CN213155366U - Steam cooking utensil of back flush scale removal - Google Patents

Abstract

The utility model discloses a steam cooking utensil for back washing descaling, which belongs to the field of kitchen cooking utensils and solves the descaling problem of the prior steam cooking utensil, and the steam cooking utensil for back washing descaling provided by the utility model comprises a machine body and a cooking container, the machine head is provided with a steam generator, a water pump and a steam outlet, the water pump is connected with a water source, a water inlet pipeline is connected between the water pump and the water inlet of the steam generator, a gas transmission pipeline is connected between the gas outlet of the steam generator and the steam output port, the machine body also comprises a back washing pipeline and a water discharging pipeline, the back washing pipeline is communicated with the water pump and the air outlet of the steam generator, the water discharge pipeline is communicated with a water inlet of the steam generator, the steam cooking appliance has a back washing mode, and under the back washing mode, back washing water flow flowing from the air outlet to the water inlet is formed in the steam generator and is used for back washing descaling.

Description

Steam cooking utensil of back flush scale removal

[ technical field ] A method for producing a semiconductor device

The utility model relates to a kitchen cooking utensil field especially relates to steam cooking utensil of back flush scale removal.

[ background of the invention ]

The steam heating type cooking appliance uses a steam generator to heat water to generate steam so as to provide a steam heat source for food cooking, wherein the steam generator mainly comprises two types: the water storage type boiler of the utility model is a water storage type boiler that boils water in a large space, and the other kind is an instant heating type boiler that heats fast in a small space, and no matter which kind of steam generator can all produce the incrustation scale when using non-pure water to heat, especially uses in the region that quality of water is hard partially, and the incrustation scale problem can be more serious. Scaling can reduce the heating efficiency of inside heating device in the steam generator, and serious can lead to the heating device overheated and burn out, produces the potential safety hazard to along with the scale deposit time extension, the incrustation scale washs the degree of difficulty and can be big more.

For the scaling problem of the steam generator, a common descaling method is to dissolve and inject an acidic descaling agent into the steam generator, and discharge the acidic descaling agent and scale out of the steam generator after the acidic descaling agent and the scale are heated and reacted for a period of time, so as to achieve the purpose of descaling. However, this method requires the user to adjust the concentration of the descaling liquid, and is not convenient enough.

[ Utility model ] content

The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing a steam cooking appliance for backwashing and descaling.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the steam cooking appliance comprises an appliance body and a cooking container, wherein a steam generator, a water pump and a steam output port are arranged on the appliance body, the water pump is connected with a water source, a water inlet pipeline is connected between the water pump and a water inlet of the steam generator, a gas pipeline is connected between a gas outlet of the steam generator and the steam output port, the appliance body further comprises a backwashing pipeline and a water drainage pipeline, the backwashing pipeline is communicated with the water pump and the gas outlet of the steam generator, the water drainage pipeline is communicated with the water inlet of the steam generator, the steam cooking appliance has a backwashing mode, and backwashing water flow flowing from the gas outlet to the water inlet is formed in the steam generator and used for backwashing and descaling in the backwashing mode.

In the steam cooking appliance for backwashing and descaling, the position of the air outlet of the steam generator is higher than the position of the water inlet of the steam generator.

In the steam cooking utensil for back washing descaling, the water inlet pipeline is provided with a first reversing valve, the gas transmission pipeline is provided with a second reversing valve, and the back washing pipeline is connected between the first reversing valve and the second reversing valve.

In the steam cooking appliance for back washing descaling, a third reversing valve is further arranged on a water inlet pipeline between the first reversing valve and the water inlet of the steam generator, and the water drainage pipeline is connected with the third reversing valve.

In the above steam cooking appliance for backwashing and descaling, the first direction valve, the second direction valve and the third direction valve are all three-way valves.

In the steam cooking appliance for backwashing and descaling, the machine body is provided with the water collecting box, and the water drainage pipeline is communicated with the water collecting box.

In the above steam cooking appliance for backwashing and descaling, the machine body further comprises an exhaust pipeline, and the exhaust pipeline is communicated with the cooking container and the water collecting box.

In the steam cooking appliance for backwashing and descaling, the water collecting box is provided with a steam recycling port communicated with the exhaust pipeline and a scale recycling port communicated with the drainage pipeline, and the position of the steam recycling port is higher than that of the scale recycling port

In the above steam cooking appliance for backwashing and descaling, the water source is a water tank mounted on the machine body or an external water source.

In the steam cooking appliance for backwashing and descaling, the machine body comprises a machine base, a machine head and an open space defined by the machine base and the machine head, the cooking container is arranged in the open space, the cooking container comprises a pot body and a pot cover with a steam inlet, the steam outlet is arranged on the machine head, and the machine head is butted with the pot cover so as to connect the steam outlet and the steam inlet;

or, the machine body comprises a machine base and a cover body, the machine base is provided with a containing cavity with an open upper end, the cooking container is an inner container with an open upper end, the inner container is placed in the containing cavity, the cover body covers the inner container to form the cooking cavity, and the steam outlet is arranged on the cover body.

The utility model has the advantages that:

the utility model provides a steam cooking utensil of back flush scale removal, including organism and cooking container, be equipped with steam generator, water pump and steam delivery outlet on the organism, the water source is connected to the water pump, the water pump with be connected with the water intake pipe between steam generator's the water inlet, steam generator's gas outlet with be connected with the gas transmission pipeline between the steam delivery outlet, the organism still includes back flush pipeline and drain line, back flush pipeline intercommunication the water pump with steam generator's gas outlet, drain line intercommunication steam generator's water inlet, steam cooking utensil has the back flush mode, under the back flush mode, form in the steam generator and be used for the back flush scale removal by the back flush rivers that the gas outlet flows to the water inlet.

Under the culinary art state, water pump work makes in water gets into steam generator through inlet tube route steam generator's water inlet, steam generator adds hydrothermal and produces steam, and steam is exported from steam generator's gas outlet and is carried to the steam delivery outlet through the gas transmission pipeline, carries steam in to the culinary art container by the steam delivery outlet, realizes steam cooking.

Under the back washing mode, the water pump works to enable water to enter the steam generator through the back washing pipeline and the air outlet of the steam generator and to be used for washing scale in the steam generator, and the dissolved scale is discharged from the water discharging pipeline along with water flow after flowing out of the water inlet, so that back washing and descaling are realized. The utility model discloses in, do not have special restriction to the washing liquid that is used for the back flush scale removal, use non-pure water can, consequently, foretell back flush mode can be at steam cooking utensil automatic execution after the culinary art procedure at every turn to can both in time clear away the incrustation scale after steam generator uses at every turn, guarantee steam generator's work efficiency and safety in utilization, reduced user operation, also avoided the user to forget the problem that the long-time scale deposit of washing lead to steam generator increases the potential safety hazard.

Further, the position of the air outlet of the steam generator is higher than the position of the water inlet of the steam generator. In a cooking state, water entering the steam generator flows from the water inlet to the air outlet, and as the air outlet is higher than the water inlet, scale is intensively attached to the area, close to the water inlet, in the steam generator under the action of gravity; during back flushing descaling, the dissolved scale smoothly flows out from the water inlet along with the back flushing water flow, so that the scale residue in the steam generator is greatly reduced, secondary adhesion of the scale is avoided, and the descaling effect is better.

Furthermore, a water collecting box is arranged on the machine body, and the water drainage pipeline is communicated with the water collecting box. The water scale discharged along the drainage pipeline is concentrated in the water collecting box, so that the water collecting box is convenient for users to clean.

Further, the machine body further comprises an exhaust pipeline, and the exhaust pipeline is communicated with the cooking container and the water collecting box. The exhaust pipeline is used for guiding steam exhausted by the cooking container into the water collecting box, and most of the steam can be condensed into condensed water in the water collecting box, so that the steam discharge amount of the steam cooking appliance in the cooking process is reduced; drainage pipe way and exhaust pipe all are connected to receiving on the water box, and steam is retrieved and is received water box with incrustation scale clearance sharing promptly, and condensate water and incrustation scale can concentrate the clearance, both saves the cost, has made things convenient for the user again.

Furthermore, the water collecting box is provided with a steam recycling port communicated with the exhaust pipeline and a scale recycling port communicated with the drainage pipeline, and the steam recycling port is higher than the scale recycling port. The back flush water flow carrying with the scale is prevented from entering the exhaust pipeline from the steam recovery port after being discharged into the water receiving box and then flowing back into the cooking container.

These features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The invention will be further explained with reference to the drawings:

fig. 1 is a schematic structural view of a steam cooking appliance according to an embodiment of the present invention;

FIG. 2 is a schematic view of the pipe connection (cooking state) of the steam cooking device according to an embodiment of the present invention

Fig. 3 is a schematic view of the piping connection of the steam cooking appliance according to an embodiment of the present invention (back-washing mode);

fig. 4 is a schematic view of a piping connection of a steam cooking appliance according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a steam cooking appliance according to an embodiment of the present invention.

Reference numerals:

100 machine bases, 110 bases, 120 columns, 130 machine head installation bases, 140 first reversing valves, 150 third reversing valves, 160 second reversing valves, 170 water inlet pipelines, 180 backwashing pipelines and 190 gas pipelines;

200 machine heads and 210 steam outlets;

300 cooking container, 310 pot body, 320 pot cover, 321 steam input port and 330 exhaust pipeline;

400 water pump;

500 steam generator, 510 gas outlet, 520 water inlet;

600 water tank;

700 a drain line;

800 water collecting box, 810 steam recovering port, 820 scale recovering port;

900 cover body.

[ detailed description ] embodiments

The utility model provides a steam cooking utensil of back flush scale removal, including organism and cooking container, be equipped with steam generator, water pump and steam delivery outlet on the organism, the water source is connected to the water pump, the water pump with be connected with the water intake pipe between steam generator's the water inlet, steam generator's gas outlet with be connected with the gas transmission pipeline between the steam delivery outlet, a serial communication port, the organism still includes back flush pipeline and water drainage pipeline, back flush pipeline intercommunication the water pump with steam generator's gas outlet, water drainage pipeline intercommunication steam generator's water inlet, steam cooking utensil has the back flush mode, under the back flush mode, form in the steam generator and be used for the back flush scale removal to the back flush rivers that the water inlet flows by the gas outlet.

Under the back washing mode, the water pump works to enable water to enter the steam generator through the back washing pipeline and the air outlet of the steam generator and to be used for washing scale in the steam generator, and the dissolved scale is discharged from the water discharging pipeline along with water flow after flowing out of the water inlet, so that back washing and descaling are realized. The utility model discloses in, do not have special restriction to the washing liquid that is used for the back flush scale removal, use non-pure water can, consequently, foretell back flush mode can be at steam cooking utensil automatic execution after the culinary art procedure at every turn to can both in time clear away the incrustation scale after steam generator uses at every turn, guarantee steam generator's work efficiency and safety in utilization, reduced user operation, also avoided the user to forget the problem that the long-time scale deposit of washing lead to steam generator increases the potential safety hazard.

The technical solutions of the embodiments of the present invention are explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 and 2, the steam cooking utensil of back flush descaling that an embodiment of the utility model provides, including organism and cooking container 300, be equipped with steam generator 500, water pump 400 and steam delivery outlet 210 on the organism, water source is connected to water pump 400, is connected with water inlet pipe 170 between water pump 400 and steam generator 500's water inlet 520, is connected with gas transmission pipeline 190, specific theory between steam generator 500's gas outlet 510 and the steam delivery outlet 210: the machine body of the embodiment comprises a machine base 100, a machine head 200 and an open space defined by the machine base and the machine head, wherein a cooking container 300 is arranged in the open space, the cooking container 300 comprises a pot body 310 and a pot cover 320 with a steam input port 321, and a steam output port 210 is arranged on the machine head 200; the machine base 100 comprises a base 110, a vertical column 120 arranged on one side of the base 110 and a machine head mounting seat 130 transversely extending from the upper part of the vertical column 120, the base 110, the vertical column 120 and the machine head mounting seat 130 form a frame-shaped structure with one open side, and the machine head 200 is assembled on the machine head mounting seat 130 and can extend and retract along the height direction of the machine body.

The water source in this embodiment is a water tank 600 installed on the machine body, the water tank 600 is generally installed at the rear side of the machine body, the bottom of the water tank 600 is communicated with the water pump 400, and the water tank 600 is provided so that the use of the steam cooking appliance is not limited by a fixed water source. Of course, in other embodiments of the present invention, the water tank may be eliminated and a fixed external water source, such as a faucet, may be used.

According to the steam cooking appliance of the embodiment, during cooking, the machine head 200 moves downwards to connect the steam output port 210 with the steam input port 321, the water pump 400 works to enable water to enter the steam generator 500 from the water inlet 520 of the steam generator 500 through the water inlet pipeline 170, the steam generator 500 heats water to generate steam, the steam is output from the air outlet 510 of the steam generator 500 and is conveyed to the steam output port 210 through the air conveying pipeline 190, and the steam is conveyed into the cooking container 300 through the steam output port 210, so that steam cooking is achieved.

The steam cooking utensil of this embodiment has adopted the external structure of cooking container, places the cooking container in open space, and not only convenience of customers gets and puts the cooking container, has also reduced the restriction to the cooking container type, and the cooking container can be the container of cooking and cooking congee, also can be the container of other functions such as steamed fish container, disinfection container, reaches the purpose that a tractor serves several purposes.

Referring to fig. 2, in this embodiment, the machine body further includes a back-washing pipeline 180 and a water discharge pipeline 700, the back-washing pipeline 180 communicates the water pump 400 and the air outlet 510 of the steam generator 500, the water discharge pipeline 700 communicates the water inlet 520 of the steam generator 500, and the steam cooking appliance has a back-washing mode, in which a back-washing water flow flowing from the air outlet 510 to the water inlet 520 is formed in the steam generator 500 for back-washing and descaling, specifically: in the back-flushing mode, the water pump 400 operates to make water in the water tank 600 enter the steam generator 500 from the air outlet 510 of the steam generator 500 through the back-flushing pipeline 180, so as to flush scale in the steam generator 500, and the dissolved scale is discharged from the water discharge pipeline 700 after flowing out from the water inlet 520 along with water flow, thereby realizing back-flushing descaling.

It should be noted that: the back washing descaling is realized by utilizing the cold and hot impact to separate and dissolve the scale at the scaling part, the descaling purpose is achieved, when the cooking is finished and the back washing mode is started, the steam generator 500 stops working at the moment, but the back washing water flow also has the waste heat, and the cold and hot impact is formed when the back washing water flow enters the steam generator 500 and contacts the scaling part, so that the scale at the scaling part is separated and dissolved in the back washing water flow, and finally the scale flows out from the water inlet 520 along with the back washing water flow. The steam generator 500 may also be heated to a predetermined temperature if the residual heat of the steam generator 500 meets the descaling requirement. Based on the above-mentioned backwashing descaling principle, the position of the air outlet 510 of the steam generator 500 is higher than the position of the water inlet 520 of the steam generator 500, in the cooking state, the water entering the steam generator 500 flows from the water inlet 520 to the air outlet 510, and because the position of the air outlet 510 is higher than the position of the water inlet 520, the scale is intensively attached to the area inside the steam generator 500 close to the water inlet 520 under the action of gravity; during back flushing descaling, the dissolved scale smoothly flows out from the water inlet 520 along with the back flushing water flow, so that the scale residue in the steam generator 500 is greatly reduced, secondary adhesion of the scale is avoided, and the descaling effect is better.

For convenient use, the back flush mode can be automatically executed after the cooking procedure of the steam cooking appliance is finished every time, so that the incrustation scale can be timely removed after the steam generator 500 is used every time, the working efficiency and the use safety of the steam generator 500 are ensured, the user operation is reduced, and the problem that the potential safety hazard is increased due to the fact that the user forgets to clean the steam generator 500 to scale for a long time is also avoided. Of course, in other embodiments of the present invention, a cleaning key may be provided on the machine body, and the backwashing mode is started by pressing the cleaning key, that is, the user selects whether to start the descaling function.

Referring to fig. 2 and 3, in an embodiment of the present invention, a steam cooking appliance according to the above embodiment: the pipeline arrangement in the machine body is optimized, the pipeline structure is simplified and the pipeline cost is reduced on the premise of realizing steam conduction and backwashing descaling, and the specific scheme is as follows:

the water inlet pipeline 170 is provided with a first reversing valve 140, the gas transmission pipeline 190 is provided with a second reversing valve 160, and the backwashing pipeline 180 is connected between the first reversing valve 140 and the second reversing valve 160. Referring to fig. 2, during cooking, the first direction valve 140 cuts off the front end of the back flush pipe 180, so that water in the water tank 600 enters the steam generator 500 from the water inlet 520 of the steam generator 500 through the water inlet pipe 170 by the water pump 400; the second direction valve 160 cuts off the rear end of the backwash pipeline 180, and the steam output from the gas outlet 510 of the steam generator 500 is delivered from the gas pipeline 190 to the steam output port 210. Referring to fig. 3, in the back-flushing mode, the first direction valve 140 cuts off the water inlet pipe 170 between the first direction valve 140 and the water inlet 520 of the steam generator 500, and the second direction valve 160 cuts off the air pipe 190 between the second direction valve 160 and the steam outlet 210, so that the water in the water tank 600 enters the steam generator 500 from the air outlet 510 of the steam generator 500 through the back-flushing pipe 180 under the action of the water pump 400.

Referring to fig. 2, the third direction valve 150 is provided on the water inlet pipe 170 between the first direction valve 140 and the water inlet 520 of the steam generator 500, and the drain pipe 700 is connected to the third direction valve 150, and when cooking, the third direction valve 150 cuts off the drain pipe 700, and water does not flow into the drain pipe 700; referring to fig. 3, in the back flush mode, the third direction valve 150 cuts off the water inlet line 170 between the third direction valve 150 and the first direction valve 140, so that the back flush water flowing out of the water inlet 520 of the steam generator 500 is discharged through the water discharge line 700.

In the above solution, the water inlet pipeline between the water pump 400 and the first direction valve 140, and the gas pipeline between the gas outlet 510 of the steam generator 500 and the second direction valve 160 all belong to a pipeline shared by the cooking function and the backwashing descaling function, so as to achieve the purposes of simplifying the pipeline structure and reducing the pipeline cost.

In order to conveniently control the on/off of the pipeline, the first direction valve 140, the second direction valve 160, and the third direction valve 150 of the present embodiment are all three-way valves, such as three-way solenoid valves. Of course, in other embodiments, different numbers of two-way valves, three-way valves, or multi-way combination valves may be used to achieve the same on/off control of the pipeline as described in this embodiment.

Referring to fig. 4, in an embodiment of the present invention, a steam cooking appliance according to the above embodiment: the water collecting box 800 is arranged on the machine body, the water discharging pipeline 700 is communicated with the water collecting box 800, and under a back washing mode, water scales discharged along the water discharging pipeline 700 are concentrated in the water collecting box 800, so that a user can clean the water collecting box conveniently.

In this embodiment, the machine body further includes an exhaust pipeline 330, the exhaust pipeline 330 communicates the cooking container 300 and the water receiving box 800, during cooking, the exhaust pipeline 330 is used for guiding steam exhausted from the cooking container 300 into the water receiving box 800, and most of the steam can be condensed into condensed water in the water receiving box 800, so as to reduce the steam discharge amount of the steam cooking appliance during cooking; the drainage pipeline 700 and the exhaust pipeline 330 are connected to the water collecting box 800, namely the steam recovery and the scale cleaning share the same water collecting box 800, condensed water and scale can be cleaned in a centralized manner, so that the cost is saved, and convenience is brought to users. Of course, in other embodiments, two water collecting boxes may be disposed on the machine body to collect the scale and the steam condensate respectively.

The water receiving box 800 is provided with a steam recovery port 810 communicated with the exhaust pipeline 330 and a scale recovery port 820 communicated with the drainage pipeline 700, and the steam recovery port 810 is higher than the scale recovery port 820, so that the back flush water flow carrying scale is prevented from entering the exhaust pipeline 330 from the steam recovery port 810 and then flowing back into the cooking container 300 after being discharged into the water receiving box 800.

Referring to fig. 5, the steam cooking appliance for backwashing and descaling provided in an embodiment of the present invention includes a machine body and a cooking container 300, the machine body includes a base 100 and a cover 900, the base 100 has an accommodating cavity with an open upper end, the cooking container 300 is an inner container with an open upper end, the inner container is placed in the accommodating cavity, the cover 900 covers the inner container to form a cooking cavity, and a steam outlet 210 is disposed on the cover 900. In this embodiment, the design of the pipeline related to steam conduction and backwashing descaling can refer to the first embodiment, which is not described again, but the structure of the machine body is different from that of the first embodiment: this embodiment frame 100 has the open holding chamber in upper end, and the inner bag is placed at the holding chamber, has better heat preservation effect during the culinary art.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims (10)

1. The steam cooking appliance is characterized in that the machine body further comprises a backwashing pipeline and a drainage pipeline, the backwashing pipeline is communicated with the water pump and the gas outlet of the steam generator, the drainage pipeline is communicated with the water inlet of the steam generator, the steam cooking appliance has a backwashing mode, and backwashing water flowing from the gas outlet to the water inlet in the steam generator is formed in the steam generator and used for backwashing and descaling.

2. The backflush descaling steam cooking device of claim 1, wherein the steam generator has a higher outlet than a water inlet.

3. The backwashing descaling steam cooking appliance of claim 1, wherein the water inlet pipeline is provided with a first reversing valve, the gas pipeline is provided with a second reversing valve, and the backwashing pipeline is connected between the first reversing valve and the second reversing valve.

4. The backflushing descaling steam cooking apparatus of claim 3 wherein a third reversing valve is provided on the water inlet line between said first reversing valve and the water inlet of said steam generator, and said drain line is connected to said third reversing valve.

5. The backflush descaling steam cooking device of claim 4, wherein the first diverter valve, the second diverter valve and the third diverter valve are three-way valves.

6. The backflushing descaling steam cooking apparatus according to one of claims 1 to 5 wherein a water collection box is provided on said body, and said drain line communicates with said water collection box.

7. The backflush descaling steam cooking apparatus of claim 6, wherein the body further comprises an exhaust line communicating the cooking vessel and the water collection box.

8. The steam cooking appliance for backwashing and descaling as claimed in claim 7, wherein the water collecting box is provided with a steam recovery port communicated with the exhaust pipeline and a scale recovery port communicated with the drain pipeline, and the steam recovery port is higher than the scale recovery port.

9. The backflush descaling steam cooking device of any one of claims 1 to 5, wherein the water source is a water tank mounted on the body or an external water source.

10. The backwashing descaling steam cooking device of one of claims 1 to 5, wherein the body comprises a base, a head and an open space defined by the base and the head, the cooking container is disposed in the open space, the cooking container comprises a pot body and a pot cover with a steam inlet, the steam outlet is disposed on the head, and the head abuts against the pot cover to connect the steam outlet and the steam inlet;

or, the machine body comprises a machine base and a cover body, the machine base is provided with a containing cavity with an open upper end, the cooking container is an inner container with an open upper end, the inner container is placed in the containing cavity, the cover body covers the inner container to form the cooking cavity, and the steam outlet is arranged on the cover body.

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