CN116035425A - Steam generator with multi-stage water vapor separation - Google Patents

Abstract

The invention provides a steam generator with multistage water-vapor separation, which belongs to the technical field of steam ovens, and comprises a steam generator main body, a water-vapor separation structure and a heating device, wherein the steam generator main body comprises a shell and a cover plate which is arranged on the top of the shell, the shell comprises a bottom wall, a first side wall, a second side wall, a third side wall and a fourth side wall, the first side wall is provided with a water inlet hole and a water outlet hole, the water inlet hole is communicated with tap water, and the water outlet hole is communicated with the water inlet hole; the steam-water separation structure divides the inner part of the steam generator main body into a first-stage heating cold area, a first-stage heating hot area, a second-stage heating hot area and a condensation area which are sequentially communicated, a water inlet is communicated with the first-stage heating cold area, and a gas outlet is communicated with the condensation area; the heating device is arranged in the primary heating cold area, the primary heating hot area and the secondary heating hot area. The invention can separate water and steam for multiple times, avoid the simultaneous spraying of water and steam and improve the quality of the steam output by the evaporator.

Description

Steam generator with multi-stage water vapor separation

technical field

The invention relates to the technical field of steam ovens, in particular to a steam generator with multi-stage water vapor separation.

Background technique

In the prior art, the water vapor separation structure of many evaporators is unreasonable, which increases the difficulty of water vapor separation, makes the evaporator easy to spray water, and then reduces the quality of the steam, increases the water consumption of the evaporator, lengthens the cooking time, and increases the nutritional loss of food materials. , the taste and color of the ingredients become worse.

Contents of the invention

The object of the present invention is to provide a steam generator with multi-stage water vapor separation, through which the water vapor separation structure and the heating device can carry out multiple water vapor separations, avoiding the simultaneous ejection of water and steam, and reducing the water consumption of the evaporator , improve the quality of steam output by the evaporator and shorten the cooking time.

For realizing the object of the present invention, the present invention adopts following technical scheme:

According to one aspect of the present invention, a steam generator with multi-stage water-steam separation is provided. The steam generator with multi-stage water vapor separation includes:

The main body of the steam generator includes a casing and a cover plate covering the top of the casing, wherein the casing includes a bottom wall and a first side wall, a second side wall, and a bottom wall connected to the bottom wall in turn. The third side wall and the fourth side wall, the first side wall is provided with a water inlet hole and an air outlet hole, wherein the water inlet hole is connected to tap water, and the air outlet hole is connected to the water inlet hole;

Water vapor separation structure, wherein, the water vapor separation structure divides the interior of the steam generator body into a primary heating cold area, a primary heating hot area, a secondary heating hot area and a condensation area, and the water inlet The holes are connected to the primary heating and cold zone, and the air outlet holes are connected to the condensation zone;

Heating devices, arranged in the primary heating cold zone, the primary heating hot zone and the secondary heating hot zone;

Wherein, the tap water flows into the primary heating cold zone through the water inlet hole, and is heated by the heating device to form warm water, and the warm water enters the primary heating hot zone for reheating to form wet water. Saturated steam, the wet saturated steam enters the secondary heating zone for reheating to evaporate water to form dry saturated steam, the dry saturated steam flows through the condensation zone and is ejected out of the housing.

According to an embodiment of the present invention, wherein the water vapor separation structure includes:

a first separation plate, the bottom of which is fixed to the bottom wall, and the two ends are respectively fixed to the first side wall and the third side wall of the housing;

The second separation plate, the bottom is fixed to the bottom wall, the top is fixed to the cover plate, and both ends are respectively fixed to the second side wall and the first separation plate;

A third separation plate, the bottom of which is fixed to the bottom wall, the top of which is fixed to the cover plate, and both ends are respectively connected to the first separation plate and the fourth side wall;

Wherein, the interior of the housing is divided into the primary heating cold zone, the primary heating hot zone, and the primary heating zone by the first separating plate, the second separating plate and the third separating plate. secondary heating hot zone and said condensation zone;

A liquid passage hole and a second separation plate ventilation hole are opened on the second separation plate, wherein the liquid passage hole is close to the second side wall, so that the warm water in the primary heating cold zone flows into the second separation plate. In the primary heating hot zone, the second separation plate vent hole is close to the side of the first separation plate, so that the unsaturated water vapor formed during the heating process in the primary heating cold zone flows into the primary heating hot zone;

The top of the first separation plate between the primary heating zone and the secondary heating zone is provided with a first separation plate ventilation hole, so that the moisture in the primary heating zone is saturated Steam flows into the secondary heating hot zone through the vent hole of the first separation plate;

The third separation plate is provided with a third separation plate through hole, so that the dry saturated steam flows into the condensation zone.

According to an embodiment of the present invention, wherein, the housing is further provided with a water level probe, one end of the water level probe is fixedly connected to the end of the fourth side wall close to the first side wall, and the other One end extends through the first separation plate to the primary heating cold zone for measuring the liquid level of the primary heating cold zone;

The liquid level of the primary heating cold zone is located below the vent holes of the first separation plate and the vent holes of the second separation plate.

According to an embodiment of the present invention, wherein, the ratio of the area of the ventilation hole of the first separation plate to the area of the air outlet hole is b, where 1<b≤2;

The ratio of the area of the liquid outlet hole to the water inlet hole is greater than 5;

The area ratio of the through hole of the second separation plate to the air outlet hole is greater than 1/3;

The ratio of the area of the through hole of the third separation plate to the area of the air outlet hole is c, where 1<b≤2, so that the dry saturated steam quickly fills the condensation area and sprays from the air outlet out.

According to an embodiment of the present invention, wherein the water vapor separation structure further includes a water retaining strip corresponding to the air hole of the first separation plate, the top surface of the water retaining strip is fixedly connected to the bottom surface of the cover plate, Part of the molecules in the wet saturated steam condense to form a saturated liquid, and the water retaining strip is used to prevent the saturated liquid from flowing into the secondary heating area;

The condensing area is provided with a condensed water separator corresponding to the air outlet to prevent condensed water from spraying out from the air outlet.

According to an embodiment of the present invention, wherein the heating device includes:

The primary heating assembly is arranged in the primary heating cold zone and the primary heating hot zone, and includes a first heating tube cover and a primary heating tube, wherein the first heating tube cover is fixed to the bottom wall, The primary heating tube is arranged in the first heating tube cover;

The secondary heating assembly is arranged in the secondary heating hot zone, and includes a second heating pipe cover and a secondary heating pipe, wherein the secondary heating pipe is arranged in the second heating pipe cover.

According to an embodiment of the present invention, wherein the heating device further includes:

The first heating plate group is located in the primary heating cold zone and is fixedly connected to the first heating tube cover for heating the tap water and forming the warm water;

The second heating plate group is located in the primary heating zone and fixedly connected to the first heating pipe cover, and is used to continue heating the warm water to form the moist saturated steam;

The third heating plate group is located in the secondary heating area and is fixedly connected to the second heating pipe cover, and is used for reheating to evaporate water to form the dry saturated steam.

According to an embodiment of the present invention, wherein the first heating plate group includes a first horizontal plate, a first vertical plate perpendicular to the first horizontal plate, and a vertical plate, wherein the vertical plate is fixed to On the first vertical plate away from the water level probe, part of the warm water can boil at the vertical plate to generate unsaturated water vapor, and the unsaturated water vapor passes through the vertical plate and the channel. The air hole enters the first-level heating hot zone to prevent misjudgment of the water level probe;

The second heating plate group includes a second horizontal plate, a second vertical plate and a third vertical plate, wherein the second vertical plate and the third vertical plate have different heights and are respectively perpendicular to The second horizontal plate is used to increase the heat exchange area between the primary heating tube and the warm water;

The third heating plate group includes a plurality of heating plates, wherein the plurality of heating plates are distributed in a grid shape, and are used to increase the heat exchange area between the water vapor and the secondary heating tube, so as to improve the Dryness and temperature of dry saturated steam.

According to an embodiment of the present invention, wherein, the second vertical board and the third vertical board are multiple, and the multiple second vertical boards and the third vertical boards are distributed at intervals ;

Wherein, the ratio of the height of the second vertical plate to the height of the third vertical plate is 0.3-0.8, so that the warm water boils between the two third vertical plates, and the The wet saturated steam rises along the third vertical plate, and the second vertical plate is used to control the temperature of the warm water after boiling.

According to an embodiment of the present invention, wherein, the ends of the second vertical plate and the third vertical plate close to the first separation plate are provided with arc-shaped portions, and the arc-shaped portions are used for the The wet saturated steam is guided to the first heating tube cover to realize water vapor separation;

The ratio of the power of the primary heating tube to the power of the secondary heating tube is 1-3.

An embodiment of the present invention has the following advantages or beneficial effects:

In the steam generator with multi-stage water vapor separation of the present invention, the interior of the evaporator main body is divided into a primary heating cold area, a primary heating hot area, and a secondary heating heat area through the water vapor separation structure and the heating device. Zone and condensation zone, can separate water vapor multiple times, avoid water and steam spraying out at the same time, reduce water consumption of the evaporator, improve the quality of steam output by the evaporator, and shorten the cooking time.

Through the height difference and interval distribution between the second vertical plate and the third vertical plate in the secondary heating hot zone, the water level height during boiling can be controlled, and at the same time, the wet saturated steam can flow along the third vertical plate. The plate rises to enable efficient water vapor separation.

Description of drawings

The above and other features and advantages of the present invention will become more apparent by describing in detail example embodiments thereof with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of a steam generator with multi-stage water-steam separation according to an exemplary embodiment.

Fig. 2 is a cross-sectional view of a steam generating device with multi-stage water vapor separation according to an exemplary embodiment.

Fig. 3 is a schematic diagram showing connections of a housing, a water vapor separation structure, a heating assembly and a water level probe according to an exemplary embodiment.

Fig. 4 is a schematic diagram showing connections of a housing, a water vapor separation structure and a heating assembly according to an exemplary embodiment.

Wherein, the reference signs are explained as follows:

1. Shell; 11. Primary heating cold zone; 12. Primary heating hot zone; 13. Secondary heating hot zone; 14. Condensation zone; 141. Condensed water separator; 100. Water inlet hole; stomata;

2. Cover plate;

3. Water vapor separation structure; 31. First separation plate; 311. Vent hole of the first separation plate; 32. Second separation plate; 321. Liquid hole; 33. Third separation plate; 34. Water retaining bar;

4. Heating device; 41. Primary heating assembly; 411. First heating tube cover; 412. Primary heating tube; 42. Secondary heating component; 421. Second heating tube cover; 422. Secondary heating tube; 43 , the first heating plate group; 431, the first horizontal plate; 432, the first vertical plate; 433, the vertical plate; 44, the second heating plate group; 441, the second horizontal plate; 442, the second vertical plate ; 443, the third vertical plate; 45, the third heating plate group; 451, the heating plate;

5. Water level probe; 6. Temperature controller.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

The terms "a", "an", "the", "said" are used to indicate the presence of one or more elements/components/etc; the terms "comprising" and "have" are used to indicate an open-ended inclusion means and means that additional elements/components/etc. may be present in addition to the listed elements/components/etc.

As shown in Figures 1 to 4, Figure 1 shows a schematic diagram of a steam generator with multi-stage water vapor separation provided by the present invention. Fig. 2 shows a cross-sectional view of a steam generator with multi-stage water-steam separation provided by the present invention. FIG. 3 shows a schematic diagram of the housing 1 , the water vapor separation structure 3 , the heating assembly 4 and the water level probe 5 provided by the present invention. Fig. 4 shows a schematic connection diagram of the casing 1, the water vapor separation structure 3 and the heating assembly 4 provided by the present invention.

An embodiment of the present invention is used for gas supply and exhaust gas wall-hung boilers. The steam generator with multi-stage water vapor separation includes: a main body of the steam generator, including a casing 1 and a cover plate on the top of the casing 1 2, wherein, the housing 1 includes a bottom wall and a first side wall, a second side wall, a third side wall and a fourth side wall sequentially connected to the bottom wall, and the first side wall is provided with a water inlet 100 and an outlet Air holes 101, wherein the water inlet hole 100 is connected to tap water, and the air outlet hole 101 is connected to the water inlet hole 100;

Water vapor separation structure 3, wherein, the water vapor separation structure 3 divides the interior of the main body of the steam generator into a primary heating cold zone 11, a primary heating hot zone 12, a secondary heating hot zone 13, and a condensation zone 14, which are successively connected. The hole 100 is connected to the primary heating cold zone 11, and the air outlet 101 is connected to the condensation zone 14;

The heating device 4 is arranged in the primary heating cold zone 11, the primary heating hot zone 12 and the secondary heating hot zone 13;

Wherein, tap water flows into the primary heating cold zone 11 through the water inlet hole 100, and is heated by the heating device 4 to form warm water, and the warm water enters the primary heating hot zone 12 for reheating to form wet saturated steam, and the wet saturated steam enters the secondary The stage heating hot zone 13 is reheated to evaporate water to form dry saturated steam, and the dry saturated steam flows through the condensation zone 14 and is sprayed out of the shell 1 .

Among them, the cover plate 2 is set on the top of the shell 1, and the shell 1 and the cover plate 2 are fixed by bolts, which is convenient for installation, inspection and maintenance of the components in the shell 1, and the main body of the steam generator is separated by the water vapor separation structure 3 The inside is divided into 4 zones, which are the primary heating cold zone 11, the primary heating hot zone 12, the secondary heating hot zone 13 and the condensation zone 14, so that the tap water flows into the primary heating cold zone 11 through the water inlet 100 , and heated by heating device 4 to form warm water. Warm water in this embodiment refers to water whose temperature is higher than room temperature and lower than boiling point. Unsaturated water vapor will be generated in the process of tap water becoming warm water. In addition, warm water and unsaturated water vapor enter In the primary heating zone 12, warm water and unsaturated steam are reheated in the primary heating zone 12 to form wet saturated steam. At this time, the wet saturated steam enters the secondary heating zone 13 for reheating to evaporate the water to form Dry saturated steam, dry saturated steam enters the condensation zone 14 and sprays out the shell 1, and the evaporator main body is divided into a primary heating cold zone 11, a primary heating hot zone 12, and a secondary heating zone 12 through the water vapor separation structure 3 and the heating device 4. Heating the hot zone 13 and the condensation zone 14 can separate the evaporator for multiple times of water vapor, avoiding the simultaneous spraying of water and steam, because the water sprayed out of the evaporator will affect the taste or quality of food, and will also condense in the cavity of the steaming oven To form accumulated water, the present invention can reduce the water consumption of the evaporator through the multi-stage separation of water vapor, improve the quality of the steam output by the evaporator, shorten the cooking time, increase the moisture content of the food, reduce the hardness of the food, improve the chewiness, and retain more Many nutrients.

In addition, the main body of the steam generator is also equipped with a temperature controller 6. In this embodiment, no less than three temperature controllers 6 are used to measure the primary heating cold zone 11, the primary heating hot zone 12, and the secondary heating thermal zone. 13 temperature, the temperature can be used to feed back the status of the primary heating cold zone 11, the primary heating hot zone 12, and the secondary heating hot zone 13. Check for other failures within the container. In addition, steam can be generated with maximum efficiency only at an appropriate temperature, and the through-hole temperature controller 6 can adjust the output power of the heating device 4 in time, thereby reducing the cooking time.

In a preferred embodiment of the present invention, the water vapor separation structure 3 includes:

The first separation plate 31, the bottom is fixed to the bottom wall, and the two ends are respectively fixed to the first side wall and the third side wall of the housing 1;

The second separation plate 32, the bottom is fixed to the bottom wall, the top is fixed to the cover plate 2, and both ends are respectively fixed to the second side wall and the first separation plate 31;

The third separation plate 33, the bottom is fixed to the bottom wall, the top is fixed to the cover plate 2, and both ends are respectively connected to the first separation plate 31 and the fourth side wall;

Wherein, the first separation plate 31 is located between the primary heating cold zone 11, the primary heating hot zone 12, the secondary heating hot zone 13 and the condensation zone 14, and the second separating plate 32 is located between the primary heating cold zone 11 and the primary heating zone 14. Between the heating hot zones 12, the third separation plate 33 is located between the secondary heating hot zone 13 and the condensation zone 14, and the inside of the housing 1 is separated by the first separation plate 31, the second separation plate 32 and the third separation plate 33. Part of it is a primary heating cold zone 11, a primary heating hot zone 12, a secondary heating hot zone 13 and a condensation zone 14;

The second separation plate 32 is provided with a liquid passage hole 321 and a second separation plate ventilation hole, wherein the liquid passage hole 321 is close to the second side wall, so that the warm water in the primary heating cold zone 11 flows into the primary heating hot zone 12, The vent hole of the second separation plate is close to the side of the first separation plate 31, so that the unsaturated water vapor formed in the heating process of the primary heating cold zone 11 flows into the primary heating hot zone 12;

The top of the first separating plate 31 between the primary heating hot zone 12 and the secondary heating thermal zone 13 is provided with a first separating plate ventilation hole 311, so that the water vapor with moisture in the primary heating thermal zone 12 passes through the second A separation plate ventilation hole 311 flows into the secondary heating hot zone 13;

The third separation plate 33 is provided with a third separation plate through hole, so that the dry saturated steam flows into the condensation zone 14 .

The housing 1 is also provided with a water level probe 5, one end of the water level probe 5 is affixed to the end of the fourth side wall close to the first side wall, and the other end passes through the first separation plate 31 and extends to the primary heating and cooling zone 11 , used to measure the liquid level of the primary heating cold zone 11 , and the water level of the primary heating cold zone 11 is located below the vent hole 311 of the first separation plate.

As shown in Figures 3-4, the water vapor separation structure 3 realizes partitioning of the main body of the evaporator through the first separation plate 31, the second separation plate 32 and the third separation plate 33; Warm water and non-humidity-saturated steam will be formed at the same time. The second separation plate 32 is provided with a liquid passage hole 321 and a second separation plate vent hole. The liquid passage hole 321 is close to the second side wall, that is, above the heating device 4. The second separation plate The plate vent hole is located on the second separation plate 32 on the side close to the first separation plate 31, and the liquid passage hole 321 is located obliquely below the second separation plate vent hole, that is, the height of the liquid passage hole 321 from the bottom of the housing 1 is smaller than that of the second separation plate. The height of the air holes of the two separation plates from the bottom of the housing 1, in addition, makes the warm water in the primary heating cold zone 11 flow into the primary heating hot zone 12 through the liquid hole 321, and at the same time, the non-toxic water formed during the heating process of the primary heating cold zone 11 Saturated water vapor flows into the primary heating zone 12 through the vent hole of the second separation plate and the first separation plate 31 to realize the preliminary separation of water vapor;

The first-stage heating zone 12 continues to heat and boil the warm water. As the warm water gradually boils, the water molecules move upwards, some of the water molecules condense, and some of the water molecules pass through the vent hole 311 of the first separation plate in gaseous state. After boiling, the water molecules are vaporized and The condensation is basically balanced to form wet saturated steam, and the wet saturated steam enters the secondary heating hot zone 13 through the vent hole 311 of the first separation plate;

The secondary heating hot zone 13 continues to heat the wet saturated steam, so that the moisture in the wet saturated steam can continue to evaporate to form dry saturated steam, which flows into the condensation zone 14 through the third separation plate 33 to condense and spray out of the shell 1 Enter into the cavity of the steam oven to heat and dry the food.

In this embodiment, by setting the water level probe 5 to measure the liquid level of the primary heating cold zone 11, in this embodiment, the water level probe 5 can simultaneously measure the minimum liquid level and the highest level of the primary heating cold zone 11 measured by the water level probe 5. Liquid level, the controller on the evaporator or the steam oven can control the water inlet speed and the water inlet volume of the water inlet 100 at the minimum liquid level and the maximum liquid level, so that the liquid level in the evaporator main body is always at the minimum liquid level and the maximum liquid level In between, avoid too little water to affect product performance, and also avoid too much water, causing too much water to be sprayed out of the evaporator, affecting the steam quality of the evaporator.

Wherein, the lowest liquid level and the highest liquid level are the setting values of the evaporator, in addition, the lowest point of the liquid passage hole 321 is located below the lowest liquid level, and the lowest point of the through hole of the second separation plate is located above the highest liquid level, so that The warm water generated in the primary heating cold zone 11 can only enter the primary heating hot zone 12 through the overnight hole 321. At the same time, the highest liquid level should be located below the vent hole 311 of the first separation plate to prevent water from entering the secondary heating hot zone 13.

In a preferred embodiment of the present invention, the ratio of the area of the vent hole 311 of the first separation plate to the area of the vent hole 101 is b, where 1<b≤2;

The area ratio of the liquid outlet hole 321 to the water inlet hole 100 is greater than 5;

The area ratio of the through hole of the second separation plate to the air outlet hole 101 is greater than 1/3;

The ratio of the area of the through hole of the third separation plate to the area of the outlet hole 101 is c, where 1<b≤2, so that the dry saturated steam quickly fills the condensation zone 14 and is ejected from the outlet hole 101 .

As shown in Figure 3-4, tap water enters the primary heating cold zone 11 through the water inlet hole 100, and the area ratio of the liquid passing hole 321 to the water inlet hole 100 is greater than 5, so that the warm water in the primary heating cold zone 11 can smoothly flow into the primary heating zone. Heating hot zone 12; the area ratio of the through hole of the second separation plate to the air outlet hole 101 is greater than 1/3, which can make the unsaturated air in the primary heating cold zone 11 quickly enter the primary heating hot zone 12, avoiding damage to the water level probe 5 Influence.

As the temperature of the primary heating hot zone 12 continues to rise, the pressure in the primary heating hot zone 12 continues to increase, and the first separation plate vent hole 311 is arranged near the third side wall, and the first separation plate vent hole 311 It can be multiple, and the area ratio of the area of the vent hole 311 of the first separation plate to the area of the vent hole 101 is b, wherein, 1<b≤2, preferably 1.1 to 1.2, the vent hole 311 of the first separation plate makes one level The gas in the heating hot zone 12 smoothly flows into the secondary heating hot zone 13 and can be fully heated in the secondary heating hot zone 13 at the same time.

The ratio of the area of the through hole of the third separation plate to the area of the outlet hole 101 is c, where 1<b≤2, so that the dry saturated steam quickly fills the condensation zone 14 and is ejected from the outlet hole 101 .

In a preferred embodiment of the present invention, the water vapor separation structure 3 also includes a water retaining strip 34 corresponding to the vent hole 311 of the first separation plate, the top surface of the water retaining strip 34 is fixed on the bottom surface of the cover plate 2, and the wet saturated steam Part of the molecules in the middle condense to form a saturated liquid, and the water retaining strip 34 is used to prevent the saturated liquid from flowing into the secondary heating hot zone 13;

The condensing area 14 is provided with a condensed water separator 141 corresponding to the air outlet 101 for preventing condensed water from spraying out from the air outlet 101 .

As shown in Figures 1-4, during the heating process of the primary heating hot zone 12, the steam molecules condense in contact with the liquid surface, the bottom surface of the shell 1 or the cover plate 2 to form a saturated liquid, and the water retaining strip 34 can prevent the saturated liquid from entering the second stage. In this embodiment, the water-retaining strip 34 should be kept at a certain distance from the first separating plate 31. At the same time, the projection of the water-retaining strip 34 on the first separating plate 31 can partially or completely cover the first separating plate. The ventilation holes 311 prevent the steam molecules with moisture from entering the secondary heating hot zone 13 so far.

In addition, the dry saturated steam can form condensed water with the container wall at the condensation zone 14, and the condensed water separator 141 can prevent the condensed water from spraying out of the air outlet 101, and can improve the quality of the steam.

In a preferred embodiment of the present invention, the heating device 4 includes:

The primary heating assembly 41 is arranged in the primary heating cold zone 11 and the primary heating hot zone 12, and includes a first heating tube cover 411 and a primary heating tube 412, wherein the first heating tube cover 411 is fixed to the bottom wall, The primary heating tube 412 is arranged in the first heating tube cover 411;

The secondary heating assembly 42 is disposed in the secondary heating hot zone 13 and includes a second heating pipe cover 421 and a secondary heating pipe 422 , wherein the secondary heating pipe 422 is disposed in the second heating pipe cover 421 .

The heating device 4 also includes:

The first heating plate group 43 is located in the primary heating cold zone 11 and is fixedly connected to the first heating tube cover 411 for heating tap water and forming warm water;

The second heating plate group 44 is located in the primary heating zone 12 and is fixedly connected to the first heating pipe cover 411 for continuing to heat the warm water to form wet saturated water vapor;

The third heating plate group 45 is located in the secondary heating hot zone 13 and is fixedly connected to the second heating tube cover 421 for reheating to evaporate water to form dry saturated steam.

As shown in Figure 3-4, the first heating tube cover 411 passes through the first side wall and the third side wall, the primary heating tube 412 is inserted into the first heating tube cover 411, and the primary heating tube 412 passes through the first heating plate The group 43 heats the tap water in the primary heating cold zone 11 and forms warm water. The warm water enters the primary heating hot zone 12 through the liquid passage hole 321, and the water in the primary heating hot zone 12 boils through the second heating plate group 44 to form wet saturation. steam;

The second heating tube cover 421 passes through the third side wall and the fourth side wall located in the secondary heating hot zone 13, and the secondary heating tube 422 is inserted in the second heating tube cover 421, and the third heating plate group 45 continues to elevate the humidity. The dryness and temperature of saturated steam form dry saturated steam. By cooperating with the water vapor separation structure 3, water vapor separation can occur in the primary heating cold zone 11, the primary heating hot zone 12, the secondary heating hot zone 13 and the condensation zone 14. The structure is reasonable and the output steam quality is high.

In a preferred embodiment of the present invention, the first heating plate group 43 includes a first horizontal plate 431, a first vertical plate 432 perpendicular to the first horizontal plate 431, and a vertical plate 433, wherein the vertical plate 433 is fixed On the first vertical plate 432 away from the water level probe 5, part of the warm water can boil at the vertical plate 433 to generate unsaturated water vapor, and the unsaturated water vapor enters the primary heating hot zone 12 through the vertical plate 433 and the vent hole, Prevent misjudgment of the water level probe 5;

The second heating plate group 44 includes a second horizontal plate 441, a second vertical plate 442 and a third vertical plate 443, wherein the second vertical plate 442 and the third vertical plate 443 have different heights and are vertical on the second horizontal plate 441 to increase the heat exchange area;

The third heating plate group 45 includes a plurality of heating plates 451, wherein the plurality of heating plates 451 are distributed in a grid shape, and are used to increase the heat exchange area between the water vapor and the secondary heating pipe 422, so as to improve the dryness of the water vapor and temperature.

As shown in Figures 3-4, in the primary heating and cold zone 11, a plurality of first horizontal plates 431 and first vertical plates 432 form a grid structure, which can increase the heat exchange in this area, because the water level probe 5 is located in the primary heating cold zone 11 close to the first side wall. In order to avoid unsaturated water vapor from affecting the judgment of the water level probe 5 during the heating process, this implementation is carried out on the first vertical plate 432 away from the first side wall The vertical plate 433 is arranged on the top, and the vertical plate 433 can not only increase the heat exchange area, but also guide the unsaturated steam to avoid misjudgment of the water level probe 5; in order to make the tap water warm up in advance near the second separation plate 32 or boiling, the surface of the second vertical plate 432 close to the second separation plate 32 can also be increased to increase the heat exchange area.

The number of the second vertical plate 442 and the third vertical plate 443 is multiple, and the plurality of second vertical plates 442 and the third vertical plate 443 are all perpendicular to the second horizontal plate 441, so that the second horizontal plate 441 , The projection of the second vertical plate 442 and the third vertical plate 443 on the top surface of the first heating tube cover 411 is grid-like. In addition, because the heights of the second vertical plate 442 and the third vertical plate 443 are different, Not only can the heat exchange area be increased to allow water to boil along the grid, but also the boiling height can be controlled, limiting the boiling height between the two third vertical plates 443, and at the same time allowing the steam to boil along the third vertical plate 443. The plate 443 rises to improve the effect of water vapor separation.

A plurality of heating plates 451 are distributed in a grid shape, which can increase the heat exchange area, slow down the airflow velocity to fully heat the wet saturated steam, increase the dryness and temperature of the steam and then flow out of the evaporator.

In a preferred embodiment of the present invention, there are multiple second vertical plates 442 and third vertical plates 443, and multiple second vertical plates 442 and third vertical plates 443 are distributed at intervals;

Wherein, the height ratio of the second vertical plate 442 to the height of the third vertical plate 443 is 0.3-0.8, so that the warm water boils between the two third vertical plates 443, and the wet saturated steam flows along the third vertical plate 443. Rising to the plate 443, the second vertical plate 442 is used to control the water temperature after the warm water boils.

As shown in Figures 3-4, the second vertical plate 442 and the third vertical plate 443 in the primary heating zone 12 are distributed at intervals, and the second horizontal plate 441 and the third vertical plate 443 between adjacent third vertical plates 443 The second vertical plate 442 forms a grid portion, and the temperature of the grid portion is high enough to cause boiling. Since the height ratio of the second vertical plate 442 to the height of the third vertical plate 443 is 0.3-0.8, this design can be adjacent to the third vertical plate 443. The three vertical plates 443 enclose the boiling water, control the water level when boiling, and at the same time make the wet saturated steam rise along the third vertical plate 443. Through the above structure, effective water vapor separation can be realized, and too much water can be prevented from entering the second Stage heating hot zone 13.

In a preferred embodiment of the present invention, the ends of the second vertical plate 442 and the third vertical plate 443 close to the first separation plate 31 are provided with arc-shaped parts, and the arc-shaped parts are used to guide the wet saturated steam to the first Heating pipe cover 411 realizes water vapor separation.

The ratio of the power of the primary heating tube 412 to the power of the secondary heating tube 422 is 1-3.

As shown in Figures 2-4, the second vertical plate 442 and the third vertical plate 443 in the primary heating zone 12 are both provided with arc-shaped parts, which can increase the heat exchange area on the one hand and enable The boiling water is directed to the space above the second heating tube cover 421, so as to prevent the steam molecules to be moisture generated after boiling from directly entering the secondary heating hot zone 13, so as to realize the purpose of water vapor separation.

The primary heating tube 412 and the secondary heating tube 422 correspond to different areas respectively. The tap water can be converted into steam through the power of the primary heating tube 412 and the power of the secondary heating tube 422. In this embodiment, when the primary heating tube 412 The power and the power of the secondary heating tube 422 are 1 to 3, which can realize the conversion of tap water into wet saturated steam, continue to heat the wet saturated steam and increase the dryness of the wet saturated steam to form dry saturated steam, and output dry saturated steam Process food in the oven.

In the embodiments of the present invention, the term "multiple" refers to two or more, unless otherwise clearly defined. Terms such as "installation", "connection" and "fixation" should be interpreted broadly, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection. Those of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments of the present invention according to specific situations.

In the description of the embodiments of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper" and "lower" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and The description is simplified, but does not indicate or imply that the referred device or unit must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the embodiments of the present invention.

In the description of this specification, the description of the terms "one embodiment", "one preferred embodiment" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one of the embodiments of the present invention Examples or examples. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above are only preferred embodiments of the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various modifications and changes may be made to the embodiments of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the embodiments of the present invention shall be included in the protection scope of the embodiments of the present invention.

Claims (10)

1. A steam generator with multistage water vapor separation, characterized in that, comprising: The main body of the steam generator includes a casing (1) and a cover plate (2) covering the top of the casing (1), wherein the casing (1) includes a bottom wall and is sequentially connected to the bottom wall On the first side wall, second side wall, third side wall and fourth side wall, the first side wall is provided with a water inlet hole (100) and an air outlet hole (101), wherein the water inlet hole (100) communicate with running water, and the air outlet hole (101) is communicated with the water inlet hole (100); A water vapor separation structure (3), wherein, the water vapor separation structure divides the interior of the steam generator main body into a primary heating cold zone (11), a primary heating hot zone (12), and a secondary heating thermal zone connected in sequence. zone (13) and condensation zone (14), the water inlet hole (100) communicates with the primary heating cold zone (11), and the air outlet hole (101) communicates with the condensation zone (14); A heating device (4), arranged in the primary heating cold zone (11), the primary heating hot zone (12) and the secondary heating hot zone (13); Wherein, the tap water flows into the first-stage heating cold zone (11) through the water inlet hole (100), and is heated by the heating device (4) to form warm water, and the warm water enters the first-stage The heating hot zone (12) is heated again to form wet saturated steam, and the wet saturated steam enters the secondary heating hot zone (13) to be heated again to evaporate moisture to form dry saturated steam, and the dry saturated steam flows through The condensation zone (14) and sprays out of the housing (1). 2. The steam generator with multi-stage water vapor separation according to claim 1, characterized in that, the water vapor separation structure (3) comprises: a first separation plate (31), the bottom of which is fixed to the bottom wall, and the two ends are respectively fixed to the first side wall and the third side wall of the housing (1); The second separation plate (32), the bottom is affixed to the bottom wall, the top is affixed to the cover plate (2), and both ends are respectively affixed to the second side wall and the first separation plate ( 31); The third separation plate (33), the bottom is fixed to the bottom wall, the top is fixed to the cover plate (2), and both ends are respectively connected to the first separation plate (31) and the fourth side wall; Wherein, the interior of the housing (1) is divided into the primary heating and cooling by the first separation plate (31), the second separation plate (32) and the third separation plate (33). zone (11), said primary heating zone (12), said secondary heating zone (13) and said condensation zone (14); The second separation plate (32) is provided with a liquid passage hole (321) and a second separation plate ventilation hole, wherein the liquid passage hole (321) is close to the second side wall, so that the primary heating The warm water in the cold zone (11) flows into the primary heating hot zone (12), and the vent holes of the second separation plate are close to the side of the first separation plate (31), so that the primary heating and cooling The unsaturated water vapor formed in the heating process of the zone (11) flows into the first-stage heating hot zone (12); The top of the first separation plate (31) between the primary heating zone (12) and the secondary heating zone (13) is provided with a first separation plate ventilation hole (311), so that the The wet saturated steam in the primary heating zone (12) flows into the secondary heating zone (13) through the first separation plate air hole (311); The third separation plate (33) is provided with a third separation plate through hole, so that the dry saturated steam flows into the condensation zone (14). 3. The steam generator with multi-stage water vapor separation according to claim 2, characterized in that, the housing (1) is also provided with a water level probe (5), and one end of the water level probe (5) It is fixed on the end of the fourth side wall close to the first side wall, and the other end passes through the first separation plate (31) and extends to the primary heating and cooling zone (11), for measuring The liquid level of the primary heating cold zone (11); The liquid level of the primary heating cold zone (11) is located below the vent hole (311) of the first separation plate and the vent hole of the second separation plate. 4. The steam generator with multi-stage water vapor separation according to claim 3, characterized in that, The ratio of the area of the air hole (311) of the first separation plate to the area of the air outlet hole (101) is b, where 1<b≤2; The area ratio of the liquid outlet hole (321) to the water inlet hole (100) is greater than 5; The area ratio of the through hole of the second separation plate to the air outlet hole (101) is greater than 1/3; The ratio of the area of the through hole of the third separation plate to the area of the air outlet hole (101) is c, wherein, 1<b≤2, so that the dry saturated steam quickly fills the condensation zone (14), and Spray from the air outlet (101). 5. The steam generator with multi-stage water vapor separation according to claim 2, characterized in that, The water vapor separation structure (3) also includes a water retaining strip (34) corresponding to the vent hole (311) of the first separation plate, and the top surface of the water retaining strip (34) is affixed to the cover plate ( 2) the bottom surface, part of the molecules in the wet saturated steam condense to form a saturated liquid, and the water retaining strip (34) is used to prevent the saturated liquid from flowing into the secondary heating hot zone (13); The condensing area (14) is provided with a condensed water separator (141) corresponding to the air outlet (101), for preventing condensed water from spraying out from the air outlet (101). 6. The steam generator with multi-stage water vapor separation according to claim 4, characterized in that, the heating device (4) comprises: A primary heating assembly (41), arranged in the primary heating cold zone (11) and the primary heating hot zone (12), comprising a first heating tube cover (411) and a primary heating tube (412), Wherein, the first heating tube cover (411) is fixedly connected to the bottom wall, and the primary heating tube (412) is arranged inside the first heating tube cover (411); The secondary heating assembly (42), arranged in the secondary heating hot zone (13), includes a second heating tube cover (421) and a secondary heating tube (422), wherein the secondary heating tube (422) It is arranged in the second heating tube cover (421). 7. The steam generator with multi-stage water vapor separation according to claim 6, characterized in that, the heating device (4) further comprises: The first heating plate group (43), located in the primary heating cold zone (11), and fixed to the first heating tube cover (411), is used to heat the tap water and form the warm water; The second heating plate group (44), located in the primary heating zone (12), and fixed to the first heating pipe cover (411), is used to continue heating the warm water to form the wet saturation steam; The third heating plate group (45), located in the secondary heating hot zone (13), and fixed to the second heating pipe cover (421), is used for reheating to evaporate water to form the dry saturated steam . 8. The steam generator with multi-stage water vapor separation according to claim 7, wherein, the first heating plate group (43) comprises a first horizontal plate (431), perpendicular to the first The first vertical plate (432) and vertical plate (433) of the horizontal plate (431), wherein the vertical plate (433) is fixed to the first vertical plate away from the water level probe (5) (432), part of the warm water can boil at the vertical plate (433) to generate unsaturated water vapor, and the unsaturated water vapor enters the one through the vertical plate (433) and the air hole. The level heating hot zone (12) prevents misjudgment by the water level probe (5); The second heating plate group (44) includes a second horizontal plate (441), a second vertical plate (442) and a third vertical plate (443), wherein the second vertical plate (442) and The third vertical plates (443) have different heights and are respectively perpendicular to the second horizontal plate (441), so as to increase the heat exchange area between the primary heating pipe (412) and the warm water; The third heating plate group (45) includes a plurality of heating plates (451), wherein the plurality of heating plates (451) are distributed in a grid shape for increasing the water vapor and the secondary heating tubes. (422) heat exchange area, to promote the dryness and temperature of the dry saturated steam. 9. The steam generator with multi-stage water-steam separation according to claim 8, characterized in that, the second vertical plate (442) and the third vertical plate (443) are multiple, and A plurality of the second vertical plates (442) and the third vertical plates (443) are distributed at intervals; Wherein, the height ratio of the second vertical board (442) to the height of the third vertical board (443) is 0.3-0.8, so that the warm water flows between the two third vertical boards (443). ), and make the wet saturated steam rise along the third vertical plate (443), and the second vertical plate (442) is used to control the water temperature height after the warm water boils. 10. The steam generator with multi-stage water vapor separation according to claim 8, characterized in that, Both the ends of the second vertical plate (442) and the third vertical plate (443) close to the first separation plate (31) are provided with arc-shaped portions, and the arc-shaped portions are used for the Wet saturated steam is guided to the first heating pipe cover (411) to realize water vapor separation; The ratio of the power of the primary heating tube (412) to the power of the secondary heating tube (422) is 1-3.

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