KR100564818B1 - Apparatus for discharging steam of an electric pressure cooker - Google Patents

Abstract

The present invention discloses a steam discharge device for an electric pressure cooker capable of performing the pressure maintaining function, the emergency safety function and the discharge function in one body. The steam discharge device of the present invention is a steam discharge passage vertically penetrated therein, a main connecting passage horizontally penetrating the central portion of the steam discharge passage, a maintenance valve flow passage extending in the longitudinal direction at one end of the main connecting passage, the main connecting passage And the holding valve orifice formed at the connection position of the holding valve flow path, the safety valve flow path extending in the longitudinal direction to the other end of the main connecting passage, the safety valve orifice formed at the connecting position of the main connecting passage and the safety valve flow path, A device body is provided which consists of auxiliary connecting passages formed horizontally at the bottom of the closed inner wall. The pressure holding valve is installed in the holding valve flow path to open the holding valve orifice when electricity is conducted. A discharge valve is installed in the safety channel to open the safety valve orifice when no electricity is conducted. The emergency safety valve is installed in the safety valve flow path to open the safety valve orifice when electricity is conducted. Due to this configuration, by providing the pressure maintaining valve, the emergency safety valve and the discharge valve together in one device body, it is possible to simplify the configuration circuit and reduce the cost.

Electric pressure cooker, steam discharge device, pressure holding valve, emergency safety valve, discharge valve.

Description

Steam outlet of electric pressure cooker {APPARATUS FOR DISCHARGING STEAM OF AN ELECTRIC PRESSURE COOKER}

1 is a cross-sectional view of the steam discharge device of the electric pressure cooker according to a preferred embodiment of the present invention showing a state in which the pressure holding function is performed when electricity is conducted.

2 is a cross-sectional view of the steam discharge device of the electric pressure cooker of FIG. 1 showing a state in which an emergency safety function is performed when electricity is conducted; And

Figure 3 is a cross-sectional view of the steam discharge device of the electric pressure cooker of Figure 1 showing a state that the discharge function is performed when the electricity is off.

* Description of the symbols for the main parts of the drawings *

100: steam exhaust device

110: body 112: steam exhaust

114: main connecting passage 116: holding side flow path

118: safety side Euro 119: auxiliary connecting passage

120: holding valve diaphragm 128: holding valve spring

130: discharge valve diaphragm 139: plunger

139a: third guide hole 140: safety valve spring guide shaft

142: safety valve spring

The present invention relates to a steam discharge device for an electric pressure cooker, in particular, a regulator function for maintaining a constant pressure, a relief function for discharging steam when the pressure is increased due to emergency factors, and a discharge function for discharging steam when cooking is completed The present invention relates to a steam discharging device for an electric pressure cooker, which can be formed in one body and can prevent viscous fluid from remaining in the holding valve flow path.

In general, the steam discharge device of the electric pressure cooker is to discharge the high temperature and high pressure steam generated in the pressure vessel to the outside through the steam discharge passage opened and closed by the solenoid valve.

These steam exhaust devices have been constantly trying to improve the stability. As one of the representative prior arts, there is a patent application filed on December 9, 1998 by Applicant CNS, and registered as a patent registration number 10-0304605 on July 24, 2001. This is because when the normally open solenoid valve for opening and closing the steam discharge passage is malfunctioning and the steam in the pressure vessel is not discharged through the steam discharge passage, the normally closed safety valve is opened by the steam pressure to discharge the steam. There is an effect that can ensure the safety. However, such a conventional steam discharge device has a problem that the fluid remains in the low position of the steam discharge flow path in the safety valve, the fluid is fixed in the steam discharge flow path due to the characteristic of the viscous fluid. In addition, since the rice bran cooked without washing is fixed to the inner wall of the steam discharge passage, there is a concern that the functions of the emergency safety valve and the discharge valve may be reduced.

Another conventional technology has been filed by the applicant, Parker Co., Ltd. as a utility model registration application No. 20-1999-0008693 dated May 20, 1999. It is equipped with a normally open solenoid valve for steam discharge between the lid of the cooking pressure cooker and the enclosure, and a microcomputer is installed to control the solenoid valve when the safety pressure is exceeded during cooking. To control it. Conventional techniques as described above required a pressure maintaining function to maintain a constant pressure in the rice cooker during cooking to cook more delicious rice.

Accordingly, the present invention is to solve the above problems, an object of the present invention to provide a steam discharge device of the electric pressure cooker capable of performing the pressure maintaining function, emergency safety function and discharge function in one body. .

Another object of the present invention is to provide a steam discharge device for an electric pressure cooker in which there is no residual fluid in the maintenance valve flow path and the safety valve flow path.

In order to achieve the above object, the present invention provides a steam discharge device of the electric pressure cooker installed between the lid and the pressure cooker lid,

A steam discharge passage vertically penetrated therein, the main connecting passage horizontally penetrating the central portion of the steam discharge passage, a holding side flow passage extending in the longitudinal direction at one end of the main connecting passage, the main connecting passage and the holding edge A holding valve orifice formed at a connection position of the flow path, a safety valve flow path extending in the longitudinal direction at the other end of the main connection passage, a safety valve orifice formed at a connection position between the main connection passage and the safety valve flow passage, the holding valve flow path and the safety valve. A device body comprising an auxiliary connecting passage formed horizontally at the bottom of the closed inner wall of the flow path;

Pressure holding means provided in the holding valve flow path to open the holding valve orifice when electricity is conducted;

Discharge means installed in the safety fluid path so as to open the safety valve orifice when electricity is not conducted; And

Emergency safety means installed in the safety valve flow path to open the safety valve orifice when electricity is conducted.

It is to provide a steam discharge device of the electric pressure cooker comprising a.

The pressure holding means is provided in the holding valve flow path of the device body, and the pressure holding means is installed on the closed inner wall of the holding valve flow path of the device body to hold or seal the holding valve orifice. Fram; The holding diaphragm guide shaft protruding to the rear of the holding diaphragm; A holding valve lid coupled to an open end of the holding valve passage, a first guide hole formed at a central portion thereof to allow the holding valve diaphragm guide shaft to enter and exit, and having one side protruding high information; And a retaining valve spring fitted to the high information to push the retaining valve diaphragm to close the retaining valve orifice.

The discharge means is installed in the safety valve flow path of the device body, the discharge means is installed on the closed inner wall of the safety valve flow path of the device body discharge valve diaphragm for opening the safety valve orifice; A discharge valve diaphragm guide shaft protruding to the rear of the discharge valve diaphragm; A housing coupled to the open end of the safety valve passage and having a hollow inside, one side of which is closed, the other side of which is open, and a second guide hole of the discharge side diaphragm guide shaft passing through the closed side; A mold coil installed along the inner wall of the housing and having a hollow formed therein; A fixed core installed in the hollow of the mold coil; And a plunger slidably installed in the hollow of the mold coil subsequent to the fixing core.

The emergency safety means is installed in the third guide hole penetrated in the longitudinal direction of the inside of the plunger, the emergency safety means is slidably installed in the third guide hole of the plunger diaphragm guide shaft Safety side spring guide shaft actuated by; And a safety valve spring installed in the third guide hole of the plunger to be located behind the safety valve spring guide shaft.

According to the steam discharge device of the electric pressure cooker according to the present invention having such a feature, an auxiliary connecting passage is formed between the holding valve flow path and the safety valve flow path in the apparatus body. A pressure retaining valve is to be installed in the body of the device and a discharge valve which serves as an emergency safety valve. Due to this configuration, the steam exhaust device of the present invention can obtain the effect of cost reduction with the simplification of the configuration circuit.

The objects and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments with reference to the accompanying drawings.

Figure 1 shows the steam discharge device 100 of the electric pressure cooker according to a preferred embodiment of the present invention showing a state in which the pressure maintenance is carried out when electricity is conducted. Figure 2 shows the steam discharge device 100 of the electric pressure cooker of Figure 1 showing the state in which the emergency safety function is performed when electricity is conducted. Figure 3 shows the steam discharge device 100 of the electric pressure cooker of Figure 1 showing a state that the discharge function is performed when the electricity is off.

As shown in Figures 1 to 3, the steam discharge device 100 of the present invention is installed between the enclosure lid 102 and the pressure cooker lid 104 of the electric pressure cooker (not shown). The steam discharge device 100 is provided with a device body 110, the pressure holding valve (PV) and the discharge valve (EV).

The steam discharge path 112 penetrates vertically inside the device body 110. The main connecting passage 114 penetrates horizontally through the central portion of the steam discharge passage 112. At one end of the main connecting passage 114, the holding valve flow passage 116 extends in the longitudinal direction. At this time, the holding side orifice 116a is formed at the connection position between the main connecting passage 114 and the holding side passage 116. The other end of the main connection passage 114 is formed with a safety valve 118 extending in the longitudinal direction. At this time, the safety valve side orifice 118a is formed at the connection position between the main connection passage 114 and the safety valve channel 118. In addition, the auxiliary connection passage 119 is horizontally formed on the closed inner wall of the holding valve passage 116 and the safety valve passage 118 so as to be connected to each other.

The pressure holding valve PV is installed in the holding valve flow path 116 of the device body 110. The pressure holding valve PV includes a holding valve diaphragm 120, a holding valve diaphragm guide shaft 122, and a holding valve cap 124. The holding valve diaphragm 120 is installed on the closed inner wall of the holding valve flow path 116 of the device body 110 to open or close the holding valve orifice 116a. The holding side diaphragm guide shaft 122 protrudes rearward of the holding side diaphragm 120. The holding valve lid 124 is coupled to the open end of the holding valve passage 116. This is to cover the holding valve diaphragm 120 so as not to be exposed to the outside. In addition, a first guide hole 124a is formed at the central portion of the retaining valve cap 124 to allow the retaining valve diaphragm guide shaft 122 to enter and exit. On one side of the holding valve cap 124, the high information 126 is formed. The retaining edge spring 128 is fitted to the high information 126 so that the retaining valve diaphragm 120 performs the function of closing the retaining valve orifice 116a. For reference, the elastic force of the holding side spring 128 and the holding side diaphragm 120 is designed to withstand up to a predetermined pressure. Here, the predetermined pressure varies depending on the manufacturer but is in the range of approximately 0.7 to 0.9 kgf / cm 2.

The discharge valve EV is installed in the safety valve flow path 118 of the device body 110. The discharge side EV includes the discharge side diaphragm 130, the discharge side diaphragm guide shaft 132a, the housing 134, the mold coil 136, the fixing core 138, the plunger 139, and the housing base plate 134b. ) And the frame lid 134c.

The discharge valve diaphragm 130 is installed on the closed inner wall of the safety valve flow path 118 of the device body 110 to open or close the safety valve orifice 118a. The discharge side diaphragm guide shaft 132a protrudes to the rear of the discharge side diaphragm 130. The free end of the discharge side diaphragm guide shaft 132a is stepped so as to fit into the small diameter portion 139b of the third guide hole 139a of the plunger 139 which will be described later.

The housing 134 is installed in the device body 110 to cover the open safety valve flow path 118. The housing 134 is in the form of a hollow hollow, one side is closed and the other side is open. The second guide hole 134a of the discharge side diaphragm guide shaft 132a penetrates through the closed side surface of the housing 134. The mold coil 136 is installed along the inner wall of the housing and the hollow is formed through the center. The fixed core 138 is installed in the hollow formed in the mold coil 136. That is, the fixed core 138 is installed from the second guide hole 134a of the housing 134 to a predetermined position at the rear side. The plunger 139 is slidably installed in the hollow of the mold coil 136 subsequent to the fixing core 138.

The third guide hole 139a penetrates in the longitudinal direction inside the plunger 139. The third guide hole 139a is formed with a stepped inner diameter. That is, the front end of the third guide hole 139a is formed of a small diameter portion having a small diameter, and is formed of a large diameter portion having a large diameter at the rear end portion. At this time, the small diameter portion is formed much shorter than the length of the large diameter portion. The safety guide spring guide shaft 140 and the safety guide spring 142 are subsequently inserted into the third guide hole 139a.

Here, the length of the safety valve spring guide shaft 140 and the safety valve spring 142 is approximately equal to the length of the third guide hole 139a of the plunger 139. The outer diameter of the safety valve spring guide shaft 140 is formed stepped. That is, the front end of the safety valve spring guide shaft 140 is formed to correspond to or slightly smaller than the inner diameter of the small diameter portion and the rear end is formed to correspond to or slightly smaller than the inner diameter of the large diameter portion. The elastic force of the safety valve spring 142 and the discharge valve diaphragm 130 is designed to withstand up to a predetermined pressure. Here, the predetermined pressure varies depending on the manufacturer but is in the range of approximately 0.7 to 0.9 kgf / cm 2. Finally, the plurality of tapping screws 144 are fitted from the direction of the discharge side EV to engage the device body 110 together with the pressure holding edge PV.

On the other hand, the surface of the holding valve diaphragm 120 and the discharge valve diaphragm 130 may be coated with a synthetic resin such as Teflon. The reason for this is to prevent the holding valve diaphragm 120 from being fixed to the holding valve orifice 116a and the safety valve orifice 118a of the main body 110, respectively. Preferably, the coated portion of the retention valve diaphragm 120 may be limited only to the side in contact with the orifice.

The operation of the electric pressure cooker according to the preferred embodiment of the present invention having the structure as described above will be described with reference to the accompanying drawings.

Referring back to FIG. 1, when electricity is supplied to the mold coil 136 under the control of the microcomputer (not shown), the plunger 139 induced with the electromagnetic force is advanced to contact the fixed core 138. In this case, the safety valve spring guide shaft 140 pushes the discharge valve diaphragm guide shaft 132a forward. Accordingly, the discharge valve diaphragm 130 coupled with the front end of the safety valve spring guide shaft 140 closes the safety valve orifice 118a of the safety valve passage 118. Under this condition, food cooking using an electric pressure cooker is performed.

When cooking of the food is completed through such a process, if the steam pressure in the electric pressure cooker reaches a predetermined predetermined pressure range (0.7 to 0.9 kgf / cm 2), the holding valve of the pressure holding valve PV is controlled by the steam pressure. The diaphragm 120 reverses toward the holding valve lid 124 to open the holding valve orifice 116a. At this time, the holding side spring 128 is in a compressed state by the reverse operation of the holding side diaphragm 120. In addition, the holding edge diaphragm guide shaft 122 is in a state where a part thereof protrudes into the first guide hole 124a of the holding valve lid 124. In this state, the steam in the electric pressure cooker is discharged to the outside along the lower side steam outlet 112, the main connecting passage 114 and the upper side steam outlet 112 of the apparatus body 110.

Referring back to FIG. 2, the discharge valve diaphragm 130 closes the safety valve orifice 118a of the safety valve flow path 118 under the control of the microcomputer as in FIG. 1. Under this condition, food cooking operation using an electric pressure cooker is performed. During the food cooking operation, when the steam pressure inside the electric pressure cooker reaches a predetermined pressure range, a part of steam in the electric pressure cooker must be discharged to the outside to maintain a constant steam pressure in the electric pressure cooker. The steam discharge device 100 is operated as follows.

First, the holding valve diaphragm 120 maintains the holding valve orifice 116a in a closed state, while the discharge valve diaphragm 130 reverses by the force of the vapor pressure to open the safety valve orifice 118a. In this case, the discharge valve diaphragm guide shaft 132a having one end coupled to the discharge valve diaphragm 130 is also retracted, and the free end of the reversed discharge valve diaphragm guide shaft 132a of the plunger 139 The safety valve spring 142 is inserted into the small diameter portion 139b of the third guide hole 139a to push the safety valve spring guide shaft 140 to compress the safety valve spring 142. In this state, the steam located in the electric pressure cooker is the lower side steam discharge path 112, the main connection passage 114, the safety side flow passage 118, the auxiliary connection passage 119, the holding side flow passage 116 and the upper side It is discharged to the outside through the steam discharge path (112). In this process, the steam joins the residual fluid located in the safety valve flow path 118 and the maintenance valve flow path 116 and is discharged together.

Referring back to FIG. 3, when the food cooking operation is completed, when electricity is not conducted to the mold coil 136 under the control of the microcomputer (not shown), the plunger 139 in which the electromagnetic force is stopped is in an original state. And the spaced apart from the fixed core (138). In this case, the discharge valve diaphragm guide shaft 132a and the discharge valve diaphragm 130 are reversed together to open the safety valve orifice 118a. In this way, the steam in the electric pressure cooker is lower steam discharge path 112, the main connection passage 114, the safety side flow passage 118, the auxiliary connection passage 119, the holding side flow passage 116 and the upper side steam discharge passage. It is discharged to the outside through 112. In this process, the steam joins the residual fluid located in the safety valve flow path 118 and the maintenance valve flow path 116 and is discharged together.

Here, although only the pressure holding valve PV and the discharge valve EV have been described in the description of the present invention, the discharge valve EV also functions as an emergency safety valve (not shown) when electricity is conducted.

As mentioned above, the steam discharge device of the electric pressure cooker according to the embodiment of the present invention is provided with a pressure maintaining valve, an emergency safety valve and a discharge valve together in one device body, thereby simplifying the configuration circuit and reducing the cost Can be obtained.

In addition, by forming an auxiliary connecting passage connecting the holding valve flow path and the safety valve flow path to each other in the device body, the residual fluid and other residues are discharged as the residual fluid of the holding valve flow path and the safety valve flow path is discharged to the outside together with steam. It is possible to prevent the malfunction of the function of the pressure holding valve and the emergency safety valve by fixing.

In the above, the present invention has been described in detail with reference to the above-described embodiments, but the present invention is not limited thereto, and those skilled in the art may change or improve the technology within the scope of ordinary knowledge.

Claims (5)

In the steam discharge device of the electric pressure cooker installed between the lid of the enclosure and the pressure cooker, A steam discharge passage 112 vertically penetrated therein, a main connecting passage 114 penetrating horizontally through a central portion of the steam discharge passage 112, and extending in a longitudinal direction to one end of the main connecting passage 114. A retaining side flow path 116, a retaining side orifice 116a formed at a connection position between the main connecting passage 114 and the holding side passage 116, and extending in the longitudinal direction to the other end of the main connecting passage 114. The safety valve flow path 118, the safety valve orifice 118a formed at the connection position of the main connection path 114 and the safety valve flow path 118, the closed inner of the holding valve flow path 116 and the safety valve flow path 118. A device body comprising an auxiliary connecting passage 119 formed horizontally at the bottom of the side wall; Pressure holding means installed in the holding valve flow path 116 to open the holding valve orifice 116a when electricity is conducted; Discharge means installed in the safety valve flow path 118 to open the safety valve orifice 118a when electricity is not conducted; And Emergency safety means installed in the safety valve flow path 118 to open the safety valve orifice 118a when electricity is conducted. Steam discharge device for an electric pressure cooker comprising a. According to claim 1, wherein the pressure holding means is installed in the holding valve flow path 116 of the device body 110, the pressure holding means The holding valve diaphragm 120 is installed on the closed inner wall of the holding valve flow path 116 of the device body 110 to open or close the holding valve orifice 116a; The holding side diaphragm guide shaft 122 protruding to the rear of the holding side diaphragm 120; It is coupled to the open end of the holding valve flow path 116, the first guide hole (124a) is formed to enter and exit the holding valve diaphragm guide shaft 122 in the central portion, the high information 126 on one side Retention valve protruding from the lid 124; And Retention valve spring 128 for closing the retaining valve orifice 116a by pushing the retaining valve diaphragm 120 is inserted into the high information 126. Steam discharge device for an electric pressure cooker comprising a. The method of claim 1, wherein the discharge means is installed in the safety valve flow path 118 of the device body 110, the discharge means A discharge valve diaphragm 130 installed on the closed inner wall of the safety valve flow path 118 of the device body 110 to open the safety valve orifice 118a; A discharge side diaphragm guide shaft 132a protruding to the rear of the discharge side diaphragm 130; The second guide hole 134a of the discharge valve diaphragm guide shaft 132a is coupled to the open end of the safety valve flow path 118 and has an inner hollow and one side is closed and the other side is opened and closed. A housing 134 through which; A mold coil 136 installed along the inner wall of the housing 134 and having a hollow formed therein; A fixed core 138 installed in the hollow of the mold coil 136; And A plunger 139 slidably installed in the hollow of the mold coil 136 subsequent to the fixing core 138. Steam discharge device for an electric pressure cooker comprising a. 4. The emergency safety means according to claim 1 or 3, wherein the emergency safety means is installed inside the third guide hole 139a penetrated in the longitudinal direction of the interior of the plunger 139. A safety valve spring guide shaft 140 slidably installed in the third guide hole 139a of the plunger 139 and operated by the discharge valve diaphragm guide shaft 132a; And Safety side spring 142 is installed in the third guide hole (139a) of the plunger 139 to be located behind the safety side spring guide shaft 140. Steam discharge device for an electric pressure cooker comprising a. According to claim 2 or 3, wherein the holding valve diaphragm 120 and the discharge valve of the electric pressure cooker, characterized in that the surface of the discharge side diaphragm 130 is Teflon coating treatment.

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