High temperature steam generator and high temperature steam cabinet

Abstract

The present invention discloses a high-temperature steam generator, which includes a steam source and a temperature increaser, wherein the temperature increase steam inlet of the temperature increaser is connected to the steam source, and the steam rushing out from the temperature increase steam outlet of the temperature increaser enters the cabinet, and the temperature increaser includes at least one group of heating tube groups; the heating tube group includes a steam heater, an inner tube and an outer tube, the inner tube is inserted into the outer tube, and a gap is left between the outer wall of the inner tube and the inner wall of the outer tube to form a steam return channel, the steam return channel is connected to the temperature increase steam outlet, and the inner tube is provided with a steam pipe port connecting its interior with the steam return channel, the steam heater is arranged in the inner tube, and the inner tube is connected to the temperature increase steam inlet. The present invention also discloses a high-temperature steam cabinet including a high-temperature steam generator, which includes a cabinet, and the high-temperature steam generator is arranged in the cabinet. The high-temperature steam cabinet of the present invention is provided with a high-temperature steam generator, and during use, the temperature of the steam in the cabinet is higher and the distribution of the steam is more uniform, and the processing of the physical object is more energy-saving and efficient.

Description

Technical Field

[0001] The present invention relates to a high-temperature steam generator and also relates to a high-temperature steam cabinet comprising the high-temperature steam generator. Background Art

[0002] Steamer is a commonly used kitchen equipment, and its principle is to process the food in it by the high-temperature steam generated by the steamer. The existing steamer usually has a water basin at the bottom, and the upper end of the water basin is open. The water in the water basin is heated by a heater to boil to generate steam, and the steam that naturally floats upward is directly used to steam the food in the cabinet. However, due to technical limitations, the temperature of the steam in the existing steamer can generally only reach about 105°C, which cannot reach the ideal food processing temperature, thus affecting the efficiency of food processing, and the taste of the processed food will also be lacking and the retention of nutritional components of the food will be affected.

[0003] On the other hand, the existing steam cabinet directly sets a liquid level sensor and a float valve in the water basin where steam is generated. When the water in the water basin boils, the boiling water will continuously impact the liquid level sensor and the float valve, which not only generates a large noise in the water basin, but also shortens the service life of the liquid level sensor and the automatic water replenisher. Summary of the invention

[0004] The first technical problem to be solved by the present invention is to provide a high-temperature steam generator that can effectively increase the steam temperature.

[0005] The second technical problem to be solved by the present invention is to provide a high-temperature steam cabinet with a high-temperature steam generator, which can generate higher temperature steam to process food, thereby achieving the purpose of energy saving and high efficiency.

[0006] To solve the above-mentioned first technical problem, the present invention adopts the following technical solution:

[0007] A high-temperature steam generator comprises a steam source, characterized in that: it also comprises a temperature increaser having a temperature increase steam inlet and a temperature increase steam outlet, the temperature increase steam inlet of the temperature increaser is connected to the steam source, the temperature increaser comprises at least one group of heating tube groups; the heating tube group comprises a steam heater, an inner tube and an outer tube, the inner tube is inserted into the outer tube, a gap is left between the outer wall of the inner tube and the inner wall of the outer tube to form a steam return channel, the steam return channel is connected to the temperature increase steam outlet, a steam pipe opening connecting the interior of the inner tube with the steam return channel is provided on the inner tube, the steam heater is arranged in the inner tube, the inner tube is connected to the temperature increase steam inlet; the steam entering the temperature increaser from the temperature increase steam inlet enters the inner tube and is reheated by the steam heater, the reheated steam enters the steam return channel from the steam pipe opening, the steam flows along the outer wall of the inner tube in the steam return channel to be heated again, and the steam flowing through the steam return channel comes out from the temperature increase steam outlet.

[0008] Furthermore, the steam source includes a main water tank, a water heater, an auxiliary water tank, a float valve and a liquid level sensor. The auxiliary water tank is provided with a water inlet connected to an external water source. The float valve is arranged at the water inlet. The liquid level sensor is arranged in the auxiliary water tank. The main water tank and the auxiliary water tank are arranged side by side. The bottom of the main water tank is connected to the bottom of the auxiliary water tank. The water heater is arranged in the main water tank for heating water to generate steam. A water tank steam outlet is provided at the upper part of the main water tank, and the water tank steam outlet is connected to the warming steam inlet.

[0009] Furthermore, the warming steam inlet is arranged in the middle of the warmer, the warming steam outlet is arranged on both sides of the warmer, the number of the heating tube groups is an even number, and the heating tube groups are symmetrically arranged on both sides of the warming steam inlet. When the number of the heating tube groups is an even number greater than two groups, the heating tube groups located on the same side are arranged in series with each other, and the steam will pass through the heating tube groups connected in series in sequence.

[0010] Furthermore, the temperature increaser includes four groups of heating tube groups, the power supply of the steam heaters of the two inner groups of heating tube groups is controlled by a first-speed temperature increase switch, and the power supply of the steam heaters of the two outer groups of heating tube groups is controlled by a second-speed temperature increase switch.

[0011] Furthermore, the steam heater includes a heating rod and a connecting head, one end of the inner tube is connected to the warming steam inlet, and a connecting sleeve is provided at the other end of the inner tube, the heating rod is inserted into the inner tube, and the connecting head is threadedly connected to the connecting sleeve.

[0012] Furthermore, the steam pipe opening is opened at the other end of the inner tube provided with the connecting sleeve, the other end of the inner tube provided with the connecting sleeve is sealed and connected to one end of the outer tube, and the other end of the outer tube is connected to the warming steam outlet.

[0013] Furthermore, the inner tube and the outer tube are in the shape of a circular tube or a square tube.

[0014] To solve the above second technical problem, the technical solution adopted by the present invention is as follows:

[0015] A high-temperature steam cabinet including the high-temperature steam generator is characterized in that it includes a cabinet body, the high-temperature steam generator is arranged in the cabinet body, and the steam from the heated steam outlet of the warmer enters the cabinet body for processing food in the cabinet body.

[0016] Furthermore, the temperature increaser is arranged at the bottom of the cabinet, and the steam coming out of the temperature increase steam outlet of the temperature increaser directly enters the cabinet.

[0017] Furthermore, a shelf and a steaming plate are provided in the cabinet, and the steaming plate is stacked up and down and supported in the shelf. A steam rising channel is left between the side of the shelf and the inner side of the cabinet, and part of the steam from the heated steam outlet flows through the steam rising channel.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The high-temperature steam generator of the present invention is provided with a temperature increaser. The steam is heated when passing through the inner tube of the temperature increaser and is reheated when passing through the steam return channel, thereby obtaining steam with a higher temperature. Such a double-layer heating structure can more fully absorb and utilize the heat generated by the steam heater, thereby achieving the purpose of more energy saving.

[0020] 2. The steam source of the present invention is provided with a main water tank and an auxiliary water tank. Steam is generated by boiling water in the main water tank. Water inlet and water level are controlled by the auxiliary water tank. The temperature of the water in the auxiliary water tank will be relatively low and will not boil. The float valve and the liquid level sensor are both arranged in the auxiliary water tank, thereby avoiding the situation where boiling water constantly impacts the liquid level sensor and the float valve, reducing noise and extending service life.

[0021] 3. The temperature increaser of the present invention can be symmetrically arranged, and the temperature increaser of this structure is more efficient. When the heating tube groups located on the same side are arranged in series, the steam will be heated every time it passes through a group of heating tube groups, so that the steam can be heated multiple times, so that the temperature of the steam coming out of the temperature increaser is higher.

[0022] 4. The high-temperature steam cabinet of the present invention is provided with a high-temperature steam generator, and a steam rising channel is provided between the side of the shelf and the inner side of the cabinet body. The high-temperature steam can rise along the steam rising channel, so that during use, the temperature of the steam in the cabinet body is higher and the distribution of the steam is more uniform, and the processing of the physical object is more energy-saving and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a partial cross-sectional schematic diagram of a high-temperature steam generator of the present invention;

[0024] Figure 2 is a cross-sectional schematic diagram of a temperature increaser of the present invention;

[0025] Figure 3 yes Figure 2 Schematic cross-sectional view at AA in the middle;

[0026] Figure 4 It is one of the partial cross-sectional schematic diagrams of the high-temperature steam cabinet of the present invention;

[0027] Figure 5 This is the second partial cross-sectional schematic diagram of the high-temperature steam cabinet of the present invention. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with embodiments.

[0029] like Figures 1 to 3 The high-temperature steam generator of this embodiment is shown, which includes a steam source and a temperature increaser 2. The temperature increaser 2 is provided with a temperature increase steam inlet 21 and a temperature increase steam outlet 22. The temperature increase steam inlet 21 of the temperature increaser 2 is connected to the steam source, and the steam with the temperature increased by the temperature increaser 2 comes out from the temperature increase steam outlet 22 of the temperature increaser 2.

[0030] like Figure 2 and Figure 3 As shown, the temperature increaser 2 includes at least one group of heating tube groups 23, and the heating tube group 23 includes a steam heater, an inner tube 232 and an outer tube 231. The inner tube 232 is inserted into the outer tube 231. A gap is left between the outer wall of the inner tube 232 and the inner wall of the outer tube to form a steam return channel 236. The steam return channel 236 is connected to the heating steam outlet 22. The inner tube 232 is provided with a steam pipe port 237 connecting its interior with the steam return channel 236. The steam heater is arranged in the inner tube 232, and the inner tube 232 is connected to the heating steam inlet 21.

[0031] When in use, the steam generated by the steam source enters the temperature increaser 2 from the heating steam inlet 21. The steam entering the temperature increaser from the heating steam inlet 21 enters the inner tube 232 and is reheated by the steam heater. The steam reheated by the steam heater enters the steam return channel 236 from the steam pipe mouth 237. The steam return channel 236 surrounds the outer periphery of the inner tube 232. The steam will flow along the outer wall of the inner tube 232 in the steam return channel 236. The heat dissipated from the inner tube wall will heat the steam again. The steam flowing through the steam return channel 236 comes out from the heating steam outlet 22.

[0032] The steam source of this embodiment is self-set. In order to avoid the situation where the boiling water body constantly impacts the liquid level sensor and the float valve, the steam source of this embodiment includes a main water tank 3, a water heater, a sub-water tank 4, a float valve 42 and a liquid level sensor 41. The sub-water tank 4 is provided with a water inlet 43 connected to an external water source, and the float valve 42 is arranged at the water inlet 43. The float 421 of the float valve is located in the sub-water tank 4. When the water level is lower than the set value, the float valve 42 will automatically open to control the water level. The liquid level sensor 41 is arranged in the sub-water tank 4, so that dry boiling can be avoided. The main water tank 3 and the sub-water tank 4 are arranged side by side, and the bottom of the main water tank 3 is connected to the bottom of the sub-water tank 4, so that the water level of the main water tank 3 and the water level of the sub-water tank 4 will be consistent. The water heater is arranged in the main water tank 3, which is used to heat the water body to generate steam. A water tank steam outlet 34 is provided at the upper part of the main water tank 3, and the water tank steam outlet 34 is connected to the warming steam inlet 21. When in use, water flows from the water inlet 43 into the auxiliary water tank 4, and then into the main water tank 3, and steam is generated by boiling the water in the main water tank 3. The water inlet and water level are controlled by the auxiliary water tank 4, and the temperature of the water in the auxiliary water tank 4 is relatively low and does not boil. The water heater here can be a device that generates heat through electric energy, such as a heating wire or a heating rod, or a device that generates heat through burning gas, such as a gas stove.

[0033] In this embodiment, the heating steam inlet 21 is arranged in the middle of the temperature increaser 2, and the heating steam outlets 22 are respectively arranged on both sides of the temperature increaser 2. The number of heating tube groups 23 is an even number, and the heating tube groups 23 are symmetrically arranged on both sides of the heating steam inlet 21. The steam return channels 236 of the heating tube groups 23 on both sides are respectively connected to the heating steam outlets 22 on both sides. When the number of heating tube groups 23 is an even number greater than two groups, that is, the number of heating tube groups 23 is four groups, six groups, eight groups, etc., the heating tube groups 23 on the same side are arranged in series with each other. That is, Figure 2As shown, when there are four groups, the inner tube 232 of the heating tube group closest to the warming steam inlet 21 is connected to the warming steam inlet 21 in the middle, and the steam return channel 236 of the heating tube group at the edge is respectively connected to the warming steam outlets 22 on both sides. When there are more than four groups, the inner tube 232 of the heating tube group between them is connected to the steam return channel 236 of the previous heating tube group, and the steam return channel 236 is connected to the inner tube 232 of the next heating tube group. In this way, the steam will pass through the heating tube groups 23 connected in series in sequence, so that the steam can be heated multiple times, so that the temperature of the steam coming out of the temperature increaser 2 is higher. Figures 1 to 3 The arrows in the figure show the flow path of the steam.

[0034] Specifically, the warming device 2 of this embodiment includes four groups of heating tube groups 23, the power of the steam heaters of the two groups of heating tube groups 23 located on the inner side is controlled by the first-stage warming switch 61, and the power of the steam heaters of the two groups of heating tube groups 23 located on the outer side is controlled by the second-stage warming switch 62. When the first-stage warming switch 61 is turned on, only the two groups of heating tube groups 23 on the inner side heat the steam, and at this time, the temperature of the steam coming out of the warming steam outlet 22 can reach 135°C; when the first-stage warming switch 61 and the second-stage warming switch 62 are turned on at the same time, the four groups of heating tube groups 23 all heat the steam, and the steam entering from the warming steam inlet 21 is divided into two parts, which are heated by two groups of heating tube groups 23 connected in series, and at this time, the temperature of the steam coming out of the warming steam outlet 22 can reach 180°C. It can be seen that by controlling how many heating tube groups 23 are turned on, the heating temperature of the steam by the warming device 2 can be controlled, so that it can be applied to the processing of more kinds of food. Of course, the number of heating tube groups 23 and temperature increasing switches can be increased accordingly to obtain steam of more different temperatures.

[0035] The steam heater of this embodiment includes a heating rod 233 and a connector 234. One end of the inner tube 232 is connected to the temperature-increasing steam inlet 21. A connecting sleeve 235 is provided at the other end of the inner tube 232. The heating rod 233 is inserted into the inner tube 232. The connector 234 is threadedly connected to the connecting sleeve 235. Of course, the threaded connection is sealed. Such a structure makes it more convenient to repair and replace the steam heater.

[0036] Preferably, the steam pipe opening 237 is opened at the other end of the inner tube 232 provided with the connecting sleeve, the other end of the inner tube 232 provided with the connecting sleeve is sealed and connected to one end of the outer tube 231 , and the other end of the outer tube 231 is connected to the heated steam outlet 22 .

[0037] The shapes of the inner tube 232 and the outer tube 231 of the temperature increaser 2 may be circular tubes or square tubes, or other shapes that can realize the function of the temperature increaser.

[0038] like Figure 4 and Figure 5 The high-temperature steam cabinet of this embodiment including a high-temperature steam generator is shown, which includes a cabinet body 1. The high-temperature steam generator is arranged in the cabinet body 1. The steam from the heating steam outlet of the warmer 2 enters the cabinet body 1 and is used to process the food in the cabinet body 1.

[0039] The temperature increaser 2 of this embodiment is arranged in the cabinet 1 and is located at the bottom of the cabinet 1. The steam coming out of the temperature increase steam outlet 22 will directly enter the cabinet 1 and rise naturally.

[0040] A shelf 8 and a steaming plate 9 are provided in the cabinet 1. There are multiple steaming plates 9. The steaming plates 9 are stacked up and down and placed in the shelf 8. The steaming plate 9 is used to hold food to be processed, such as rice to be steamed. A steam rising channel is left between the side of the shelf 8 and the inner side of the cabinet 1. Part of the steam from the warming steam outlet rises through the steam rising channel and enters the entire cabinet 1, so that the temperature of the steam in the cabinet 1 is higher and the distribution of the steam is more uniform. More specifically, a plurality of corresponding supporting edges 81 are respectively provided on both sides of the shelf 8, and sliding edges 91 are respectively provided on both sides of the steaming plate 9. The steaming plate 9 can slide into the shelf 8 through the sliding edges 91, and the supporting edges 81 support the sliding edges 91.

[0041] For safety, a deflation pipe 13 communicating with the interior of the cabinet is provided at the rear of the cabinet 1 , and a deflation valve 14 is provided on the deflation pipe 13 . When the pressure in the cabinet 1 exceeds a set value, the deflation valve 14 will automatically open to deflate.

[0042] More specifically, the present embodiment is provided with twelve steaming trays 9, a cabinet door 5 is provided in front of the cabinet 1, a door hinge 51 is provided on one side of the cabinet door 5, a door handle 52 is provided on one side of the cabinet door 5, and the cabinet door can be locked in front of the cabinet 1 by a door catch. A first-gear temperature increase switch 61 and a second-gear temperature increase switch 62 are provided on the top of the cabinet 1, and an indicator light 7 is also provided correspondingly. A water tank drain pipe 32 connected to the main water tank 3 is provided below the main water tank 3, a water tank drain valve 33 is provided on the water tank drain pipe 32, a cabinet drain pipe 11 connected to the bottom of the cabinet 1 is provided below the cabinet 1, and a cabinet drain valve 12 is provided on the cabinet drain pipe 11. An electric control box 10 for controlling the high-temperature steam cabinet is provided above the cabinet 1. A water level gauge 31 for displaying the water level of the main water tank and convenient for users to observe is provided in front of the main water tank 3. The main water tank 3 and the auxiliary water tank 4 of the present embodiment are arranged below the cabinet 1.

[0043] The above embodiments of the present invention are not intended to limit the protection scope of the present invention, and the implementation modes of the present invention are not limited thereto. All other modifications, replacements or changes made to the above structures of the present invention based on the above contents of the present invention, in accordance with common technical knowledge and customary means in the art, without departing from the above basic technical ideas of the present invention, should fall within the protection scope of the present invention.

Claims

1. A high temperature steam generator, comprising a steam source, characterized in that: It also includes a temperature increaser with a temperature increase steam inlet and a temperature increase steam outlet, the temperature increase steam inlet of the temperature increaser is connected to a steam source, the temperature increaser includes at least one group of heating tube groups; the heating tube group includes a steam heater, an inner tube and an outer tube, the inner tube is inserted in the outer tube, a gap is left between the outer wall of the inner tube and the inner wall of the outer tube to form a steam return channel, the steam return channel is connected to the temperature increase steam outlet, the inner tube is provided with a steam pipe opening connecting its interior with the steam return channel, the steam heater is arranged in the inner tube, and the inner tube is connected to the temperature increase steam inlet; the steam entering the temperature increaser from the temperature increase steam inlet enters the inner tube and is reheated by the steam heater, the reheated steam enters the steam return channel from the steam pipe opening, the steam flows along the outer wall of the inner tube in the steam return channel to be heated again, and the steam flowing through the steam return channel comes out from the temperature increase steam outlet; The steam source comprises a main water tank, a water heater, a subsidiary water tank, a float valve and a liquid level sensor. The subsidiary water tank is provided with a water inlet connected to an external water source, the float valve is arranged at the water inlet, the liquid level sensor is arranged in the subsidiary water tank, the main water tank and the subsidiary water tank are arranged side by side, the bottom of the main water tank is connected to the bottom of the subsidiary water tank, the water heater is arranged in the main water tank, and is used to heat water to generate steam, and a water tank steam outlet is provided at the upper part of the main water tank, and the water tank steam outlet is connected to the warming steam inlet; The steam heater includes a heating rod and a connector. One end of the inner tube is connected to the warming steam inlet. A connecting sleeve is provided at the other end of the inner tube. The heating rod is inserted into the inner tube. The connector is threadedly connected to the connecting sleeve.

2. The high temperature steam generator according to claim 1, characterized in that: The warming steam inlet is arranged in the middle of the warmer, the warming steam outlet is arranged on both sides of the warmer, the number of the heating tube groups is an even number, and the heating tube groups are symmetrically arranged on both sides of the warming steam inlet. When the number of the heating tube groups is an even number greater than two groups, the heating tube groups located on the same side are arranged in series with each other, and the steam will pass through the heating tube groups connected in series in sequence.

3. The high temperature steam generator according to claim 2, characterized in that: The temperature increaser includes four groups of heating tube groups. The power supply of the steam heaters of the two inner groups of heating tube groups is controlled by a first-speed temperature increase switch, and the power supply of the steam heaters of the two outer groups of heating tube groups is controlled by a second-speed temperature increase switch.

4. The high temperature steam generator according to claim 1, characterized in that: The steam pipe opening is opened at the other end of the inner tube provided with the connecting sleeve, the other end of the inner tube provided with the connecting sleeve is sealed and connected to one end of the outer tube, and the other end of the outer tube is connected to the warming steam outlet.

5. The high temperature steam generator according to claim 1, characterized in that: The inner tube and the outer tube are in the shape of a circular tube or a square tube.

6. A high temperature steam cabinet comprising the high temperature steam generator according to any one of claims 1 to 5, characterized in that: The cabinet comprises a cabinet, wherein the high-temperature steam generator is arranged in the cabinet, and the steam from the heated steam outlet of the temperature increaser enters the cabinet to be used for steaming the food in the cabinet.

7. The high temperature steam cabinet according to claim 6, characterized in that: The temperature increaser is arranged at the bottom of the cabinet, and the steam coming out of the temperature increase steam outlet of the temperature increaser directly enters the cabinet.

8. The high temperature steam cabinet according to claim 7, characterized in that: A shelf and a steaming plate are provided in the cabinet, the steaming plate is stacked up and down and supported in the shelf, a steam rising channel is left between the side of the shelf and the inner side of the cabinet, and part of the steam from the heated steam outlet flows through the steam rising channel.

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