CN113384153B

CN113384153B - Evaporator and cooking device

Info

Publication number: CN113384153B
Application number: CN202110686714.2A
Authority: CN
Inventors: 赵鹏飞
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2022-04-05
Anticipated expiration: 2041-06-21
Also published as: CN113384153A

Abstract

The invention provides an evaporator and a cooking device, and relates to the technical field of cookers. The evaporator includes: the shell is enclosed into a hollow accommodating cavity, and is provided with a water inlet and a steam outlet which are communicated with the accommodating cavity; the first liquid distributor is arranged in the accommodating cavity and positioned below the water inlet so as to receive liquid entering the accommodating cavity from the water inlet; the first liquid distributor is arranged in a gap which penetrates through the first liquid distributor in the vertical direction and is used for enabling liquid to pass through the gap to form a water film; the heating pipe is arranged in the accommodating cavity and is positioned below the gap, and the heating pipe is used for enabling the water film to flow through the heating pipe to at least partially form water vapor; wherein, the water vapor is discharged from the accommodating cavity through the vapor outlet. The evaporator and the cooking device of the invention can effectively improve the steam outlet efficiency of the generated steam and reduce the space required by installation.

Description

Evaporator and cooking device

Technical Field

The invention belongs to the technical field of cookers, and particularly relates to an evaporator and a cooking device.

Background

A cooking apparatus is an appliance capable of performing food processing. Some cooking devices have a function of steaming food to meet the user's demand, such as steamed stuffed buns, steamed bread, fish, and the like. The related cooking device achieves cooking of food by providing an evaporator to generate water vapor. But the related evaporator has low steam outlet efficiency and large volume of the cooking device.

Disclosure of Invention

In view of the above, the present invention provides an evaporator and a cooking device, so as to solve the technical problem of how to improve the steam outlet efficiency of the evaporator and simultaneously meet the requirement of the cooking device for the compactness of the installation space.

The technical scheme of the invention is realized as follows:

the embodiment of the invention provides an evaporator which comprises a shell, a first evaporator and a second evaporator, wherein the shell is enclosed into a hollow accommodating cavity, and the shell is provided with a water inlet and a steam outlet which are communicated with the accommodating cavity; the first liquid distributor is arranged in the accommodating cavity and positioned below the water inlet so as to receive liquid entering the accommodating cavity from the water inlet; the first liquid distributor is arranged in a gap which penetrates through the first liquid distributor in the vertical direction and is used for enabling the liquid to pass through the gap to form a water film; the heating pipe is arranged in the accommodating cavity and is positioned below the gap, and the water film flows through the heating pipe to at least partially form water vapor; wherein the water vapor is discharged out of the accommodating cavity through the vapor outlet.

Further, the first liquid distributor extends along a first direction, and the gap penetrates through the first liquid distributor along the first direction; wherein the first direction is perpendicular to the vertical direction.

Further, the first liquid distributor includes two first vanes disposed on both sides of the gap, each of the first vanes being inclined outward from a bottom end adjacent to the gap to a top end.

Further, the evaporator further includes: and the second liquid distributor is arranged in the accommodating cavity, is positioned above the first liquid distributor and below the water inlet and is used for receiving the liquid entering from the water inlet and transmitting the liquid to the first liquid distributor.

Further, the second liquid distributor comprises two second vanes, the two second vanes are connected at a bottom end and each of the second vanes is inclined outwardly from the bottom end to a top end; wherein, at least one second blade is provided with a through hole along the vertical direction.

Further, the height from the through hole to the bottom end is larger than a preset value.

Further, the through holes are multiple, and the heights of the through holes from the bottom end to the bottom end are basically the same.

Further, the heating pipe includes a plurality of sub-heating pipes spaced apart in a vertical direction such that the water film flows through each of the sub-heating pipes.

Furthermore, the heating pipe also comprises adapter pipes, and each adapter pipe is connected with two adjacent sub-heating pipes so that the heating pipes are arranged in a reciprocating manner in multiple rows.

Further, the steam outlet is arranged at a position close to the top end of the shell.

The invention also provides a cooking device comprising the evaporator.

The present invention also provides a cooking apparatus comprising: the cooking device comprises a shell, a cooking cavity and a water inlet, wherein the shell is surrounded by the cooking cavity and is provided with the water inlet communicated with the cooking cavity; the first liquid distributor is arranged in the cooking cavity and positioned below the water inlet so as to receive liquid entering the cooking cavity from the water inlet; the first liquid distributor is arranged in a gap which penetrates through the first liquid distributor in the vertical direction and is used for enabling the liquid to pass through the gap to form a water film; a heating tube disposed within the cooking chamber and below the gap for heating food and causing the water film to flow through the heating tube to at least partially form water vapor.

Further, the cooking apparatus further includes: and the second liquid distributor is arranged in the cooking cavity, is positioned above the first liquid distributor and below the water inlet and is used for receiving the liquid entering from the water inlet and transmitting the liquid to the first liquid distributor.

The evaporator comprises a shell, a first liquid distributor and a heating pipe, wherein the first liquid distributor receives liquid entering from a water inlet, the first liquid distributor is arranged in a gap penetrating through the first liquid distributor in the vertical direction and used for enabling the liquid to pass through the gap to form a water film, and the heating pipe is arranged below the gap and enables at least part of the water film to form water vapor. According to the evaporator provided by the embodiment of the invention, liquid can form a water film through the gaps formed in the first liquid distributor, the water film has the characteristics of large area and thin thickness, and is easier to be heated and evaporated to form water vapor under the heating action of the heating pipe, so that the steam outlet efficiency of the evaporator is improved. And first liquid distributor and heating pipe all arrange along vertical direction and set up, and the width of first liquid distributor as long as be a bit bigger than the width of gap can accept the water that comes from the water inlet, and the effective heating of water film that flows through can be just a bit bigger than the width of gap to the external diameter of heating pipe, just so can be with holding the width setting of chamber littleer, can hold first liquid distributor and heating pipe. That is, the thickness of the evaporator is set to be smaller, thereby effectively satisfying the requirement of the cooking apparatus for the compactness of the installation space.

Drawings

FIG. 1a illustrates a state in which an evaporator according to an embodiment of the present invention is mounted on a cooking apparatus;

FIG. 1b is another installation state of the evaporator of the embodiment of the present invention on the cooking apparatus;

FIG. 2 is a front view of the internal structure of an evaporator according to an embodiment of the present invention;

FIG. 3 is a schematic perspective view of a first liquid distributor and a second liquid distributor of an evaporator according to an embodiment of the present invention;

FIG. 4 is a left side view showing the internal structure of an evaporator according to the embodiment of the present invention;

FIG. 5 is a schematic view of another first liquid distributor configuration of an evaporator according to an embodiment of the present invention;

FIG. 6 is an enlarged partial schematic view of FIG. 3 at A;

FIG. 7a is an enlarged partial schematic view at B of FIG. 4;

FIG. 7B is an enlarged partial schematic view at B of FIG. 4;

FIG. 8 is a schematic view of another second liquid distributor configuration for an evaporator according to an embodiment of the present invention;

FIG. 9 is a schematic height from the bottom end of the through-holes of a second liquid distributor according to an embodiment of the present invention;

fig. 10 is a perspective view of another cooking apparatus according to an embodiment of the present invention;

FIG. 11 is an enlarged partial schematic view of FIG. 10 at C;

fig. 12 is a schematic perspective view of another cooking apparatus according to another embodiment of the present invention from another perspective.

Description of reference numerals:

1-evaporator, 11-shell, 11A-water inlet, 11B-steam outlet, 111-accommodating cavity, 112-positioning piece, 113-cooking cavity, 12-first liquid distributor, 121-gap, 122-first blade, 13-heating pipe, 131-heating pipe, 132-adapter pipe, 14-second liquid distributor, 141-through hole, 142-second blade, 15-water receiving box, d-thickness of evaporator, h-height of through hole from bottom end

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The individual features described in the embodiments can be combined in any suitable manner without departing from the scope, for example different embodiments and aspects can be formed by combining different features. In order to avoid unnecessary repetition, various possible combinations of the specific features of the invention will not be described further.

In the following description, the term "first/second/so" is used merely to distinguish different objects and does not mean that there is a common or relationship between the objects. It should be understood that the description of the "upper", "lower", "outer" and "inner" directions as related to the orientation in the normal use state, and the "left" and "right" directions indicate the left and right directions indicated in the corresponding schematic drawings, and may or may not be the left and right directions in the normal use state.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. The "first direction" refers to the horizontal direction.

The invention provides an evaporator and a cooking device, wherein the evaporator is used for generating steam to cook food, and the cooking device can be a steam box and also can be a multifunctional cooking device, such as a microwave oven or an oven with the function of steaming food. It should be noted that the type of application scenario of the present invention does not limit the evaporator of the present invention. For convenience of explanation, the evaporator is used in the steam box as an example.

In the embodiment of the present invention, as shown in fig. 1a, the evaporator 1 is disposed outside the cooking appliance, and the evaporator 1 is independent from the cooking cavity of the cooking appliance. For example, the evaporator 1 may be disposed at the back of the cooking apparatus, which is the side opposite to the door of the cooking apparatus (the direction indicated by the y-axis shown in fig. 1 a); as shown in fig. 1b, the evaporator 1 may also be disposed at the side of the cooking apparatus (the direction shown by the x-axis in fig. 1 b), either at the left or right side. The position of the evaporator 1 on the cooking device can be flexibly set according to actual needs. As shown in fig. 2, the evaporator 1 comprises a shell 11, a first liquid distributor 12 and a heating tube 13. The casing 11 encloses into hollow chamber 111 that holds, and casing 11 has seted up and has held the water inlet 11A and the steam outlet 11B of chamber 111 intercommunication. Specifically, the housing 11 may be a substantially thin-walled member to lighten the structure of the evaporator 1. The shape and structure of the housing 11 can be set according to actual needs, and the outline thereof can be a substantially rectangular body, a cylinder, a polygonal body or an irregular body, and the description is continued by using the housing 11 having a rectangular outline as an example. The housing 11 may be provided with a positioning member 112, so that the housing 11 can be fixed on the cooking device. The housing 11 encloses a containing cavity 111, the shape of the containing cavity 111 depends on the outline shape of the housing 11, and a water inlet 11A communicated with the containing cavity 111 is arranged on the housing 11, so that liquid, such as water, can enter the containing cavity 111 from the water inlet 11A. The housing 11 is further provided with a steam outlet 11B communicating with the accommodating chamber 111 so that the steam generated by heating can be discharged out of the accommodating chamber 111 through the steam outlet 11B. The steam outlet 11B may communicate with a cooking cavity of the cooking apparatus, and the generated steam is introduced into the cooking cavity to cook food. The positions of the steam outlet 11B and the water inlet 11A on the shell 11 can be flexibly set according to actual needs.

Alternatively, the steam outlet 11B is provided at a position near the top end of the housing 11. Specifically, because steam density is little, the steam of production can move from bottom to top to the gathering is at the upper end that holds chamber 111, with the position setting that steam outlet 11B is close to casing 11 top, and steam discharges more easily and holds chamber 111.

Alternatively, water may be delivered to the water inlet 11A by providing a water pump.

As shown in fig. 2 and 3, the first liquid distributor 12 is disposed in the accommodating chamber 111 below the water inlet 11A to receive the liquid entering the accommodating chamber 111 from the water inlet 11A. Specifically, in the use state, the first liquid distributor 12 is disposed below the water inlet 11A, so that the liquid flowing out from the water inlet 11A can flow onto the first liquid distributor 12 under the action of gravity, and the structure and shape of the first liquid distributor 12 can be set according to actual needs, for example, the cross section can be a V-shaped structure as shown in fig. 4, or a circular arc-shaped structure as shown in fig. 5, and the cross section refers to a plane perpendicular to the length extension direction of the first liquid distributor 12. Of course, the cross section of the first liquid distributor 12 may have other shapes as long as the first liquid distributor 12 can receive the liquid from the water inlet 11A.

As shown in fig. 6 and 7a, the first liquid distributor 12 opens at a slit 121 penetrating the first liquid distributor 12 in a vertical direction for passing liquid through the slit 121 to form a water film. Specifically, the gap 121 penetrates through the first liquid distributor 12 in the vertical direction, that is, the gap 121 only needs to have at least one part penetrating along the vertical direction or the gap 121 does not extend along the vertical direction but has an included angle (acute angle) with the vertical direction, as long as the projection of the gap 121 in the vertical direction can penetrate through the first liquid distributor 12, the liquid can make water pass through the gap 121 under the action of gravity, and the gap 121 does not need to be completely opened along the vertical direction, for example, the gap 121 may be inclined at a certain angle with the vertical direction as shown in fig. 7 b. The slit 121 is a slit-like structure having a width (length in the left-right direction shown in fig. 7 a) much smaller than a length (length in the direction indicated by the arrow shown in fig. 6). Under the action of tension, water forms a water film in the process of flowing through the gap 121 from top to bottom. The length of the gap 121 determines the length of the water film, and the longer the water film, the larger the water film area. The length of the water film can be increased by increasing the length of the gap 121. The width of the gap 121 is not preferably too large, and the too large width of the gap 121 may prevent water from forming a water film, such as water drops and water columns, when the water passes through the gap 121. The width of the gap 121 is also not small enough, and the small width of the gap 121 may cause water to pass through the gap 121 or make it difficult to pass through the gap. Alternatively, the width of the gap 121 may be 0.1 to 2mm, and preferably, the width thereof may be 1 mm. It can be understood that, under the same volume, compared with liquid water in structural forms such as water drops and water columns, the water film has the characteristics of large area and thin thickness, so that the water film has a larger heat exchange area, water vapor is easier to form through heating, and the steam outlet efficiency is improved.

As shown in fig. 2 and 4, the heating pipe 13 is disposed in the accommodating chamber 111 below the slit 121 for allowing a water film to flow through the heating pipe 13 to at least partially form water vapor, and the water vapor is discharged from the accommodating chamber 111 through the vapor outlet 11B. Specifically, the heating pipe 13 can generate heat when being powered on, and the meaning that the heating pipe 13 is disposed below the slit 121 means that the projection of the slit 121 and the heating pipe 13 on the horizontal plane at least partially coincide, and then the water film flowing down from the slit at least partially falls onto the surface of the heating pipe 13 to be heated. Preferably, the heating tube 13 is arranged directly below the slit 121, i.e.: the projection of gap 121 on the horizontal plane all falls into heating pipe 13 in the projection of horizontal plane, and the water film descends to heating pipe 13 back, under the reposition of redundant personnel effect of heating pipe 13, can divide into the comparatively impartial water film of two with the water film, and the area of contact of every water film and heating pipe 13 is all roughly the same, can more effectively utilize the heating surface of heating pipe 13 like this, improves heating efficiency. The heating pipe 13 is spaced a predetermined distance from the first liquid distributor 12. The distance determines the width of the water film, the preset distance can be adjusted in actual conditions, and the distance is not suitable to be too large, on one hand, the water film is easy to break and split in the process of descending to the heating pipe 13 due to the too large distance, and the water film is incomplete; on the other hand, too large a distance setting increases the length of the entire evaporator 1 in the vertical direction. The distance can be appropriately reduced on the basis that the distance can form a water film, so that the length of the evaporator 1 in the vertical direction is smaller, and the structure of the evaporator 1 is further miniaturized. The water film flowing out of the slit 121 can flow onto the heating pipe 13 and form water vapor under the heating action of the heating pipe 13. The specific structure of the heating pipe 13 can be set according to actual needs, and the extension length of the heating pipe 13 in the horizontal direction can be slightly larger than the length of the water film, so that the whole water film can contact with the heating pipe 13 and be heated. Preferably, the longitudinal extension direction of the heating pipe 13 is substantially parallel to the longitudinal extension direction of the slit 121, so that the water film is more easily lowered onto the heating pipe 13, thereby effectively utilizing the heating surface of the heating pipe 13.

For the evaporator with larger power, a plurality of rows of heating pipes 13 can be arranged along the vertical direction to play a role of heating the water film step by step, so that more water vapor is generated, and the evaporation efficiency of the water film is improved. The water film is sequentially contacted with each row of heating pipes from top to bottom under the action of gravity, the water film is distributed on the surfaces of the heating pipes in a film shape, water vapor is formed by heating and evaporation, and the thickness of the water film is gradually reduced in the heating process. For evaporators with lower power, only one row of heating pipes 13 can be arranged in one evaporator, so that the heating effect on a water film can be achieved, the power of the heating pipes 13 is lower, a part of electric energy can be effectively saved, and the structural cost is lower. The outer diameter of the heating pipe 13 can be slightly larger, and the surface area of the heating pipe 13 is increased to improve the heat exchange area between the heating pipe 13 and a water film, so that the steam outlet efficiency is further improved. Preferably, the outer diameter of the heating pipe 13 may be 6.6 mm. The water film can be completely formed into water vapor or partially formed into water vapor through the heating action of the heating pipe 13, the water film without the water vapor is continuously flowed downwards to the bottom of the shell 11 to be collected, when more and more water is collected at the bottom of the accommodating cavity 111 of the shell 11 and can contact the heating pipe 13, the water can be continuously heated to form the water vapor, and therefore the steam outlet efficiency is further improved. With the plurality of rows of heating pipes 13, the last row of heating pipes 13 can be kept at a small interval from the inner wall surface of the bottom of the housing 11, so that the water collected at the bottom of the housing 11 can more easily contact the heating pipes 13 to be heated by the heating pipes 13. As shown in fig. 2, the generated water vapor may be discharged from the accommodating chamber 111 through the vapor outlet 11B into the cooking chamber of the cooking apparatus, thereby cooking food in the cooking chamber.

Preferably, as shown in fig. 4, the heating pipe 13 includes a plurality of sub-heating pipes 131 spaced apart in a vertical direction such that the water film flows through each sub-heating pipe 131. Specifically, by providing a plurality of sub-heating pipes 131 in the vertical direction, each sub-heating pipe 131 may be a single heating pipe independent of each other. The water film can flow through each sub-heating pipe 131 from top to bottom, so that the water film is heated step by step, the heating efficiency is further improved, and the steam outlet efficiency of the evaporator is further improved.

Optionally, as shown in fig. 2, the heating tube 13 further includes adapter tubes 132, and each adapter tube 132 connects two adjacent sub-heating tubes 131, so that the heating tubes 13 are arranged in a plurality of reciprocating rows. Specifically, by the connection effect of the adapter tube 132, the sub-heating tubes 131 are connected to form a heating tube, so as to form a serpentine reciprocating bending structure, and thus, only one heating tube 13 is arranged in the accommodating cavity, so that multi-stage heating of the water film can be realized.

Optionally, the water pump may be a circulating water pump, and a water outlet may be further formed in the housing 11, and water collected at the bottom of the housing 11 may be discharged from the water outlet and circulated to the water inlet 11A by the circulating water pump. Therefore, the water can be recycled, and the phenomenon that the normal work of the evaporator is influenced due to the excessive water amount accumulated in the shell 11 can be effectively avoided.

Optionally, the thermistor and the control board may be arranged to control the temperature of the water vapor to maintain the temperature within a certain range, and after the thermistor feeds the temperature back to the control board, the control board may adjust the flow rate of the water pump.

The working process of the evaporator provided by the embodiment of the invention is as follows: water enters the accommodating cavity 111 from the water inlet 11A, then flows to the first liquid distributor 12 below the water inlet 11A, and forms a water film through the gap 121 of the first liquid distributor 12, the water film flows onto the heating pipe 13, at least part of the water film is heated to form water vapor, the water film which is not heated to form the water vapor is collected at the bottom of the shell 11, and when the collected water amount is large and can contact with the heating pipe 13, the water can be continuously heated and evaporated under the heating action of the heating pipe 13 to form the water vapor. The water vapor of the two parts can be discharged out of the accommodating cavity 111 through the vapor outlet 11B, and the water vapor is transmitted to the cooking cavity of the cooking device, so that the food can be cooked in the cooking cavity.

It is understood that in the evaporator according to the embodiment of the present invention, the slit 121 is formed in the first liquid distributor 12, and the water film is formed by the slit 121, so that the width (the length in the left-right direction as shown in fig. 4) of the first liquid distributor 12 can be set to be small, and the width of the slit 121 can be slightly larger than the width of the slit 12 to receive the water from the water inlet 11A. Similarly, the outer diameter of the heating pipe 13 disposed below the slit 121 may be slightly larger than the width of the slit 121, and may be heated by contacting the water film descending from the slit 121. Accordingly, the width (the length in the left-right direction as shown in fig. 4) of the housing cavity 111 of the housing 11 can also be set smaller. That is, in the view shown in fig. 4, the pitch of the casing 11 on the left and right sides of the casing 11 can be set smaller, so that the thickness d (length in the left-right direction shown in fig. 4) of the evaporator 1 is smaller. The evaporator 1 with small thickness is arranged on the cooking device, as shown in fig. 1a, the evaporator 1 is arranged on the back of the cooking device, and the lengths of the cooking device and the evaporator in the y-axis direction can be effectively reduced; as shown in fig. 1b, the evaporator 1 is installed at a side of the cooking appliance, and the length of the cooking appliance and the evaporator in the x-axis direction can be effectively reduced. Thus, the requirement of the cooking device on the compactness of the installation space can be effectively met.

In some embodiments, as shown in fig. 2, the first liquid distributor 12 extends in a first direction (left-right direction as shown in fig. 2) that is perpendicular to the vertical direction. Specifically, the first liquid distributor 12 may extend along the horizontal direction, and the water from the water inlet 11A may be more uniformly distributed on the first liquid distributor 12, along the horizontal direction, so that the thickness of the water film flowing out from the gap 121 may be more uniform, and the film forming effect is better. The slits 121 extend through the first liquid distributor 12 in a first direction. Specifically, in the horizontal direction, the slit 121 may extend from one end of the first liquid distributor 12 to the other end thereof, so as to form a long and narrow slit, and the longer the slit 121 is, the longer the length of the water film can be formed, that is, the larger the area of the water film is, so as to increase the heat exchange area between the water film and the heating pipe 13, and further increase the steam outlet efficiency of the evaporator. Through the length that runs through first liquid distributor setting with effective increase water film with the gap along first direction to improve the play vapour efficiency of evaporimeter, and this simple structure and easy machine-shaping.

In some embodiments, as shown in fig. 4, the first liquid distributor 12 includes two first blades 122 disposed on both sides of the gap 121, each first blade 122 sloping outward from a bottom end adjacent to the gap 121 to a top end. Specifically, the first blade 122 may have a planar structure as shown in fig. 4, or may have an arc-shaped structure as shown in fig. 5, and the description will be continued by using the planar structure as shown in fig. 4. The gap 121 is located between the bottom ends of the two first blades 122, the bottom end of each first blade 122 extends to the top end, and the first blades 122 are inclined at a certain angle with the vertical direction, so that the two first blades 122 form a V-shaped structure, the opening with the larger upper end can more easily receive water from the water inlet 11A, the water flows through the inner wall surface of the inclined first blades 122 and is collected to the bottom of the V-shaped structure, and the water can more easily flow into the gap 121. And the width (length in the left-right direction as shown in fig. 4) of the first liquid distributor 12 can be reduced by reducing the included angle between the two first blades 122, so as to reduce the space volume occupied by the first liquid distributor 12 in the accommodating chamber 111. Through setting up the first liquid distributor into the concrete structural style of two first blades, two first blades form the structure of V-arrangement to in accept the water that comes from the water inlet, and the setting of this structure is simple, and is with low costs, easily production and processing.

In some embodiments, as shown in fig. 2 and 3, the evaporator 1 further includes a second liquid distributor 14 disposed in the accommodating chamber 111 above the first liquid distributor 12 and below the water inlet 11A for receiving the liquid from the water inlet 11A and transferring the liquid to the first liquid distributor 12. In particular, the second liquid distributor 14 is arranged between the water inlet 11A and the first liquid distributor 12 to receive water from the water inlet 11A, the second liquid distributor 14 being also able to transfer water onto the first liquid distributor 12. If the second liquid distributor 14 is not arranged, water directly flows from the water inlet 11A to the first liquid distributor 12, then along the horizontal direction, the water amount of the position of the first liquid distributor 12 close to the water inlet 11A is concentrated, and the water amount of the position far away from the water inlet 11A is less or no water, so that the water amount distribution of the first liquid distributor 12 is uneven, and the thickness of the formed water film is uneven. Through setting up second liquid distributor 14 and carrying out the water conservancy diversion, can make the water yield that rivers flow to first liquid distributor 12 distribute more evenly in the horizontal direction to the water film thickness that the gap 121 formed that makes to flow through is more even, further improves out vapour efficiency.

In some embodiments, as shown in fig. 3 and 4, the second liquid distributor 14 includes two second vanes 142, the two second vanes 142 being connected at a bottom end and each second vane 142 sloping outward from the bottom end to a top end. Specifically, the specific structure and shape of the second blade 142 can be set with reference to the first blade 122, so that the processing difficulty of the first and second liquid distributors can be effectively reduced, and the processing cost is reduced. The bottom ends of the two second blades 142 are fixedly connected together, and the two second blades 142 may be integrally formed, or may be fixedly connected by welding or bonding. At least one second blade 142 is provided with a through hole 141 in a vertical direction. Specifically, the through holes 141 penetrate the second vane 142 in a vertical direction, so that the water flowing onto the second liquid distributor 14 can continue to flow downward to the first liquid distributor 12 through the through holes 141. One or more through holes 141 may be provided. Illustratively, a plurality of through holes 141 are provided. In the first direction (the direction indicated by the arrow shown in fig. 4), the plurality of through holes 141 are arranged at intervals. Like this along first direction, water can be through each through-hole 141 even distribution to first liquid distributor 12 on to make first liquid distributor 12 can even water of holding, thereby make the water film thickness that gap 121 formed can be more even. The through holes 141 may be formed in only one second blade 142, as shown in fig. 8, or the through holes 141 may be formed in both second blades 142, so that the water outlet efficiency is higher. Through setting the second liquid distributor to the concrete structural style of two second blades, two first blades form the structure of V type to in accept the water that comes from the water inlet, and set up the through-hole on the second blade in order to with the water equipartition on first liquid distributor, thereby make the water film thickness that forms from the gap more even, this simple structure easily manufactures.

In some embodiments, as shown in fig. 9, the height h from the through hole 141 to the bottom end is greater than a preset value. It should be noted that the height h is the distance between the center of the through hole 14 and the horizontal plane of the bottom end of the second liquid distributor 14. Specifically, the through hole 141 may be formed at the bottom end of the second liquid distributor 14, or may be formed at a position having a certain height from the bottom end, such that the water flowing into the accommodating cavity 111 from the water inlet 11A first flows to the bottom end of the second liquid distributor 14 to be collected and spread along the length direction, and when the water level line can overflow the through hole 141, the water flows down from the through hole 141 to the first liquid distributor 12. Compare in directly seting up the bottom at second liquid distributor 14 with through-hole 141, this kind of mode of setting can effectively guarantee that second liquid distributor 14 homoenergetic goes out water on the horizontal direction to effectively guarantee the length of water film. Alternatively, h may be 1-3 mm.

Preferably, the through holes 141 have a plurality, and the height h of the plurality of through holes 141 to the bottom end is substantially the same. In particular, the uniformity and consistency of the water outlet of each through hole 141 of the second liquid distributor 14 in the horizontal direction can be effectively ensured, so as to further ensure the uniformity of the thickness of the water film.

The evaporator of the embodiment of the invention can be arranged outside the cooking cavity of the cooking device as an independent part and can also be arranged in other modes. In other embodiments, as shown in fig. 10, the cooking device comprises a housing 11, a first liquid distributor 12 and a heating pipe 13. As shown in fig. 10 and 11, the casing 11 encloses a cooking cavity 113, and the casing 11 is provided with a water inlet 11A communicated with the cooking cavity 113. Specifically, the housing 11 is used to enclose a cooking cavity 113 of the cooking apparatus, and the cooking cavity 113 is a cavity for directly cooking food. The water inlet 11A may introduce water into the cooking chamber 113.

As shown in fig. 10, the first liquid distributor 12 is disposed in the cooking chamber 113 below the water inlet 11A to receive the liquid entering the cooking chamber 113 from the water inlet 11A, and the first liquid distributor 12 is opened at a slit 121 vertically penetrating the first liquid distributor 12 for passing the liquid through the slit 121 to form a water film. In particular, the first liquid distributor 12 is directly arranged in the cooking chamber 113, for example, it may be arranged near the back of the cooking chamber 113 to realize the division of the functional area. The shape, structure and function of the first liquid distributor 12 can be referred to the first liquid distributor 12, and will not be described herein.

As shown in fig. 10, the heating tube 13 is disposed within the cooking chamber 113 below the gap 121 for heating the food and causing a film of water to flow through the heating tube to at least partially form water vapor. Specifically, the structure of the heating pipe 13 can also refer to the heating pipe 13. The difference is that the heating pipe 13 can be used for heating the water film into water vapor and also can be directly used for heating food, and has the function of one pipe for multiple purposes. And by the direct production of heating pipe 13 heating steam that generates in culinary art chamber 113, can directly cook food, need not to set up the steam outlet in addition on casing 11 and transmit steam to culinary art chamber 113 to it is more convenient in the use, also better to the culinary art effect of food, culinary art efficiency is high.

Optionally, as shown in fig. 12, a water receiving box 15 may be further disposed in the cooking cavity 113 of the cooking apparatus, and the water receiving box 15 may be disposed below the heating pipe 13, so that a water film that is not heated to form water vapor may flow downwards along the heating pipe 13 into the water receiving box 15, thereby preventing water from accumulating in the cooking cavity 113.

Through all directly setting up first liquid distributor and heating pipe in cooking device's culinary art intracavity, the culinary art chamber is the cavity of culinary art food, also is the cavity that is used for producing steam simultaneously, can effectively avoid like this to lead to whole cooking device's structure volume to be big on the side because of the evaporimeter setting is in cooking device's outside, and the structure is arranged compactly, is favorable to the miniaturized design of cooking device structure. The heating pipe heats the generated water vapor to be directly generated in the cooking cavity, so that the food in the cooking cavity can be directly cooked, namely, the food is generated and cooked, and the cooking efficiency is higher; and the heating pipe can also heat the food in a heat radiation mode, thereby further improving the cooking efficiency.

In other embodiments, as shown in fig. 10, the cooking apparatus further comprises a second liquid distributor 14 disposed in the cooking cavity 113 above the first liquid distributor 12 and below the water inlet 11A for receiving the liquid from the water inlet 11A and transferring the liquid to the first liquid distributor 12. In particular, the second liquid distributor 14 is also arranged directly inside the cooking chamber 113. The shape, structure and function of the second liquid distributor 14 can be referred to the second liquid distributor 14, and will not be described herein.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. An evaporator, comprising:

the steam-water separator comprises a shell (11) which is enclosed into a hollow accommodating cavity (111), wherein the shell (11) is provided with a water inlet (11A) and a steam outlet (11B) which are communicated with the accommodating cavity (111);

a first liquid distributor (12) arranged in the accommodating cavity and positioned below the water inlet (11A) so as to receive liquid entering the accommodating cavity (111) from the water inlet (11A); the first liquid distributor (12) is arranged in a gap (121) which penetrates through the first liquid distributor (12) in the vertical direction and is used for enabling the liquid to pass through the gap (121) to form a water film;

a heating pipe arranged in the accommodating cavity (111) and below the gap (121) for enabling the water film to flow through the heating pipe (13) to at least partially form water vapor; wherein the water vapor is discharged from the accommodating chamber (111) through the vapor outlet (11B).

2. An evaporator according to claim 1 wherein the first liquid distributor (12) extends in a first direction, the slits (121) extending through the first liquid distributor (12) in the first direction; wherein the first direction is perpendicular to the vertical direction.

3. An evaporator according to claim 2 wherein the first liquid distributor (12) comprises two first vanes (122) disposed on either side of the gap (121), each of the first vanes being inclined outwardly from a bottom end adjacent the gap (121) to a top end.

4. An evaporator according to any one of claims 1 to 3, further comprising:

the second liquid distributor (14) is arranged in the containing cavity (111), is positioned above the first liquid distributor (12) and below the water inlet (11A), and is used for receiving liquid entering from the water inlet (11A) and transmitting the liquid to the first liquid distributor (12).

5. A vaporizer as claimed in claim 4, wherein the second liquid distributor (14) comprises two second vanes (142), the two second vanes (142) being connected at a bottom end and each second vane (142) being inclined outwardly from the bottom end to a top end; wherein at least one second blade (142) is provided with a through hole (141) along the vertical direction.

6. An evaporator according to claim 5 wherein the height (h) of the through hole (141) to the bottom end is greater than a preset value.

7. The evaporator as recited in claim 6, wherein said through holes (141) have a plurality thereof, and a height of a plurality of said through holes to said bottom end is the same.

8. The evaporator of claim 1, wherein the heating duct (13) comprises a plurality of sub-heating ducts (131) spaced apart in a vertical direction such that the water film flows through each of the sub-heating ducts.

9. The evaporator of claim 8, wherein the heating tube (13) further comprises adapter tubes (132), each adapter tube connecting two adjacent sub-heating tubes, so that the heating tubes are arranged in a reciprocating multiple-row arrangement.

10. An evaporator according to claim 1 wherein the steam outlet (11B) is provided at a position near the top end of the housing (11).

11. A cooking device, comprising: an evaporator according to any one of claims 1 to 10.

12. A cooking device, comprising:

the cooking device comprises a shell (11) which is enclosed into a cooking cavity (113), and the shell is provided with a water inlet (11A) communicated with the cooking cavity; wherein the cooking cavity (113) is a cavity for directly cooking food;

a first liquid distributor (12) arranged in the cooking chamber (113) and below the water inlet (11A) to receive liquid entering the cooking chamber (113) from the water inlet (11A); the first liquid distributor (12) is arranged in a gap (121) penetrating through the first liquid distributor in the vertical direction and used for enabling the liquid to pass through the gap to form a water film;

a heating tube (13) disposed within the cooking chamber below the gap for heating the food and causing the film of water to flow through the heating tube to at least partially form water vapor.

13. The cooking device of claim 12, further comprising:

and the second liquid distributor (14) is arranged in the cooking cavity, is positioned above the first liquid distributor and below the water inlet and is used for receiving the liquid entering from the water inlet and transmitting the liquid to the first liquid distributor.