CN209639243U - A kind of intelligence electric heating auxiliary system - Google Patents

A kind of intelligence electric heating auxiliary system Download PDF

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Publication number
CN209639243U
CN209639243U CN201920156292.6U CN201920156292U CN209639243U CN 209639243 U CN209639243 U CN 209639243U CN 201920156292 U CN201920156292 U CN 201920156292U CN 209639243 U CN209639243 U CN 209639243U
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CN
China
Prior art keywords
water
boiler
electric heating
electric heater
water tank
Prior art date
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Expired - Fee Related
Application number
CN201920156292.6U
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Chinese (zh)
Inventor
曹金园
张银燕
张雨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Karamay Zhengcheng Co Ltd
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Karamay Zhengcheng Co Ltd
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Filing date
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Priority to CN201920156292.6U priority Critical patent/CN209639243U/en
Application granted granted Critical
Publication of CN209639243U publication Critical patent/CN209639243U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses a kind of intelligent electric heating auxiliary systems, including electrical auxiliary heater and controller assemblies, the electrical auxiliary heater includes electric heater main body, the electric heater main body is equipped with electric heater inlet pipeline and electric heater outlet pipeline, the electric heater inlet pipeline is connected with the outlet pipeline of the reservoir, and the electric heater outlet pipeline is connected with the water tank;The controller assemblies include controller and data acquisition module, control of the information realization that the controller is detected according to the data acquisition module to water temperature and water level in the boiler, the electric heater main body, the water tank.The utility model is by the way that intelligent electric heating auxiliary system to be parallel on boiler heating system, when in production process being the heating of single reaction kettle without starting trouble, heating purpose can rapidly and efficiently be reached by opening intelligent electric heating auxiliary system, can meet the small-scale use and large-scale use of Devices in Workshop respectively.

Description

A kind of intelligence electric heating auxiliary system
Technical field
The utility model relates to electric-heating technology field, more particularly to a kind of intelligent electric heating auxiliary system.
Background technique
Often be applied to reaction kettle equipment in chemical field, and reaction kettle heating be in chemical products production must not It can lack.Currently, chemical plant can configure a set of boiler heating system mostly, which is made of boiler and Inlet and outlet water pipeline, Heating installation needed for pipeline is parallel to the reaction kettle circulator and production and living in each workshop, starting trouble heat medium water, The valve for opening circulation and related pipeline can provide required thermal energy.But found after long-term production is run, because with Relatively fewer to reaction kettle heating process, boiler frequency of use is low, and 2-3 talent's starting is primary, and boiler heating speed is slow, cavity Greatly, cause thermal losses serious, be not appropriate for equipment and heat use on a small scale.
Moreover, in general, traditional heating mode such as combustion gas heating and coal_heating has at high cost, noise, pollution The problems such as, the especially serious problem of thermal losses, the remoter thermal losses of distance is bigger, so that the heating cost of unit area occupies always It is high not under.Further, when summer needs to produce heating, special starting trouble is needed, hot weather makes boiler room temperature more Height very influences the operation to boiler.
Therefore, how the heating system of existing equipment is improved, makes it that production efficiency both can be improved, saved Cost, and the problem of can satisfy the heating requirements in production process, become for those skilled in the art's urgent need to resolve.
Utility model content
In view of this, the present invention provides a kind of intelligent electric heating auxiliary systems.
To achieve the goals above, the utility model adopts the following technical solution:
A kind of intelligence electric heating auxiliary system, for realizing the auxiliary heating to boiler heating system, the boiler heat supplying System includes boiler, reservoir, water tank, and the outlet pipeline of the reservoir is equipped with water pump, and the boiler is equipped with boiler Inlet pipeline and boiler discharging tube road, the boiler feed water pipeline are connected with the outlet pipeline of the reservoir, the boiler Outlet pipeline is divided into boiler discharge tube and boiler blow-down water pipe, and the boiler discharge tube and the boiler blow-down water pipe pass through water circulating pump One is connected with the water tank, and the water tank is equipped with water tank discharge tube and water tank return pipe, and the water tank is put Water pipe and the water tank return pipe by water circulating pump two be accordingly connected to heating plant, the electric heating auxiliary system Including electrical auxiliary heater and controller assemblies, wherein
The electrical auxiliary heater includes electric heater main body, and the electric heater main body includes shell, on the shell Equipped with electric heater inlet pipeline and electric heater outlet pipeline, the electric heater inlet pipeline and the boiler feed water pipeline In parallel and be connected with the outlet pipeline of the reservoir, the electric heater outlet pipeline is divided into electric heater discharge tube and electricity Heater return tube, the electric heater discharge tube and the electric heater return pipe pass through water circulating pump three and the water tank It is connected;Multiple groups electric heating tube is equipped in the shell, the top of the shell is equipped with multiple apertures, and the electric heating tube passes through The aperture penetrates in the shell, and the top of the electric heating tube passes through gland and nut and the shell in the tapping Fastening;The outside of the electric heating tube is equipped with superconductive medium memotron, the superconductive medium memotron and the electric heating tube it Between be filled with superconductive medium, between the superconductive medium memotron and the shell be water containing chamber;
The boiler feed water pipeline, the boiler discharge tube, the boiler blow-down water pipe, the electric heater inlet pipeline, On the electric heater discharge tube, the electric heater return pipe, the water tank discharge tube and the water tank return pipe Equipped with corresponding solenoid valve;
The controller assemblies include controller and data acquisition module, and the controller is electrically connected the data acquisition module Block, the controller also with the electric heating tube, the water pump, the water circulating pump one, the water circulating pump two, the circulation Water pump three, multiple solenoid valve electrical connections, the information realization pair that the controller is detected according to the data acquisition module The boiler, the electric heater main body, in the water tank water temperature and water level control.
By using above-mentioned technical proposal, the utility model has the following beneficial effects:
The utility model is increased a set of on the basis of original boiler heating system by optimization production heating system Intelligent electric heating auxiliary system, and intelligent electric heating auxiliary system is parallel on boiler heating system, in this way, working as production process In when being the heating of single or a small amount of reaction kettle without starting trouble, opening intelligent electric heating auxiliary system can reach heating mesh , and when that need to be the heating of multiple reaction kettles, boiler heating system and intelligent electric heating auxiliary system are opened simultaneously, it can be quick Efficiently reach heating purpose, so that whole heating system is met the small-scale of Devices in Workshop respectively and use and make on a large scale With.In addition, the setting of controller assemblies also makes the control process of the electric heating auxiliary system more intelligent in the utility model, It is simpler, convenient for operation.
Based on the above technical solution, the utility model can also make following improvement:
Preferably, be additionally provided with demineralized water treatment device on the outlet pipeline of the reservoir, can be reduced after water is softened each pipeline, The generation of scale formation in container, improves the whole service life of system.
Preferably, the data acquisition module includes in the boiler, the electric heater main body, the water tank Temperature sensor and water level sensor, multiple temperature sensors and the water level sensor are electrically connected with the controller It connects.The setting of temperature sensor and water level sensor can enable a system to timely to boiler, electric heater main body, water tank Interior water temperature and water is controlled, and finally ensures the accurate heating to Devices in Workshop.
Preferably, the electric heating tube outer wall is more Curved surface metal pipes with high cooling efficiency, more Curved surface metals Pipe is provided with high-resistance alloy heating wire, filled with high-purity between more Curved surface metal pipes and the high-resistance alloy heating wire Magnesia.Above-mentioned electric heating tube has the advantages that thermal effect height, rapid heat dissipation, is suitable for quick, the high-efficiency heating used on a small scale Or the auxiliary of boiler heating system is heated.
Preferably, the efficient heat generation part of the electric heating tube is all surrounded by the superconductive medium memotron, to ensure Thermal energy is made full use of.
Preferably, the superconductive medium memotron is more Curved surface heterotype pipes made of high-thermal conductive metal material, further Improve the heat exchanger effectiveness with water.
Preferably, the red copper gasket to seal is equipped between the electric heating tube and the aperture of the housing tip.
Preferably, the outside of the shell, boiler, water tank and respective line is equipped with insulating layer, can be utmostly Reduction heat loss.
Preferably, the controller assemblies are equipped with earth leakage protective device.
It can be seen via above technical scheme that compared with prior art, the utility model, which discloses, provides a kind of intelligence electricity Warm-up auxiliary system, it has the advantage that:
It is used cooperatively, is improved work efficiency using boiler heating system and electric heating auxiliary system, saved cost, together When have the following characteristics that
1., the thermal efficiency it is high: reaction kettle heating requirements can be met;
2., heating expense it is low: according to the independent heating principles of control needed for production, using way of economic operation, operating cost Than coal-fired, combustion gas expense is lower, labour cost is saved;
3., be good for the environment: without leakage, low noise, without any pollution, temperature intelligent is controllable, is able to satisfy safety collar health care The requirement of health production;
4., operational safety: Automatic Control normal pressure designs and has earth leakage protective device, without special messenger guard;
5., high service life: electric heater body interior is reasonable in design, using high-resistance alloy heating wire and high-purity Magnesia packing material, thermal coefficient are high;
6., high sealing reliability: add red copper gasket between electric heating tube and the aperture of housing tip, both ensure that electricity The reliability of heater body end part seal, and reduce manufacturing cost;
7., electric heating tube convenient disassembly: the connection between electric heating tube and shell is changed to detachably by common welding Bolt fastening structure, when replacement, the gland of junction and nut need to only be removed, old electrothermal tube be pulled out and be penetrated new Electrothermal tube covers gland again and tightens nut.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 attached drawing is the connection signal of intelligent electric heating auxiliary system and boiler heating system provided by the utility model Figure;
Fig. 2 attached drawing is the overall structure diagram of intelligent electric heating auxiliary system provided by the utility model;
Wherein, in figure,
1 is boiler heating system,
11 it is boiler, 12 be reservoir, 13 be water tank, 14 be water pump, 15 be water circulating pump one, 16 is water circulating pump Two,
111 it is boiler feed water pipeline, 112 be boiler discharge tube, 113 is boiler blow-down water pipe,
131 it is water tank discharge tube, 132 is water tank return pipe;
2 be electric heating auxiliary system,
21 it is controller assemblies, 22 be electric heater main body, 23 is water circulating pump three,
221 it is electric heater inlet pipeline, 222 be electric heater discharge tube, 223 be electric heater return pipe, 224 is shell Body, 225 be electric heating tube, 226 be gland, 227 be nut, 228 be superconductive medium memotron, 229 be superconductive medium, 2210 be Water containing chamber, 2211 are red copper gasket;
3 be solenoid valve;
4 be demineralized water treatment device.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figs. 1-2, the utility model embodiment discloses a kind of intelligent electric heating auxiliary system, for realizing to pot The auxiliary of furnace heating system 1 heats, and boiler heating system 1 includes boiler 11, reservoir 12, water tank 13, and reservoir 12 goes out Water lines are equipped with water pump 14, and boiler 11 is equipped with boiler feed water pipeline 111 and boiler discharging tube road, boiler feed water pipeline 111 It is connected with the outlet pipeline of reservoir 12, boiler discharging tube road is divided into boiler discharge tube 112 and boiler blow-down water pipe 113, boiler Discharge tube 112 and boiler blow-down water pipe 113 are connected by water circulating pump 1 with water tank 13, and water tank 13 is equipped with water tank Discharge tube 131 and water tank return pipe 132, water tank discharge tube 131 and water tank return pipe 132 by water circulating pump 2 16 with Accordingly it is connected to heating plant.
Electric heating auxiliary system 2 includes electrical auxiliary heater and controller assemblies 21, wherein
Electrical auxiliary heater includes electric heater main body 22, and electric heater main body 22 includes shell 224, is set on shell 224 There are electric heater inlet pipeline 221 and electric heater outlet pipeline, electric heater inlet pipeline 221 and boiler feed water pipeline 111 It is in parallel and be connected with the outlet pipeline of reservoir 12, electric heater outlet pipeline be divided into electric heater discharge tube 222 and electricity plus Hot device return pipe 223, electric heater discharge tube 222 and electric heater return pipe 223 pass through water circulating pump 3 23 and water tank 13 It is connected.
Multiple groups electric heating tube 225 is equipped in shell 224, the top of shell 224 is equipped with multiple apertures, and electric heating tube 225 is logical It crosses aperture to penetrate in shell 224, and the top of electric heating tube 225 passes through gland 226 and nut 227 and shell 224 in tapping Fastening;The outside of electric heating tube 225 is equipped with superconductive medium memotron 228, superconductive medium memotron 228 and electric heating tube 225 it Between be filled with superconductive medium 229, between superconductive medium memotron 228 and shell 224 for storage heating water water containing chamber 2210.
Boiler feed water pipeline 111, boiler discharge tube 112, boiler blow-down water pipe 113, electric heater inlet pipeline 221, electricity add It is equipped on hot device discharge tube 222, electric heater return pipe 223, water tank discharge tube 131 and water tank return pipe 132 corresponding Solenoid valve 3.
Controller assemblies 21 include controller and data acquisition module, and controller is electrically connected data acquisition module, controller Also it is electrically connected with electric heating tube 225, water pump 14, water circulating pump 1, water circulating pump 2 16, water circulating pump 3 23, multiple solenoid valves 3 It connects, the information realization that controller is detected according to data acquisition module is to water in boiler 11, electric heater main body 22, water tank 13 The control of temperature and water level.
In order to further optimize the above technical scheme, demineralized water treatment device 4 is additionally provided on the outlet pipeline of reservoir 12.
In order to further optimize the above technical scheme, data acquisition module include set on boiler 11, electric heater main body 22, Temperature sensor and water level sensor in water tank 13, multiple temperature sensors and water level sensor are electrically connected with controller It connects.
In order to further optimize the above technical scheme, 225 outer wall of electric heating tube is more Curved surface metal pipes, more Curved surface metal pipes It is provided with high-resistance alloy heating wire, high-purity magnesium oxide is filled between more Curved surface metal pipes and high-resistance alloy heating wire.
In order to further optimize the above technical scheme, the efficient heat generation part of electric heating tube 225 is all stored up by superconductive medium Deposit the encirclement of pipe 228.
In order to further optimize the above technical scheme, superconductive medium memotron 228 is made of high-thermal conductive metal material More Curved surface heterotype pipes.
In order to further optimize the above technical scheme, red copper is equipped between the aperture on 224 top of electric heating tube 225 and shell Gasket 2211.
In order to further optimize the above technical scheme, the outside of shell 224, boiler 11, water tank 13 and respective line is equal Equipped with insulating layer.
In order to further optimize the above technical scheme, controller assemblies 21 are equipped with earth leakage protective device.
The specific work process of auxiliary heating is carried out using a kind of intelligent electric heating auxiliary system of the utility model are as follows:
Before use, target temperature is first set on temperature control modules, and when only needing to heat for single reaction kettle, control The water pump 14 on 12 outlet pipeline of reservoir is opened in device control, while controlling the electromagnetism opened on electric heater inlet pipeline 221 Valve 3, at this point, reservoir 12 is only that electric heater main body 22 supplies water;Certain position is reached to the water level in electric heater main body 22 Afterwards, pause is supplied water, and controller controls the electric heating tube 225 in opening electric heater main body 22, and the water in water containing chamber 2210 is added Heat arrives set temperature;Then, the solenoid valve 3 on water circulating pump 3 23 and electric heater discharge tube 222 is opened in controller control, will Hot water is stored in advance in water tank 13, repeats above-mentioned movement, until the water level in water tank 13 reaches setting position;Finally, control Device control opens water circulating pump 2 16 and electric heater return pipe 223, water tank discharge tube 131, on water tank return pipe 132 Solenoid valve 3, hot water circuit is supplied to corresponding reaction kettle and is heated for it, by reacting kettle jacketing reflux cold water again by water storage Case 13, which is back in electric heater main body 22, to be continued to heat, and forms a complete circulation.Temperature sensor and water level pass Sensor can monitor water tank 13 and water level and water temperature in electric heater main body 22 at any time, and controller meeting basis acquires in real time Data information controls the solenoid valve 3 in water pump 14, water circulating pump 2 16, water circulating pump 3 23 and respective line, realizes to electricity Water temperature and the intelligent control of water level in heater body 22, water tank 13.
When that need to be that Devices in Workshop is heated on a large scale, boiler heating system 1 can be opened and be aided with the utility model In electric heating auxiliary system 2.The water pump 14 on the outlet pipeline of reservoir 12 is opened in controller control, while controlling opening pot Solenoid valve 3 on furnace inlet pipeline 111 and electric heater inlet pipeline 221, at this point, reservoir 12 adds simultaneously for boiler 11 and electricity Hot device main body 22 supplies water;After the water level in boiler 11 and electric heater main body 22 reaches certain position, corresponding solenoid valve is closed 3, pause water supply, boiler 11 heats the water wherein accommodated using the modes such as combustion gas, fire coal, and controller control is opened electricity and added Electric heating tube 225 in hot device main body 22, heats the water in water containing chamber 2210;After water is heated to set temperature, On controller control opening water circulating pump 1, water circulating pump 3 23 and boiler discharge tube 112, electric heater discharge tube 222 Hot water is stored in water tank 13 by solenoid valve 3 in advance, repeats above-mentioned movement, until the water level in water tank 13 reaches setting position; Finally, water circulating pump 2 16 is opened in controller control and boiler blow-down water pipe 113, electric heater return pipe 223, water tank discharge water Hot water circuit is supplied to corresponding reaction kettle and heated for it, by reacting by the solenoid valve 3 on pipe 131, water tank return pipe 132 The cold water of kettle collet reflux is back in boiler 11 and electric heater main body 22 by water tank 13 again to be continued to heat, and has been formed Whole circulation.Temperature sensor and water level sensor can be monitored at any time in water tank 13 and boiler 11, electric heater main body 22 Water level and water temperature, controller can according to acquire in real time data information control water pump 14, water circulating pump 1, water circulating pump two 16, the solenoid valve 3 in water circulating pump 3 23 and respective line is realized in boiler 11, electric heater main body 22, water tank 13 The intelligent control of water temperature and water level.
After increasing the utility model intelligence electric heating auxiliary system, the heating of Devices in Workshop is made to become more convenient fast Victory, in addition, due to the operating cost and cost of labor that eliminate boiler preheating when workshop appliance heats on a small scale, only consume compared with Few electric energy greatly reduces the production run cost of factory in comparison, meets China's energy-saving and emission-reduction, promotes energy resource structure Adjustment policy.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part It is bright.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein The widest scope consistent with features of novelty.

Claims (9)

1. a kind of intelligence electric heating auxiliary system, for realizing the auxiliary heating to boiler heating system, the boiler heat supplying system System includes boiler, reservoir, water tank, and the outlet pipeline of the reservoir is equipped with water pump, the boiler be equipped with boiler into Water lines and boiler discharging tube road, the boiler feed water pipeline are connected with the outlet pipeline of the reservoir, and the boiler goes out Water lines are divided into boiler discharge tube and boiler blow-down water pipe, and the boiler discharge tube and the boiler blow-down water pipe pass through water circulating pump one It is connected with the water tank, the water tank is equipped with water tank discharge tube and water tank return pipe, and the water tank discharges water Pipe and the water tank return pipe by water circulating pump two be accordingly connected to heating plant, which is characterized in that it is described electric to add Hot auxiliary system includes electrical auxiliary heater and controller assemblies, wherein
The electrical auxiliary heater includes electric heater main body, and the electric heater main body includes shell, and the shell is equipped with Electric heater inlet pipeline and electric heater outlet pipeline, the electric heater inlet pipeline are in parallel with the boiler feed water pipeline And be connected with the outlet pipeline of the reservoir, the electric heater outlet pipeline is divided into electric heater discharge tube and electric heating Device return pipe, the electric heater discharge tube and the electric heater return pipe are connected by water circulating pump three with the water tank It connects;Multiple groups electric heating tube is equipped in the shell, the top of the shell is equipped with multiple apertures, and the electric heating tube passes through described Aperture penetrates in the shell, and the top of the electric heating tube is tight by gland and nut and the shell in the tapping Gu;The outside of the electric heating tube is equipped with superconductive medium memotron, between the superconductive medium memotron and the electric heating tube It is water containing chamber between the superconductive medium memotron and the shell filled with superconductive medium;
It is the boiler feed water pipeline, the boiler discharge tube, the boiler blow-down water pipe, the electric heater inlet pipeline, described It is equipped on electric heater discharge tube, the electric heater return pipe, the water tank discharge tube and the water tank return pipe Corresponding solenoid valve;
The controller assemblies include controller and data acquisition module, and the controller is electrically connected the data acquisition module, The controller also with the electric heating tube, the water pump, the water circulating pump one, the water circulating pump two, the recirculated water Pump three, multiple solenoid valve electrical connections, the information realization that the controller is detected according to the data acquisition module is to institute State boiler, the electric heater main body, in the water tank water temperature and water level control.
2. a kind of intelligent electric heating auxiliary system according to claim 1, it is characterised in that: the outlet pipe of the reservoir Road is additionally provided with demineralized water treatment device.
3. a kind of intelligent electric heating auxiliary system according to claim 1, it is characterised in that: the data acquisition module packet It includes and is set to the boiler, the electric heater main body, temperature sensor and water level sensor in the water tank, it is multiple described Temperature sensor and the water level sensor are electrically connected with the controller.
4. a kind of intelligent electric heating auxiliary system according to claim 1, it is characterised in that: the electric heating tube outer wall is More Curved surface metal pipes, more Curved surface metal pipes are provided with high-resistance alloy heating wire, more Curved surface metal pipes and the height High-purity magnesium oxide is filled between electric resistance alloy heating wire.
5. a kind of intelligent electric heating auxiliary system according to claim 1 or 4, it is characterised in that: the electric heating tube Efficient heat generation part is all surrounded by the superconductive medium memotron.
6. a kind of intelligent electric heating auxiliary system according to claim 1, it is characterised in that: the superconductive medium memotron For more Curved surface heterotypes pipe made of high-thermal conductive metal material.
7. a kind of intelligent electric heating auxiliary system according to claim 1, it is characterised in that: the electric heating tube with it is described Red copper gasket is equipped between the aperture of housing tip.
8. a kind of intelligent electric heating auxiliary system according to claim 1, it is characterised in that: the shell, boiler, water storage The outside of case and respective line is equipped with insulating layer.
9. a kind of intelligent electric heating auxiliary system according to claim 1, it is characterised in that: set on the controller assemblies There is earth leakage protective device.
CN201920156292.6U 2019-01-29 2019-01-29 A kind of intelligence electric heating auxiliary system Expired - Fee Related CN209639243U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920156292.6U CN209639243U (en) 2019-01-29 2019-01-29 A kind of intelligence electric heating auxiliary system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920156292.6U CN209639243U (en) 2019-01-29 2019-01-29 A kind of intelligence electric heating auxiliary system

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Publication Number Publication Date
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Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112212500A (en) * 2020-09-01 2021-01-12 青岛经济技术开发区海尔热水器有限公司 Water heating module and modular water heating device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112212500A (en) * 2020-09-01 2021-01-12 青岛经济技术开发区海尔热水器有限公司 Water heating module and modular water heating device

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