CN215570363U - Steam generator and kitchen appliance with same - Google Patents

Abstract

A steam generator comprising: a steam generating device having a steam generating chamber therein; the steam generating device comprises a buffer box (3), wherein the buffer box (3) is hollow and arranged outside a steam generating cavity, the buffer box (3) is provided with a steam inlet (34), a steam outlet (32) and a water outlet (33) which are communicated with the inside of the buffer box, the steam inlet (34) and the water outlet (33) are communicated with the inside of the steam generating device, the water outlet (33) is positioned below the steam inlet (34) and the steam outlet (32), and the water outlet (33) is arranged to enable water in the buffer box (3) to flow into the steam generating cavity, so that the water level in the buffer box (3) is lower than the positions of the steam inlet (34) and the steam outlet (32). The application also discloses a kitchen appliance with the steam generator. Compared with the prior art, this application need not to change the inner structure of current steam generation device, can reduce the steam water content.

Description

Steam generator and kitchen appliance with same

Technical Field

The utility model belongs to the technical field of kitchen appliances, and particularly relates to a steam generator and a kitchen appliance with the same.

Background

At present, kitchen appliance with steam function, if the steam ager, evaporate roast all-in-one, evaporate roast little all-in-one, all be equipped with steam generator in the steam disinfection cabinet, current steam generator is mostly instant heating type steam generator, and generally adopt bottom heating pipe + upper portion water containing tank structure, heat and produce steam through the water of heating pipe in to the water containing tank, the steam of production flows and gets into kitchen appliance's inner bag from steam generator and heats food or disinfect to article. When the steam generator is used, water in the steam generator is boiled violently, and the water splashes and finally enters the inner container, so that more condensed water in the inner container is caused.

In order to overcome the above defects, the utility model patent application with application number CN201811476601.4, entitled "steam generator and steam box equipped with the steam generator" (application publication number CN111271701A), discloses a steam generator, which includes a base and an upper cover mounted on the base, wherein the upper cover is provided with an air outlet, a flow blocking member is mounted inside the upper cover, the flow blocking member is close to the air outlet, the bottom of the flow blocking member forms a flow blocking surface inclined towards the air outlet from top to bottom, a steam inlet gap is left between the upper part of the flow blocking member and the upper cover, and a steam reflux gap is left between the lower part of the flow blocking member and the upper cover. This steam generator is through setting up the fender stream spare that is close to the gas outlet in that the upper cover is inside, and the water boiling produces steam and flows through the fender stream face of slope earlier, and the steam admission clearance between rethread fender stream board and the steam generator upper cover flows to the gas outlet, has prolonged the steam circulation route, and fender stream board certain degree has reduced the comdenstion water that flows to the gas outlet to avoid in the interior steam entering inner bag of boiling of evaporimeter. However, the steam generator has the following technical problems to be solved: firstly, because a flow blocking piece needs to be arranged in the steam generator, the internal structure of the steam generator needs to be changed; secondly, because the heating pipe is in single-side contact with the base, the heating area is small, the heat conduction efficiency is not high, and the time for generating steam is increased; thirdly, because the heating pipe is arranged at the bottom of the base, scale is easy to accumulate on the inner surface of the base after long-term use, and further the heat efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the present invention is to provide a steam generator capable of reducing the water content of steam without changing the internal structure of the existing steam generating device, in view of the current state of the art.

The second technical problem to be solved by the utility model is to provide a steam generator capable of increasing the steam generation speed.

A third technical problem to be solved by the present invention is to provide a steam generator capable of reducing the risk of scale generation.

The fourth technical problem to be solved by the utility model is to provide a kitchen appliance with the steam generator.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: a steam generator comprising:

a steam generating device having a steam generating chamber therein;

it is characterized by also comprising:

the buffer box is hollow and arranged outside the steam generation cavity, the buffer box is provided with a steam inlet, a steam outlet and a water outlet which are communicated with the inside of the buffer box, the steam inlet and the water outlet are communicated with the inside of the steam generation device, the water outlet is positioned below the steam inlet and the steam outlet, and the water outlet is arranged to enable water in the buffer box to flow into the steam generation cavity, so that the water level in the buffer box is lower than the position height of the steam inlet and the steam outlet.

The steam generating device can refer to the existing structural design, such as a bottom heating pipe and an upper water containing tank structure. In order to further solve the second technical problem, preferably, the steam generating device includes a water inlet pipe and a heating element for heating water in the water inlet pipe, the water inlet pipe is hollow to form the steam generating chamber, the water inlet pipe has at least two pipe orifices, which are a first pipe orifice and a second pipe orifice respectively, and the first pipe orifice and the second pipe orifice are respectively arranged corresponding to the water outlet and the steam inlet of the buffer box;

the heating element acts on at least part of the water inlet pipe, and the buffer box has a water inlet communicated with the interior thereof.

For further solving the above-mentioned third technical problem, preferably, the heating member is the tube-shape and overlaps and establish the periphery of inlet tube, and the inner wall of heating member with the pipe wall of inlet tube is laminated mutually.

Preferably, the heating member includes a heat-conducting tube with thermal conductivity, and a heating member acting on the heat-conducting tube and used for heating the heat-conducting tube, the heat-conducting tube is sleeved on the periphery of the water inlet tube, and the inner wall of the heat-conducting tube is attached to the tube wall of the water inlet tube. Therefore, the contact area between the heat-conducting cylinder and the water inlet pipe is large, heat transfer is uniform, partial accumulation of scale is avoided, and heat conduction efficiency is improved; on the other hand, the service life of the heating body can be prolonged.

Further, the heating body is a heating pipe spirally wound in the wall of the heat conducting cylinder. So, can improve the area of contact of heating member and heat-conducting cylinder, promote the thermal efficiency.

The heating body is characterized by further comprising a temperature sensor and a controller for receiving signals sent by the temperature sensor, wherein the temperature sensor is arranged on the heat conducting cylinder, and the controller is connected with the heating body through electric signals.

In order to further improve the thermal efficiency, the heat-conducting device also comprises a heat-conducting column with heat storage and heat transfer functions, wherein the heat-conducting column is arranged in the water inlet pipe and forms a channel for water to flow through with the inner pipe wall of the water inlet pipe.

In order to increase the contact area between the heat-conducting column and the water in the channel, the cross section of the heat-conducting column is preferably cross-shaped.

Preferably, the inside of the heat conduction column is hollow to form a cavity, and a functional part with heat storage and heat transfer functions is arranged in the cavity.

The heating element is characterized by further comprising a temperature sensor and a controller for receiving signals sent by the temperature sensor, wherein the temperature sensor acts in the cavity of the heat-conducting column, and the controller is electrically connected with the heating element.

In each of the above solutions, in order to enable the water flowing out from the steam inlet to flow back into the water inlet pipe, preferably, the water outlet and the steam inlet are both located on the bottom wall of the buffer box, and at least part of the inner bottom surface of the buffer box is an inclined surface which is obliquely arranged, and the steam inlet is located on the upper part of the inclined surface. Therefore, the condensed water and the water sprayed from the steam inlet can flow back to the water outlet along the inclined plane and then flow into the water inlet pipe.

Preferably, the steam outlet is located on the top wall of the buffer box, and the projection of the steam outlet and the projection of the steam inlet on the water surface are mutually staggered. Thus, the steam entering from the steam inlet can be prevented from being directly sprayed out from the steam outlet.

Further, the water inlet is located on the roof of buffer box, and the water inlet corresponds the delivery port setting.

Preferably, the water inlet pipe is U-shaped, and has a first straight pipe section, a second straight pipe section and a connecting section, wherein the first straight pipe section and the second straight pipe section are vertically arranged and distributed side by side, the connecting section is connected with the bottom ends of the first straight pipe section and the second straight pipe section, the first pipe opening is located at the top end of the first straight pipe section, and the second pipe opening is located at the top end of the second straight pipe section. Because the inlet tube is U type structure, when the water of inlet tube one side leads to the water level to descend because of the evaporation, the opposite side of inlet tube can be in time make-up water for the liquid level of inlet tube both sides is in the state of flushing all the time. Thereby realizing automatic water supplement. Of course, the inlet pipe may also be V-shaped, arc-shaped or W-shaped.

Preferably, the inner diameter of the first straight pipe section is larger than that of the second straight pipe section, and the heating element is arranged on the second straight pipe section of the water inlet pipe. The first straight pipe section has the following advantages that the inner diameter is larger than that of the second straight pipe section: 1. enough water can be stored in the first straight pipe section, and the second straight pipe section can be supplemented with water in time; 2. the accurate control of the water quantity in the second straight pipe section can be realized; 3. when second straight tube section evaporation a certain amount of water, compare current steam generator, this application water level change is little, has reduced the frequent switch of water pump, valve, and then promotes user experience.

Preferably, the bottom of the water inlet pipe is connected with a drain pipe communicated with the inside of the water inlet pipe.

The technical scheme adopted by the utility model for solving the fourth technical problem is as follows: a kitchen appliance having a steam generator as described above.

Preferably, the kitchen appliance is a steam box, an oven, a microwave oven, a disinfection cabinet or an integral combination of at least two of them.

Compared with the prior art, the utility model has the advantages that: the buffer box is arranged outside the steam generating cavity, the buffer box is provided with the steam inlet, the steam outlet and the water outlet which are communicated with the steam generating cavity, and the steam inlet and the water outlet are communicated with the steam generating cavity, so that steam from the steam generating cavity and water splashed in the boiling process firstly enter the buffer box, gas-liquid separation is realized in the buffer box, the separated steam flows out from the steam outlet of the buffer box, and condensed water returns to the steam generating cavity from the water outlet, so that the water vapor boiled in the steam generating cavity is effectively prevented from entering the inner container of the kitchen appliance, and the water quantity of the condensed water in the inner container is further reduced; the buffer box is arranged outside the steam generating cavity, so that the structure in the steam generating cavity does not need to be changed, and the steam generating device can be realized on the basis of the conventional steam generating device; and the structure is simple, and the implementation is convenient.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of another view according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a first embodiment of the present invention;

FIG. 4 is an exploded perspective view of a first embodiment of the present invention;

FIG. 5 is a schematic structural diagram according to a second embodiment of the present invention;

FIG. 6 is a cross-sectional view of a second embodiment of the present invention;

fig. 7 is a partial structural view of a water inlet pipe with a heating element mounted thereon according to a second embodiment of the present invention;

fig. 8 is a cross-sectional view of fig. 7.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

The first embodiment is as follows:

referring to fig. 1 to 4, a first preferred embodiment of a steam generator and a kitchen appliance having the same according to the present invention is shown, wherein the kitchen appliance is a steam box, a steam oven, a disinfection cabinet, etc., the steam generator is disposed in the kitchen appliance, and the position and connection manner of the steam generator in the kitchen appliance can be designed according to the prior art. The steam generator includes a water inlet pipe 1, a heating member 2, a buffer case 3, a temperature sensor 4, and a controller.

Wherein, inlet tube 1 is the U type structure of vertical setting, and the top both ends of this inlet tube be respectively with the inside first mouth of pipe 11, the second mouth of pipe 12 that is linked together of inlet tube. Specifically, this inlet tube 1 has vertical setting and the first straight tube section 1a, the second straight tube section 1b that distribute side by side and connect the linkage segment 1c of the bottom of first, second straight tube section, and first mouth of pipe 11 is located the top of first straight tube section 1a, and second mouth of pipe 12 is located the top of second straight tube section 1b, and the internal diameter of first straight tube section 1a is greater than the internal diameter of second straight tube section 1 b. The bottom of the water inlet pipe 1 is connected with a water outlet pipe 13. Similarly, a temperature sensor can be arranged in the water inlet pipe 1 and used for detecting the temperature of water in the water inlet pipe 1.

The heating element 2 is arranged on the second straight section 1b of the inlet pipe 1 for heating the water in the inlet pipe 1. The heating element 2 comprises a heat-conducting cylinder 21 with heat conductivity and a heating body 22 which is used for heating the heat-conducting cylinder 21 and acts on the heat-conducting cylinder 21, the periphery of the water inlet pipe 1 is sleeved with the heat-conducting cylinder 21, and the inner wall of the heat-conducting cylinder 21 is attached to the pipe wall of the water inlet pipe 1. The heating body 22 is a heating pipe spirally wound in the wall of the heat conducting cylinder 21. In this embodiment, the heat conducting tube 21 is made of an aluminum block, the wall of the heat conducting tube is a solid structure, the spiral portion of the heating tube is embedded in the solid wall, and two ends of the heating tube are exposed outside the heat conducting tube 21. Therefore, the heat generated by the heating pipe can be transferred to the water inlet pipe 1 through the heat conducting cylinder 21, and then the water in the water inlet pipe 1 is heated. The temperature sensor 4 is arranged on the heat-conducting cylinder 21, and the controller is electrically connected with the heating body 22 and is used for receiving the signal sent by the temperature sensor 4 and controlling the heating body 22 to work according to the received signal.

In this embodiment, the pipe body of the portion of the second straight pipe section 1b where the heating member 2 is located is detachably connected to the pipe body outside the heating member 2, such as by sleeving, screwing, and the like, so that the pipe body where the heating member 2 is located can be replaced conveniently.

The interior of the buffer box 3 is hollow and arranged on the water inlet pipe 1, the top wall of the buffer box 3 is provided with a water inlet 31 and a steam outlet 32 which are communicated with the interior of the buffer box, the bottom wall of the buffer box 3 is provided with a water outlet 33 and a steam inlet 34 which are communicated with the interior of the buffer box, and the water outlet 33 and the steam inlet 34 are respectively arranged corresponding to the first pipe orifice and the second pipe orifice of the water inlet pipe 1 and are communicated with the first pipe orifice and the second pipe orifice. In this embodiment, a part of the inner bottom surface of the buffer box 3 is an inclined surface, the steam inlet 34 is located at the upper part of the inclined surface, and the water outlet 33 is located below the steam inlet 34, so that the water sprayed from the steam inlet 34 can flow back into the water outlet 33 along the inclined surface. And the water outlet 33 is arranged to enable the water in the buffer box 3 to flow into the water inlet pipe 1, so that the water level in the buffer box 3 is lower than the height of the steam inlet 34 and the steam outlet 32. Meanwhile, projections of the steam inlet 34 and the steam outlet 32 on the horizontal plane are staggered with each other in the embodiment, so that steam entering the buffer box 3 from the steam inlet 34 cannot directly leave from the steam outlet 32, and when the steam entering the buffer box 3 touches the inner wall of the buffer box 3, water in the steam is condensed, and the water content of the steam is reduced. The buffer case 3 may be a single unit, or may be formed by detachably connecting an upper unit and a lower unit.

The working principle of the steam generator is as follows:

in the initial state, no water is present in the steam generator. Electrifying the steam generator, starting the heating body 22 to work, and simultaneously injecting water into the steam generator through the water inlet 31 of the buffer box 3, wherein the water level in the first straight pipe section 1a is the same as that in the second straight pipe section 1b because the first straight pipe section 1a is communicated with the second straight pipe section 1 b. After the water injection time Δ T, the water injection is completed, and the water levels of the first straight pipe section 1a and the second straight pipe section 1b reach the set height H.

During the operation of the steam generator, the water in the second straight pipe section 1b is evaporated continuously, and the steam mixed with the water is sprayed into the buffer box 3 from the steam inlet 34 continuously. At the moment, on one hand, water vapor meets the top wall of the buffer box 3, and water vapor separation is realized on the top wall of the buffer box 3 by water; on the other hand, the excessive moisture flows back to the water outlet 33 along with the slope of the bottom wall of the buffer box 3, and then flows back to the first straight pipe section 1 a. In the process of volatilizing the water in the second straight pipe section 1b, the water level in the second straight pipe section 1b is reduced, and the water in the first straight pipe section 1a can be supplemented in time. Since the cross-sectional area of the first straight tube section 1a is much larger than that of the second straight tube section 1b, the water level in the first straight tube section 1a is decreased little when the same moisture is evaporated. When the work is completed, the remaining water in the inlet pipe 1 is discharged through the drain pipe 13.

Example two:

as shown in fig. 5 to 8, a second preferred embodiment of a steam generator and a kitchen appliance having the same of the present invention is substantially the same as the first embodiment, except that the heating member 2 in the present embodiment is a heating film and is wound around the outer wall of the second straight tube section 1 b. And the embodiment also comprises a heat-conducting column 5 with heat storage and heat transfer functions, wherein the heat-conducting column 5 is arranged in the second straight pipe section 1b of the water inlet pipe 1, and a channel 100 for water to flow through is formed between the heat-conducting column 5 and the inner pipe wall of the second straight pipe section 1b of the water inlet pipe 1. In this embodiment, the cross section of the heat-conducting column 5 is cross-shaped. The heat conduction column 5 is hollow inside to form a cavity 50 for accommodating a functional member having heat storage and heat transfer functions, which is a liquid-solid material that is solid at low temperature and liquid at high temperature and has good heat conduction performance in this embodiment.

The temperature sensor 4 acts within the chamber 50 of the heat-conducting post 5 and the controller is in electrical communication with the heating element 2.

The operation principle of the steam generator of the present embodiment is as follows:

the heating film is heated when the steam generator is started. At this time, the liquid-solid material in the heat conduction column 5 is heated and liquefied, and the temperature sensor 4 attached to the heat conduction column 5 detects the temperature of the liquid-solid material. Water injection is carried out through the water inlet 31 at the top of the buffer box 3, and the quick water supplement of the water inlet pipe 1 is realized. The liquid-solid material can store certain energy and can fully contact with water to heat water, so that the heat efficiency is improved, and the steam is quickly generated.

Claims (18)

1. A steam generator comprising:

a steam generating device having a steam generating chamber therein;

it is characterized by also comprising:

the steam generating device comprises a buffer box (3), wherein the buffer box (3) is hollow and arranged outside a steam generating cavity, the buffer box (3) is provided with a steam inlet (34), a steam outlet (32) and a water outlet (33) which are communicated with the inside of the buffer box, the steam inlet (34) and the water outlet (33) are communicated with the inside of the steam generating device, the water outlet (33) is positioned below the steam inlet (34) and the steam outlet (32), and the water outlet (33) is arranged to enable water in the buffer box (3) to flow into the steam generating cavity, so that the water level in the buffer box (3) is lower than the positions of the steam inlet (34) and the steam outlet (32).

2. The steam generator of claim 1, wherein: the steam generating device comprises a water inlet pipe (1) and a heating element (2) used for heating water in the water inlet pipe (1), the interior of the water inlet pipe (1) is hollow to form the steam generating cavity, the water inlet pipe (1) is provided with at least two pipe orifices which are a first pipe orifice (11) and a second pipe orifice (12) respectively, and the first pipe orifice (11) and the second pipe orifice (12) are arranged corresponding to a water outlet (33) and a steam inlet (34) of the buffer box (3) respectively; the heating element (2) acts on at least part of the water inlet pipe (1); the buffer box (3) is provided with a water inlet (31) communicated with the interior of the buffer box.

3. The steam generator of claim 2, wherein: heating member (2) are the tube-shape and overlap and establish the periphery of inlet tube (1), and the inner wall of heating member (2) with the pipe wall of inlet tube (1) is laminated mutually.

4. The steam generator of claim 3, wherein: the heating element (2) comprises a heat-conducting cylinder (21) with heat conductivity and a heating body (22) which is used for heating the heat-conducting cylinder (21) and acts on the heat-conducting cylinder (21), the heat-conducting cylinder (21) is sleeved on the periphery of the water inlet pipe (1), and the inner wall of the heat-conducting cylinder (21) is attached to the pipe wall of the water inlet pipe (1).

5. The steam generator of claim 4, wherein: the heating body (22) is a heating pipe spirally wound in the wall of the heat conducting cylinder (21).

6. The steam generator of claim 4, wherein: the heating device is characterized by further comprising a temperature sensor (4) and a controller used for receiving signals sent by the temperature sensor (4), wherein the temperature sensor (4) is arranged on the heat conducting cylinder (21), and the controller is connected with the heating body (22) through electric signals.

7. The steam generator of claim 3, wherein: the heat-conducting water heater is characterized by further comprising a heat-conducting column (5) with heat storage and heat transfer functions, wherein the heat-conducting column (5) is arranged in the water inlet pipe (1) and forms a channel (100) for water to flow through with the inner pipe wall of the water inlet pipe (1).

8. The steam generator of claim 7, wherein: the cross section of the heat conduction column (5) is cross-shaped.

9. The steam generator of claim 7, wherein: the interior of the heat conducting column (5) is hollow to form a cavity (50), and functional parts with heat storage and heat transfer functions are arranged in the cavity (50).

10. The steam generator of claim 9, wherein: the heat-conducting column is characterized by further comprising a temperature sensor (4) and a controller used for receiving signals sent by the temperature sensor (4), wherein the temperature sensor (4) acts in a cavity (50) of the heat-conducting column (5), and the controller is connected with the heating element (2) through electric signals.

11. The steam generator of any of claims 2 to 10, wherein: the water outlet (33) and the steam inlet (34) are both located on the bottom wall of the buffer box (3), at least part of the inner bottom surface of the buffer box (3) is an inclined surface which is obliquely arranged, and the steam inlet (34) is located on the upper portion of the inclined surface.

12. The steam generator of claim 11, wherein: the steam outlet (32) is positioned on the top wall of the buffer box (3), and the projections of the steam outlet (32) and the steam inlet (34) on the water surface are mutually staggered.

13. The steam generator of claim 11, wherein: the water inlet (31) is located on the top wall of the buffer box (3), and the water inlet (31) is arranged corresponding to the water outlet (33).

14. The steam generator of any of claims 2 to 10, wherein: the water inlet pipe (1) is U-shaped, and has a first straight pipe section (1a) and a second straight pipe section (1b) which are vertically arranged and distributed side by side, and a connecting section (1c) for connecting the bottom ends of the first straight pipe section and the second straight pipe section, wherein the first pipe orifice (11) is positioned at the top end of the first straight pipe section (1a), and the second pipe orifice (12) is positioned at the top end of the second straight pipe section (1 b).

15. The steam generator of claim 14, wherein: the inner diameter of the first straight pipe section (1a) is larger than that of the second straight pipe section (1b), and the heating element (2) is arranged on the second straight pipe section (1b) of the water inlet pipe (1).

16. The steam generator of claim 14, wherein: the bottom of the water inlet pipe (1) is connected with a drain pipe (13) communicated with the inside of the water inlet pipe (1).

17. A kitchen appliance having a steam generator as claimed in any one of claims 1 to 16.

18. The kitchen appliance of claim 17, wherein: the kitchen appliance is a steam box, an oven, a microwave oven, a disinfection cabinet or an integrated combination of at least two of the steam box, the oven, the microwave oven and the disinfection cabinet.

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