CN109520138A - A kind of water heater and its detection method with detection device - Google Patents

A kind of water heater and its detection method with detection device Download PDF

Info

Publication number
CN109520138A
CN109520138A CN201811124917.7A CN201811124917A CN109520138A CN 109520138 A CN109520138 A CN 109520138A CN 201811124917 A CN201811124917 A CN 201811124917A CN 109520138 A CN109520138 A CN 109520138A
Authority
CN
China
Prior art keywords
air blower
operating rate
speed
burner
water heater
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.)
Pending
Application number
CN201811124917.7A
Other languages
Chinese (zh)
Inventor
程洪
向熹
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.)
Zhongshan City Hengyue Electrical Appliance Co Ltd
Original Assignee
Zhongshan City Hengyue Electrical Appliance Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhongshan City Hengyue Electrical Appliance Co Ltd filed Critical Zhongshan City Hengyue Electrical Appliance Co Ltd
Priority to CN201811124917.7A priority Critical patent/CN109520138A/en
Publication of CN109520138A publication Critical patent/CN109520138A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/20Arrangement or mounting of control or safety devices
    • F24H9/2007Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2035Arrangement or mounting of control or safety devices for water heaters using fluid fuel

Abstract

The invention discloses a kind of water heater and its detection method with detection device, the burner and air blower of the water heater body is each provided in the combustion box and is communicated to the entrance of the burner described in the outlet of the air blower, the entrance of the air blower is communicated to outside the combustion box, the gas pipeline is communicated in the combustion box and the gas pipeline is equipped with the gas valve, the detection device is equipped in the air blower, the entrance and exit of the water body pipeline is located at the two sides of the combustion box, the exhaust pipe is communicated at the top of the combustion box, the detector of the detection device is located in the air blower, the output end of the detector is connected to the input terminal of the processor, the output end of the processor is connected to the gas valve, alarm and air blower.The present invention solves in present most of water heaters that exhaust gas is not easy to handle, improper ventilation and the problem of be unable to the aging conditions of real-time detection air blower.

Description

A kind of water heater and its detection method with detection device
Technical field
The present invention relates to technical field of water heaters, specially a kind of water heater and its detection method with detection device.
Background technique
Traditional water heater is very dangerous going out gas by free convection burning heel row, because when accumulated gases exist When in room, since the carbon monoxide that water heater generates is fatal, so installation is very dangerous indoors.Provide one Kind improved water heater, direct ventilation/ventilation water heater are provided with air blower after combustion by a gas (including oxidation Carbon) discharge is outdoor and improves efficiency of combustion.Air blower can provide more air for burn to generate more heats.So And the blocking or aging of air blower cause the air draught in water heater bad, burning can generate more carbon monoxide.So And user may think that he/her using direct vent water heater be it is safe, blocked or always without recognizing that water heater has The air blower of change is still dangerous.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of water heater and its detection method with detection device, Solve in present most of water heaters that exhaust gas is not easy to handle, improper ventilation and the aging conditions for being unable to real-time detection air blower The problem of.
(2) technical solution
To achieve the above object, the invention provides the following technical scheme: a kind of water heater with detection device, including heat Hydrophone ontology, the water heater body include combustion box, water body pipeline, burner, detection device, exhaust pipe, air blower, gas Body pipeline, gas valve and processor, the burner and air blower are each provided in the combustion box and the air blower The entrance of the burner is communicated to described in outlet, the entrance of the air blower is communicated to outside the combustion box, the gas Body pipeline is communicated in the combustion box and the gas pipeline is equipped with the gas valve, is equipped with the inspection in the air blower Device is surveyed, the entrance and exit of the water body pipeline is each provided at the two sides of the combustion box and the water body pipeline is located at the combustion In saggar, the exhaust pipe is communicated at the top of the combustion box, the detection device includes detector, processor and report Alert device, the detector are located in the air blower, and the output end of the detector is connected to the input terminal of the processor, institute The output end for stating processor is connected to the gas valve, alarm and air blower.
Preferably, the tube body of the water body pipeline extends in the combustion box and the tube body of the water body pipeline is S-type Structure, the water body pipeline are located at the top of the combustion box.
Preferably, a delay controller is additionally provided in the processor, the output end of the delay controller is connected to institute The input terminal of air blower is stated, the output end of the delay controller is connected to the processor.
Preferably, the detector is velocity sensor, and the output end of the velocity sensor is connected to the processor Input terminal.
A kind of detection method of the water heater with detection device a kind of according to above scheme, including walk as follows It is rapid:
(1) start air blower, and detect the speed of air blower after air blower operation, processor is before air blower operation Three velocity intervals are set, respectively First Speed range, second speed range and third speed range;
(2) operating rate of detector real-time detection air blower and part operating rate numerical value is sent to the processor It is interior, the operating rate of air blower is compared with First Speed range, then when the speed of air blower is in First Speed range Start to supply gas to burner when interior, or when the operating rate of air blower exceeds First Speed range, in burner not Supply gas simultaneously stops air blower;
(3) operating rate of air blower is detected again after a certain period of time in burner heating water, and by the work of air blower Speed is compared with second speed range, then when the operating rate of air blower is within the scope of second speed, is continued to combustion Burner supply gas and the operating rate for keeping air blower;When the speed of air blower is more than second speed range, stop to combustion Gas is supplied in burner;
(4) kept for air blower operation a period of time after water heater stops supplying gas to burner, then detection drum The operating rate of the operating rate of blower, air blower is compared with third speed range, then in the speed of air blower Air blower is closed after predetermined time in three velocity intervals.
Preferably, in step (3), the input terminal of air blower is connected to the delay controller, and the air blower continues Work a period of time.
Preferably, in step (2), when the operating rate of air blower is more than First Speed range, alarm starts work Make;In step (3), when the operating rate of air blower is more than second speed range, alarm work;In step (4), when When the operating rate of air blower is more than third speed range, alarm is started to work.
(3) beneficial effect
The present invention provides a kind of water heaters with detection device.Have it is following the utility model has the advantages that
Air blower of the present invention is located at below burner, enters water heater body's to provide by blower inlet Air stream, and burner is blown by blower export.Air blower facilitates the mixing of air and gas.In air blower It is provided with motor (not shown).It is well known that the speed of motor is directly proportional to the air mass flow of supplied burner.In other words It says, the speed of air blower is higher, and the air supplied to burner is more.On the contrary, the speed of air blower is lower, supplied burner Air it is fewer.The operating rate that air blower is detected in air blower is arranged in detection device.
First Speed range and the storage of second speed range in the processor of detection device.First Speed Range Representation is in warm Hydrophone ontology begins to warm up water and air blower has run the goal pace of air blower before a period of time.Second speed range It indicates when the goal pace of burner air blower when optimum air-combustion gas is than lower burning.It is based on the gas by gas valve It flow velocity and being controlled by the air stream that air blower provides, it is well known that efficiency can reduce air blower in use for some time, I Be referred to as aging, when air blower with usual identical power to supply, the deficiency of air of supplied burner.For this purpose, we Minimum acceptable speed is defined, burner there may be imperfect combustion at such speeds.For abnormal air blower, such as its Exhaust passage blocking, the internal pressure of this air blower is very high, needs to increase compensated with air.This air blower is when starting and running It will be with high speed.This high speed is defined as the acceptable speed of highest.When the speed of air blower is higher than most When height is subjected to speed, water heater will face the excessive danger of carbon monoxide.So detection method of the present invention utilizes drum Extra gas emission to outdoor, and is detected the aging performance of air blower by blower.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of water heater body of the invention.
In figure: 1, rack;2, fixed plate;3, rotary electric machine;4, workpiece;5, limit hole;6, limited block;7, limited post;8, Polishing motor;9, moving guide rail;10, polishing cutter head;11, water storage cylinder;12, dedusting pumps;13, overflow pipe;14, limiting groove;15, Position limiting clamp ear;16, fixing bolt;17, water storage tank;18, waste pipe;19, waste water cylinder;20, control assembly;21, Limit Bearing.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, the present invention provides a kind of technical solution:
A kind of water heater with detection device, including water heater body 1, the water heater body 1 include combustion box 2, Water body pipeline 3, burner 4, detection device 5, exhaust pipe 6, air blower 7, gas pipeline 10, gas valve 11 and processor 12, the burner 4 and air blower 7 are each provided in the combustion box 2 and the outlet 9 of the air blower is connected to described be communicated to The entrance of the burner 4, the entrance 8 of the air blower are communicated to outside the combustion box 2, and the gas pipeline 10 is communicated to institute It states in combustion box 2 and the gas pipeline 10 is equipped with the gas valve 11, be equipped with the detection device 5 in the air blower 7, The entrance and exit of the water body pipeline 3 is located at the two sides of the combustion box 2 and the water body pipeline 3 is located at the combustion box 2 Interior, the top of the combustion box 2 is communicated with the exhaust pipe 6, the detection device 5 include detector 13, processor 12 with And alarm 15, the detector 13 are located in the air blower 7, the output end of the detector 13 is connected to the processor 12 input terminal, the output end of the processor 12 are connected to the gas valve 11, alarm 15 and air blower 7.
In the present embodiment, the tube body of the water body pipeline 3 extends to the interior and described water body pipeline 3 of the combustion box 2 The S-type structure of tube body, the water body pipeline 3 are located at the top of the combustion box 2.
In the present embodiment, be additionally provided with a delay controller 14 in the processor 12, the delay controller 14 it is defeated Outlet is connected to the input terminal of the air blower 7, and the input terminal of the delay controller 14 is connected to the processor 12.
In the present embodiment, the detector 13 is velocity sensor, and the output end of the velocity sensor is connected to institute State the input terminal of processor 12.
A kind of detection method of the water heater with detection device a kind of according to above scheme, it is characterised in that: Include the following steps:
(1) start air blower 7, and detect the speed of air blower 7 after the operation of air blower 7, processor 12 is transported in air blower 7 Three velocity intervals are set before row, respectively First Speed range, second speed range and third speed range;
(2) operating rate of 13 real-time detection air blower 7 of detector and part operating rate numerical value is sent to the processing In device 12, the operating rate of air blower 7 is compared with First Speed range, then when the speed of air blower 7 is in the first speed Start to supply gas to burner 4 when in degree range, or when the operating rate of air blower 7 exceeds First Speed range, combustion Gas is not supplied in burner 4 and stops air blower 7;
(3) operating rate that water detects air blower 7 again after a certain period of time is heated in burner 4, and by the work of air blower 7 Make speed to be compared with second speed range, then when the operating rate of air blower 7 is within the scope of second speed, continue to Burner 4 supplies gas and keeps the operating rate of air blower 7;When 7 speed of air blower are more than second speed range, stop Gas is supplied into burner 4;
(4) it is kept for the operation a period of time of air blower 7 after water heater stops supplying gas to burner 4, then detected The operating rate of the operating rate of air blower 7, air blower 7 is compared with third speed range, then in the work of air blower 7 Air blower 7 is closed after predetermined time of the speed within the scope of third speed.
In the present embodiment, in step 3, the input terminal of air blower 7 is connected to the delay controller 14, the air blast Machine 7 continues working a period of time.
In the present embodiment, in step (2), when the operating rate of air blower 7 is more than First Speed range, alarm 15 start to work;In step (3), when the operating rate of air blower 7 is more than second speed range, alarm 15 works;? In step (4), when the operating rate of air blower 7 is more than third speed range, alarm 18 is started to work.
In Fig. 1, air blower 7 of the present invention is located at 4 lower section of burner, to provide entrance by 7 entrance of air blower The air stream of water heater body 1, and burner 4 is blown by blower export 9.It is gentle that air blower 7 facilitates air The mixing of body.Motor (not shown) is provided in air blower 7.It is well known that the speed of motor and the air of supplied burner Flow is directly proportional.In other words, the speed of air blower 7 is higher, and the air supplied to burner 4 is more.On the contrary, air blower 7 Speed it is lower, the air of supplied burner 4 is fewer.The work that air blower 7 is detected in air blower 7 is arranged in detection device 5 Speed.
First Speed range and second speed range are stored in the processor 12 of detection device 5.First Speed range table Show the goal pace of the air blower 7 before water heater body 1 begins to warm up water and air blower 7 has run a period of time.The Two velocity intervals are indicated when the goal pace of the air blower 7 when optimum air-combustion gas is than lower burning of burner 4.It is based on passing through It the gas flow rate of gas valve 11 and is controlled by air stream that air blower 7 provides, it is well known that air blower 7 is when using one section Between behind efficiency can reduce, we term it aging, when air blower 7 with usual identical power to supply, supplied burner 9 Deficiency of air.For this purpose, we define minimum acceptable speed, burner 9 may have imperfect combustion at such speeds.It is right In abnormal air blower, such as the blocking of its exhaust passage, the internal pressure of this air blower 7 is very high, needs to increase compensated with air.It is this Air blower 7 will be with high speed when starting and running.This high speed is defined as the acceptable speed of highest. When the speed of air blower 7, which is higher than highest, is subjected to speed, water heater body will face the excessive danger of carbon monoxide.So this The invention detection method utilizes air blower 7 by extra gas emission to outdoor, and detects the aging shape of air blower 7 Condition.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that There is also other identical elements in process, method, article or equipment including the element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (7)

1. a kind of water heater with detection device, including water heater body (1), it is characterised in that: the water heater body (1) Including combustion box (2), water body pipeline (3), burner (4), detection device (5), exhaust pipe (6), air blower (7), flue Road (10), gas valve (11) and processor (12), the burner (4) and air blower (7) are each provided at the combustion box (2) The entrance of the burner (4), the entrance (8) of the air blower are communicated to described in outlet (9) connection of the interior and described air blower It is communicated to the combustion box (2) outside, the gas pipeline (10) is communicated in the combustion box (2) and the gas pipeline (10) It is equipped with the gas valve (11), is equipped with the detection device (5) in the air blower (7), the entrance of the water body pipeline (3) The two sides of the combustion box (2) are located at outlet and the water body pipeline (3) is located in the combustion box (2), the combustion box (2) it is communicated at the top of the exhaust pipe (6), the detection device (5) includes detector (13), processor (12) and report Alert device (15), the detector (13) are located in the air blower (7), and the output end of the detector (13) is connected to the place The input terminal of device (12) is managed, the output end of the processor (12) is connected to the gas valve (11), alarm (15) and drum Blower (7).
2. a kind of water heater with detection device according to claim 1, it is characterised in that: the water body pipeline (3) Tube body extend in the combustion box (2) and the S-type structure of tube body of the water body pipeline (3), the water body pipeline (3) set In the top of the combustion box (2).
3. a kind of water heater with detection device according to claim 1, it is characterised in that: in the processor (12) It being additionally provided with a delay controller (14), the output end of the delay controller (14) is connected to the input terminal of the air blower (7), The input terminal of the delay controller (14) is connected to the processor (12).
4. a kind of water heater with detection device according to claim 1, it is characterised in that: the detector (13) is Velocity sensor, the output end of the velocity sensor are connected to the input terminal of the processor (12).
5. a kind of a kind of detection method of the water heater with detection device according to claim 1-4, special Sign is: including the following steps:
(1) start air blower (7), and detect the speed of air blower (7) after air blower (7) operation, processor (12) is in air blast Three velocity intervals are set before machine (7) operation, respectively First Speed range, second speed range and third speed range;
(2) operating rate of detector (13) real-time detection air blower (7) and part operating rate numerical value is sent to the processing In device (12), the operating rate of air blower (7) is compared with First Speed range, then when the speed of air blower (7) exists Start to supply gas to burner (4) when within the scope of First Speed, or exceeds First Speed in the operating rate of air blower (7) When range, gas is not supplied and stops air blower (7) in burner (4);
(3) operating rate of air blower (7) is detected again after a certain period of time in burner (4) heating water, and by air blower (7) Operating rate is compared with second speed range, then when the operating rate of air blower (7) is within the scope of second speed, after Continue the operating rate supplied gas to burner (4) and keep air blower (7);When (7) speed of air blower is more than second speed When range, stop supplying gas into burner (4);
(4) air blower (7) operation a period of time is kept after water heater stops supplying gas to burner (4), is then detected The operating rate of the operating rate of air blower (7), air blower (7) is compared with third speed range, then in air blower (7) Predetermined time of the operating rate within the scope of third speed after close air blower (7).
6. a kind of detection method of water heater with detection device according to claim 5, it is characterised in that: in step (3) in, the input terminal of air blower (7) is connected to the delay controller (14), when the air blower (7) continues working one section Between.
7. a kind of detection method of water heater with detection device according to claim 5, it is characterised in that: in step (2) in, when the operating rate of air blower (7) is more than First Speed range, alarm (15) is started to work;In step (3), When the operating rate of air blower (7) is more than second speed range, alarm (15) work;In step (4), work as air blower (7) when operating rate is more than third speed range, alarm (18) is started to work.
CN201811124917.7A 2018-09-26 2018-09-26 A kind of water heater and its detection method with detection device Pending CN109520138A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811124917.7A CN109520138A (en) 2018-09-26 2018-09-26 A kind of water heater and its detection method with detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811124917.7A CN109520138A (en) 2018-09-26 2018-09-26 A kind of water heater and its detection method with detection device

Publications (1)

Publication Number Publication Date
CN109520138A true CN109520138A (en) 2019-03-26

Family

ID=65769829

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811124917.7A Pending CN109520138A (en) 2018-09-26 2018-09-26 A kind of water heater and its detection method with detection device

Country Status (1)

Country Link
CN (1) CN109520138A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109506371A (en) * 2018-09-27 2019-03-22 中山市思源电器有限公司 A kind of ventilation water heater and its method for testing security

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970016395A (en) * 1995-09-27 1997-04-28 배순훈 Reverse wind detection method of gas boiler
CN201983419U (en) * 2011-04-12 2011-09-21 励土峰 Air intake-enhanced gas water heater
CN102192808A (en) * 2010-03-19 2011-09-21 海尔集团公司 Device and method for detecting wind pressure
CN102374641A (en) * 2010-08-09 2012-03-14 关隆股份有限公司 Storm type water heater and safety detection method thereof
CN102767842A (en) * 2012-03-09 2012-11-07 武汉海尔热水器有限公司 Method and device for controlling burning efficiency
CN102954592A (en) * 2011-08-26 2013-03-06 关隆股份有限公司 Method for detecting safety of strong type water heater
CN203010895U (en) * 2012-11-30 2013-06-19 中山市樱雪集团有限公司 Novel quick constant temperature gas water heater
CN106052136A (en) * 2016-05-27 2016-10-26 万家乐热能科技有限公司 Air supplying and exhausting monitoring method for gas heating water heating furnace
CN106642713A (en) * 2015-11-02 2017-05-10 关隆股份有限公司 Method for detecting venting safety of water heater
AU2016238882A1 (en) * 2015-10-26 2017-05-11 Grand Mate Co., Ltd. Method of Ensuring Safety of Exhaust of Water Heater

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970016395A (en) * 1995-09-27 1997-04-28 배순훈 Reverse wind detection method of gas boiler
CN102192808A (en) * 2010-03-19 2011-09-21 海尔集团公司 Device and method for detecting wind pressure
CN102374641A (en) * 2010-08-09 2012-03-14 关隆股份有限公司 Storm type water heater and safety detection method thereof
CN201983419U (en) * 2011-04-12 2011-09-21 励土峰 Air intake-enhanced gas water heater
CN102954592A (en) * 2011-08-26 2013-03-06 关隆股份有限公司 Method for detecting safety of strong type water heater
CN102767842A (en) * 2012-03-09 2012-11-07 武汉海尔热水器有限公司 Method and device for controlling burning efficiency
CN203010895U (en) * 2012-11-30 2013-06-19 中山市樱雪集团有限公司 Novel quick constant temperature gas water heater
AU2016238882A1 (en) * 2015-10-26 2017-05-11 Grand Mate Co., Ltd. Method of Ensuring Safety of Exhaust of Water Heater
CN106642713A (en) * 2015-11-02 2017-05-10 关隆股份有限公司 Method for detecting venting safety of water heater
CN106052136A (en) * 2016-05-27 2016-10-26 万家乐热能科技有限公司 Air supplying and exhausting monitoring method for gas heating water heating furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109506371A (en) * 2018-09-27 2019-03-22 中山市思源电器有限公司 A kind of ventilation water heater and its method for testing security

Similar Documents

Publication Publication Date Title
CN104764136A (en) Ventilation device with oily fume purification, air change and heat exchange functions for kitchen
CN204100585U (en) Condensing heat exchanger and there is its forced exhaust gas water heater
CN106016323A (en) Mesh belt tempering furnace
CN109520138A (en) A kind of water heater and its detection method with detection device
CN104913486B (en) Balance-type gas-fired hot water device
CN205170900U (en) Converter gas burns entirely, full recovery system of waste heat complementary energy
CN207975831U (en) A kind of low emissions combustion structure of gas-heating water heater
CN108072283B (en) A kind of furnace control and control method
CN207162662U (en) Freeze range hood in a kind of kitchen
CN205481100U (en) Energy -saving device of boiler
CN212962764U (en) Environment-friendly natural gas tunnel cave with waste heat utilization function
CN108592161A (en) A kind of fuel gas heating apparatus
CN204806414U (en) Gas purifies stove
CN209886598U (en) Novel rapid heating forging furnace for precision forging
CN209732159U (en) Automatic efficient energy-saving sterilizing device for ganoderma lucidum mushroom bags
CN2773518Y (en) Gas radiant heater in large space
CN204268856U (en) A kind of drying unit making perfume
CN110966762B (en) Control method of supercharged gas water heater and gas water heater
CN208282086U (en) A kind of smokeless emission combustion furnace
CN207413432U (en) A kind of regenerating active carbon purifier
CN207413434U (en) Regenerating active carbon purifier
CN105042848B (en) Intelligent alcohol-based fuel water heater, hot-water heating system and hot water Supply Method
CN204693453U (en) A kind of self-priming air energy soot blower for boiler
CN205332547U (en) Gas hot water system of self -cleaning
CN204593425U (en) The dedusting of flue gas efficient electric and fume afterheat utilize combination unit

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20190326

RJ01 Rejection of invention patent application after publication