CN212234125U - Energy-saving steaming cabinet capable of heating rapidly - Google Patents

Abstract

The utility model provides an energy-saving steaming cabinet capable of rapid heating, which relates to the field of cooking utensils and comprises a steaming cabinet main body and a steam generating device. A control module and a human-computer interaction module are arranged on the outside of the main body of the cabinet. The steam generating device is connected with a water tank through pipes. The steam generating device is provided with a plurality of heating elements. The heating elements are electrically connected to the control module. The steaming chambers are communicated with each other, a steam control valve is arranged between each steaming chamber and the steam passage, and the steam control valve is electrically connected with the control module. The utility model can overcome the technical defects of long startup heating time and slow steaming speed of the traditional steaming cabinet, and can realize the technical effect of steaming food quickly and efficiently.

Description

Energy-saving steam cabinet with fast heating

technical field

The utility model relates to the field of cooking utensils, in particular to an energy-saving steaming cabinet capable of rapid heating.

Background technique

At present, the number of catering units in my country is increasing rapidly. Many catering units each need more than one fast high-temperature steam energy-saving steaming cabinet, and the potential market demand is larger. The rapid high-temperature steam energy-saving steam cabinet related equipment industry has just started, and the current situation of unbalanced supply and demand makes the energy-saving steam cabinet market a market with great potential. With the promulgation and implementation of a series of national policies and regulations and the improvement of residents' environmental awareness, energy-saving steam cabinets will have good development potential and market prospects. At the same time, with the increasingly serious problems of environmental pollution and energy consumption in my country, energy conservation and environmental protection have become an important direction of social and economic development in my country. A series of activities, such as food refrigeration, heating and cooking, and tableware cleaning, consume a lot of energy in residents' daily life. The use of high-energy-consuming kitchen appliances not only easily causes energy waste, but also brings more energy costs to consumers.

Using appropriate energy-saving and environmentally friendly kitchen appliances in the kitchen can not only effectively save the cost of energy consumption, but also improve the overall efficiency of food cooking.

At present, the steam cabinets on the market generally use three heating methods:

Existing technology 1: gas-heated steam cabinet, the gas-heated technology can be applied to all open spaces and underground dining places, and has a wide range of applications. At present, gas-heated steamers mostly use a one-way conduction heating method in which liquefied gas or natural gas is burned at the bottom of the water tank of the steamer. This conduction heating method has low thermal efficiency and high noise of the blower. When the burner is abnormally extinguished or the blower fails during normal operation, the equipment should automatically alarm and automatically cut off the gas source in time to avoid gas leakage. At present, the gas-heated steam cabinet equipment with automatic alarm function has entered the market and the effect is good, but Market recognition is not high due to price reasons. The Chinese patent document (application number CN201610641706.5) describes an energy-saving gas steaming cabinet, which can be easily transported through the set universal wheel, facilitates the operation through the set control panel, and the rotating flame path increases the heating area of the water tank, effectively Improve the utilization rate of gas, and the flue layer surrounds the water tank so that the heat contained in the flue gas can be used again, which is beneficial to improve the utilization rate of gas. Avoid it affecting the heat exchange efficiency, speed up the heating speed, and make it reused to further improve the gas utilization rate, and the controller monitors the temperature at any time through the temperature monitor and uses the gas controller to adjust the gas flow according to changes, effectively improving the gas utilization rate. Although the above-mentioned patent solves the problem of low gas utilization rate, it does not solve the problem of slow heating speed.

Existing technology 2: electric heating tube heating type steaming cabinet, electric heating tube heating type steaming cabinet mainly uses electric heating tube as resistance wire heating element, directly placing electric heating tube in water to heat water directly, from the analysis of detection results, electric heating tube heating Compared with the gas heating type steaming cabinet, it is more energy-saving, environmentally friendly, noise-free, and has higher thermal efficiency. The use is not limited by the site, and can be used in any place. From the perspective of the application site, the economy of the product, energy saving and environmental protection are improved. Most of the production plants use outsourced electric heating pipes. Due to the uneven quality of the heating pipes on the market, many steam cabinet manufacturers choose heating pipes. There are certain difficulties, and the service life of the electric heating tube is not long, and the heating tube needs to be replaced regularly, which also brings inconvenience to the user. For example, Chinese Patent Document Application No. CN201610152648.X describes a steaming cabinet equipped with an electric heating tube with an electric heating wire in a non-metallic tube. By using a non-metallic electric heating tube, no scale will form when immersed in water, and the electric heating element will never corrode and break down. , will not leak. The above patent solves the common safety problem of the electric heating tube heating type steam cabinet, but does not solve the problems of high heating efficiency and slow heating speed.

Existing technology three: electromagnetic heating type steaming cabinet, the electromagnetic heating type steaming cabinet uses the bottom plate of the electromagnetic conduction type heating water tank to conduct heat and generate steam, and the principle is mainly to use the principle of electromagnetic induction to convert electrical energy into heat. During normal operation, the rectifier circuit converts the 50Hz AC voltage into a DC voltage, and then the control circuit converts the DC voltage into a high-frequency voltage with a frequency of 16-40KHz. Repeated cutting changes on the bottom of the water tank generate a ring-shaped current (eddy current) on the bottom of the water tank, which directly causes the bottom of the pot to heat up quickly. Because it is induction heating, it can reduce the intermediate links of heat transfer, so the thermal efficiency is high. However, due to its high price, it has not been popularized, and the market recognition needs to be improved. A steaming cabinet using electromagnetic heating technology described in Chinese patent document CN201710152014.9 not only saves energy and is environmentally friendly, but also has the advantage of longer life than electric heating tube heating steaming cabinets, and does not require regular replacement of heating elements, and the use effect is also That's great, but there's currently no way to use it on a large scale due to the high cost. The above-mentioned gas heating type steaming cabinet, electric heating tube heating type steaming cabinet and electromagnetic heating type steaming cabinet all suffer from the problems of low resource utilization rate, long start-up heating time and slow steaming speed to varying degrees.

Utility model content

The technical problem to be solved by the utility model is to provide an energy-saving steaming cabinet capable of rapid heating, which can overcome the technical defects of long startup heating time and slow steaming speed of traditional steaming cabinets, and can achieve the technical effect of steaming food quickly and efficiently.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present utility model is: an energy-saving steaming cabinet capable of rapid heating, comprising a steaming cabinet body and a steam generating device, and the steam generating device passes through a pipeline and a steaming cavity in the steaming cabinet cabinet. The structure of the steam generating device is as follows: the first heating box and the second heating box are communicated through a plurality of heating pipes;

The heating pipe is provided with a heating device, so that the liquid circulating in the heating pipe is heated to generate steam.

In a preferred solution, the first heating box is located at the top, the second heating box is located at the bottom, and a plurality of heating pipes are located between the first heating box and the second heating box;

A water tank is also provided, and the bottom of the water tank is connected with the second heating tank through a connecting pipe.

In a preferred solution, a water level sensor is provided in the water tank or the first heating tank for controlling the water level in the steam generating device.

In a preferred solution, the structure of the heating pipe is as follows: the outer wall of the pipe made of non-metallic insulating material is provided with a heating film, and the non-metallic insulating material includes glass, quartz stone or ceramics.

In a preferred solution, the structure of the heating pipe is as follows: the outer wall of the metal pipe is provided with an insulating coating, and the outer wall of the insulating coating is provided with a heating film;

The insulating coating is glass, quartz or ceramic coating.

In a preferred solution, a thermal insulation layer is provided on the outer wall of the heating pipe, and the thermal insulation layer is a flexible temperature-resistant thermal insulation layer.

In a preferred solution, the structure of the heating pipe is as follows: the outer wall of the metal pipe is provided with an insulating layer, and the outer wall of the insulating layer is provided with an induction coil, and the induction coil is electrically connected to the alternating current generating device;

The insulating layer is asbestos, rubber, plastic or ceramic.

In a preferred solution, a first tube seat and a second tube seat are provided at both ends of the heating tube;

At least one of the first socket and the second socket is connected to the pipe body by plugging;

The first socket is electrically connected with the first electrode, the second socket is electrically connected with the second electrode, and the lines between the first electrode and the second electrode are arranged in a serpentine shape on the outer wall of the pipe body.

In a preferred solution, a one-way valve is provided at the end of the connecting pipe, so that the liquid can only flow from the water tank to the second heating tank.

In a preferred solution, the first heating box is communicated with each steam chamber of the steam cabinet through a steam pipe, and a steam automatic control valve and a secondary heating device are arranged between each steam chamber and the steam pipe;

There is a pressure relief valve at the top of the steam pipe.

The beneficial effects of the present utility model are:

1. Using the rapid heating characteristics of the electric heating film, the heating element can be instantly heated to a temperature of about 400 ° C after being energized, and the water in the tube can be boiled to generate steam. The whole process is within 10 seconds, and the speed is very fast.

2. The heating structure with multiple heating tubes can greatly increase the heating area, thereby further improving the efficiency of steam generation.

3. There is a secondary heating device at the steam inlet of the steaming chamber, so that the steam can be heated to a high temperature of 110°C for a second time. At this time, the time for heating the food will be greatly shortened.

4. The steam cabinet is divided into multiple independent chambers. The steam control valve and secondary heating device of each chamber are controlled separately. When one chamber is used, the heating element as a whole only needs to output one-third of the power, which effectively reduces the waste of energy.

5. The design of setting the water level sensor in the water tank and connecting the bottom of the water tank with the second heating tank can issue an alarm and stop the equipment when the water level is lower than the warning water level, and the temperature resistance of the water level sensor is not high, preventing steam A dry burn has occurred in the device, resulting in damage to the device.

Description of drawings

The utility model will be further described below in conjunction with the accompanying drawings:

FIG. 1 is a schematic diagram of the overall structure of the present invention.

FIG. 2 is a schematic three-dimensional structure diagram of the steam generating device of the present invention.

Figure 3 is a schematic cross-sectional view of the heating pipe in the utility model.

FIG. 4 is a schematic cross-sectional view of another preferred heating tube in the present invention.

FIG. 5 is a schematic view of the front structure of the heating pipe in the utility model.

6 is a schematic side view of the structure of the main body of the steaming cabinet in the present invention.

FIG. 7 is a schematic front view of the structure of the main body of the steaming cabinet in the utility model.

In the figure: steaming cabinet 1, door handle 11, steaming cabinet sealing door 12, steaming chamber 13, secondary heating device 14, temperature sensor 15, steam pipe 2, steam generating device 3, first heating box 31, heating pipe 32, tube body 321, heating film 322, first electrode 3221, second electrode 3222, insulation layer 323, insulating coating 324, first tube seat 325, second tube seat 326, second heating box 33, pressure relief valve 4. Control panel 5, water tank 6, water level sensor 7, steam automatic control valve 8, connecting pipe 9, one-way valve 91.

Detailed ways

As shown in Figures 1, 6, and 7, an energy-saving steaming cabinet capable of rapid heating includes a steaming cabinet body 1 and a steam generating device 3. The steam generating device 3 communicates with the steaming chamber 13 in the steaming cabinet body 1 through pipelines , the structure of the steam generating device 3 is as follows: the first heating box 31 and the second heating box 33 are connected through a plurality of heating pipes 32;

The heating pipe 32 is provided with a heating device, so that the liquid circulating in the heating pipe 32 is heated to generate steam. With this structure, the heating area is greatly increased by the arrangement of the plurality of heating pipes 32 , thereby facilitating the rapid production of steam and greatly improving the steam production efficiency.

In a preferred solution, as shown in Figures 1 and 2, the first heating box 31 is located at the top, the second heating box 33 is located at the bottom, and a plurality of heating pipes 32 are located between the first heating box 31 and the second heating box 33;

A water tank 6 is also provided, and the bottom of the water tank 6 is connected to the second heating tank 33 through a connecting pipe 9 . With this structure, the heating pipe 32 can be replenished with water through the water tank 6, so as to avoid excessive liquid in the heating part from affecting the efficiency of steam production.

In a preferred solution, as shown in FIG. 1 , a one-way valve 91 is provided at the end of the connecting pipe 9 , so that the liquid can only flow from the water tank 6 to the second heating tank 33 . With this configuration, the temperature of the liquid in the heating portion can be prevented from being affected by the temperature of the liquid in the tank 6 . That is, the liquid in the second heating tank 33 cannot enter into the water tank 6 by means of convection, thereby further improving the efficiency of steam production.

In a preferred solution, as shown in FIG. 1 , a water level sensor 7 is provided in the water tank 6 or the first heating tank 31 for controlling the water level in the steam generating device 3 . In this example, the water level sensor 7 is preferably arranged in the water tank 6 . The water level sensor 7 is preferably a capacitive water level sensor 7 .

In a preferred solution, as shown in FIG. 3 , the structure of the heating tube 32 is as follows: a heating film 322 is provided on the outer wall of the tube body 321 made of a non-metallic insulating material, and the non-metallic insulating material includes glass, quartz stone or ceramics. The heating film 322 is the prior art, such as the preparation technology of a kind of graphene electric heating film and the graphene electric heating film recorded in Chinese patent document CN110267375A, CN110536492A a kind of graphene electric heating film and its preparation method and CN110505719A heating film and its. Preparation. Or use an electric heating film made of electrothermal ceramic material, such as PTC heating ceramic material. With the solution in this example, the complexity of processing the heating tube 32 can be reduced.

In a preferred solution, as shown in FIG. 4, the structure of the heating pipe 32 is as follows: the outer wall of the metal pipe body 321 is provided with an insulating coating 324, and the outer wall of the insulating coating 324 is provided with a heating film 322;

The insulating coating 324 is a glass, quartz or ceramic coating, and the ceramic coating here is an insulating ceramic coating. With the solution in this example, the service life of the heating pipe 32 can be extended.

In a preferred solution, as shown in FIGS. 3 and 4 , a thermal insulation layer 323 is provided on the outer wall of the heating pipe 32 , and the thermal insulation layer 323 is a flexible temperature-resistant thermal insulation layer. For example, asbestos insulation layer, porous ceramic insulation layer or perlite insulation layer, etc.

In a preferred solution, the structure of the heating pipe 32 is as follows: the outer wall of the metal pipe body 321 is provided with an insulating layer, and an induction coil is provided on the outer wall of the insulating layer, and the induction coil is electrically connected to the alternating current generating device;

The insulating layer is asbestos, rubber, plastic or ceramic. In a further preferred solution, an insulating layer 323 is provided on the outer wall of the heating pipe 32 . With this structure, the liquid in the pipe body 321 is heated by induction heating, and the heating efficiency of the steam is improved by greatly increasing the heating area compared with the solution in the prior art.

In a preferred solution, as shown in FIG. 5 , a first tube base 325 and a second tube base 326 are provided at both ends of the heating tube 32;

At least one of the first tube base 325 and the second tube base 326 is connected to the tube body 321 by plugging; this structure facilitates the installation of the heating tube 32 . The first tube seat 325 or the second tube seat 326 is provided with a sealing ring, and sealing is achieved through the structure of the sealing ring.

The first socket 325 is electrically connected to the first electrode 3221 , the second socket 326 is electrically connected to the second electrode 3222 , and the lines between the first electrode 3221 and the second electrode 3222 are arranged in a serpentine shape on the outer wall of the tube body 321 . With this structure, the electrical connection of the heating film 322 is facilitated, and a short circuit between the first electrode 3221 and the second electrode 3222 can be largely avoided.

In a preferred solution, the first heating box 31 is communicated with each steam chamber 13 of the steamer cabinet 1 through the steam pipe 2. In this example, three steam chambers 13 are arranged from top to bottom, and each steam chamber 13 is connected to the steam pipe. A steam automatic control valve 8 and a secondary heating device 14 are arranged between 2; the steam automatic control valve 8 adopts an electric control valve. A temperature sensor 15 is also provided in the steam chamber 13 , and the temperature in the steam chamber 13 is controlled by the temperature sensor 15 . The top of the steam pipe 2 is provided with a pressure relief valve 4 . Each steam chamber 13 is provided with an independent control panel 5 for independently controlling the temperature of each steam chamber 13 .

When in use, the control temperature is set on the control panel 5 of each steam chamber 13, and the steam automatic control valve 8 of the steam chamber 13 with no temperature is automatically controlled to be closed. The steam production temperature of the steam generating device 3 takes the set minimum temperature as the control parameter of the working temperature, and the working temperature is the set minimum temperature of the steam chamber 13 plus the temperature lost during the steam transmission process, wherein the lost temperature during the steam transmission process. The temperature is obtained by experiment. Except for the steam chamber 13 with the set lowest temperature, the temperature of the other steam chambers 13 is further heated by the secondary heating device 14 . Through the above methods, steam can be produced with high efficiency, and the temperature of each steam chamber 13 can be independently controlled. The water tank 6 supplies liquid to the second heating tank 33 at any time through the connecting pipe 9 . When the liquid level of the water tank 6 drops to a preset value, the liquid level is controlled by the water level sensor 7 . The water tank 6 is replenished with liquid through the water inlet pipe.

The above-mentioned embodiments are only the preferred technical solutions of the present invention, and should not be regarded as limitations of the present invention. The embodiments and features in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present utility model shall take the technical solutions described in the claims, including the equivalent alternatives of the technical features in the technical solutions described in the claims, as the protection scope. That is, equivalent replacements and improvements within this scope are also within the protection scope of the present invention.

Claims (10)

1. The utility model provides a cabinet is evaporated in energy-conservation that can rapid heating, includes the cabinet body of evaporating cabinet (1) and steam generation device (3), steam generation device (3) through pipeline and evaporate steaming chamber (13) intercommunication in the cabinet body of evaporating cabinet (1), characterized by: the steam generating device (3) has the structure that: the first heating box (31) is communicated with the second heating box (33) through a plurality of heating pipes (32);

the heating pipe (32) is provided with a heating device, so that the liquid flowing in the heating pipe (32) is heated to generate steam.

2. The energy-saving steaming cabinet capable of being rapidly heated as claimed in claim 1, wherein: the first heating box (31) is positioned at the top, the second heating box (33) is positioned at the bottom, and the plurality of heating pipes (32) are positioned between the first heating box (31) and the second heating box (33);

a water tank (6) is also arranged, and the bottom of the water tank (6) is connected with a second heating tank (33) through a connecting pipe (9).

3. The energy-saving steaming cabinet capable of being rapidly heated as claimed in claim 2, wherein: a water level sensor (7) is arranged in the water tank (6) or the first heating tank (31) and is used for controlling the water level in the steam generating device (3).

4. The energy-saving steaming cabinet capable of being rapidly heated as claimed in claim 2, wherein: the heating pipe (32) has the structure that: the outer wall of the tube body (321) made of the non-metallic insulating material is provided with a heating film (322), and the non-metallic insulating material comprises glass, quartz stone or ceramic.

5. The energy-saving steaming cabinet capable of being rapidly heated as claimed in claim 2, wherein: the heating pipe (32) has the structure that: an insulating coating (324) is arranged on the outer wall of the metal pipe body (321), and a heating film (322) is arranged on the outer wall of the insulating coating (324);

the insulating coating (324) is a glass, quartz or ceramic coating.

6. An energy-saving steaming cabinet capable of being rapidly heated according to any one of claims 4 or 5, wherein: the outer wall of the heating pipe (32) is provided with a heat-insulating layer (323), and the heat-insulating layer (323) is a flexible temperature-resistant heat-insulating layer.

7. The energy-saving steaming cabinet capable of being rapidly heated as claimed in claim 2, wherein: the heating pipe (32) has the structure that: an insulating layer is arranged on the outer wall of the metal pipe body (321), an induction coil is arranged on the outer wall of the insulating layer, and the induction coil is electrically connected with the alternating current generating device;

the insulating layer is made of asbestos, rubber, plastics or ceramics.

8. An energy-saving steaming cabinet capable of being rapidly heated according to any one of claims 4, 5 and 7, which is characterized in that: a first pipe seat (325) and a second pipe seat (326) are arranged at two ends of the heating pipe (32);

at least one of the first pipe seat (325) and the second pipe seat (326) is connected with the pipe body (321) in a plugging mode;

the first tube seat (325) is electrically connected with the first electrode (3221), the second tube seat (326) is electrically connected with the second electrode (3222), and a circuit between the first electrode (3221) and the second electrode (3222) is arranged in a serpentine shape on the outer wall of the tube body (321).

9. The energy-saving steaming cabinet capable of being rapidly heated as claimed in claim 2, wherein: a one-way valve (91) is provided at the end of the connecting tube (9) to allow liquid to flow only from the tank (6) to the second heating tank (33).

10. The energy-saving steaming cabinet capable of being rapidly heated as claimed in claim 2, wherein: the first heating box (31) is communicated with each steaming cavity (13) of the steaming cabinet body (1) through a steam pipe (2), and a steam automatic control valve (8) and a secondary heating device (14) are arranged between each steaming cavity (13) and the steam pipe (2);

the top of the steam pipe (2) is provided with a pressure relief valve (4).

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