CN110822701A - Gas water heater with water leakage alarm system - Google Patents

Gas water heater with water leakage alarm system Download PDF

Info

Publication number
CN110822701A
CN110822701A CN201911151793.6A CN201911151793A CN110822701A CN 110822701 A CN110822701 A CN 110822701A CN 201911151793 A CN201911151793 A CN 201911151793A CN 110822701 A CN110822701 A CN 110822701A
Authority
CN
China
Prior art keywords
water
water leakage
gas
port
controller
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
CN201911151793.6A
Other languages
Chinese (zh)
Inventor
邓海涛
郑培伟
宿元星
徐基巍
鲍云建
王纪刚
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.)
Qingdao Aucma Smart Home Co Ltd
Aucma Co Ltd
Original Assignee
Qingdao Aucma Smart Home Co Ltd
Aucma 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 Qingdao Aucma Smart Home Co Ltd, Aucma Co Ltd filed Critical Qingdao Aucma Smart Home Co Ltd
Priority to CN201911151793.6A priority Critical patent/CN110822701A/en
Publication of CN110822701A publication Critical patent/CN110822701A/en
Pending legal-status Critical Current

Links

Images

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
    • F24H1/00Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/124Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using fluid fuel
    • 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
    • F24H9/0005Details for water heaters
    • 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 gas water heater with a water leakage alarm system, which comprises a shell, a heat exchanger, a burner, a smoke exhaust device, a water leakage alarm device and a controller, wherein the shell is provided with a water inlet and a water outlet; the water leakage alarm device comprises a water leakage protection alarm and a water leakage protection sensor, the water leakage protection sensor is installed at the bottom of the shell and is connected with the water leakage protection alarm through a fifth connecting wire, and the water leakage protection alarm is further connected with the controller. The gas water heater has the beneficial effects that the water leakage alarm device is arranged in the gas water heater, when the water leakage protection sensor at the bottom of the shell detects water leakage drops, the water leakage protection sensor can transmit an electric signal to the water leakage protection alarm, the water leakage protection alarm gives an alarm, the water leakage protection alarm also transmits the electric signal to the controller, and the controller stops the working state of the gas water heater; in addition, the user can be informed of timely maintenance through the mobile phone APP, the use safety is guaranteed, and better experience is brought to the client.

Description

Gas water heater with water leakage alarm system
Technical Field
The invention relates to the technical field of gas water heaters, in particular to a gas water heater with a water leakage alarm system.
Background
The gas water heater is also called as a gas water heater, and refers to a gas appliance which takes gas as fuel and transfers heat to cold water flowing through a heat exchanger in a combustion heating mode so as to achieve the purpose of preparing hot water. At present, the utilization rate of household gas water heaters is gradually increased, safety is a problem which needs to be noticed, and the common gas water heater only comprises an air leakage protection valve, but cannot detect the water leakage problem of the gas water heater in the gas water heater. In the use process of the gas water heater, the pipe and the valve body have service lives, so that the water leakage phenomenon is easy to generate. In winter with cold weather, the internal pipe of the gas water heater has the possibility of being frozen and damaged, and the phenomenon of water leakage can be caused. The water leakage phenomenon of the gas water heater increases the possibility of safety problems of the gas water heater in the using process of appliances, and generates danger for users.
The gas water heater in the current market only has a gas leakage protection switch and does not have a water leakage prevention device. When the gas water heater is used, if the temperature is too low and the pipeline is frozen due to poor pipe materials, the gas water heater leaks water, so that great potential safety hazards are caused to the normal use of the gas water heater, and meanwhile, the service life of internal components of the gas water heater can be shortened due to water leakage. In addition, the pipeline for water flowing inside the gas water heater is complex, and it is difficult to accurately view the specific water leakage position and the water leakage state. The position of the gas water heater is generally mainly kitchen and affected by humidity, so that the accuracy of the detection of the water leakage detection switch is easily reduced.
Disclosure of Invention
The invention discloses a gas water heater with a water leakage alarm system, which aims to solve the technical problem of lack of water leakage alarm in the gas water heater.
In order to achieve the purpose, the invention adopts the following technical scheme:
a gas water heater with a water leakage alarm system comprises a shell, a heat exchanger arranged in the shell, a burner for heating the heat exchanger, a smoke exhaust device, a water leakage alarm device and a controller; the water leakage alarm device comprises a water leakage protection alarm and a water leakage protection sensor, the water leakage protection sensor is installed at the bottom of the shell and is connected with the water leakage protection alarm through a fifth connecting wire, and the water leakage protection alarm is further connected with the controller.
As a further preferable mode of the present invention, the smoke exhaust device includes a smoke collecting hood, a direct current fan, a wind pressure meter, a negative pressure wind pressure pipe and a positive pressure wind pressure pipe, the smoke collecting hood is installed at the top of the heat exchanger, an air inlet of the direct current fan is communicated with the smoke collecting hood, a negative pressure port and a positive pressure port are installed in an air outlet of the direct current fan, the negative pressure port and the positive pressure port are respectively communicated with the wind pressure meter through the negative pressure wind pressure pipe and the positive pressure wind pressure pipe, the wind pressure meter is connected with the controller through a first connection line, and the controller is connected with the direct current fan through a second connection line.
Preferably, the negative pressure port is in a T-shaped tubular shape, straight edges of the flared T-shaped tubular first port and the flared T-shaped tubular second port are parallel to the airflow direction of the air outlet of the direct current fan, and the T-shaped tubular third port is communicated with the negative pressure air pressure pipe.
As a further preferable mode of the present invention, the positive pressure port is in an L-shaped tubular shape, a straight edge of one port of the L-shaped tubular shape is parallel to the air flow direction of the outlet of the direct current fan, and the other port of the L-shaped tubular shape is communicated with the positive pressure air pressure pipe.
As a further preferred aspect of the present invention, the gas combustion burner further comprises a gas proportional valve, the housing is provided with an air inlet port, one end of the gas proportional valve is communicated with the air inlet port, the other end of the gas proportional valve is mounted on the burner, and gas enters the burner from the air inlet port through the gas proportional valve.
As a further preferred aspect of the present invention, the controller is connected to the gas proportional valve through a third connecting line, and is configured to control the on/off of the gas proportional valve.
As a further preferred option of the invention, the water-cooled heat exchanger further comprises a water flow sensor, the shell is further provided with a water inlet interface and a water outlet interface, one end of the water flow sensor is communicated with the water inlet interface, the other end of the water flow sensor is communicated with one end of the heat exchanger through a water pipe, and the other end of the heat exchanger is communicated with the water outlet interface through a water pipe.
As a further preferred embodiment of the present invention, the controller is connected to the water flow rate sensor through a fourth connection line, and transmits the water flow signal to the controller.
As a further preferred aspect of the present invention, the burner further comprises an ignition needle, and the ignition needle is installed inside the burner.
The gas water heater has the beneficial effects that the water leakage alarm device is arranged in the gas water heater, when the water leakage protection sensor at the bottom of the shell detects water leakage drops, the water leakage protection sensor can transmit an electric signal to the water leakage protection alarm, the water leakage protection alarm gives an alarm, the water leakage protection alarm also transmits the electric signal to the controller, and the controller stops the working state of the gas water heater; in addition, the user can be informed of timely maintenance through the mobile phone APP, the use safety is guaranteed, and better experience is brought to the client.
Drawings
FIG. 1 is a schematic structural view of the present invention;
wherein, 1-shell; 2-smoke collecting hood; 3, air outlet; 4-a negative pressure port; 5-a positive pressure port; 6-negative pressure wind pressure pipe; 7-positive pressure pneumatic tube; 8-a wind pressure meter; 9-a first connection line; 10-a direct current fan; 11-a second connecting line; 12-a controller; 13-a third connecting line; 14-water leakage protection alarm; 15-a fourth connecting line; 16-a water flow sensor; 17-a fifth connecting line; 18-a gas proportional valve; 19-water inlet interface; 20-an air inlet interface; 21-water leakage protection sensor; 22-water outlet interface; 23-a burner; 24-an ignition needle; 25-heat exchanger.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a gas water heater with a water leakage alarm system comprises a shell 1, a heat exchanger 25 arranged in the shell 1, a burner 23 for heating the heat exchanger 25, a smoke exhaust device, a water leakage alarm device and a controller 12; the burner 23 and the heat exchanger 25 are communicated and installed at corresponding positions at the bottom end in the shell 1, the burner 23 is used for heating the heat exchanger 25, and the heat exchanger 25 is used for heating cold water into hot water; the water leakage alarm device comprises a water leakage protection alarm 14 and a water leakage protection sensor 21, wherein the water leakage protection sensor 21 is arranged at the bottom of the shell 1 and is connected with the water leakage protection alarm 14 through a fifth connecting wire 17, and the water leakage protection alarm 14 is also connected with the controller 12. The water leakage protection alarm 14 is a water leakage detection device, and when water drops adhere to the surface of the water leakage protection sensor 21, the water drops are transmitted to the water leakage protection alarm 14 through the water leakage protection sensor 21, and the water leakage protection alarm 14 gives an alarm.
Particularly, the smoke exhaust device comprises a smoke collecting hood 2, a direct current fan 10, a pressure disc type wind pressure meter 8, a negative pressure wind pressure pipe 6 and a positive pressure wind pressure pipe 7, the smoke collecting hood 2 is arranged at the top of a heat exchanger 25 and used for collecting smoke generated by a combustor 23, the direct current fan 10 is arranged at the top end inside a shell 1, an air inlet of the direct current fan 10 is communicated with the smoke collecting hood 2 and used for exhausting the smoke collected by the smoke collecting hood 2, a negative pressure port 4 and a positive pressure port 5 are arranged in an air outlet 3 of the direct current fan 10, the negative pressure port 4 and the positive pressure port 5 are respectively communicated with the pressure disc type wind pressure meter 8 through the negative pressure wind pressure pipe 6 and the positive pressure wind pressure pipe 7, the specific negative pressure port 4 and the specific positive pressure port 5 are respectively communicated with the pressure disc type wind pressure meter 8 through the negative pressure wind pressure pipe 6 and, the circuit module is arranged inside the pressure sensor and can convert the pressure difference into a voltage signal; the pressure disc type wind pressure meter 8 is connected with a controller 12 through a first connecting wire 9, and transmits a voltage signal to the controller 12; the controller 12 is connected with the direct current fan 10 through a second connection line 11, and the rotation speed controller 12 of the direct current fan 10 automatically adjusts the rotation speed of the direct current fan 10 according to different voltage signals transmitted by the pressure disc type wind pressure meter 8.
Particularly, the negative pressure port 4 is in a T-shaped tubular shape, straight edges where a first flared T-shaped tubular port and a second flared T-shaped tubular port are located are parallel to the airflow direction of the air outlet 3 of the direct current fan 10, and a third T-shaped tubular port is communicated with the negative pressure air pressure pipe 6; straight edges where the T-shaped tubular first port and the T-shaped tubular second port are located are parallel to the direction of flue gas flow at the air outlet 3 of the direct-current fan 10, and a T-shaped tubular third port is communicated with the negative pressure air pressure pipe 6; the T-shaped tubular first port is flared, so that the inflow of the airflow is more facilitated.
Particularly, the positive pressure port 5 is in an L-shaped tubular shape, a straight edge of one port of the L-shaped tubular shape is parallel to the airflow direction of the air outlet 3 of the direct current fan 10, and the other port of the L-shaped tubular shape is communicated with the positive pressure air pressure pipe 7.
Particularly, the gas combustion device further comprises a gas proportional valve 18, an air inlet port 20 is arranged on the shell 1, one end of the gas proportional valve 18 is communicated with the air inlet port 20, the other end of the gas proportional valve 18 is installed on a combustor 23, and gas enters the combustor 23 from the air inlet port 20 through the gas proportional valve 18.
In particular, the controller 12 is connected to the gas proportional valve 18 through a third connection line 13 for controlling the opening and closing of the gas proportional valve 18.
Particularly, the water flow sensor 16 is further included, the housing 1 is further provided with a water inlet interface 19 and a water outlet interface 22, one end of the water flow sensor 16 is communicated with the water inlet interface 19, the other end of the water flow sensor is communicated with one end of the heat exchanger 25 through a water pipe, and the other end of the heat exchanger 25 is communicated with the water outlet interface 22 through a water pipe.
Specifically, the controller 12 is connected to the water flow sensor 16 via a fourth connection 15, which transmits a water flow signal to the controller 12.
In particular, an ignition needle 24 is also included, the ignition needle 24 being mounted inside the burner 23.
Specifically, when the controller 12 detects that water flows, the controller 12 gives a signal to the direct current fan 10 to rotate the direct current fan 10, the controller 12 controls the ignition needle 24 to discharge electricity while the direct current fan 10 rotates, then the controller 12 controls the gas proportional valve 18 to open, and the ignition needle 24 discharges electricity to ignite gas in the combustor 23 to heat the heat exchanger 25, that is, heat the water flow.
Basic principle of the water heater:
after the water heater is opened, water flows out of the water outlet port 22, water flows in the water inlet port 19, the water flows to the water flow sensor 16, the water flow sensor 16 sends a signal to the controller 12, the controller 12 sends a signal to the direct current fan 10 to enable the fan to rotate, the controller 12 enables the ignition needle 24 to discharge when the fan rotates, then the controller 12 controls the gas proportional valve 18 to be opened, the ignition needle 24 discharges to ignite gas, and the water heater heats the water flows.
In the invention, when the gas water heater works normally, the water leakage protection alarm 14 is in a non-working detection state. When the gas water heater has water leakage and water drops drop on the surface of the water leakage protection sensor 21, the water leakage protection sensor 21 informs the water leakage protection alarm 14 in an electric signal mode through the fifth connecting wire 17, the water leakage protection alarm 14 starts to work and sends out alarm notification, meanwhile, the water leakage protection alarm 14 transmits the electric signal mode to the controller 12, and the controller 12 stops the working state of the gas water heater. Still can connect leak water alarm device in gas heater user's cell-phone APP for often send leak water alarm to cell-phone APP and inform, gas heater has the phenomenon of leaking, needs in time to maintain, guarantees safety.
In the process that the flue gas generated by the burner 23 is discharged to the outside through the smoke collecting hood 2 and the air outlet 3 of the direct current fan 10, the airflow flows in through the first port on the negative pressure port 4 and flows out from the second port and the third port, and simultaneously the airflow flows in from one port of the positive pressure port 5 and flows out from the other port, because the negative pressure port 4 is in a T-shaped tubular shape, the first port is communicated with the second port, the flow velocity of the airflow at the negative pressure port 4 is greater than that at the positive pressure port 5, and because the pressure at the place where the flow velocity is large is small, the pressure at the negative pressure port 4 is smaller than that at the positive pressure port 5, a pressure difference is formed between the negative pressure port 4. More specifically, when the wind resistance of the air outlet 3 increases, the flow velocity of the airflow at the negative pressure port 4 is blocked, so that the pressure difference between the negative pressure port 4 and the positive pressure port 5 decreases, otherwise, the pressure difference increases, and the corresponding controller 12 automatically adjusts the rotation speed of the direct current fan 10.
This gas heater can be according to the big or small automatically regulated fan rotational speed of 3 resistances of air outlet, makes gas heater burning stable, has the beneficial effect of anti-wind pressure. Install pressure disk anemometer 8 in this gas heater simultaneously, act on anemometer 8 through two kinds of different pressures that negative pressure port 4 and malleation port 5 installed in direct current fan 10 air outlet 3 detected and form the pressure differential, have circuit module in the anemometer 8, can convert different pressure differentials into different voltage signal and send controller 12 to, controller 12 is according to voltage signal automatic control direct current fan 10 rotational speed. The rotating speed of the direct current fan 10 is only related to the pressure difference and is not influenced by the working environment of the gas water heater. The defects that the rotating speed of the fan used by the common direct current fan 10 gas water heater in a high-altitude area is fast increased and flameout protection is easy to realize are overcome.
The invention can prevent the water leakage phenomenon caused by unstable factors such as pipes, temperature, valve bodies and the like in the use process of the gas water heater, can immediately stop working, and ensures the safety. Meanwhile, the user can receive the water leakage problem through the mobile phone APP in the first time, the maintenance is carried out in time, and the safety of family members can be guaranteed in time even if the user goes out for work.
The specific installation positions of all the components in the gas water heater, and the line and pipeline arrangement among the components can be adaptively changed according to the specific model of the gas water heater, and the gas water heater is installed, constructed and used as a common gas water heater.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.

Claims (9)

1. A gas water heater with a water leakage alarm system is characterized by comprising a shell, a heat exchanger arranged in the shell, a burner for heating the heat exchanger, a smoke exhaust device, a water leakage alarm device and a controller; the water leakage alarm device comprises a water leakage protection alarm and a water leakage protection sensor, the water leakage protection sensor is installed at the bottom of the shell and is connected with the water leakage protection alarm through a fifth connecting wire, and the water leakage protection alarm is further connected with the controller.
2. The gas water heater with the water leakage alarm system according to claim 1, wherein the smoke exhaust device comprises a smoke collecting hood, a direct current fan, a wind pressure meter, a negative pressure wind pressure pipe and a positive pressure wind pressure pipe, the smoke collecting hood is installed at the top of the heat exchanger, an air inlet of the direct current fan is communicated with the smoke collecting hood, a negative pressure port and a positive pressure port are installed in an air outlet of the direct current fan, the negative pressure port and the positive pressure port are respectively communicated with the wind pressure meter through the negative pressure wind pressure pipe and the positive pressure wind pressure pipe, the wind pressure meter is connected with the controller through a first connecting wire, and the controller is connected with the direct current fan through a second connecting wire.
3. The gas water heater with the water leakage alarm system according to claim 2, wherein the negative pressure port is in a T-shaped tubular shape, straight edges of the first flared T-shaped port and the second flared T-shaped port are parallel to the airflow direction of the outlet of the direct current fan, and a third T-shaped port is communicated with the negative pressure air pressure pipe.
4. The gas water heater with the water leakage alarm system according to claim 2, wherein the positive pressure port is in an L-shaped tubular shape, a straight edge of one port of the L-shaped tubular shape is parallel to the air flow direction of the air outlet of the direct current fan, and the other port of the L-shaped tubular shape is communicated with the positive pressure air pressure pipe.
5. The gas water heater with the water leakage alarm system of claim 1, further comprising a gas proportional valve, wherein the housing is provided with an air inlet port, one end of the gas proportional valve is communicated with the air inlet port, the other end of the gas proportional valve is mounted on the burner, and gas enters the burner through the gas proportional valve from the air inlet port.
6. The gas water heater with the water leakage alarm system as claimed in claim 5, wherein the controller is connected with the gas proportional valve through a third connecting line.
7. The gas water heater with the water leakage alarm system of claim 1, further comprising a water flow sensor, wherein the housing further comprises a water inlet port and a water outlet port, one end of the water flow sensor is communicated with the water inlet port, the other end of the water flow sensor is communicated with one end of the heat exchanger through a water pipe, and the other end of the heat exchanger is communicated with the water outlet port through a water pipe.
8. The gas water heater with the water leakage alarm system of claim 7, wherein the controller is connected with the water flow sensor through a fourth connecting line.
9. A gas water heater with water leak alarm system as defined in claim 1, further comprising an ignition needle, said ignition needle being mounted inside the burner.
CN201911151793.6A 2019-11-21 2019-11-21 Gas water heater with water leakage alarm system Pending CN110822701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911151793.6A CN110822701A (en) 2019-11-21 2019-11-21 Gas water heater with water leakage alarm system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911151793.6A CN110822701A (en) 2019-11-21 2019-11-21 Gas water heater with water leakage alarm system

Publications (1)

Publication Number Publication Date
CN110822701A true CN110822701A (en) 2020-02-21

Family

ID=69557899

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911151793.6A Pending CN110822701A (en) 2019-11-21 2019-11-21 Gas water heater with water leakage alarm system

Country Status (1)

Country Link
CN (1) CN110822701A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111692610A (en) * 2020-06-17 2020-09-22 珠海格力电器股份有限公司 Fan control method, heat exchange structure and gas water heater
WO2023081018A1 (en) * 2021-11-08 2023-05-11 Rheem Manufacturing Company Leak detection in tankless water heater

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111692610A (en) * 2020-06-17 2020-09-22 珠海格力电器股份有限公司 Fan control method, heat exchange structure and gas water heater
WO2023081018A1 (en) * 2021-11-08 2023-05-11 Rheem Manufacturing Company Leak detection in tankless water heater

Similar Documents

Publication Publication Date Title
CN205066133U (en) Wall -mounted gas heating stove
CN110822701A (en) Gas water heater with water leakage alarm system
CN105202745A (en) Gas-fired heating wall-mounted stove and operation control method thereof
CN207230950U (en) The gas heater of adaptive height above sea level
CN103727676A (en) Gas water heater
CN110186193A (en) Control method of self-adaptive air pressure and gas water heater
CN211345813U (en) Gas water heater with water leakage alarm system
CN208253933U (en) Gas heater of self-adaptation wind pressure
CN210718121U (en) Novel gas water heater with wind pressure meter
CN110454988A (en) A kind of gas heater with blast gauge
CN208567017U (en) Air-conditioning system intelligence leakproof water supplement structure
CN203731701U (en) Gas water heater
CN109990486A (en) The antifreeze method and anti-freezing gas water heater of gas heater
CN110873462B (en) Carbon deposition reminding control method for gas water heater with carbon deposition reminding function
CN201412896Y (en) Embedded compositive oil smoke suction cooker
CN112629035A (en) Automatic-cleaning full-premix gas heating water heater and control method thereof
CN207527636U (en) The linkage safety-protection system of gas kitchen ranges and smoke machine
CN108036365B (en) Anti-backfire kitchen range
CN206863930U (en) A kind of domestic gas control system
CN219955689U (en) Self-adaptive oxygen-increasing combustion gas water heater
CN215523778U (en) Anti-freezing device for water heater
CN215523737U (en) Electric wall-mounted stove with safety prompt function
CN111043768A (en) Gas heating water heater control method and device and gas heating water heater
CN204345906U (en) Energy-saving hot water boiler
CN205503487U (en) Water pump controller

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