CN108224750A - A kind of drinking equipment heating system - Google Patents
A kind of drinking equipment heating system Download PDFInfo
- Publication number
- CN108224750A CN108224750A CN201810220453.3A CN201810220453A CN108224750A CN 108224750 A CN108224750 A CN 108224750A CN 201810220453 A CN201810220453 A CN 201810220453A CN 108224750 A CN108224750 A CN 108224750A
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- China
- Prior art keywords
- water
- unit
- water tank
- outlet
- warm
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
-
- 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
- F24H9/14—Arrangements for connecting different sections, e.g. in 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Devices For Dispensing Beverages (AREA)
Abstract
The invention discloses a kind of drinking equipment heating systems, belong to i.e. hot drink wetting system technical field, including：Former bucket, inside are equipped with water to be heated；Water tank, the first inlet unit of one end are connected with former bucket, and the other end of water tank is connected through the first water unit with the entrance of calandria, and calandria is equipped with first outlet and second outlet；Warm water water tank is connected through the second water unit with the entrance of calandria；Further include the first liquid level detection unit, the second liquid level detection unit and control unit.The present invention is by the instant heating type boiling water water yield produced up to 800mL/min, boiling water water yield is obviously improved, shorten the stand-by period of user's water intaking, and, the instant heating type warm water produced that the present invention takes is the warm water through cooling after boiled, so as to solve the pain spot that current immediate heating type boiler warm water is not opened, user can be allowed to drink and trust safe warm water.
Description
Technical field
The present invention relates to drinking equipment technical field more particularly to a kind of drinking equipment heating systems.
Background technology
In order to facilitate drinking-water, various boilers are developed, boiler is that a kind of utilization electric energy is converted to heat
The electric appliance of water can be heated, boiler is in various office spaces, public place, family life using very universal.Make at present
Many boilers be by cold water it is boiled after be stored in water tank for use, the time of heating up water is long, and inconvenience is brought to drinking-water.
Therefore, someone has invented the boiler of immediate heating type, is heated while flowing in flow during pouring, although reducing in this way
The drinking-water stand-by period, but there are still following shortcomings：1) it is slow, to go out water speed, in household water drinking class product maximum power
2200W(220V×
Under limitation 10A=2200W), normal-temperature water is heated to 97 DEG C from 20 DEG C, determines according to the big heating speed of the temperature difference is slow
Rule, water yield can only achieve 450mL/min, and the cold and hot water drinking machine according to specified in standard GB/T/T22090-2008 goes out
Water valve flow nominal value should be not less than 0.8L/min, and therefore, the boiler water yield of immediate heating type of the prior art is not met simultaneously
National standard；2), can not by it is instant heating type acquisition warm water (boiling water warm water after cooling), 3), energy-efficient performance it is bad.
Invention content
The technical issues of present invention is mainly solved in the presence of the prior art goes out that water speed is fast, energy so as to provide one kind
It is quickly obtained warm water and the drinking equipment heating system of good energy-conserving effect.
The above-mentioned technical problem of the present invention is mainly what is be addressed by following technical proposals：
Drinking equipment heating system provided by the invention, including：
Former bucket, inside are equipped with water to be heated；
Water tank, the first inlet unit of one end are connected with the former bucket, and the other end of the water tank is through first
Water unit is connected with the entrance of calandria, and the calandria is equipped with first outlet and second outlet, the first outlet
Through fetching water, solenoid valve is connected with external water outlet, and the second outlet is connected through the second inlet unit with warm water water tank
It connects；
Warm water water tank is connected through the second water unit with the entrance of the calandria；
First liquid level detection unit and the second liquid level detection unit are respectively used to detect the water tank and warm water water tank
Liquid level；
Control unit, it is single with first inlet unit, the second inlet unit, the first water unit, the second water outlet respectively
Member, the first liquid level detection unit are connected with the second liquid level detection unit, when the liquid level of the water tank is less than setting value, institute
Stating control unit controls first inlet unit to open, and the water in the former bucket is extracted into the water tank, works as institute
When stating the liquid level of warm water water tank less than setting value, described control unit controls first water unit and the second inlet unit
It opens, the water in the water tank is transported to after the calandria is boiled in the warm water water tank.
Further, the warm water water tank is arranged on the inside of the water tank, and the appearance of the warm water water tank
A heat exchange chamber, the first inlet unit of one end of the heat exchange chamber and institute are equipped between the inner surface of face and the water tank
It states former bucket to be connected, the other end of the heat exchange chamber is connected through the first water unit with the entrance of calandria.
Further, the inside of the warm water water tank is additionally provided with temperature detecting unit, the temperature detecting unit and institute
It states control unit to be connected, when the temperature that the temperature detecting unit is detected in the warm water water tank is higher than set temperature model
When enclosing, the controller controls the second inlet unit and the second water unit to close, when the temperature detecting unit detects institute
When stating the temperature in warm water water tank less than set temperature range, the controller controls the second inlet unit and the second water outlet single
Member is opened.
Further, ranging from 40 DEG C -50 DEG C of the set temperature.
Further, first inlet unit includes raw water water inlet pipe, raw water outlet pipe, raw water suction pump and heat exchange
Pipe is arranged, and one end of the raw water water inlet pipe is connected with the former bucket, and the other end is through the raw water suction pump and the heat
The one end for exchanging pipe row is connected, and the other end of the heat exchange tube bundle is connected with the raw water outlet pipe, and the raw water goes out
Water pipe is connected with one end of the heat exchange chamber, wherein, the heat exchange tube bundle is located at the inside of the warm water water tank.
Further, first water unit includes the first outlet pipe, the first water solenoid valve and suction pump, and described the
One end of one outlet pipe is connected with the other end of the heat exchange chamber, and the other end of first outlet pipe goes out water power through first
Magnet valve is connected with the entrance of the suction pump, and the outlet of the suction pump is connected with the entrance of the calandria.
Further, second water unit includes the second outlet pipe and the second water solenoid valve, second water outlet
One end of pipe is connected with the inside of the warm water water tank, the other end of second outlet pipe through the second water solenoid valve with
The entrance of the suction pump is connected.
Further, second inlet unit includes the second water inlet pipe and the second entering water electromagnetic valve, second water inlet
One end of pipe is connected with the second outlet, and the other end of second water inlet pipe is opened through the second entering water electromagnetic valve and the temperature
The inside of water tank is connected.
Further, first liquid level detection unit and the second liquid level detection unit are electronic float.
Further, the outside of the water tank is also wrapped on insulating layer.
The beneficial effects of the present invention are：By the pre-add thermal technology of calandria by the water in water butt it is boiled after, storage
In warm water water tank, when user takes away water, it can directly be extracted from warm water water tank through the second water unit after cooling
Warm water is heated, at this point, the temperature difference of warm water and boiling water is small, heating speed will faster, and water flow can just increase, this hair
The bright limitation for solving household water drinking class product maximum power reaches 97 DEG C of requirement with water temperature after 3 seconds, is produced by instant heating type
Boiling water water yield up to 800mL/min, boiling water water yield is obviously improved, shorten user water intaking stand-by period,
Moreover, the instant heating type warm water produced taken of the present invention be it is boiled after the warm water through cooling, opened so as to solve current immediate heating type
The pain spot that hydrophone warm water is not opened can allow user to drink and trust safe warm water.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structure diagram of the drinking equipment heating system of the present invention.
Specific embodiment
The preferred embodiment of the present invention is described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
As shown in fig.1, the drinking equipment heating system of the present invention, including：
Former bucket 1, inside are equipped with water to be heated；
Water tank 2, the first inlet unit of one end 3 are connected with former bucket 1, and the other end of water tank 2 is through the first water outlet
Unit 4 is connected with the entrance of calandria 5, and calandria 5 is equipped with first outlet 51 and second outlet 52, and first outlet 51 is through taking
Water solenoid valve 6 is connected with external water outlet 7, and second outlet 52 is connected through the second inlet unit 8 with warm water water tank 10；
Specifically, calandria 5 can be one of a variety of heating technique products common in the market, such as rare earth thick-film heating, quartz ampoule
Heating etc., and the calandria 5 can heat the water to set temperature according to demand.
Warm water water tank 10 is connected through the second water unit 9 with the entrance of calandria 5；
First liquid level detection unit 11 and the second liquid level detection unit 12 are respectively used to detection water tank 2 and warm water water
The liquid level of case 10；
Control unit 13, it is single with the first inlet unit 3, the second inlet unit 8, the water outlet of the first water unit 4, second respectively
First 9, first liquid level detection unit 11 is connected with the second liquid level detection unit 12, when the liquid level of water tank 2 is less than setting value,
Control unit 13 controls the first inlet unit 3 to open, and the water in former bucket 1 is extracted into water tank 2, when warm water water tank 10
Liquid level when being less than setting value, control unit 13 controls the first water unit 4 and the second inlet unit 8 to open, will be in water tank 2
The heated body 5 of water it is boiled after be transported in warm water water tank 10.In an embodiment of the invention, the liquid level of water tank 2 is set
Definite value and the level set value of warm water water tank 10 can be respectively the height of 1/2 and warm water water tank 10 of 2 height of water tank
1/2, certainly, in other embodiments of the invention, the level set value of water tank 2 and the level set of warm water water tank 10
Value can also reasonable set according to actual needs.
The present invention by the pre-add thermal technology of calandria 5 by the water in water butt 1 it is boiled after, be stored in warm water water tank 10
It is interior, when user takes away water, warm water after cooling can be directly extracted from warm water water tank 10 through the second water unit 9 and be added
Heat, at this point, the temperature difference of warm water and boiling water is small, heating speed will faster, and water flow can just increase, and the present invention solves house
With drinking-water class product maximum power limitation and water temperature reaches boiling water (such as after 3 seconds:97 DEG C) requirement, produced by instant heating type
Boiling water water yield is obviously improved up to 800mL/min, boiling water water yield, shortens the stand-by period of user's water intaking, and
And the instant heating type warm water produced taken of the present invention be it is boiled after the warm water through cooling, so as to solve current immediate heating type boiling water
The pain spot that device warm water is not opened can allow user to drink and trust safe warm water.
Specifically, warm water water tank 10 is arranged on the inside of water tank 2, and the outer surface of warm water water tank 10 and water tank
A heat exchange chamber 14 is equipped between 2 inner surface, the first inlet unit of one end 3 of heat exchange chamber 14 is connected with former bucket 1,
The other end of heat exchange chamber 14 is connected through the first water unit 4 with the entrance of calandria 5.In the present invention, warm water water tank 10
Heat Conduction Material may be used to make, the hot water to be added in former bucket 1 is delivered to the process of heat exchange chamber 14 through the first inlet unit 3
In, heat exchange can be carried out with the hot water in warm water water tank 10, so as to play the quick hot water reduced in warm water water tank 10
Water temperature shortens the acquisition time of warm water (boiling water warm water after cooling), and to be heated in the heat exchange chamber 14 after heat exchange
Coolant-temperature gage is promoted, and when being heated using calandria 5, can be significantly improved the efficiency of heating surface, be shortened heating time.
Specifically, the inside of warm water water tank 10 is additionally provided with temperature detecting unit 15, and temperature detecting unit 15 is single with control
Member 13 is connected, when the temperature that temperature detecting unit 15 is detected in warm water water tank 10 is higher than set temperature range, control
Device 13 controls the second inlet unit 8 and the second water unit 9 to close, when temperature detecting unit 15 is detected in warm water water tank 10
Temperature when being less than set temperature range, controller 13 controls the second inlet unit 8 and the second water unit 9 to open.This implementation
In example, such as：Ranging from 40 DEG C -50 DEG C of the set temperature of warm water in warm water water tank 10.When temperature detecting unit 15 detects
When being higher than 50 DEG C to the temperature in warm water water tank 10, illustrate that the water temperature in warm water water tank 10 is higher, at this moment close the in time
Two inlet units 8 and the second water unit 9, avoid boiling water from being delivered to again in warm water water tank 10, reduce warm water water tank 10
In have water cooling velocity.And when the temperature that temperature detecting unit 15 is detected in warm water water tank 10 is less than 40 DEG C, it says
Water temperature in bright warm water water tank 10 is relatively low, the second inlet unit 8 and the second water unit 9 is at this moment opened in time, by warm water
Water in water tank 10 is extracted into calandria 5 and is reheated, and is then transmitted back to warm water water tank 10 again, so as to improve warm water water
Water temperature in case 10.
In the present invention, the first inlet unit 3 includes raw water water inlet pipe 31, raw water outlet pipe 32, raw water suction pump 33 and heat
Pipe row 34 is exchanged, one end of raw water water inlet pipe 31 is connected with former bucket 1, and the other end is through raw water suction pump 33 and heat-exchange tube
One end of row 34 is connected, and the other end of heat exchange tube bundle 34 is connected with raw water outlet pipe 32, and raw water outlet pipe 32 is handed over heat
The one end for changing chamber 14 is connected, wherein, heat exchange tube bundle 34 is located at the inside of warm water water tank 10.When to be added in former bucket 1
During hot water is extracted through raw water suction pump 33 to heat exchange chamber 14, raw water is through in heat exchange tube bundle 34 and warm water water tank 10
Water carry out heat exchange after, then be transported in heat exchange chamber 14 through raw water outlet pipe 32, not only accelerate warm water water tank 10
The cooling of high temperature water, and the temperature of raw water (hot water to be added) is improved, reduce the energy consumption of calandria 5.
In the present invention, the first water unit 4 includes the first outlet pipe 41, the first water solenoid valve 42 and suction pump 43, the
One end of one outlet pipe 41 is connected with the other end of heat exchange chamber 14, and the other end of the first outlet pipe 41 is through the first water outlet electromagnetism
Valve 42 is connected with the entrance of suction pump 43, and the outlet of suction pump 43 is connected with the entrance of calandria 5.Second water unit 9
Including the second outlet pipe 91 and the second water solenoid valve 92, one end of the second outlet pipe 91 is connected with the inside of warm water water tank 10
It connects, the other end of the second outlet pipe 91 is connected through the second water solenoid valve 92 with the entrance of suction pump 43.Second inlet unit 8
Including the second water inlet pipe 81 and the second entering water electromagnetic valve 82, one end of the second water inlet pipe 81 is connected with second outlet 52, and second
The other end of water inlet pipe 81 is connected through the second entering water electromagnetic valve 82 with the inside of warm water water tank 10.In the present embodiment, first
Water solenoid valve 42, the second water solenoid valve 92 and the second entering water electromagnetic valve 82 are respectively used to the first outlet pipe 41, second of control
The break-make of 91 and second water inlet pipe 81 of outlet pipe.
Preferably, the first liquid level detection unit 11 and the second liquid level detection unit 12 are electronic float.Preferably, in order to
Heat insulation effect is improved, reduces personnel attrition, the outside of water tank 2 is also wrapped on insulating layer 16.
In conclusion advantages of the present invention is as follows：
1. by by the water in water tank 2 it is boiled after be back to again in warm water water tank 10 and be cooled to warm water, can allow
User, which drinks, trusts safe warm water, compare other drinking-water class product, the present invention in warm water be by boiled water cooling shape
Into the problem of dimension biology in water, pathogen, bacterium can be killed, halogenated hydrocarbons and exceeded chloroform content can obtain effective
It kills and improves.
2. using pre-warmed technology by raw water it is boiled after, be stored in warm water water tank 10, and constant temperature is to 40 DEG C -50
DEG C, when user takes away water, what calandria 5 extracted is the warm water in warm water water tank 10, and 40 DEG C -50 DEG C of water temperature is heated at this time
97 DEG C, the small heating speed of the temperature difference will faster, and water flow can just increase, and boiling water water yield compares other up to 800mL/min
Drinking-water class product, the present invention solves the limitation of household water drinking class product maximum power and water temperature reaches boiling water (such as after 3 seconds:97
DEG C) requirement, boiling water water yield is obviously improved up to 800mL/min, boiling water water yield, shortens user's water intaking
Stand-by period improves the comfort of user in use.
3. by the way that warm water water tank 10 is arranged in water tank 2, using heat exchange principle in warm water water tank 10
Hot water carries out fast cooling, and which shorten the stand-by period that user drinks warm water.
More than, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, it is any without
The change or replacement that creative work is expected are crossed, should be covered by the protection scope of the present invention.Therefore, protection of the invention
Range should be determined by the scope of protection defined in the claims.
Claims (10)
1. a kind of drinking equipment heating system, which is characterized in that including：
Former bucket, inside are equipped with water to be heated；
Water tank, the first inlet unit of one end are connected with the former bucket, and the other end of the water tank is through the first water outlet
Unit is connected with the entrance of calandria, and the calandria is equipped with first outlet and second outlet, and the first outlet is through taking
Water solenoid valve is connected with external water outlet, and the second outlet is connected through the second inlet unit with warm water water tank；
Warm water water tank is connected through the second water unit with the entrance of the calandria；
First liquid level detection unit and the second liquid level detection unit are respectively used to detect the liquid of the water tank and warm water water tank
Position；
Control unit, respectively with first inlet unit, the second inlet unit, the first water unit, the second water unit,
One liquid level detection unit is connected with the second liquid level detection unit, when the liquid level of the water tank is less than setting value, the control
Unit processed controls first inlet unit to open, and the water in the former bucket is extracted into the water tank, when the temperature
When the liquid level of boiling water water tank is less than setting value, described control unit controls first water unit and the second inlet unit to beat
It opens, the water in the water tank is transported to after the calandria is boiled in the warm water water tank.
2. drinking equipment heating system as described in claim 1, which is characterized in that the warm water water tank is arranged on the storage
The inside of water tank, and a heat exchange chamber, institute are equipped between the outer surface of the warm water water tank and the inner surface of the water tank
The first inlet unit of one end for stating heat exchange chamber is connected with the former bucket, and the other end of the heat exchange chamber goes out through first
Water unit is connected with the entrance of calandria.
3. drinking equipment heating system as claimed in claim 2, which is characterized in that the inside of the warm water water tank is additionally provided with
Temperature detecting unit, the temperature detecting unit are connected with described control unit, when the temperature detecting unit detects institute
When stating the temperature in warm water water tank higher than set temperature range, the controller controls the second inlet unit and the second water outlet single
Member is closed, described when the temperature that the temperature detecting unit is detected in the warm water water tank is less than set temperature range
Controller controls the second inlet unit and the second water unit to open.
4. drinking equipment heating system as claimed in claim 3, which is characterized in that ranging from 40 DEG C -50 of the set temperature
℃。
5. drinking equipment heating system as claimed in claim 2 or claim 3, which is characterized in that first inlet unit includes original
Water water inlet pipe, raw water outlet pipe, raw water suction pump and heat exchange tube bundle, one end of the raw water water inlet pipe and the former bucket phase
Connection, the other end is connected through the raw water suction pump with one end of the heat exchange tube bundle, the heat exchange tube bundle it is another
One end is connected with the raw water outlet pipe, and the raw water outlet pipe is connected with one end of the heat exchange chamber, wherein, it is described
Heat exchange tube bundle is located at the inside of the warm water water tank.
6. drinking equipment heating system as claimed in claim 2 or claim 3, which is characterized in that first water unit includes the
One outlet pipe, the first water solenoid valve and suction pump, one end of first outlet pipe and the other end phase of the heat exchange chamber
Connection, the other end of first outlet pipe is connected through the first water solenoid valve with the entrance of the suction pump, described to draw water
The outlet of pump is connected with the entrance of the calandria.
7. drinking equipment heating system as claimed in claim 6, which is characterized in that second water unit goes out including second
Water pipe and the second water solenoid valve, one end of second outlet pipe are connected with the inside of the warm water water tank, and described
The other end of two outlet pipes is connected through the second water solenoid valve with the entrance of the suction pump.
8. drinking equipment heating system as claimed in claim 7, which is characterized in that second inlet unit include second into
Water pipe and the second entering water electromagnetic valve, one end of second water inlet pipe are connected with the second outlet, second water inlet pipe
The other end be connected through the second entering water electromagnetic valve with the inside of the warm water water tank.
9. drinking equipment heating system as described in claim 1, which is characterized in that first liquid level detection unit and second
Liquid level detection unit is electronic float.
10. drinking equipment heating system as described in claim 1, which is characterized in that the outside of the water tank is also wrapped on
Insulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810220453.3A CN108224750A (en) | 2018-03-16 | 2018-03-16 | A kind of drinking equipment heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810220453.3A CN108224750A (en) | 2018-03-16 | 2018-03-16 | A kind of drinking equipment heating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108224750A true CN108224750A (en) | 2018-06-29 |
Family
ID=62658572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810220453.3A Pending CN108224750A (en) | 2018-03-16 | 2018-03-16 | A kind of drinking equipment heating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108224750A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111110047A (en) * | 2018-10-30 | 2020-05-08 | 青岛海尔施特劳斯水设备有限公司 | Warm water system and drinking water equipment |
| CN112471894A (en) * | 2020-11-19 | 2021-03-12 | 长虹美菱股份有限公司 | Energy-saving tea bar machine and control method thereof |
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| CN207006540U (en) * | 2017-05-23 | 2018-02-13 | 西北工业大学 | One kind saves Instant heating type boiler |
| CN208090934U (en) * | 2018-03-16 | 2018-11-13 | 上海六滴智能科技有限公司 | A kind of drinking equipment heating system |
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|---|---|---|---|---|
| US20120248141A1 (en) * | 2010-02-24 | 2012-10-04 | Purpose Co., Ltd. | Drinking water dispenser |
| WO2015085652A1 (en) * | 2013-12-11 | 2015-06-18 | 何杰恩 | Drinking-water dispenser capable of discharging quantitative and constant-temperature water and control method for drinking-water dispenser to discharge water |
| TW201621241A (en) * | 2014-12-05 | 2016-06-16 | ming-de Zhang | Successive water input water dispenser with increased heat exchange effect |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111110047A (en) * | 2018-10-30 | 2020-05-08 | 青岛海尔施特劳斯水设备有限公司 | Warm water system and drinking water equipment |
| CN112471894A (en) * | 2020-11-19 | 2021-03-12 | 长虹美菱股份有限公司 | Energy-saving tea bar machine and control method thereof |
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