CN112754272A

CN112754272A - Steam system and cooking equipment

Info

Publication number: CN112754272A
Application number: CN202110186391.0A
Authority: CN
Inventors: 林章鹏; 陈荣武; 刘敏; 梁少棠; 陈勇军; 麦志文
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2021-05-07

Abstract

The invention relates to the technical field of kitchen appliances, in particular to a steam system and cooking equipment. A steam system, comprising: the steam generator comprises a cavity, and an air outlet is formed in the cavity; the first separation device is arranged in the cavity, is positioned below the air outlet and is suitable for separating water vapor in the cavity; one end of the exhaust pipe is connected with the air outlet, the other end of the exhaust pipe is suitable for being communicated with an inner cavity of the cooking equipment, and the exhaust pipe is suitable for separating water vapor in the exhaust pipe. Through setting up first separator in steam generator's cavity, can carry out steam and water separation to the steam of following steam generator's gas outlet exhaust steam, through set up the blast pipe between steam generator's gas outlet and cooking equipment, and the blast pipe can separate once more the steam that is in it, further reduces the humidity from steam generator exhaust steam, through the dual separation of first separator and blast pipe, can improve dehumidification effect greatly, and then improve user experience degree.

Description

Steam system and cooking equipment

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to a steam system and cooking equipment.

Background

The steam generator is simple in working principle and convenient to manufacture, and is widely applied to the steam oven. Steam generator among the prior art often can be because of its inside saturated water bumping when preparing saturated steam, mix with the drop of water easily in the steam and humidity increases, and steam quality is often not high, and food that such steam supplies to cook out after the steam ager has the surface sticky, and steam humidity's increase leads to the steam ager inner bag in condensation water overstock seriously simultaneously easily, discharges indoor aqueous vapor also can increase, and user experience is not good.

In order to reduce the humidity of steam, the prior art discloses a steam generator, through set up separator in the steam generator cavity, the below of gas outlet to keep apart in the steam generator cavity the drop of water that is mingled with in the steam, and reduce from gas outlet exhaust steam humidity, but only set up separator below the gas outlet, the steam and water separation effect is not good, and the humidity of steam is still great.

Disclosure of Invention

Therefore, the technical problem to be solved by the present invention is to overcome the defect of the prior art that the humidity of the steam supplied to the cooking device by the steam generator is relatively high, so as to provide a steam system and a cooking device capable of improving the humidity reduction effect.

A first aspect of the invention provides a steam system comprising:

the steam generator comprises a cavity, wherein an air outlet is formed in the cavity;

the first separation device is arranged in the cavity, is positioned below the air outlet and is suitable for separating water vapor in the cavity;

one end of the exhaust pipe is connected with the air outlet, the other end of the exhaust pipe is suitable for being communicated with an inner cavity of the cooking equipment, and the exhaust pipe is suitable for separating water vapor in the exhaust pipe.

Optionally, the exhaust pipe is curved.

Optionally, the steam system further comprises:

and the at least one hydrophobic hook is arranged at the bending part of the exhaust pipe.

Optionally, each bent part of the exhaust pipe is provided with two hydrophobic hooks respectively arranged on the upper inner wall and the lower inner wall of the exhaust pipe.

Optionally, the first separating device is a separating pore plate, and a plurality of through holes are formed in the separating pore plate.

Optionally, the separation orifice is spaced above the bottom wall of the cavity and adapted to be submerged in the cavity during normal operation of the steam system.

Optionally, the steam system further includes a second separation device, where the second separation device is disposed at the air outlet and is adapted to separate water vapor at the air outlet.

Optionally, the second separating device includes a bottom wall and a side wall connecting two ends of the bottom wall, the bottom wall and the side wall are enclosed to form a U-shaped cavity, and the bottom wall and the side wall are provided with a plurality of through holes.

Optionally, the steam system comprises:

the heating device is arranged outside the bottom wall of the cavity and comprises at least two heating tubes which are arranged in parallel;

the control device is connected with the heating pipes and is suitable for controlling at least one heating pipe to work when the steam system works.

Optionally, the control device controls the two heating tubes to work at the target temperature simultaneously, and then controls the two heating tubes to work alternately.

Optionally, a water inlet, a water outlet and a water level detection device are arranged on the cavity, and the water level detection device is connected with the control device and is suitable for controlling the water level in the cavity.

Optionally, the steam system further includes a timer, the timer is connected to the control device, and is adapted to control the timer to be started after the water level detection device detects that the water level in the cavity reaches a preset water level, and control the control device to stop injecting water into the cavity after the timer times for a preset time.

A second aspect of the invention provides a cooking apparatus comprising a steam system as described above.

Optionally, the cooking device is provided with an inner cavity, the inner cavity is provided with an air inlet, and the air inlet is connected with the other end of the exhaust pipe;

the inner cavity is provided with an air outlet, the air outlet is provided with a third separation device, and the third separation device is suitable for separating water vapor to be discharged from the inner cavity.

Optionally, the cooking apparatus is a steam oven.

The technical scheme of the invention has the following advantages:

1. according to the steam system provided by the invention, the first separation device is arranged in the cavity of the steam generator, water and steam can be separated from the water and steam discharged from the air outlet of the steam generator, the exhaust pipe is arranged between the air outlet of the steam generator and the cooking equipment, and the exhaust pipe can be used for separating the water and steam in the exhaust pipe again, so that the humidity of the steam discharged from the steam generator is further reduced, and the dehumidification effect can be greatly improved and the user experience degree is further improved through the double separation of the first separation device and the exhaust pipe.

2. According to the steam system provided by the invention, the exhaust pipe is arranged to be of a bent structure, so that when water vapor in the exhaust pipe passes through each bent part of the exhaust pipe in the flowing process, the speed of a water vapor mixture changes suddenly, the water vapor is separated better under the action of centrifugal force and the like because the density of water is far greater than that of pure steam, the steam vapor with better quality is ensured to enter the inner cavity of the cooking equipment, the water vapor is separated through the structure of the exhaust pipe, a separate water vapor separation structure is not required to be arranged, and the structure of the steam system is simpler.

3. According to the steam system provided by the invention, the drainage hook is arranged at the bending part of the exhaust pipe, so that the speed of water vapor at the bending part can be more effectively changed, a better water vapor separation effect is further achieved, high-quality saturated steam entering the inner cavity of the cooking equipment is ensured, and condensed water formed in the inner cavity is reduced.

4. According to the steam system provided by the invention, the two drainage hooks are arranged at each bending part of the drainage pipe and are respectively arranged on the upper inner wall and the lower inner wall of the exhaust pipe, so that the turbulent flow of water vapor at the bending parts can be increased to a greater extent, better speed mutation is realized, and a better water vapor separation effect is achieved.

5. According to the steam system provided by the invention, the first separation device is set as the separation pore plate, the separation pore plate is provided with the plurality of through holes, and the separation pore plate is positioned under the water in the cavity when the steam system normally works, so that large bubbles generated when the water in the cavity is boiled can be changed into small bubbles under the action of the through holes on the separation pore plate, thus the bumping of the water is prevented, the fluctuation degree of the water surface is greatly reduced, and the water drops flowing along with the steam are ensured to be smaller.

6. According to the steam system provided by the invention, the second separation device is arranged at the air outlet, so that the steam to be discharged from the air outlet can be further separated, a triple steam separation effect can be formed by the steam and the first separation device and the exhaust pipe, the steam discharged into the inner cavity of the cooking equipment is further ensured to be saturated steam, and the generation of condensed water is reduced.

7. According to the steam system provided by the invention, the heating device is arranged to comprise at least two heating pipes which are arranged in parallel, the control device firstly controls the two heating pipes to work to the target temperature at the same time, then controls the two heating pipes to work alternately, so that the required temperature in the steam generator is maintained, and the control device controls the single-pipe duty ratio of the heating pipes to work, so that the service life of the heating pipes can be prolonged.

8. According to the steam system provided by the invention, the water level detection device is arranged in the cavity of the steam generator and is connected with the control device, so that the water level in the cavity can be controlled fully automatically, and the normal use of the steam generator is ensured.

9. According to the steam system provided by the invention, the timer connected with the control device is arranged, so that the control device controls the timer to be started after the water level detection device detects that the water level in the cavity reaches the preset water level, and controls the control device to stop injecting water into the cavity after the time counted by the timer reaches the preset time, so that the problem of poor water replenishing effect caused by frequent on-off is prevented, and the service life of equipment is prolonged.

10. According to the cooking equipment provided by the invention, the third separation device is arranged at the air outlet of the inner cavity of the cooking equipment, so that the phenomenon that the steam load at the air outlet is concentrated and the flow rate of the steam is too high, and further a large amount of small water drops are carried and discharged to cause poor user experience can be prevented.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram of the steam system of the present invention;

fig. 2 is a schematic structural view of a cooking apparatus of the present invention;

FIG. 3 is a schematic structural view of a water storage type boiler according to the present invention;

fig. 4 is a sectional view of a water storage type boiler of the present invention;

FIG. 5 is a cross-sectional view of an exhaust pipe of the present invention;

fig. 6 is a schematic structural view of a third separation device of the present invention.

Description of reference numerals:

1-a water tank; 2-a water inlet pump; 3-a water return pump; 4-a steam generator; 5-a control device; 6-an exhaust pipe; 7-an air inlet; 8-an exhaust port; 9-inner cavity; 10-a water inlet; 11-a water outlet; 12-air outlet; 13-a heating tube; 14-water level detection means; 15-a first separation device; 16-a second separation device; 17-a hydrophobic hook; 18-third separation means.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, a first aspect of the present invention provides a steam system comprising: the steam generator comprises a cavity, wherein an air outlet is formed in the cavity; the first separation device is arranged in the cavity, is positioned below the air outlet and is suitable for separating water vapor in the cavity; one end of the exhaust pipe is connected with the air outlet, the other end of the exhaust pipe is suitable for being communicated with an inner cavity of the cooking equipment, and the exhaust pipe is suitable for separating water vapor in the exhaust pipe.

Through setting up first separator in steam generator's cavity, can carry out steam and water separation to the steam of following steam generator's gas outlet exhaust steam, through set up the blast pipe between steam generator's gas outlet and cooking equipment, and the blast pipe can separate once more the steam that is in it, further reduces the humidity from steam generator exhaust steam, through the dual separation of first separator and blast pipe, can improve dehumidification effect greatly, and then improve user experience degree.

The first separating device has many specific forms, and as shown in fig. 4, the first separating device in this embodiment is a separating orifice plate, and the separating orifice plate is provided with a plurality of through holes. The separation orifice plate is arranged above the bottom wall of the cavity at intervals and is suitable for being positioned under water in the cavity when the steam system works normally. Through setting up first separator into the separation orifice plate, set up a plurality of through-holes on the separation orifice plate to the separation orifice plate is in under water in the cavity when steam system normally works, makes the big bubble that the water in the cavity produced when the boiling can become the microbubble under the effect of through-hole on the separation orifice plate, and then prevents bumping of water, reduces the undulant degree of the surface of water by a wide margin, and then guarantees that the drop of water that flows along with steam is less. As an alternative embodiment, the perforated separating plate may be arranged above the water during normal operation of the steam system.

As shown in fig. 5, the exhaust pipe in this embodiment is a curved shape, specifically, a corrugated pipe. Through setting up the blast pipe into the structure of bending shape, make steam that is in it when each department of buckling of process blast pipe in the flow process, the speed sudden change of steam mixture, because the density of water is far more than the density of pure steam, under the effect of centrifugal force etc., steam realizes better separation, guarantee that the better steam of quality gets into cooking equipment's inner chamber, and realize the steam-water separation through the structure of blast pipe itself, and need not to set up solitary steam-water separation structure again, also make steam system's structure simpler. Alternatively, a moisture separation device, such as a gas distribution plate, may be provided at a position in the exhaust pipe through which moisture flows.

In order to achieve a better water-vapor separation effect, the steam system in this embodiment further includes: and the at least one hydrophobic hook is arranged at the bending part of the exhaust pipe. Through the department of bending at the blast pipe set up hydrophobic hook, can more effectually cause the speed sudden change of steam in the department of bending, and then reach better vapor separation effect, guarantee to get into the inner chamber of cooking equipment be the saturated steam of high-quality, reduce the comdenstion water that forms in the inner chamber. As an alternative embodiment, no hydrophobic hooks may be provided.

Specifically, each bent part of the exhaust pipe is provided with two hydrophobic hooks which are respectively arranged on the upper inner wall and the lower inner wall of the exhaust pipe. As shown in fig. 5, one of the hydrophobic hooks extends inward from the inner wall of the bent portion, and the other hydrophobic hook extends inward from the inner wall of the bent portion and then extends along the opposite direction of the water vapor flowing direction. Through every department of bending at the drain pipe set up two hydrophobic hooks, locate the upper and lower inner wall of blast pipe respectively on, the vortex of increase steam that can bigger degree in the department of bending realizes better speed sudden change, reaches better steam separation effect. As an alternative embodiment, the specific arrangement direction of the hydrophobic hooks may be specifically set according to the actual situation, and is not limited herein.

As shown in fig. 4, the steam system in this embodiment further includes a second separating device, where the second separating device is disposed at the air outlet and is adapted to separate water vapor at the air outlet. Specifically, the second separator includes the diapire and connects the lateral wall at diapire both ends, the diapire with the lateral wall encloses into the U-shaped chamber, the diapire with be equipped with a plurality of through-holes on the lateral wall. Through set up second separator in gas outlet department, can constitute triple steam separation effect with first separator and blast pipe to the further separation of steam that will follow the gas outlet exhaust, further guarantee to discharge into the steam of the inner chamber of cooking equipment for saturated steam, reduce the production of comdenstion water. In an alternative embodiment, the second separation device may be a separation orifice and may be provided at the gas outlet.

The steam system in this embodiment includes: the heating device is arranged outside the bottom wall of the cavity and comprises at least two heating tubes which are arranged in parallel; the control device is connected with the heating pipes and is suitable for controlling at least one heating pipe to work when the steam system works. The control device controls the two heating tubes to work at the target temperature at the same time and controls the two heating tubes to work alternately. Through setting heating device to including two at least heating tubes that connect in parallel and set up, controlling means at first controls two heating tubes and works to the target temperature simultaneously, then controls two heating tubes work in turn to maintain required temperature in the steam generator, the single tube duty cycle work through controlling means control heating tube can prolong heating tube's life. As an alternative embodiment, both heating tubes of the heating device may always be operated simultaneously during normal operation of the steam system.

As shown in fig. 3, the cavity in this embodiment is provided with a water inlet, a water outlet and a water level detecting device, and the water level detecting device is connected to the control device and adapted to control the water level in the cavity. Specifically, the water level detecting means is a water level probe. Through set up water level detection device in steam generator's cavity, water level detection device is connected with controlling means, and the normal use of steam generator is guaranteed to the water level in the control cavity that can be full-automatic. As an alternative embodiment, the water level detecting device may be another type of water level detector, such as a water level detecting box.

In order to better control the water level, the steam system in this embodiment further includes a timer, the timer is connected to the control device, and is adapted to control the timer to start after the water level detection device detects that the water level in the cavity reaches a preset water level, and the control device controls to stop the water injection into the cavity after the timer times a preset time. Specifically, the preset time may be 1s or 2 s. Through setting up the time-recorder of being connected with controlling means, can detect the water level in the cavity and reach and predetermine the water level after, controlling means control time-recorder opens to reach after predetermineeing the time of time-recorder, controlling means is the water injection that stops in the cavity again, prevent that frequent break-make from carrying out the moisturizing effect not good, prolonged the life of equipment. As an alternative embodiment, the timer may not be provided.

As shown in fig. 1, steam generator in this embodiment is water storage formula boiler, steam system still includes the drainage structures of feedwater, the drainage structures of feedwater mainly includes the water tank, the intake pump, the return pump, the water tank includes injection moulding's water purification district and waste water district, water purification district and waste water district do not are used for saving water purification and waste water, the one end and the water purification district of intake pump are connected, the other end is connected with the water inlet of water storage formula boiler, a water storage formula boiler is supplied with to the water purification for extracting in the water tank, the one end and the waste water district of return pump are connected, the other end is connected with the outlet of water storage formula boiler, a surplus waste water in the water storage formula boiler after the extraction culinary art.

When the steam system operates, the control device controls the water inlet pump to work, the water inlet pump pumps water from the water tank to the water storage type boiler, the water inlet pump stops working until the water level probe senses water and delays for 2s, water is supplemented at any time when water shortage is detected midway, then the control device controls the two heating pipes of the water storage type boiler to work in full power until the temperature in the cavity reaches the target temperature, the duty ratio of the single pipes is switched to PID control, the dynamic balance of steam supply is guaranteed until cooking is finished, and finally the control device controls the water return pump to pump back residual water in the water storage type boiler.

As shown in fig. 2, the cooking device in this embodiment has an inner cavity, and the inner cavity has an air inlet connected to the other end of the exhaust pipe; the inner cavity is provided with an air outlet, the air outlet is provided with a third separation device, and the third separation device is suitable for separating water vapor to be discharged from the inner cavity. As shown in fig. 6, the third separation device has the same structure as the second separation device. Set up third separator through the gas vent department at the cooking equipment inner chamber, can prevent that the steam load of gas vent department from concentrating, the steam velocity of flow is too fast, and then carries a large amount of little drop of water and discharges, causes not good user experience.

Specifically, the cooking apparatus in the present embodiment is a steam oven. As an alternative embodiment, the cooking device may be another device requiring steam cooking.

The steam oven adopts a water storage type boiler with double heating pipes, and a first separation device is arranged at the bottom of the water storage type boiler, so that the increase of steam humidity caused by bumping of saturated water is reduced; meanwhile, a second separation device is arranged below an air outlet of the boiler for throttling, so that the concentration of local steam load is prevented, the rising speed of steam is reduced, and small water drops carried in the steam are reduced; moreover, the exhaust pipe is arranged to be a corrugated pipe with the inside provided with the hydrophobic hooks, so that steam is subjected to water-vapor separation again while the steam is transmitted, the dryness of the saturated steam entering the inner cavity of the steaming oven is improved, and condensed water attached to the surface of food and in the inner cavity is reduced; finally, set up the gas equalization hole board at cavity exhaust port department, throttle the exhaust steam that needs the exhaust, intercept the drop of water in some steam simultaneously, prevent that exhaust velocity is too violent, reduce the aqueous vapor of discharging in the external environment, promote user experience.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A steam system, comprising:

2. The steam system of claim 1, wherein the exhaust pipe is curved.

3. The steam system of claim 2, further comprising:

4. The steam system as recited in claim 3, wherein each of the bent portions of the exhaust pipe has two hydrophobic hooks respectively disposed on upper and lower inner walls of the exhaust pipe.

5. The steam system of claim 1, wherein the first separation device is a separation orifice having a plurality of through-holes.

6. The steam system of claim 5, wherein the separation orifice is spaced above a bottom wall of the chamber and is adapted to be submerged within the chamber during normal operation of the steam system.

7. The steam system according to any one of claims 1 to 6, further comprising a second separation device provided at the gas outlet adapted to separate water vapor at the gas outlet.

8. The steam system according to claim 7, wherein the second separating device comprises a bottom wall and a side wall connecting two ends of the bottom wall, the bottom wall and the side wall are enclosed into a U-shaped cavity, and a plurality of through holes are formed in the bottom wall and the side wall.

9. A steaming system according to any one of claims 1-6, characterized in that the steaming system comprises:

10. The steam system as recited in claim 9, wherein the control device controls the two heat generating pipes to operate at the target temperature simultaneously and controls the two heat generating pipes to operate alternately.

11. The steam system as claimed in claim 9, wherein the chamber is provided with a water inlet, a water outlet and a water level detecting device connected to the control device and adapted to control the water level in the chamber.

12. The steam system according to claim 11, further comprising a timer connected to the control device, wherein the control device controls the timer to start after the water level detection device detects that the water level in the cavity reaches a preset water level, and controls the control device to stop filling water into the cavity after the timer reaches a preset time.

13. A cooking device comprising a steam system according to any one of claims 1-12.

14. The cooking apparatus according to claim 13, wherein the cooking apparatus has an inner cavity having an air inlet therein, the air inlet being connected to the other end of the exhaust pipe;

15. Cooking apparatus according to claim 13 or 14, characterized in that the cooking apparatus is a steamer.