CN113310086A - Smoke and stove coordinated control device, kitchen range and range hood - Google Patents
Smoke and stove coordinated control device, kitchen range and range hood Download PDFInfo
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- CN113310086A CN113310086A CN202110596784.9A CN202110596784A CN113310086A CN 113310086 A CN113310086 A CN 113310086A CN 202110596784 A CN202110596784 A CN 202110596784A CN 113310086 A CN113310086 A CN 113310086A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2042—Devices for removing cooking fumes structurally associated with a cooking range e.g. downdraft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/12—Arrangement or mounting of control or safety devices
- F24C3/126—Arrangement or mounting of control or safety devices on ranges
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention relates to a smoke stove linkage control device, a stove and a range hood, which are used for the stove and the range hood capable of linkage control, wherein the stove is provided with a gas inlet, and the gas inlet is connected with a gas inlet pipe, and the smoke stove linkage control device is characterized in that: including being used for detecting the first pressure sensor of gas breather pipe lateral wall pressure, reach the judgement subassembly of being connected with first pressure sensor electricity, judge that the subassembly can judge according to the pressure value that first pressure sensor gathered that the cooking utensils are in the open mode or closed state. Compared with the prior art, the invention does not need to change the connection state of the gas pipe and the kitchen range, does not damage and additionally increase joints, can be matched with any brand of kitchen ranges to judge the on-off state or even the firepower of the kitchen range, further adjusts the state of the smoke machine, and has quick response and high reliability.
Description
Technical Field
The invention relates to a smoke stove linkage control device, and a stove and a range hood adopting the smoke stove linkage control device.
Background
The range hood is an electrical appliance which is necessary for people to cook and absorb oil smoke in daily life, and a combo product with a smoke stove linkage function is more and more popular in recent years. On one hand, the linked set meal products are often products of specific models of part manufacturers, even if a user selects the range hood and the kitchen range of the same manufacturer, the collocation of the range hood and the kitchen range is still limited, and in any case, the user also needs to select the range hoods and the kitchen ranges of two different manufacturers. On the other hand, the partial products utilize the infrared temperature measuring elements installed on the range hood to perform non-contact temperature measurement on the pan, the furnace end and the like above the kitchen range, and the opening and closing state of the kitchen range is judged according to the temperature change, so that the range hood is controlled to open and close or adjust the gear of the fan, but the ubiquitous problems of the existing infrared temperature measurement are as follows: the infrared temperature measuring element measures the average temperature in a large area of the table top of the kitchen range, the influence of the instantaneous local temperature rise of the kitchen range on the average temperature in the area range is small, the measured temperature after the cooker cover is covered is easy to average in the low-temperature area around, the situation of mistaken shutdown judgment exists in a large quantity, and even the situation of shutdown of the range hood in midway during cooking can be possibly caused, so that the actual operation of a user is inconvenient. In addition, the temperature measurement mode is to adjust the state of the range hood by calculating the opening and closing of the range after the regional temperature changes, and the judgment of the essential information is lagged compared with the real on-off of the range.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a smoke stove linkage control device which does not need to change the structure of the existing stove, can be suitable for all types of stoves, and has quick response and high reliability.
The second technical problem to be solved by the present invention is to provide a cooking stove using the smoke stove linkage control device in view of the above prior art.
The third technical problem to be solved by the present invention is to provide a range hood using the smoke range linkage control device in view of the above prior art.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a smoke and range coordinated control device for ability coordinated control's cooking utensils and range hood, wherein the cooking utensils are equipped with the gas air inlet, and the gas air inlet is connected with gas intake pipe, its characterized in that: including being used for detecting the first pressure sensor of gas breather pipe lateral wall pressure, reach the judgement subassembly of being connected with first pressure sensor electricity, judge that the subassembly can judge according to the pressure value that first pressure sensor gathered that the cooking utensils are in the open mode or closed state.
As an improvement, in order to improve the detection sensitivity, the smoke stove linkage control device provided by the invention further comprises a detection control box, a bent groove is formed in the detection control box, a part of the gas inlet pipe is wound in the bent groove, and the first pressure sensor is arranged on the inner side wall of the groove and is in contact with the outer side wall of the bent gas inlet pipe. The structure can be applied to the gas inlet pipe made of metal corrugated pipes or other hard pipelines. Because, if the gas inlet pipe is not bent, on one hand, the pressure signal detected by the first pressure sensor is easy to be interfered by the user when the user takes and puts articles, in addition, if the gas inlet pipe is a metal corrugated pipe, the outer side wall pressure signal detected and collected by the first pressure sensor is easy to be inaccurate, the pressure change situation can be amplified after the gas inlet pipe is bent, more reliable measurement and judgment of the actual firing condition of the stove, when the valve body of the stove is closed, the gas supply pressure of the gas pipeline (such as the gas supply pressure of the household end 2000-3000Pa from the common household meter) can make the first pressure sensor bear larger pipeline pressure, after the valve body is opened, the pressure of the pipeline is slightly reduced, and the outer side surface of the bent gas inlet pipe has obvious pressure change due to pressure change, so the invention can be matched with cookers of any brands to judge the startup and shutdown of the cookers and even the firepower.
Preferably, the bent groove is U-shaped.
For some gas inlet pipes made of rubber pipes or silicone pipes or other flexible materials, the detection control box with the bending groove can be adopted, the bending groove is not needed, and the pressure value of the outer side wall when the pipeline pressure changes can be sensitively acquired; at this moment, including detecting the control box equally, be equipped with the recess that is the linear type setting in detecting the control box, the part of gas intake pipe is inlayed in the recess and is established, first pressure sensor sets up at the recess inside wall and with the contact of gas intake pipe lateral wall.
The method for judging whether the assembly judges the cooker to be in the opening state or the closing state comprises the following steps:
if the pressure value acquired by the first pressure sensor is greater than a first preset pressure value, the judgment component judges that the cooker is in a closed state;
if the pressure value collected by the first pressure sensor is smaller than or equal to a first preset pressure value, the judgment component judges that the cooker is in an open state.
If the pressure value collected by the first pressure sensor is less than or equal to a first preset pressure value, the judgment component continues to make the following judgment:
if the pressure value acquired by the first pressure sensor is smaller than a third preset pressure value, the judgment component judges and judges that the cooker is in a big fire state during opening; if the pressure value acquired by the first pressure sensor is greater than or equal to a third preset pressure value and less than or equal to a second preset pressure value, the judgment component judges and judges that the cooker is in a middle fire state during opening; if the pressure value acquired by the first pressure sensor is greater than a second preset pressure value, the judgment component judges and judges that the cooker is in a low-firepower state during opening; the third preset pressure value is smaller than the second preset pressure value and smaller than the first preset pressure value.
In order to further improve the detection sensitivity and precision, the smoke stove linkage control device also comprises a second pressure sensor for detecting the pressure of the outer side wall of the gas vent pipe, the second pressure sensor and the first pressure sensor are arranged at intervals, the second pressure sensor is also electrically connected with the judgment component, and the judgment component can judge whether the stove is in an opening state or a closing state according to the pressure values collected by the first pressure sensor and the second pressure sensor.
Similarly, under the condition that there are two pressure sensor, the structure that detects the control box also can be including the recess or the linear type recess that buckle the setting, and first pressure sensor and second pressure sensor set up respectively in the different positions of recess inside wall and all buckle the gas intake pipe lateral wall contact that sets up.
The method for judging whether the assembly judges the cooker to be in the opening state or the closing state comprises the following steps:
at the collection time of two intervals, respectively collecting two pressure values P1a and P1b of the first pressure sensor and two pressure values P2a and P2b of the second pressure sensor;
calculating two pressure change values delta P1 acquired by the first pressure sensor, namely P1b-P1 a; calculating two pressure change values delta P2 acquired by the second pressure sensor, namely P2b-P2 a;
judging whether the delta P1X delta P2 is more than 0, if not, outputting a gas leakage prompt; if so, judging whether both P1b and P2b are larger than a first preset pressure value, if so, judging that the cooking utensil is in a closed state by the judgment component; if not, assigning the value with lower pressure in P1b and P2b to Ps; then, the Ps is compared with a second preset pressure value and a third preset pressure value, and if the Ps is smaller than the third preset pressure value Pc, the judgment component judges and judges that the stove is in a large-fire state during opening; if Ps is larger than or equal to a third preset pressure value Pc and smaller than or equal to a second preset pressure value Pb, the judging component judges and judges that the stove is in a middle-fire state during opening, and if Ps is larger than the second preset pressure value Pb, the judging component judges and judges that the stove is in a low-fire state during opening; the third preset pressure value Pc is smaller than the second preset pressure value Pb and smaller than the first preset pressure value Pa.
The smoke stove linkage control device further comprises a communication module electrically connected with the judging component, and the communication module is in communication connection with a control circuit board in the range hood; the state signal of judging the opening or closing of the cooker by the judging component is sent to a control circuit board in the range hood through a communication module
The technical scheme adopted by the invention for solving the second technical problem is as follows: the utility model provides a can with range hood coordinated control's cooking utensils, includes the gas air inlet, the gas intake pipe of being connected with the gas air inlet, its characterized in that: the stove is also provided with a smoke stove linkage control device according to claim 11.
The technical scheme adopted by the invention for solving the third technical problem is as follows: the utility model provides a can with cooking utensils coordinated control's range hood, includes the fan and can control the fan and open and close or the control circuit board of gear, its characterized in that: still including the cigarette kitchen coordinated control device that has above-mentioned structure, cigarette kitchen coordinated control device sets up on rather than coordinated control's cooking utensils, and cigarette kitchen coordinated control device's communication module and control circuit board communication connection, and control circuit board opens or closes the signal according to the cooking utensils that cigarette kitchen coordinated control device sent, starts or closes the fan.
Compared with the prior art, the invention has the advantages that: the gas pipe is utilized to generally adopt pressurization gas supply, and the gas inlet pipeline is subjected to pressure change when the gas is switched on and off, so that obvious pressure change on the outer side surface is caused to judge the on-off state of the cooker, the gas pipe can be matched with cookers of any brands, and the gas pipe completely feeds back in advance relative to the temperature lag quantity such as infrared rays, and the reaction is fast and the reliability is high.
Drawings
Fig. 1 is a schematic structural diagram of a smoke range linkage control device according to an embodiment of the present invention.
Fig. 2 is a flowchart of a method for determining a smoke range linkage control device according to an embodiment of the present invention.
FIG. 3 is a graph showing the change of wall pressure of the gas inlet pipe with time in the embodiment of the present invention.
Fig. 4 is a schematic structural view of a smoke range linkage control device according to a second embodiment of the present invention.
Fig. 5 is a flowchart of a determining method of the smoke range linkage control device according to the second embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Example one
As shown in fig. 1, the smoke and oven coordinated control device, can be used to ability coordinated control's cooking utensils and range hood, wherein the cooking utensils are equipped with the gas air inlet, the gas air inlet is connected with gas intake pipe 1, this smoke and oven coordinated control device is including being used for detecting the first pressure sensor 2 of 1 lateral wall pressure of gas breather pipe, and the judgement subassembly 3 of being connected with first pressure sensor electricity, judge that subassembly 3 can judge according to the pressure value that first pressure sensor gathered that the cooking utensils are in the open mode or closed mode, it is connected with communication module 4 electricity to judge subassembly 3, this communication module 4 and the inside control circuit board communication connection of range hood.
In this embodiment, a holistic detection module can be made to cigarette kitchen coordinated control device, and it is including detecting control box 5, is equipped with the recess 51 that buckles the setting in detecting control box 5, and the nature of recess 51 can be semi-circular, and the spiral, central angle are the arc of 30 ~ 120 degrees, and this embodiment is the U type, will the winding setting in the recess 51 that buckles the setting of the part of gas intake pipe 1, and first pressure sensor 2 is setting up at recess 51 inside wall and with the contact of the gas intake pipe lateral wall that buckles the setting. Detect control box 5 and can wholly set up in cooking utensils chassis below, the gas intake pipe 1 of being connected with cooking utensils gas air inlet is in advance before the access in the recess 51 wire winding segment of detection control box, when the cooking utensils valve body is closed, the gas supply pressure of gas pipeline is great, make sensing module's sensor receive great pipeline pressure, and after the valve body is opened, pipeline pressure slightly reduces, pressure variation leads to the return bend to have obvious pressure change to the outside face, it is shown in the participation figure 3, so this cigarette kitchen coordinated control device can arrange with arbitrary brand cooking utensils, judge cooking utensils on-off state.
The judging component 4 judges whether the cooker is in an open state or a closed state by the following method, please refer to fig. 2:
if the pressure value P1 acquired by the first pressure sensor is greater than a first preset pressure value Pa, the judgment component judges that the cooker is in a closed state;
if the pressure value P1 acquired by the first pressure sensor is less than or equal to a first preset pressure value Pa, the judgment component judges that the cooker is in an open state; if the pressure value collected by the first pressure sensor is less than or equal to a first preset pressure value, the judgment component continues to make the following judgment:
if the pressure value P1 acquired by the first pressure sensor is smaller than the third preset pressure value Pc, the judgment component judges and judges that the cooker is in a big fire state during opening; if the pressure value P1 acquired by the first pressure sensor is greater than or equal to the third preset pressure value Pc and less than or equal to the second preset pressure value Pb, the judgment component judges and judges that the cooker is in a middle fire state during opening; if the pressure value P1 acquired by the first pressure sensor is greater than the second preset pressure value Pb, the judgment component judges and judges that the cooker is in a low-firepower state during opening; the third preset pressure value is smaller than the second preset pressure value and smaller than the first preset pressure value. Considering that the gas supply pressure of common household pipeline gas is 2000Pa, basically all the gas companies are fully automatically monitored and adjusted, and the values of less deviation Pa, Pb and Pc can be selected as follows: pa ∈ [1850Pa, 1950Pa ]; pb ∈ [1600Pa, 1800Pa ]; pc ∈ [1200Pa, 1500Pa ].
Example two
Different from the first embodiment, the inner side wall of the groove 51 is further provided with a second pressure sensor 6, the first pressure sensor 2 is arranged on one side inner wall of the U-shaped groove 51, and the second pressure sensor 6 is arranged on the other opposite side inner wall of the U-shaped groove 51. The second pressure sensor 6 is also electrically connected with the judgment component 3, and the judgment component 3 can judge whether the cooker is in an opening state or a closing state according to pressure values collected by the first pressure sensor 2 and the second pressure sensor 6. See fig. 4.
Fig. 5 shows a method for determining whether the cooking appliance is in an open state or a closed state by the determining component, which specifically includes:
at the collection time of two intervals, respectively collecting two pressure values P1a and P1b of the first pressure sensor and two pressure values P2a and P2b of the second pressure sensor;
calculating two pressure change values delta P1 acquired by the first pressure sensor, namely P1b-P1 a; calculating two pressure change values delta P2 acquired by the second pressure sensor, namely P2b-P2 a;
judging whether the delta P1X delta P2 is more than 0, if not, outputting a gas leakage prompt; if so, judging whether both P1b and P2b are greater than a first preset pressure value Pa, and if so, judging that the cooking utensil is in a closed state by the judgment component; if not, assigning the value with lower pressure in P1b and P2b to Ps; then, the Ps is compared with a second preset pressure value and a third preset pressure value, and if the Ps is smaller than the third preset pressure value Pc, the judgment component judges and judges that the stove is in a large-fire state during opening; if Ps is larger than or equal to a third preset pressure value Pc and smaller than or equal to a second preset pressure value Pb, the judging component judges and judges that the stove is in a middle-fire state during opening, and if Ps is larger than the second preset pressure value Pb, the judging component judges and judges that the stove is in a low-fire state during opening; the third preset pressure value Pc is smaller than the second preset pressure value Pb and smaller than the first preset pressure value Pa. Pa ∈ [1850Pa, 1950Pa ]; pb ∈ [1600Pa, 1800Pa ]; pc ∈ [1200Pa, 1500Pa ].
In addition, the invention also provides a kitchen range capable of being controlled by linkage with the range hood, which comprises a gas inlet and a gas inlet pipe connected with the gas inlet, and is characterized in that: the stove is also provided with a smoke stove linkage control device according to claim 11.
In addition, the invention also provides a range hood capable of being in linkage control with a kitchen range, wherein the kitchen range matched with the range hood is also provided with a smoke and kitchen range linkage control device in any one embodiment, the range hood comprises a fan and a control circuit board capable of controlling the opening and closing or the gear of the fan, a communication module of the smoke and kitchen range linkage control device on the kitchen range matched with the range hood is in communication connection with the control circuit board, the control circuit board starts or closes the fan according to a kitchen range opening or closing signal sent by the smoke and kitchen range linkage control device, the fan is started when the kitchen range opening signal is received, and the fan is closed or closed in a delayed manner when the kitchen range closing signal is received; when the stove is started by receiving high fire, the rotating speed gear of the fan is set as a high rotating speed gear, when the stove is started by receiving medium fire, the rotating speed gear of the fan is set as a medium rotating speed gear, and when the stove is started by receiving low fire, the rotating speed gear of the fan is set as a low rotating speed gear.
Claims (13)
1. The utility model provides a smoke and range coordinated control device for ability coordinated control's cooking utensils and range hood, wherein the cooking utensils are equipped with the gas air inlet, and the gas air inlet is connected with gas intake pipe, its characterized in that: including being used for detecting the first pressure sensor of gas breather pipe lateral wall pressure, reach the judgement subassembly of being connected with first pressure sensor electricity, judge that the subassembly can judge according to the pressure value that first pressure sensor gathered that the cooking utensils are in the open mode or closed state.
2. The smoke range linkage control device according to claim 1, wherein: still including detecting the control box, be equipped with the recess that buckles and set up in the detection control box, will the part of gas intake pipe is in the recess of buckling the setting wire winding setting, first pressure sensor sets up at the recess inside wall and with the contact of the gas intake pipe lateral wall of buckling the setting.
3. The smoke range linkage control device according to claim 2, wherein: the groove that the bending set up is the U type.
4. The smoke range linkage control device according to claim 1, wherein: still including detecting the control box, be equipped with the recess that is the linear type setting in the detection control box, the part of gas intake pipe is inlayed in the recess and is established, first pressure sensor sets up at the recess inside wall and with the contact of gas intake pipe lateral wall.
5. The smoke range linkage control device according to claim 1 or 2 or 3 or 4, wherein: the method for judging whether the assembly judges the cooker to be in the opening state or the closing state comprises the following steps:
if the pressure value acquired by the first pressure sensor is greater than a first preset pressure value, the judgment component judges that the cooker is in a closed state;
if the pressure value collected by the first pressure sensor is smaller than or equal to a first preset pressure value, the judgment component judges that the cooker is in an open state.
6. The smoke range linkage control device according to claim 5, wherein: if the pressure value collected by the first pressure sensor is less than or equal to a first preset pressure value, the judgment component continues to make the following judgment:
if the pressure value acquired by the first pressure sensor is smaller than a third preset pressure value, the judgment component judges and judges that the cooker is in a big fire state during opening; if the pressure value acquired by the first pressure sensor is greater than or equal to a third preset pressure value and less than or equal to a second preset pressure value, the judgment component judges and judges that the cooker is in a middle fire state during opening; if the pressure value acquired by the first pressure sensor is greater than a second preset pressure value, the judgment component judges and judges that the cooker is in a low-firepower state during opening; the third preset pressure value is smaller than the second preset pressure value and smaller than the first preset pressure value.
7. The smoke range linkage control device according to claim 1, wherein: still including the second pressure sensor that is used for detecting gas breather pipe lateral wall pressure, second pressure sensor and first pressure sensor interval set up, and second pressure sensor also with judge the subassembly electricity and be connected, judge that the subassembly can judge according to the pressure value that first pressure sensor and second pressure sensor gathered that the cooking utensils are in the open mode or the closed condition.
8. The smoke range linkage control device according to claim 7, wherein: still including detecting the control box, be equipped with the recess that buckles and set up in the detection control box, will the part of gas intake pipe is in the recess of buckling the setting wire winding setting, first pressure sensor and second pressure sensor set up respectively in the different positions of recess inside wall and all buckle the gas intake pipe lateral wall contact that sets up.
9. The smoke range linkage control device according to claim 8, wherein: the groove that the bending set up is the U type, first pressure sensor sets up the inner wall in one side of U type groove, second pressure sensor sets up the inner wall in another opposite side of U type groove.
10. The smoke range linkage control device according to claim 7, 8 or 9, wherein: the method for judging whether the assembly judges the cooker to be in the opening state or the closing state comprises the following steps:
at the collection time of two intervals, respectively collecting two pressure values P1a and P1b of the first pressure sensor and two pressure values P2a and P2b of the second pressure sensor;
calculating two pressure change values delta P1 acquired by the first pressure sensor, namely P1b-P1 a; calculating two pressure change values delta P2 acquired by the second pressure sensor, namely P2b-P2 a;
judging whether the delta P1X delta P2 is more than 0, if not, outputting a gas leakage prompt; if so, judging whether both P1b and P2b are larger than a first preset pressure value, if so, judging that the cooking utensil is in a closed state by the judgment component; if not, assigning the value with lower pressure in P1b and P2b to Ps; then, the Ps is compared with a second preset pressure value and a third preset pressure value, and if the Ps is smaller than the third preset pressure value Pc, the judgment component judges and judges that the stove is in a large-fire state during opening; if Ps is larger than or equal to a third preset pressure value Pc and smaller than or equal to a second preset pressure value Pb, the judging component judges and judges that the stove is in a middle-fire state during opening, and if Ps is larger than the second preset pressure value Pb, the judging component judges and judges that the stove is in a low-fire state during opening; the third preset pressure value Pc is smaller than the second preset pressure value Pb and smaller than the first preset pressure value Pa.
11. The smoke range linkage control device according to claim 1, 2, 3, 4, 7, 8 or 9, wherein: the communication module is electrically connected with the judging component and is in communication connection with a control circuit board in the range hood; the judging component sends a state signal for judging whether the kitchen range is opened or closed to a control circuit board in the range hood through the communication module.
12. The utility model provides a can with range hood coordinated control's cooking utensils, includes the gas air inlet, the gas intake pipe of being connected with the gas air inlet, its characterized in that: the stove is also provided with a smoke stove linkage control device according to claim 11.
13. The utility model provides a can with cooking utensils coordinated control's range hood, includes the fan and can control the fan and open and close or the control circuit board of gear, its characterized in that: the kitchen range linkage control device further comprises a kitchen range linkage control device according to claim 11, the kitchen range linkage control device is arranged on a kitchen range which is in linkage control with the kitchen range linkage control device, a communication module of the kitchen range linkage control device is in communication connection with a control circuit board, and the control circuit board starts or closes a fan according to a kitchen range opening or closing signal sent by the kitchen range linkage control device.
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| CN210198627U (en) * | 2019-04-20 | 2020-03-27 | 四维检测(苏州)有限公司 | Pressure sensor for air pressure monitoring |
| CN210123165U (en) * | 2019-05-28 | 2020-03-03 | 杭州老板电器股份有限公司 | Gas stove with pressure feedback system |
| CN211649850U (en) * | 2020-02-26 | 2020-10-09 | 李卓 | Pipeline leakage alarm detection device |
| CN213180453U (en) * | 2020-04-21 | 2021-05-11 | 杨富强 | Pressure detection device for hose |
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