodiment of present invention, above-mentioned thermostat, in addition to：First detection module, first inspection
Survey module is arranged on the water outlet of the thermostatic assembly to detect the delivery port water temperature of the thermostatic assembly, and described first detects
Module is connected with the control module.
According to one embodiment of present invention, above-mentioned thermostat also includes：3rd detection module, the 3rd detection
Module is arranged on the first water inlet of the thermostatic assembly to detect the first water inlet temperature of the thermostatic assembly；4th inspection
Survey module, the 4th detection module is arranged on the second water inlet of the thermostatic assembly to detect the of the thermostatic assembly
Two water inlet temperature；Wherein, the control module also respectively with the thermostatic assembly, the 3rd detection module and the described 4th
Detection module is connected, and the control module is according to the delivery port water temperature, the first water inlet temperature and second water inlet
Thermostatic assembly described in mouthful temperature control is to adjust the water inlet ratio of the first water inlet of the thermostatic assembly and the second water inlet.
According to one embodiment of present invention, the first detection module is additionally operable to detect the delivery port of the thermostatic assembly
Water-carrying capacity, wherein, when the delivery port water-carrying capacity is more than the first temperature threshold more than the first preset flow and the delivery port water temperature
During value, or when the delivery port water-carrying capacity is less than second temperature threshold more than first preset flow and the delivery port water temperature
During value, the control module controls the delivery port of the thermostatic assembly to close, wherein, first temperature threshold is more than described the
Two temperature thresholds.
According to one embodiment of present invention, when the water inlet water temperature of the water storage device is less than going out for the thermostatic assembly
Outlet water temperature, the control module control the heater to open；When the water inlet water temperature of the water storage device is more than or equal to
The delivery port water temperature of the thermostatic assembly, the control module control the heater to close.
According to one embodiment of present invention, second detection module is additionally operable to detect the water inlet of the water storage device
Water-carrying capacity, wherein, when the water inlet water-carrying capacity of the water storage device is less than first flow threshold value, the control module heightens institute
The water inlet ratio of the first water inlet of thermostatic assembly is stated, until the water inlet water-carrying capacity of the water storage device is more than or equal to described
First flow threshold value.
According to one embodiment of present invention, above-mentioned thermostat, in addition to：Communication module, the communication module with
The control module is connected, and the communication module and intelligent terminal communicate wirelessly and pass through the intelligence eventually to receive user
The control instruction sent is held, and the operational factor of the thermostat is fed back into the intelligent terminal.
According to one embodiment of present invention, the thermostatic assembly is electronic thermostatic valve.
Thermostat according to embodiments of the present invention, water storage device is interior to be provided with heater, and the water inlet of water storage device is used for
External hot water facility, the first end of triple valve and the water inlet of water storage device connect, and the external feed pipe in the second end of triple valve is permanent
First water inlet of warm component and the delivery port of water storage device connect, the second water inlet of thermostatic assembly and the 3rd end of triple valve
Connection, the delivery port of thermostatic assembly be used for it is external use water end (W.E.), the second detection module is arranged on the water inlet of water storage device to detect
The water inlet water temperature of water storage device, control module are connected with triple valve and the second detection module respectively, and control module is used to obtain
Temperature gap between leaving water temperature and the water inlet water temperature of water storage device that user is set, when water inlet water temperature is set less than user
When the leaving water temperature and temperature gap put are more than default temperature threshold, the first end of control module control triple valve and the 3rd end
Connect, otherwise the second end of control module control triple valve connects with the 3rd end.Therefore, the thermostat of the embodiment of the present invention leads to
The control to triple valve is crossed to solve the problems, such as pipeline cold water, ensures that the water temperature in water storage device does not decline substantially, so as to ensure
Coolant-temperature gage is constant, meets user's request.During due to being cold water in pipeline, only fraction cold water enters water storage device, therefore stores up
The power of heater in water installations can be with smaller, without specially laying power line to the heater in water storage device.
In addition, embodiments of the invention also proposed a kind of hot-water heating system, it includes above-mentioned thermostat and hot water is set
Standby, the hot water facility is electric heater, gas heater, solar water heater or Teat pump boiler.
The hot-water heating system can solve the problem that pipeline cold water problem, so as to ensure leaving water temperature perseverance by above-mentioned thermostat
It is fixed, meet user's request.During due to being cold water in pipeline, only fraction cold water enters water storage device, therefore in water storage device
The power of heater can be with smaller, without specially laying power line to the heater in water storage device.
To reach above-mentioned purpose, another aspect of the present invention embodiment proposes a kind of control method of thermostat, described
Thermostat includes water storage device, triple valve and thermostatic assembly, and heater is provided with the water storage device, the water storage device
Water inlet is used for external hot water facility, and the first end of the triple valve is connected with the water inlet of the water storage device, the threeway
The external feed pipe in the second end of valve, the first water inlet of the thermostatic assembly is connected with the delivery port of the water storage device, described
Second water inlet of thermostatic assembly and the three-terminal link of the triple valve, the delivery port of the thermostatic assembly use water for external
End, the control method comprise the following steps：Detect the water inlet water temperature of the water storage device；Obtain user's setting goes out water temperature
Temperature gap between degree and the water inlet water temperature of the water storage device, and the temperature gap is judged；It is if described
Water inlet water temperature is less than the leaving water temperature that the user is set and the temperature gap is more than default temperature threshold, then controls institute
The first end for stating triple valve connects with the 3rd end；If the water inlet water temperature goes out water temperature more than or equal to what the user was set
Degree, or the water inlet water temperature is less than the leaving water temperature that the user is set and the temperature gap is less than or equal to described pre-
If temperature threshold, then control the second end of the triple valve to be connected with the 3rd end.
The control method of thermostat according to embodiments of the present invention, the water inlet water temperature of water storage device is detected first, so
The temperature gap between the leaving water temperature of user's setting and the water inlet water temperature of water storage device is obtained afterwards, and temperature gap is carried out
Judge, if water inlet water temperature is less than the leaving water temperature that user is set and temperature gap is more than default temperature threshold, control
The first end of triple valve connects with the 3rd end, otherwise controls the second end of triple valve to be connected with the 3rd end.Therefore, the present invention is implemented
The control method of the thermostat of example solves the problems, such as pipeline cold water by the control to triple valve, ensures the water in water storage device
Temperature does not decline substantially, so as to ensure effluent temperature constancy, meets user's request.Meanwhile when in pipeline being cold water, only small portion
Cold water is divided to enter water storage device, therefore the power of the heater in water storage device can be with smaller, without to water storage device
Interior heater specially lays power line.
According to one embodiment of present invention, the control method of above-mentioned thermostat, in addition to：Detect the constant temperature group
The delivery port water temperature of part, and the first water inlet temperature of the thermostatic assembly is detected, and the second of the detection thermostatic assembly
Water inlet temperature；According to the delivery port water temperature, the first water inlet temperature and the second water inlet temperature control
Thermostatic assembly is to adjust the water inlet ratio of the first water inlet of the thermostatic assembly and the second water inlet, so that the water outlet saliva
Temperature meets the water demand with water end (W.E.).
According to one embodiment of present invention, the control method of above-mentioned thermostat, the thermostatic assembly is also detected
Delivery port water-carrying capacity, wherein, when the delivery port water-carrying capacity is more than first more than the first preset flow and the delivery port water temperature
During temperature threshold, or when the delivery port water-carrying capacity is less than second more than first preset flow and the delivery port water temperature
During temperature threshold, the delivery port of the thermostatic assembly is also controlled to close, wherein, first temperature threshold is more than the described second temperature
Spend threshold value.
According to one embodiment of present invention, the control method of above-mentioned thermostat, in addition to：When the water storage device
Water inlet water temperature be less than the delivery port water temperature of the thermostatic assembly, control the heater to open；When the water storage device
Water inlet water temperature is more than or equal to the delivery port water temperature of the thermostatic assembly, controls the heater to close.
According to one embodiment of present invention, the control method of above-mentioned thermostat, the water storage device is also detected
Water inlet water-carrying capacity, wherein, when the water inlet water-carrying capacity of the water storage device is less than first flow threshold value, heighten the constant temperature
The water inlet ratio of first water inlet of component, until the water inlet water-carrying capacity of the water storage device is more than or equal to described first-class
Measure threshold value.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the block diagram of thermostat according to an embodiment of the invention.
Fig. 2 is the block diagram of thermostat in accordance with another embodiment of the present invention.
Fig. 3 is the block diagram according to the thermostat of another embodiment of the invention.
Fig. 4 is the flow chart of the control method of thermostat according to embodiments of the present invention.
Reference：Water storage device 10, heater 11, triple valve 20, thermostatic assembly 30, first detection module 40, second
Detection module 50, control module 60, the 3rd detection module 70, the 4th detection module 80 and communication module 90.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.For letter
Change disclosure of the invention, hereinafter the part and setting of specific examples are described.Certainly, they are only example, and
Purpose does not lie in the limitation present invention.In addition, the present invention can in different examples repeat reference numerals and/or letter.It is this heavy
It is the relation between itself not indicating discussed various embodiments and/or setting for purposes of simplicity and clarity again.This
Outside, the invention provides various specific techniques and material examples, but those of ordinary skill in the art can be appreciated that
The applicable property of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it
" on " structure can include the first and second features and be formed as the embodiment that directly contacts, other feature shape can also be included
Into the embodiment between the first and second features, such first and second feature may not be direct contact.
In the description of the invention, it is necessary to explanation, unless otherwise prescribed and limit, term " installation ", " connected ",
" connection " should be interpreted broadly, for example, it may be mechanical connection or electrical connection or the connection of two element internals, can
To be to be joined directly together, can also be indirectly connected by intermediary, for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term.
The control of the thermostat, hot-water heating system and thermostat of proposition of the embodiment of the present invention described with reference to the accompanying drawings
Method processed.
Fig. 1 is the block diagram of thermostat according to an embodiment of the invention.As shown in figure 1, the thermostat
Including：Water storage device 10, triple valve 20 and thermostatic assembly 30.
Wherein, heater 11 is provided with water storage device 10, the water inlet of water storage device 10 is used for external hot water facility, threeway
The first end of valve 20 is connected with the water inlet of water storage device 10, the external feed pipe in the second end of triple valve 20, thermostatic assembly 30
First water inlet is connected with the delivery port of water storage device 10, and the second water inlet of thermostatic assembly 30 connects with the 3rd end of triple valve 20
Connect, the delivery port of thermostatic assembly 30 uses water end (W.E.) for external.
According to one embodiment of present invention, above-mentioned thermostat also includes：Second detection module 50 and control module
60, the second detection module 50 is arranged on the water inlet of water storage device 10 to detect the water inlet water temperature of water storage device 10, controls mould
Block 60 is connected with the detection module 50 of triple valve 20 and second respectively, control module 60 be used for obtain user setting leaving water temperature with
Temperature gap between the water inlet water temperature of water storage device 10, and according to the first end or second of temperature gap control triple valve 20
End connects with the 3rd end of triple valve 20.
Wherein, when water inlet water temperature is less than the leaving water temperature of user's setting and temperature gap is more than default temperature threshold
When, control module 60 controls the first end of triple valve 20 to be connected with the 3rd end；Otherwise, control module 60 controls the of triple valve 20
Two ends connect with the 3rd end.Wherein, default temperature threshold can be demarcated according to actual conditions.
Specifically, as shown in figure 1, thermostat has two water inlets and a delivery port, wherein, water storage device 10
Water inlet is connected as the water inlet of hot water of thermostat with the delivery port of hot water facility, and the second end of triple valve 20 is as constant temperature
The cold water inlet of device is connected with feed pipe, the delivery port of thermostatic assembly 30 as thermostat delivery port with water end (W.E.) phase
Even.
Generally by thermostat be arranged on near water end (W.E.) to realize hot water instant-heating, moreover, in thermostat
Water inlet of hot water is provided with the hot water facilities such as gas heater, electric heater, solar water heater or air-source water heater, permanent
Warm device is connected in series with hot water facility, and the hot water of hot water facility output enters water storage device from the water inlet of hot water of thermostat
10, after heated device 11 is heated to preset temperature, enter thermostatic assembly 30 from the first water inlet of thermostatic assembly 30, and from constant temperature
After the cold water mix that second water inlet of component 30 enters, it is flow to from the delivery port of thermostatic assembly 30 and uses water end (W.E.).
In order to avoid laying power source wire to heater 11, the power of heater 11 can be with smaller, for example, heater
11 power is less than 3kW.But because the power of heater 11 is smaller, it is difficult to by pipeline between hot water facility and thermostat
Interior cool water heating is to preset temperature, and therefore, embodiments of the invention to the control of triple valve 20 by avoiding in pipeline
Cold water fully enters water storage device 10.
Specifically, user sets leaving water temperature first, and when user is opened with water end (W.E.), the second detection module 50 is real-time
Detect the water inlet water temperature of water storage device 10.When the water inlet water temperature for the water storage device 10 that control module 60 obtains is set less than user
The leaving water temperature put, and the temperature gap between the leaving water temperature of user's setting and the water inlet water temperature of water storage device 10 is more than
During default temperature threshold, control module 60 controls the first end of triple valve 20 to be connected with the 3rd end, so that the big portion in pipeline
Divide cold water to enter thermostatic assembly 30 by triple valve 20, and the fraction cold water in pipeline is directly entered water storage device 10, protect
Water temperature in card water storage device 10 does not decline substantially, so as to ensure that it is pre- that the water in water storage device 10 can be heated to by heater 11
If temperature；Otherwise, control module 60 controls the second end of triple valve 20 to be connected with the 3rd end, it is ensured that the first of thermostatic assembly 30 enters
Hot water is entered at the mouth of a river, and the second water inlet enters cold water, ensures the delivery port water temperature of thermostatic assembly 30, meets user's request.So as to pass through
Control to triple valve solves the problems, such as the cold water in pipeline, so as to hot water that output water temperature is constant, meets the use of user
Water demand.
According to one embodiment of present invention, as shown in Fig. 2 above-mentioned thermostat also includes：First detection module 40,
First detection module 40 is arranged on the water outlet of thermostatic assembly 30 to detect the delivery port water temperature of thermostatic assembly 30, and first detects
Module 40 is connected with control module 60.
Also, above-mentioned thermostat also includes：3rd detection module 70 and the 4th detection module 80, the 3rd detection module
70 are arranged on the first water inlet of thermostatic assembly 30 to detect the first water inlet temperature of thermostatic assembly 30, the 4th detection module
80 are arranged on the second water inlet of thermostatic assembly 30 to detect the second water inlet temperature of thermostatic assembly 30, wherein, control mould
Block 60 is also connected with thermostatic assembly 30, the 3rd detection module 70 and the 4th detection module 80 respectively, and control module 60 is according to water outlet
Saliva temperature, the first water inlet temperature and the second water inlet temperature control thermostatic assembly 30 are with the first water inlet of regulating thermostatic component 30
The water inlet ratio of mouth and the second water inlet, so that the water demand of delivery port water temperature satisfaction water end (W.E.).
Specifically, user sets leaving water temperature first, and when user is opened with water end (W.E.), first detection module 40 detects
The delivery port water temperature of thermostatic assembly 30, meanwhile, the first water inlet temperature of the 3rd detection module 70 detection thermostatic assembly 30, the 4th
Detection module 80 detects the second water inlet temperature of thermostatic assembly 30.Used when the delivery port water temperature of the thermostatic assembly 30 of detection is more than
During the leaving water temperature that family is set, control module 60 is adjusted according to the first water inlet temperature of thermostatic assembly 30 and the second water inlet temperature
The first water inlet of thermostatic assembly 30 and the water inlet ratio of the second water inlet are saved, as reduced the first water inlet of thermostatic assembly 30
Water inlet ratio, while heighten the water inlet ratio of the second water inlet；If the delivery port water temperature of thermostatic assembly 30 is set less than user
Leaving water temperature, control module 60 is according to the first water inlet temperature and the second water inlet temperature adjustment constant temperature group of thermostatic assembly 30
First water inlet of part 30 and the water inlet ratio of the second water inlet, such as heighten the water inlet ratio of the first water inlet of thermostatic assembly 30
Example, while the water inlet ratio of the second water inlet is reduced, so that the water demand of delivery port water temperature satisfaction water end (W.E.).
Above-mentioned leaving water temperature regulation process is automatically performed by control module 60, is adjusted manually without user, and governing speed
Quickly, it disclosure satisfy that user's actual need.And the thermostat seamless can be attached with other hot water facilities, without control
Hot water facility, but pass through the first detection module 40 built in thermostat, the 3rd detection module 70 and the 4th detection module 80
Carry out adjusting water outlet temperature, to ensure effluent temperature constancy, instant-heating.
According to one embodiment of present invention, first detection module 40 is additionally operable to detect the delivery port current of thermostatic assembly 30
Amount, wherein, when delivery port water-carrying capacity is more than the first preset flow and delivery port water temperature is more than the first temperature threshold, or work as
When inlet water stream amount is more than the first preset flow and delivery port water temperature and is less than second temperature threshold value, the control constant temperature group of control module 60
The delivery port of part 30 is closed, wherein, the first temperature threshold is more than second temperature threshold value.
Wherein, the first preset flow, the first temperature threshold and second temperature threshold value can be demarcated according to actual conditions.
Specifically, first detection module 40 can be flow temperature sensor.When user is opened with water end (W.E.), the first inspection
Delivery port water temperature and delivery port water-carrying capacity that module 40 detects thermostatic assembly 30 are surveyed, is preset when delivery port water-carrying capacity is more than first
Flow and when delivery port water temperature is more than the first temperature threshold, control module 60 controls the delivery port of thermostatic assembly 30 to close, and avoids
Export a large amount of high-temperature-hot-water scald users；When delivery port water-carrying capacity is less than the second temperature more than the first preset flow and delivery port water temperature
When spending threshold value, control module 60 controls the delivery port of thermostatic assembly 30 to close, and avoids exporting a large amount of low-temperature cold water frostbite users, from
And ensure that the leaving water temperature of thermostat is suitable, will not both scald user, also will not frostbite user, ensure safe water outlet.
According to one embodiment of present invention, when the water inlet water temperature of water storage device 10 is less than the delivery port of thermostatic assembly 30
Water temperature, control module 60 control heater 11 to open；When the water inlet water temperature of water storage device 10 is more than or equal to thermostatic assembly 30
Delivery port water temperature, control module 60 control heater 11 close.
Specifically, heater 11 is provided with water storage device 10, the second detection module 50 detects water storage device 10 in real time
Water inlet water temperature, when the water inlet water temperature of water storage device 10 is less than the delivery port water temperature of thermostatic assembly 30, control module 60 is controlled
Heater 11 in water storage device 10 processed is opened, to improve the pipeline cold water temperature into water storage device 10, even if so as to ensure
There is the leaving water temperature that cold water does not interfere with thermostat yet between thermostat and hot water facility；When the water inlet of water storage device 10
Water temperature is more than or equal to the delivery port water temperature of thermostatic assembly 30, and control module 60 controls heater 11 to close.
According to one embodiment of present invention, the second detection module 50 is additionally operable to detect the water inlet current of water storage device 10
Amount, wherein, when the water inlet water-carrying capacity of water storage device 10 is less than first flow threshold value, control module 60 heightens thermostatic assembly 30
The first water inlet water inlet ratio, until the water inlet water-carrying capacity of water storage device 10 is more than or equal to first flow threshold value.
Wherein, first flow threshold value can be demarcated according to actual conditions.For example, first flow threshold value can be 3L/
min。
Specifically, the second detection module 50 can be temperature flow sensor.When the external hot water facility of thermostat
For gas heater when, control module 60 except the water storage device 10 detected according to the second detection module 50 water inlet water temperature come
The opening and closing of heater 11 are controlled, always according to the water inlet water-carrying capacity pair of the water storage device 10 of the second detection module 50 detection
The water inlet ratio of first water inlet of thermostatic assembly 30 is adjusted, to ensure that gas heater will not stop working.
Say, when the water inlet water-carrying capacity of water storage device 10 is less than first flow threshold value such as 3L/min, control module 60
The water inlet ratio of the first water inlet of thermostatic assembly 30 is heightened, until water inlet water-carrying capacity is more than or equal to first flow threshold value
3L/min, to ensure that gas heater will not be small and flame-out because of water-carrying capacity.In the process, because gas heater does not start
Light a fire, the water temperature in water storage device 10 reduces, and now control module 60 can be according to leaving water temperature the second water inlet of corresponding regulation
Water inlet ratio, to ensure that thermostat leaving water temperature meets user's request.
According to one embodiment of present invention, as shown in figure 3, above-mentioned thermostat also includes：Communication module 90, communication
Module 90 is connected with control module 60, and communication module 90 communicates wirelessly with intelligent terminal and passes through intelligent end to receive user
The control instruction sent is held, and the operational factor of thermostat is fed back into intelligent terminal.
Wherein, communication module 90 can be according to reality including communication mode, users such as radio frequency, WIFI, bluetooth and Zigbee
Border situation selects one or more communication modes to be communicated with intelligent terminal.When the multiple thermostats of user installation, user
Different leaving water temperatures can be set to each thermostat by intelligent terminal, and can be mutual between each thermostat
Communication, so as to which respective operational factor is fed back into intelligent terminal together, realize remote monitoring.
According to one embodiment of present invention, thermostatic assembly 30 is electronic thermostatic valve.Electronic thermostatic valve can be according to user
The leaving water temperature of setting, the delivery port water temperature of thermostat automatically adjust hot and cold water water inlet ratio, so as to accurately control delivery port
Water temperature.Also, using electronic thermostatic valve the whole volume of thermostat can be made to diminish, be easy to hide installation.
In summary, thermostat according to embodiments of the present invention, water storage device is interior to be provided with heater, and water storage device enters
The mouth of a river is used for external hot water facility, and the first end of triple valve and the water inlet of water storage device connect, and the second end of triple valve is external
Feed pipe, the first water inlet of thermostatic assembly and the delivery port of water storage device connect, the second water inlet of thermostatic assembly and threeway
The three-terminal link of valve, the delivery port of thermostatic assembly use water end (W.E.) for external, and the second detection module is arranged on entering for water storage device
To detect the water inlet water temperature of water storage device, control module is connected with triple valve and the second detection module respectively at the mouth of a river, controls mould
Block is used to obtain the temperature gap between the leaving water temperature of user's setting and the water inlet water temperature of water storage device, when water inlet water temperature
When the leaving water temperature and temperature gap set less than user is more than default temperature threshold, the first of control module control triple valve
End connects with the 3rd end, and otherwise the second end of control module control triple valve connects with the 3rd end.Therefore, the embodiment of the present invention
Thermostat solves the problems, such as pipeline cold water by the control to triple valve, ensures that the water temperature in water storage device does not decline substantially,
So as to ensure effluent temperature constancy, meet user's request.During due to being cold water in pipeline, only fraction cold water fills into water storage
Put, therefore the power of the heater in water storage device can be with smaller, without specially being spread to the heater in water storage device
If power line.
In addition, embodiments of the invention also proposed a kind of hot-water heating system, it includes above-mentioned thermostat and hot water is set
Standby, hot water facility can be electric heater, gas heater, solar water heater or Teat pump boiler.
The hot-water heating system can solve the problem that pipeline cold water problem, so as to ensure leaving water temperature perseverance by above-mentioned thermostat
It is fixed, meet user's request.During due to being cold water in pipeline, only fraction cold water enters water storage device, therefore in water storage device
The power of heater can be with smaller, without specially laying power line to the heater in water storage device.
Fig. 4 is the flow chart of the control method of thermostat according to embodiments of the present invention.Thermostat fills including water storage
To put, triple valve and thermostatic assembly, be provided with heater in water storage device, the water inlet of water storage device is used for external hot water facility, and three
The first end of port valve and the water inlet of water storage device connect, and the external feed pipe in the second end of triple valve, the first of thermostatic assembly enters
The delivery port of the mouth of a river and water storage device connects, the second water inlet of thermostatic assembly and the three-terminal link of triple valve, thermostatic assembly
Delivery port be used to external use water end (W.E.).
Specifically, as shown in figure 1, thermostat has two water inlets and a delivery port, wherein, water storage device enters
The mouth of a river is connected as the water inlet of hot water of thermostat with the delivery port of hot water facility, and the second end of triple valve is as thermostat
Cold water inlet be connected with feed pipe, the delivery port of thermostatic assembly is connected as the delivery port of thermostat with water end (W.E.).
Generally by thermostat be arranged on near water end (W.E.) to realize hot water instant-heating, moreover, in thermostat
Water inlet of hot water is provided with the hot water facilities such as gas heater, electric heater, solar water heater or air-source water heater, permanent
Warm device is connected in series with hot water facility, and the hot water of hot water facility output fills from the water inlet of hot water of thermostat into water storage
Put, after heated device is heated to preset temperature, enter thermostatic assembly from the first water inlet of thermostatic assembly, and from thermostatic assembly
After the cold water mix that second water inlet enters, it is flow to from the delivery port of thermostatic assembly and uses water end (W.E.).
As shown in figure 4, the control method of thermostat comprises the following steps：
S1, detect the water inlet water temperature of water storage device.
S2, the temperature gap between the leaving water temperature of user's setting and the water inlet water temperature of water storage device is obtained, and to temperature
Degree difference is judged.
S3, if water inlet water temperature is less than the leaving water temperature that user is set and temperature gap is more than default temperature threshold,
Then the first end of triple valve is controlled to be connected with the 3rd end.
S4, if water inlet water temperature is more than or equal to the leaving water temperature that user is set, or water inlet water temperature is less than user
The leaving water temperature and temperature gap of setting are less than or equal to default temperature threshold, then control the second end and the 3rd end of triple valve
Connection.
Specifically, in order to avoid giving heater laying power source wire, the power of heater can with smaller, for example, plus
The power of hot device is less than 3kW.But because the power of heater is smaller, it is difficult to by pipeline between hot water facility and thermostat
Interior cool water heating is to preset temperature, and therefore, embodiments of the invention are cold in pipeline to avoid by the control to triple valve
Water fully enters water storage device.
Specifically, as shown in figure 1, user sets leaving water temperature first, when user is opened with water end (W.E.), can pass through
Second detection module detects the water inlet water temperature of water storage device in real time.When the water inlet water temperature for the water storage device that control module obtains
The leaving water temperature set less than user, and the temperature between the leaving water temperature of user's setting and the water inlet water temperature of water storage device
When difference is more than default temperature threshold, the first end of control module control triple valve connects with the 3rd end, so that in pipeline
Most of cold water enters thermostatic assembly by triple valve, and the fraction cold water in pipeline is directly entered water storage device, ensures
Water temperature in water storage device does not decline substantially, so as to ensure that the water in water storage device can be heated to preset temperature by heater；
Otherwise, the second end of control module control triple valve connects with the 3rd end, it is ensured that and the first water inlet of thermostatic assembly enters hot water, the
Two water inlets enter cold water, ensure the delivery port water temperature of thermostatic assembly, meet user's request.
According to one embodiment of present invention, the control method of above-mentioned thermostat, in addition to：Detect thermostatic assembly
Delivery port water temperature, and the first water inlet temperature of thermostatic assembly is detected, and the second water inlet temperature of detection thermostatic assembly；Root
Enter according to delivery port water temperature, the first water inlet temperature and the second water inlet temperature control thermostatic assembly with the first of regulating thermostatic component
The mouth of a river and the water inlet ratio of the second water inlet, so that the water demand of delivery port water temperature satisfaction water end (W.E.).
Specifically, as shown in Fig. 2 user sets leaving water temperature first, when user is opened with water end (W.E.), can pass through
First detection module detects the delivery port water temperature of thermostatic assembly, meanwhile, detect the first of thermostatic assembly by the 3rd detection module
Water inlet temperature, and the second water inlet temperature by the 4th detection module detection thermostatic assembly.When the thermostatic assembly of detection
Delivery port water temperature when being more than the leaving water temperature that user is set, control module is according to the first water inlet temperature of thermostatic assembly and the
First water inlet of two water inlet temperature adjustment thermostatic assemblies and the water inlet ratio of the second water inlet, such as reduce the of thermostatic assembly
The water inlet ratio of one water inlet, while heighten the water inlet ratio of the second water inlet；If the delivery port water temperature of thermostatic assembly is less than
The leaving water temperature that user is set, control module are permanent according to the first water inlet temperature of thermostatic assembly and the second water inlet temperature adjustment
First water inlet of warm component and the water inlet ratio of the second water inlet, such as heighten the water inlet ratio of the first water inlet of thermostatic assembly
Example, while the water inlet ratio of the second water inlet is reduced, so that the water demand of delivery port water temperature satisfaction water end (W.E.).
Above-mentioned leaving water temperature regulation process is automatically performed by control module, is adjusted manually without user, and governing speed is very
It hurry up, disclosure satisfy that user's actual need.And the thermostat seamless can be attached with other hot water facilities, without controlling heat
Wetting system, but the first water inlet temperature and constant temperature group of the delivery port water temperature for the thermostatic assembly for passing through detection, thermostatic assembly
Second water inlet temperature of part carrys out adjusting water outlet temperature, to ensure effluent temperature constancy, instant-heating.
According to one embodiment of present invention, the control method of above-mentioned thermostat, the water outlet of thermostatic assembly is also detected
Saliva flow, wherein, when delivery port water-carrying capacity is more than the first preset flow and delivery port water temperature is more than the first temperature threshold, or
Person also controls thermostatic assembly when delivery port water-carrying capacity is more than the first preset flow and delivery port water temperature is less than second temperature threshold value
Delivery port close, wherein, the first temperature threshold is more than second temperature threshold value.
Specifically, as shown in Fig. 2 when user is opened with water end (W.E.), thermostatic assembly is detected by first detection module
Delivery port water temperature and delivery port water-carrying capacity, when delivery port water-carrying capacity is more than first more than the first preset flow and delivery port water temperature
During temperature threshold, the delivery port of control module control thermostatic assembly is closed, and avoids exporting a large amount of high-temperature-hot-water scald users；When going out
When inlet water stream amount is more than the first preset flow and delivery port water temperature and is less than second temperature threshold value, control module controls thermostatic assembly
Delivery port close, avoid exporting a large amount of low-temperature cold water frostbite users, so as to ensure that the leaving water temperature of thermostat is suitable, neither
User can be scalded, also will not frostbite user, ensure safe water outlet.
According to one embodiment of present invention, the control method of above-mentioned thermostat, in addition to：When entering for water storage device
Outlet water temperature is less than the delivery port water temperature of thermostatic assembly, and control heater is opened；Be more than when the water inlet water temperature of water storage device or
Equal to the delivery port water temperature of thermostatic assembly, control heater is closed.
Specifically, heater is provided with water storage device, detects the water inlet of water storage device in real time by the second detection module
Saliva temperature, when the water inlet water temperature of water storage device is less than the delivery port water temperature of thermostatic assembly, control module control water storage device
Interior heater is opened, to improve the pipeline cold water temperature into water storage device, even if so as to ensure that thermostat is set with hot water
There is the leaving water temperature that cold water does not interfere with thermostat yet between standby；When the water inlet water temperature of water storage device is more than or equal to constant temperature
The delivery port water temperature of component, control module control heater are closed.
According to one embodiment of present invention, the control method of above-mentioned thermostat, the water inlet of water storage device is also detected
Saliva flow, wherein, when the water inlet water-carrying capacity of water storage device is less than first flow threshold value, that heightens thermostatic assembly first enters
The water inlet ratio at the mouth of a river, until the water inlet water-carrying capacity of water storage device is more than or equal to first flow threshold value.
Wherein, first flow threshold value can be 3L/min.
Specifically, when the external hot water facility of thermostat is gas heater, control module is except according to second
The water inlet water temperature of the water storage device of detection module detection controls the opening and closing of heater, always according to the second detection module
The water inlet ratio of first water inlet of thermostatic assembly is adjusted the water inlet water-carrying capacity of the water storage device of detection, to ensure to fire
Gas water heater will not stop working.
Say, when the water inlet water-carrying capacity of water storage device is less than first flow threshold value such as 3L/min, control module is heightened
The water inlet ratio of first water inlet of thermostatic assembly, until water inlet water-carrying capacity is more than or equal to first flow threshold value 3L/min,
To ensure that gas heater will not be small and flame-out because of water-carrying capacity.In the process, due to gas heater not starting ignition, storage
Water temperature in water installations reduces, and now control module can correspond to the water inlet ratio of the second water inlet of regulation according to leaving water temperature, with
Ensure that thermostat leaving water temperature meets user's request.
In addition, in the control method of above-mentioned thermostat, radio frequency, WIFI, bluetooth and Zigbee can also be passed through
Deng the operational factor of one or more leaving water temperatures and thermostat for receiving user's setting in communication mode.Also, work as and use
When multiple thermostats are installed at family, user can set different leaving water temperatures by intelligent terminal to each thermostat, and
And can mutually be communicated between each thermostat, so as to which respective operational factor is fed back into intelligent terminal together, realize remote
Range monitoring.
The control method of thermostat according to embodiments of the present invention, the water inlet water temperature of water storage device is detected first, so
The temperature gap between the leaving water temperature of user's setting and the water inlet water temperature of water storage device is obtained afterwards, and temperature gap is carried out
Judge, if water inlet water temperature is less than the leaving water temperature that user is set and temperature gap is more than default temperature threshold, control
The first end of triple valve connects with the 3rd end, otherwise controls the second end of triple valve to be connected with the 3rd end.Therefore, the present invention is implemented
The control method of the thermostat of example solves the problems, such as pipeline cold water by the control to triple valve, ensures the water in water storage device
Temperature does not decline substantially, so as to ensure effluent temperature constancy, meets user's request.Meanwhile when in pipeline being cold water, only small portion
Cold water is divided to enter water storage device, therefore the power of the heater in water storage device can be with smaller, without to water storage device
Interior heater specially lays power line.
Any process or method described otherwise above description in flow chart or herein is construed as, and represents to include
Module, fragment or the portion of the code of the executable instruction of one or more the step of being used to realize specific logical function or process
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discuss suitable
Sequence, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system including the system of processor or other can be held from instruction
The system of row system, device or equipment instruction fetch and execute instruction) use, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass
Defeated program is for instruction execution system, device or equipment or the dress used with reference to these instruction execution systems, device or equipment
Put.The more specifically example (non-exhaustive list) of computer-readable medium includes following：Electricity with one or more wiring
Connecting portion (electronic installation), portable computer diskette box (magnetic device), random access memory (RAM), read-only storage
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium, which can even is that, to print the paper of described program thereon or other are suitable
Medium, because can then enter edlin, interpretation or if necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, software that multiple steps or method can be performed in memory and by suitable instruction execution system with storage
Or firmware is realized.If, and in another embodiment, can be with well known in the art for example, realized with hardware
Any one of row technology or their combination are realized：With the logic gates for realizing logic function to data-signal
Discrete logic, have suitable combinational logic gate circuit application specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method carries
Suddenly it is that by program the hardware of correlation can be instructed to complete, described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can also
That unit is individually physically present, can also two or more units be integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized in the form of software function module and as independent production marketing or in use, can also be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is by appended claims and its equivalent limits.
Claims (14)
- A kind of 1. thermostat, it is characterised in that including：Water storage device, the water storage device is interior to be provided with heater, and the water inlet of the water storage device is used for external hot water facility；Triple valve, the first end of the triple valve are connected with the water inlet of the water storage device, outside the second end of the triple valve Connect feed pipe；WithThermostatic assembly, the first water inlet of the thermostatic assembly are connected with the delivery port of the water storage device, the thermostatic assembly The second water inlet and the triple valve three-terminal link, the delivery port of the thermostatic assembly is used to external use water end (W.E.)；Second detection module, second detection module are arranged on the water inlet of the water storage device to detect the water storage device Water inlet water temperature；Control module, the control module are connected with the triple valve and second detection module respectively, the control module For obtaining the temperature gap between the leaving water temperature of user's setting and the water inlet water temperature of the water storage device, and according to described Temperature gap controls the first end of the triple valve or the second end to be connected with the 3rd end of the triple valve, wherein, when it is described enter When the leaving water temperature and the temperature gap that outlet water temperature is set less than the user are more than default temperature threshold, the control Module controls the first end of the triple valve to be connected with the 3rd end；Otherwise, the control module controls the second of the triple valve End connects with the 3rd end.
- 2. thermostat as claimed in claim 1, it is characterised in that also include：First detection module, the first detection module are arranged on the water outlet of the thermostatic assembly to detect the constant temperature group The delivery port water temperature of part, the first detection module are connected with the control module.
- 3. thermostat as claimed in claim 2, it is characterised in that also include：3rd detection module, the 3rd detection module are arranged on the first water inlet of the thermostatic assembly to detect the perseverance First water inlet temperature of warm component；4th detection module, the 4th detection module are arranged on the second water inlet of the thermostatic assembly to detect the perseverance Second water inlet temperature of warm component；Wherein, the control module also respectively with the thermostatic assembly, the 3rd detection module and the 4th detection module It is connected, the control module is according to the delivery port water temperature, the first water inlet temperature and the second water inlet temperature control The thermostatic assembly is made to adjust the water inlet ratio of the first water inlet of the thermostatic assembly and the second water inlet.
- 4. thermostat as claimed in claim 2, it is characterised in that the first detection module is additionally operable to detect the constant temperature The delivery port water-carrying capacity of component, wherein, when the delivery port water-carrying capacity be more than the first preset flow and the delivery port water temperature it is big When the first temperature threshold, or when the delivery port water-carrying capacity be more than first preset flow and the delivery port water temperature it is small When second temperature threshold value, the control module controls the delivery port of the thermostatic assembly to close, wherein, first temperature threshold Value is more than the second temperature threshold value.
- 5. thermostat as claimed in claim 1, it is characterised in thatWhen the water inlet water temperature of the water storage device is less than the delivery port water temperature of the thermostatic assembly, the control module controls institute State heater unlatching；When the water inlet water temperature of the water storage device is more than or equal to the delivery port water temperature of the thermostatic assembly, the control module The heater is controlled to close.
- 6. thermostat as claimed in claim 1, it is characterised in that second detection module is additionally operable to detect the water storage The water inlet water-carrying capacity of device, wherein,When the water inlet water-carrying capacity of the water storage device is less than first flow threshold value, the control module heightens the constant temperature group The water inlet ratio of first water inlet of part, until the water inlet water-carrying capacity of the water storage device is more than or equal to the first flow Threshold value.
- 7. such as the thermostat any one of claim 1-6, it is characterised in that also include：Communication module, the communication module are connected with the control module, and the communication module is carried out wirelessly with intelligent terminal Communicate to receive the control instruction that user is sent by the intelligent terminal.
- 8. thermostat as claimed in claim 1, it is characterised in that the thermostatic assembly is electronic thermostatic valve.
- 9. a kind of hot-water heating system, it is characterised in that set including the thermostat as any one of claim 1-8 and hot water Standby, the hot water facility is electric heater, gas heater, solar water heater or Teat pump boiler.
- 10. a kind of control method of thermostat, it is characterised in that the thermostat includes water storage device, triple valve and perseverance Warm component, the water storage device is interior to be provided with heater, and the water inlet of the water storage device is used for external hot water facility, the threeway The first end of valve is connected with the water inlet of the water storage device, the external feed pipe in the second end of the triple valve, the constant temperature group First water inlet of part is connected with the delivery port of the water storage device, the second water inlet and the triple valve of the thermostatic assembly Three-terminal link, the delivery port of the thermostatic assembly be used for it is external use water end (W.E.), the control method comprises the following steps：Detect the water inlet water temperature of the water storage device；The temperature gap between the leaving water temperature of user's setting and the water inlet water temperature of the water storage device is obtained, and to the temperature Degree difference is judged；If the water inlet water temperature is less than the leaving water temperature that the user is set and the temperature gap is more than default temperature Threshold value, then the first end of the triple valve is controlled to be connected with the 3rd end；If the water inlet water temperature is more than or equal to the leaving water temperature that the user is set, or the water inlet water temperature is less than The leaving water temperature and the temperature gap that the user is set are less than or equal to the default temperature threshold, then control described three Second end of port valve connects with the 3rd end.
- 11. the control method of thermostat as claimed in claim 10, it is characterised in that also include：The delivery port water temperature of the thermostatic assembly is detected, and detects the first water inlet temperature of the thermostatic assembly, and detection Second water inlet temperature of the thermostatic assembly；According to thermostatic assembly described in the delivery port water temperature, the first water inlet temperature and the second water inlet temperature control To adjust the water inlet ratio of the first water inlet of the thermostatic assembly and the second water inlet, so that the delivery port water temperature meets institute State the water demand with water end (W.E.).
- 12. the control method of thermostat as claimed in claim 11, it is characterised in that also detect going out for the thermostatic assembly Inlet water stream amount, wherein, when the delivery port water-carrying capacity is more than the first temperature more than the first preset flow and the delivery port water temperature When spending threshold value, or when the delivery port water-carrying capacity is less than the second temperature more than first preset flow and the delivery port water temperature When spending threshold value, the delivery port of the thermostatic assembly is also controlled to close, wherein, first temperature threshold is more than the second temperature Threshold value.
- 13. the control method of thermostat as claimed in claim 11, it is characterised in that also include：When the water storage device water inlet water temperature be less than the thermostatic assembly delivery port water temperature, control the heater to open Open；When the water storage device water inlet water temperature be more than or equal to the thermostatic assembly delivery port water temperature, control the heating Device is closed.
- 14. the control method of thermostat as claimed in claim 12, it is characterised in that also detect entering for the water storage device Inlet water stream amount, wherein,When the water inlet water-carrying capacity of the water storage device is less than first flow threshold value, the first water inlet of the thermostatic assembly is heightened The water inlet ratio of mouth, until the water inlet water-carrying capacity of the water storage device is more than or equal to the first flow threshold value.
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| CN106679188A (en) * | 2017-01-12 | 2017-05-17 | 浙江大学 | Water-saving intelligent temperature-control water heater based on PID adjustment and method thereof |
| CN114963512A (en) * | 2021-06-07 | 2022-08-30 | 青岛经济技术开发区海尔热水器有限公司 | Zero-cold-water heater and control method |
| CN114963511A (en) * | 2021-06-07 | 2022-08-30 | 青岛经济技术开发区海尔热水器有限公司 | Zero-cold-water heater and control method |
| CN113551427B (en) * | 2021-07-20 | 2022-07-12 | 珠海格力电器股份有限公司 | Control method and device of water heater, water heater and storage medium |
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Effective date of registration: 20230627 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 241009 Wan Chun East Road, East Wuhu economic and Technological Development Zone, Wuhu, Anhui Patentee before: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd. Patentee before: MIDEA GROUP Co.,Ltd. |