WO2012045242A1 - Steam generating device, control method thereof and household electric steam oven - Google Patents

Abstract

A steam generating device and a control method thereof are disclosed. The steam generating device comprises a water distribution valve (1), a return tube (2), at least one heating tubes (41, 42), a steam-water separator (3) and a control circuit. The heating tubes (41, 42) are arranged between the steam-water separator (3) and the water distribution valve (1). A water inlet (11) and a check valve I (12) for controlling the fluid to flow from the water inlet (11) to the heating tubes (41, 42) are arranged in the water distribution valve (1). The heating tubes (41, 42) comprise at least one heating tube I (41) heating intermittently. A household electric steam oven comprising the steam generating device is further disclosed, which has advantages of saving energy, supplying water adaptively, low price, needing no seal between a water reservoir (6) and the steam-water separator (3), simple design and convenient operation.

Description

 Steam generating device and control method thereof, household electric steamer  Steam generating device and control method thereof, household electric steamer

Technical field

The present invention relates to a steam generating device suitable for use in the field of steam generation and a method of controlling the same, and to a domestic electric steamer including the steam generating device.

Background technique

In the prior art, there are various steam generating devices and household electric steamers. For example, the Chinese invention patent applied for by the applicant on February 12, 2010, with the application number of 201010114441.6 [application name: [home steamer], provides a uniformity of steam release, low cost, energy saving, safety and practicality. a household steamer comprising: a household steamer comprising a steaming chamber, a water storage tank, a steam generator, the steaming chamber being in communication with the steam generator through a steam conduit, the water storage tank and the steam generator Connected by a water supply conduit, the steam generator is composed of at least one heating tube, and a steam-water separation device is connected between the steam generator and the steam chamber, the steam-water separation device is a cavity structure, The water storage tank is in communication with the steam-water separation device and forms a sealed body. However, the household steamer disclosed in the patent has the following disadvantages:

1, The technical solution disclosed in the above patent, in order to prevent the heating pipe from causing excessive air pressure in the heating pipe during operation, and the water in the heating pipe is returned to the water storage tank, the water storage tank is separated from the steam water The devices must be connected to each other and form a sealed body structure. The sealing structure increases the manufacturing cost in the actual production process, and is not convenient in actual use.

2, In the technical solution disclosed in the above patent, in order to ensure that the water in the water storage tank is fully utilized, the installation height of the water storage tank is generally higher than the middle position of the heating pipe, so that the appearance and internal structure of the steamer There were restrictions when designing.

In the existing steam generating device, there is also a steam generating device that uses a water pump to supply water to the heating pipe, but the steam generating device has the following disadvantages: since the adjustment of the steam output amount is controlled by the heating power of the heating pipe, Therefore, such an implementation may cause the water supply amount of the water pump to be mismatched with the heating power of the heat pipe, and the steam generated by the excessive water supply may be insufficient, or the water supply may be insufficient to dry the heating pipe or save energy. . Moreover, since the pump is added in this scheme, the manufacturing cost is also increased.

Summary of the invention

According to the deficiencies in the prior art, an object of the present invention is to provide an energy-saving, adaptive water supply, inexpensive steam generating device and a control method therefor.

Another object of the present invention is to provide a household electric steamer with energy saving, adaptive water supply, low price, no need for sealing between the water storage tank and the steam-water separating device, convenient design and convenient internal structure design, and convenient use.

In order to solve the above technical problem, the technical solution adopted by the present invention is: a steam generating device, comprising a water dividing valve and a return pipe (the lower end of the return pipe may be connected to the water dividing valve, or may be connected to the water storage tank Connected to each other, at least one heat pipe, a steam separator, a control circuit, the heat pipe is disposed between the steam separator and the water dividing valve, and the water dividing valve is provided with a water inlet, The water dividing valve is further provided with a check valve I for controlling fluid flow from the water inlet to the heat pipe; the heat pipe includes at least one heat generating pipe I that intermittently generates heat. The intermittent heat generation state of the heat pipe 1 is realized by the control circuit controlling the on and off state of the power source.

The check valve 1 described in the present technical solution is disposed in the water inlet.

The heat pipe in the technical solution further comprises at least one heat pipe II which is continuously operated; the advantage of such an arrangement is that the efficiency of the steam generating device can be greatly improved. a valve check valve II is disposed in the water distribution valve, and the check valve II is disposed in a connecting passage between the heat pipe 1 and the heat pipe II; the purpose of the setting is: fluid from the hair The heat pipe I or the water inlet flows to the heat pipe II and cannot flow back. The upper end of the heat pipe I is provided with a check valve III; the purpose of this arrangement is that fluid flows from the heat pipe I to the steam separator without being countercurrent.

The water distribution valve in the technical solution is provided with a return port connected to the return pipe, and the water separated in the steam separator is flowed to the heat pipe II through the return pipe. The advantage of this arrangement is that the boiling water separated in the steam separator is not returned to the storage tank and is combined with the cold water, but flows directly into the heating pipe II to be reheated to generate steam, which also makes the technical solution Played the goal of energy saving.

The check valve 1 described in the present technical solution is disposed at the bottom end of the heat pipe 1.

The upper end of the heat pipe 1 in the present technical solution is provided with a check valve III.

A check valve III is provided at the steam outlet port in the steam separator or the slit of the baffle in the steam separator in the technical solution.

Also included in the technical solution is a detecting device for detecting the position of the liquid in the heat pipe 1.

A household electric steamer includes a steaming chamber, a water storage tank, and a steam generating device, wherein the steaming chamber is in communication with the steam generating device through a gas pipe, and the water storage tank is connected to the steam generating device through a water inlet pipe ( The water storage tank may not be sealed, and may not be disposed at a position above the middle of the heating pipe.). The steam generating device comprises a water dividing valve and a return pipe (the lower end of the return pipe can communicate with the water dividing valve or can communicate with the water storage tank), at least one heat pipe, a steam separator, and a control circuit. The heat pipe is disposed between the steam separator and the water dividing valve, wherein the water dividing valve is provided with a water inlet, and the water dividing valve is further provided with a control fluid flowing from the water inlet to the water inlet A one-way valve I of the heat pipe; the heat pipe includes at least one heat-generating pipe I that intermittently generates heat.

A method of controlling a steam generating device includes the following steps:

a, the water passes through the water inlet and presses the check valve I into the heating pipe I;

b, the control circuit turns on the heating power of the heating pipe 1, and the timer starts counting; at this time, the heating pipe I starts heating, the pressure in the heating pipe I increases, and the one-way valve I is closed;

c. When the count value of the timer reaches the preset value T1, the control circuit cuts off the heating power of the heat pipe I; at this time, the pressure in the heat pipe I is lowered and a negative pressure is generated, and the fluid presses the check valve I and flow to the heating tube I;

d. When the count value of the timer reaches the preset value T2, the control circuit turns on the heating power of the heat pipe 1.

The preset value T1 is determined according to the water consumption speed of the heat pipe I, and the preset value T2 is determined according to the water absorption speed of the heat pipe I to ensure that the heat pipe I does not dry. There is no water overflow to achieve the purpose of adaptive water supply of the steam generating device (at program control, a program control T1 + T2 can be programmed for an intermittent working time cycle of the heat pipe I).

The upper end of the heat pipe 1 in the present technical solution is provided with a check valve III, and the fluid in the heat pipe I presses the check valve III to flow to the steam separator.

In the technical solution, a heat generating tube II with continuous heat generation is further disposed; a check valve II is disposed in the water dividing valve, and the fluid presses the check valve II to the heat generating tube II.

In the technical solution, before step a, a step of detecting whether there is water in the heat pipe I is further included. The step of detecting whether the heat pipe 1 is dry or not by setting a temperature limiter on the heat pipe 1 to determine whether there is water in the heat pipe I; or detecting by a combination of a magnetic float and a reed switch Whether or not there is water in the heat pipe 1.

The beneficial effects of the invention are:

(1) Since the control circuit controls the intermittent heating of the heat pipe I, a change of high pressure and negative pressure is continuously formed in the heat pipe I, causing the check valve 1 to be closed and opened correspondingly, and the water is also It is intermittently sucked into the heat pipe 1, that is, the heat pipe I is continuously supplied with water.

(2) Since the times T1 and T2 of the intermittent heating program are determined according to the water consumption speed and the water absorption speed of the heat pipe 1, the steam generating device can adaptively supply water without providing a water pump, and also makes the steam generating device The structure is simpler and the price is cheaper. This adaptive water supply will not cause energy waste and save energy.

(3) Compared with the prior art, the household electric steamer made by the steam generating device provided by the invention has energy saving, adaptive water supply, low price, no need for sealing between the water storage tank and the steam-water separating device, and the appearance And the internal structure is convenient in design and convenient to use.

DRAWINGS

Figure 1 is a perspective view of a first embodiment of the present invention;

Figure 2 is a transverse full cross-sectional view of the first embodiment of the present invention;

Figure 3 is a perspective view showing the structure of the base in the first embodiment of the present invention;

Figure 4 is a longitudinal step sectional view of the first embodiment of the present invention;

Figure 5 is a longitudinal step sectional view of a second embodiment of the present invention;

Figure 6 is a longitudinal step sectional view of a third embodiment of the present invention;

Figure 7 is a longitudinal step sectional view of Embodiment 4 of the present invention;

Figure 8 is a transverse full cross-sectional view of a fourth embodiment of the present invention;

Figure 9 is a perspective view showing the structure of the base in the fourth embodiment of the present invention;

Figure 10 is a schematic view showing the fifth embodiment of the present invention.

The description of the structure of each part in the drawing:

1-water valve, 11-inlet, 12-check valve I, 13-check valve II, 14-return port, 15-drain port, 2-return pipe, 3-steam separator, 31-seal cap , 32-base, 33-outlet interface, 34-return hole, 35-check valve III, 36-connector I, 37-connector II, 38-baffle, 41-heat pipe I, 42-heat pipe II, 5--steaming chamber, 6-storage tank, 7-steam generating device.

detailed description

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly, the present invention will be further described in detail below with reference to the embodiments and the accompanying drawings.

Specific embodiment 1

As shown in Fig. 1, the steam generating device includes a water dividing valve 1, a return pipe 2, a steam separator 3, and three heat pipes I41. The heat generating tube I41 is a heat generating tube that intermittently generates heat, and the time during which the heat generating tube I41 generates heat is determined according to the water consumption speed of the heat generating tube I41. The water dividing valve 1 is a six-way water dividing valve, and includes a water inlet 11, a return port 14, a drain port 15, and three water supply ports connected to the lower end of the heat pipe I41. (The selection of the water distribution valve 1 is selected according to the number of installations of the heat pipe I41. When the number of the heat pipes I41 is five, the water distribution valve 1 selects the eight-way water distribution valve. , that is, the number of the water supply ports is also five.)

As shown in FIG. 2, the steam-water separator 3 includes a sealing cover 31 and a base 32. The sealing cover 31 forms a cavity on the top end of the base 32, and the sealing cover 31 has an arc shape in cross section. The upper end of the return pipe 2 is connected to a return hole 34 provided on the base 32, the lower end of the return pipe 2 is connected to the return port 14, and the return port 14 is disposed at the water dividing valve On the middle side of 1 , water in the steam separator 3 flows through the return pipe 2 to the heat pipe I41.

As shown in FIG. 3, the base 32 further includes a steam outlet interface 33, a connecting seat I36, and a baffle 38. The steam outlet interface 33 and the connecting seat I36 are disposed on the same side of the steam separator 3, A return hole 34 is provided on the other side of the steam separator. The baffle 38 is disposed between the steam outlet interface 33 and the connecting seat I36, and the steam outlet interface 33 communicates with the connecting seat I36 through a slit opened in the baffle 38. The connecting seat I36 and the return hole 34 are on a bottom plane, and the steam outlet interface 33 is disposed above the connecting seat I36 and the return hole 34.

As shown in FIG. 4 (FIG. 4 is a stepped view of the steam generating device according to the cross-sectional direction shown in FIG. 3), the sealing cover 31 is provided with a baffle plate matched with the baffle 38, the baffle plate The slit is not opened (it is also possible to open the slit). The advantage of not opening the slit is that the water droplets condensed on the sealing cover 31 do not flow along the slit to the steam outlet port 33. The water dividing valve 1 is provided with a check valve I12, and the check valve I12 is disposed at the water inlet 11, and the water flows through the water inlet 11 to open the check valve I12, and cannot flow backward. The upper end of the heat pipe I41 is fixedly disposed in the connecting seat I36.

The control method of the steam generating device according to the first embodiment includes the following steps:

(1) The control circuit detects whether or not there is water in the heat pipe I41. That is, a temperature limiter is provided at the upper end of the heat pipe I41 to detect whether the heat pipe I41 is dry or not. If the heat pipe I41 has no water at the set position of the temperature limiter, the temperature of the position is It will rise, and when it rises to the temperature set by the temperature limiter, the temperature limiter operates to cause the control circuit to cut off the heating power.

In practical applications, it is also possible to detect whether there is water in the heating pipe I41 by a combination of a magnetic float and a reed switch, and provide a pipe communicating with the heating pipe I41, and a magnetic float is arranged in the pipe. a baffle is fixedly disposed in the pipe, and a reed pipe is disposed on an outer side of the pipe, and the baffle and the reed pipe are disposed at a level equal to a low water level of the heat pipe I41 When the water in the heating pipe I41 is at a low water level, the magnetic float in the pipe is also located at a low water level and is blocked at a low water level, and the reed switch operates to cause the control circuit to cut off the heating power.

(2) Water flows in from the water inlet 11, presses the check valve I12, and flows into the heat pipe I41 until the liquid level of the water in the heat pipe I41 is equal to the liquid level of the water in the water tank Qi

(3) The control circuit turns on the heating power of the heating pipe I41, and the timer starts counting; at this time, the heating pipe I41 starts heating, the pressure in the heating pipe I41 increases, and the check valve I12 closure;

(4) When the count value of the timer reaches the preset value T1, the control circuit cuts off the heating power of the heat pipe I41; at this time, the pressure in the heat pipe I41 is lowered and a negative pressure is generated, and the water pressure is opened. The check valve I12 is concurrently flowed to the heat pipe I41;

(5) When the count value of the timer reaches the preset value T1, the control circuit turns on the heating power of the heat pipe I (41).

The preset value T1 is determined according to the water consumption speed of the heat pipe I41 to ensure that the heat pipe I41 does not dry or water overflow, and achieves the purpose of adaptive water supply of the steam generating device.

Specific embodiment 2

This embodiment is an optimization of the solution in the first embodiment, and the main difference is as shown in FIG. 5 (FIG. 5 is a stepped view of the steam generating device according to the cross-sectional direction shown in FIG. 3), the soda water A check valve III35 is further disposed in the separator 3, and the check valve III35 is disposed at the steam outlet port 33 or at the slit of the baffle 38. The advantage of this arrangement is that the heat pipe I is not heated. When water is absorbed, the steam does not flow back to the heat pipe I, so that the heat pipe I absorbs too little water.

Concrete embodiment 3

The main difference of this embodiment with respect to the solution in the second embodiment is as shown in FIG. 6 (FIG. 6 is a stepwise sectional view of the steam generating device according to the cross-sectional direction shown in FIG. 3), the check valve I12 The check valve III35 is disposed at the bottom end of the heat pipe I41, and the check valve III35 is disposed at an upper end of the heat pipe I41. The heat pipe I41 in this embodiment may be heated asynchronously.

According to the control method of the steam generating device according to the above embodiment, the following steps are included:

(1) The control circuit detects whether or not there is water in the heat pipe I41. That is, a temperature limiter is provided at the upper end of the heat pipe I41 to detect whether the heat pipe I41 is dry or not. If the heat pipe I41 has no water at the set position of the temperature limiter, the temperature of the position is It will rise, and when it rises to the temperature set by the temperature limiter, the temperature limiter operates to cause the control circuit to cut off the heating power.

In practical applications, it is also possible to detect whether there is water in the heating pipe I41 by a combination of a magnetic float and a reed switch, and provide a pipe communicating with the heating pipe I41, and a belt is arranged in the pipe. a magnetic float, a baffle is fixedly disposed in the tube, a reed switch is disposed on an outer side of the tube, and the baffle and the reed switch are disposed at a low water level with the heat pipe I41 In the same manner, when the water in the heating pipe I41 is at a low water level, the magnetic float in the pipe is also located at a low water level and is blocked at a low water level, and the reed switch operates to cut off the heating of the control circuit. power supply.

(2) water flows in from the water inlet 11, and the check valve I12 and the check valve III35 are pushed open, and flows into the heat pipe I41 until the liquid level and the water in the heat pipe I41 The level of water in the water tank is flush;

(3) The control circuit turns on the heating power of the heating pipe I41, and the timer starts counting; at this time, the heating pipe I41 starts heating, the pressure in the heating pipe I41 increases, and the check valve I12 closes. ;

(4) When the count value of the timer reaches the preset value T1, the control circuit cuts off the heating power of the heat pipe I41; at this time, the pressure in the heat pipe I41 is lowered and a negative pressure is generated, the one-way The valve III35 is closed, the water pressure opens the one-way valve I12 and flows to the heating pipe I41;

(5) When the count value of the timer reaches the preset value T1, the control circuit turns on the heating power of the heat pipe I (41).

The preset value T1 is determined according to the water consumption speed of the heat pipe I41 to ensure that the heat pipe I41 does not dry or water overflow, and achieves the purpose of adaptive water supply of the steam generating device.

Concrete embodiment 4

As shown in FIG. 7 (FIG. 7 is a stepwise sectional view of the steam generating device according to the cross-sectional direction shown in FIG. 9), the steam generating device includes a water dividing valve 1, a return pipe 2, a steam separator 3, and a hair piece. Heat pipe I41, two heat pipes II42. The heat generating tube I41 is a heat generating tube that intermittently generates heat, and the heat generating tube II42 is a heat generating tube that continuously generates heat, and the time during which the heat generating tube I41 generates heat is determined according to the water consumption speed of the heat generating tube II42. The upper end of the heat pipe I41 is provided with a check valve III35 (the check valve III35 is disposed at a highest water level position that can be reached when the heat pipe II42 is operated), and the fluid in the heat pipe I41 is pressed open. The check valve III35 flows to the steam separator 3 and cannot flow back. The water dividing valve 1 is provided with a one-way valve I12 and a one-way valve II13. The one-way valve I12 is disposed at the water inlet 11, and water is pressed through the water inlet 11 to open the check valve I12. It is not possible to flow back to the heat pipe I41 or the heat pipe II42. The check valve II13 is disposed in a connecting passage between the heat generating tube I41 and the heat generating tube II42, and the water in the heat generating tube I41 is opened to the one-way valve II13 to the heat generating tube II42 or Water flows through the water inlet port 11 to open the check valve II13 to the heat pipe II42, and cannot flow back. The water dividing valve 1 is a six-way water dividing valve, and includes a water inlet 11, a return port 14, a drain port 15, and three water supply ports connected to the lower end of the heat pipe I41. (The selection of the water distribution valve 1 is selected according to the number of installations of the heat pipe I41. When the number of the heat pipes I41 is five, the water distribution valve 1 selects the eight-way water distribution valve. , that is, the number of the water supply ports is also five.)

As shown in FIG. 8, the steam separator 3 includes a sealing cover 31 and a base 32. The sealing cover 31 forms a cavity on the top end of the base 32, and the sealing cover 31 has an arc shape in cross section. The upper end of the return pipe 2 is connected to a return hole 34 provided on the base 32, the lower end of the return pipe 2 is connected to the return port 14, and the return port 14 is disposed at the water dividing valve On the middle side of 1 , water in the steam separator 3 flows through the return pipe 2 to the heat pipe II42.

As shown in FIG. 9, the base 32 further includes a connecting base I36 connecting the heating tube I41, a connecting base II37 connecting the heating tube II42, and an outlet interface 33. The connecting base II37 and the connecting base I36 Set in different planes, the connector II37 is disposed above the connector I36. The steam outlet port 33 is disposed on the same side of the steam separator 3 with the connecting seat I36 and the connecting seat II37, and the return hole 34 is disposed on the other side of the steam separator. The baffle 38 is disposed between the steam outlet interface 33 and the connecting seat I36 and the connecting seat II37, and the steam outlet interface 33 and the connecting seat I36 and the connecting seat II37 pass the block. The slits opened in the plate 38 are in communication.

The control method of the steam generating device according to the fourth embodiment includes the following steps:

(1) The control circuit detects whether there is water in the heat pipe II42. That is, a temperature limiter is disposed at the upper end of the heat pipe II42 to detect whether the heat pipe II42 is dry or not. If the heat pipe II42 has no water at the set position of the temperature limiter, the temperature of the position is It will rise, and when it rises to the temperature set by the temperature limiter, the temperature limiter operates to cause the control circuit to cut off the heating power.

In practical applications, it is also possible to detect whether there is water in the heat pipe II42 by a combination of a magnetic float and a reed switch, and provide a pipe communicating with the heat pipe II42, and a magnetic band is arranged in the pipe. a float, a baffle is fixedly disposed in the pipe, a reed pipe is disposed on an outer side of the pipe, and the baffle and the reed pipe are disposed at a low level of the heat pipe II42 When the water in the heat pipe II42 is at a low water level, the magnetic float in the pipe is also located at a low water level, and the reed switch operates to cause the control circuit to cut off the heating power.

(2) water flows in from the water inlet 11, and the check valve I12, the check valve II13, and the check valve III35 are pressed open, and water flows into the heat pipe I41 and the heat pipe II42. Until the liquid level of the water in the heat pipe I41 and the heat pipe II42 is flush with the liquid level of the water in the water storage tank;

(3) The control circuit is powered on, the heating tube I41 and the heating tube II42 start to heat up, and the timer starts counting; at this time, the pressure in the heating tube I41 increases, and the one-way valve I12 is closed;

(4) When the count value of the timer reaches the preset value T1, the control circuit cuts off the heating power of the heat pipe I41; at this time, the pressure in the heat pipe I41 is lowered and a negative pressure is generated, the one-way The valve II13 and the one-way valve III35 are closed, the one-way valve I12 is pressed open, water is sucked into the heating pipe I41;

(5) When the count value of the timer reaches the preset value T2, the control circuit turns on the heating power of the heat pipe I (41), and the pressure inside the heat pipe I41 increases, so that the check valve I12 Closing, the one-way valve II13 and the one-way valve III35 are pressed apart, water in the heat-generating tube I41 is pressed into the heat-generating tube II42, and the heat-generating tube I41 and the heat-generating tube II42 are generated. The steam flows into the steam separator 3.

The preset value T1 and the preset value T2 are determined according to the water consumption speed of the heat pipe II42 to ensure that the heat pipe II42 does not dry or overflow, and the steam generating device is adaptive. The purpose of the water supply (when the program is controlled, a program can be programmed such that T1 + T2 is a cycle time of the heat pipe I, and a program can be programmed such that T2 is a cycle time of the heat pipe I.).

The return pipe (23) of the steam-water separator (3) and the return port (14) of the water-discharging valve (1) are disposed with the return pipe (2), and the return port (14) is disposed at the water-distributing valve The middle portion of the side surface causes 100% of the water in the steam separator 3 to flow back into the heat pipe II42, thereby contributing to energy saving.

Specific embodiment 5

The invention will now be further explained by the embodiment in which the steam generating device 7 of the present invention is used on a domestic electric steamer.

As shown in FIG. 10, the electric steamer of the present invention includes a steaming chamber 5, a water storage tank 6, and a steam generator 7, and the steaming chamber 5 communicates with the steam generating device 7 through a gas pipe, the water storage tank 6 is connected to the steam generating device 5 through a water inlet pipe. In the present embodiment, the steam generating device 7 adopts the implementation of the steam generating device provided in the fourth embodiment, but in actual production, any one of the first, second, third, and fourth embodiments may be adopted as needed. The solution of the steam generating device 7 is described.

In the present invention, the water storage tank 6 may be disposed at any position (i.e., not required to be disposed above the middle portion of the heat pipe), and the water storage tank 6 does not require sealing.

Claims (13)

1. A steam generating device comprises a water dividing valve (1), a return pipe (2), at least one heat pipe, a steam separator (3), a control circuit, and the heat pipe is disposed in the steam separator (3) Between the water dividing valve (1) and the water dividing valve (1), a water inlet (11) is provided, which is characterized in that: The water dividing valve (1) is further provided with a check valve I (12) for controlling fluid flow from the water inlet (11) to the heat pipe; the heat pipe includes at least one heat generating pipe I intermittently heated (41).
2. A steam generating device according to claim 1, characterized in that said one-way valve I (12) is arranged in said water inlet (11).
3. The steam generating device according to claim 2, wherein said heat generating pipe further comprises at least one heat-operating pipe II (42) that is continuously operated; and said water-discharging valve (1) is provided with a one-way valve II ( 13) The check valve II (13) is disposed in a connecting passage between the heat pipe I (41) and the heat pipe II (42); the upper end of the heat pipe I (41) is provided Check valve III (35).
4. The steam generating device according to claim 3, characterized in that: the water dividing valve (1) is provided with a return port (14) connected to the return pipe (2), and the steam separator (3) The separated water flows through the return pipe (2) to the heat pipe II (42).
5. A steam generating device according to claim 1, wherein said one-way valve I (12) is provided at a bottom end of said heat pipe I (41).
6. The steam generating device according to claim 5, characterized in that the upper end of the heat pipe I (41) is provided with a check valve III (35).
7. The steam generating device according to claim 1, characterized in that the steam outlet (33) in the steam separator (3) or the slit of the baffle (38) in the steam separator (3) A check valve III (35) is provided.
8. A steam generating apparatus according to claim 7, wherein said steam generating means further comprises detecting means for detecting the position of the liquid in said heat generating pipe I (41).
9. A household electric steamer including the steam generating device.
10. A method of controlling a steam generating device includes the following steps:

    a, the water passes through the water inlet (11) and presses the check valve I (12) into the heating pipe I (41);

    b, the control circuit turns on the heating power of the heating pipe I (41), and the timer starts counting; at this time, the heating pipe I (41) starts heating, and the pressure in the heating pipe I (41) increases. The check valve I (12) is closed;

    c. When the count value of the timer reaches the preset value T1, the control circuit cuts off the heating power of the heat pipe I (41); at this time, the pressure in the heat pipe I (41) is lowered and a negative pressure is generated, and the fluid pressure is Opening the one-way valve I (12) and flowing to the heating pipe I (41);

    d. When the count value of the timer reaches the preset value T2, the control circuit turns on the heating power of the heat pipe I (41).
11. The control method of a steam generating device according to claim 10, characterized in that the upper end of the heat pipe I (41) is provided with a check valve III (35), and the fluid pressure in the heat pipe I (41) The check valve III (35) is opened to flow to the steam separator (3).
12. The control method of a steam generating device according to claim 11, wherein the method further comprises a heat generating tube II (42) that continuously generates heat; and a check valve II (13) is disposed in the water dividing valve (1). The fluid presses the one-way valve II (13) to the heat pipe II (42).
13. A method of controlling a steam generating apparatus according to claim 12, further comprising the step of detecting whether or not water is present in said heat generating pipe I (41) before said step a.

Images