CN213551296U - Bottom temperature sensing device of heating container - Google Patents

Abstract

The utility model relates to a bottom temperature sensing device of heating vessel, its characterized in that: including being used for holding the base of putting heating container, be equipped with the heating plate that gives heating container heating through heat-conduction mode on the base, the heating plate surface is face contact with the heating container bottom surface, the heating plate be equipped with the temperature sensor that is higher than this heating plate surface on the surface, this temperature sensor and heating container direct contact. The utility model discloses heating container's temperature sensing device's theory of operation, this heating plate are the source that generates heat, and its surface is face contact with the heating container bottom surface to be favorable to improving heat-conducting efficiency, can shorten the time of heating under the condition of same power, be equipped with the temperature detector that is higher than this heating plate surface on the heating plate surface, and this temperature detector and heating container direct contact, thereby make the temperature detector can directly record the problem of heating container and its internal liquid, the temperature sensing is more accurate.

Description

Bottom temperature sensing device of heating container

The technical field is as follows:

the utility model relates to a bottom temperature sensing device of heating container, its mainly used glass cup or stainless steel cup etc. carry out accurate temperature sensing, and specially adapted uses heating tube or PTC, thick film, electric pottery stove etc. to use as the heat-generating body in source of generating heat and the product of cup for the components of a whole that can function independently design, uses on transferring products such as milk ware, health preserving kettle, electric kettle, boiling tea set.

Background art:

the heating body (heating plate) and the cup body (heating container) of the existing heating source on the market at present are designed separately (without IH heating mode), such as a milk adjusting device, a health preserving kettle, an electric heating kettle and a temperature sensing device of a tea boiling device;

the temperature sensing device of the tea boiling device heated by the electric ceramic stove is a thermocouple and mainly senses the temperature of the microcrystal panel to generate the on-off action of high and low temperatures, and the firepower gear controlled by the circuit can only control the output power of the tea boiling device, but cannot detect the actual temperature of a heating container or water.

The invention content is as follows:

in view of the deficiencies of the prior art, an object of the utility model is to provide a heating container's temperature sensing device, this heating container's temperature sensing device simple structure, reasonable in design are favorable to comparatively accurately detecting the temperature of heating container and its internal splendid attire liquid to be favorable to improving heating efficiency.

The utility model discloses heating vessel's temperature sensing device, its characterized in that: including being used for holding the base of putting heating container, be equipped with the heating plate that gives heating container heating through heat-conduction mode on the base, the heating plate surface is face contact with the heating container bottom surface, the heating plate be equipped with the temperature sensor that is higher than this heating plate surface on the surface, this temperature sensor and heating container direct contact.

Furthermore, the surface of the heating plate is provided with a boss of which the upper end surface is higher than the surface of the heating plate, and the temperature sensor is arranged in the central part of the boss.

Furthermore, the shell on the base, which is positioned on the periphery of the heating plate, is slightly higher than the surface of the heating plate, or is flush with the surface of the heating plate, or is slightly lower than the surface of the heating plate.

Furthermore, the shell body positioned on the periphery of the heating plate on the base is far higher than the surface of the heating plate, so that a concave groove used for surrounding and bearing the lower part of the heating container is formed on the base.

Further, the temperature sensor is an NTC temperature sensor or an infrared sensor.

Furthermore, the temperature sensor is connected with the surface of the heating plate in a sliding mode, and the starting station and the ending station of the sliding correspondingly realize the electrification and the outage of the heating plate.

Furthermore, a slotted hole is formed in the heating plate, a guide sleeve is fixedly arranged in the slotted hole, a sliding sleeve is arranged in the guide sleeve, one end, facing the heating container, of the sliding sleeve is fixedly provided with the temperature sensor, one end, far away from the heating container, of the sliding sleeve is in contact with the travel switch, an outer flange is arranged in the middle section of the sliding sleeve, a compression spring which pushes the sliding sleeve to one side of the heating container is sleeved at the lower side part of the outer flange on the sliding sleeve, and when the temperature sensor is pressed by the heating container to enable the sliding sleeve to move downwards to the bottom, the travel switch conducts a power supply of the heating plate to realize the; when the temperature sensor is not pressed by the heating container, the sliding sleeve moves upwards under the action of the compression spring, and the power supply of the heating plate in the base is cut off by the travel switch to realize the power-off of the heating plate.

Furthermore, the heating container is a glass container, and comprises a glass cup body and a glass cup bottom integrated with the glass cup body, wherein the glass cup bottom is provided with an upper boss, the upper boss is used for accommodating a temperature sensor protruding on the surface of the heating plate, and the temperature sensor is in direct contact with the bottom surface of the upper boss.

Further, above-mentioned heating plate includes aluminium base board and establishes the electric heating pipe that is the spiral setting at aluminium base board lower surface, and aluminium base board upper surface laminates with the heating container bottom surface mutually, perhaps the heating plate includes die-casting aluminum plate and establishes the electric heating pipe that is the spiral setting at die-casting aluminum plate lower surface, and the surface spraying teflon behind the die-casting aluminum plate shaping, die-casting aluminum plate upper surface laminate with glass heating container bottom surface mutually.

Furthermore, the flatness tolerance of the surface of the heating plate, which is jointed with the bottom surface of the heating container, is 0.03-0.10 mm.

The utility model discloses heating container's temperature sensing device's theory of operation, this heating plate are the source that generates heat, and its surface is face contact with the heating container bottom surface to be favorable to improving heat-conducting efficiency, can shorten the time of heating under the condition of same power, be equipped with the temperature detector that is higher than this heating plate surface on the heating plate surface, and this temperature detector and heating container direct contact, thereby make the temperature detector can directly record the problem of heating container and its internal liquid, the temperature sensing is more accurate.

Description of the drawings:

fig. 1 is a schematic perspective view of a base according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional configuration of FIG. 1;

FIG. 3 is a schematic cross-sectional configuration of the heating vessel of FIG. 2;

FIG. 4 is a schematic diagram of the internal construction of one embodiment of the base;

FIG. 5 is a schematic view of the internal construction of another embodiment of the base;

FIG. 6 is a schematic sectional view of the glass heating vessel according to the present invention;

FIG. 7 is an enlarged view of portion A of FIG. 6;

FIG. 8 is a schematic cross-sectional view of the heating plate;

FIG. 9 is a temperature control schematic block diagram.

The specific implementation mode is as follows:

the method of the present invention will be described in further detail with reference to examples. It should be noted that the protection scope of the present invention should include, but not be limited to, the technical content disclosed in the present embodiment.

The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.

The utility model discloses heating vessel's temperature sensing device is including the base A1 that is used for holding heating vessel, be equipped with on the base and give heating plate A2 that heating vessel heated through heat-conduction mode, heating plate surface A3 is face contact with heating vessel bottom surface A4, the heating plate be equipped with on the surface and be higher than this heating plate surface A3's temperature sensor A5, this temperature sensor and heating vessel direct contact.

The heating plate is a heating source, the surface of the heating plate is in surface contact with the bottom surface of the heating container, so that the efficiency of heat conduction is improved, the heating time can be shortened under the condition of the same power, a temperature sensor higher than the surface of the heating plate is arranged on the surface of the heating plate, the temperature sensor is in direct contact with the heating container, the temperature sensor can directly measure the problem of the heating container and liquid in the heating container, and the temperature sensing is more accurate.

In one embodiment, the heating plate surface A3 has a boss a6 with an upper end higher than the heating plate surface, and the temperature sensor a5 is provided in the center of the boss a 6.

There are a variety of shapes for the base:

one of them is, the casing that lies in heating plate all around on above-mentioned base A1 is a little higher than heating plate surface to form a ladder around the heating plate, can play certain limiting displacement to heating container, the heating plate all around casing also can with heating plate surface parallel and level, perhaps be a little less than heating plate surface again all can.

The other shape of the base is that the shell body positioned on the periphery of the heating plate on the base is far higher than the surface of the heating plate so as to form a concave groove A0 for surrounding and bearing the lower part of the heating container on the base, the groove depth of the concave groove A0 is 10-120 mm, preferably 50-60mm, and the groove depth is 50-60mm through the concave groove, thereby being beneficial to guiding the heating container when the heating container is placed in the concave groove of the base, and more importantly, the shell body can not easily contact the surface of the heating plate with higher temperature, and scalding is avoided.

For convenient use, reliable and stable, above-mentioned temperature-sensing ware can be NTC temperature sensor or be infrared ray sensor, and NTC temperature sensor is the NTC resistance thermal temperature sensor who sells widely used in the market, and it contacts with the object surface that awaits measuring (be heating container bottom surface or last boss bottom surface in this application) during the use, and NTC resistance thermal temperature sensor temperature contact is more accurate, and with low costs, and infrared ray sensor also is a temperature-sensing element of kettle.

In order to realize that the heating container is placed on the heating plate, the power supply can be switched on for heating, and the power supply is switched off after the heating container is taken away, the temperature sensor is in sliding connection relative to the surface of the heating plate, the starting station and the ending station which slide correspondingly realize the power on and off of the heating plate, and the temperature sensor is in sliding connection relative to the surface of the heating plate.

As shown in the figure (other fixing or limiting structures are omitted in the figure), a slotted hole A7 is arranged on the heating plate of the base a1, a guide sleeve A8 is fixedly arranged in the slotted hole A7, a sliding sleeve A9 is arranged in the guide sleeve A8, a concave part is arranged at one end (upper part) of the sliding sleeve A9 facing the heating container, the concave part is fixedly provided with the temperature sensor A5, a lead of the temperature sensor A5 passes through the sliding sleeve A9 to be electrically connected with the controller in the base, one end (lower part) of the sliding sleeve A9 far away from the heating container is contacted with a travel switch a10, the travel switch a10 can be a metal elastic plectrum and the like, the power supply of the heating plate is switched on when being pressed by the sliding sleeve, the power supply of the heating plate is switched off when not being pressed by the sliding sleeve, an outer flange a11 is arranged at the middle section of the sliding sleeve A9, the outer periphery of the a11 is equivalent to the inner periphery of the guide sleeve A8, a12 is sleeved on the, one end of the compression spring A12 is pressed against the lower side surface of the outer flange A11, and the other end of the compression spring A12 is pressed against a fixing piece in the base body.

Another travel switch a10 can be a rocker switch, when the sliding sleeve a9 is pushed towards the end (lower) far away from the heating container, the peripheral wall of the sliding sleeve a9 abuts against the rocker of the rocker switch, so that the rocker and the contact rod are connected to realize power on, and conversely, the power off is realized.

When the temperature sensor works, the travel switch conducts the power supply of the heating plate in the base to realize the electrification of the heating plate when the temperature sensor is pressed by the heating container to enable the sliding sleeve to move downwards to the bottom; the temperature sensor is not pressed by the heating container, the sliding sleeve moves upwards under the action of the compression spring, the power supply of the heating plate in the base is cut off by the travel switch to realize the power-off of the heating plate, and the bases of the two embodiments are both suitable for the sliding structure.

For reasonable design, the heating plate A2 comprises an aluminum substrate A13 and an electric heating tube A14 which is arranged on the lower surface of the aluminum substrate in a spiral shape, and the upper surface of the aluminum substrate A13 is attached to the bottom surface A4 of the glass heating container; the aluminum substrate is more than or equal to 2.5mm in thickness, mirror-polished on the surface, the flatness tolerance is preferably less than or equal to 0.03mm, and the spirally-arranged electric heating pipe can enable heating to be more uniform, or the heating plate comprises a die-casting aluminum plate and a spirally-arranged electric heating pipe arranged on the lower surface of the die-casting aluminum plate, the surface of the die-casting aluminum plate is sprayed with teflon after molding, and the upper surface of the die-casting aluminum plate is attached to the bottom surface of the glass heating container; the electric heating pipe is a conventional heating element, but is usually coiled into a circular ring shape at present and fixed on a heating body, and has the problem of uneven heating, namely the temperature of the circular ring shape near the electric heating pipe is high, and the temperature of the electric heating pipe far away from the circular ring shape is low, so that the condition of uneven heating can be generated, and air blasting of large bubbles can be generated, and overlarge noise is caused, but the electric heating pipe which is spirally arranged in the application can ensure the uniform temperature of the whole aluminum substrate although the length of the electric heating pipe is slightly increased, and is also beneficial to reducing the air blasting noise of water-boiling bubbles, the electric heating pipe can be sunk into a spiral channel on the lower surface of the aluminum substrate (the contact surface between the electric heating pipe and the aluminum substrate is increased, the heat conduction effect is improved), or is directly arranged on the planar lower surface of the electric heating pipe, the contact diameter between the bottom surface of, thereby securing a surface contact area.

The heating plate is better, and certainly, structures such as a thick-film heating plate, a PTC heating body and a profile aluminum substrate can also be adopted, but the thick-film heating plate is expensive, the surface of the heating plate can only be a stainless steel base material at present, the surface deformation is larger, and the surface processing difficulty is larger; and the PTC heating element and the section aluminum substrate are not easy to assemble, and the matched structure for installation is complex.

In order to realize temperature control, a temperature sensor (NTC temperature sensor) A5 and a travel switch A10 are electrically connected with a controller A15 positioned in the base, and the controller A15 is electrically connected with an electric heating pipe of the heating plate A2; the NTC temperature sensor, the travel switch and the controller are widely used products sold in the market, and the electronic components are widely adopted to form a temperature control circuit in the electric heating kettle and the like at present.

The working principle of temperature control is as follows: the heating plate is controlled to generate heat through the controller, the heating plate conducts the heat to the bottom of the glass cup through the contact of the surface and the face and heats liquid in the glass cup body, the temperature of heating liquid in the glass cup can be sensed through the temperature sensor (NTC temperature sensor), when the temperature reaches a set value, the temperature sensor transmits a signal to the controller, and the controller controls the electric heating pipe to be powered off, so that the temperature required to be controlled is reached.

In order to realize better heat conduction efficiency, the flatness tolerance of the surface of the heating plate, which is jointed with the bottom surface of the heating container, is 0.03-0.10 mm.

The application heating container can be glass container (can adopt high boron glass), and it includes glass body 1 and forms integrative glass bottom of cup 2, glass bottom of cup has boss 5, and glass bottom of cup 2's thickness is between 1.0-2.2 mm, and the preferred adopts 1.2-1.7mm, and the wall thickness of going up boss 5 department is equivalent with the aforesaid, go up the boss and be used for holding heating plate A2 bellied temperature sensor A5 on the surface, the bottom surface of boss is gone up in the temperature sensor direct contact.

The bottom surface of the heating container can be provided with the coating 4 with the heat-conducting metal powder, so that the flatness tolerance of the bottom surface after coating is brushed is also 0.02-0.20mm, the better flatness tolerance is 0.03-0.1 mm or 0.03-0.05 mm, and the heat-conducting efficiency can be further improved by adding the coating.

The coating 4 with the heat-conducting metal powder is specifically materials such as high-temperature resistant paint and high-temperature resistant ink containing the heat-conducting metal powder (the metal powder in the high-temperature resistant paint and the high-temperature resistant ink needs to be fully and uniformly stirred by a stirrer, the weight of the metal powder in the high-temperature resistant paint and the high-temperature resistant ink is not less than 20 percent during mixing and stirring), the materials such as the high-temperature resistant paint and the high-temperature resistant ink can be purchased from the market, the heat-conducting metal powder (the weight is not less than 20 percent of the total weight after configuration) is doped in the materials, and the thickness of the coating 4 is 0; the heating efficiency can be improved by brushing the coating 4 with the heat-conducting metal powder on the bottom surface 3 of the glass cup bottom 2, and the metal powder can be metal aluminum powder, metal copper powder and the like.

The main reason that the prior full glass container as a water boiler cannot be widely popularized is that the heating efficiency of the water boiler of the prior glass container is extremely low, namely, for example, 1200 ml of water needs more than one hour for heating from 25 ℃ to 100 ℃, but the application overcomes the problem which cannot be overcome for a long time and is a revolutionary product; the applicant finds through research that the reason that the heating efficiency of the glass container adopting the heating pipe arranged on the bottom surface is low is that the surface of the bottom surface of the glass container is high, low and extremely uneven in microscopic view, the contact between the heating pipe and the bottom surface of the glass container is line contact, the contact area is extremely effective, the heating efficiency is low and uneven, and even if the heating plate constructed by the application is used as a heating source, the contact area between the heating pipe and the bottom surface of the glass container is still limited, and the heating efficiency is still low.

The whole body of the glass heating container is made of glass, and the glass heating container can be immersed into water to be cleaned without any electronic element (the electronic element is positioned in the base), so that dirt on the glass heating container can be completely removed, and the drinking water quality of people is ensured; meanwhile, the glass heating container does not generate electromagnetic radiation or infrared radiation generated by an electric ceramic furnace without using an electromagnetic heating technology, and does not have health influence on human bodies, and the glass heating container is simple to manufacture, low in cost and easy to sell, popularize and use; in addition this application is through base heating plate and the heat-conduction of bottom of cup for the face contact, heat conduction area is big and even, can be covered with tiny bubble at glass bottom of cup internal surface among the heating process, the noise that produces when tiny bubble explodes is less, and the electric heating pipe that current generally adds hot water kettle or transfers the milk ware is the ring form and fixes at the bottom of cup, make its heating concentrate on the round of ring, the bubble of production also concentrates on the round of this ring, at the in-process of heating up water, will produce the air blasting of great bubble because of heating inhomogeneous at the round of ring, arouse too big noise.

The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.

Claims (10)

1. A bottom temperature sensing device of a heating container is characterized in that: including being used for holding the base of putting heating container, be equipped with the heating plate that gives heating container heating through heat-conduction mode on the base, the heating plate surface is face contact with the heating container bottom surface, the heating plate be equipped with the temperature sensor that is higher than this heating plate surface on the surface, this temperature sensor and heating container direct contact.

2. The bottom temperature sensing device of the heating container according to claim 1, wherein: the heating plate surface has the boss that the up end is higher than the heating plate surface, the temperature sensor is established in boss central part.

3. The bottom temperature sensing device of the heating container according to claim 1, wherein: the shell positioned on the periphery of the heating plate on the base is slightly higher than the surface of the heating plate, or is flush with the surface of the heating plate, or is slightly lower than the surface of the heating plate.

4. The bottom temperature sensing device of the heating container according to claim 1, wherein: the shell positioned around the heating plate on the base is far higher than the surface of the heating plate so as to form a concave groove for surrounding and bearing the lower part of the heating container on the base.

5. The bottom temperature sensing device of the heating container according to claim 1, 2, 3 or 4, wherein: the temperature sensor is an NTC temperature sensor or an infrared sensor.

6. The bottom temperature sensing device of the heating container according to claim 1, 2, 3 or 4, wherein: the temperature sensor is in sliding connection relative to the surface of the heating plate, and the starting station and the ending station which slide correspondingly realize the electrification and the outage of the heating plate.

7. The bottom temperature sensing device of the heating container according to claim 1, 2, 3 or 4, wherein: the heating plate is provided with a slotted hole, a guide sleeve is fixedly arranged in the slotted hole, a sliding sleeve is arranged in the guide sleeve, one end of the sliding sleeve, facing the heating container, is fixedly provided with the temperature sensor, one end of the sliding sleeve, far away from the heating container, is in contact with the travel switch, an outer flange is arranged in the middle section of the sliding sleeve, a compression spring which pushes the sliding sleeve to one side of the heating container is sleeved at the lower side part of the outer flange on the sliding sleeve, and when the temperature sensor is pressed by the heating container to enable the sliding sleeve to move downwards to the bottom, the travel switch conducts a power supply of the heating plate to; when the temperature sensor is not pressed by the heating container, the sliding sleeve moves upwards under the action of the compression spring, and the power supply of the heating plate in the base is cut off by the travel switch to realize the power-off of the heating plate.

8. The bottom temperature sensing device of the heating container according to claim 1, 2, 3 or 4, wherein: the heating container is a glass container and comprises a glass cup body and a glass cup bottom integrated with the glass cup body, an upper boss is arranged at the glass cup bottom and used for accommodating a temperature sensor protruding on the surface of the heating plate, and the temperature sensor is in direct contact with the bottom surface of the upper boss.

9. The bottom temperature sensing device of the heating container according to claim 1, 2, 3 or 4, wherein: the heating plate includes aluminium base board and establishes the electric heating pipe that is the spiral setting at aluminium base board lower surface, and aluminium base board upper surface laminates with the heating container bottom surface mutually, perhaps the heating plate includes die-casting aluminum plate and establishes the electric heating pipe that is the spiral setting at die-casting aluminum plate lower surface, and surface spraying teflon behind the die-casting aluminum plate shaping, die-casting aluminum plate upper surface laminate mutually with glass heating container bottom surface.

10. The bottom temperature sensing device of the heating container according to claim 1, 2, 3 or 4, wherein: the flatness tolerance of the surface of the heating plate, which is jointed with the bottom surface of the heating container, is 0.03-0.20 mm.

Images