CN1981682A - Fast step-down electric pressure cooker - Google Patents

Abstract

The invention discloses an electric pressure cooker with rapid pressure reduction, which comprises a shell, a base, a heating plate, an outer pot, an inner pot, and a fan and an air-cooling passage; the fan is located at the bottom of the outer pot, and the air-cooling passage is located at the inner pot, Between the outer pots or between the outer pots and the shell. The structural improvement of the invention is very small, and the pressure in the electric pressure cooker is rapidly reduced by means of air cooling, so that the user can enjoy the food in the cooker more quickly. After testing, an electric pressure cooker with a fan with a power of 2 watts can be opened for about 10 minutes. Compared with ordinary electric pressure cookers, the present invention can save 20 to 30 minutes of time.

Description

Quick Step-Down Electric Pressure Cooker

technical field

The invention relates to a pressure cooker, in particular to an electric pressure cooker.

Background technique

No matter what kind of heating method is used in the existing electric pressure cooker, there will be an automatic heat preservation process after the cooking is completed. The holding time is determined by the heat dissipation conditions of the electric pressure cooker, and the holding time is generally longer. Users generally hope that the pressure in the pot can be reduced as soon as possible after cooking, so that they can turn on the electric pressure cooker to enjoy the food in the pot.

The existing electric pressure cooker with rapid pressure reduction can refer to the Chinese utility model patent adjustable pressure automatic electric pressure cooker (the authorized announcement number is CN 2448235Y), which discloses an adjustable pressure automatic pressure cooker, which includes a shell, a middle layer, and an inner pot , outer cover, inner cover, pressure regulating valve, overpressure valve, heating plate and pot cover locking mechanism, a middle layer is set in the shell, the heating plate is installed on the bottom of the middle layer, the inner pot is placed in the middle layer, the bottom and the heating The disc is in contact, the inner cover is connected with the outer cover, and a pressure regulating valve is installed on it, and a bracket is installed between the bottom of the middle layer and the outer shell; a drainage ring is set between the upper edge of the middle layer and the outer shell, and a through hole is opened on the outer cover ; Overpressure valve is installed on the inner cover. The weak point of above-mentioned prior art is: complicated structure.

Contents of the invention

The technical problem to be solved by the present invention is to propose an electric pressure cooker with a simple structure and rapid pressure reduction.

The technical scheme of the present invention is summarized as follows: an electric pressure cooker for rapid depressurization, comprising a casing, a base, a heating plate, an outer pot, an inner pot, and a fan and an air-cooling passage; the fan is located in the air-cooling passage; the air-cooling The passage is located between the inner pot and the outer pot or between the outer pot and the outer shell.

Wherein, the air-cooling passage includes an air inlet, a heat dissipation air duct, an exhaust air duct, an air outlet, and an air vent; the air inlet and the air outlet are located on the base, the heat dissipation air duct is located between the inner pot and the outer pot, and the exhaust air The duct is located between the outer pot and the shell, and the vent is located on the top of the outer pot, connecting the heat dissipation air duct and the exhaust air duct.

The electric pressure cooker also includes a controller, which is used to control the fan to be turned on or off.

The electric pressure cooker also includes a circuit board, which provides power for the fan.

The circuit board is provided with a single-chip microcomputer, which is used to set the time for the fan to be turned on or off.

There is at least one fan, and each fan is located at the bottom of the outer pot.

The air-cooling passage also includes an air hole; the air hole is located at the bottom of the outer pot and corresponds to the position of the fan.

The fan is located on the side of the outer pot or on the pot cover.

Compared with the prior art, the effect of the present invention is as follows: an electric pressure cooker with rapid depressurization, including a shell, a base, a heating plate, an outer pot, an inner pot, and a fan and an air-cooling passage; the fan is located in the outer pot At the bottom, the air cooling passage is located between the inner pot and the outer pot or between the outer pot and the outer shell. The structural improvement of the invention is very small, and the pressure in the electric pressure cooker is rapidly reduced by means of air cooling, so that the user can enjoy the food in the cooker more quickly.

After testing, an electric pressure cooker with a fan with a power of 2 watts can be opened for about 10 minutes. Compared with ordinary electric pressure cookers, the present invention can save 20 to 30 minutes of time.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a temperature curve diagram of the automatic porridge cooking program of the existing electric pressure cooker.

Fig. 3 is the temperature curve diagram of the porridge automatic program that adopts the electric pressure cooker of the present invention.

In the figure 1. Pot cover, 2. Shell, 3. Inner pot, 4. Cooling air duct, 5. Outer pot, 6. Heating plate, 7. Exhaust air duct, 8. Air inlet, 9. Fan, 10. Base, 11. air outlet, 12. air vent, 13. air hole.

Detailed ways

The present invention will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings.

As shown in Figure 1, an electric pressure cooker with rapid pressure reduction includes a pot cover 1, a shell 2, a base 10, a heating plate 6, an outer pot 5, an inner pot 3, a controller, a circuit board, a fan 9, an air inlet 8, Heat dissipation air duct 4, exhaust air duct 7, air outlet 11, air vent 12, air hole 13.

The heating plate 6 top contacts with the bottom of inner pot 3, and the bottom frame of heating plate 6 is fixed on the outer pot 5, and there is a certain space between it and the outer pot 5. Fan 9 is fixed on the bottom of the outer pot, and the position corresponding to the fan 9 is provided with an air hole 13 at the bottom of the outer pot 5. The fan 9 is controlled on or off by the controller, and the power supply of the fan 9 is provided by the circuit board. The air inlet 8 and the air outlet 11 are located on the base, wherein the air inlet 8 is located below the fan. The heat dissipation air duct 4 is located between the inner pot and the outer pot, and the exhaust air duct is located between the outer pot and the outer shell. The air vent 12 is located at the top of the outer pot, and connects the cooling air duct 4 and the exhaust air duct. The controller can be fixed on the shell, and the main circuit board can be fixed on the base.

The working principle of the above-mentioned electric pressure cooker with rapid decompression is as follows:

When the pressure needs to be lowered, the controller starts the fan 9. The cold wind is sucked in from the air inlet 8 by the fan 9, blows on the heating plate through the air hole 13, takes away the heat on the heating plate and the inner pot, and passes through the heat dissipation air duct 4, the air vent 12, the exhaust air duct, and the outlet. The air vent discharges the electric pressure cooker. The fan makes the air flow quickly between the outer pot and the inner pot, and takes away a lot of heat, so that the temperature of the outer surface of the inner pot drops, thereby reducing the pressure inside the inner pot. After the pressure in the pot drops to an appropriate value, the fan 9 can be closed. The user can just open the lid and enjoy the food in the pot.

For speeding up the step-down, a plurality of (more than 1) fans 9 can be installed, and air holes 13 are respectively set at the positions corresponding to the fans 9 at the bottom of the outer pot.

For the convenience of the user, the opening and closing time of the above-mentioned fan can be pre-set in the single-chip microcomputer on the circuit board.

The above-mentioned fan can also be located on the side of the outer pot or on the pot cover.

As shown in Figure 2, the abscissa represents time, and the ordinate represents the temperature in the pot. After the electric pressure cooker is powered on, the temperature in the pot starts to rise, and the rising speed will slow down after the temperature in the pot reaches 100 degrees, and the set pressure is reached after reaching 120 degrees, the heating is stopped, and the power supply of the heating plate is cut off. On the one hand, because the temperature in the pot is greater than 100 degrees, the food in the pot continues to be cooked; on the other hand, due to heat loss, the temperature in the pot begins to drop slowly, and the pressure also drops slowly. When point C is reached, the temperature is 100 degrees, and the pressure is basically zero. However, due to the good heat insulation of the existing electric pressure cooker, the heat loss in the pot is very slow, so it takes a long time for the pressure in the pot to drop to zero. It doesn't take such a long time to cook.

As shown in Figure 3, the abscissa represents time, and the ordinate represents the temperature in the pot. The difference from Figure 2 is that: start the fan at point D and start forced cooling, which can not only ensure that the food is fully cooked, but also make the temperature quickly reach 100 degrees, and you can open the cover to enjoy, saving a lot of time . After testing, an electric pressure cooker with a fan with a power of 2 watts can be opened for about 10 minutes. Compared with common electric pressure cookers, the present invention can save 20 to 30 minutes of time, and the power consumption thereof is negligible.

Claims (8)

1. An electric pressure cooker for rapid decompression, comprising a shell, a base, a heating plate, an outer pot, and an inner pot, characterized in that: a fan and an air-cooling passage are also included; the fan is located in the air-cooling passage; the air-cooling passage is located in the air-cooling passage Between the inner pot and the outer pot and between the outer pot and the outer shell. 2. The electric pressure cooker as claimed in claim 1, wherein the air-cooling passage includes an air inlet, a heat dissipation air duct, an exhaust air duct, an air outlet, and an air vent; the air inlet and the air outlet are located on the base to dissipate heat. The air duct is located between the inner pot and the outer pot, the exhaust air duct is located between the outer pot and the outer shell, and the vent is located on the top of the outer pot to connect the heat dissipation air duct and the exhaust air duct. 3. The electric pressure cooker according to claim 1 or 2, further comprising a controller for controlling the fan to be turned on or off. 4. The electric pressure cooker according to claim 1 or 2, further comprising a circuit board, the circuit board provides power for the fan. 5. The electric pressure cooker according to claim 4, characterized in that: said circuit board is provided with a single-chip microcomputer for setting the time when the fan is turned on or off. 6. The electric pressure cooker according to claim 1 or 2, characterized in that there is at least one fan, and each fan is located at the bottom of the outer pot. 7. The electric pressure cooker according to claim 6, characterized in that: the air-cooling passage further includes an air hole; the air hole is located at the bottom of the outer pot and corresponds to the position of the fan. 8. The electric pressure cooker according to claim 1 or 2, characterized in that the fan is located on the side of the outer pot or on the pot cover.