CN101718460B - Control method of inverter air conditioner - Google Patents
Control method of inverter air conditioner Download PDFInfo
- Publication number
- CN101718460B CN101718460B CN2009101939660A CN200910193966A CN101718460B CN 101718460 B CN101718460 B CN 101718460B CN 2009101939660 A CN2009101939660 A CN 2009101939660A CN 200910193966 A CN200910193966 A CN 200910193966A CN 101718460 B CN101718460 B CN 101718460B
- Authority
- CN
- China
- Prior art keywords
- frequency
- compressor
- operating
- operating frequency
- user
- 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.)
- Active
Links
Images
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to a control method of an inverter air conditioner, which is characterized by comprising the steps of: primarily setting indoor target temperature and working frequency of compressor operation; and operating a control part of the inverter air conditioner by adopting an inverter control mode after receiving the indoor target temperature and the working efficiency which are set by a user, wherein the highest operation frequency of a compressor does not exceed the working efficiency set by the user. The user sets the indoor target temperature and the working efficiency of the compressor through keys on a remote controller or control keys on an indoor machine of the indoor target temperature and the working efficiency. The working efficiency of the compressor has more than two set values which are evenly or unevenly distributed. Setting the working efficiency of the compressor avoids the working efficiency value of the compressor with poor operation condition. The invention has characteristics of good comfort, flexible operation and wide application range.
Description
Technical field
The present invention relates to a kind of convertible frequency air-conditioner, the control method of the convertible frequency air-conditioner of particularly a kind of single cold type, cold-warm type or pure heating type etc.
Background technology
The temperature difference of the indoor target temperature of being scheduled to indoor temperature and user more than the control scheme of the convertible frequency air-conditioner that adopts on the market is as the foundation of frequency converting air-conditioner compressor running frequency; When the temperature difference is big; Adopt high frequency to improve capacity, increase air conditioner refrigerating or heat energy power, reach set indoor target temperature after; Low-frequency operation through convertible frequency air-conditioner makes the range of temperature value comparatively stable, strengthens comfort level.In addition, also occur increasing the indoor temperature change generated in case situation, also participate in influencing the change of frequency of compressor as auxiliary parameter.
Though; The change of frequency situation of this scheme is said the ability that can effectively bring into play frequency-changeable compressor really technically; In the little time of trying one's best, make indoor temperature reach the temperature of setting, can satisfy much human and hope that indoor temperature reaches the requirement of indoor target temperature earlier.This scheme has only considered how to reach fast-refrigerating or heat, be suitable to most of crowds; But it does not consider health problem, all has weak point: for old man and neonate, pregnant woman and Low crowd can not adapt to lower temperature of air-conditioner air outlet and room air too fast reduction or rising.
In addition, if under cooling condition, reduce the temperature difference through the indoor target temperature that raises, the compressor frequency of convertible frequency air-conditioner and refrigerating capacity can reduce, and the speed that indoor temperature reduces can ease up.But, after indoor temperatures such as needs reach setting value last time, repeatedly set the smaller temperature difference and could finally reach the temperature that is used for needs, make whole assignment procedure become very loaded down with trivial details.
Summary of the invention
The object of the invention aims to provide a kind of different crowd that is directed against through setting compressor different working frequency; And be that the maximum running frequency value realize to heat up or the change of cooling with this operating frequency; Thereby the control method of the convertible frequency air-conditioner of the comfortableness of raising different crowd and the energy-saving effect of convertible frequency air-conditioner; And have flexible operation, advantage of wide range of application, to overcome weak point of the prior art.
Press the control method of a kind of convertible frequency air-conditioner of this purpose design; It is characterized in that preestablishing the operating frequency of indoor target temperature and compressor operating; After the control assembly of convertible frequency air-conditioner receives predefined indoor target temperature and operating frequency; Adopt the VFC mode operation, the maximum running frequency of compressor is not higher than the operating frequency that the user sets.
Said user sets the operating frequency of compressor through the operating key on remote controller key or the convertible frequency air-conditioner indoor set.
The operating frequency of said compressor has the setting value more than two, and this setting value is evenly to distribute, or is uneven distribution.
The operating frequency of said setting compressor is avoided the bad operating frequency value of compressor operating operating mode.
The operating frequency of said setting compressor has equally distributed many grades of numerical value, and it is chosen mode and is: the highest frequency of establishing compressor is Fmax, and the low-limit frequency of compressor is Fmin; The frequency interval that convertible frequency air-conditioner can be set is N, and then the frequency number of every grade of frequency interval is f=(Fmax-Fmin)/N, and the optional frequency shelves number of user is n; N is 0,1,2; ... N, when the user selected the n shelves, the operating frequency of actual compressor was Fmax-nf.
The scope that said frequency interval is counted N is 2～6.
The step that is provided with of said operating frequency is:
A, entering operating frequency are provided with pattern;
B, select the button of the frequency of users' tendency in a plurality of operating frequencies;
C, affirmation, the frequency of deactivating is provided with pattern.
The control method of convertible frequency air-conditioner according to claim 7 is characterized in that said step b for changing the information of the operating frequency that shows in the display unit through shift key, appears in the display unit up to the information of the operating frequency of user's tendency; And then carry out step c.
The present invention is through the control to compressor maximum running frequency in the convertible frequency air-conditioner; The operating frequency of setting with the user is a maximum running frequency; Adopt the change of VFC pattern control programming rate or cooling rate; Thereby improve the comfortableness of different crowd, it has, and comfortableness is good, flexible operation, advantage of wide range of application.
Description of drawings
When Fig. 1 adopts the operation of different operating frequency for the present invention, the variation sketch map of corresponding indoor temperature;
Fig. 2 is the demonstration figure of the different set operating frequency of the embodiment of the invention one.
Fig. 3 is the demonstration figure of the different set operating frequency of the embodiment of the invention two.
Fig. 4 sets the flow chart of steps that is provided with of different operating frequency for the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Embodiment one
Referring to Fig. 1 and Fig. 2, the variation diagram and the frequency diagram of indoor temperature during with the different set operating frequency for the embodiment of the invention one, as shown in Figure 2: ordinate is the frequency Hz of compressor, abscissa is the shelves number n of the optional operating frequency of user; Setting value just, as can be seen from the figure, the highest frequency Fmax of compressor is 120 hertz; Low-limit frequency Fmin is 18 hertz, also has two intermediate frequency values available in addition, is respectively 100 hertz and 37 hertz; Setting operating frequency is that inhomogeneous setting (certainly, can also have more more options value, perhaps not establish a grade number; Direct frequency modulation rate value all belongs to the control mode that is equal to of the present invention, does not give an example one by one here).
During operation of air conditioner, the user sets indoor target temperature earlier, if do not adjust; Then be the indoor target temperature of systemic presupposition or the indoor target temperature that the user operated operation last time, select the operation operating frequency then, the user can select four operating frequencies; Be respectively when n=0, corresponding operating frequency is Fmax, when the user selects this pattern; Convertible frequency air-conditioner adopts the VFC mode operation, and the compressor maximum running frequency can reach 120 hertz, and adjusts rotating speed according to the difference of indoor target temperature of setting and actual indoor temperature; When the indoor target temperature of setting and actual indoor temperature difference are big; 120 hertz of operating frequency trends, when the indoor target temperature of setting and actual indoor temperature difference hour, the low-limit frequency that the operating frequency trend is 18 hertz is moved.Technology according to temperature difference adjustment running frequency belongs to widely used public technology, is not described in detail here.When the user selects n=1; Corresponding operating frequency is 100 hertz; This operating frequency is less than highest frequency Fmax, and when the user selected this operating frequency, compressor was that maximum running frequency adopts the VFC pattern to carry out the refrigerating/heating operation with 100 hertz of this operating frequencies; When the user selects n=2; Corresponding operating frequency is 37 hertz; This operating frequency is greater than Fmin; When the user selected this operating frequency, before the indoor target temperature that reaches user's setting, compressor was that maximum running frequency adopts the VFC pattern to carry out the refrigerating/heating operation with this operating frequency; When the user selected n=3, compressor adopted the minimum operation frequency, and it is the same that all the other do not state part.
Disclose like the present invention, in the present embodiment, the user can select operation n=0 through button on the remote controller or the operating key on the indoor set ..., each operating frequency operational mode among the N.
As can be seen from Figure 2, work as n=1, the operating frequency during n=2 is not equally distributed.Distribute if adopt evenly, the n=1 in the present embodiment, the operating frequency during n=2 is respectively 86 hertz, 52 hertz.But be actually: n=1 relatively presses close to n=0, i.e. the position of Fmax; N=2 relatively presses close to n=3, i.e. the position of Fmin.
Disclose like the present invention; In the present embodiment, the numerical value of the operating frequency that the user can set is when moving according to frequency-changeable compressor, compressor and the less Frequency point of pipe-line system vibration; Operating point just; As the operating frequency numerical value of user's setting, to reduce system noise and the system vibration when this point moves, the life-span of improving system simultaneously.In the present embodiment, compressor operating when 100 hertz or 37 hertz, have relatively near lower system vibration and system noise during other running frequency.
Owing to the resonance reason causes noise bigger, so will avoid, the operation noise during such as 37 hertz is less at some running frequency point for convertible frequency air-conditioner, might be adjacent 36 hertz with 38 hertz of noise height during all than 37 hertz of operations.
Further analyze in conjunction with Fig. 1, when adopting the different operating frequency to the influence of indoor temperature.Ordinate is an indoor temperature among the figure, and abscissa is the time, and this figure shows indoor temperature 31 degree, adopt different running mode after, when reaching indoor target temperature 26 that the user sets and spending, the situation of change of indoor temperature.
Wherein, when C0 was the n=0 in the present embodiment, when promptly compressor adopted highest frequency Fmax frequency, the change curve of indoor temperature can be found out from curve, and indoor temperature has just reached the indoor target temperature of setting 26 through 8 minutes and spent; When C1 was the n=1 in the present embodiment, when promptly compressor adopted 100 hertz, the change curve of indoor temperature can be found out from curve, and indoor temperature has just reached the indoor target temperature of setting 26 through 25 minutes and spent; When C2 was the n=2 in the present embodiment, when promptly compressor adopted 37 hertz, the change curve of indoor temperature can be found out from curve, and indoor temperature has reached the indoor target temperature of setting 26 through 40 minutes and spent.
Since traditional control model often the indoor target temperature that reaches setting fast as control logic, often adopt the setting in the n=0 pattern, its actual indoor temperature change generated in case situation can be seen in 8 minutes like the shape of curve C 0 among the figure; The variable quantity of indoor temperature is 5 degree, is on average just once reducing less than two minutes, for older; The age children, or hinder the patient, this variations in temperature is too violent; And the adaptive capacity of human body is limited, and sensation can be felt bad very much, can only be fit to a minority and use.And adopt n=1 and the corresponding operating frequency of n=2 that is lower than peak frequency Fmax, then time corresponding is respectively 25 minutes and 75 minutes; It is respectively 5 minutes and 15 minutes that indoor temperature reduced for 1 used time of degree, because variations in temperature is slow, thus adapt to for user Geng Yi, and feeling that temperature is not in good time, also can in time adjust, improve comfortableness.
Another object of the present invention is the control method that has disclosed a kind of convertible frequency air-conditioner, after setting indoor target temperature, comprises three steps, and a, entering operating frequency are provided with pattern; B, in a plurality of operating frequencies, select the button of the frequency of user's tendency; C, affirmation, the frequency of deactivating is provided with pattern.The operating sequence of this method is to set indoor target temperature earlier, then sets operating frequency; Certainly, its reversed is come also to be fine, promptly set operating frequency earlier, then set indoor target temperature again, equally also can realize the object of the invention, and what influence is final effect do not had.
Promptly through button, just mode key is set the pattern that is provided with that gets into operating frequency; Adopt the unified step that is provided with in the present embodiment; See Fig. 4, show according to display unit that the corresponding pattern of operating frequency that present mode is set to user's setting gets final product being provided with in the step process of operating frequency.
In a plurality of operating frequencies showed, the user passed through button 0 through the button of the operating frequency of button selection user tendency among the embodiment one; The corresponding Fmax of 1,2,3 difference; 100 hertz, 37 hertz, Fmin (also can select) through increasing and decreasing buttons such as button up and down; The user can selection key 1, is 100 hertz purpose and reach the operating frequency of setting compressor.Confirm at last, the frequency setting pattern of deactivating, in the present embodiment one through by ACK button the expression of having selected that is provided with being confirmed once more.
After the affirmation; The control assembly of compressor reads in the operating frequency of the compressor of new settings; And, make the rotating speed of target of compressor be always the operating frequency of new settings, up to reaching the indoor target temperature that the user sets according to the rotating speed of the operating frequency of new settings adjustment compressor.
Embodiment two
Referring to Fig. 3, be the demonstration figure of the different set operating frequency of embodiment two, as shown in the figure: ordinate is the frequency Hz of compressor, abscissa is the shelves number n of the optional operating frequency of user; As can be seen from the figure, the highest frequency Fmax of compressor is 150 hertz, and low-limit frequency Fmin is 9 hertz, and wherein n is 0; 1,2,3,4; 5, N, wherein N=6.Promptly when adopting control, the user can select seven frequencies, is respectively when n=0, and corresponding frequency is Fmax, and when the user selected this pattern, it was that operating frequency is carried out the refrigerating/heating operation that compressor adopts highest frequency; By that analogy, when the user selects 1,2,3,4,5 respectively, during N (N=6), the operating frequency of corresponding compressor is 126.5 hertz, 103 hertz, and 79.5 hertz, 56 hertz, 32.5 hertz, 9 hertz.Each operating frequency of setting in the present embodiment two is equally distributed, and it is chosen mode and is: the highest frequency of establishing compressor is Fmax, and the low-limit frequency of compressor is Fmin, and the frequency interval that convertible frequency air-conditioner can be set is N; Remember that per two operating frequencies frequency number at interval is f=(Fmax-Fmin)/N, the optional frequency shelves number of user is n, and n is 0; 1,2 ... N; When the user selected the n shelves, the compressor operating frequency of actual set was Fmax-nf, and Fmax is 150 hertz in the present embodiment; Fmin is 9 hertz, and the frequency interval N that air-conditioner can be set is 6, and the frequency number of each frequency interval is f=(Fmax-Fmin)/N=(150-9)/6=23.5 hertz; When the user selected the 4th grade, promptly during n=4, corresponding operating frequency was the Fmax-nf=150-23.5*4=56 hertz; Meet with top description, explain between each operating frequency point to be identical at interval simultaneously, its distribution is uniform.
Adopt uniform operating frequency at interval; The user can use the cooling extent that each operating frequency is represented at interval to change the understanding that a perception is arranged through reality; Thereby experienced operators; Can select to meet the operating frequency point of own demand according to the indoor temperature and the expection of own physical comfort of reality.
In present embodiment two; The operating frequency pattern is set also is divided into three steps: get into operating frequency through button pattern is set; Adopt special operating frequency mode setting button among the embodiment two; After pressing the operating frequency mode setting button, display unit shows the operating frequency that can select, and 7 operating frequencies that can select are arranged in the present embodiment; The user changes the operating frequency that shows through options button up and down, during frequency that the operating frequency of demonstration is inclined to for the user, has promptly accomplished second step; At last, selected operating frequency is confirmed, set the operating frequency of compressor through proprietary affirmation button.
Embodiment three
When N is 20, can obtain 21 selectable operating frequencies, equating at interval between these 21 selectable operating frequencies through calculating; That is to say; These 21 selectable operating frequencies are divided equally, and still, the actual number that offers the operating frequency that the user selects is less than 21; In the present embodiment; Can in these 21 selectable operating frequencies, select 9 different working frequencies arbitrarily, what obtain at last is that the frequency interval between these 9 alternative operating frequencies is inequality.
Claims (6)
1. the control method of a convertible frequency air-conditioner; It is characterized in that preestablishing the operating frequency of indoor target temperature and compressor operating; After the control assembly of convertible frequency air-conditioner receives predefined indoor target temperature and operating frequency; Adopt the VFC mode operation, the maximum running frequency of compressor is not higher than the operating frequency that the user sets; Said user sets the operating frequency of compressor through the operating key on remote controller key or the convertible frequency air-conditioner indoor set; The operating frequency of said setting compressor has equally distributed many grades of numerical value, and it is chosen mode and is: the highest frequency of establishing compressor is Fmax, and the low-limit frequency of compressor is Fmin; The frequency interval that convertible frequency air-conditioner can be set is N, and then the frequency number of every grade of frequency interval is f=(Fmax-Fmin)/N, and the optional frequency shelves number of user is n; N is 0,1,2; ... N, when the user selected the n shelves, the operating frequency of actual compressor was Fmax-nf.
2. the control method of convertible frequency air-conditioner according to claim 1 is characterized in that the operating frequency of said compressor has the setting value more than two, and this setting value is evenly to distribute, or is uneven distribution.
3. the control method of convertible frequency air-conditioner according to claim 1 and 2 is characterized in that the operating frequency of said setting compressor is avoided the bad operating frequency value of compressor operating operating mode.
4. the control method of convertible frequency air-conditioner according to claim 1 is characterized in that it is 2～6 that said frequency interval is counted the scope of N.
5. according to the control method of claim 1 or 2 or 4 described convertible frequency air-conditioners, it is characterized in that the step that is provided with of said operating frequency is:
A, entering operating frequency are provided with pattern;
B, select the button of the frequency of users' tendency in a plurality of operating frequencies;
C, affirmation, the frequency of deactivating is provided with pattern.
6. the control method of convertible frequency air-conditioner according to claim 5 is characterized in that said step b for changing the information of the operating frequency that shows in the display unit through shift key, appears in the display unit up to the information of the operating frequency of user's tendency; And then carry out step c.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101939660A CN101718460B (en) | 2009-11-10 | 2009-11-10 | Control method of inverter air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101939660A CN101718460B (en) | 2009-11-10 | 2009-11-10 | Control method of inverter air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101718460A CN101718460A (en) | 2010-06-02 |
| CN101718460B true CN101718460B (en) | 2012-08-22 |
Family
ID=42433069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101939660A Active CN101718460B (en) | 2009-11-10 | 2009-11-10 | Control method of inverter air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101718460B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846377A (en) * | 2010-06-18 | 2010-09-29 | 广东志高空调有限公司 | Control method and device of frequency conversion air conditioner |
| CN102538127B (en) * | 2010-12-23 | 2015-04-01 | 珠海格力电器股份有限公司 | Handheld adjusting device for inverter air conditioner and handheld adjusting system for same |
| CN103307698B (en) * | 2012-03-16 | 2016-12-14 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof and device |
| CN102927655B (en) * | 2012-11-07 | 2015-05-13 | 华为技术有限公司 | Control method and device of inverter air conditioner and inverter air conditioner |
| CN103292418B (en) * | 2013-05-24 | 2015-11-25 | 广东美的制冷设备有限公司 | A kind of bimodulus of DC frequency converting air-conditioner compressor starts control method and system |
| CN104266305B (en) * | 2014-09-02 | 2017-02-22 | 广东美的集团芜湖制冷设备有限公司 | Variable-frequency air conditioner control device and method and variable-frequency air conditioner |
| CN106524409A (en) * | 2016-11-08 | 2017-03-22 | 顾皖平 | Air conditioner for setting air conditioner output air and input air temperature difference modes |
| CN111043706A (en) * | 2019-12-31 | 2020-04-21 | 宁波奥克斯电气股份有限公司 | Frequency conversion coefficient controllable control method and device of variable frequency air conditioner and air conditioner |
| CN114992782B (en) * | 2022-04-20 | 2023-12-08 | 南京天加环境科技有限公司 | Intelligent control method for multi-split air conditioner |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040032325A (en) * | 2002-10-09 | 2004-04-17 | 위니아만도 주식회사 | Control method of driving compressor of inverter air-conditioner |
| KR20060056510A (en) * | 2004-11-22 | 2006-05-25 | 엘지전자 주식회사 | Controlling method of inverter compressor in air conditioner |
-
2009
- 2009-11-10 CN CN2009101939660A patent/CN101718460B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040032325A (en) * | 2002-10-09 | 2004-04-17 | 위니아만도 주식회사 | Control method of driving compressor of inverter air-conditioner |
| KR20060056510A (en) * | 2004-11-22 | 2006-05-25 | 엘지전자 주식회사 | Controlling method of inverter compressor in air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101718460A (en) | 2010-06-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101718459B (en) | Method for controlling inverter air conditioner | |
| CN101718460B (en) | Control method of inverter air conditioner | |
| CN104748303B (en) | Air-conditioner control method, device and system based on wearable device | |
| CN110285533B (en) | Control method of air conditioner and air conditioner | |
| CN107101270A (en) | Control method, control device and the computer-readable recording medium of air conditioner | |
| CN102619771B (en) | Control method of comfortable wind of fan | |
| CN110749150B (en) | Rotating speed control system and method of refrigerating fan | |
| EP1684025A1 (en) | Air conditioner with variable-capacity compressor and control method therefor | |
| CN108332373A (en) | A kind of control method, device, storage medium and the air-conditioning of indoor environment state | |
| JPS59131843A (en) | Air conditioner | |
| CN105241004A (en) | Air conditioner control method and device and air conditioner | |
| CN103363622A (en) | Air conditioner with power tap positions and air conditioner power control method | |
| CN110410961B (en) | Control method of air conditioner and air conditioner | |
| CN108488988A (en) | Air conditioner refrigeration control method, air conditioner and storage medium | |
| CN101749830A (en) | Temperature control precision regulating method of variable frequency air conditioner | |
| CN107166649A (en) | Control method, control device and the air conditioner of independent assortment one-driving-one air conditioner | |
| CN110925942B (en) | Air conditioner control method and device | |
| US8474727B2 (en) | Air conditioner and method for controlling the same | |
| CN105222513A (en) | The noise control method of refrigerator and refrigerator | |
| WO2020192001A1 (en) | Air conditioner control method and apparatus, and computer storage medium | |
| CN108415293A (en) | The cooking control method and device of culinary art | |
| CN111735243B (en) | Compressor running frequency control method | |
| KR20010037882A (en) | Method of controlling operation of an air conditioner during sleeping | |
| CN107763809A (en) | Air conditioner energy-saving temperature control method, air conditioner and storage medium | |
| CN108980918B (en) | A kind of firepower adjusting method with Freehandhand-drawing heating power curve frequency-conversion microwave oven |
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 | ||
| ASS | Succession or assignment of patent right |
Owner name: MIDEA GROUP CO., LTD. Free format text: FORMER OWNER: MEIDI ELECTRIC APPLIANCES CO., LTD., GUANGDONG Effective date: 20131213 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 528300 FOSHAN, GUANGDONG PROVINCE TO: 528311 FOSHAN, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131213 Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee after: Midea Group Co., Ltd. Address before: 528300 Penglai Road, Beijiao Town, Shunde District, Guangdong, Foshan Patentee before: Meidi Electric Appliances Co., Ltd., Guangdong |