CN1565324A - Electric cooker cooler - Google Patents

Abstract

The invention discloses a cooling device for an electric rice cooker. The electric rice cooker cooling device comprises a shell, a control printed circuit board, a cooling device, a cooling fan and a supporting device. Wherein, a rice cooker can be placed inside the casing, and a suction port and a discharge port are formed on the bottom surface of the casing. The control printed circuit board is located inside the housing on the rear side. The heat dissipation device is installed on the heating element of the control printed circuit board. The cooling fan is located at a position spaced apart from the lower end of the cooling device in the horizontal direction. The cooling fan is installed on the side of the suction port of the housing to suck in air. The support device supporting the rice cooker has a concave tripod structure, and one foot is a diversion foot, which can guide the air circulated by the cooling fan in a concentrated manner. The invention makes the wiring operation between the display part and the control printed circuit board easier, reduces the overall height of the electric rice cooker, and can improve the cooling efficiency of the heat source at the same time. The overall structure is simplified, which makes the assembly and production of products easier.

Description

Cooling device for rice cooker

technical field

The invention relates to an invention of an electric rice cooker. Furthermore, it relates to a cooling device for an electric rice cooker that reduces the overall height of the electric rice cooker and improves heat dissipation performance by improving the air circulation structure inside the electric rice cooker.

Background technique

Usually, electric cooker is a kind of household appliance that cooks with electric energy as heating source. It can maintain the high-pressure state in the rice cooker, making the heating temperature higher than that under normal air pressure. Thereby, cooking work can be completed rapidly.

As shown in FIG. 1 , the electric rice cooker includes a main body 1 on which a rice cooker 4 is installed and a cover assembly 2 . Wherein, the cover assembly 2 is connected to the main body 1 through the hinge part 3 , and the main body 1 can be opened and closed with the rotation of the hinge part 3 .

An electric heating device 5 is arranged inside the main body 1 to heat the rice cooker 4 . Electric heating device 5 is made up of working coil, heat preservation electric heating plate, inner bag 5a. When cooking, the working coil generates an induced current. While keeping warm, the electric heating plate for keeping warm produces less heat. The rice cooker is placed in the inner container 5a.

In the electric rice cooker with the above structure, the rice cooker 4 is heated by the working coil 5 to perform cooking operations. When carrying out cooking operations, the inner part of the cover assembly 2 is tightly combined with the upper end of the rice cooker 4, and the discharge valve will remain closed. Thereby, when the water inside boils, because steam is produced, the pressure inside rice cooker 4 can be higher than normal air pressure.

In addition, as the pressure becomes higher, the boiling point of water will be higher than the boiling point (100 degrees) at normal atmospheric pressure. Therefore, the rice will be steamed quickly. After the cooking operation is finished, stop the heating of the electric heating device 5, and maintain the pressure in the rice cooker 4 under the original pressure within a certain period of time, and carry out stuffy rice operation. Afterwards, the steam discharge valve starts, and the steam in the rice cooker 4 is discharged outwards to reduce the pressure. Then, utilize the electric heating device 5 to keep the temperature of the rice cooker 4 at a certain temperature.

The front of the main body 1 is provided with a display window 6 for displaying the operating status of the electric rice cooker and the like. A display printed circuit board 10 and a control printed circuit board 11 are mounted on its inner side. Among them, the display printed circuit board 10 includes components such as a display panel. The control printed circuit board 11 is installed near the display printed circuit board 10 to control the actions of the display printed circuit board 10 and the electric heating device 5 . The control printed circuit board 11 includes elements 11a for heat generation, such as semiconductor elements that generate high temperature during operation. In order to cool the heating element 11a, a heat sink 15 is mounted on the heating element 11a.

The bottom surface of the main body 1 is provided with a cooling fan 13 . The cooling fan 13 protects the control printed circuit board 11 from the high temperature generated by the electric heating device 5 .

As the cooling fan 13 works, air flows in from the outside of the main body 1 to the inside. After the air cools the heating elements 11a and the like of the control printed circuit board 11, it circulates inside the main body 1 and is discharged to the outside.

Under the conventional technology, the above-mentioned electric rice cooker has the following problems. When the cover body 2 is equipped with a display part, the control printed circuit board 11 is provided in the front surface of a main body. Therefore, the wires connecting the display printed circuit board and the control printed circuit board are connected to the display printed circuit board, bypassing the rear side of the main body 1 and the hinge portion 3 . Therefore, the length of the electric wire becomes long, and problems such as difficulty in internal wiring work are caused.

The heating element 11a is the main heat source of the electric rice cooker. In order to sufficiently cool the heating element 11a, it is necessary to provide the heat sink 15 with a large area. Moreover, in order to concentrate the air flowing in through the cooling fan 13 on one side of the cooling device, the cooling fan 13 will be installed at the bottom of the cooling device 15 . However, when the cooling fan 13 is installed at the bottom of the cooling device 15, a certain interval in the up-down direction should be formed between the cooling fan 13 and the cooling device 15, and they each occupy a certain space. Therefore, there is a problem that the overall height of the rice cooker becomes high.

In addition, when the heat dissipation fan 13 is not located at the bottom of the heat dissipation device 15, the air flowing in by the heat dissipation fan 13 cannot be concentrated on one side of the heat dissipation device 15 because there is no additional device. Therefore, the heat generating source cannot be sufficiently cooled.

Contents of the invention

The technical problem to be solved by the present invention is to provide a control printed circuit board on the rear side of the main body and a cooling fan in front of the control printed circuit board when the display part is formed on the cover body. In this way, the wiring work between the display unit and the control printed circuit board is made easier, and at the same time, the overall height of the main body of the cooling device of the rice cooker is reduced.

In addition, the present invention forms an air guide structure on the triangular support body supporting the rice cooker, so as to centrally cool and control the heating elements of the printed circuit board. Moreover, the cooling fan is installed in one body on the flow guide structure. Therefore, the cooling efficiency of the heat source is improved, the overall structure is simplified, and the assembly and production of the product is facilitated.

The technical solution adopted in the present invention is: a cooling device for an electric rice cooker, which is provided with a suction port and a discharge port on the bottom surface of the shell where the rice cooker can be placed inside; a control printed circuit board located at the rear side of the shell; The cooling device installed on the heating element of the control printed circuit board; the cooling fan installed on the lower end of the cooling device and separated from it in the horizontal direction by a certain distance in the horizontal direction, and installed on the side of the suction port of the shell; The supporting device which is located inside the shell and supports the rice cooker is composed of.

The cooling device of the electric rice cooker provided by the present invention can also be composed of a shell that includes a bottom surface to form a suction port and a discharge port; a control printed circuit board located at the inner rear side of the shell; a heat dissipation device installed on the heating element of the control printed circuit board; Install the cooling fan on the inside of the suction port of the casing to suck in the outside air; support the rice cooker inside the casing, and guide the air sucked by the cooling fan to the cooling device at the same time.

In the electric rice cooker cooling device provided by the present invention, its support device has a concave tripod structure, which can support the rice cooker, and has a foot with a diversion foot with a diversion structure, which can direct the air circulated by the cooling fan to the rice cooker. Concentrated diversion in side direction.

With the present invention having the above structure, the rice cooker cooling device provided has the following inventive effects. In the case of installing the display portion on the cover, in the present invention, the control printed circuit board is arranged at the rear of the main body, and the cooling fan is arranged at the front side of the control printed circuit board. Therefore, the wiring work between the display unit and the control printed circuit board becomes easier, and at the same time, the overall height of the main body is reduced.

In addition, the present invention forms an air guide structure on the triangular support body supporting the rice cooker, so as to centrally cool and control the heating elements of the printed circuit board. Moreover, the cooling fan is installed in one body on the flow guide structure. Therefore, the cooling efficiency of the heat source is improved, the overall structure is simplified, and the assembly and production of the product is facilitated.

Description of drawings

Fig. 1 is under the traditional technology, the longitudinal section diagram of the internal structure of electric rice cooker.

Fig. 2 is the schematic diagram of longitudinal section of electric rice cooker internal structure of the present invention;

Fig. 3 is a schematic diagram of the bottom surface of the internal structure of the electric rice cooker of the present invention;

Fig. 4 is a schematic plan view of the chassis of the electric rice cooker of the present invention;

Fig. 5 is a structural schematic diagram of the supporting device of the electric rice cooker of the present invention.

The main components in the drawings:

51: Main Body 52: Cover

53: Articulation device 54: Display part

55: Housing 55a: Second discharge port

56: Chassis 56a: Suction port

56b: 1st outlet 60: Inner container

61: Working coil 65: Rice cooker

68: Horizontal support plate 68a: Air circulation hole

70: Support body 71, 72: Support feet

73: Diversion foot 80: Control printed circuit board

81: heating element 83: cooling device

85: cooling fan

Detailed ways

In the following, specific embodiments are given in conjunction with the accompanying drawings, and the present invention is described in detail.

Fig. 2 is a schematic longitudinal section of the internal structure of the electric cooker of the present invention; Fig. 3 is a schematic view of the bottom surface of the internal structure of the electric cooker of the present invention.

As shown in Figure 2, wherein symbol 51 is the main body equipped with rice cooker 65 and electric heating device inside, symbol 52 is combined on the main body 51 by hinge device 53, can open and close the cover body of rice cooker 65 located in the main body 51.

In order for the user to easily confirm the state of the rice cooker, a display portion 54 is provided on the cover body 52 . On the other hand, the display unit 54 includes a display printed circuit board 54 a.

The main body 51 includes a case 55 . The casing 55 forms the appearance of the rice cooker and includes a chassis 56 . The chassis 56 of the casing 55 has a suction port 56a and a first discharge port 56b, and can take in external air and then discharge it. In addition, the rear side of the casing 55 has a second discharge port 55a for discharging air to the outside.

FIG. 4 is a schematic plan view of the rice cooker chassis 56 of the present invention. The suction port 56a is formed at a relatively rear portion of the chassis 56, and the first discharge port 56b is formed at a relatively front portion of the chassis. Of course, in order to prevent foreign matter from entering the housing, it is preferable to provide a filter structure on the suction port 56a and the discharge port 56b.

In order to heat the rice cooker 65 , an electric heating device is provided inside the housing 55 . The electric heating device includes a working coil 61 and an inner tank 60 . The working coil 61 generates an induced current, which can heat the rice cooker 65 . Have the inner bag 60 of container shape, its outside is provided with working coil 61, and rice cooker 65 can be put into inside.

In order to support the inner container 60 of the built-in rice cooker 65, a supporting device is provided inside the outer shell 55. The support device is made up of a transverse support plate 68 and a triangular support body 70 . The horizontal support plate 68 is arranged between the periphery of the inner tank 60 and the inner surface of the shell 55 . The triangular support body 70 is combined on the horizontal support plate 68 through structures such as screws to support the lower part of the inner container 60 .

The horizontal support plate 68 is provided with many air circulation holes 68a, which can allow the air flowing in through the suction port 56a to flow through the upper space of the main body 51 through the circulation holes 68a, and then be discharged through the discharge port 56b.

Inside the casing 55, at a position on the rear side of the liner 60, a control printed circuit board 80 is vertically fixed. The control printed circuit board 80 is connected with components such as the display printed circuit board 54a and the working coil 61, and can control the electric rice cooker. The control printed circuit board 80 is provided with a heating element 81 composed of semiconductor elements and other devices that generate heat during operation. In order to cool the heating element 81 , a heat sink 83 is provided on the heating element 81 .

In order to cool the radiator 83 by air cooling, a radiator fan 85 is provided at a position spaced horizontally from the lower end of the radiator 83 inside the suction port 56a. The cooling fan 85 can forcibly suck in the outside air. Here, the cooling fan 85 is arranged on the triangular support body 70 and fixed integrally therewith.

The cooling fan 85 is located below the inner tank 60 , and the cooling device 83 is located at the rear side of the inner tank 60 .

Next, the supporting body 70 will be described in detail with reference to FIGS. 2 and 3 centering on FIG. 5 .

The supporting body 70 has three legs 71 , 72 , 73 and has a concave triangular structure, which can support the liner 60 . Among them, there is a foot 73 which is a diversion foot 73 . The deflector feet 73 can concentrate the air sucked by the heat dissipation fan 85 on one side of the inner tank 60 , and guide the air in the direction of the heat dissipation device 83 .

That is, the supporting body 70 is composed of two supporting feet 71 , 72 and a flow guiding foot 73 integrally connected with the supporting feet 71 , 72 . Wherein, the supporting feet 71 , 72 support the inner container 60 inside the shell 55 . While the guide feet 73 support the inner container 60 together with the support feet 71 and 72 , they guide the air inhaled by the cooling fan 85 toward the direction of the cooling device 83 .

The ends of the respective legs 71, 72, 73 of the support body 70 are formed with flange portions 70a. The support body 70 is fixed to the horizontal support plate 68 with members such as screws through the flange portion 70a.

The guide foot 73 is composed of a fan joint part 73a and a guide part 73b. The cooling fan 85 is coupled to the quadrangular fan coupling portion 73 a, and is integrated with the guide foot 73 . The air guide portion 73b extends upward from the fan joint portion 73a along the inner container 60 . In addition, the width of the guide foot 73 is relatively wider than the width of the two supporting feet 71 and 72 .

Next, the action of the rice cooker cooling device of the present invention will be described.

Firstly, the cooling fan 85 is integrated with the supporting body 70 , and there is a foot in the supporting body 70 to form a guide foot 73 , which can guide the air sucked by the cooling fan 85 to the side of the cooling device 83 . Thereby, can simplify the setting structure of cooling fan 85, simultaneously, under the situation of not needing to set up air guiding device separately, also can guide air to cooling device 83 side, can improve the control printed circuit board including heating element 81. 80 cooling efficiency.

In addition, the heat dissipation fan 85 is not disposed immediately below the control printed circuit board 80 and the heat dissipation device 83 , but is disposed below the liner 60 . Therefore, without increasing the overall height of the electric rice cooker, the control printed circuit board 80 and the cooling device can have sufficient sizes according to the design conditions.

In the present invention, after the cooling fan 85 is started, as shown in FIG. 2 , the air outside the main body 51 flows into the inside of the casing 55 through the suction port 56 a of the chassis 56 . The air flowing into the housing 55 is guided by the guide feet 73 of the support body 70 after passing through the heat dissipation fan 85, flows to the heat dissipation device 83 and the control printed circuit board 80, and cools the control printed circuit board 80 and the control printed circuit board 80 through heat exchange. Heating element 81.

In this way, part of the air that has completed the cooling function flows out through the second discharge port 55a at the rear of the control printed circuit board 80 . The rest of the air flows to the upper space of the main body 51 through the air circulation hole 68a on the rear side of the cross support plate 68, then passes through the air circulation hole 68a on the front side of the cross support plate 68 again, flows to the lower space of the main body 51, and then passes through the second air circulation hole 68a on the front side of the main body 51. 1 The discharge hole 56a discharges to both sides below the rice cooker.

Claims (16)

1. the cooling device of an electric rice cooker is characterized in that, is by the bottom surface of the shell (55) that can place pot for cooking rice (56) in inside, is provided with suction inlet (56a) and outlet; Be positioned at the control printed circuit board (80) of the inner rear side of shell (55); Heater element (81) in control printed circuit board (80) is gone up the heat abstractor of installing (83); Be positioned at heat abstractor (83) lower end part and with its in the horizontal direction on the position of certain intervals, and be positioned at the heat emission fan (85) of the suction air that suction inlet (56a) side of shell (55) installs; Being positioned at shell (55) bracing or strutting arrangement inner, that support pot for cooking rice (56) constitutes.

2. the cooling device of an electric rice cooker is characterized in that, is by comprising that the bottom surface forms the shell (55) of suction inlet (56a) and outlet; Be positioned at the control printed circuit board (80) of the inner rear side of shell (55); Heater element (81) in control printed circuit board (80) is gone up the heat abstractor of installing (83); In the installed inside of the suction inlet (56a) of shell (55), suck the heat emission fan (85) of extraneous air; The pot for cooking rice of supporting housing inside (56) constitutes the bracing or strutting arrangement of heat emission fan (85) inhaled air to the heat abstractor water conservancy diversion simultaneously.

3. the cooling device of electric rice cooker according to claim 1 and 2 is characterized in that, also is provided with outlet (55a) on the trailing flank of described shell (55).

4. the cooling device of electric rice cooker according to claim 1 and 2 is characterized in that, in the described shell (55), suction inlet (56a) is arranged on the rear side position of bottom surface, and outlet (56b) is arranged on the position, front side of bottom surface.

5. the cooling device of electric rice cooker according to claim 4 is characterized in that, described outlet is arranged on the both sides of shell bottom surface.

6. the cooling device of electric rice cooker according to claim 1 and 2, it is characterized in that, described bracing or strutting arrangement is the supporter (70) by the interior pot for cooking rice of supporting housing (55) (56), and from supporter (70) prolong that the back forms, and water conservancy diversion pin (73) formation of an air that flows to by heat emission fan (85) to heat abstractor (83) direction water conservancy diversion.

7. the cooling device of electric rice cooker according to claim 6 is characterized in that, described supporter (70) has the triangular form structure, and one of them pin forms water conservancy diversion pin (73).

8. the cooling device of electric rice cooker according to claim 6 is characterized in that, goes up fixedly heat emission fan (85) at water conservancy diversion pin (73).

9. the cooling device of electric rice cooker according to claim 1 and 2 is characterized in that, the inboard of described shell (55) is provided with the horizontal support plate (68) that is formed with many openings (68a).

10. the cooling device of electric rice cooker according to claim 9 is characterized in that, described bracing or strutting arrangement is assembled on the horizontal support plate (68).

11. the cooling device of electric rice cooker according to claim 1 and 2, it is characterized in that, the inboard horizontal support plate (68) that is formed with many openings (68a) that is provided with of described shell (55), bracing or strutting arrangement is by the supporter (70) of the interior pot for cooking rice of supporting housing (55) (65), and after prolonging, supporter (70) forms, and water conservancy diversion pin (73) composition of the air that flows to by heat emission fan (85) to heat abstractor direction water conservancy diversion, by suction inlet (56a) inhaled air, flow through heat emission fan (85), water conservancy diversion pin (73), heat abstractor (85), the rear side circulation of air hole (68a) of horizontal support plate (68), flow out through outlet (56b) in the circulation of air hole, front side (68a) of horizontal support plate (68).

12. the cooling device of electric rice cooker according to claim 1 and 2 is characterized in that, described heat emission fan (85) is positioned at the below of pot for cooking rice (65), and heat abstractor (85) is positioned at the rear of pot for cooking rice.

13. the cooling device of an electric rice cooker, it is characterized in that, its bracing or strutting arrangement has recessed tripod structure, can support pot for cooking rice (65), and it is the water conservancy diversion pin (73) that possesses flow-guiding structure that a pin is arranged, can be being concentrated water conservancy diversion by the air of heat emission fan (85) circulation to the side surface direction of pot for cooking rice (65).

14. the cooling device of electric rice cooker according to claim 13 is characterized in that, the end of described each pin of tripod is formed with flange part (70a), can be fixed on the outer bottom of the inner bag (60) of electric rice cooker.

15. the cooling device of electric rice cooker according to claim 13 is characterized in that, goes up heat emission fan (85) is integral with it at described water conservancy diversion pin (73).

16. the cooling device according to claim 13 or 14 or 15 described electric rice cookers is characterized in that, than other pin that do not form flow-guiding structure, its amplitude is wide relatively at described water conservancy diversion pin (73).

Images