KR0136148Y1 - Apparatus for charge of steam in electric pressure rice cooker - Google Patents

Abstract

The present invention insulates the spring returning its operation when the electromagnet coil tube of the solenoid valve is disconnected from the steam discharge passage, so that steam does not come into contact with the spring and is not directly disturbed by foreign matters. Regarding the steam discharge device of the electric pressure cooker capable of preventing in advance, the steam discharge hole (14a) is communicated to the upper through the upper inside of the close contact member 15 installed in the lower end of the movable shaft (14) is formed And a central portion of the steam bellows 17 is attached to an upper side of the vapor discharge hole 14a formed on the circumference of the movable shaft 14, and an outer angle of the bellows 17 is fixed to the lower surface of the support pipe 11 and the fixed pipe. The steam discharge device of the electric pressure cooker, characterized in that the upper surface of (18) is inserted and fixed to close the space portion of the support tube 11, the spring 22 of the movable shaft 14 is installed.

Description

Steam discharge device of electric pressure cooker

The present invention relates to a steam discharge device of an electric pressure cooker, and more particularly, to isolate the spring from the steam passage to restore the operation of the solenoid valve when the power is cut off so that the steam is discharged to the outside without contacting the spring The present invention relates to a steam discharge device for an electric pressure cooker.

In general, as shown in Figure 1, the electric pressure cooker, the heating pot 101 is formed by opening the upper portion so as to contain rice therein, the predetermined space is formed, and the heating plate 102 is embedded with a heater to heat the bottom surface thereof. And a heating heater 103 installed at an upper side of the heating cooker 101 to heat the inside of the heating cooker 101, and a lid 106 which seals the upper opening of the heating cooker 101. ), The heat insulation case 104 which enclosed these outer shells, and the lid 105 which opens and closes the upper part of this heat insulation case 104 is comprised.

On the other hand, the lid 105, when the internal steam pressure of the heated cooker 101 reaches a predetermined value, that is, the safety valve to allow the internal steam pressure to be discharged to the outside or forced to the outside in the process of changing cooking to keep warm 107 is provided, the safety valve 107 is in communication with the cover 106 of the heating cooker 101, the discharge pipe 107a protruding to the upper portion of the lid 105, and the upper end of the discharge pipe 107a It is installed so as to close the internal steam pressure of the heating cooker 101 reaches a predetermined value and consists of a weight 107b for opening the discharge pipe 107a by this steam pressure.

In addition, when the discharge pipe (107a) of the safety valve 107 is not blocked or operated, the steam discharge device 108 for operating the solenoid valve electrically in accordance with the set internal steam pressure of the heating cooker to discharge the steam pressure to the outside It is provided.

Here, an example of a conventional steam discharge device for an electric pressure cooker is shown in FIG. 2.

As shown, the conventional steam discharge device of the electric pressure cooker is a case 110 is formed with a cylindrical space portion in the longitudinal direction in the center while the electromagnet coil tube 111 is the cover of the lid 105 and the heating cooker 101 Guides 112 provided between the 106 and longitudinal steam passages 112a formed therein are fixed to the upper ends of the spaces of the case 110, and are screwed by the cover 106 and the fasteners 118. Is fastened, the fixing tube 113 having a steam passage (113a) in communication with the heating cooker 101 is inserted between the lower surface of the case 110 and the upper surface of the cover 106 to the fixing cap 115 A movable shaft 114 having a close contact member 116 provided on the bottom surface and a steam passage 114a formed in the longitudinal direction therein is fixed to the lid 106 and a lower portion of the guide tube 112 and a fixed tube 114. Is installed between the upper portion of the top is elastically installed with the guide tube 112 and the spring 117 above When power is applied to the electromagnet coil tube 111, the movable shaft 114 is raised to open the steam passage 113a of the fixed tube 113, and when the power is cut off, the fixed tube (Elasticly lowered by the spring 117) The solenoid valve which closes the steam passage 113a of 113 is provided.

When the conventional steam discharge device of the electric pressure cooker, when cooking the hot plate 102 is heated while heating the bottom of the heating pot 101 containing the rice is set a constant steam pressure inside the sealed heating cooker 101 When the power is applied to the electromagnetic coil tube 111 of the solenoid valve. As power is applied to the electromagnet coil tube 111, the movable shaft 114 is lifted by the electromagnetic force to separate the contact member 116 from the steam passage 113a of the fixed tube 113. At this time, the steam passage (113a) of the fixed tube 113 and the steam passage (114a) of the movable shaft 114 and the steam passage (112a) of the guide tube 112, the internal steam pressure of the heating cooker 101, which was closed, was opened. Will be discharged to the outside.

On the other hand, when the power applied to the electromagnet coil tube 111 of the solenoid valve is cut off, the movable shaft 114 is lowered by the spring 117, the close contact member 116 to the steam passage (113a) of the fixed tube 113 Close contact with the inside of the heating cooker 101 is to be closed again.

However, the steam discharge device of the conventional electric pressure cooker has some problems despite its usefulness. That is, the discharged steam is discharged to the outside through the steam passage (112a) of the guide tube 112 while contacting the spring 117, the rice waste generated by cooking rice during long-term use, that is, foreign matter In the process of being discharged along the spring 117 to interfere with the operation of the movable shaft (114).

Operation interference of the movable shaft 114 due to the spring 117 is to reduce the operating performance of the solenoid valve, and also lack the safety that can cause the explosion of the heated cooker 101 by the steam pressure Poor cooking and failure caused frequent problems.

Therefore, the present invention was devised in view of the above-described conventional problems, and when the power is cut off to the solenoid coil tube of the solenoid valve, the spring is returned from the steam passage to restore its operation from the steam passage without contacting the spring. It is an object of the present invention to provide a steam discharge device for an electric pressure cooker that can be discharged to the solenoid valve to have a reliable operation.

1 is a cross-sectional side view showing a schematic internal configuration of a general electric pressure cooker

Figure 2 is a side cross-sectional view showing the internal structure of the steam discharge device of the conventional electric pressure cooker

Figure 3 shows the internal structure of the steam discharge device of the electric pressure cooker according to a preferred embodiment of the present invention, when the power is cut off to the solenoid valve to close the steam passage communicating with the heating cooker to seal the inside of the heating cooker State diagram

Figure 4 is an exploded perspective view of the main portion showing the configuration according to an embodiment of the present invention

Figure 5 shows the internal structure of the steam discharge device of the electric pressure cooker according to a preferred embodiment of the present invention, when the power is applied to the solenoid valve by opening the steam passage communicating with the heating cooker the internal steam pressure of the heating cooker State discharged to

* Explanation of symbols for main parts of the drawings

10 case 11 support tube

12: guide 11a: guide

13: electromagnet coil tube 14: movable shaft

14a: steam discharge hole 14b: fixed protrusion

15: contact member 15a: fixing groove

16 discharge pipe 17 bellows

18: fixed tube 18a: steam passage

19: sealing ring 20: washer

21: fixed cap 21a: steam inlet hole

22: spring

When explaining the embodiment of the present invention in more detail based on the accompanying drawings as follows.

Steam discharging device of the electric pressure cooker according to the embodiment of the present invention, as shown in Figure 3 and 4, the case 10 inserted between the lid 5 of the electric pressure cooker and the cover 6 of the heating cooker. A guide tube 12 having a longitudinal guide hole 12a is screwed to the inner upper end of the lower portion, and a support tube 11 having a cylindrical space portion therein is provided in the lower portion of the guide tube 12 through the space portion. It is fixed to the installation, while the electromagnet coil tube 13 is fixed to the outer shell of the support tube 11, while the lower end of the case 10 to be in contact with the outer shell of the support tube 11 while being heated and A fixed tube 18 having a communicating steam passage 18a is screwed and fixed to the lid 6 of the heating cooker with a fixing cap 21, and an upper end portion of the movable shaft 14 having a close contact member 15 on the lower surface thereof. The contact member is inserted into the discharge pipe 16 is inserted and fixed to the upper and lower flows along the guide hole (12a) of the fixing pipe 18 A steam discharge hole 14a communicating with the discharge pipe 16 is formed from an upper side of the 15, and a spring 22 is installed between the upper outer peripheral surface of the movable shaft 14 and the support pipe 11 to install the electromagnet. When power is applied to the coil pipe 13, the steam passage 18a of the fixed tube 18 is opened while being raised, and when the power is cut off, the steam passage of the fixed tube 18 is lowered by the elastic force of the spring 22. Configure solenoid valves to close 18a). The coupling structure of the contact member 15 and the movable shaft 14 is inserted into the fixing groove (15a) formed in the recessed contact member 15 correspondingly to the fixing projection (14b) protruding from the lower portion of the movable shaft (14) It is made of a fastening structure. The fixed cap 21 fastened to the fixed tube 18 is provided with a plurality of steam inlet holes 21a through which the internal steam pressure of the heating cooker flows into the steam passage 18a of the fixed tube 18.

On the other hand, the central portion of the bellows (17) is attached to the upper side of the vapor discharge hole (14a) formed on the lower end circumference of the movable shaft 14, the outer shell of the bellows (17) of the support pipe (11) The lower surface of the sealing ring 19 installed on the lower surface and the upper surface of the fixed tube 18 is inserted and fixed so as to close the space portion of the support tube 11 in which the spring 22 of the movable shaft 14 is installed. do. The bellows 17 is a soft circular rubber plate that is expanded and contracted when the movable shaft 14 flows up and down to maintain the space of the support tube 11 closed. That is, the steam pressure discharged from the steam passage 18a of the fixed tube 18 is discharged through the steam discharge hole 14a of the movable shaft 14 without contacting the spring 22 by the closed space through the bellows 17. Be sure to

In addition, a washer 20 is inserted into a portion at which the support tube 11 and the sealing ring 19 are in contact with each other to maintain the airtightness between them.

The spring 22 has a resilience force such as an action force at an excessive steam pressure (eg, 1.5 atm) higher than a constant steam pressure (eg, at 0.9 atm) to the heating cooker at the time of completion of cooking.

Referring to the operation of the subject innovation is configured as follows.

First, when a certain steam pressure is set inside the sealed heating pot during cooking and power is applied to the electromagnet coil tube 13 of the solenoid valve, as shown in FIG. 5, an electromagnetic force is applied to the electromagnet coil tube 13 to which power is applied. As this occurs, the movable shaft 14 is pulled upward. As the movable shaft 14 is raised upward, the close contact member 15 which closes the vapor passage 18a of the fixed tube 18 is synchronously raised to open the vapor passage 18a. At this time, the discharge pipe 16 fixed to the upper end of the movable shaft 14 is also synchronously raised, and the internal steam pressure of the heating cooker extended to the steam passage 18a of the fixed tube 18 is due to the steam passage 18a being opened. Accordingly, it is discharged to the outside through the steam discharge hole (14a) and the discharge pipe (16) of the movable shaft (14).

Next, when the power applied to the electromagnetic coil tube 13 of the solenoid valve is cut off, as shown in FIG. 3 again, as the electromagnetic field is extinguished, the movable shaft 14 is lowered by the elastic force of the spring 22. The steam passage 18a of the fixed tube 18 is closed to seal the inside of the heating cooker again.

On the other hand, when the solenoid valve does not operate due to an electrical failure or the like, and the discharge pipe 16 of the safety valve is blocked, an excessive steam pressure (eg, 1.5 atm) higher than a constant steam pressure (eg, 0.9 atm) occurs inside the heating pot. The fixed tube 18 as the spring 22 for closely contacting and closing the movable shaft 14 to the steam passage 18a of the fixed tube 18 is pushed upward as the movable shaft 14 by the excessive steam pressure of the heating cooker. The steam passage 18a is opened, and the vapor pressure is discharged to the outside via the open steam passage 18a.

In the steam discharge process as described above, the spring 22 installed on the movable shaft 14 is insulated so as not to come into contact with the steam discharged by being located in the space portion of the support pipe 11 closed by the bellows 17. Keep it.

Therefore, the present invention is that the spring is isolated from the discharge passage of the steam so that the steam of the heating pot is discharged directly to the outside without contacting the spring, so that it is not subjected to interference by foreign substances mixed in the discharge steam, thereby preventing the failure in advance. Of course, it can have the reliability of the steam discharge device according to the operation of the solenoid valve.

In addition, as the movable shaft and the discharge pipe is synchronously flowed up and down, the steam discharge passage can be shortened to the shortest distance, thereby facilitating the discharge of steam.

Claims (2)

Fixed tube communicating with the heating cooker as the movable shaft 14 installed inside thereof is raised as electricity is applied to the coil pipe 13 of the support pipe 11 installed between the lid 5 and the lid 6 of the heating cooker. By opening the steam passage (18a) of (18) to discharge the internal steam pressure of the heating cooker through the steam discharge hole (11a) of the guide tube 12 communicated to the outside, the electricity to the coil tube 13 is cut off The movable shaft 15 of the electric pressure cooker having a solenoid valve to close the steam passage (18a) of the fixed tube 18 while the movable shaft 15 is lowered by the support tube 11 and the spring 22 elastically installed on the upper end thereof. In the steam discharge device, a vapor discharge hole 14a is formed in communication with the upper portion through the upper side of the contact member 15 provided at the lower end of the movable shaft 14, and is formed on the circumference of the movable shaft 14. The central portion of the steam bellows 17 is attached to the upper side of the formed vapor discharge hole (14a), the outside of the bellows (17) Is inserted into and fixed to a portion where the lower surface of the support tube 11 and the upper surface of the fixed tube 18 closes the space portion of the support tube 11 on which the spring 22 of the movable shaft 14 is installed. Steam discharge device of the electric pressure cooker. The steam discharge device according to claim 1, wherein a sealing ring (19) is inserted into a portion where the lower surface of the support tube (11) and the outer surface of the bellows (17) contact each other.