CN210408135U

CN210408135U - Temperature detecting module of cooker

Info

Publication number: CN210408135U
Application number: CN201821897054.2U
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhuji Wosi Environment Protection Technology Co ltd
Current assignee: Zhuji Wosi Environment Protection Technology Co ltd
Priority date: 2017-09-21
Filing date: 2017-09-21
Publication date: 2020-04-28
Anticipated expiration: 2027-09-21
Also published as: CN210408136U; CN209826350U; CN208243424U

Abstract

The utility model discloses a pan temperature detection module, pan temperature detection module has the temperature detection casing, the inside temperature detection circuit that is equipped with of temperature detection casing, the pan temperature is surveyed to the input of temperature detection circuit and is equipped with temperature detection component, the output termination of temperature detection circuit has output wire to come to be connected with audible-visual alarm module's input electricity, the pan temperature that the processing element of temperature detection circuit surveyed according to temperature detection component comes output pan excess temperature signal to audible-visual alarm module exports audible-visual alarm signal according to pan excess temperature signal and reminds the user to handle in time. The utility model discloses can reduce false alarm.

Description

Temperature detecting module of cooker

The application is the divisional application of the utility model with the application number of '2017212110228' and the name of 'an prevent dry combustion alarm device', and the content thereof is all introduced into the application.

Technical Field

The utility model relates to a kitchen utensil especially relates to a prevent dry combustion method alarm device.

Background

The condition of dry combustion occurs because the pan forgets to shut off fire in the use process, the consequence of the dry combustion is that the rice and the dishes are burnt, the pan is burnt out in serious conditions, and even fire disasters can be caused. In order to prevent dry heating, some pans are additionally provided with dry heating prevention alarms, the dry heating prevention alarms detect whether water in the pan is dry or not through the steam sensors, and when the pans are about to dry water, the alarms are triggered to alarm, so that a user is reminded to take measures in time. The steam sensor is usually arranged on the pot cover, a special detection hole is required to be arranged on the steam sensor, and sometimes the detection hole can be blocked by the meal, so that no steam is output and false alarm is generated.

SUMMERY OF THE UTILITY MODEL

To prior art's defect, the utility model aims to provide a prevent dry combustion method alarm device to reduce the misstatement rate.

For solving above technical problem, the technical scheme of the utility model a pan temperature detection module is provided, pan temperature detection module has the temperature detection casing, the inside temperature detection circuit that is equipped with of temperature detection casing, the pan temperature is surveyed to the input of temperature detection circuit and is equipped with temperature detection component, the output termination of temperature detection circuit comes to be connected with audible-visual alarm module's input electricity, the pan temperature that temperature detection circuit's processing element surveyed according to temperature detection component comes output pan excess temperature signal, so that audible-visual alarm module exports audible-visual alarm signal according to pan excess temperature signal and reminds the user in time to handle.

Compared with the prior art, the utility model discloses prevent dry combustion method alarm device is provided with pan temperature detection module and audible-visual alarm module, and the temperature sharply risees when the pan is dry water, and pan temperature detection module output pan excess temperature signal triggers audible-visual alarm module output audible-visual signal from this and reports to the police, reminds the user to handle in time from this. The temperature of the cookware is detected to give an alarm, the structure of the cookware does not need to be changed, the parts are convenient to install, the truth degree is high, and the over-high false alarm rate is avoided.

Drawings

FIG. 1 is a schematic structural view of the dry burning prevention alarm device of the present invention;

FIG. 2 is a schematic structural diagram of the temperature sensing module of the cooking appliance of FIG. 1;

fig. 3 is a functional circuit schematic diagram of the temperature detecting module and the acousto-optic alarm module of the pot in fig. 1.

Detailed Description

For the purpose of promoting an understanding of the invention, reference will now be made in detail to the embodiments illustrated in the drawings.

Referring to fig. 1-3, the basic structure of the dry burning prevention alarm device of the present invention is shown. This prevent dry combustion method alarm device includes that the pan surveys temperature module 5 and audible-visual alarm module 4, the outer wall at pan 1 is installed to pan temperature module 5, audible-visual alarm module 4 is installed at pan 1, gas-cooker (not shown) or other suitable positions, pan temperature module 5 electricity is connected to audible-visual alarm module 4 is visited to the pan, wherein the temperature of pan 1 is surveyed to pan temperature module 5, 1 dry water and lead to the temperature sharply to rise the time output pan excess temperature signal at pan, audible-visual alarm module 4 exports audible-visual alarm signal according to the pan excess temperature signal, remind the user in time to handle from this. It reports to the police through the temperature that detects pan 1, need not to change pan structure itself, and part simple to operate, its true degree is high, has avoided too high false alarm rate.

The utility model discloses prevent dry combustion method alarm device is applied to pan + gas-cooker combination. Generally, a stove rack (not shown) is installed above a table top of the gas stove, a stove core (not shown) is installed at the stove rack, the stove core is connected with a gas pipe (not shown) of an electromagnetic gas valve (not shown), and the pot 1 is carried on the stove rack for heating. Wherein, the pan 1 is provided with an open pan body, and the outer wall thereof is provided with a pan temperature detecting module 5. Preferably, the pan body is provided with a pan handle 3, the pan handle 3 is provided with a pan handle frame 31 which is approximately L-shaped, the short folding edge of the pan handle frame 31 is fixed with the pan body through a screw, and the long folding edge of the pan handle frame 31 is provided with an anti-scald sleeve (which can be plastic) 32. Furthermore, the pot 1 is optionally provided with a lid 2 for covering the pot, wherein the lid 2 is provided with a scald-proof lid top 21, which is not described in detail here.

In this embodiment, the pot temperature detection module 5 and the audible and visual alarm module 4 can be separately separated from the pot 1 and the gas stove, when in use, the pot temperature detection module 5 is installed on the pot 1, and the audible and visual alarm module 4 is installed on the pot handle frame 31 or the gas stove or other places, wherein the pot 1 and the gas stove can be common products sold in the market.

As shown in fig. 1, the sound and light alarm module 4 is mounted on the long edge (below or above) of the handle frame 31 of the pot 1 by screws or glue; the shell of the acousto-optic alarm module 4 can be arranged on the table top of the gas stove through screws, and the shell of the acousto-optic alarm module 4 can be adhered to the table top of the gas stove through high-strength glue (such as AB glue). The sound and light alarm module 4 is electrically connected with the cookware temperature detection module 5 through a wire and can output sound and light signals to alarm.

As shown in fig. 1, the pot temperature detection module 5 is installed on the outer wall of the pot 1, preferably arranged at a position of the pot 1 close to the pot rack of the stove, and specifically, the pot temperature detection module 5 can be installed on the pot 1 in an adsorption manner (such as a magnet, a sucker and the like), so that the pot temperature detection module 5 is convenient to detach. The pot temperature detecting module 5 detects the temperature of the pot 1, is electrically connected to the audible and visual alarm module 4, and can output a pot over-temperature signal (high level or low level signal) when the temperature of the pot 1 is increased sharply due to water dryness.

As shown in fig. 2, the pot temperature detecting module 5 includes a temperature detecting housing 51, which can be made of a common fire-resistant material on the market, and is internally installed with a temperature detecting circuit, wherein the input end of the temperature detecting circuit is installed with a temperature detecting element 52 (which can be a thermistor) for detecting the temperature of the pot, the output end of the temperature detecting circuit is connected with an output wire 54 for electrically connecting with the input end of the audible and visual alarm module 4, and the processing element (which can be a comparator) of the temperature detecting circuit outputs a pot over-temperature signal according to the temperature of the pot detected by the temperature detecting element 52. Wherein the detecting part of the temperature detecting element 42 is provided with an arc-shaped detecting surface so as to be better attached to the outer wall of the cooker. The temperature detecting shell 51 is provided with (e.g. embedded, bonded by high strength AB glue) the magnet 53, so that the cookware temperature detecting module 5 can be firmly fixed on the cookware 1 through the magnet 53, and is convenient to detach.

The utility model discloses pan temperature detection module and audible-visual alarm module's functional circuit all can adopt multiple structure, and the following is a preferred embodiment, has simple structure, the cost is lower, the reliable advantage of function, explains as follows further.

As shown in fig. 3, the temperature detecting circuit 100 is disposed inside the pot temperature detecting module, the alarm circuit 200 is disposed inside the audible and visual alarm module, and the temperature detecting circuit 100 is electrically connected to the alarm circuit 200 to control the alarm operation of the alarm circuit. Here, the temperature detecting circuit 100 is installed in the casing of the cookware temperature detecting module, and the alarm circuit 200 is installed in the casing of the audible and visual alarm module, and the installation is fixed in a conventional manner.

As shown in fig. 3, the temperature detecting circuit 100 includes a comparator a1 and a thermistor RT1, which may be a positive temperature coefficient or a negative temperature coefficient. When the thermistor has a positive temperature coefficient, the non-inverting input end of the comparator A1 is used as a fixed end, and the thermistor RT1 is connected to the inverting input end of the comparator A1 and used as a comparison end; when the thermistor RT1 has a negative temperature coefficient, the inverting input of the comparator a1 serves as a fixed terminal. The thermistor RT1 is connected to the non-inverting input of the comparator A1 as the comparison terminal.

The following is an example of a negative temperature coefficient thermistor connection that decreases in resistance as temperature increases, thereby causing the voltage at the non-inverting input of comparator a1 to increase, as further described below.

As shown in fig. 3, the inverting input terminal of the comparator a1 is connected to the positive power supply terminal VCC1 of the temperature detecting circuit 100 through a resistor R1, and is grounded through a resistor R2; the non-inverting input end of the comparator A1 is connected with the positive power supply end VCC1 of the temperature detecting circuit 100 through a negative temperature coefficient thermistor RT1 and is grounded through a resistor R3; the output of comparator a1 is coupled to the input of alarm circuit 200. The comparator A1 can be powered by a single power supply or a double power supply, and the power supply end is connected in a conventional manner. When the temperature of the cooker 1 rises, the negative temperature coefficient thermistor RT1 is reduced, the divided voltage of the non-inverting input end of the comparator A1 rises, and is larger than the voltage of the inverting input end of the comparator A1, namely the comparison end voltage VA > the fixed end voltage VB, so that the comparator A1 outputs high level; otherwise, the low level is output. Thus, the operation of the alarm circuit 200 can be triggered according to the high and low levels output by the comparator a 1.

As shown in fig. 3, the alarm circuit 200 includes a buzzer LS1, a light emitting diode D1, a triode T1, and the like, wherein a resistor R5 and the light emitting diode connected in series are connected in parallel between the positive terminal and the negative terminal of the buzzer LS1, the positive terminal of the buzzer LS1 is connected to the positive terminal VCC2 of the power supply of the alarm circuit 200, the negative terminal of the buzzer LS1 is connected to the collector of the triode (NPN type) T1, the emitter of the triode T1 is grounded, the base of the triode T1 is connected to the resistor R4, and the resistor R4 is connected to the output terminal of the temperature detecting circuit 100, specifically, the output terminal of the comparator a 1. When the temperature detecting circuit 100 outputs a high level, the triode T1 is turned on, the buzzer LS1, the light emitting diode D1 and the resistor R5 are connected in series to form a current loop, that is, the buzzer LS1 sounds, and the light emitting diode D1 emits light to alarm, so that the user is prompted to take measures in time.

In this embodiment, VCC1 and VCC2 may be rechargeable batteries, and other components may be selected from conventional commercial products. One of the parameters is: VCC 1-5V, VCC 2-5V, R1-R2-R3-2K Ω, R4-1K Ω, and R5-100 Ω, although other combinations of parameters may be used.

In the circuit, when the temperature of the cookware is increased sharply during water drying, the resistance of a thermistor RT1 with a negative temperature coefficient is reduced, the divided voltage of the non-inverting input end of a comparator A1 is increased and is larger than the voltage of the inverting input end of a comparator A1, namely the voltage of a comparison end VA is larger than the voltage of a fixed end VB, and therefore the comparator A1 outputs a high level; therefore, the triode T1 is conducted, the serial branch of the buzzer LS1, the light emitting diode D1 and the resistor R5 forms a current loop, namely the buzzer LS1 sounds and the light emitting diode D1 gives out light and gives an alarm, so that a user is prompted to take measures in time, and unsafe accidents can be reduced.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make modifications and changes without departing from the spirit and scope of the present invention.

Claims

1. A cookware temperature detection module is characterized in that the cookware temperature detection module is provided with a temperature detection shell, a magnet is attached to the temperature detection shell through a high-strength AB adhesive tape, the temperature detection shell is mounted on the outer wall of a cookware, close to a cookware pot rack, through magnet adsorption, a temperature detection circuit is mounted inside the temperature detection shell, a temperature detection element is mounted at the input end of the temperature detection circuit and used for detecting cookware temperature, the output end of the temperature detection circuit is connected with an output lead and electrically connected with the input end of an audible and visual alarm module, and a processing element of the temperature detection circuit outputs a cookware over-temperature signal according to the cookware temperature detected by the temperature detection element, so that the audible and visual alarm module outputs the audible and visual alarm signal according to the cookware over-temperature signal to remind a user of timely; the temperature detecting element is a positive temperature coefficient thermistor, the processing element is a comparator, the non-inverting input end of the comparator A1 is used as a fixed end, and the thermistor is connected to the inverting input end of the comparator to be used as a comparison end.

2. The cookware temperature-sensing module as claimed in claim 1, wherein the sensing part of the temperature-sensing element has an arc-shaped sensing surface for engaging with the outer wall of the cookware.