KR101256472B1 - Vapor discharging valve with heating coil - Google Patents

Abstract

PURPOSE: A steam exhaust valve with a heating coil is provided to maintain the temperature of a flow channel of the steam exhaust valve over dew point and to prevent adhesion by being coagulated on the flow channel of the steam exhaust valve. CONSTITUTION: A coil unit(40) comprises a cylindrical housing(41), a driving coil(42), and a heating coil(43) in a steam exhaust valve equipped with a heating coil. The cylindrical housing includes a mounting unit according to outer circumference. The driving coil is wound in the mounting unit and drives a plunger unit(30) while being applied by a controller. The heating coil is wound in the mounting unit and is heated by being applied by a controller.

Description

Vapor Discharging Valve with Heating Coil

The present invention relates to a steam discharge valve equipped with a heating coil, and more particularly, in the steam discharge valve which is opened and closed by supplying and shutting off power when cooking food such as rice using an electric rice cooker, The present invention relates to a steam discharge valve having a heating coil capable of preventing condensation and adhesion of steam.

In general, an electric rice cooker is used to cook food such as rice, and the electric rice cooker is usually provided with a control valve and a steam discharge valve to control steam pressure in the rice cooker.

The control valve is composed of a weight-like configuration so that the steam discharged through the steam discharge valve is discharged to the outside while overcoming the weight of the weight, the steam discharge valve is cooked or warmed by the control of the rice cooker electric rice cooker It is a valve that shuts off the flow path so that the internal steam is not discharged to the outside and opens the flow path when cooking is completed to discharge the steam to the outside through the control valve.

In addition, the steam discharge valve is a valve that is normally opened and closed by using a magnetic force generated by using a solenoid coil. During cooking, the valve is closed to keep the steam inside the rice cooker so that the steam is kept at a pressure higher than the set pressure. When rising, the valve is intermittently opened (relief open) to maintain a constant pressure inside the rice cooker, and when cooking is completed, the user can safely open the rice cooker by discharging residual steam inside the rice cooker.

The steam discharge valve is divided into a normally-close valve and a normally-open valve according to the normally open / closed state. The normally-open valve is a solenoid to maintain the pressure inside the rice cooker when cooking. The power is supplied to the coil to cut off the steam discharge flow path, and after cooking, the power is cut off to open the steam discharge flow path to operate to discharge residual steam inside the cooker.

As an example of such a normally open valve, Unexamined-Japanese-Patent No. 2002-0001834 (the solenoid valve apparatus with a built-in normally open safety valve of an electric pressure cooker combined with a cooker) is mentioned.

The valve disclosed in this document is composed of a body portion 100, a coil portion 200, the operation and safety valve portion 300 as shown in Figure 1 is always open when the power is off, the solenoid frame when the power is applied The valve is closed while the mover 320 is horizontally moved by the stator 310 provided in the 210. When the pressure inside the cooker rises to a pressure higher than the set pressure in a state where power is applied, the diaphragm is caused by steam pressure. The valve is opened while the 330 and the moving shaft 340 are raised.

That is, when cooking, the power is applied to the solenoid coil to keep the valve closed, but when the power is cut off, the valve is opened. However, since the solenoid coil is powered off, heat cannot be released from the solenoid coil, so that the temperature on the steam discharge passage cannot be maintained at a temperature at which steam does not condense. Starch and the like contained in the steam is condensed together as the steam is condensed to adhere to the surface in the flow path, in this case there is a problem that the opening and closing operation of the valve is not maintained smoothly, malfunction occurs.

The present invention has been made to solve the problems of the conventional steam discharge valve as described above, and is provided with a heating coil to prevent the malfunction of the steam discharge valve in advance by preventing adhesion due to condensation of steam on the steam discharge valve The purpose is to provide a steam discharge valve.

An object of the present invention as described above is the coil unit of the steam discharge valve is a cylindrical housing in which a through hole is formed and a seating portion is formed along the outer circumference, and wound around the seating portion and powered by a controller to drive the plunger unit. And a heating coil, a heating coil wound around the seating portion and positioned at a lower portion relative to the driving coil, and generating heat by being supplied with power from the controller, and an insulating part surrounding the driving coil and the heating coil. Is achieved by applying power to the drive coil when closing the valve and applying power to the heating coil instead of interrupting the power applied to the drive coil when opening the valve.

Another method of the coil unit includes a cylindrical housing in which a through hole is formed and a seating portion is formed along an outer circumference, a drive coil wound around the seating portion, and supplied with power by a controller to drive a plunger unit; And a heating coil wound around the outer circumferential surface to generate heat by applying power from the controller, and an insulating part surrounding the driving coil and the heating coil, wherein the controller applies power to the driving coil and closes the valve when the valve is closed. It is achieved by configuring to apply power to the heating coil instead of interrupting the power applied to the drive coil when opening.

In this case, the seating portion is formed of a first seating portion in which the driving coil is wound and a second seating portion in which the heating coil is seated, and a diaphragm is provided between the first seating portion and the second seating portion, or the driving Cylindrical diaphragm may be further provided between the coil and the heating coil.

The coil unit may be installed at a side of the main body so that the plunger unit is slid horizontally to operate the diaphragm.

The plunger unit may include a cylindrical plunger, a shaft having one end connected to the plunger and the other end coupled to the diaphragm, and an elastic spring installed between the plunger and the shaft to elastically support the shaft. .

The plunger unit includes a cylindrical plunger and a shaft having one end connected to the plunger and the other end coupled to the diaphragm. The main body is installed in a direction opposite to the plunger unit and selectively connects the diaphragm by the elastic spring. It may be implemented that the shaft is further provided to open.

The coil unit may include a cover made of a metal material to surround the outer circumferential surface of the insulating part and be in contact with the main body, and the heat generated from the heating coil may be transferred by the cover to the main body.

According to the present invention, when the coil unit is provided with a driving coil and a heating coil, respectively, power is applied from the controller, and the plunge unit is operated, the steam discharge valve is heated through self-heating of the driving coil, and power is supplied from the controller to the driving coil. In this case, the steam discharge valve may be heated separately from the operation of the plunge unit by applying power to the heating coil. As a result, the steam discharge valve may be heated at all times regardless of the opening / closing operation state of the steam discharge valve. The temperature on the discharge flow path is maintained above the dew point temperature, whereby steam condenses on the flow path of the steam discharge valve and does not stick.

1 is a cross-sectional view showing an example of a conventional self-opening safety valve built-in solenoid valve device of a conventional cooker combined electric pressure cooker,
2 is a perspective view showing an example of a normally open steam discharge valve having a heating coil according to the present invention;
3 is an isolated perspective view of FIG. 2;
Figure 4 is a use state showing a state in which the normally open steam discharge valve with a heating coil in accordance with the present invention opened;
5 is a use state diagram showing a normally open steam discharge valve having a heating coil according to the present invention in a closed state;
6 is a use state diagram showing a state in which the relief open operation of the normally open steam discharge valve having a heating coil according to the present invention,
7 is a cross-sectional view showing another embodiment of a driving coil and a heating coil according to the present invention;
8 is a cross-sectional view showing another form of a normally open steam discharge valve having a heating coil according to the present invention;
9 is a cross-sectional view showing another embodiment of the driving coil and the heating coil in FIG.

Hereinafter, the configuration and operation of the present invention through the accompanying drawings showing a preferred embodiment of the invention in more detail.

The present invention relates to a normally open steam discharge valve is installed in the rice cooker and provided with a heating coil for discharging the residual steam inside the rice cooker after cooking, the steam discharge valve of the present invention as shown in Figures 2 and 3 The main body 10, the diaphragm 20, the plunger unit 30, the coil unit 40, the vapor discharge tube 50 and a controller (not shown), wherein the coil unit 40 is the housing 41 , A driving coil 42, a heating coil 43, an insulating part 44, and covers 45 and 46.

The steam discharge valve according to the present invention is a normally open valve in which the plunger unit 30 is raised by the elastic spring in a state where power is not applied from the controller so that the orifice 11 is always opened. As shown in FIG. 3, one end is coupled to the main body 10 having an orifice 11 and an outlet 12 formed therein, a diaphragm 20 selectively opening and closing the orifice 11, and one end of the diaphragm 20. It may be implemented to include a plunger unit 30, a coil unit 40 for raising or lowering the plunger unit 30 and a vapor discharge tube 50 connected to the outlet 12.

At this time, the plunger unit 30 is elastically supported by the stopper 31 and the elastic spring 33 to which the plunger 32 is installed and fixed to the coil unit 40, and the diaphragm by the shaft 34 installed in the plunger 32. Orifice 11 is always opened if power is not applied to the drive coil 42 of the coil unit 40 while the force for raising the 20 is constantly acting.

When power is applied to the coil unit 40 from the controller, the shaft 34 of the plunger unit 30 is lowered, whereby the orifice 11 is blocked by the diaphragm 20 to block the vapor discharge flow path.

Such a normally open valve is a flow path of the steam discharge valve while the main body 10 is heated by heat generated by the drive coil 42 of the coil unit 40 driving the plunger unit 30 when the power is applied from the controller. The temperature of the phase may be maintained at a temperature higher than the condensation temperature, but when the flow path is opened so that steam is discharged to the outside by cutting off the power applied to the drive coil 42 from the controller, power is supplied to the drive coil 42 of the coil unit 40. This is not applied to the heat generated by the resistance heat, and as a result, the temperature on the flow path of the steam discharge valve is lowered to a temperature below the condensation temperature, the steam can be condensed and adhered in the flow path.

Therefore, the present invention is configured to be always heated in the coil unit 40, for this purpose, the present invention as shown in Figure 3 the coil unit 40, the housing 41, the drive coil 42, the heating coil ( 43), insulation 44 and covers 45, 46.

The housing 41 has a through hole H formed at the center thereof, and a plunger unit 30 is installed at the through hole H, and a seating portion 41A is formed along the circumference, so that the driving coil 42 described later. ) And the heating coil 43 are respectively wound.

The drive coil 42 is wound around the seating portion 41A of the housing 41 and selectively supplied with power by a controller to be described later, thereby driving the plunger unit 30, thereby driving the plunger unit 30. It is preferable that the amount is wound up to provide an appropriate driving force to drive the.

At this time, the seating portion 41A may be implemented differently depending on the relationship in which the driving coil 42 and the heating coil 43 are wound. First, as shown in FIG. 4, the driving coil 42 and the heating coil 43 are When the upper and lower sides are positioned to each other, the first mounting portion 41A ', on which the driving coil 42 is wound, and the second mounting portion 41A ″, on which the heating coil 43 is seated, are formed. A diaphragm 41B partitioning the seating portion 41A is provided between the first seating portion 41A 'and the second seating portion 41A ″ to divide the area where the drive coil 42 and the heating coil 43 are wound. It is implemented by partitioning by 41B.

In addition, when the heating coil 43 is wound around the outer circumferential surface of the driving coil 42, it is implemented as one seat 41A as shown in FIG. 7. In this case, a cylindrical diaphragm 41B may be further installed between the driving coil 42 and the heating coil 43.

On the other hand, the heating coil 43 is selectively supplied with power from the controller to generate heat, and in order not to cause magnetic interference to the driving coil 42 due to the supply of power, about 1/2 of the total volume of the driving coil 42. It is preferred to be installed at a degree or less.

At this time, a space of a predetermined interval is provided between the driving coil 42 and the heating coil 43, or a diaphragm 41B is further provided between the driving coil 42 and the heating coil 43 to supply power to each coil. It is desirable not to be affected. When power is applied to the heat generating coil 43 from the controller, heat of resistance is generated in the heat generating coil 43, and the inside of the steam discharge valve is maintained at a temperature higher than the condensation temperature due to the resistance heat. Adhesion due to vapor condensation inside is prevented.

In addition, the insulating portion 44 installed to surround the driving coil 42 and the heating coil 43 is applied to the driving coil 42 and the heating coil 43 to supply a plurality of steam discharge valves formed of surrounding metal materials. The device is installed for the purpose of insulation to protect against electrical shock.

In addition, the cover 45 and 46 of the metal material which surrounds the outer circumferential surface of the insulating part 44 and is installed to be in contact with the main body 10 have resistance heat generated from the heating coil 43 through the cover 45 and 46. 10) to be well communicated. In this case, a sleeve (not shown) is inserted into the through hole H, and the plunger 32 is inserted into the sleeve, and the upper surface of the plunger 32 has an outer diameter relatively larger than that of the through hole H. The cover 45 is installed, and the through hole H is not exposed to the outside by the cover 45. As a result, the condensed water condensed at the upper portion of the coil unit 40 does not flow into the through hole H. .

Steam outlet tube 50 is connected to the outlet 12 of the main body 10, whereby the steam passing through the orifice 11 is discharged to the outside, this steam outlet tube 50 is shown in FIG. As it is coupled to the side of the main body 10, the outlet 12 and the flow path is connected.

In the normally open steam discharge valve having the heating coil of the present invention configured as described above, when the state of the rice cooker is in a cooking or warming state, power is supplied from the controller to the driving coil 42 of the coil unit 40 to supply the plunger. 32 is lowered, thereby keeping the orifice 11 blocked by the diaphragm 20 to block the steam inside the rice cooker from being discharged to the outside. In this case, the power supply to the driving coil 42 is maintained. Since it is in the applied state, heat is released from the drive coil 42, whereby the temperature of the main body 10 is maintained at a temperature equal to or more than the dew point, so that steam condenses on the diaphragm 20 and its surroundings and does not stick.

And when cooking is completed, it is necessary to discharge the steam inside the rice cooker to the outside, in this case, the power applied to the drive coil 42 by the control of the controller is cut off, the controller instead of the heating coil 43 Power on.

As a result, the plunger 32 separates the diaphragm 20 from the orifice 11 while the position is returned by the elastic support force of the elastic spring 33, so that the flow path of the steam discharge valve is opened to discharge steam, and at the same time, heat is generated. As the heat is released from the coil 43 and the body 10 maintains the temperature above the dew point, the temperature on the flow path of the steam discharge valve maintains the temperature above the dew point, thereby lowering the temperature of the steam on the flow path of the steam discharge valve. And as a result, sticking due to condensation of steam is prevented.

On the other hand, the steam discharge valve to which the coil unit 40 of the present invention is applied may be applied to the horizontal valve in addition to the valve of the vertical type described above, as shown in FIG. A steam discharge flow path is formed through the furnace, and a pair of orifices are formed to open both sides of the flow path, and a pair of diaphragms 20 and 20 'are provided to contact each of the orifices, and one side diaphragm 20 is provided. To the shaft 34 of the plunger unit 30 is coupled.

The other diaphragm 20 'is provided with a shaft 34 elastically supported by the elastic spring 33 so that when the steam pressure in the rice cooker is excessively increased, the diaphragm 20' is elastic spring by the steam pressure ( The valve is opened apart from the orifice of the diaphragm 20 'as the elastic force of 33 is overcome.

In addition, the coil unit 40 installed to surround the plunger unit 30 is installed on the side of the main body 10, the shaft 34 is horizontally sliding operation while the valve is opened and closed.

The coil unit 40 of the horizontal valve as described above may also be implemented differently depending on the positional relationship in which the driving coil 42 and the heating coil 43 are wound, as applied to the vertical valve. ) Is composed of a first seating portion 41A 'on which the driving coil 42 is wound, and a second seating portion 41A "on which the heating coil 43 is wound, and the first and second seating portions 41A', 41A. The space may be partitioned by the diaphragm 41B between the "

Alternatively, as shown in FIG. 9, one seating portion 41A is formed on the outer circumferential surface of the housing 41, and after the driving coil 42 is wound around the seating portion 41A, the driving coil 42 is formed. The heating coil 43 may be wound around the outer circumferential surface thereof.

As described above, in the present invention, even when the power is cut off to the driving coil 42 to discharge residual steam inside the rice cooker, since the power is applied to the heating coil 43, due to the heat of resistance of the heating coil 43. The temperature in the steam discharge passage is not lowered to a temperature below the condensation temperature, whereby the steam does not condense, thereby preventing malfunction of the valve due to sticking.

10: body 11: orifice
12: outlet 20, 20 ': diaphragm
21: holder 30: plunger unit
31: stopper 32: plunger
32A: Adjustment screw 33: Elastic spring
34: shaft 40: coil unit
41: housing 41A: seating portion
41A ': First seat 41A ″: Second seat
41B: plate 42: drive coil
43: heating coil 44: insulation
45, 46: cover 50: steam discharge tube
H: through hole

Claims (8)

A main body 10 having an orifice 11 and an outlet 12 through which steam is discharged; A diaphragm 20 installed on an upper surface of the main body 10 to open and close the orifice 11; A plunger unit 30 coupled to the diaphragm 20 to move up and down; It is installed to surround the plunger unit 30, the coil unit 40 for lowering the operation and heating the plunger unit 30 and the steam discharge tube 50 and the coil unit connected to the outlet 12 A steam discharge valve comprising a controller for selectively applying power to (40),
The coil unit 40 has a through-hole (H) is formed, the cylindrical housing 41 of the seating portion 41A is formed along the outer periphery;
A drive coil (42) wound around the seating portion (41A) and powered by the controller to drive the plunger unit (30);
A heating coil (43) wound around the seating portion (41A) and positioned at a lower portion relative to the driving coil (42) and generating heat by applying power from the controller;
Insulating part 44 surrounding the driving coil 42 and the heating coil 43,
The controller applies power to the drive coil 42 when closing the valve, and applies power to the heating coil 43 instead of interrupting power applied to the drive coil 42 when opening the valve. Steam discharge valve provided with a heating coil, characterized in that.
A main body 10 having an orifice 11 and an outlet 12 through which steam is discharged; A diaphragm 20 installed on an upper surface of the main body 10 to open and close the orifice 11; A plunger unit 30 coupled to the diaphragm 20 to move up and down; It is installed to surround the plunger unit 30, the coil unit 40 for lowering the operation and heating the plunger unit 30 and the steam discharge tube 50 and the coil unit connected to the outlet 12 A steam discharge valve comprising a controller for selectively applying power to (40),
The coil unit 40 has a through-hole (H) is formed, the cylindrical housing 41 of the seating portion 41A is formed along the outer periphery;
A drive coil (42) wound around the seating portion (41A) and powered by the controller to drive the plunger unit (30);
A heating coil 43 wound around the outer circumferential surface of the driving coil 42 and configured to generate heat by being supplied with power from the controller;
Insulating part 44 surrounding the driving coil 42 and the heating coil 43,
The controller applies power to the drive coil 42 when closing the valve, and applies power to the heating coil 43 instead of interrupting power applied to the drive coil 42 when opening the valve. Steam discharge valve provided with a heating coil, characterized in that.
The method according to claim 1,
The seating portion 41A includes a first seating portion 41A 'on which the driving coil 42 is wound; The heating coil 43 is composed of a second seating portion (41A ″) is seated, and between the first seating portion (41A ') and the second seating portion (41A ″) is provided with a diaphragm (41B) Steam discharge valve equipped with a heating coil.
The method according to claim 2,
A steam discharge valve having a heating coil, characterized in that a cylindrical diaphragm 41B is further provided between the driving coil 42 and the heating coil 43.
The method according to any one of claims 1 to 4,
The coil unit 40 is installed on the side of the main body 10, the plunger unit 30 is horizontally sliding operation to operate the diaphragm 20, characterized in that the steam discharge valve with a heating coil.
The method according to any one of claims 1 to 4,
The plunger unit 30 has a cylindrical plunger 32; A shaft 34 having one end connected to the plunger 32 and the other end coupled to the diaphragm 20; A steam discharge valve having a heating coil, characterized in that it comprises an elastic spring (33) installed between the plunger (32) and the shaft (34) to elastically support the shaft (34).
The method according to any one of claims 1 to 4,
The plunger unit 30 has a cylindrical plunger 32; One end is connected to the plunger 32 and the other end includes a shaft 34 is coupled to the diaphragm 20,
The main body 10 is provided in a direction opposite to the plunger unit 30, the heat generation characterized in that the shaft 34 for selectively opening the diaphragm 20 by the elastic spring 33 is further provided. Steam discharge valve with coil.
The method according to any one of claims 1 to 4,
The coil unit 40 further includes a cover 45 made of a metal material to surround the outer circumferential surface of the insulating portion 44 and to be brought into contact with and coupled to the main body 10.
The steam discharge valve with a heating coil, characterized in that the heat generated from the heating coil (43) is transmitted by the cover 45 is configured to be transmitted to the main body (10).

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