CN215295429U

CN215295429U - Device capable of autonomously sensing temperature and intelligently adjusting cold and hot

Info

Publication number: CN215295429U
Application number: CN202120299096.1U
Authority: CN
Inventors: 黄秦熠; 李景文; 姜建武; 张维裕; 莫良宏
Original assignee: Guilin University of Technology
Current assignee: Guilin University of Technology
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2021-12-24
Anticipated expiration: 2031-02-02

Abstract

The utility model relates to a device for autonomously sensing temperature and intelligently adjusting cold and heat, which comprises a shell, a tray, a cold and heat block and a singlechip; the tray is fixed on the upper part in the shell; the cold and hot block is fixed in the shell and corresponds to the position below the tray, the upper side and the lower side of the cold and hot block are in a refrigerating state or a heating state after being electrified, and the refrigerating state or the heating state of the upper side and the lower side of the cold and hot block is changed into the refrigerating state or the heating state after the current direction is changed; a power supply circuit for supplying electric energy to the cold and hot blocks through an external power supply is arranged in the shell, and the single chip microcomputer is arranged in the shell, electrically connected with the power supply circuit and used for controlling the current direction and the current magnitude of the power supply circuit. The device not only can realize cold/heat in the all-in-one machine, breaks through the single functionality that the same cold and hot block electronic products in the market can only heat/refrigerate aiming at liquid, but also does not need to use a refrigerant for heating/refrigeration, and does not pollute the environment.

Description

Device capable of autonomously sensing temperature and intelligently adjusting cold and hot

Technical Field

The utility model relates to an utilize semiconductor material's Peltier effect technical field, concretely relates to autonomic perception temperature and cold and hot device of intelligent regulation.

Background

The semiconductor refrigerating material is a novel material, is specially used for cooling or heating a certain object, and has the advantages of capability of thermoelectric refrigeration, no other moving parts, no noise during working, long service life, high reliability and small volume of working parts. Portable heating/refrigeration electrical appliances circulating in the market at present are various in types and different in functions, but have the defects that the heat preservation effect is poor, the container capacity is small, the heating or refrigeration functions cannot be unified on the same electrical appliance, the heating/refrigeration agent adopts liquid, the heating/refrigeration types are limited quite a lot, the working efficiency is low, intelligent treatment cannot be carried out and the like. The combination of various market feedbacks can clearly see that, nowadays, the unilateral electric appliance for heat preservation or liquid beverage limitation for heating/refrigeration cannot meet the increasing material living demands of people.

SUMMERY OF THE UTILITY MODEL

To sum up, the utility model aims to solve the technical problem that an autonomic perception temperature and cold and hot device of intelligent regulation is provided, thereby it changes the cold and hot side of the cold and hot piece of semiconductor in order to reach the function of heating and refrigeration integration through the direction of change current, and aim at overcomes the defect and not enough of cold and hot electric appliance on the market now, satisfies the market user and to the higher just needs of intelligence cold and hot electric appliance.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a device for autonomously sensing temperature and intelligently adjusting cold and heat comprises a shell, a tray, a cold and heat block and a single chip microcomputer; the tray is fixed on the upper part in the shell; the cold and hot block is fixed in the shell and corresponds to the position below the tray, the upper side and the lower side of the cold and hot block are respectively in a refrigerating state or a heating state after being electrified, and the refrigerating state and the heating state of the upper side and the lower side of the cold and hot block are changed into the heating state and the heating state after the current direction is changed; the single chip microcomputer is arranged in the shell and electrically connected with the power supply circuit and used for controlling the current direction and the current magnitude of the power supply circuit.

The utility model has the advantages that: the cold/heat integration can be realized in the integrated machine, the loading container in the cabin body can heat and refrigerate liquid, medicines, foods and the like, the single functionality that the same cold and hot block electronic products on the market can only heat/refrigerate liquid is broken through, a refrigerant is not needed for heating/refrigerating, the risk of refrigerant chemical substance leakage is avoided, and the environment is not polluted in the working process.

On the basis of the technical scheme, the utility model discloses can also do as follows the improvement:

further, the cold and hot block comprises a first ceramic piece, a second ceramic piece, a plurality of metal conductors and a plurality of connecting strips; the first ceramic plate and the second ceramic plate are arranged oppositely up and down; the metal conductors are divided into two parts, the first part of metal conductors are arranged on the lower side of the first ceramic plate at intervals, the second part of metal conductors are arranged on the upper side of the second ceramic plate at intervals, and the second part of metal conductors and the first part of metal conductors are arranged in a vertically staggered mode; the upper end of each connecting strip is connected with the end of the corresponding metal conductor in the first part of metal conductors, and the lower end of each connecting strip is connected with the end of the corresponding metal conductor in the second part of metal conductors.

The beneficial effect of adopting the further technical scheme is as follows: when direct current passes through a couple formed by connecting two different semiconductor materials in series, heat can be absorbed and released at two ends of the couple, namely the upper side and the lower side of the cold and hot blocks respectively, so that the aim of refrigeration/heating is fulfilled.

Further, the heat dissipation device also comprises a heat conduction sheet, a fixing plate, a tray seat, a heat dissipation clapboard and a heat dissipation aluminum sheet; the heat transfer conducting sheet and the fixing plate are respectively arranged above the cold and hot block from top to bottom, and the tray is fixed at the top of the heat transfer conducting sheet; the tray seat, the heat dissipation partition plate and the heat dissipation aluminum sheet are sequentially arranged below the cold and hot block from top to bottom.

The beneficial effect of adopting the further technical scheme is as follows: the heat dissipation and heat transfer effects are ensured.

Furthermore, silicone grease is uniformly coated on the heat conduction sheet.

The beneficial effect of adopting the further technical scheme is as follows: better transfer heat energy into the upper tray.

Further, a gasket is arranged between the cold and hot block and the tray seat.

Further, the shell comprises a shell, an intermediate shell and a liner; the middle shell is positioned inside the outer shell, and the inner container is positioned inside the middle shell; the tray is fixed at the upper part in the inner container, and the cold and hot block is fixed in the inner container and corresponds to the position below the tray; the power supply circuit and the single chip microcomputer are arranged in the inner container.

The beneficial effect of adopting the further technical scheme is as follows: the temperature in the bin and the outside have good isolation effect, and the heating/refrigerating efficiency is ensured not to generate too large influence due to the outside temperature.

Further, a vacuum cavity is formed between the outer side wall of the middle shell and the inner side wall of the shell.

Furthermore, a packing layer is formed between the outer side wall of the inner container and the inner side wall of the middle shell, and polystyrene foam is filled in the packing layer.

Furthermore, a sensor for monitoring the temperature in the inner container is arranged in the packing layer, and a display which is connected with the sensor and displays the temperature monitored by the sensor is arranged on the outer side wall of the shell.

The beneficial effect of adopting the further technical scheme is as follows: and acquiring the temperature in the bin in real time.

Further, a button for adjusting the current direction or the current magnitude of the power supply circuit through the single chip microcomputer is arranged on the outer side wall of the shell.

The beneficial effect of adopting the further technical scheme is as follows: the current direction or the current magnitude of the power supply line is adjusted and adjusted manually.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a three-dimensional view of the present invention with the outer shell removed;

FIG. 3 is an exploded view of FIG. 2;

fig. 4 is a schematic diagram of the structure of the cooling and heating block (upper cooling and lower heating).

In the drawings, the components represented by the respective reference numerals are listed below:

1. the heat dissipation device comprises a shell, 2, a tray, 3, a cold and hot block, 4, a first ceramic piece, 5, a second ceramic piece, 6, a metal conductor, 7, a connecting strip, 8, a temperature conduction piece, 9, a fixing plate, 10, a tray seat, 11, a heat dissipation partition plate, 12, a heat dissipation aluminum piece, 13, a gasket, 14, a display, 15 and a button.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1-3, a device for autonomously sensing temperature and intelligently adjusting cold and heat comprises a shell 1, a tray 2, a cold and heat block 3 and a single chip microcomputer. The tray 2 is fixed to an upper portion inside the housing 1. The cold and hot block 3 is fixed in the shell 1 and corresponds to the position below the tray 2, the upper side and the lower side of the cold and hot block 3 are respectively in a refrigerating state or a heating state after being electrified, and the refrigerating state and the heating state of the upper side and the lower side of the cold and hot block 3 are changed into the heating state and the refrigerating state after the current direction is changed. The power supply circuit is characterized in that a power supply circuit for supplying electric energy to the cold and hot block 3 through an external power supply is arranged in the shell 1, and the single chip microcomputer is arranged in the shell 1 and electrically connected with the power supply circuit and used for controlling the current direction and the current magnitude of the power supply circuit. And a button 15 for adjusting the current direction or the current magnitude of the power supply circuit through the single chip microcomputer is arranged on the outer side wall of the shell 1.

The device also comprises a temperature conduction conducting sheet 8, a fixing plate 9, a tray seat 10, a heat dissipation partition plate 11 and a heat dissipation aluminum sheet 12. The heat conduction conducting sheet 8 and the fixing plate 9 are respectively arranged above the cold and hot block 3 from top to bottom, the tray 2 is fixed on the top of the heat conduction conducting sheet 8, and silicone grease is uniformly coated on the heat conduction conducting sheet 8. The tray seat 10, the heat dissipation partition 11 and the heat dissipation aluminum sheet 12 are sequentially arranged below the cold and hot block 3 from top to bottom. A gasket 13 is arranged between the cold and hot block 3 and the tray seat 10. The heat conduction sheet 8, the fixing plate 9, the tray seat 10, the heat dissipation partition plate 11 and the heat dissipation aluminum sheet 12 have the following functions:

cooling an aluminum sheet 12: the intensive aluminum sheet at the bottom layer is the heat dissipation aluminum sheet 12, so that the heat generated by the cold and hot block 3 in the working process can obtain a good heat dissipation environment at the first time, and the normal operation of the cold and hot block 3 is ensured. The metal aluminum has good heat dissipation performance, is portable to carry and reasonable in cost, and the aluminum plate blocks which are divided into multiple pieces are densely arranged, so that the occupied space volume is reduced, and the good heat dissipation efficiency of the lower heat dissipation layer is greatly improved.

② heat dissipation partition plate 11: used for connecting and fixing the lower end radiating aluminum sheet 12 and the upper end tray seat 10. The structural stability of the radiating aluminum sheets 12 is ensured, more contact area between the lower radiating aluminum sheets 12 and the tray seat 10 for receiving the cold and hot blocks 3 is provided, and light metal aluminum is also adopted as a structural material.

Third, the tray seat 10: the lower end radiating layer part is connected and is used for bearing the placement of the upper part cold and hot block 3, the heat conducting sheet 8 and the heated/refrigerated object, which is an important bearing end and adopts a large-area square aluminum sheet material. The handle parts at the two ends are convenient for a user to take and transfer the device, and are also (important fixing parts of) the polystyrene cabin cover outside the upper layer of the device.

Fourthly, the cold and hot block 3: the core part of the product is a core working device for heating/cooling the product. The working cold and hot sides are changed by changing the current direction, so that the heating and refrigerating integrated characteristic and product characteristic advantages of the device are realized.

Fixing a plate 9: the tray seat is used for fixing the positions of the cold and hot block 3 and the tray seat 10, ensuring that the cold and hot block 3 cannot easily shift and change positions in the product carrying and moving process, and simultaneously connecting the upper heat transfer conducting sheet 8 to increase the contact area between the cold and hot block 3 and the upper heat transfer conducting sheet 8.

Sixthly, a temperature-conducting guide sheet 8: the temperature of the cold and hot block 3 is better conducted to the heated/refrigerated goods on the upper layer, the heating/refrigerating working efficiency is accelerated, and the user can meet the requirement on reaching the temperature of the user in a shorter time.

The temperature control is matched with the singlechip control module: the core control module of the whole temperature control system outputs a certain control signal to act on the driving execution module to control the running state of the refrigerator by receiving the temperature value transmitted by the temperature sensor and carrying out sectional PID algorithm comparison analysis with the set target temperature. The cost is considered while meeting the basic control requirements of the system. In the design realization of the hardware circuit of the system, a modularized decomposition design method is adopted, and the control circuit adopts the main functions of an 80C51 singlechip:

1. cold and heat conversion can be realized by inputting the key module into the 51 single chip microcomputer through a p3 interface and realizing the on-off of a cold and heat switch through an XPT2046D/A converter.

2. The key temperature control can be input into the 51 single chip microcomputer through a p3 interface by a key module, and the 51 single chip microcomputer can output a specific voltage value after D/A conversion through c language programming, so that the heating resistor or the cold and hot block 3 works at the specific voltage value.

3. And (3) real-time temperature monitoring, wherein a reading program stored in the 51 single chip microcomputer can be used for transmitting the temperature data measured by the DS18B20 back to the 51 single chip microcomputer, the 51 single chip microcomputer processes the data and the 74HC245, the processed signals are transmitted through a p1 interface, and the delayed dynamic display is realized on the digital display tube LCD 1602.

The shell 1 comprises a shell, a middle shell and an inner container. The middle shell is positioned inside the shell, and the inner container is positioned inside the middle shell. The tray 2 is fixed on the upper part of the inner container, and the cold and hot block 3 is fixed in the inner container and corresponds to the position below the tray 2. The power supply circuit and the single chip microcomputer are arranged in the inner container. And a vacuum cavity is formed between the outer side wall of the middle shell and the inner side wall of the shell. And a packing layer is formed between the outer side wall of the inner container and the inner side wall of the middle shell, and polystyrene foam is filled in the packing layer. A sensor for monitoring the temperature in the inner container is arranged in the packing layer, and a display 14 which is connected with the sensor and displays the temperature monitored by the sensor is arranged on the outer side wall of the shell.

In order to ensure that the temperature in the inner container cabin cannot be communicated with the outside to cause loss, the shell 1 adopts a three-layer cabin comprising a shell, a middle shell and an inner container. The middle shell is arranged inside the shell, the inner container is arranged inside the middle shell, the vacuum layer is arranged between the shell and the middle shell, the packing layer is arranged between the middle shell and the inner container, and polystyrene foam is filled in the packing layer to prevent temperature loss. The display is arranged on the outer side surface of the shell and is provided with a battery panel. The sensor is arranged in the filler layer and is electrically connected with the display, and the sensor can be a temperature sensor with the model number of DS18B 20.

The device utilizes cold and hot piece 3 can heat refrigerated characteristic simultaneously, collocation intelligence cooling system, passes temperature structure and singlechip circuit control principle, realizes cold and hot system, accurate accuse temperature, duration operating time simultaneously, relies on the dense slice formula base aluminum sheet heat radiation structure that the product was carefully designed, and the built-in circuit protection shield of collocation product, the uninterrupted duty of no pressure can be taken all to the product under the condition of connecting. The in-box tray inside allows the user more freedom in selecting the items to be placed, and can be placed in the compartment for heating/cooling as long as the size of the tray is matched. The function of the device is basically attached to the demand feedback of market users to the intelligent thermoelectric device, the shell 1 of the device adopts three layers of shells, a middle shell and an inner container, the polystyrene foam as the filling material enables the temperature in the bin to have a good isolation effect with the outside, and the heating/refrigerating efficiency is guaranteed not to generate too large influence due to the outside temperature. The built-in box-shaped tray realizes the heating/refrigeration of solid and liquid objects and the design of the isolation bin cover ensures the working environment and the working efficiency in the interior.

As shown in fig. 4, the cold-hot block 3 includes a first ceramic plate 4, a second ceramic plate 5, a plurality of metal conductors 6, and a plurality of connecting bars 7. The first ceramic plate 4 and the second ceramic plate 5 are arranged up and down oppositely. The metal conductor 6 is divided into two parts, the first part of metal conductor is arranged at the lower side of the first ceramic plate 4 at intervals, the second part of metal conductor is arranged at the upper side of the second ceramic plate 5 at intervals, and the second part of metal conductor and the first part of metal conductor are arranged in a vertically staggered mode. The upper end of each connecting strip 7 is connected to the end of the corresponding metal conductor 6 in the first metal conductor part, and the lower end thereof is connected to the end of the corresponding metal conductor 6 in the second metal conductor part.

The working principle of the device is as follows: the semiconductor cold and hot block 3 is based on the principle that the electron level transition theory is involved, the semiconductor cold and hot block 3 is composed of an N-type semiconductor material and a P-type semiconductor material, donor impurities are doped in a semiconductor by the N-type semiconductor material, and redundant electrons generate negative temperature difference potential; the P-type material is a positive temperature difference potential in which acceptor impurities are doped in a semiconductor and a large number of holes are generated due to insufficient electrons.

The first step is as follows: when direct current flows from the N-type material to the P-type material through the metal conductor, namely electrons flow from the low energy level (P-type) to the high energy level (N-type) to generate energy level transition, the electrons absorb external energy to complete the transition, and therefore the direct current becomes the cooling side of the semiconductor cold and hot block 3.

The second step is that: current flows from the P-type material to the N-type material on the other side of the semiconductor cold and hot block 3, the microscopic energy level transition phenomenon is opposite to that of the cold side, energy is released outwards to form a heat release end, and the N-type material is doped with donor impurities in the semiconductor and has redundant electrons to generate negative temperature difference potential.

The third step: the P-type material is a positive temperature difference potential because acceptor impurities are doped in a semiconductor and a large number of holes are generated due to insufficient factors.

The fourth step: when direct current flows from an N-type material to a P-type material through a metal conductor, namely electrons flow from a low energy level (P-type) to a high energy level (N-type) to generate energy level transition, the electrons absorb external energy to complete the transition, and therefore the direct current becomes a refrigerating side. And current flows from the P-type material to the N-type material on the other side, the microscopic energy level transition phenomenon is opposite to that of the cooling end, and energy is released outwards to form a heat release end.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A device capable of autonomously sensing temperature and intelligently adjusting cold and heat is characterized by comprising a shell (1), a tray (2), a cold and heat block (3) and a single chip microcomputer; the tray (2) is fixed at the upper part in the shell (1); the cold and hot block (3) is fixed in the shell (1) and corresponds to the position below the tray (2), the upper side and the lower side of the cold and hot block (3) are respectively in a refrigerating state or a heating state after being electrified, and the refrigerating state and the heating state of the upper side and the lower side of the cold and hot block (3) are changed into the heating state and the heating state after the current direction is changed; the intelligent control device is characterized in that a power supply circuit for supplying electric energy to the cold and hot block (3) through an external power supply is arranged in the shell (1), and the single chip microcomputer is arranged in the shell (1) and electrically connected with the power supply circuit and used for controlling the current direction and the current magnitude of the power supply circuit.

2. The device for autonomously sensing temperature and intelligently adjusting cold and heat according to claim 1, wherein the cold and heat block (3) comprises a first ceramic plate (4), a second ceramic plate (5), a plurality of metal conductors (6) and a plurality of connecting bars (7); the first ceramic piece (4) and the second ceramic piece (5) are arranged oppositely up and down; the metal conductor (6) is divided into two parts, the first part of metal conductor is arranged at the lower side of the first ceramic plate (4) at intervals, the second part of metal conductor is arranged at the upper side of the second ceramic plate (5) at intervals, and the second part of metal conductor and the first part of metal conductor are arranged in a vertically staggered mode; the upper end of each connecting strip (7) is connected with the end of the corresponding metal conductor (6) in the first part of metal conductors, and the lower end of each connecting strip is connected with the end of the corresponding metal conductor (6) in the second part of metal conductors.

3. The device for autonomously sensing temperature and intelligently adjusting cold and heat according to claim 1, further comprising a heat conducting sheet (8), a fixing plate (9), a tray seat (10), a heat dissipation partition plate (11) and a heat dissipation aluminum sheet (12); the heat transfer guide sheet (8) and the fixing plate (9) are respectively arranged above the cold and hot block (3) from top to bottom, and the tray (2) is fixed at the top of the heat transfer guide sheet (8); the tray seat (10), the heat dissipation partition plate (11) and the heat dissipation aluminum sheet (12) are sequentially arranged below the cold and hot block (3) from top to bottom.

4. The device for sensing temperature autonomously and adjusting cold and hot according to claim 3, wherein the heat conducting sheet (8) is coated with silicone grease.

5. Device for sensing temperature autonomously and regulating cold and hot intelligently according to claim 3, characterized in that a gasket (13) is arranged between the cold and hot block (3) and the tray seat (10).

6. The device for autonomously sensing temperature and intelligently adjusting cold and heat according to claim 1, wherein said case (1) comprises an outer case, an intermediate case and an inner container; the middle shell is positioned inside the outer shell, and the inner container is positioned inside the middle shell; the tray (2) is fixed at the upper part in the inner container, and the cold and hot block (3) is fixed in the inner container and corresponds to the position below the tray (2); the power supply circuit and the single chip microcomputer are arranged in the inner container.

7. The device for autonomously sensing temperature and intelligently regulating cold and heat according to claim 6, wherein a vacuum cavity is formed between the outer side wall of the middle shell and the inner side wall of the outer shell.

8. The device for autonomously sensing temperature and intelligently adjusting cold and heat according to claim 6, wherein a packing layer is formed between the outer side wall of the inner container and the inner side wall of the middle shell, and polystyrene foam is filled in the packing layer.

9. The device for autonomously sensing temperature and intelligently adjusting cold and heat according to claim 8, wherein a sensor for monitoring the temperature in the inner container is arranged in the packing layer, and a display (14) which is connected with the sensor and displays the temperature monitored by the sensor is arranged on the outer side wall of the shell.

10. The device for autonomously sensing temperature and intelligently adjusting cold and heat according to any one of claims 1 to 9, wherein a button (15) for adjusting the current direction or the current magnitude of the power supply line through the single chip microcomputer is arranged on the outer side wall of the shell (1).