CN205958034U - Integral type water flow sensor - Google Patents

Integral type water flow sensor Download PDF

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Publication number
CN205958034U
CN205958034U CN201620916180.2U CN201620916180U CN205958034U CN 205958034 U CN205958034 U CN 205958034U CN 201620916180 U CN201620916180 U CN 201620916180U CN 205958034 U CN205958034 U CN 205958034U
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China
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water
valve body
pipelined channel
valve
valve element
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Chinese (zh)
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陈汉虎
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Guangdong Meichushijia Thermal Technology Co ltd
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Individual
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Abstract

The utility model relates to an integral type water flow sensor, including the valve body, and set up rivers rotor subassembly, hall element and the stationary flow subassembly on the valve body, be provided with the flowing water passageway in the valve body, the end of intaking of this flowing water passageway communicates water inlet and delivery port on the valve body respectively with the play water end (W. E. ), rivers rotor subassembly is close to the water inlet and sets up in the flowing water passageway, and it includes pivoted magnetic rotor, and this magnetic rotor rotates under hydraulic effect at least, the stationary flow subassembly includes the case, and the case rotates and sets up in the flowing water passageway to realize opening and close flowing water passageway and/or regulated stream flow volume through rotating, hall element corresponds rivers rotor subassembly and sets up in valve body surface. Through integrated discharge response function and water flow control function on a valve body, realize integral type integration setting, simple structure is reasonable moreover for the assembly of this water flow sensor is simple, low in manufacturing cost, and the dependable performance realizes the module setting, application scope is wide.

Description

A kind of one body swimming flow transducer
Technical field
This utility model is related to a kind of water flow sensor, specifically a kind of one body swimming flow transducer, concrete application Need on the equipment of detection discharge in water heater, water dispenser etc..
Background technology
Existing differential water vapor linked valve has the disadvantages that:Structure is more complicated, and volume is big, and startup hydraulic pressure is higher, water Road SR is larger, is not preferably used for the Large Copacity water heater AZ of more than 10L/min.
Chinese patent literature CN202371281U discloses a kind of flow sensing device and use on the 8th in August in 2012 The discharge ratio adjusting valve of this device, specifically discloses:This flow sensing device, it includes signal generator and Hall unit Part, described signal generator includes cylinder, the magnet rotor with rotating shaft, rotor bearing, impeller, the water inlet end phase of impeller and cylinder Even, rotating shaft one end is connected with rotor bearing, and the other end is connected with impeller, and described rotor bearing is provided with boss, described boss Contact with the end point of rotating shaft.This uses the discharge ratio adjusting valve of above-mentioned flow sensing device, including valve body, valve element, core Axle, motor, valve body is provided with the intake tunnel being interconnected and exhalant canal, and one end of described mandrel passes through valve element, the other end It is connected with the rotating shaft of motor, described intake tunnel is provided with flow sensing device.This discharge ratio adjusting valve complex structure, dress Join effect low, manufacturing cost is high.
Accordingly, it would be desirable to improve further.
Utility model content
The purpose of this utility model is to overcome the shortcomings of that above-mentioned prior art exists, and provides one kind to design simple, knot Structure is reasonable, globality is strong, reflection is sensitive, life-span length, be swift in motion, safe and reliable, easy to connect, start the ultralow (1.5L/ of flow Min one body swimming flow transducer).
The purpose of this utility model is realized in:
A kind of one body swimming flow transducer it is characterised in that:Including valve body, and it is arranged at the water flow rotor group on valve body Part, Hall element and current stabilization assembly;It is provided with pipelined channel, the water inlet end of this pipelined channel and water side are respectively in described valve body Water inlet on connection valve body and outlet;Water flow rotor assembly is arranged in pipelined channel near outlet, and it includes rotating Magnet rotor, this magnet rotor rotates at least in the presence of hydraulic pressure;Current stabilization assembly includes valve element, and valve core rotation is arranged at stream In aquaporin, and realize opening and closing pipelined channel and/or regulating water flow by rotating;The corresponding water flow rotor assembly of Hall element sets It is placed in valve body surface.
Described water flow rotor assembly also includes turbine switch shell and brake hoop, and turbine switch shell one end is provided with band turbine leaf The turbine portion of piece, the other end assembles brake hoop, and magnet rotor rotates in turbine switch shell, and the rotating shaft two ends of magnet rotor are divided Other locating rotation is in turbine portion and brake hoop;On magnet rotor, annular is evenly equipped with some flat magnetic leafs, this magnetic leaf Piece is along the axis direction straight-line extension of magnet rotor.
The axis of described brake hoop is provided with the axis hole for grafting magnet rotor, is provided with steel ball in axis hole, and steel ball is made End with magnet rotor rotating shaft.
It is provided with the draw-in groove of annular in described valve body, in draw-in groove, is provided with snap ring, water flow rotor assembly passes through snap ring positioning lock Only in pipelined channel.
The regulation mouth of pipelined channel is communicated with described valve body, valve core rotation is inserted in regulation mouth, and cuts off or lead Through-flow aquaporin.
Described valve element is provided with water through structure, and during rotational valve core pipelined channel corresponding to water through structure, pipelined channel turns on; When rotational valve core to water through structure departs from pipelined channel, pipelined channel cuts off.
Described current stabilization assembly also includes being arranged at the tabletting adjusting on mouth and the knob connecting valve element;Valve element is locked by tabletting Only in regulation mouth, knob connects valve element top, and exposes to valve body, acts on valve core rotation by knob.
Described tabletting is provided with spacing breach, and valve element is provided with gag lever post, and gag lever post swings in spacing breach, and limits Valve element rotates in the range of spacing breach, and the slewing area of valve element is b, 80 °≤b≤100 °.
It is provided with sealing-plug on described water inlet.
The relief valve of pipelined channel is communicated with described valve body, on this relief valve, dismountable is provided with decompression cover.
Temperature sensor is provided with described valve body, the probe in temperature sensor is stretched in pipelined channel and contacted with water.
The beneficial effects of the utility model are as follows:
By integrated discharge inducing function and current adjustment on a valve body, realize integral type and integrate setting, And simple and reasonable so that the assembling of this water flow sensor is simple, low cost of manufacture, dependable performance, realize modularity and set Put, applied widely.Wherein, the water flow rotor assembly for realizing discharge sensing includes magnet rotor and turbine switch shell, Turbine portion is provided with turbine switch shell, water forms whirlpool in the presence of turbine portion, and acts on magnet rotor and rotate, Hall unit Part induced magnetism rotor, and output signal, are finally judged the size of discharge by controller, and its discharge induction mode is electric Formula, structure is relatively easy, small volume, and startup hydraulic pressure is low, and water circuit system resistance is little, can be used for the Large Copacity heat of more than 10L/min On hydrophone.Current stabilization assembly for realizing discharge regulation includes valve element, and valve element is provided with water through structure, when water through structure and stream Aquaporin turns on pipelined channel to when corresponding to, and passes through mutually corresponding area regulating water flow, and it is simple to operate, and performance Reliable.Additionally, the magnetic field that magnet rotor produces, make light water become magnetized water, lift use feeling.When cutting off the water, magnet rotor Stall, Hall element termination signal exports, and when controller does not receive signal, that is, controls and stops associated appliance element manipulation, really Guarantor uses safety.
Brief description
Fig. 1 is the three-dimensional assembly diagram of this utility model one embodiment.
Fig. 2 is the side view of this utility model one embodiment.
Fig. 3 unload lower knob for this utility model one embodiment after top view (broken section).
Fig. 4 is the exploded view of this utility model one embodiment.
Fig. 5 is the sectional view of this utility model one embodiment.
Fig. 6 is the sectional view in the another orientation of this utility model one embodiment.
Fig. 7 is the exploded view of water flow rotor assembly in this utility model one embodiment.
Fig. 8 is the installation diagram of brake hoop and magnet rotor in this utility model one embodiment.
Fig. 9 is the structural representation (broken section) of sealing-plug in this utility model one embodiment.
Figure 10 is the structural representation of valve element in this utility model one embodiment.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment is further described to this utility model.
Referring to Fig. 1-Figure 10, this one body swimming flow transducer is applied on water heater, and it includes valve body 1, and is arranged at Water flow rotor assembly 2 on valve body 1, Hall element 3 and current stabilization assembly;It is provided with pipelined channel a, this flowing water in described valve body 1 The water inlet end of passage a and water side are respectively communicated with water inlet 102 and outlet 101 on valve body 1;Water flow rotor assembly 2 is close Outlet 101 is arranged in pipelined channel a, and it includes the magnet rotor 10 rotating, and this magnet rotor 10 is at least in the work of hydraulic pressure Use lower rotation;Current stabilization assembly includes valve element 4, and valve element 4 rotates and is arranged in pipelined channel a, and realizes opening and closing flowing water by rotating Passage a and/or regulating water flow;The corresponding water flow rotor assembly 2 of Hall element 3 is arranged at valve body 1 surface.This structure is passed through to integrate Discharge sensing and discharge are adjusted on valve body 1, and the integral type realizing water flow sensor is arranged it is achieved that modularity, carries High efficiency of assembling, and simple and reasonable, low cost of manufacture;Additionally, discharge sensing is to be measured by Hall effect Physics of Magnetism amount, then it is calculated the size of discharge by controller, therefore reflect sensitive, discharge accuracy of reading is high.
Further, described water flow rotor assembly 2 also includes turbine switch shell 9 and brake hoop 12.Turbine switch shell 9 is in set Tubular, its near outlet 101 tip inside integrally formed with the turbine portion 901 with turbo blade, turbo blade annular is all Cloth;The other end dismountable assembling brake hoop 12, the effect of brake hoop 12 is when cutting off the water, and prevents magnet rotor 10 and rotates, from And terminate pulse signal output.Magnet rotor 10 is rotatably arranged in turbine switch shell 9, and the rotating shaft two ends of magnet rotor 10 are divided Other locating rotation is in turbine portion 901 and brake hoop 12.On magnet rotor 10, annular is evenly equipped with four pieces of flat magnetic leafs 1001, this magnetic leaf 1001 is along the axis direction straight-line extension of magnet rotor 10.The positive pole of Hall element 3 seals in load electricity Resistance, leads to the DC voltage of upper 5V simultaneously and makes the sense of current orthogonal with magnetic direction.
During water flowing, magnetic leaf 1001 rotates with magnet rotor 10, thus producing the rotating excitation field of different magnetic poles, and cuts Magnetic induction line, produces height impulse level, and the output pulse signal frequency due to Hall element 3 is become with the rotating speed of magnet rotor 10 Direct ratio, the rotating speed of magnet rotor 10 is directly proportional to discharge again, therefore can be calculated by correlation formula, pulse signal frequency Relational expression with discharge is:F=8.1q-3 is (in formula:F is pulse signal frequency, and unit is H;Q is discharge, and unit is L/ min).Judge the value of discharge by the controller that the feedback signal of water flow sensor passes through on water heater;Also can be according to hot water The difference of device type, selects optimal startup flow, realizes ultralow pressure (below 0.02MPa) and starts.
Further, the axis of described brake hoop 12 is provided with the axis hole 1201 for grafting magnet rotor 10, axis hole It is provided with the steel ball 11 of stainless steel, steel ball 11 acts on the end of magnet rotor 10 rotating shaft in 1201.This structure can make magnetic The rotation of rotor 10 is more stable, more smooth, therefore can substantially reduce startup pressure, and sensitivity is higher, and discharge senses more Precisely, performance safety and reliability.
Further, it is provided with the draw-in groove 105 of annular in described valve body 1, in draw-in groove 105, be provided with snap ring 7, water flow rotor group Part 2 passes through snap ring 7 positioning and is locked in pipelined channel a.Wherein, snap ring 7 be notched annular element so as to compressible deformation simultaneously There is certain restoring force.Realize the overall locking of water flow rotor assembly 2, specifically turbine by locking turbine switch shell 9 Switch housing 9 one end relies on valve body 1, and the other end leans snap ring 7, improves the simplification of water flow rotor assembly 2 assembling, Er Qiexiao Rate is high.
Further, described valve body 1 is communicated with the regulation mouth 103 of pipelined channel a, valve element 4 rotates and is inserted in regulation In mouth 103, and cut off or turn on pipelined channel a.Bending part is had on pipelined channel a, valve element 4 is arranged on arbitrary bending part, real The now cut-out to pipelined channel a and conducting, assembling is simple, and dependable performance.
Further, it is provided with the chamber of bottom opening in described valve element 4, the open communication pipelined channel a of this chamber is close The part of water inlet 102, the corresponding chamber of valve element 4 side wall is provided with the water flowing knot that can connect pipelined channel a near outlet 101 part Structure 403, during rotational valve core 4 pipelined channel a corresponding to water through structure 403, pipelined channel a turns on;Rotational valve core 4 is to water through structure During 403 disengaging pipelined channel a, pipelined channel a cuts off.Water through structure 403 can be more than one through hole, two or more through hole Different discharges can be obtained by arranging different area;Water through structure 403 can also be the little strip through-hole in the big one end in one end, Rotational valve core 4 makes this strip through-hole area corresponding with pipelined channel a change, thus reaching the purpose of regulating water flow. This regulative mode is simple and reliable, and degree of regulation is high, applied widely.
Further, described current stabilization assembly also includes being arranged at the tabletting 8 adjusting on mouth 103 and the knob connecting valve element 4 5;Valve element 4 is locked in regulation mouth 103 by tabletting 8, realizes the positioning assembling of valve element 4, valve element 4 is provided with sealing ring, with Guarantee sealing, prevent leak;Knob 5 connects the connecting post 401 at valve element 4 top, and exposes to valve body 1, is acted on by knob 5 Valve element 4 rotates, and realizes adjusting manually.
Further, described tabletting 8 is provided with spacing breach 801, and connecting post 401 runs through tabletting 8, and in connecting post 401 It is outward extended with gag lever post 402, gag lever post 402 swings in spacing breach 801, and limit the angle in spacing breach 801 for the valve element 4 Rotate in the range of degree, in this structure, the slewing area of valve element 4 is 90 ° for b.
Further, described water inlet 102 is provided with sealing-plug 13, this sealing-plug 13 is in cylindrical setting, and inside sets There is chamber, chamber corresponding sealing-plug 13 one end opening setting, the other end is provided with some through holes 1301.
Further, valve body 1 is communicated between valve element 4 and water flow rotor assembly 2 relief valve of pipelined channel a 104, on this relief valve 104, dismountable opens and closes decompression cover 14, and relief valve 104 can protect water heater steady in operation process Qualitative and safety.
Further, described valve body 1 is provided with temperature-sensitive seat 106, and temperature-sensitive seat 106 is fixed with the temperature sensing with sealing ring Device 15, the probe in temperature sensor 15 runs through valve body 1 outer wall, and stretches into and contact with water in pipelined channel a.Temperature sensor 15 It is assemblied on temperature-sensitive seat 106 by stator 16 positioning, be connected by screw between temperature-sensitive seat 106 and stator 16, with fixation Temperature sensor 15.The resistance value of this temperature sensor 15 changes with the self-heating of ambient temperature or electric current generation, that is, certain Measurement power under, resistance value rises with temperature and declines rapidly, using this characteristic, then can by measure its resistance come true Fixed corresponding temperature, thus the purpose reaching detection and controlling temperature.
Operation principle
The water inlet end that this water flow sensing unit is contained in gas heater is used for measuring flow of inlet water, when water flows through water flow rotor group During part 2, magnet rotor 10 rotates, and rotating speed is with the linear change of flow, and it is anti-that Hall element 3 exports corresponding pulse signal The controller fed on gas heater, is judged the size of discharge by this controller, and adjusts on control gas heater The electric current of proportioning valve, thus passing ratio valve controls combustion gas tolerance, it is to avoid gas heater the warm winter in summer in use Cool phenomenon.Water flow sensor fundamentally solves differential water vapor linked valve startup hydraulic pressure height and turnover plate type water valve is easy The shortcomings of dry combustion method in misoperation.
When water flow rotor assembly 2 uses water flow switch mode, its performance is better than mechanical type pressure reduction dish structure, and size is obvious Reduce, when current promote magnet rotor 10 to rotate by turbine switch shell 9, the magnetic leaf 1001 with different magnetic poles is near Hall During element 3, Hall element 3 turns on, and when leaving, Hall element 3 disconnects, and thus measures magnet rotor 10 rotating speed.According to actual measurement The curve of discharge, magnet rotor 10 rotating speed and output signal (voltage), just can determine that the startup hydraulic pressure of gas heater, with And start the startup rotating speed of the corresponding startup discharge of hydraulic pressure and magnet rotor 10.By control circuit, just can achieve and work as magnetic Rotor 10 rotating speed is more than gas heater startup work when starting rotating speed;When rotating speed is less than and starts rotating speed, gas heater stops Only work.So gas heater startup hydraulic pressure is typically set in 0.01Mpa, and startup discharge (need to meet combustion for 3~5L/min The restriction to maximum temperaturerise for the gas water heater standard).
Further, since water is under permanent magnet material magnetic field intercepts, become magnetized water, the oxygen content in water increases, and makes one bathing Feel salubrious afterwards.When cutting off the water, the magnetic preventing high-speed rotation turns brake hoop 12,10 rotations, and terminate pulse signal output controls Device does not receive pulse signal, controls proportioning valve to close valve immediately, cutting off source of the gas, preventing dry combustion method it is ensured that using safety.
Above-mentioned for preferred version of the present utility model, of the present utility model ultimate principle, principal character have been shown and described With advantage of the present utility model.Those skilled in the art it should be recognized that this utility model is not restricted to the described embodiments, on State and principle of the present utility model is simply described, without departing from this utility model spirit and scope described in embodiment and description On the premise of this utility model also have various changes and modifications, it is new that these changes and improvements both fall within this claimed practicality In the range of type.This utility model claims scope and is defined by appending claims and its equivalent.

Claims (10)

1. a kind of one body swimming flow transducer it is characterised in that:Including valve body (1), and the current being arranged on valve body (1) turn Sub-component (2), Hall element (3) and current stabilization assembly;It is provided with pipelined channel (a), this pipelined channel (a) in described valve body (1) Water inlet end and water side be respectively communicated with water inlet (102) and outlet (101) on valve body (1);Water flow rotor assembly (2) leans on Nearly outlet (101) is arranged in pipelined channel (a), and it includes the magnet rotor (10) rotating, and this magnet rotor (10) is at least Rotate in the presence of hydraulic pressure;Current stabilization assembly includes valve element (4), and valve element (4) rotates and is arranged in pipelined channel (a), and passes through Rotate and realize opening and closing pipelined channel (a) and/or regulating water flow;The corresponding water flow rotor assembly (2) of Hall element (3) is arranged at valve Body (1) surface.
2. according to claim 1 one body swimming flow transducer it is characterised in that:Described water flow rotor assembly (2) is also wrapped Include turbine switch shell (9) and brake hoop (12), turbine switch shell (9) one end is provided with the turbine portion with turbo blade (901), separately One end assembling brake hoop (12), magnet rotor (10) rotates in turbine switch shell (9), and the rotating shaft two ends of magnet rotor (10) Locating rotation is in turbine portion (901) and brake hoop (12) respectively;The upper annular of magnet rotor (10) is evenly equipped with some magnetic leafs (1001), this magnetic leaf (1001) extends along the axis direction of magnet rotor (10).
3. according to claim 2 one body swimming flow transducer it is characterised in that:Set on the axis of described brake hoop (12) There is the axis hole (1201) for grafting magnet rotor (10), in axis hole (1201), be provided with steel ball (11), steel ball (11) acts on magnetic The end of property rotor (10) rotating shaft.
4. according to claim 1 one body swimming flow transducer it is characterised in that:It is provided with annular in described valve body (1) Draw-in groove (105), is provided with snap ring (7) in draw-in groove (105), water flow rotor assembly (2) is locked at flowing water by snap ring (7) positioning and leads to In road (a).
5. according to claim 1 one body swimming flow transducer it is characterised in that:It is communicated with described valve body (1) flowing The regulation mouth (103) of aquaporin (a), valve element (4) rotates and is inserted in regulation mouth (103), and cuts off or turn on pipelined channel (a).
6. according to claim 5 one body swimming flow transducer it is characterised in that:Described valve element (4) is provided with water flowing knot Structure (403), during rotational valve core (4) pipelined channel (a) corresponding to water through structure (403), pipelined channel (a) turns on;Rotational valve core (4), when to water through structure (403) disengaging pipelined channel (a), pipelined channel (a) cuts off.
7. according to claim 5 one body swimming flow transducer it is characterised in that:Described current stabilization assembly also includes being arranged at Adjust the tabletting (8) on mouth (103) and the knob (5) connecting valve element (4);Valve element (4) is locked at regulation mouth by tabletting (8) (103) in, knob (5) connects valve element (4) top, and exposes to valve body (1), acts on valve element (4) by knob (5) and rotates.
8. according to claim 7 one body swimming flow transducer it is characterised in that:Described tabletting (8) is provided with spacing lacking Mouth (801), valve element (4) is provided with gag lever post (402), and gag lever post (402) swings in spacing breach (801), and limits valve element (4) rotate in the range of spacing breach (801), the slewing area of valve element (4) is b, 80 °≤b≤100 °.
9. according to claim 1 one body swimming flow transducer it is characterised in that:It is provided with described water inlet (102) Sealing-plug (13);The relief valve (104) of pipelined channel (a) is communicated with described valve body (1), this relief valve (104) is upper to be dismantled Formula is provided with decompression cover (14).
10. according to claim 1 one body swimming flow transducer it is characterised in that:It is provided with temperature on described valve body (1) Sensor (15), the probe in temperature sensor (15) is stretched in pipelined channel (a) and is contacted with water.
CN201620916180.2U 2016-08-15 2016-08-15 Integral type water flow sensor Active CN205958034U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107677330A (en) * 2017-06-22 2018-02-09 广东万和新电气股份有限公司 A kind of current quantity measuring method, controller and water flow sensor
CN107883055A (en) * 2017-10-16 2018-04-06 罗铭炽 LCDs applied to intelligent tap
CN107940088A (en) * 2017-12-19 2018-04-20 广东铃木智能科技有限公司 A kind of water inlet valve assembly for changing output signal frequency
CN109141865A (en) * 2018-06-20 2019-01-04 广东万家乐燃气具有限公司 A kind of water valve water frequency relation detection device and method
CN109738110A (en) * 2019-01-04 2019-05-10 安徽辰控智能科技有限公司 A kind of intelligent spray end test water system
CN111350835A (en) * 2018-12-24 2020-06-30 浙江润诚智控科技有限公司 Flow regulating assembly
CN112050861A (en) * 2020-09-23 2020-12-08 绍兴市上虞东虞塑料电器有限公司 Temperature flow detection circuit and sensor thereof
CN112880200A (en) * 2019-11-29 2021-06-01 芜湖美的厨卫电器制造有限公司 Water flow sensor and water heater

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107677330A (en) * 2017-06-22 2018-02-09 广东万和新电气股份有限公司 A kind of current quantity measuring method, controller and water flow sensor
CN107883055A (en) * 2017-10-16 2018-04-06 罗铭炽 LCDs applied to intelligent tap
CN107940088A (en) * 2017-12-19 2018-04-20 广东铃木智能科技有限公司 A kind of water inlet valve assembly for changing output signal frequency
CN109141865A (en) * 2018-06-20 2019-01-04 广东万家乐燃气具有限公司 A kind of water valve water frequency relation detection device and method
CN109141865B (en) * 2018-06-20 2024-05-03 广东万家乐燃气具有限公司 Water valve water quantity frequency relation detection equipment and method
CN111350835A (en) * 2018-12-24 2020-06-30 浙江润诚智控科技有限公司 Flow regulating assembly
CN109738110A (en) * 2019-01-04 2019-05-10 安徽辰控智能科技有限公司 A kind of intelligent spray end test water system
CN112880200A (en) * 2019-11-29 2021-06-01 芜湖美的厨卫电器制造有限公司 Water flow sensor and water heater
CN112880200B (en) * 2019-11-29 2023-08-04 芜湖美的厨卫电器制造有限公司 Water flow sensor and water heater
CN112050861A (en) * 2020-09-23 2020-12-08 绍兴市上虞东虞塑料电器有限公司 Temperature flow detection circuit and sensor thereof

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C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20170316

Address after: 528000 Guangdong City, Zhongshan Province Huang Town, North Road, Xinfeng food industry demonstration base No. two road, No. 2

Patentee after: Zhongshan Midea household electrical appliance Co., Ltd.

Address before: 325700 Zhejiang County, Dongtou Province town of Evergreen Road, Lane 3, No. 2

Patentee before: Chen Hanhu

TR01 Transfer of patent right
CP03 Change of name, title or address

Address after: 528427 workshop 2, No.21, Tongji West Road, Nantou Town, Zhongshan City, Guangdong Province

Patentee after: Guangdong meichushijia Thermal Technology Co.,Ltd.

Address before: 528000 Guangdong City, Zhongshan Province Huang Town, North Road, Xinfeng food industry demonstration base No. two road, No. 2

Patentee before: Zhongshan Midea household electrical appliance Co.,Ltd.

CP03 Change of name, title or address