CN105919415A - Method and device for detecting temperature protection point and pressure cooking pot - Google Patents
Method and device for detecting temperature protection point and pressure cooking pot Download PDFInfo
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- CN105919415A CN105919415A CN201610514752.9A CN201610514752A CN105919415A CN 105919415 A CN105919415 A CN 105919415A CN 201610514752 A CN201610514752 A CN 201610514752A CN 105919415 A CN105919415 A CN 105919415A
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- temperature
- value
- protection point
- pressure
- draught head
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/0802—Control mechanisms for pressure-cookers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/09—Safety devices
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Cookers (AREA)
Abstract
The invention provides a method and a device for detecting a temperature protection point and a pressure cooking pot. The detection method comprises the following steps of detecting the initial position change of a float in the pressure cooking device under the action of inner pressure; when the initial position change is detected, determining the state of the float at zero inner pressure; detecting the temperature value at zero inner pressure, and recording the temperature value as a first temperature value; determining the air pressure difference between the preset inner pressure value and the inner pressure value at zero inner pressure, and recording the air pressure difference as a first air pressure difference; according to the mapping relationship between the preset air pressure difference and the temperature difference, determining the first temperature difference value corresponding to the first air pressure difference; according to the sum of first temperature value and first temperature difference value, determining the temperature protection point. By adopting the technical scheme, the detection method has the advantages that the temperature protection point under different pressures is determined, and the electric safety of pressure cooking pot is effectively improved.
Description
Technical field
The present invention relates to living electric apparatus technical field, more specifically, relate to the inspection of a kind of temperature protection point
Survey method, the detection device of a kind of temperature protection point and a kind of pressure cooking pan.
Background technology
Pressure cooking pan generally uses high pressure cooking principle, provides the user the food good to eat to soft silk floss,
But, pressure cooking pan is probably due to pot inner pressure is excessive and the danger such as blast occur, and this has a strong impact on
The personal safety of user and experience.
In correlation technique, generally use the mode of machinery pressure release and software pressure release to carry out, be respectively present following
Technological deficiency:
(1) machinery pressure release generally uses weight to deduct on steam vent, but, eat in steam vent is by pot
During thing blocking, still Keep Clear-High Voltage in generation；
(2) software pressure release mode determines temperature protection point T0 by temperature sensor, but, equally
Temperature conditions under, the intrinsic pressure of the pressure cooking pan of high altitude localities is cooked more than the pressure of low altitude area
Prepare food the intrinsic pressure of pan, this accuracy that cannot guarantee temperature protection point equally and the safety of pressure cooking pan
Property.
Therefore, how to design detection device and the pressure cooking pan of a kind of new temperature protection point, with
The safety of the accuracy and pressure cooking pan that improve temperature protection point becomes problem demanding prompt solution.
Summary of the invention
It is contemplated that at least solve one of technical problem present in prior art or correlation technique.
To this end, it is an object of the present invention to propose the detection method of a kind of temperature protection point.
Further object is that the detection device proposing a kind of temperature protection point.
Another object of the present invention is to propose a kind of pressure cooking pan.
In order to solve at least one above-mentioned technical problem, the embodiment of a first aspect of the present invention, it is proposed that
A kind of detection method of temperature protection point, including: the float in detection pressure cooking appliance is at intrinsic pressure work
First change in location under with；When first change in location being detected, determine that float is zero intrinsic pressure shape
State；Detect zero intrinsic pressure time temperature value, be denoted as the first temperature value；Determine that default intrinsic pressure value is intrinsic pressure with zero
Time intrinsic pressure value between draught head, be denoted as the first draught head；According to default draught head and temperature difference
The mapping relations of value, determine the first temperature gap that the first draught head is corresponding；According to the first temperature value and
First temperature gap and determine temperature protection point.
In above-described embodiment, the float in pressure cooking pan can be mechanical type float, or floats for magnetic
Son, wherein, mechanical type float triggers the mechanical switch in float passage, mechanical switch under intrinsic pressure effect
Produce the corresponding signal that triggers to determine the first change in location of float, magnetic float and magnetic force induction module
Between distance change under intrinsic pressure effect, and then determine the initial position of float according to distance change
Change.
Due to the linear corresponding relation of pressure difference and temperature difference, (ideally linear coefficient K is about
5), as preset intrinsic pressure value P1 be 100Kpa, P0 be first change in location to be detected time intrinsic pressure value, T0
Characterize preset temperature protection point, then the first temperature gap Δ T1 may determine that into:
(P1-P0)/K=Δ T1.
To sum up, finally determine the temperature protection point T=T1+ Δ T1 of pressure cooking pan, T value is replaced soft
The T0 that part is preset, improves the use safety of pressure cooking pan.
Preferably, also including: in the preset time period after determining temperature protection point, in detection, temperature becomes
Whether change value is less than or equal to preset temperature changing value；Detecting that interior temperature changing value is less than or equal to pre-
If during temperature change value, the average temperature value in record preset time period is the second temperature value；Determine inspection
The draught head between intrinsic pressure value and default intrinsic pressure value when measuring the second temperature value, is denoted as the second air pressure
Difference；According to the mapping relations of default draught head Yu temperature gap, determine that the second draught head is corresponding
Two temperature gaps；According to the second temperature value and the second temperature gap and update temperature protection point.
In above-described embodiment, by detect further interior temperature steady time, the second temperature value T2 and second
Temperature gap Δ T2, has more accurately determined temperature protection point, i.e. T=T2+ Δ T2.
Wherein, exhaust apparatus generally uses steam vent and pressure limiting valve, and the gravity of pressure limiting valve is put down with pot inner pressure
During weighing apparatus, now P=mg/S sets up, and wherein P characterizes the aerofluxus value of pressure limiting valve, and S characterizes the face of steam vent
Long-pending, m characterizes the quality of pressure limiting valve, and g characterizes gravity and accelerates (relevant to atmospheric pressure).Kettle temperature reaches
To poised state, namely (such as 1min, 2min and 5min etc.) temperature changing value in preset time period
The least, detection kettle temperature is the second temperature value T2.Presetting intrinsic pressure value is P1, the second temperature detected
During angle value, record intrinsic pressure value now is P2, in like manner the second temperature difference Δ T2 may determine that into:
(P1-P2)/K=Δ T2.
The temperature protection point of pressure cooking pan is updated to T=T2+ Δ T2, further improves temperature
The accuracy of degree protection point.
The embodiment of a second aspect of the present invention, it is proposed that the detection method of a kind of temperature protection point, bag
Including: in preset time period, in detection, whether temperature changing value is less than or equal to preset temperature changing value；
When interior temperature changing value being detected less than or equal to preset temperature changing value, in record preset time period
Average temperature value is the second temperature value；Determine that intrinsic pressure value when described second temperature value being detected is with default
Draught head between intrinsic pressure value, is denoted as the second draught head；According to default draught head and temperature gap
Mapping relations, determine the second temperature gap that the second draught head is corresponding；According to the second temperature value and second
Temperature gap and determine temperature protection point.
In above-described embodiment, directly temperature state, the second temperature value T2 and the second temperature smoothly in detection
Difference DELTA T2, has more accurately determined temperature protection point, i.e. T=T2+ Δ T2.
Wherein, exhaust apparatus generally uses steam vent and pressure limiting valve, and the gravity of pressure limiting valve is put down with pot inner pressure
During weighing apparatus, now P=mg/S sets up, and wherein P characterizes the aerofluxus value of pressure limiting valve, and S characterizes the face of steam vent
Long-pending, m characterizes the quality of pressure limiting valve, and g characterizes gravity and accelerates (relevant to atmospheric pressure).Kettle temperature reaches
To poised state, namely (such as 1min, 2min and 5min etc.) temperature changing value in preset time period
The least, detection kettle temperature is the second temperature value T2.Presetting intrinsic pressure value is P1, the second temperature detected
During angle value, record intrinsic pressure value now is P2, in like manner the second temperature difference Δ T2 may determine that into:
(P1-P2)/K=Δ T2.
The temperature protection point of pressure cooking pan is updated to T=T2+ Δ T2, further improves temperature
The accuracy of degree protection point.
Preferably, in detection, whether temperature changing value is less than or equal to before preset temperature changing value, also wraps
Include: record detects zero intrinsic pressure initial time；Determine that initial time plays the preset time period of timing,
Wherein, zero time intrinsic pressure, detect that the first position under intrinsic pressure effect of the float in pressure cooking appliance becomes
Change.
In above-described embodiment, before the detection carrying out interior temperature poised state, first to pressure condition in zero in pot
Detect, and record initial time, in initial time plays the preset time period of timing, detect the second temperature
The poised state that angle value is corresponding, further increasing the accuracy of temperature protection point.
The embodiment of a third aspect of the present invention, it is proposed that the detection device of a kind of temperature protection point, bag
Include: detector unit, for detecting the first position under intrinsic pressure effect of the float in pressure cooking appliance
Change；Determine unit, for when first change in location being detected, determine that float is zero intrinsic pressure shape
State；Detector unit is additionally operable to: temperature value when detection zero is intrinsic pressure, is denoted as the first temperature value；Determine list
Unit is additionally operable to: determine default intrinsic pressure value and zero intrinsic pressure time intrinsic pressure value between draught head, be denoted as first
Draught head；Determine that unit is additionally operable to: according to the mapping relations of default draught head Yu temperature gap, really
The first temperature gap that fixed first draught head is corresponding；Determine that unit is additionally operable to: according to the first temperature value and
First temperature gap and determine temperature protection point.
In above-described embodiment, the float in pressure cooking pan can be mechanical type float, or floats for magnetic
Son, wherein, mechanical type float triggers the mechanical switch in float passage, mechanical switch under intrinsic pressure effect
Produce the corresponding signal that triggers to determine the first change in location of float, magnetic float and magnetic force induction module
Between distance change under intrinsic pressure effect, and then determine the initial position of float according to distance change
Change.
Due to the linear corresponding relation of pressure difference and temperature difference, (ideally linear coefficient K is about
5), as preset intrinsic pressure value P1 be 100Kpa, P0 be first change in location to be detected time intrinsic pressure value, T0
Characterize preset temperature protection point, then the first temperature gap Δ T1 may determine that into:
(P1-P0)/K=Δ T1.
To sum up, finally determine the temperature protection point T=T1+ Δ T1 of pressure cooking pan, T value is replaced soft
The T0 that part is preset, improves the use safety of pressure cooking pan.
Preferably, determine that unit is additionally operable to: in the preset time period after determining temperature protection point, inspection
In surveying, whether temperature changing value is less than or equal to preset temperature changing value；The detection device of temperature protection point is also
Including: record unit, for detecting that interior temperature changing value is less than or equal to preset temperature changing value
Time, the average temperature value in record preset time period is the second temperature value；Determine that unit is additionally operable to: really
Intrinsic pressure value when regular inspection measures described second temperature value and the draught head preset between intrinsic pressure value, be denoted as the
Two draught heads；Determine that unit is additionally operable to: according to the mapping relations of default draught head Yu temperature gap,
Determine the second temperature gap that the second draught head is corresponding；The detection device of temperature protection point also includes: more
New unit, for according to the second temperature value and the second temperature gap and update temperature protection point.
In above-described embodiment, by detect further interior temperature steady time, the second temperature value T2 and second
Temperature gap Δ T2, has more accurately determined temperature protection point, i.e. T=T2+ Δ T2.
Wherein, exhaust apparatus generally uses steam vent and pressure limiting valve, and the gravity of pressure limiting valve is put down with pot inner pressure
During weighing apparatus, now P=mg/S sets up, and wherein P characterizes the aerofluxus value of pressure limiting valve, and S characterizes the face of steam vent
Long-pending, m characterizes the quality of pressure limiting valve, and g characterizes gravity and accelerates (relevant to atmospheric pressure).Kettle temperature reaches
To poised state, namely (such as 1min, 2min and 5min etc.) temperature changing value in preset time period
The least, detection kettle temperature is the second temperature value T2.Presetting intrinsic pressure value is P1, the second temperature detected
During angle value, record intrinsic pressure value now is P2, in like manner the second temperature difference Δ T2 may determine that into:
(P1-P2)/K=Δ T2.
The temperature protection point of pressure cooking pan is updated to T=T2+ Δ T2, further improves temperature
The accuracy of degree protection point.
The embodiment of a fourth aspect of the present invention, it is proposed that the detection device of a kind of temperature protection point, bag
Including: detector unit, in preset time period, in detection, whether temperature changing value is less than or equal to pre-
If temperature change value；Record unit, for detecting that interior temperature changing value is less than or equal to preset temperature
During changing value, the average temperature value in record preset time period is the second temperature value；Determine unit, use
In the intrinsic pressure value determined when the second temperature value being detected and the draught head preset between intrinsic pressure value, it is denoted as the
Two draught heads；Determine that unit is additionally operable to: according to the mapping relations of default draught head Yu temperature gap,
Determine the second temperature gap that the second draught head is corresponding；Determine that unit is additionally operable to: according to the second temperature value
With the second temperature gap and determine temperature protection point.
In above-described embodiment, directly temperature state, the second temperature value T2 and the second temperature smoothly in detection
Difference DELTA T2, has more accurately determined temperature protection point, i.e. T=T2+ Δ T2.
Wherein, exhaust apparatus generally uses steam vent and pressure limiting valve, and the gravity of pressure limiting valve is put down with pot inner pressure
During weighing apparatus, now P=mg/S sets up, and wherein P characterizes the aerofluxus value of pressure limiting valve, and S characterizes the face of steam vent
Long-pending, m characterizes the quality of pressure limiting valve, and g characterizes gravity and accelerates (relevant to atmospheric pressure).Kettle temperature reaches
To poised state, namely (such as 1min, 2min and 5min etc.) temperature changing value in preset time period
The least, detection kettle temperature is the second temperature value T2.Presetting intrinsic pressure value is P1, the second temperature detected
During angle value, record intrinsic pressure value now is P2, in like manner the second temperature difference Δ T2 may determine that into:
(P1-P2)/K=Δ T2.
The temperature protection point of pressure cooking pan is updated to T=T2+ Δ T2, further improves temperature
The accuracy of degree protection point.
Preferably, record unit is additionally operable to: record detects zero intrinsic pressure initial time；Determine unit
It is additionally operable to: determining that initial time plays the preset time period of timing, wherein, zero detects pressure time intrinsic pressure
The float in cooking apparatus first change in location under intrinsic pressure effect.
In above-described embodiment, before the detection carrying out interior temperature poised state, first to pressure condition in zero in pot
Detect, and record initial time, in initial time plays the preset time period of timing, detect the second temperature
The poised state that angle value is corresponding, further increasing the accuracy of temperature protection point.
The embodiment of a fifth aspect of the present invention, it is proposed that a kind of pressure cooking pan, including: interior pot；
Upper cover, is provided with and coordinates the steam vent and pressure limiting valve assembled；As described in above-mentioned any one technical scheme
The detection device of temperature protection point, is arranged in internal side wall or the exterior side wall of interior pot, or is arranged at
In the interior bottom wall of interior pot or outside diapire, or it is arranged in upper cover, the detection device of temperature protection point
For determining the temperature protection point in interior pot cooking process；Cooker body, is provided with the receiving of interior pot in cooker body
Portion, cooker body is provided with in microprocessor, and cooker body and the region of interior pot is provided with heater,
Microprocessor is connected to the detection device temperature protection point with the interior pot of acquisition of temperature protection point, at Wei Chu
When reason device detects the temperature of interior pot more than or equal to temperature protection point, control heater stop work
Make.
In above-described embodiment, by the detection device of temperature protection point is arranged on interior pot, and examine in real time
In surveying, whether the temperature of pot is more than or equal to temperature protection point, improves the safety of pressure cooking pan,
It is applicable to the culinary art scene of Different Altitude Regions, meanwhile, it also avoid the electricity that food blocking steam vent causes
Gas is dangerous.
Preferably, including: radio communication device, it is located in cooker body or in upper cover, is connected to micro-process
Device, for obtaining the temperature protection point of interior pot, and backs up to pressure cooking pan by temperature protection point
In peripheral hardware storage device.
In above-described embodiment, by temperature protection point is backed up to peripheral hardware storage device, promote further
The reliability of pressure cooking pan, such as, peripheral hardware storage device can be Cloud Server or mobile eventually
End, Cloud Server can determine corresponding regional use demand and design according to reporting of temperature protection point
Standard, mobile terminal can improve making of user so that user checks temperature protection point and cooking process
With experience.
Additional aspect and the advantage of the present invention will be given in following description part, and part is by from following
Description becomes obvious, or recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from combining the accompanying drawings below description to embodiment
Will be apparent from easy to understand, wherein:
Fig. 1 shows the signal stream of the detection method of temperature protection according to an embodiment of the invention point
Cheng Tu；
Fig. 2 shows the signal of the detection method of temperature protection point according to another embodiment of the invention
Flow chart；
Fig. 3 shows the schematic block of the detection device of temperature protection according to an embodiment of the invention point
Figure；
Fig. 4 shows the signal of the detection device of temperature protection point according to another embodiment of the invention
Block diagram；
Fig. 5 to Fig. 9 shows the schematic diagram of the pressure cooking pan of the multiple embodiments according to the present invention；
Figure 10 shows the enlarged diagram of float according to an embodiment of the invention.
Detailed description of the invention
In order to be more clearly understood that the above-mentioned purpose of the present invention, feature and advantage, below in conjunction with attached
The present invention is further described in detail by figure and detailed description of the invention.It should be noted that not
In the case of conflict, the feature in embodiments herein and embodiment can be mutually combined.
Elaborate a lot of detail in the following description so that fully understanding the present invention, but,
The present invention can implement to use other to be different from mode described here, therefore, and the guarantor of the present invention
Scope of protecting is not limited by following public specific embodiment.
Fig. 1 shows the signal stream of the detection method of temperature protection according to an embodiment of the invention point
Cheng Tu.
As it is shown in figure 1, the detection method of temperature protection point according to an embodiment of the invention, bag
Including: step 102, the first position under intrinsic pressure effect of the float in detection pressure cooking appliance becomes
Change；Step 104, when first change in location being detected, determines that float is zero intrinsic pressure state；Step
Rapid 106, temperature value when detection zero is intrinsic pressure, it is denoted as the first temperature value；Step 108, determines default
Intrinsic pressure value and zero intrinsic pressure time intrinsic pressure value between draught head, be denoted as the first draught head；Step 110,
According to the mapping relations of default draught head Yu temperature gap, determine the first temperature that the first draught head is corresponding
Degree difference；Step 112, according to the first temperature value and the first temperature gap and determine temperature protection
Point.
In above-described embodiment, the float in pressure cooking pan can be mechanical type float, or floats for magnetic
Son, wherein, mechanical type float triggers the mechanical switch in float passage, mechanical switch under intrinsic pressure effect
Produce the corresponding signal that triggers to determine the first change in location of float, magnetic float and magnetic force induction module
Between distance change under intrinsic pressure effect, and then determine the initial position of float according to distance change
Change.
Due to the linear corresponding relation of pressure difference and temperature difference, (ideally linear coefficient K is about
5), as preset intrinsic pressure value P1 be 100Kpa, P0 be first change in location to be detected time intrinsic pressure value, T0
Characterize preset temperature protection point, then the first temperature gap Δ T1 may determine that into:
(P1-P0)/K=Δ T1.
To sum up, finally determine the temperature protection point T=T1+ Δ T1 of pressure cooking pan, T value is replaced soft
The T0 that part is preset, improves the use safety of pressure cooking pan.
Preferably, also including: in the preset time period after determining temperature protection point, in detection, temperature becomes
Whether change value is less than or equal to preset temperature changing value；Detecting that interior temperature changing value is less than or equal to pre-
If during temperature change value, the average temperature value in record preset time period is the second temperature value；Determine inspection
The draught head between intrinsic pressure value and default intrinsic pressure value when measuring described second temperature value, is denoted as the second gas
Pressure reduction；According to the mapping relations of default draught head Yu temperature gap, determine that the second draught head is corresponding
Second temperature gap；According to the second temperature value and the second temperature gap and update temperature protection point.
In above-described embodiment, by detect further interior temperature steady time, the second temperature value T2 and second
Temperature gap Δ T2, has more accurately determined temperature protection point, i.e. T=T2+ Δ T2.
Wherein, exhaust apparatus generally uses steam vent and pressure limiting valve, and the gravity of pressure limiting valve is put down with pot inner pressure
During weighing apparatus, now P=mg/S sets up, and wherein P characterizes the aerofluxus value of pressure limiting valve, and S characterizes the face of steam vent
Long-pending, m characterizes the quality of pressure limiting valve, and g characterizes gravity and accelerates (relevant to atmospheric pressure).Kettle temperature reaches
To poised state, namely (such as 1min, 2min and 5min etc.) temperature changing value in preset time period
The least, detection kettle temperature is the second temperature value T2.Presetting intrinsic pressure value is P1, the second temperature detected
During angle value, record intrinsic pressure value now is P2, in like manner the second temperature difference Δ T2 may determine that into:
(P1-P2)/K=Δ T2.
The temperature protection point of pressure cooking pan is updated to T=T2+ Δ T2, further improves temperature
The accuracy of degree protection point.
Fig. 2 shows the signal of the detection method of temperature protection point according to another embodiment of the invention
Flow chart.
As in figure 2 it is shown, the detection method of temperature protection point according to another embodiment of the invention, bag
Including: step 202, in preset time period, in detection, whether temperature changing value is less than or equal to presetting temperature
Degree changing value；Step 204, is detecting that interior temperature changing value is less than or equal to preset temperature changing value
Time, the average temperature value in record preset time period is the second temperature value；Step 206, determines detection
To intrinsic pressure value during the second temperature value and the draught head between default intrinsic pressure value, it is denoted as the second draught head；
Step 208, according to the mapping relations of default draught head Yu temperature gap, determines the second draught head pair
The second temperature gap answered；Step 210, according to the second temperature value and the second temperature gap and determine
Temperature protection point.
In above-described embodiment, directly temperature state, the second temperature value T2 and the second temperature smoothly in detection
Difference DELTA T2, has more accurately determined temperature protection point, i.e. T=T2+ Δ T2.
Wherein, exhaust apparatus generally uses steam vent and pressure limiting valve, and the gravity of pressure limiting valve is put down with pot inner pressure
During weighing apparatus, now P=mg/S sets up, and wherein P characterizes the aerofluxus value of pressure limiting valve, and S characterizes the face of steam vent
Long-pending, m characterizes the quality of pressure limiting valve, and g characterizes gravity and accelerates (relevant to atmospheric pressure).Kettle temperature reaches
To poised state, namely (such as 1min, 2min and 5min etc.) temperature changing value in preset time period
The least, detection kettle temperature is the second temperature value T2.Presetting intrinsic pressure value is P1, the second temperature detected
During angle value, record intrinsic pressure value now is P2, in like manner the second temperature difference Δ T2 may determine that into:
(P1-P2)/K=Δ T2.
The temperature protection point of pressure cooking pan is updated to T=T2+ Δ T2, further improves temperature
The accuracy of degree protection point.
Preferably, in detection, whether temperature changing value is less than or equal to before preset temperature changing value, also wraps
Include: record detects zero intrinsic pressure initial time；Determine that initial time plays the preset time period of timing,
Wherein, zero intrinsic pressure time pressure cooking pan the force value of the vertical direction suffered by float be zero, its
In, zero detects time intrinsic pressure that the first position under intrinsic pressure effect of the float in pressure cooking appliance becomes
Change.
In above-described embodiment, before the detection carrying out interior temperature poised state, first to pressure condition in zero in pot
Detect, and record initial time, in initial time plays the preset time period of timing, detect the second temperature
The poised state that angle value is corresponding, further increasing the accuracy of temperature protection point.
Fig. 3 shows the schematic block of the detection device of temperature protection according to an embodiment of the invention point
Figure.
As it is shown on figure 3, the detection device 300 of temperature protection point according to an embodiment of the invention,
Including: detector unit 302, for detecting the float in pressure cooking appliance at the beginning of under intrinsic pressure effect
Secondary change in location；Determine unit 304, for when first change in location being detected, determine described floating
Son is zero intrinsic pressure state；Detector unit 302 is additionally operable to, temperature value when detection zero is intrinsic pressure, is denoted as
First temperature value；Determine that unit 304 is additionally operable to, determine default intrinsic pressure value with zero intrinsic pressure time intrinsic pressure value
Between draught head, be denoted as the first draught head；Determine that unit 304 is additionally operable to: according to default air pressure
Difference and the mapping relations of temperature gap, determine the first temperature gap that the first draught head is corresponding；Determine list
Unit 304 is additionally operable to: according to the first temperature value and the first temperature gap and determine temperature protection point.
In above-described embodiment, the float in pressure cooking pan can be mechanical type float, or floats for magnetic
Son, wherein, mechanical type float triggers the mechanical switch in float passage, mechanical switch under intrinsic pressure effect
Produce the corresponding signal that triggers to determine the first change in location of float, magnetic float and magnetic force induction module
Between distance change under intrinsic pressure effect, and then determine the initial position of float according to distance change
Change.
Due to the linear corresponding relation of pressure difference and temperature difference, (ideally linear coefficient K is about
5), as preset intrinsic pressure value P1 be 100Kpa, P0 be first change in location to be detected time intrinsic pressure value, T0
Characterize preset temperature protection point, then the first temperature gap Δ T1 may determine that into:
(P1-P0)/K=Δ T1.
To sum up, finally determine the temperature protection point T=T1+ Δ T1 of pressure cooking pan, T value is replaced soft
The T0 that part is preset, improves the use safety of pressure cooking pan.
Preferably, determine that unit 304 is additionally operable to: the preset time period after determining temperature protection point
In, in detection, whether temperature changing value is less than or equal to preset temperature changing value；The detection of temperature protection point
Device 300 also includes: record unit 306, for detecting that interior temperature changing value is less than or equal to pre-
If during temperature change value, the average temperature value in record preset time period is the second temperature value；Determine list
Unit 304 is additionally operable to: determines intrinsic pressure value when described second temperature value being detected and presets between intrinsic pressure value
Draught head, be denoted as the second draught head；Determine that unit 304 is additionally operable to: according to default draught head with
The mapping relations of temperature gap, determine the second temperature gap that the second draught head is corresponding；Temperature protection point
Detection device also include: updating block 308, for according to the second temperature value and the second temperature gap
And update temperature protection point.
In above-described embodiment, by detect further interior temperature steady time, the second temperature value T2 and second
Temperature gap Δ T2, has more accurately determined temperature protection point, i.e. T=T2+ Δ T2.
Wherein, exhaust apparatus generally uses steam vent and pressure limiting valve, and the gravity of pressure limiting valve is put down with pot inner pressure
During weighing apparatus, now P=mg/S sets up, and wherein P characterizes the aerofluxus value of pressure limiting valve, and S characterizes the face of steam vent
Long-pending, m characterizes the quality of pressure limiting valve, and g characterizes gravity and accelerates (relevant to atmospheric pressure).Kettle temperature reaches
To poised state, namely (such as 1min, 2min and 5min etc.) temperature changing value in preset time period
The least, detection kettle temperature is the second temperature value T2.Presetting intrinsic pressure value is P1, the second temperature detected
During angle value, record intrinsic pressure value now is P2, in like manner the second temperature difference Δ T2 may determine that into:
(P1-P2)/K=Δ T2.
The temperature protection point of pressure cooking pan is updated to T=T2+ Δ T2, further improves temperature
The accuracy of degree protection point.
Fig. 4 shows the signal of the detection device of temperature protection point according to another embodiment of the invention
Block diagram.
As shown in Figure 4, the detection device of temperature protection point according to another embodiment of the invention
400, including: detector unit 402, in preset time period, in detection, temperature changing value is the least
In or equal to preset temperature changing value；Record unit 404, for detecting that interior temperature changing value is less than
Or during equal to preset temperature changing value, the average temperature value in record preset time period is the second temperature
Value；Determine unit 406, for determining intrinsic pressure value when the second temperature value being detected and default intrinsic pressure value
Between draught head, be denoted as the second draught head；Determine that unit 406 is additionally operable to: according to default air pressure
Difference and the mapping relations of temperature gap, determine the second temperature gap that the second draught head is corresponding；Determine list
Unit 406 is additionally operable to: according to the second temperature value and the second temperature gap and determine temperature protection point.
In above-described embodiment, directly temperature state, the second temperature value T2 and the second temperature smoothly in detection
Difference DELTA T2, has more accurately determined temperature protection point, i.e. T=T2+ Δ T2.
Wherein, exhaust apparatus generally uses steam vent and pressure limiting valve, and the gravity of pressure limiting valve is put down with pot inner pressure
During weighing apparatus, now P=mg/S sets up, and wherein P characterizes the aerofluxus value of pressure limiting valve, and S characterizes the face of steam vent
Long-pending, m characterizes the quality of pressure limiting valve, and g characterizes gravity and accelerates (relevant to atmospheric pressure).Kettle temperature reaches
To poised state, namely (such as 1min, 2min and 5min etc.) temperature changing value in preset time period
The least, detection kettle temperature is the second temperature value T2.Presetting intrinsic pressure value is P1, the second temperature detected
During angle value, record intrinsic pressure value now is P2, in like manner the second temperature difference Δ T2 may determine that into:
(P1-P2)/K=Δ T2.
The temperature protection point of pressure cooking pan is updated to T=T2+ Δ T2, further improves temperature
The accuracy of degree protection point.
Preferably, record unit 404 is additionally operable to: record detects zero intrinsic pressure initial time；Determine
Unit is additionally operable to: determining that initial time plays the preset time period of timing, wherein, zero detects time intrinsic pressure
The float in pressure cooking appliance first change in location under intrinsic pressure effect.
In above-described embodiment, before the detection carrying out interior temperature poised state, first to pressure condition in zero in pot
Detect, and record initial time, in initial time plays the preset time period of timing, detect the second temperature
The poised state that angle value is corresponding, further increasing the accuracy of temperature protection point.
Fig. 5 to Figure 10 shows the schematic diagram of pressure cooking pan according to an embodiment of the invention.
As shown in Fig. 5 to Figure 10, pressure cooking pan 500 according to an embodiment of the invention, including:
Cooker body 502；Upper cover, is provided with and coordinates the steam vent and pressure limiting valve 504 assembled；Such as above-mentioned any one
The detection device 506 of the temperature protection point described in technical scheme, is arranged on interior pot 508 or upper cover
In, the detection device 506 of temperature protection point is for determining the temperature protection in interior pot 508 cooking process
Point；Being provided with the receiving portion of interior pot 508 in cooker body 502, described cooker body 502 is provided with micro-process
In device, and cooker body 502, the region near described interior pot 508 is provided with heater 510, micro-place
Reason device is connected to the detection device 506 temperature protection point with the interior pot 508 of acquisition of temperature protection point,
Microprocessor detects that the temperature of interior pot 508 is more than or equal to temperature protection point time control refrigerating/heating apparatus
510 quit work.
Embodiment one:
As it is shown in figure 5, the detection device 506 of temperature protection point is located at the bottom side, inside of interior pot 508.
Embodiment two:
As shown in Figure 6, the detection device 506 of temperature protection point is located at the internal side wall of interior pot 508.
Embodiment three:
As it is shown in fig. 7, the detection device 506 of temperature protection point is located at the outside bottom side of interior pot 508.
Embodiment four:
As shown in Figure 8, the detection device 506 of temperature protection point is located at the exterior side wall of interior pot 508.
Embodiment five:
As it is shown in figure 9, the detection device 506 of temperature protection point is located at and is covered.
As shown in Figure 10, the float 512 such as pressure cooking pan 500 is magnetic, and accordingly, pressure is cooked
Prepare food and the upper cover of pan 500 the most correspondingly arranges magnetic force induction device 514, magnetic force induction device 514
Induced signal can relatively accurately reflect the shift position of float 512, zero intrinsic pressure time float 512 hanging down
Nogata upwards pressure experienced value is zero, and magnetic force induction device 514 is true according to the change in location of float 512
Determined for zero intrinsic pressure moment, and triggering determines temperature protection point.
By the detection device 506 of temperature protection point is arranged on the interior pot 508 of cooker body 502 and real
Time detection in temperature in pot 508 cooking process whether more than or equal to temperature protection point, improve pressure
The safety of cooking pot tool 500, it is adaptable to the culinary art scene of Different Altitude Regions, it also avoid meanwhile
The electrical hazard that food blocking steam vent 504 causes.
Preferably, including: radio communication device (not shown), it is located in described cooker body 502
Or in described upper cover, it is connected to microprocessor, for obtaining the temperature protection point of interior pot 508, and will
Temperature protection point backs up to (not shown) in the peripheral hardware storage device of pressure cooking pan 500.
In above-described embodiment, (figure does not shows by temperature protection point is backed up to peripheral hardware storage device
Go out), improve the reliability of pressure cooking pan 500 further, such as, peripheral hardware storage device can
To be Cloud Server or mobile terminal, Cloud Server can determine accordingly according to reporting of temperature protection point
The use demand in area and design standard, mobile terminal can be so that user checks temperature protection point and culinary art
Process, improves the experience of user.
Technical scheme is described in detail, it is contemplated that in correlation technique how above in association with accompanying drawing
Improving the accuracy of temperature protection point and the technical problem of the safety of pressure cooking pan, the present invention proposes
The detection device of a kind of temperature protection point and a kind of pressure cooking pan, by zero time intrinsic pressure first
Temperature value, and/or the second temperature value during interior temperature balance, more accurately determined temperature protection
Point, improves the safety of pressure cooking pan, it is adaptable to the culinary art scene of Different Altitude Regions, with
Time, it also avoid the electrical hazard that food blocking steam vent causes.
In the description of this specification, term " first ", " second " are only used for the purpose described, and can not
It is interpreted as instruction or hint relative importance；Term " connects ", " installation ", " fixing " etc. all should do broad sense
Understanding, such as, " connection " can be fixing connection, it is also possible to is to removably connect, or connects integratedly
Connect；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary.Common skill for this area
For art personnel, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this specification, the description of term " embodiment " etc. mean to combine this embodiment or
Example describe specific features, structure, material or feature be contained in the present invention at least one embodiment or
In example.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical enforcement
Example or example.And, the specific features of description, structure, material or feature can at any one or
Multiple embodiments or example combine in an appropriate manner.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for this area
Technical staff for, the present invention can have various modifications and variations.All in the spirit and principles in the present invention
Within, any modification, equivalent substitution and improvement etc. made, should be included in protection scope of the present invention
Within.
Claims (10)
1. the detection method of a temperature protection point, it is adaptable to pressure cooking appliance, its feature exists
In, described detection method includes:
Detect the first change in location under intrinsic pressure effect of the float in described pressure cooking appliance；
When described first change in location being detected, determine that described float is zero intrinsic pressure state；
Detect described zero intrinsic pressure time temperature value, be denoted as the first temperature value；
Determine default intrinsic pressure value and described zero intrinsic pressure time intrinsic pressure value between draught head, be denoted as the first gas
Pressure reduction；
According to the mapping relations of default draught head Yu temperature gap, determine that described first draught head is corresponding
The first temperature gap；
According to described first temperature value and described first temperature gap and determine temperature protection point.
The detection method of temperature protection point the most according to claim 1, it is characterised in that also
Including:
In preset time period after determining described temperature protection point, in detection, whether temperature changing value is less than
Or equal to preset temperature changing value；
When described interior temperature changing value being detected less than or equal to described preset temperature changing value, record institute
Stating the average temperature value in preset time period is the second temperature value；
Determine intrinsic pressure value when described second temperature value being detected and the draught head preset between intrinsic pressure value,
It is denoted as the second draught head；
According to the mapping relations of default draught head Yu temperature gap, determine that described second draught head is corresponding
The second temperature gap；
According to described second temperature value and described second temperature gap and update described temperature protection point.
3. the detection method of a temperature protection point, it is characterised in that be applicable to pressure cooking device
Tool, described detection method includes:
In preset time period, in detection, whether temperature changing value is less than or equal to preset temperature changing value；
When described interior temperature changing value being detected less than or equal to described preset temperature changing value, record institute
Stating the average temperature value in preset time period is the second temperature value；
Determine intrinsic pressure value when described second temperature value being detected and the draught head preset between intrinsic pressure value,
It is denoted as the second draught head；
According to the mapping relations of default draught head Yu temperature gap, determine that described second draught head is corresponding
The second temperature gap；
According to described second temperature value and described second temperature gap and determine temperature protection point.
The detection method of temperature protection point the most according to claim 3, it is characterised in that
In detection, whether temperature changing value is less than or equal to before preset temperature changing value, also includes:
Record detects zero intrinsic pressure initial time；
Determine that described initial time plays the preset time period of timing,
Wherein, described zero intrinsic pressure time detect that the float in described pressure cooking appliance is under intrinsic pressure effect
First change in location.
5. the detection device of a temperature protection point, it is adaptable to pressure cooking appliance, its feature exists
In, described detection device includes:
Detector unit, for detecting first under intrinsic pressure effect of the float in described pressure cooking appliance
Change in location；
Determine unit, be used for when described first change in location being detected, in determining that described float is zero
The state of pressure；
Described detector unit is additionally operable to: detect described zero intrinsic pressure time temperature value, be denoted as the first temperature
Value；
Described determine that unit is additionally operable to: determine default intrinsic pressure value and described zero intrinsic pressure time intrinsic pressure value between
Draught head, be denoted as the first draught head；
Described determine that unit is additionally operable to: according to the mapping relations of default draught head Yu temperature gap, really
The first temperature gap that fixed described first draught head is corresponding；
Described determine that unit is additionally operable to: according to described first temperature value and the sum of described first temperature gap
Determine temperature protection point.
The detection device of temperature protection point the most according to claim 5, it is characterised in that
Described determine that unit is additionally operable to: in the preset time period after determining described temperature protection point, inspection
In surveying, whether temperature changing value is less than or equal to preset temperature changing value；
The detection device of described temperature protection point also includes:
Record unit, for detecting that described interior temperature changing value is less than or equal to described default temperature
During degree changing value, recording the average temperature value in described preset time period is the second temperature value；
Described determine that unit is additionally operable to: determine intrinsic pressure value when described second temperature value being detected and preset
Draught head between intrinsic pressure value, is denoted as the second draught head；
Described determine that unit is additionally operable to: according to the mapping relations of default draught head Yu temperature gap, really
The second temperature gap that fixed described second draught head is corresponding；
The detection device of described temperature protection point also includes:
Updating block, for according to described second temperature value and described second temperature gap and more
New described temperature protection point.
7. the detection device of a temperature protection point, it is adaptable to pressure cooking appliance, its feature exists
In, described detection device includes:
Detector unit, in preset time period, in detection, whether temperature changing value is less than or equal to pre-
If temperature change value；
Record unit, for detecting that described interior temperature changing value becomes less than or equal to described preset temperature
During change value, recording the average temperature value in described preset time period is the second temperature value；
Determine unit, for determining intrinsic pressure value when described second temperature value being detected and default intrinsic pressure value
Between draught head, be denoted as the second draught head；
Described determine that unit is additionally operable to: according to the mapping relations of default draught head Yu temperature gap, really
The second temperature gap that fixed described second draught head is corresponding；
Described determine that unit is additionally operable to: according to described second temperature value and the sum of described second temperature gap
Determine temperature protection point.
The detection device of temperature protection point the most according to claim 7, it is characterised in that
Described record unit is additionally operable to: record detects zero intrinsic pressure initial time；
Described determine that unit is additionally operable to: determine that described initial time plays the preset time period of timing,
Wherein, described zero intrinsic pressure time detect that the float in described pressure cooking appliance is under intrinsic pressure effect
First change in location.
9. a pressure cooking pan, it is characterised in that including:
Interior pot；
Upper cover, is provided with and coordinates the steam vent and pressure limiting valve assembled；
The detection device of the temperature protection point as according to any one of claim 5 to 8, is arranged at institute
State in internal side wall or the exterior side wall of interior pot, or be arranged at interior bottom wall or the outer bottom of described interior pot
On wall, or be arranged in described upper cover, the detection device of described temperature protection point be used for determining described in
Temperature protection point in pot cooking process；
Cooker body, is provided with the receiving portion of described interior pot in described cooker body, described cooker body is provided with micro-process
In device, and described cooker body, the region near described interior pot is provided with heater, described microprocessor
It is connected to the detection device temperature protection point with the described interior pot of acquisition of described temperature protection point, described
When microprocessor detects the temperature of described interior pot more than or equal to described temperature protection point, control described
Heater stop works.
Pressure cooking pan the most according to claim 9, it is characterised in that including:
Radio communication device, is located in described cooker body or in described upper cover, is connected to described micro-process
Device, for obtaining the temperature protection point of described interior pot, and backs up to described pressure by described temperature protection point
In the peripheral hardware storage device of power cooking pot tool.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610514752.9A CN105919415B (en) | 2016-06-30 | 2016-06-30 | Detection method, device and the pressure cooking pan of temperature protection point |
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| CN201610514752.9A CN105919415B (en) | 2016-06-30 | 2016-06-30 | Detection method, device and the pressure cooking pan of temperature protection point |
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Also Published As
| Publication number | Publication date |
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| CN105919415B (en) | 2018-01-05 |
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