CN103292536A - Water supply control system and method of automatic ice making machine - Google Patents
Water supply control system and method of automatic ice making machine Download PDFInfo
- Publication number
- CN103292536A CN103292536A CN2013101738704A CN201310173870A CN103292536A CN 103292536 A CN103292536 A CN 103292536A CN 2013101738704 A CN2013101738704 A CN 2013101738704A CN 201310173870 A CN201310173870 A CN 201310173870A CN 103292536 A CN103292536 A CN 103292536A
- Authority
- CN
- China
- Prior art keywords
- water
- ice maker
- temperature
- pipe
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/85—Food storage or conservation, e.g. cooling or drying
Abstract
The invention relates to a water supply control system and method of an automatic ice making machine. The water supply control system comprises a water case, a water pump, a water guide mechanism, an ice making mechanism and a controller which are connected sequentially, wherein the water guide mechanism is provided with a heating device and a temperature sensor; the controller is respectively connected to the water pump, the heating device and the temperature sensor; the controller controls the operation of the ice making machine according to a temperature difference signal collected by the temperature sensor. The control method of the water supply control system is characterized in that the temperature difference signal of the water guide mechanism is collected by the temperature sensor so as to detect whether the water case is in a state of being lack of water; when the water case is in the state of being lack of water, the controller controls the ice making machine to stop operating, and can perform water adding prompt. According to the invention, the state of being lack of water for the water case is detected and controlled through collecting the temperature difference, the idle rotation of the ice making mechanism is prevented; the energy consumption is lowered effectively; the service life of the ice making machine is prolonged; water adding is prompted at the first time after water is lack; and the ice making capability of the ice making mechanism is improved.
Description
Technical field
The present invention relates to the ice machine technical field, more specifically, relate to a kind of water management system and control method of automatic ice maker.
Background technology
The need of work water source supply of ice machine normally is provided with the water box in the ice machine water supply system in the prior art, utilizes water pump that water in the water box is transported to ice machine and carries out ice making.Have now in the ice machine that utilizes water pump water supply, roughly there are two types, a kind of is that the water level detecting and controlling device is not set, after water used up in the water box, ice machine operation as usual dallied, and the user does not know that the water box is exsiccosis yet, add water up to artificial inspection, this kind mode causes the extra energy consumption of ice machine idling products, and ice machine idle running reduces its service life, can not in time add the ice making capacity that water has reduced ice machine after the lack of water; Another is to adopt the water level control mode, by mechanical ball-cock assembly control is set in the water box, but this ball-cock assembly control mode need take the water box than large space, and long-term floating ball float is also unhygienic in the drinking water, controlling sensitivity in addition influenced by ball float and magneto sensor installation accuracy, uniformity is relatively poor, controls inaccurate.
Summary of the invention
The technical problem to be solved in the present invention is the water management system that a kind of automatic ice maker is provided at the deficiencies in the prior art.This water management system can simple and directly effectively carry out Intelligent Measurement, control, prevents mechanism for ice maker idle running, cuts down the consumption of energy.
The present invention also provides the control method of the water management system of above-mentioned automatic ice maker.
For solving the problems of the technologies described above, a first aspect of the present invention technical scheme is as follows:
A kind of water management system of automatic ice maker, comprise the water box, water pump, water distributor, the mechanism for ice maker that connect successively, also comprise controller, be provided with heater and temperature sensor on the described water distributor, described controller is connected to water pump, heater and temperature sensor respectively, and the temperature signal that controller is gathered according to temperature sensor is controlled the work of mechanism for ice maker.
In further preferred version, the water management system of above-mentioned automatic ice maker also comprises display unit, and the temperature signal control display unit work that described controller is gathered according to temperature sensor shows to add the water prompting.
In further preferred version, described water distributor comprises pipe fitting and the water pipe that is communicated with pipe fitting, and described pipe fitting is connected with water pump, and described water pipe is connected to mechanism for ice maker.
In further preferred version, described heater is the heater strip that is wrapped in pipe outer wall, and described temperature sensor is pasted on pipe outer wall.
In further preferred version, described water pipe periphery is provided with shell, between shell and the water pipe certain clearance is arranged, and is used for fill insulant material.Water pipe is played insulation effect.
In further preferred version, described water pipe is the metal material pipe, and is better to temperature sensitivity.
The technical scheme of second aspect present invention is:
The control method of the water management system of above-mentioned automatic ice maker is provided, gathers the temperature signal of water distributor by temperature sensor, detecting whether the water box is exsiccosis, when the water box in exsiccosis following time, controller control mechanism for ice maker stops ice making work.
In further preferred version, described water distributor comprises pipe fitting and the water pipe that is communicated with pipe fitting, described pipe fitting is connected with water pump, described water pipe is connected to mechanism for ice maker, described heater is the heater strip that is wrapped in pipe outer wall, described temperature sensor is pasted on pipe outer wall, and described control method comprises the steps:
S1. controller control heater strip is started working, and starts working through controller control water pump behind the certain hour and draws water, and the temperature t that the simultaneous temperature sensor is gathered water pipe passes to controller for 1 degree centigrade;
S2. pump working S is after time second, and the temperature t that temperature sensor is gathered water pipe passes to controller for 2 degrees centigrade;
S3. when the difference of temperature t 1 and t2 during more than or equal to the temperature difference X that sets, for water state is arranged, mechanism for ice maker carries out ice making work; When the difference of temperature t 1 and t2 during less than the temperature difference X that sets, be exsiccosis, controller control mechanism for ice maker stops ice making work.
In further preferred version, described water management system also comprises display unit, among the described control method step S3, when the difference of temperature t 1 and t2 during less than the temperature difference X that sets, be exsiccosis, the work of described controller control display unit adds the water prompting to the water box.
Compared with prior art, the beneficial effect of technical solution of the present invention is:
1, the present invention detects control by gathering the temperature difference to water box exsiccosis, prevents mechanism for ice maker idle running, effectively cuts down the consumption of energy, and improves the life-span of mechanism for ice maker.
2, control device of the present invention is not arranged on the water box, does not take water box space, and is pollution-free to drinking water.
3, water box of the present invention takes out to clean and install does not influence this control system, and technology is simple, control accuracy is high, stable, safe and reliable.
4, the present invention points out and adds water the very first time after lack of water, improves the ice making capacity of mechanism for ice maker.
Description of drawings
Fig. 1 is the structural representation of the water management system specific embodiment of automatic ice maker of the present invention.
Fig. 2 is the temperature curve schematic diagram of water pipe when in the water management system of the present invention water state being arranged.
Fig. 3 is the temperature curve schematic diagram of water pipe during the exsiccosis state in the water management system of the present invention.
Fig. 4 is the control method flow chart of water management system of the present invention.
The specific embodiment
Describe embodiments of the invention in detail below in conjunction with accompanying drawing, in the accompanying drawing from start to finish identical or similar label indicate identical or similar element or the element with identical or similar functions.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
The present invention discloses a kind of water management system of automatic ice maker, comprise the water box 2, water pump 4, water distributor, mechanism for ice maker and the controller 11 that connect successively, be provided with heater and temperature sensor 9 on the water distributor, controller 11 is connected to water pump 4, heater 8 and temperature sensor 9 respectively, and the temperature signal that controller 11 is gathered according to temperature sensor 9 is controlled the work of mechanism for ice maker.
As Fig. 1, be the schematic diagram of a kind of specific embodiment of the water management system of automatic ice maker of the present invention.Among the figure, water distributor comprises pipe fitting 5 and the water pipe 10 that is communicated with pipe fitting 5, mechanism for ice maker comprises ice machine 12 and ice chest 13, pipe fitting 5 is connected with water pump 4, water pipe 10 is connected to ice machine 12, wherein, water box 2 is water storage device, which is provided with lid 3, water pump 4 is power set, it draws water to ice machine 12 water supply ice makings by controller 11 controls, pipe fitting 5 is water guider, current are directed into ice making in the ice machine 12 through water pipe 10, heater 8 adopts heater strip, be wrapped in water pipe 10 outer walls, temperature sensor 9 sticks on water pipe 10 outer walls, shell 7 is in the periphery of water pipe 10, and between the water pipe 10 certain clearance arranged, and is used for fill insulant material, water pipe 10 is played insulation effect, heater strip is kept water pipe 10 temperature in certain stability range to water pipe 10 heating, and anti-antipriming pipe 10 freezes, temperature sensor 9 is for detection of the temperature of water pipe 10 correspondences, controller 11 is installed on the casing of refrigerating plant 1, connects water pump 4 respectively by lead, heater strip 8 and temperature sensor 9, miscellaneous part all is assemblied in the refrigerating plant 1.
Operation principle of the present invention is, after ice making begins, controller 11 control heater strips are started working, the temperature that simultaneous temperature sensor 9 is gathered water pipe 10 correspondences passes to controller 11, controller 11 control water pumps 4 are started working and are drawn water behind the process certain hour, water pump 4 times of pumping are by controller 11 controls, the end back controller that draws water is judged the conduit temperature of gathering before and after drawing water, when the temperature difference when setting the X value, heater strip 8 and ice machine 12 stop ice making work, otherwise work on, at this moment, current carry out ice making through pipe fitting 5 water pipe 10 of flowing through to ice machine 12, move ice after the ice making in ice chest 13.
Before current flow through water pipe 10, heater strip 8 certain hour of having worked was so water pipe 10 temperature maintenance are in higher temperature, after water pump 4 starts water supply, because coolant-temperature gage is very low, after water flows through water pipe 10, water pipe 10 temperature can very fast attenuating, and this variations in temperature is given controller 11 by temperature sensor 9 conduction; After the water of water box 2 was exhausted lack of water, water pump 4 normally drew water, and water pump 4 is worked but do not had water to flow through water pipe 10 at this moment, and corresponding water pipe 10 temperature almost do not change, and the temperature sensor 9 collections temperature of correspondence at this moment pass to controller 11.
Fig. 2 is for there being the temperature curve schematic diagram of water state downcomer.S1-s2 time interval is that water pump begins and stop the corresponding time of back, also is the temperature variation curve of water water pipe when flowing through water pipe, can see the colder current temperature gap △ t(△ t=t1-t2 of water pipe correspondence later) difference is bigger.
Fig. 3 is the temperature curve schematic diagram of exsiccosis downcomer correspondence.S1-s2 time interval is that water pump begins and stop the back time, because water box lack of water does not have water to flow through water pipe, so the temperature gap △ t(△ t=t1-t2 of water pipe correspondence) difference is very little almost nil.
According to the above difference that △ t numerical value under water state and the exsiccosis is arranged, temperature sensor 9 collecting temperature signals, 11 couples of △ t judge by controller, mechanism for ice maker is controlled, if △ t then is exsiccosis less than the temperature difference of setting, mechanism for ice maker, heater are suspended or closing control, ice machine 12 is out of service, and heater strip 8 stops heating; If △ t does not then close mechanism for ice maker more than or equal to the temperature difference X that sets, ice machine 12 continues operation.
By above control system, can effectively prevent the anhydrous idle running of ice machine.
The present invention can also arrange the display unit (not shown), when the temperature signal that controller 11 is gathered according to temperature sensor 9 is judged as exsiccosis, the work of control display unit, such as can be bright by control " add water prompting " lamp, easily so just can point out the user that the water box is added water.
To sum up; the control method of the water management system of automatic ice maker of the present invention is to gather the temperature signal of water distributor by temperature sensor 9; to detect whether the water box is exsiccosis; when the water box in exsiccosis following time; controller control mechanism for ice maker and heater suspend or quit work, and can add the water prompting simultaneously.
As shown in Figure 4, the schematic flow sheet for control method comprises the steps:
Step 1. controller control heater strip begins heating work, starts working through controller control water pump behind the certain hour and draws water, and the temperature t that simultaneous temperature sensor 9 is gathered water pipe passes to controller 11 for 1 degree centigrade.
Step 2. water pump 4 work S are after time second, and the temperature t that temperature sensor 9 is gathered water pipe 10 passes to controller 11 for 2 degrees centigrade.
Step 3. is when the difference of temperature t 1 and t2 during more than or equal to the temperature difference X that sets, and for water state is arranged, mechanism for ice maker carries out ice making work; When the difference of temperature t 1 and t2 during less than the temperature difference X that sets, be exsiccosis, controller control mechanism for ice maker quits work, and heater strip stops heating; The work of controller control display unit adds the water prompting to the water box.
To sum up, compare with existing other control method, the present invention can prevent ice machine idle running under the anhydrous state, cuts down the consumption of energy, and improves the ice machine life-span; The built-in float control mode of traditional relatively water box, the present invention is external because of parts, have pollution-free, precision is high, advantage such as safe and reliable.
Obviously, the above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.All any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the protection domain of claim of the present invention.
Claims (9)
1. the water management system of an automatic ice maker, comprise the water box, water pump, water distributor, the mechanism for ice maker that connect successively, it is characterized in that, also comprise controller, be provided with heater and temperature sensor on the described water distributor, described controller is connected to water pump, heater and temperature sensor respectively, and the temperature signal that controller is gathered according to temperature sensor is controlled the work of mechanism for ice maker.
2. the water management system of automatic ice maker according to claim 1 is characterized in that, also comprises display unit, and the temperature signal control display unit work that described controller is gathered according to temperature sensor shows to add the water prompting.
3. the water management system of automatic ice maker according to claim 1 is characterized in that, described water distributor comprises pipe fitting and the water pipe that is communicated with pipe fitting, and described pipe fitting is connected with water pump, and described water pipe is connected to mechanism for ice maker.
4. the water management system of automatic ice maker according to claim 3 is characterized in that, described heater is the heater strip that is wrapped in pipe outer wall, and described temperature sensor is pasted on pipe outer wall.
5. the water management system of automatic ice maker according to claim 4 is characterized in that, described water pipe periphery is provided with shell, between shell and the water pipe certain clearance is arranged, and is used for fill insulant material.
6. the water management system of automatic ice maker according to claim 3 is characterized in that, described water pipe is the metal material pipe.
7. the control method of the water management system of an automatic ice maker according to claim 1, it is characterized in that, gather the temperature signal of water distributor by temperature sensor, to detect whether the water box is exsiccosis, when the water box in exsiccosis following time, controller control mechanism for ice maker stops ice making work.
8. the control method of the water management system of automatic ice maker according to claim 7, it is characterized in that, described water distributor comprises pipe fitting and the water pipe that is communicated with pipe fitting, described pipe fitting is connected with water pump, described water pipe is connected to mechanism for ice maker, described heater is the heater strip that is wrapped in pipe outer wall, and described temperature sensor is pasted on pipe outer wall, and described control method comprises the steps:
S1. controller control heater strip is started working, and starts working through controller control water pump behind the certain hour and draws water, and the temperature t that the simultaneous temperature sensor is gathered water pipe passes to controller 11 for 1 degree centigrade;
S2. pump working S is after time second, and the temperature t that temperature sensor is gathered water pipe passes to controller for 2 degrees centigrade;
S3. when the difference of temperature t 1 and t2 during more than or equal to the temperature difference X that sets, for water state is arranged, mechanism for ice maker carries out ice making work; When the difference of temperature t 1 and t2 during less than the temperature difference X that sets, be exsiccosis, controller control mechanism for ice maker stops ice making work.
9. the control method of the water management system of automatic ice maker according to claim 7, it is characterized in that, described water management system also comprises display unit, among the described control method step S3, when the difference of temperature t 1 and t2 during less than the temperature difference X that sets, be exsiccosis, the work of described controller control display unit adds the water prompting to the water box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310173870.4A CN103292536B (en) | 2013-05-10 | 2013-05-10 | The water management system of a kind of automatic ice maker and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310173870.4A CN103292536B (en) | 2013-05-10 | 2013-05-10 | The water management system of a kind of automatic ice maker and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103292536A true CN103292536A (en) | 2013-09-11 |
| CN103292536B CN103292536B (en) | 2016-06-29 |
Family
ID=49093819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310173870.4A Active CN103292536B (en) | 2013-05-10 | 2013-05-10 | The water management system of a kind of automatic ice maker and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103292536B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571229A (en) * | 2016-02-22 | 2016-05-11 | 珠海格力电器股份有限公司 | Ice machine, control method thereof and control device thereof |
| CN106546005A (en) * | 2016-11-24 | 2017-03-29 | 广东美的暖通设备有限公司 | Protect control device, method and the little water dispenser unit of little water dispenser unit |
| CN110081648A (en) * | 2019-05-30 | 2019-08-02 | 罗优才 | A kind of temperature, the adjustable heating-cooling equipment of humidity |
| CN111664625A (en) * | 2019-03-08 | 2020-09-15 | 松下电器研究开发(苏州)有限公司 | Refrigerator with a door |
| CN112378135A (en) * | 2020-11-17 | 2021-02-19 | 常熟市福王制冷器材有限公司 | Control system of novel ice maker |
| CN113959157A (en) * | 2021-10-20 | 2022-01-21 | 海信（山东）冰箱有限公司 | Refrigerator, ice maker system and abnormal state monitoring method thereof |
| CN115325765A (en) * | 2021-05-10 | 2022-11-11 | 青岛海尔电冰箱有限公司 | Control method and control device of ice making device and refrigerator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4075863A (en) * | 1976-08-23 | 1978-02-28 | Storm King Products, Inc. | Freeze-harvest control system for a tubular ice maker |
| GB2304880B (en) * | 1995-08-30 | 1999-12-08 | Scotsman Group Inc | Method for preventing formation of ice slush in an ice maker |
| JP2004233009A (en) * | 2003-01-31 | 2004-08-19 | Miura Co Ltd | Operation control method of ice storage type water cooler |
| JP2007255804A (en) * | 2006-03-24 | 2007-10-04 | Hitachi Appliances Inc | Refrigerator |
| CN203274430U (en) * | 2013-05-10 | 2013-11-06 | 海信容声(广东)冰箱有限公司 | Water supplying and controlling system for automatic ice machine |
-
2013
- 2013-05-10 CN CN201310173870.4A patent/CN103292536B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4075863A (en) * | 1976-08-23 | 1978-02-28 | Storm King Products, Inc. | Freeze-harvest control system for a tubular ice maker |
| GB2304880B (en) * | 1995-08-30 | 1999-12-08 | Scotsman Group Inc | Method for preventing formation of ice slush in an ice maker |
| JP2004233009A (en) * | 2003-01-31 | 2004-08-19 | Miura Co Ltd | Operation control method of ice storage type water cooler |
| JP2007255804A (en) * | 2006-03-24 | 2007-10-04 | Hitachi Appliances Inc | Refrigerator |
| CN203274430U (en) * | 2013-05-10 | 2013-11-06 | 海信容声(广东)冰箱有限公司 | Water supplying and controlling system for automatic ice machine |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571229A (en) * | 2016-02-22 | 2016-05-11 | 珠海格力电器股份有限公司 | Ice machine, control method thereof and control device thereof |
| CN106546005A (en) * | 2016-11-24 | 2017-03-29 | 广东美的暖通设备有限公司 | Protect control device, method and the little water dispenser unit of little water dispenser unit |
| CN106546005B (en) * | 2016-11-24 | 2019-04-02 | 广东美的暖通设备有限公司 | Protect the control equipment, method and small water dispenser unit of small water dispenser unit |
| CN111664625A (en) * | 2019-03-08 | 2020-09-15 | 松下电器研究开发(苏州)有限公司 | Refrigerator with a door |
| CN111664625B (en) * | 2019-03-08 | 2022-05-31 | 松下电器研究开发(苏州)有限公司 | Refrigerator with a door |
| CN110081648A (en) * | 2019-05-30 | 2019-08-02 | 罗优才 | A kind of temperature, the adjustable heating-cooling equipment of humidity |
| CN110081648B (en) * | 2019-05-30 | 2023-11-21 | 罗优才 | Refrigerating and heating equipment with adjustable temperature and humidity |
| CN112378135A (en) * | 2020-11-17 | 2021-02-19 | 常熟市福王制冷器材有限公司 | Control system of novel ice maker |
| WO2022237725A1 (en) * | 2021-05-10 | 2022-11-17 | 青岛海尔电冰箱有限公司 | Ice making device control method and control apparatus, and refrigerator |
| CN115325765A (en) * | 2021-05-10 | 2022-11-11 | 青岛海尔电冰箱有限公司 | Control method and control device of ice making device and refrigerator |
| CN115325765B (en) * | 2021-05-10 | 2023-11-07 | 青岛海尔电冰箱有限公司 | Control method and control device of ice making device and refrigerator |
| WO2023065591A1 (en) * | 2021-10-20 | 2023-04-27 | 海信（山东）冰箱有限公司 | Refrigerator, ice maker system and abnormal-state monitoring method therefor |
| CN113959157A (en) * | 2021-10-20 | 2022-01-21 | 海信（山东）冰箱有限公司 | Refrigerator, ice maker system and abnormal state monitoring method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103292536B (en) | 2016-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203274430U (en) | Water supplying and controlling system for automatic ice machine | |
| CN103292536A (en) | Water supply control system and method of automatic ice making machine | |
| CN102213489B (en) | A kind of method and system realizing gas heater multi-machine parallel connection | |
| CN101957053B (en) | Water heater control method | |
| CN202757269U (en) | Two-level freeze-proof gas water heater | |
| CN101929056A (en) | Method for monitoring water-charging process and water-discharging process of washing machine | |
| CN106121984A (en) | The low stop frequency control method of water pump based on Pressure Switch Sensor and water pump | |
| CN102607784A (en) | Method for detecting water leakage of tap water pipeline | |
| CN108548349B (en) | Defrosting control system of intelligent heat pump | |
| CN102734937B (en) | Control method of water heater system and water heater utilizing control method | |
| CN205227501U (en) | Intelligence caliduct device based on singlechip | |
| CN201382543Y (en) | Instant heating type electric water heater | |
| CN105759858A (en) | Control method of food processing machine | |
| CN203642537U (en) | Automatic leakage warning device of solar water heating system | |
| CN102829563A (en) | Automatic water supplying and breaking system of solar water heater | |
| CN102734941A (en) | Automatic judgement method for pipe explosion and water leakage of solar water heating system | |
| CN210321816U (en) | Water level automatic metering wireless control system | |
| CN201421213Y (en) | Pipeline evacuating and water saving system of solar water heater | |
| CN202853161U (en) | Automatic water supplying and water stopping system of solar water heater | |
| CN206944446U (en) | A kind of heating and domestic water electric heating equipment | |
| CN202196342U (en) | Simple water tank water level control system | |
| CN101900439A (en) | Solar water heater | |
| CN204460926U (en) | Instant freezer ice layer thickness sensor and instant freezer | |
| CN204574524U (en) | A kind of hot tank anti-dry burning device | |
| CN113739239B (en) | Intelligent heat supply system management and control system and control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |