CN212430957U

CN212430957U - Steam generator for frequency conversion microwave oven

Info

Publication number: CN212430957U
Application number: CN202020777362.2U
Authority: CN
Inventors: 张革; 叶立圆; 袁杰
Original assignee: Qingdao Yunlu Energy Technology Co Ltd
Current assignee: Qingdao Yunlu Energy Technology Co Ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2021-01-29
Anticipated expiration: 2030-05-12

Abstract

The utility model belongs to the technical field of steam household electrical appliances, a steam generator for frequency conversion microwave oven is related to. The utility model discloses a steam generator includes water tank, inlet tube, electromagnetic induction heater, play steam pipe and steam outlet, and the water tank includes the water storage district and is located the catch water district of water storage district top, and water storage district and catch water district communicate with electromagnetic induction heater both ends through inlet tube and play steam pipe respectively, and steam outlet sets up in the catch water district, electromagnetic induction heater includes stainless steel water pipe, heat preservation shell, skeleton, solenoid and temperature sensor, and the middle part skin of stainless steel water pipe overlaps in proper order and establishes heat preservation shell, skeleton and solenoid, and temperature sensor buries underground in the solenoid the inside, and solenoid connects the converter of variable frequency microwave oven, and temperature sensor is connected with control system. The variable-frequency steam generator adopts electromagnetic induction heating to generate high-temperature steam for cooking, and solves the problems of low heating speed, low efficiency and the like of the existing electric heating tube and electric heating film.

Description

Steam generator for frequency conversion microwave oven

Technical Field

The utility model belongs to the technical field of steam household electrical appliances, a food is cooked and is used steam generator is related to, in particular to steam generator for frequency conversion microwave oven.

Background

Compared with the traditional microwave oven, the variable frequency microwave oven has the advantages of good cooking effect, energy conservation, high efficiency and the like, and is more and more accepted by the public. Steam microwave ovens have been widely used in domestic kitchens over the years of development. At present, a steam generator for a steam microwave oven is heated by an electric heating tube or an electric heating film, and has the defects of low heating speed, low heat efficiency and the like. The electromagnetic induction heating has the advantages of high heating speed, high heat efficiency and the like. Therefore, the water in the steam generator can be heated into steam by an electromagnetic induction heating mode through a frequency converter on the frequency conversion microwave oven.

An industrial frequency conversion energy-saving steam generator is described in patent CN 201821424158.1. But at present, the following problems exist: (1) the electromagnetic coil is only directly wound outside the heating pipe, and has no framework and a heat preservation device, so that batch production cannot be carried out, and the electromagnetic coil is easy to burn out due to over-temperature; (2) the water pump is adopted to directly inject water into the heating pipe, so that the water level condition in the heating pipe cannot be accurately controlled, and the water injection and dry burning conditions are easy to occur; (3) according to the scheme, the electromagnetic coils are uniformly wound, and the heat absorption capacity of the upper part of the heating pipe is small, so that overheating is easily caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steam generator for frequency conversion microwave oven utilizes the converter of taking certainly in the frequency conversion microwave oven, adopts electromagnetic induction heating to produce high-temperature steam and supplies to boil and eat the use, has solved that current electrothermal tube and electrothermal film rate of heating are slow, inefficiency scheduling problem.

In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:

the utility model provides a pair of steam generator for variable frequency microwave oven, including water tank, inlet tube, electromagnetic induction heater, play steam pipe and steam outlet, the water tank includes the water storage district and is located the catch water district of water storage district top, and water storage district and catch water district communicate with electromagnetic induction heater both ends through inlet tube and play steam pipe respectively, and steam outlet sets up in the catch water district, electromagnetic induction heater includes stainless steel water pipe, heat preservation shell, skeleton, solenoid and temperature sensor, and the middle part skin of stainless steel water pipe is overlapped in proper order and is established heat preservation shell, skeleton and solenoid, and temperature sensor buries underground in the solenoid the inside, and solenoid connects variable frequency microwave oven's converter, and temperature sensor is connected with control system.

Furthermore, the electromagnetic coil is wound on the framework, and the winding density of the electromagnetic coil gradually changes from dense to sparse from the direction of the water inlet pipe to the direction of the steam outlet pipe.

Furthermore, the two ends of the heat preservation shell and the two ends of the framework are respectively provided with a separation blade fixedly connected to the stainless steel water pipe, and the separation blades are used for fixing the relative positions of the heat preservation shell and the framework on the stainless steel water pipe.

Furthermore, at least one baffle plate is arranged inside the steam-water separation area.

Furthermore, the steam generator is a horizontal steam generator, the steam outlet is arranged at the top of the water tank, and the water inlet pipe and the steam outlet pipe are arranged at the bottom of the water tank.

Furthermore, the steam generator is a vertical steam generator, the steam outlet is formed in the left wall of the top of the water tank, the steam outlet pipe is formed in the opposite side wall of the steam outlet, and the water inlet pipe is formed in the bottom of the water tank.

Adopt above-mentioned technical scheme, the beneficial effects of the utility model are that:

(1) the utility model discloses utilize the converter of taking certainly in the frequency conversion microwave oven, need not additionally to increase the converter, solved current electrothermal tube and electrothermal film rate of heating slow, the inefficiency scheduling problem simultaneously. The steam outlet time of the conventional electric heating tube steam generator is about 30s, and the electromagnetic induction steam generator only needs 10 s; the heat efficiency of the conventional electric heating tube steam generator is generally lower than 90%, and the heat efficiency of the electromagnetic induction steam generator can reach more than 98%.

(2) The utility model discloses can also magnetize and soften water when utilizing electromagnetic induction heating water, the looseness of multiplicable incrustation scale makes the incrustation scale wash more convenient, promotes steam generator's life.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic view showing a steam generator for a variable frequency microwave oven according to example 1;

FIG. 2 is a flow distribution diagram of a steam generator for a variable frequency microwave oven according to example 1;

FIG. 3 is a schematic view showing a steam generator for a variable frequency microwave oven according to example 2;

fig. 4 is a schematic structural view of an electromagnetic induction heater of embodiment 2;

the respective symbols in the figure are as follows: 1-a water tank; 2-water inlet pipe; 3-an electromagnetic induction heater; 4-a steam outlet pipe; 5-a steam outlet; 301-stainless steel water pipe; 302-baffle plate; 303-heat preservation shell; 304-a temperature sensor; 305-a skeleton; 306-electromagnetic coil.

Detailed Description

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The present invention will be further explained with reference to the accompanying drawings.

Example 1

As shown in fig. 1 and fig. 2, the steam generator for the variable frequency microwave oven provided in this embodiment can adopt a horizontal installation mode according to different installation spaces of the microwave oven. The steam generator comprises a water tank 1, a water inlet pipe 2, an electromagnetic induction heater 3, a steam outlet pipe 4 and a steam outlet 5. The water tank comprises a water storage area and a steam-water separation area positioned above the water storage area, and the water storage area and the steam-water separation area are respectively communicated with the two ends of the electromagnetic induction heater through a water inlet pipe and a steam outlet pipe. The steam outlet is arranged at the top of the water tank, and the water inlet pipe and the steam outlet pipe are arranged at the bottom of the water tank.

The electromagnetic induction heater comprises a stainless steel water pipe 301, a heat preservation shell 303, a framework 305, an electromagnetic coil 306 and a temperature sensor 304, wherein the heat preservation shell, the framework and the electromagnetic coil are sequentially sleeved on the outer layer of the middle part of the stainless steel water pipe, the temperature sensor is embedded in the electromagnetic coil, the electromagnetic coil is connected with a frequency converter of the variable frequency microwave oven, and the temperature sensor is connected with a control system. When the control system receives that a user needs to adopt a steam function, the frequency converter is controlled to generate 10-30 KHz power supply frequency, an alternating magnetic field is generated in the electromagnetic coil, alternating current is generated in the stainless steel water pipe to generate heat, and therefore water in the pipe is heated into steam.

The control system transmits the temperature sensor signal and controls the frequency converter, which are common means in the prior art.

The temperature sensor is embedded in the electromagnetic coil and used for monitoring the temperature of the coil, and the steam generator is powered off when the temperature exceeds the standard so as to prevent the coil from being burnt out due to over-temperature. The control system controls the temperature sensor as is conventional in the art.

The heat preservation shell is positioned in the framework to prevent the framework or the electromagnetic coil from being burned out due to high temperature and overheating of the stainless steel water pipe when the steam generator works.

The two ends of the heat preservation shell and the two ends of the framework are respectively provided with a baffle 302 fixedly connected on the stainless steel water pipe, and the baffles are used for fixing the relative positions of the heat preservation shell and the framework on the stainless steel water pipe so as to ensure the performance consistency of the steam generator. The baffle plate can be fixed on the stainless steel water pipe in a welding mode.

The electromagnetic coil is wound on the framework, and the winding density of the electromagnetic coil gradually changes from dense to sparse from the direction of the water inlet pipe to the direction of the steam outlet pipe. Because the stainless steel water pipe is at the in-process that produces high temperature steam, the anterior segment heat absorption capacity is big, and the back end heat absorption capacity is few, and the solenoid of this embodiment is from left to right by dense change sparse, and anterior segment power density is big, and back end power density is little, can prevent that the stainless steel water pipe rear end from appearing overheated.

At least one baffle plate is arranged in the steam-water separation area.

The working principle of the steam generator is as follows: water in the water storage area of the water tank enters the electromagnetic induction heater through the water inlet pipe and is heated into high-temperature steam or steam-water mixture, then the high-temperature steam or the steam-water mixture enters the steam-water separation area in the water box through the steam outlet pipe, water drops in the steam are separated and flow back to the water storage area of the water box, and dry steam flows out from a steam outlet on the water box.

Example 2

As shown in fig. 3 and 4, the present embodiment provides a steam generator for a variable frequency microwave oven, which is different from embodiment 1 in that a vertical installation manner is adopted, a steam outlet is disposed on a left wall of a top of a water tank, a steam outlet pipe is disposed on an opposite side wall of the steam outlet, and a water inlet pipe is disposed at a bottom of the water tank.

The embodiment is suitable for the frequency conversion microwave oven with the steam generator arranged on the side wall.

It is to be understood that the present invention has been described in detail with reference to the foregoing embodiments, and that modifications and equivalents of the various embodiments described above may be made by those skilled in the art, or some of the technical features may be substituted. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A steam generator for a variable frequency microwave oven comprises a water tank (1), a water inlet pipe (2), an electromagnetic induction heater (3), a steam outlet pipe (4) and a steam outlet (5), wherein the water tank (1) comprises a water storage area and a steam-water separation area positioned above the water storage area, the water storage area and the steam-water separation area are respectively communicated with two ends of the electromagnetic induction heater (3) through the water inlet pipe (2) and the steam outlet pipe (4), and the steam outlet (5) is arranged in the steam-water separation area, and is characterized in that the electromagnetic induction heater (3) comprises a stainless steel water pipe (301), a heat preservation shell (303), a framework (305), an electromagnetic coil (306) and a temperature sensor (304), the heat preservation shell (303), the framework (305) and the electromagnetic coil (306) are sequentially sleeved on the outer layer of the middle of the stainless steel water pipe (301), and the temperature sensor (, the electromagnetic coil (306) is connected with a frequency converter of the variable frequency microwave oven, and the temperature sensor (304) is connected with the control system.

2. The steam generator for the variable frequency microwave oven as claimed in claim 1, wherein the electromagnetic coil (306) is wound on the frame (305), and the winding density of the electromagnetic coil (306) gradually changes from dense to sparse from the direction of the water inlet pipe (2) to the direction of the steam outlet pipe (4).

3. The steam generator for the variable frequency microwave oven according to claim 2, wherein the insulation shell (303) and the framework (305) are respectively provided at two ends with a baffle (302) fixedly connected to the stainless steel water pipe (301), and the baffle (302) is used for fixing the relative positions of the insulation shell (303) and the framework (305) on the stainless steel water pipe (301).

4. The steam generator for the variable frequency microwave oven as claimed in claim 2, wherein at least one baffle plate is provided inside the steam-water separation region.

5. Steam generator for variable frequency microwave oven according to any of claims 1 to 4, characterized in that it is a horizontal steam generator, the steam outlet (5) is placed on top of the water tank (1), and the water inlet pipe (2) and the steam outlet pipe (4) are placed on the bottom of the water tank (1).

6. Steam generator for variable frequency microwave oven according to any of claims 1 to 4, characterized in that it is a vertical steam generator, the steam outlet (5) is provided on the top left wall of the water tank (1), the steam outlet pipe (4) is provided on the opposite side wall of the steam outlet (5), and the water inlet pipe (2) is provided on the bottom of the water tank (1).