CN107782195A - A kind of water heater double-tube heat exchanger water pipe cleaning method and water heater - Google Patents
A kind of water heater double-tube heat exchanger water pipe cleaning method and water heater Download PDFInfo
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- CN107782195A CN107782195A CN201610793417.7A CN201610793417A CN107782195A CN 107782195 A CN107782195 A CN 107782195A CN 201610793417 A CN201610793417 A CN 201610793417A CN 107782195 A CN107782195 A CN 107782195A
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- water
- heat exchanger
- tube heat
- double
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G13/00—Appliances or processes not covered by groups F28G1/00 - F28G11/00; Combinations of appliances or processes covered by groups F28G1/00 - F28G11/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
Abstract
The present invention relates to technical field of water heaters, more particularly to a kind of water heater double-tube heat exchanger water pipe cleaning method and water heater.Water heater double-tube heat exchanger water pipe cleaning method is specially：When the time interval apart from last time scavenging period is more than prefixed time interval, the water pipe of the double-tube heat exchanger of water heater is cleaned.Wherein, prefixed time interval is arranged to the time of slight dirt deposits (dirt will not form block) on pipe inner wall.Thus, using time interval as foundation, the operation of cleaning water pipe can automatically, be periodically started, just by dirt removal, and then to avoid depositing a large amount of dirts on pipe inner wall when slight dirt deposits on pipe inner wall.The water heater of the present invention applies above-mentioned water heater double-tube heat exchanger water pipe cleaning method, and the pipe inner wall of its double-tube heat exchanger will not deposit a large amount of dirts.
Description
Technical field
The present invention relates to technical field of water heaters, more particularly to a kind of water heater double-tube heat exchanger water pipe cleaning method and heat
Hydrophone.
Background technology
Water heater is heated using double-tube heat exchanger to current more, and double-tube heat exchanger includes two pipes being set-located
Road, the pipeline that current are flowed through are called water pipe.Often there is scale formation in the inwall of the water pipe of double-tube heat exchanger, and dirtiness resistance occupies
A big chunk of heat exchange entire thermal resistance, causing the heat exchange efficiency of whole double-tube heat exchanger reduces, form the significant wastage of the energy.
At present, user can ignore the water pipe cleaning in double-tube heat exchanger mostly, that is to say, that unless water heater is asked
Topic, otherwise will not be aware of the water pipe needed in cannula cleaning heat exchanger；Or when needing the water in cannula cleaning heat exchanger
Guan Shi, a large amount of dirts (such as dirt has lumpd) have been deposited on pipe inner wall, and cleaning is difficult.
Therefore, a kind of water heater double-tube heat exchanger water pipe cleaning that can avoid depositing a large amount of dirts on pipe inner wall is needed badly
Method and pipe inner wall will not deposit the water heater of a large amount of dirts.
The content of the invention
On the one hand the purpose of the present invention is：It is proposed that one kind can avoid depositing a large amount of dirts on double-tube heat exchanger pipe inner wall
The water heater double-tube heat exchanger water pipe cleaning method of dirt.
The purpose of the present invention further aspect is that：It is proposed that a kind of double-tube heat exchanger pipe inner wall will not deposit a large amount of dirts
Water heater.
To use following technical scheme up to this purpose, the present invention：
One aspect of the present invention provides a kind of water heater double-tube heat exchanger water pipe cleaning method, apart from last time scavenging period
When time interval is more than prefixed time interval, the water pipe of the double-tube heat exchanger of water heater is cleaned.
According to the present invention, comprise the following steps：S1, user not use water in the case of, read last time scavenging period；
Whether S2, the time interval of judging distance last time scavenging period are more than prefixed time interval, if so, step S3 is then performed, if it is not,
Then terminate cleaning procedure；S3, clean water heater double-tube heat exchanger water pipe.
According to the present invention, step S1 includes following sub-step：S1.1, detect water heater water tank in fluctuating temperature feelings
Condition；S1.2, whether user is judged according to fluctuating temperature situation with water, if so, then terminating cleaning procedure, if it is not, then performing step
Rapid S1.3；S1.3, read last time scavenging period.
According to the present invention, last time scavenging period is the date, and prefixed time interval is in units of day.
According to the present invention, the step of the water pipe for the double-tube heat exchanger for cleaning water heater in：Make current entrainment collision ball in water
Flowed in pipe, the inwall that ball and water pipe are collided during current flow constantly rubs, and removes the dirt on inwall.
According to the present invention, collision ball is bouncing ball.
Include following sub-step according to the present invention, the step of the water pipe for the double-tube heat exchanger for cleaning water heater：Step a, control
The current of system entrainment collision ball flowed for the first predetermined flow time in water pipe in the first direction；Step b, current are controlled to stop stream
The dynamic first preset stopping time；Step c, control current flowed for the second predetermined flow time in water pipe in a second direction；Step
D, current are controlled to stop the second predetermined flow time of flowing；Step e, return to step a, until returning preset times.
According to the present invention, current are controlled alternately to be flowed with second direction in the first direction using reversing arrangement；Reversing arrangement
The first upper hose and the first downcomer that are connected including one end with water pipe, the second upper hose connected with the other end of water pipe and
Second downcomer and be respectively arranged on the first upper hose, the first downcomer, the second upper hose and the second downcomer first on
Water valve, first time water valve, the second water supply valve and second time water valve.
According to the present invention, the first upper hose and the second upper hose are connected to total upper hose, and water pump is provided with total upper hose；
In step a：Keep the first water supply valve and second time water valve is opened simultaneously while the second water supply valve of holding and first time water valve are closed,
Start water pump and keep it to operate for the first predetermined flow time；In stepb：Switch off the pump and keep water pump to shut down first
The preset stopping time；In step c：Keep the second water supply valve and first time water valve is opened and the first water supply valve of holding and the simultaneously
Two times water valve is closed, and is started water pump and is kept it to operate for the second predetermined flow time；In step d：Switch off the pump and keep water
Pump shut down for the second preset stopping time.
Another aspect of the present invention provides a kind of water heater, and the water heater is using any of the above-described water heater double-tube heat exchanger
The water heater of water pipe cleaning method.
The above-mentioned technical proposal of the present invention has the following advantages that：
The water heater double-tube heat exchanger water pipe cleaning method of the present invention, is more than in the time interval apart from last time scavenging period
During prefixed time interval, the water pipe of the double-tube heat exchanger of water heater is cleaned.Wherein, prefixed time interval is arranged on pipe inner wall
The time of slight dirt deposits (dirt will not form block).Thus, using time interval as foundation, can automatically, periodically start clear
The operation of wash water pipe, just by dirt removal, and then to be avoided when slight dirt deposits on pipe inner wall on pipe inner wall
Deposit a large amount of dirts.
The water heater of the present invention, using the water heater of above-mentioned water heater double-tube heat exchanger water pipe cleaning method, its sleeve pipe changes
Hot device pipe inner wall will not deposit the water heater of a large amount of dirts.
Brief description of the drawings
Fig. 1 is the flow chart for the water heater double-tube heat exchanger water pipe cleaning method that the specific embodiment of the invention provides；
Fig. 2 is the double-tube heat exchanger and reversing arrangement used in Fig. 1 water heater double-tube heat exchanger water pipe cleaning method
Structural representation；
Fig. 3 is the partial structural diagram of Fig. 2 double-tube heat exchanger, wherein including collision ball.
In figure：
1：Double-tube heat exchanger；2：Water pipe；3：Reversing arrangement；4：First upper hose；5：First downcomer；6：Water on second
Pipe；7：Second downcomer；8：First water supply valve；9：First time water valve；10：Second water supply valve；11：Second time water valve；12：On total
Water pipe；13：Total downcomer；14：Water pump；15：Collide ball.
Embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by embodiment.
Embodiment one
Referring to figs. 1 to Fig. 3, in the present embodiment, there is provided a kind of water heater double-tube heat exchanger water pipe cleaning method, specifically
For：When the time interval apart from last time scavenging period is more than prefixed time interval, the water of the double-tube heat exchanger 1 of water heater is cleaned
Pipe 2.Wherein, prefixed time interval is arranged to the time of slight dirt deposits on the inwall of water pipe 2, namely on the inwall of water pipe 2
Dirt also without the caked time.The mode of the water pipe 2 of the double-tube heat exchanger 1 of water heater is cleaned, is carried using water heater
Automated cleaning mode.
Thus, using time interval as foundation, the operation of cleaning water pipe 2 can automatically, be periodically started, with water pipe 2
Just by dirt removal when slight dirt deposits on wall, and then avoid depositing a large amount of dirts on the inwall of water pipe 2.
Further, reference picture 1, in the present embodiment, water heater double-tube heat exchanger water pipe cleaning method comprise the following steps：
S0, holding state；
S1, user not use water in the case of, read last time scavenging period, wherein last time scavenging period be the date (i.e.
Certain year is in such a month, and on such a day).
Whether S2, the time interval of judging distance last time scavenging period are more than prefixed time interval, if so, then performing step
S3, if it is not, then terminating cleaning procedure；Wherein, prefixed time interval is in units of day.
S3, clean water heater double-tube heat exchanger 1 water pipe 2.
In the present embodiment, in step S1, user is determined either with or without with water by the fluctuating temperature situation in water tank, tool
Body is following sub-step：
S1.1, detect water heater water tank in fluctuating temperature situation；
S1.2, whether user is judged according to fluctuating temperature situation with water, if so, then terminating cleaning procedure, if it is not, then holding
Row step S1.3；
S1.3, read last time scavenging period.
Certainly, the present invention is not limited to this, in other embodiments, can also be determined using other modes user whether with
Water, for example, setting whether sensor there are flowing out to detect in outlet pipe on outlet pipe.
Further, in the present embodiment, reference picture 2 and Fig. 3, the step of water pipe 2 for the double-tube heat exchanger 1 for cleaning water heater
In (step S3), current entrainment collision ball 15 is flowed in water pipe 2, ball 15 and water pipe 2 are collided during current flow
Inwall constantly rub, dirt loosen, come off, excluded with current, so remove inwall on dirt.In the present embodiment, touch
Billiards 15 is bouncing ball, on the one hand bouncing ball will not damage the inwall of water pipe 2, on the other hand touches wall by it and quickly rebounds to increase
Rebuffed number, and then increase elimination efficiency.Preferably, filter screen is provided with the both ends of the water pipe 2 of double-tube heat exchanger, ball will be collided
15 are limited in the water pipe 2 of double-tube heat exchanger, and during no clean, collision ball 15 is also stayed in water pipe, now also can be with water
Tube wall collides decontamination.
Certainly, the present invention is not limited to this, and the automatic cleaning mode that other water heaters can be used to carry is cleaned, such as
Chemical cleaning mode.
Further, in the present embodiment, current are controlled alternately to be flowed with second direction in the first direction using reversing arrangement 3
It is dynamic.Reversing arrangement 3 includes the first upper hose 4 connected with one end of water pipe 2 and the first downcomer 5, the other end company with water pipe 2
The second logical upper hose 6 and the second downcomer 7 and it is respectively arranged on the first upper hose 4, the first downcomer 5, the second upper hose 6
With the first water supply valve 8 on the second downcomer 7, first time water valve 9, the second water supply valve 10 and second time water valve 11.Wherein, first
When water supply valve 8 is opened, the first upper hose 4 turns on, and when the first water supply valve 8 is closed, the first upper hose 4 disconnects；Second water supply valve 10
During opening, the second upper hose 6 turns on, and when the second water supply valve 10 is closed, the second upper hose 6 disconnects；During first time opening of water valve 9,
First downcomer 5 turns on, and when first time water valve 9 is closed, the first downcomer 5 disconnects；During second time opening of water valve 11, second time water
Pipe 7 turns on, and when second time water valve 11 is closed, the second downcomer 7 disconnects.Also, the first upper hose 4 and the second upper hose 6 connect
In total upper hose 12, water pump 14 is provided with total upper hose 12.First water supply valve 8, first time water valve 9, the and of the second water supply valve 10
Second time water valve 11 is both preferably magnetic valve.
Specifically, the step of cleaning water pipe 2 of the double-tube heat exchanger 1 of water heater (step S3) includes following sub-step：
Step a, the first water supply valve 8 and second time water valve 11 is kept to open and keep simultaneously under the second water supply valve 10 and first
Water valve 9 is closed, and is started water pump 14 and is kept it to operate for the first predetermined flow time, thus, the current of control entrainment collision ball 15
The first predetermined flow time (preferably the first predetermined flow time is 3min) is flowed in water pipe 2 in the first direction, specifically, water
Stream flow to total downcomer 13 from total upper hose 12 through the first upper hose 4, the water pipe 2 of double-tube heat exchanger, the second downcomer 7；
Step b, switch off the pump and 14 and keep water pump 14 to shut down for the first preset stopping time, thus control current to stop
Flow the first preset stopping time (preferably the first preset stopping time is 2min)；
Step c, the second water supply valve 10 and first time water valve 9 is kept to open and keep simultaneously under the first water supply valve 8 and second
Water valve 11 is closed, and is started water pump 14 and is kept it to operate for the second predetermined flow time, thus controls current in a second direction in water
The second predetermined flow time (preferably the second predetermined flow time is equal with the first predetermined flow time, is 3min) is flowed in pipe 2,
Specifically, current flow to Zong Xiashui from total upper hose 12 through the second upper hose 6, the water pipe 2 of double-tube heat exchanger 1, the first downcomer 5
Pipe 13；
Step d, switch off the pump and 14 and keep water pump 14 to shut down for the second preset stopping time, thus control current to stop
Flow the second preset stopping time (preferably the second preset stopping time is equal with the first preset stopping time, is 2min)；
Step e, return to step a, until returning preset times (being preferably 3 times), i.e., until step a to step d is performed
Preset times, are then back to holding state.
Embodiment two
In the present embodiment, there is provided a kind of water heater, the water heater are the water heater double-tube heat exchanger of Application Example one
The water heater of water pipe cleaning method, the inwall of the water pipe 2 of its double-tube heat exchanger 1 will not deposit a large amount of dirts.
Specifically, refer to Fig. 1 to Fig. 3, the water heater of the present embodiment include control module, above-mentioned double-tube heat exchanger 1, on
Reversing arrangement 3, total upper hose 12 and total downcomer 13 are stated, collision ball 15 is provided with the water pipe 2 of double-tube heat exchanger 1, in water pipe 2
Both ends set filter screen, and collision ball 15 is limited in water pipe 2.Control module controls the water heater apart from last time scavenging period
Time interval clean when being more than prefixed time interval water heater double-tube heat exchanger 1 water pipe 2.Wherein, control module stores
Prefixed time interval, and the prefixed time interval is arranged to the time of slight dirt deposits on the inwall of water pipe 2, namely water pipe
Dirt on 2 inwall is also without the caked time.The mode of the water pipe 2 of the double-tube heat exchanger 1 of water heater is cleaned using heat
The automated cleaning mode that hydrophone carries.
More specifically, the water heater of the present embodiment performs following cleaning step：
S1.1, control module control associated components detect the fluctuating temperature situation in the water tank of water heater；
Whether S1.2, control module judge user with water according to fluctuating temperature situation, if so, then terminate cleaning procedure,
If it is not, then perform step S1.3；
S1.3, control module read last time scavenging period；
S2, control module by last time scavenging period compared with current time, between the time of judging distance last time scavenging period
Every whether being more than prefixed time interval, if so, step S3 is then performed, if it is not, then terminating cleaning procedure；Wherein, between preset time
Every in units of day；
The following is step a to step e is step S3:
Step a, control module controls the first water supply valve 8 and second time water valve 11 to open and control the second water supply valve 10 simultaneously
Closed with first time water valve 9, and control module starts water pump 14 and keeps it to operate for the first predetermined flow time, thus, control
The current of system entrainment collision ball 15 flow first predetermined flow time (preferably the first predetermined flow in water pipe 2 in the first direction
Time is 3min), specifically, current from total upper hose 14 through the first upper hose 4, the water pipe 2 of double-tube heat exchanger, the second downcomer
7 flow to total downcomer 13；
Step b, control module control water pump 14 is closed and controls water pump 14 to keep shutting down for the first preset stopping time,
Thus control current to stop flowing the first preset stopping time (preferably the first preset stopping time is 2min)；
Step c, control module controls the second water supply valve 10 and first time water valve 9 to open and control the first water supply valve 8 simultaneously
Closed with second time water valve 11, and control water pump 14 to start and keep it to operate for the second predetermined flow time, thus control water
Stream flows the second predetermined flow time (preferably the second predetermined flow time and the first predetermined flow in water pipe 2 in a second direction
Time is equal, is 3min), specifically, current are from water pipe 2, first of total upper hose 12 through the second upper hose 6, double-tube heat exchanger 1
Downcomer 5 flow to total downcomer 13；
Step d, control module control water pump 14 is closed and keeps water pump 14 to shut down for the second preset stopping time, thus
Control current stopping the second preset stopping time of flowing (preferably the second preset stopping time is equal with the first preset stopping time,
For 2min)；
Step e, return to step a, until returning preset times (being preferably 3 times), i.e., until step a to step d is performed
Preset times, are then back to holding state.
The technical principle of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain the present invention's
Principle, and limiting the scope of the invention can not be construed in any way.Based on explanation herein, the technology of this area
Personnel would not require any inventive effort the other embodiments that can associate the present invention, and these modes are fallen within
Within protection scope of the present invention.
Claims (10)
- A kind of 1. water heater double-tube heat exchanger water pipe cleaning method, it is characterised in that：When the time interval apart from last time scavenging period is more than prefixed time interval, the water of the double-tube heat exchanger of water heater is cleaned Pipe.
- 2. water heater double-tube heat exchanger water pipe cleaning method according to claim 1, it is characterised in that including following step Suddenly：S1, user not use water in the case of, read last time scavenging period；Whether the time interval of last time scavenging period described in S2, judging distance is more than prefixed time interval, if so, then performing step S3, if it is not, then terminating cleaning procedure；S3, clean water heater double-tube heat exchanger water pipe.
- 3. water heater double-tube heat exchanger water pipe cleaning method according to claim 2, it is characterised in thatThe step S1 includes following sub-step：S1.1, the detection water heater water tank in fluctuating temperature situation；S1.2, whether user is judged according to the fluctuating temperature situation with water, if so, then terminating cleaning procedure, if it is not, then holding Row step S1.3；S1.3, read the last time scavenging period.
- 4. the water heater double-tube heat exchanger water pipe cleaning method according to any one of claim 1-3, it is characterised in thatThe last time scavenging period is the date, and the prefixed time interval is in units of day.
- 5. the water heater double-tube heat exchanger water pipe cleaning method according to any one of claim 1-3, it is characterised in thatIn the step of cleaning the water pipe of the double-tube heat exchanger of water heater：Current entrainment collision ball is set to be flowed in water pipe, in current The inwall of the collision ball and the water pipe constantly rubs during flowing, removes the dirt on the inwall.
- 6. water heater double-tube heat exchanger water pipe cleaning method according to claim 5, it is characterised in thatThe collision ball is bouncing ball.
- 7. the water heater double-tube heat exchanger water pipe cleaning method according to claim 5 or 6, it is characterised in thatThe step of water pipe for cleaning the double-tube heat exchanger of water heater, includes following sub-step：Step a, the current of control entrainment collision ball flowed for the first predetermined flow time in water pipe in the first direction；Step b, the current are controlled to stop the first preset stopping time of flowing；Step c, the current are controlled to flow for the second predetermined flow time in water pipe in a second direction；Step d, the current are controlled to stop the second preset stopping time of flowing；Step e, the step a is returned to, until returning preset times.
- 8. water heater double-tube heat exchanger water pipe cleaning method according to claim 7, it is characterised in thatThe current are controlled alternately to be flowed along the first direction and the second direction using reversing arrangement；The reversing arrangement includes the first upper hose for connect with one end of the water pipe and the first downcomer and the water pipe The other end connection the second upper hose and the second downcomer and be respectively arranged on first upper hose, first downcomer, Second upper hose and the first water supply valve, first time water valve, the second water supply valve and second time water on second downcomer Valve.
- 9. water heater double-tube heat exchanger water pipe cleaning method according to claim 8, it is characterised in thatFirst upper hose and second upper hose are connected to total upper hose, and water pump is provided with total upper hose；In step a：First water supply valve and second time water valve is kept to open and keep second water supply valve simultaneously Closed with first time water valve, start the water pump and keep it to operate the first predetermined flow time；In stepb：Close the water pump and keep the water pump to shut down the first preset stopping time；In step c：Second water supply valve and first time water valve is kept to open and keep first water supply valve simultaneously Closed with second time water valve, start the water pump and keep it to operate the second predetermined flow time；In step d：Close the water pump and keep the water pump to shut down the second preset stopping time.
- 10. a kind of water heater, it is characterised in that the water heater is the water heater any one of using claim 1-9 The water heater of double-tube heat exchanger water pipe cleaning method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610793417.7A CN107782195B (en) | 2016-08-31 | 2016-08-31 | Water pipe cleaning method for water heater sleeve heat exchanger and water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610793417.7A CN107782195B (en) | 2016-08-31 | 2016-08-31 | Water pipe cleaning method for water heater sleeve heat exchanger and water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107782195A true CN107782195A (en) | 2018-03-09 |
| CN107782195B CN107782195B (en) | 2020-05-26 |
Family
ID=61451739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610793417.7A Active CN107782195B (en) | 2016-08-31 | 2016-08-31 | Water pipe cleaning method for water heater sleeve heat exchanger and water heater |
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| Country | Link |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57184896A (en) * | 1981-05-11 | 1982-11-13 | Toshiba Corp | Foreign matter clearing device of heat exchanger |
| CN101358819A (en) * | 2008-09-01 | 2009-02-04 | 陈金玉 | Total-system and full-automatic inner cleaner for water heater and cleaning method thereof |
| CN104075616A (en) * | 2014-06-24 | 2014-10-01 | 约克（中国）商贸有限公司 | Online cleaning method and cleaning system for heat exchanger of cold water main engine of central air conditioner |
| CN204388356U (en) * | 2015-01-14 | 2015-06-10 | 云南利佳新能源科技有限公司 | With the air-source water heater of automatic flushing device |
| CN204678928U (en) * | 2015-05-12 | 2015-09-30 | 青岛海尔新能源电器有限公司 | Casing type heat exchanging device and there is its carbon dioxide heat pump water heater |
| CN105651108A (en) * | 2016-03-16 | 2016-06-08 | 合肥美的暖通设备有限公司 | Cleaning device and cleaning method of heat exchanger |
| CN105696293A (en) * | 2014-11-24 | 2016-06-22 | 佛山市顺德区美的电热电器制造有限公司 | Cleaning prompt method and system for steam generation device, and garment steamer |
-
2016
- 2016-08-31 CN CN201610793417.7A patent/CN107782195B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57184896A (en) * | 1981-05-11 | 1982-11-13 | Toshiba Corp | Foreign matter clearing device of heat exchanger |
| CN101358819A (en) * | 2008-09-01 | 2009-02-04 | 陈金玉 | Total-system and full-automatic inner cleaner for water heater and cleaning method thereof |
| CN104075616A (en) * | 2014-06-24 | 2014-10-01 | 约克（中国）商贸有限公司 | Online cleaning method and cleaning system for heat exchanger of cold water main engine of central air conditioner |
| CN105696293A (en) * | 2014-11-24 | 2016-06-22 | 佛山市顺德区美的电热电器制造有限公司 | Cleaning prompt method and system for steam generation device, and garment steamer |
| CN204388356U (en) * | 2015-01-14 | 2015-06-10 | 云南利佳新能源科技有限公司 | With the air-source water heater of automatic flushing device |
| CN204678928U (en) * | 2015-05-12 | 2015-09-30 | 青岛海尔新能源电器有限公司 | Casing type heat exchanging device and there is its carbon dioxide heat pump water heater |
| CN105651108A (en) * | 2016-03-16 | 2016-06-08 | 合肥美的暖通设备有限公司 | Cleaning device and cleaning method of heat exchanger |
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| Publication number | Publication date |
|---|---|
| CN107782195B (en) | 2020-05-26 |
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