CN208909837U - Steam generator - Google Patents

Abstract

The utility model discloses a kind of steam generators, steam generator includes box body (4) and the intracavitary steam boiler (1) and water route component (2) of box for being arranged in box body (4), water route component (2) includes water pump (21) and plate of water route (22), plate of water route (22) is equipped with water route in plate, the one end in water route is the outer water inlet for being pierced by box body (4) in plate, the other end is the boiler water inlet (221) for connecting steam boiler (1), plate of water route (22) is additionally provided with water pump concatenation mouth, water pump (21) concatenates mouth by water pump and is plugged on plate of water route (22) and is arranged in series in plate in water route.Therefore, in the steam generator of the utility model, its water route component is integrated with water pump not only to play the role of convenient for control pump discharge in time, it is also provided with the plate of water route connecting with water pump and steam boiler simultaneously, the setting of the plate of water route helps further to shorten the water route length in steam generator, to facilitate the generation speed of promotion steam.

Description

Steam generator

Technical Field

The utility model relates to a domestic appliance field specifically relates to a steam generator.

Background

In the existing household steam cooking device, a steam generator is generally a common steam boiler for heating cooking water to generate steam, and the steam generator is mainly divided into two ways of being internally or externally arranged in a cooking cavity. Wherein, built-in type steam generator sets up at the culinary art chamber diapire usually and directly heats boiling water in order to produce steam, and external type steam generator sets up at the cavity outer wall usually to steam that will produce passes through steam guide pipe etc. and lets in the culinary art intracavity constantly with cooking food.

In current household steam cooking devices, such as steam ovens and the like, the time period during which steam is generated in the cooking cavity is long, so that the waiting time for cooking food is also relatively long. There are two main categories according to the steam generation principle: one is a water storage type, in which water is directly introduced into a steam boiler and gradually boiled to generate steam, which usually takes about 1 minute; in another type, the heating element of the steam boiler is a casting, and the casting is usually heated to a certain temperature of 100 ℃ or above, and then water is sprayed to the casting to generate steam, which generally takes about 30 seconds, so that the waiting time for cooking is long.

Simultaneously because culinary art cavity inner chamber and outer wall are cold environment for temperature is lower in the cavity, thereby it is long when also having increased the culinary art, in addition, steam when meetting the lower culinary art cavity outer wall of temperature, forms the water droplet very easily and directly drips on the food that needs the culinary art, makes the culinary art effect not good, finally makes user's experience feel not good.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a miniaturized, the modular steam generator that can go out steam fast.

In order to achieve the above object, the utility model provides a steam generator, steam generator includes the box body and arranges steam boiler and the water route subassembly of the box intracavity of box body, the water route subassembly includes water pump and water route board, the water route board is equipped with the inboard water route, the one end in inboard water route is for wearing out the external mouth of a river of box body, and the other end is for connecting steam boiler's boiler water receiving mouth, the water route board still is equipped with water pump cluster interface, the water pump passes through the water pump cluster interface peg graft in on the water route board and establish ties set up in the inboard water route.

Preferably, the water pump includes intake pump and suction pump, external mouth of a river includes external water inlet and external outlet, the water pump concatenates the mouth including the intake pump concatenates the entry, the intake pump concatenates the export, the suction pump concatenates the entry and the suction pump concatenates the export, the inboard water route including connect in boiler water receiving mouth with inboard intake water route between the external water inlet and connect in boiler water receiving mouth with inboard water route between the external outlet, the intake pump concatenates the entry and the intake pump concatenates the export set up in the inboard water route of intaking, the suction pump concatenates the entry and the suction pump concatenates the export set up in the inboard water route of intaking.

Preferably, the external water inlet and the boiler water receiving port extend out of the plate edge wall of the water circuit board, and the water pump serial port extends out of the first plate surface wall of the water circuit board.

Preferably, the in-board waterway comprises a waterway channel formed on a second board-facing wall opposite to the first board-facing wall.

Preferably, the water channel plate is attached to the outer wall surface of the steam boiler.

Preferably, the water route board is the rectangular plate, follows on the first length direction of water route board, external water inlet, external outlet and boiler water receiving mouth arrange in proper order at interval on the board limit wall on the same long limit of water route board, it has set up in proper order at interval on the first board face wall the intake pump concatenates the export, the intake pump concatenates the entry, the suction pump concatenates the export and the suction pump concatenates the entry.

Preferably, external mouth of a river, boiler water receiving mouth and water pump cluster interface all communicate the water route slot, the water route slot includes first water route slot, second water route slot and third water route slot, first water route slot intercommunication the intake pump concatenates the export with the boiler water receiving mouth, second water route slot intercommunication the intake pump concatenates the entry with external water inlet, third water route slot intercommunication external outlet with the suction pump concatenates the export.

Preferably, the waterway plate comprises a front half plate and a rear half plate which are overlapped along the thickness direction, and the waterway plate is provided with a thread mounting column and/or a mounting boss.

Preferably, the steam generator further comprises an external water tank fixedly installed on the outer wall of the box body and butted with the external water gap.

Preferably, the box body is a rectangular box, and the steam boiler, the water circuit board and the water pump are sequentially attached and arranged along the length direction of the box cavity.

Through the technical scheme, consequently, the utility model discloses an among the steam generator, this water route subassembly not only is integrated with the water pump in order to play the effect in time control pump sending flow, has still set up the water route board of being connected with water pump and steam boiler simultaneously, and the water route length in the steam generator that helps further shortening is provided with of this water route board to help improving the production speed of steam.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which 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 principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a perspective view of a steam generator according to a preferred embodiment of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a cross-sectional view of section A-A of FIG. 2;

FIG. 5 is a cross-sectional view of section B-B of FIG. 3;

FIG. 6 is an exploded view of FIG. 1;

FIG. 7 is a schematic view of the structure of the water filter plate;

FIG. 8 is a schematic structural view of a condensation cover;

FIG. 9 is a cross-sectional view of section C-C of FIG. 2;

FIG. 10 is a cross-sectional view taken along section D-D of FIG. 2;

fig. 11 is a perspective view of a waterway assembly in accordance with a preferred embodiment of the present invention;

fig. 12 and 13 are perspective views of a waterway plate assembly according to a preferred embodiment of the present invention;

fig. 14 and 15 are exploded views of the waterway plate assembly;

FIG. 16 is a front view of the waterway plate assembly;

FIG. 17 is a cross-sectional view of section E-E of FIG. 16;

fig. 18 is a perspective view of a steam cooking device according to a preferred embodiment of the present invention;

fig. 19 is a front view of a steam cooking device (inner structure) according to a preferred embodiment of the present invention;

FIG. 20 is a cross-sectional view of section F-F of FIG. 19; and

fig. 21 is a schematic diagram of the structure of the cell controller.

Description of the reference numerals

1 steam boiler 2 waterway assembly

3 circuit board assembly 4 box body

5 isolation box

10 boiler body 11 water filtering cavity

12 steam filtering cavity and 13 condensation cavity

14 water filtering plate 15 condensation cover

16 steam outlet pipe 17 boiler heating element

21 water pump 22 water channel plate

23 dismounting joint cover 24 waterway groove

25 heat-conducting plate 26 annular seal

31 silicon controlled rectifier unit

151 air outlet hole convex plate 152 air outlet hole

153 reflow step portion

141 filter cell 142 return edge gap

211 water inlet pump 212 water pump

221 boiler water receiving port 222 is externally connected with a water inlet

223 external water outlet 224 mounting boss

211a inlet pump serial outlet 211b inlet pump serial inlet

212a suction pump series inlet 212b suction pump series outlet

230 external water gap M first plate surface wall

241 first waterway groove 242 and second waterway groove

243 third water channel N second plate surface wall

800 bottom heating element for cooking cavity 603

601 top wall preheating element 602 rear wall preheating element

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, top, bottom" and "upper" are generally used with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, vertical or gravitational direction.

To among the current steam cooking equipment, steam generator only includes the steam boiler that is used for producing steam usually, and parts such as water pipe and intake pump are often gone into in this steam boiler's outside switch-on to make current steam generator have the structure comparatively complicated, occupy the great and slow scheduling problem of steam speed of volume and play, to this, the utility model provides a novel steam generator, refer to fig. 1 to fig. 6 and show. The steam generator includes:

a steam boiler 1 comprising a boiler heating element 17;

a waterway assembly 2 including a water pump 21 for pumping fluid or pumping fluid to the steam boiler 1; and

a unit controller for controlling the boiler heating power of the steam boiler 1 and the pumping power of the water pump 21.

It can be seen that the utility model discloses a steam generator is integrated with the water route subassembly that has the water pump and the unit controller of control pump sending power and heating power to make this steam generator have integrated modularization effect, and through the accurate control relevant parameter of the unit controller of module self-band, go out the effect of steam (can realize 3 seconds internal steam) with realizing this steam generator fast, and this modular structure more helps promoting the purpose of the miniaturization and the universalization of steam generator product. Wherein, the utility model discloses a steam generator's unit controller can and dispose the complete machine controller of this steam generator's complete machine between realize the communication to finally realize the effect of the quick play steam of complete machine product.

Specifically, the steam generator may include a box 4, and the steam boiler 1, the waterway assembly 2 and the unit controller are all built in a box cavity of the box 4. Consequently, according to this steam generator's universalization characteristic, this steam generator can be applied to in the various domestic steam cooking device products, and the utility model discloses a steam generator concentrates on spare parts such as steam boiler 1, water pump 21 and control circuit in order to constitute modular structure in box body 4, can not only effectively compress the module volume and be applied to the steam cooking device complete machine product of multiple model, can also effectively improve the development cycle that corresponds steam cooking device. Wherein the unit controller is typically centralized on a circuit board assembly 3 (see fig. 1 and 5).

As shown in fig. 5 and 6, the box body 4 is preferably a rectangular box, the unit controllers and the waterway assemblies 2 are arranged in an up-down stacked manner, and the steam boiler 1 and the unit controllers and the waterway assemblies 2 which are arranged in an up-down stacked manner are arranged along the length direction of the box cavity. It is thus clear that in the utility model discloses an among the steam generator, each part divides the worker to make clear and clearly just arrange the position appropriate, and the structure is compacter, can make this steam generator's performance more reliable.

Further, the size range of the box body 4 of the steam generator of the present invention is preferably: a miniaturized modular structure having a length of no more than 250mm, a width of no more than 100mm and a height of no more than 100 mm.

To the modular steam generator of the present invention, which has a compact structure, is miniaturized, and can realize the effect of "second steam generation", the inventor creatively improves and optimizes each functional component, and the detailed and specific explanation will be made below.

As shown in fig. 11, in the steam generator of the present invention, the waterway assembly 2 includes a water pump 21 and a waterway plate 22. Referring to fig. 9 and 10, the waterway plate 22 is provided with an in-plate waterway, one end of the in-plate waterway is an external water port penetrating through the box body 4, the other end of the in-plate waterway is a boiler water receiving port 221 connected with the steam boiler 1, the waterway plate 22 is further provided with a water pump serial port, and the water pump 21 is inserted into the waterway plate 22 through the water pump serial port and is serially arranged in the in-plate waterway.

Therefore, the waterway assembly 2 not only concentrates the water pump 21 in the steam generator to facilitate the timely control of the pumping flow, but also provides the waterway plate 22 connected to the water pump 21 and the steam boiler 1, and the waterway plate 22 is provided to help further shorten the waterway length in the steam generator, thereby helping to increase the steam generation speed to achieve the effect of rapidly 'second-giving out steam'.

With continued reference to fig. 9 to 11, and fig. 16 and 17, in the waterway assembly 2 of the present invention, the water pump 21 includes a water inlet pump 211 and a water suction pump 212, the water inlet pump 211 is used for pumping the external fluid into the steam boiler 1, and the water suction pump 212 is used for pumping and discharging the steam boiler 1; the external water inlet comprises an external water inlet 222 and an external water outlet 223; the water pump serial connection port comprises a water inlet pump serial connection inlet 211b, a water inlet pump serial connection outlet 211a, a water suction pump serial connection inlet 212a and a water suction pump serial connection outlet 212 b; the in-board water path comprises an in-board water inlet water path connected between the boiler water receiving port 221 and the external water inlet 222 and an in-board water pumping water path connected between the boiler water receiving port 221 and the external water outlet 223; the water inlet pump serial inlet 211b and the water inlet pump serial outlet 211a are arranged in the in-board water inlet waterway, and the water suction pump serial inlet 212a and the water suction pump serial outlet 212b are arranged in the in-board water suction waterway.

When the water inlet pump 211 works, external fluid enters from the external water inlet 222, sequentially flows through the in-plate water inlet waterway, enters the water inlet pump 211 from the water inlet pump serial inlet 211b, and flows to the boiler water receiving port 221 from the water pump serial outlet 211a and is pumped into the steam boiler 1. When the water pump 212 works, the waste liquid in the steam boiler 1 can be pumped out through the boiler water receiving port 221 and enter the water pump 212 from the water pump serial connection inlet 212a, and flows through the in-board water pumping water path in the process, so that the waste liquid in the steam boiler 1 is discharged outwards from the external water discharge port 223, and thus, the in-board water path in the whole water path board 22 is short, and the structure is simple and reasonable.

Specifically, as shown in fig. 9 and 10, the external water inlet and the boiler water inlet 221 may extend from the plate edge wall of the waterway plate 22, and the water pump string port extends from the first plate surface wall M of the waterway plate 22.

Meanwhile, the in-board waterway includes waterway grooves 24 formed on a second board-face wall N opposite to the first board-face wall M, so that the in-board waterway of the waterway board 22 is formed by cooperation of the respective water receiving ports and the waterway grooves 24. Referring to the waterway grooves 24 shown in fig. 14, the on-board waterway of the present invention preferably takes the form of a grooved waterway because the grooved circulation waterway has better heat conduction and dissipation performance than a closed waterway, and further facilitates the water cooling of the thyristor unit 31 (see fig. 5) for adjusting the heating power, and the specific structure and principle are further described below. Of course, the in-plate water passage is not limited to the grooved water passage groove 24 described above, and may be a closed water passage groove.

To further close the water channel 24, the water channel plate 22 may be attached to the outer wall surface of the steam boiler 1.

Specifically, referring to fig. 9 to 13, the waterway plate 22 is preferably a rectangular plate, and in the first length direction of the waterway plate 22, the external water inlet 222, the external water outlet 223 and the boiler water receiving port 221 are sequentially and alternately arranged on the plate side wall of the same long side of the waterway plate 22, and the first plate side wall M is sequentially and alternately provided with a water inlet pump serial outlet 211a, a water inlet pump serial inlet 211b, a water suction pump serial outlet 212b and a water suction pump serial inlet 212 a.

Meanwhile, the external water inlet 230, the boiler water receiving port 221 and the water pump serial port are all communicated with the water channel groove 24, and the water channel groove 24 is arranged on a second plate surface wall N opposite to the first plate surface wall M. As shown in fig. 9, the waterway grooves 24 include a first waterway groove 241, a second waterway groove 242 and a third waterway groove 243, the first waterway groove 241 communicates the intake pump serial outlet 211a and the boiler water receiving port 221, the second waterway groove 242 communicates the intake pump serial inlet 211b and the external water inlet 222, and the third waterway groove 243 communicates the external water discharge port 223 and the water pump serial outlet 212 b.

Preferably, the waterway plate 22 may include a front half plate and a rear half plate which are overlapped in a thickness direction according to the structural characteristics of the first plate surface wall M and the second plate surface wall N having different structures of the waterway plate 22, which facilitates the manufacturing of the waterway plate 22. Meanwhile, the waterway plate 22 is provided with a screw mounting post and/or a mounting boss 224 (see fig. 10 and 15), and the screw mounting post and/or the mounting boss 224 (see fig. 10 and 15) is a connection fixing portion of the waterway plate 22.

Typically, the steam generator further comprises an external water tank fixedly mounted on the outer wall of the box 4 and abutting against the external water inlet, and correspondingly the waterway assembly 2 may communicate with the adjacent external water tank and/or waste water tank, and the external water inlet 222 communicates with the external water inlet tank, and the external water outlet 223 communicates with the external waste water tank.

In the box body 4 of the steam generator, the steam boiler 1, the waterway plate 22 of the waterway component 2 and the water pump 21 are sequentially arranged in a laminating way along the length direction of the box cavity, and the waterway is shorter.

The external outlet of the water channel plate 22 includes an external water inlet 222 and an external water outlet 223, and can be used to connect the corresponding water tanks (there may be 2 or more water tanks), but according to the difference of the number and structure of the actual water tanks outside the box body 4 of the steam generator, for example, the common steam cooking device usually includes only one water tank, so that the present invention is directed to this, in particular, the present invention further provides a special water channel plate assembly, as shown in the preferred embodiment shown in fig. 12 to 15, the water channel plate assembly includes:

the water circuit board 22 is provided with a water receiving port (i.e. the boiler water receiving port 221, the following is consistent), an external water inlet 222 and an external water outlet 223, an in-board water inlet waterway is connected between the water receiving port and the external water inlet 222, a water inlet pump tandem inlet 211b and a water inlet pump tandem outlet 211a are arranged in the in-board water inlet waterway, an in-board water pumping waterway is connected between the water receiving port and the external water outlet 223, and a water pump tandem inlet 212a and a water pump tandem outlet 212b are arranged in the in-board water pumping waterway; and

the detachable joint cover 23 is detachably sleeved outside the external water inlet 222 and the external water outlet 223 and is provided with an external water inlet 230 communicated with the external water inlet 222 and the external water outlet 223 respectively.

It can be seen that the utility model provides a waterway board assembly has not only included foretell waterway board 22, has still included the dismouting splice closure 23 that has the dismantlement function that can regard as chooseing for use. Therefore, the waterway plate 22 with the detachable joint cover 23 can be applied to a case where only one water tank is provided or a case where both a water inlet tank and a waste water tank are provided. Whether dismouting joint cover 23 is selected for use according to actual conditions to make this waterway board subassembly's commonality higher, when outside water tank only has one, can use the waterway board subassembly that has this dismouting joint cover 23, thereby the correspondence is connected external water gap 230 and is connected outside water tank.

The utility model also provides a water route subassembly 2, as in the preferred embodiment shown in FIG. 11, this water route subassembly 2 includes intake pump 211, suction pump 212 and the aforesaid water route board subassembly, intake pump 211 and suction pump 212 are pegged graft respectively in water route board 22, the water inlet and the delivery port of intake pump 211 dock the intake pump respectively and concatenate entry 211b and intake pump and concatenate export 211a, the water inlet and the delivery port of suction pump 212 dock the suction pump respectively and concatenate entry 212a and the suction pump concatenate export 212 b. Consequently the utility model discloses a water route subassembly 2 has also included all advantages of above-mentioned water route board subassembly, no longer gives unnecessary details.

In the steam generator of the present invention, a thyristor unit 31 for controlling the boiler heating power of the boiler heating element 17 may also be integrated in the circuit board assembly 2, see fig. 5 for a preferred embodiment, in particular, the thyristor unit 31 is arranged to be in contact with the circuit board 22 for heat conduction. Therefore, because current silicon controlled rectifier unit (like the IGBT module), these power electronic semiconductor device all need the collocation radiator to use when using, realize dispelling the heat to the silicon controlled rectifier unit to ensure the normal work of silicon controlled rectifier unit, and the utility model discloses a silicon controlled rectifier unit 31 can realize the water-cooling heat dissipation to silicon controlled rectifier unit 31 through the mode of contact water route board 22, thereby has replaced and has used the radiator, and consequently this not only is favorable to practicing thrift installation space and further improves this steam generator's miniaturization effect, still is favorable to reducing the manufacturing cost of product simultaneously.

Specifically, referring to fig. 5, 11 to 15, the steam generator is provided with a heat conductive plate 25 protruding from a side wall of the waterway plate 22, and the thyristor unit 31 is attached to the heat conductive plate 25. Generally, the one end welding of silicon controlled rectifier unit 31 is on the circuit board of circuit board components 3, therefore silicon controlled rectifier unit 31 can set up the heat-conducting plate 25 laminating setting of being convenient for in the edge of circuit board, ensures that silicon controlled rectifier unit 31 and heat-conducting plate 25's area of contact is enough big to in time realize contacting the heat dissipation effectively.

In the structure of the steam generator case 4, as shown in fig. 5, the circuit board assembly 3 and the water path assembly 2 are stacked up and down, the steam boiler 1 and the circuit board assembly 3 and the water path assembly 2 stacked up and down are arranged along the length direction of the case cavity, and the water path plate 22 is sandwiched between the water pump 21 and the steam boiler 1.

As shown in fig. 6, 9 and 10, the steam generator includes an isolation box 5 for separating the waterway assembly 2 from the circuit board assembly 3, and the circuit board assembly 3 is installed in the isolation box 5, so that the circuit board assembly 3 is separated from the structure of the waterway board assembly 2, the water and electricity separation effect is realized, the normal operation of the circuit board assembly 3 is ensured, and the service performance of the steam generator is ensured.

According to the above-described structure in which the plate inner water passages are formed in the water passage plate 22 in fig. 14, the water passage grooves 24 are formed in the second plate-face wall N, and preferably, the side of the water passage grooves 24 facing the steam boiler is provided in a grooved form, so that, as shown in fig. 11 to 15, the heat conduction plate 25 can be preferably fixed to the second plate-face wall N and covers the water passage grooves 24, and the heat conduction plate 25 is in direct contact with the fluid, and the heat radiation effect is more excellent.

To ensure the normal circulation of the in-board waterway of the waterway plate 22, as shown in fig. 15 and 16, an annular sealing member 26 is provided between the heat conductive plate 25 and the waterway plate 22 to ensure the sealing fluidity of the in-board waterway.

Meanwhile, since the water pump 21 includes the water inlet pump 211 and the water suction pump 212, the water inlet pump 211 is used for pumping fluid (generally, the temperature is normal temperature or low temperature) into the steam boiler 1 and heating the fluid by the steam boiler 1 to generate steam, and the water suction pump 212 is used for pumping the fluid in the steam boiler 1 for steam generation in the next cooking, the temperature of the fluid pumped by the water suction pump 212 is generally high and the heat dissipation effect on the thyristor unit 3 is not significant, and therefore, the thyristor unit 31 is preferably disposed at a side close to the water inlet pump 211, so that the water cooling effect of the thyristor unit 31 is better.

In a preferred embodiment of the steam boiler 1 of the steam generator of the present invention, referring to fig. 4 to 6, the steam boiler 1 comprises a boiler body 10 and a boiler heating element 17 disposed on the bottom wall of the boiler body 10, a partition member is disposed in the boiler chamber in the boiler body 10 to sequentially form a water filtering chamber 11, a steam filtering chamber 12 and a condensing chamber 13 communicated with air holes above the liquid level, and a steam outlet pipe 16 is connected to the top of the condensing chamber 13.

Therefore, in the steam boiler 1 of the present invention, after the steam boiler 1 is operated and generates steam, the steam is "filtered" by the water filtering chamber 11, the steam filtering chamber 12 and the condensing chamber 13 in sequence and then discharged from the steam outlet pipe 16. Thus, the utility model discloses a steam boiler 1 is one kind from the novel steam boiler of taking "filtration gas drainage" boiler chamber to make the steam of leading out from steam boiler 1's steam outlet pipe 16 not take large granule steam and for saturated steam, thereby ensured the good culinary art effect of this steam boiler 1.

Specifically, the partition member includes a water filtering plate 14, as shown in fig. 7, the water filtering plate 14 is a grid plate with uniformly distributed filter pores 141, the water filtering plate 14 is disposed above the liquid surface at intervals, and the water filtering cavity 11 is formed between the water filtering plate 14 and the liquid surface. This is because when the fluid (e.g., water) in the steam boiler 1 is heated and boiled, a large number of bubbles are generated when the water is boiled, and water droplets are generated when the bubbles are burst, and these bubbles and water droplets are easily guided to the steam outlet (e.g., the steam outlet pipe 16) to form scale and block the steam outlet. And the utility model discloses in set up the equipartition and had the drainage board 14 that helps even "broken bubble" filtration hole 141 to drainage board 14 still does benefit to the water droplet or the steam that keep away and prevent to break the back and produce and continue upwards flow, thereby can make "broken bubble" back water droplet or steam backward flow and drip to below the liquid level. Therefore, after the water filtering plate 14 serving as a separation layer is additionally arranged, steam passes through the water filtering cavity 11 with the water filtering plate 14, water vapor in large bubbles can be preliminarily isolated and filtered, and meanwhile, the water filtering cavity 11 has the function of 'bubble breaking and water filtering' by being helped to avoid the water scale from blocking the steam outlet pipe 16.

Preferably, the drainage plate 14 is positioned no higher than 15mm above the highest liquid level.

Meanwhile, the partition member may further include a condensation cover 15 covering and fastened over the water filter 14, as shown in fig. 8, the steam filtering cavity 12 is formed between the condensation cover 15 and the water filter 14, and a top wall of the condensation cover 15 is provided with a plurality of air outlet holes 152. Therefore, when the steam enters the steam filtering chamber 12 after being filtered by the water filtering chamber 11, the condensation and filtration of large-particle water vapor can be further carried out in the steam filtering chamber.

Further, the top wall of the condensation cover 15 is formed with an air outlet convex plate 151 protruding upward, as shown in fig. 8, the air outlets 152 are uniformly distributed on the air outlet convex plate 151, and the area of the convex plate of the air outlet convex plate 151 is not greater than one half of the area of the top wall of the condensation cover 15. When the steam is discharged upwards from the condensation cover 15, it will impact and deflect at other positions of the top wall of the condensation cover 15 without the steam outlet holes 152, which will help the steam to be further filtered and condensed, and finally make the filtered steam be discharged from the steam outlet holes 152 of the concentrated steam outlet convex plate 151. Of course, the area of the outlet port convex plate 151 cannot be too small to occupy the total area, and the effect of smoothly flowing and discharging the steam upward is also considered.

In order to ensure the bubble breaking and gas filtering effects of the water filter plate 14 and the condensation cover 15, the pore diameter of the bubble filtering holes is preferably in the range of 5mm to 10mm, and the pore diameter of the gas outlet holes 152 is preferably in the range of 3mm to 8 mm.

Meanwhile, the height of the steam filtering cavity 12 is not higher than 15 mm.

Furthermore, as shown in fig. 6 and 8, the condensation chamber 13 is formed between the condensation cover 15 and the top wall of the boiler body 10, a backflow step portion 153 is formed at the edge of the top wall of the condensation cover 15, a backflow edge gap 142 is formed on the water filtering plate 14, and the condensed water on the top wall of the boiler body 10 can flow back to the bottom of the boiler chamber through the backflow step portion 153 and the backflow edge gap 142 in sequence, so that the steam is condensed again in the condensation chamber 13, thereby better ensuring that the steam led out from the steam boiler 1 is saturated steam. In addition, the backflow and recovery of the condensed water also contribute to improving the endurance of the water source.

To make the backflow effect more thorough, the backflow step 153 and the backflow edge notch 142 are located directly below the steam outlet pipe 16.

The utility model discloses a steam generator is for improving steam boiler 1's heating efficiency to realize going out the effect of steam fast, boiler heating element 17 is the preferred thick film.

For making the utility model discloses a modular steam generator can go out steam fast, realizes "second go out steam" and keeps lasting the effect of going out steam at follow-up in-process the utility model discloses an among the circuit board assembly 3, the unit controller includes flow process control module, and flow process control module configuration is: when the steam generator starts to work, the steam boiler 1 is started to heat at a preset heating power W and constant power, and simultaneously, the water pump 21 is started to supply liquid to the steam boiler 1 at an initial inlet liquid flow rate X1. Wherein, X1 is X0X Y, Y is a multiple constant not greater than 3 and not less than 1.5, and X0 is the current theoretical evaporation flow corresponding to the predetermined heating power W.

Because the water inflow of the steam boiler 1 is usually large under the condition of avoiding dry burning in the prior art, namely the initial liquid inlet flow X1 is set to be large, and the multiple Y is large. Typically, Y is set to be about 10 times or more, which in turn results in a slower steam outlet rate of existing steam boilers. Compared with the prior art, the key of the second steam outlet in the steam generator of the utility model lies in reasonably controlling the water supply quantity of the initial liquid inlet flow X1 to realize quick steam outlet and avoid dry burning. Therefore, after heating power, namely preset heating power W is given, the corresponding current power theoretical evaporation liquid amount X0 is calculated, the initial liquid inlet flow rate is controlled to be Y times of X0, Y is within a reasonable range, and second steam outlet can be achieved, wherein Y is preferably a multiple value constant which is not more than 3 and not less than 1.5.

Generally, the theoretical amount of the evaporation liquid X0 satisfies:

wherein C1 is the specific heat capacity of the liquid, T0 is the initial liquid temperature, T1 is the boiling point temperature of the liquid, and C2 is the vaporization thermal parameter of the liquid. Therefore, when the predetermined heating power W is given, the theoretical amount of evaporation liquid X0 of the current power can be obtained according to the above formula (1).

Simultaneously, the unit controller still includes heating frequency control module, and heating frequency control module sets up to: obtaining preset heating power W according to the set second steam outlet time T and the multiple value constant Y, wherein the preset heating power W meets the following requirements: w is greater than or equal to X₁*T*Q₁+Q₃*m₁；(2)

Wherein,

c1 is the specific heat capacity of liquid, C2 is the vaporization heat parameter of liquid, C3 is the specific heat capacity of the material of the surrounding wall of the furnace of the steam boiler 1, T0 is the initial liquid temperature, T1 is the boiling temperature of liquid, m1 is the mass of the surrounding wall of the furnace, Q1 is the amount of heat absorbed during the rise of the unit mass of liquid from T0 to T1 in unit time, and Q3 is the amount of heat absorbed during the rise of the unit mass of the surrounding wall of the furnace from T0 to T1 in unit time.

The utility model discloses an among the modular steam generator, unit controller control realizes "second goes out steam" and mainly has the control of three variable parameter, is the multiple Y who goes out steam second number of seconds T, predetermined heating power W and current power theory evaporation flow respectively. Referring to fig. 21, the utility model discloses a steam generator is in the application scenario of difference, through giving out steam second number of seconds T and the multiple Y in the reasonable range, and predetermined heating power W is confirmed to calculation comparing element or table inquiry unit in the heating frequency control module of accessible unit controller, and then adjusts corresponding predetermined heating power W through silicon controlled unit 31 in the hardware, realizes modularization steam generator's commonality application, design.

The utility model discloses a steam generator can realize going out the effect of steam fast, and long T can be not more than 3 seconds in the time of theoretically going out steam second.

In the experiment, water with the temperature of 25 ℃ is introduced into the steam boiler 1 to be heated and boiled so as to generate steam. The material of the circumferential wall of the hearth of the steam boiler 1 is stainless steel, the specific heat capacity C1 of water is 4.186KJ/Kg, the gasification heat parameter C2 of the water is 2257.2KJ/Kg, the specific heat capacity C3 of the stainless steel is 0.449KJ/Kg, the initial liquid temperature T0 is 25 ℃, the boiling temperature T1 of the water is 100 ℃, and the mass m1 of the circumferential wall of the hearth is 91.3 g. According to the calculation of the formula (2) and the formula group (3), when the preset heating power W is 2000W, and Y is 2.3 times, the steam second number T of the steam generation period in theory of the initial generation of the steam can be calculated to be about 3 seconds.

During the use process of the modular steam generator, the flow process control module of the unit controller limits reasonable fluctuation adjustment of the flow on a time axis, namely timely adjusting the liquid inlet flow Y X0, and can realize faster steam outlet, namely so-called 'second steam outlet' and continuous steam outlet and prevent dry burning.

Make unit controller realize preventing dry combustion method and avoid leading to unable quick or lasting steam because of heating excessive water for real-time supervision water level in steam boiler 1's feed liquor in-process, be equipped with liquid level detector (not shown) in steam boiler 1, flow process control module still configures into: during the continuous heating-out of steam from the steam generator, the water pump 21 is controlled such that the boiler level inside the steam boiler 1 is between the dry-burning prevention level and the excess level.

To ensure that the steam generator can keep continuously generating steam after achieving the initial 'second steam generation', so that the steam can not be interrupted and can still keep continuously generating steam in the process of liquid replacement. In this regard, the flow process control module is further configured to:

when the initial boiler liquid level in the steam boiler 1 reaches a preset control liquid level, the liquid inlet flow is adjusted from the initial liquid inlet flow X1 to the current theoretical power evaporation flow X0; and

continuously detecting the liquid level of the boiler, and when the liquid level of the boiler is higher than a preset control liquid level within continuous overproof detection time T', reducing the liquid inlet flow and adjusting the liquid inlet flow to be reduced liquid inlet flow X3;

or when the liquid level of the boiler is lower than the preset control liquid level within the continuous overproof detection time T', increasing the liquid inlet flow and adjusting the liquid inlet flow to be the incremental liquid inlet flow X4;

wherein the preset control liquid level is between the dry burning prevention liquid level and the excessive liquid level.

Preferably, the decrement inlet flow rate X3 is half of the current power theoretical evaporation flow rate X0, and the increment inlet flow rate X4 is twice of the current power theoretical evaporation flow rate X0, so as to ensure that the boiler liquid level in the steam boiler 1 is maintained between the dry-burning prevention liquid level and the excess liquid level.

Wherein, the overproof detection time T' is inversely proportional to the multiple value constant Y.

Meanwhile, the flow process control module is further configured to: when the steam generator stops working, the water pump 21 is controlled to pump liquid to exhaust the fluid in the steam boiler 1, so that the residual liquid in the steam boiler 1 can be prevented from scaling, and meanwhile, the water pump is ready for the next starting and the rapid steam discharging is ensured.

In addition, the present invention further provides a steam cooking device, as shown in fig. 18 to 20, the steam cooking device includes a cooking cavity 800, and further includes the steam generator, and the steam generator introduces steam into the cooking cavity 800. Therefore, the steam cooking device of the utility model also comprises all the advantages of the steam generator, and the description is omitted.

In the conventional steam cooking device, before steam is introduced into the cooking cavity 800, the inner wall of the cooking cavity 800 and the interior of the cooking cavity are both in a low-temperature environment. If direct let in the culinary art cavity 800 that is in low temperature environment with steam in, not only make the ambient temperature rise speed in the culinary art cavity 800 slow, lead to steam to meet microthermal internal wall face moreover very easily and form on the comdenstion water directly drips to food, this taste that not only can influence food still can influence the outward appearance of food to influence the culinary art effect of food, for example when culinary art steamed bun, can influence the fermentation inflation etc. effect of steamed bun. To this, the utility model discloses a steam cooking device still includes around preheating heating element and the complete machine controller with the unit controller communication of the outer wall setting of culinary art cavity 800, and the complete machine controller configuration is: when the steam boiler 1 is controlled to be heated by the unit controller, the preheating heating element is synchronously started to preheat the cooking cavity 800, so that when the steam boiler 1 is heated, the function of preheating the cooking cavity 800 is synchronously started, so that the environment in the cooking cavity 800 is quickly preheated.

The preheating heating power of the preheating heating element is obtained by subtracting the boiler power and the pumping power from the maximum heating power of the steam cooking device, so that the working power of the steam cooking device does not exceed the highest rated heating power used by the whole machine.

Referring to fig. 19 and 20, the preheating heating elements include a top wall preheating element 601 for heating the top wall of the cooking cavity 800, a rear wall preheating element 602 for heating the rear wall of the cooking cavity 800, and a bottom wall preheating element 603 for heating the bottom wall of the cooking cavity 800, and the overall controller is further configured to: the top wall preheating element 601, the rear wall preheating element 602 and the bottom wall preheating element 603 are activated in sequence so that the top wall preheating element 601, the rear wall preheating element 602 and the bottom wall preheating element 603 are operated intermittently in sequence.

In addition, most of the existing cooking cavities 800 adopt enamel materials with good performance as cavity materials, so that in order to prevent the problems of color change or deformation of the enamel cavities under high-temperature heating, the preheating heating elements are arranged at intervals with the outer wall surface of the cooking cavity 800, so that the preheating heating elements form non-contact heating on the outer wall surface of the cooking cavity 800.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims (10)

1. The utility model provides a steam generator, characterized in that, steam generator includes box body (4) and arranges steam boiler (1) and water route subassembly (2) in the box intracavity of box body (4), water route subassembly (2) include water pump (21) and water route board (22), water route board (22) are equipped with the inboard water route, the one end in inboard water route is for wearing out the external mouth of a river of box body (4), and the other end is for connecting boiler water receiving mouth (221) of steam boiler (1), water route board (22) still are equipped with water pump cluster interface, water pump (21) pass through water pump cluster interface peg graft in on the water route board (22) and establish in series in the inboard water route.

2. The steam generator according to claim 1, characterized in that the water pump (21) comprises a water inlet pump (211) and a water suction pump (212), the external water inlet comprises an external water inlet (222) and an external water outlet (223), the water pump serial connection port comprises a water inlet pump serial connection inlet (211b), a water inlet pump serial connection outlet (211a), a water suction pump serial connection inlet (212a) and a water suction pump serial connection outlet (212b), the in-board water path comprises an in-board water inlet water path connected between the boiler water receiving port (221) and the external water inlet port (222) and an in-board water pumping water path connected between the boiler water receiving port (221) and the external water outlet port (223), the water inlet pump serial inlet (211b) and the water inlet pump serial outlet (211a) are arranged in the water inlet waterway inside the plate, the water suction pump serial inlet (212a) and the water suction pump serial outlet (212b) are arranged in the plate water pumping waterway.

3. The steam generator according to claim 2, characterized in that the outer water connection port and the boiler water connection port (221) extend from a plate edge wall of the water circuit plate (22), and the water pump string port extends from a first plate surface wall (M) of the water circuit plate (22).

4. The steam generator of claim 3, wherein the in-plate waterway comprises a waterway groove (24) formed on a second plate-face wall (N) opposite the first plate-face wall (M).

5. The steam generator according to claim 4, wherein the water path plate (22) is arranged to conform to an outer wall surface of the steam boiler (1).

6. The steam generator according to claim 4, wherein the water path plate (22) is a rectangular plate, and the external water inlet (222), the external water outlet (223) and the boiler water receiving port (221) are sequentially and alternately arranged on the plate side wall of the same long side of the water path plate (22) along a first length direction of the water path plate (22), and the water inlet pump serial outlet (211a), the water inlet pump serial inlet (211b), the water suction pump serial outlet (212b) and the water suction pump serial inlet (212a) are sequentially and alternately arranged on the first plate side wall (M).

7. The steam generator of claim 6, wherein the external water inlet, the boiler water receiving port (221), and the water pump string port are all in communication with the water channel groove (24), the water channel groove (24) comprises a first water channel groove (241), a second water channel groove (242), and a third water channel groove (243), the first water channel groove (241) is in communication with the water inlet pump serial outlet (211a) and the boiler water receiving port (221), the second water channel groove (242) is in communication with the water inlet pump serial inlet (211b) and the external water inlet (222), and the third water channel groove (243) is in communication with the external water outlet (223) and the water pump serial outlet (212 b).

8. The steam generator of claim 1, wherein the water channel plate (22) comprises a front half plate and a rear half plate which are overlapped in a thickness direction, and the water channel plate (22) is provided with a threaded mounting post and/or a mounting boss (224).

9. The steam generator according to claim 1, further comprising an outer water tank fixedly mounted on an outer wall of the cartridge (4) and abutting the outer water outlet.

10. The steam generator according to any one of claims 1 to 9, wherein the box body (4) is a rectangular box, and the steam boiler (1), the water circuit board (22) and the water pump (21) are sequentially attached to each other along the length direction of the box cavity.