CN112263205A - Disinfection structure, dish washing machine and control method - Google Patents

Abstract

The invention discloses a disinfection structure, a dish washing machine and a control method. Above-mentioned disinfection structure, because among the above-mentioned disinfection structure, the superheated steam subassembly for forming superheated steam sets up on the second pipeline, switches the main pipeline between first pipeline and second pipeline through the switching piece and can realize rinsing and the sterile switching of superheated steam, need not to set up the pipeline of sending water alone, the circuit or the space of power transmission, and the structure is simpler, and it is littleer to occupy the space, is favorable to realizing the miniaturization of equipment.

Description

Disinfection structure, dish washing machine and control method

Technical Field

The invention relates to the technical field of kitchen equipment, in particular to a disinfection structure, a dish washing machine and a control method.

Background

Along with the house towards the direction development of miniaturization, compactification, people integrate the demand for the domestic appliance function and also constantly increase, and the domestic appliance who integrates can occupy less indoor space, reducible potential needs simultaneously, and it is more convenient to use, for example the disinfection function is generally integrated to present stage dish washer, and the disinfection mainly adopts ultraviolet disinfection, medium and high temperature disinfection etc. but these means disinfection is incomplete.

The temperature of the superheated steam meets the temperature required by high-temperature disinfection, and the heat transfer of the superheated steam takes gaseous water molecules as media, so that the heat conduction performance of the superheated steam is higher. Because the sterilization object of the dish washer is tableware which is mostly made of ceramics, glass and metal products, the dish washer can be well matched with the superheated steam sterilization technology. But the interior firing equipment of dish washer sets up alone among traditional superheated steam disinfection mode, needs additionally to provide space and circuit and installs, and the structure is complicated, and equipment volume is great.

Disclosure of Invention

Based on the above, the invention provides the disinfection structure, the dish washing machine and the control method, which have the advantages of simple structure and small volume, and the defects of complex structure and large volume in the existing superheated steam disinfection.

The technical scheme is as follows:

a disinfection structure comprises a main pipeline, a switching piece, a first pipeline and a second pipeline, wherein the first pipeline and the second pipeline are respectively communicated with an inner cavity, the main pipeline is communicated with the first pipeline and the second pipeline through the switching piece, the switching piece is used for enabling the main pipeline to be communicated with the first pipeline or the second pipeline, a superheated steam component is arranged on the second pipeline, and the superheated steam component is used for heating water into superheated steam.

Above-mentioned disinfection structure, when switching piece communicates main line and first pipeline, can be used to carry water and carry out the rinsing, after the rinsing, switching piece switches the main line to communicate with the second pipeline, after water gets into the second pipeline, can be used for the disinfection for superheated steam by the superheated steam subassembly heating, because in the above-mentioned disinfection structure, a superheated steam subassembly for forming superheated steam sets up on the second pipeline, switch the main line between first pipeline and second pipeline through switching piece and can realize rinsing and the sterile switching of superheated steam, need not to set up the pipeline of sending water alone, the circuit or the space of power transmission, the structure is simpler, it is littleer to occupy the space, be favorable to realizing the miniaturization of equipment.

In one embodiment, the second pipeline comprises a pressurizing part, and the cross-sectional area of a channel in the pressurizing part is gradually reduced along the direction away from the switching piece.

In one embodiment, the sterilization structure further includes a third pipeline, the third pipeline is respectively communicated with the inner cavity and the second pipeline, and a pressure release valve is disposed on the third pipeline.

In one embodiment, the connection between the third pipeline and the second pipeline is arranged between the pressurization part and the superheated steam component.

In one embodiment, the superheated steam assembly comprises a first vaporizing part and a second vaporizing part, wherein the first vaporizing part is used for heating water to generate steam, and the second vaporizing part is used for heating the steam to generate the superheated steam.

In one embodiment, the first vaporizing element comprises a nozzle and a first heater, the first heater is used for heating the nozzle, the second vaporizing element is a conduit, the conduit is communicated with the nozzle, and the conduit is made of heat conducting materials.

In one embodiment, the first heater is disposed around the nozzle.

In one embodiment, an insulating protective layer is arranged outside the nozzle, and the first heater is arranged between the nozzle and the insulating protective layer.

In one embodiment, the inner diameter of the nozzle is gradually reduced along the direction close to the second vaporizing part, and the end with the smaller inner diameter of the nozzle extends into the second vaporizing part.

In one embodiment, the second vaporization member and the nozzle are ceramic materials.

In one embodiment, the main pipeline is communicated with the inner cavity, and a conveying part for conveying water towards the direction of the switching part is arranged on the main pipeline.

In one embodiment, the above-mentioned disinfection structure further comprises a second heater, which is disposed on the first pipeline and is used for heating the water in the first pipeline.

In one embodiment, a pressurizing piece is arranged on the second pipeline and used for increasing the water pressure in the second pipeline.

A dish washing machine comprises a box body and a disinfection structure, wherein an inner cavity is formed in the box body.

Above-mentioned dish washer, when the switching piece communicates main line and first pipeline, first pipeline can carry water to the inner chamber and carry out the rinsing, after the rinsing, the switching piece switches the main line to communicate with the second pipeline, after water gets into the second pipeline, can be heated by superheated steam subassembly and be superheated steam, superheated steam sends into the inner chamber and is used for disinfecting, because in the dish washer, a superheated steam subassembly for forming superheated steam sets up on the second pipeline, switch the main line between first pipeline and second pipeline through the switching piece and can realize rinsing and the sterile switching of superheated steam, need not to set up the pipeline of sending water alone, the circuit or the space of power transmission, the structure is simpler, it is littleer to occupy the space, be favorable to realizing the miniaturization of above-mentioned dish washer.

In one embodiment, a spray arm is arranged in the inner cavity, the spray arm is rotatably arranged in the box body, a channel is arranged in the spray arm, a plurality of nozzles are arranged on the spray arm and communicated with the channel, and one end, far away from the main pipeline, of the first pipeline is communicated with the channel.

In one embodiment, an end of the second conduit remote from the main conduit communicates with the channel.

In one embodiment, the dishwasher further comprises a dish rack disposed above the spray arm, and the spray nozzle is disposed toward the dish rack.

In one embodiment, a water collecting tank is arranged at the bottom of the inner cavity, and the main pipeline is communicated with the water collecting tank.

In one embodiment, the dishwasher further comprises a water inlet pipe and a water outlet pipe, wherein the water inlet pipe and the water outlet pipe are communicated with the water collecting tank.

A control method for a dishwasher according to any one of the preceding claims, comprising the steps of:

the switching piece is used for communicating the main pipeline with the first pipeline and delivering water into the inner cavity;

the switching piece is used for communicating the main pipeline with the second pipeline, and the superheated steam component is used for heating water into superheated steam.

According to the control method, when the main pipeline is communicated with the first pipeline through the switching piece, the first pipeline can convey water to the inner cavity for rinsing, after rinsing is finished, the main pipeline is switched to be communicated with the second pipeline through the switching piece, after water enters the second pipeline, the water can be heated into superheated steam through the superheated steam component, the superheated steam is conveyed into the inner cavity for disinfection, and due to the fact that the superheated steam component for forming the superheated steam is arranged on the second pipeline in the dish washing machine, the main pipeline is switched between the first pipeline and the second pipeline through the switching piece, the rinsing and the superheated steam disinfection can be switched, the water conveying pipeline, the power conveying line or space do not need to be independently arranged, the structure is simpler, the occupied space is smaller, and the miniaturization of the dish washing machine is facilitated.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and are not intended to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a dishwasher according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a superheated steam component according to an embodiment of the present invention, in which an insulating protection layer is partially cut away.

Description of reference numerals:

100. the device comprises a main pipeline, 200, a switching piece, 300, a first pipeline, 400, a second pipeline, 410, a pressurizing part, 500, a superheated steam component, 510, a first vaporizing piece, 511, a nozzle, 512, a first heater, 513, an insulating protective layer, 520, a second vaporizing piece, 600, a third pipeline, 610, a pressure relief valve, 700, a conveying piece, 800, a second heater, 10, a box body, 11, an inner cavity, 12, a spray arm, 13, a spray nozzle, 14, a conveying pipe, 15, a tableware rack, 16, a water collecting tank, 17, a water inlet pipe, 18 and a water discharging pipe.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

As shown in fig. 1, an embodiment discloses a sterilization structure, which includes a main pipeline 100, a switching member 200, a first pipeline 300 and a second pipeline 400, wherein the first pipeline 300 and the second pipeline 400 are respectively communicated with an inner cavity 11, the main pipeline 100 is communicated with the first pipeline 300 and the second pipeline 400 through the switching member 200, the switching member 200 is used for communicating the main pipeline 100 with the first pipeline 300 or the second pipeline 400, the second pipeline 400 is provided with a superheated steam component 500, and the superheated steam component 500 is used for heating water into superheated steam.

Above-mentioned disinfection structure, when switching piece 200 communicates main pipeline 100 with first pipeline 300, can be used to carry water and carry out the rinsing, after the rinsing, switching piece 200 switches main pipeline 100 to communicate with second pipeline 400, after water gets into second pipeline 400, can be used for disinfecting for superheated steam by superheated steam subassembly 500 heating, because in the above-mentioned disinfection structure, superheated steam subassembly 500 for forming superheated steam sets up on second pipeline 400, switch main pipeline 100 between first pipeline 300 and second pipeline 400 through switching piece 200 and can realize the switching of rinsing and superheated steam disinfection, need not to set up the pipeline of sending water alone, the circuit or the space of power transmission, the structure is simpler, it is littleer to occupy the space, be favorable to realizing the miniaturization of equipment.

In one embodiment, as shown in fig. 1, the second pipe 400 includes a pressurizing part 410, and the cross-sectional area of the passage in the pressurizing part 410 is gradually reduced in a direction away from the switch 200. After the water flows into the pressurizing part 410 of the second pipeline 400, the water pressure is correspondingly increased along with the reduction of the cross-sectional area, the flow rate is increased, the pressurized water is heated by the superheated steam component 500, the formed superheated steam has higher initial speed and can flow faster, the heating speed is higher, and the uniform temperature field can be formed as soon as possible. Meanwhile, the superheated steam can be formed by fully heating with a small amount of water, and the consumption of the water amount is small under the condition of realizing the superheated steam sterilization.

Alternatively, the second pipe 400 is a circular pipe, and the pipe diameter of the pressurizing part 410 is gradually reduced in a direction away from the switching member 200.

Optionally, the pressurization section 410 is a section on the second pipeline 400; or the second pipeline 400 includes a first branch pipe and a second branch pipe, and both ends of the pressurization part 410 are respectively communicated with the first branch pipe and the second branch pipe.

In one embodiment, as shown in fig. 1, the above-mentioned disinfection structure further includes a third pipeline 600, the third pipeline 600 is respectively communicated with the inner cavity 11 and the second pipeline 400, and a pressure relief valve 610 is disposed on the third pipeline 600. When the pressure in the second pipeline 400 is too high, the pressure can be released through the pressure release valve 610, so that the system is protected, and the safety is improved.

In one embodiment, as shown in fig. 1, the connection of the third pipeline 600 and the second pipeline 400 is provided between the pressurization part 410 and the superheated steam assembly 500. After the pressure increasing portion 410 increases the water pressure in the second pipeline 400, the water pressure is large, and at this time, a part of the pressure can be discharged by the pressure relief valve 610, so that the normal operation of the system is protected.

In other embodiments, the connection point between the third pipeline 600 and the second pipeline 400 may be disposed between the switching member 200 and the pressurizing unit 410, so that the water pressure is reduced in advance, and the water can be pressurized by the pressurizing unit 410 and then can be in a safe pressure range, thereby protecting the system.

In one embodiment, as shown in fig. 1 and 2, the superheated steam assembly 500 includes a first vaporizing part 510 and a second vaporizing part 520, the first vaporizing part 510 is used for heating water to generate steam, and the second vaporizing part 520 is used for heating steam to generate superheated steam. Through twice heating, the water is vaporized and reheated, superheated steam with higher temperature is guaranteed to be formed, and the disinfection effect is improved.

Specifically, in the present embodiment, the first vaporizing member 510 is used to heat water to generate steam. In addition, the end of the first vaporization member 510 may be provided with an atomization hole to facilitate heating of the second vaporization member 520.

In other embodiments, the superheated steam assembly 500 may be a long length heating pipe, so that the water is heated for a long time and still heated after being vaporized to form superheated steam.

In one embodiment, as shown in fig. 2, the first vaporizing element 510 includes a nozzle 511 and a first heater 512, the first heater 512 is used for heating the nozzle 511, the second vaporizing element 520 is a conduit, the conduit is communicated with the nozzle 511, and the conduit is a heat conductive material. Because the guide pipe is made of heat conducting materials, when the first heater 512 heats the nozzle 511, the nozzle 511 can conduct heat to the guide pipe, so that the guide pipe is also in a high-temperature state, water passes through the nozzle 511, is heated into steam, then enters the guide pipe and is heated by the guide pipe, the steam is further heated to form superheated steam, and the disinfection effect can be improved. Meanwhile, the structure for heating to form superheated steam is simple, the occupied space is small, and the miniaturization of equipment is facilitated.

In other embodiments, another heater may be provided at the second vaporizing part 520 to reheat the steam into superheated steam.

In one embodiment, as shown in FIG. 2, the first heater 512 is disposed around the nozzle 511. The first heater 512 is wound around the nozzle 511 to heat the water sufficiently to form steam.

Specifically, the first heater 512 is spirally wound outside the nozzle 511, and at this time, the first heater 512 can continuously heat in the flowing direction of the water, thereby further improving the conversion degree of the water into steam.

In one embodiment, as shown in fig. 2, an insulating protection layer 513 is provided outside the nozzle 511, and the first heater 512 is provided between the nozzle 511 and the insulating protection layer 513. The insulating protection layer 513 can prevent the first heater 512 from directly contacting with the outside, ensure the normal operation of the first heater 512, and prevent safety accidents.

Optionally, the insulating protection layer 513 has heat insulation performance, so that heat loss is reduced while insulation is performed, local high temperature of equipment is not caused to influence normal operation of other components, and heating effect is guaranteed; or a thermal insulating layer is arranged outside the insulating protective layer 513. Can also reduce heat loss

Optionally, a thermal insulation member may be disposed outside the second vaporizing member 520. The loss of heat at the nozzle 511 transferred to the second vaporizing member 520 can be reduced, and the heating effect of the steam can be ensured.

In one embodiment, as shown in fig. 2, the inner diameter of the nozzle 511 is gradually reduced in a direction close to the second vaporizing member 520, and the end of the nozzle 511 having the smaller inner diameter is protruded into the second vaporizing member 520. At this time, the flow rate of the steam in the nozzle 511 is faster and faster, and the steam can reach a higher speed when being sprayed out of the nozzle 511, and after being reheated by the second vaporizing member 520, the superheated steam still has a higher initial speed and better fluidity, and can fill the inside of the equipment as soon as possible, thereby improving the uniformity of temperature distribution and achieving a better disinfection effect.

In one embodiment, the second vaporization member 520 and the nozzle 511 are made of a ceramic material. The ceramic material has a high thermal conductivity, so that the second vaporizing element 520 can reach a higher temperature, thereby heating the steam to superheated steam.

In one embodiment, as shown in fig. 1, the main pipeline 100 is communicated with the inner cavity 11, and the main pipeline 100 is provided with a conveying member 700 for conveying water towards the switching member 200. The main pipeline 100 can re-convey the water in the inner cavity 11 to the first pipeline 300 or the second pipeline 400, so that the water is recycled, and the waste of the water is reduced.

In other embodiments, the main pipeline 100 may also be communicated with an external water pipe as a structure for supplying water to the inner cavity 11.

In one embodiment, as shown in fig. 1, the disinfection structure further includes a second heater 800, the second heater 800 is disposed on the first pipeline 300, and the second heater 800 is used for heating the water in the first pipeline 300. At this time, the water passing through the first pipe 300 may be heated to improve the washing effect.

In another embodiment, a pressurizing member is provided on the second pipe 400, and the pressurizing member is used for increasing the water pressure in the second pipe 400. The pressure of the water in the second conduit 400 may be increased using a booster, and the flow rate of the water may also be increased.

As shown in FIG. 1, one embodiment discloses a dishwasher, which comprises a housing 10 and a sterilizing structure as described above, wherein an inner cavity 11 is provided in the housing 10.

In the dishwasher, when the switching element 200 connects the main pipeline 100 to the first pipeline 300, the first pipeline 300 can convey water to the inner cavity 11 for rinsing, after rinsing, the switching element 200 switches the main pipeline 100 to be connected with the second pipeline 400, after water enters the second pipeline 400, the water can be heated by the superheated steam component 500 to be superheated steam, the superheated steam is conveyed into the inner cavity 11 for sterilization, because in the dishwasher, the superheated steam component 500 for forming superheated steam is arranged on the second pipeline 400, the main pipeline 100 is switched between the first pipeline 300 and the second pipeline 400 through the switching element 200, and then the switching between rinsing and the superheated steam sterilization can be realized, a water conveying pipeline, a power conveying pipeline or space does not need to be arranged separately, the structure is simpler, the occupied space is smaller, and the miniaturization of the dishwasher is facilitated.

In one embodiment, as shown in fig. 1, a spray arm 12 is disposed in the inner cavity 11, the spray arm 12 is rotatably disposed in the housing 10, a channel is disposed in the spray arm 12, a plurality of nozzles 13 are disposed on the spray arm 12, the nozzles 13 are communicated with the channel, and an end of the first pipeline 300 away from the main pipeline 100 is communicated with the channel. The water delivered by the first pipeline 300 can enter the channel in the spray arm 12 and is sprayed out from the spray nozzle 13 on the spray arm 12 for washing the tableware, the spray arm 12 can rotate, the tableware can be washed at different angles, and the washing is more sufficient.

Optionally, the middle of the spray arm 12 is rotatably connected to the box 10, a plurality of nozzles 13 are respectively disposed at two ends of the spray arm 12, the nozzles 13 located at the two ends of the spray arm 12 face different positions, and the nozzles 13 can push the spray arm 12 to rotate when spraying water.

In one embodiment, as shown in FIG. 1, the end of secondary conduit 400 distal to primary conduit 100 communicates with the channel. At the moment, the superheated steam enters the channel of the spray arm 12 and is sprayed out from the nozzles 13, and the number of the nozzles 13 on the spray arm 12 is multiple, so that the superheated steam can enter from different positions in the inner cavity 11, the superheated steam can fill the whole inner cavity 11 as soon as possible, and the disinfection effect is improved. Meanwhile, the superheated steam can sterilize the channel in the spray arm 12 and the nozzle 13 at high temperature.

Specifically, as shown in fig. 1, the dishwasher includes a duct 14, the duct 14 is communicated with the passage, a first pipe 300 is communicated with the duct 14, and a second pipe 400 is communicated with the duct 14 through a superheated steam assembly 500, in which water or superheated steam is fed into the spray arm 12 as required.

In other embodiments, the second conduit 400 may also be in direct communication with the lumen 11.

In one embodiment, as shown in fig. 1, the dishwasher further includes a dish rack 15, the dish rack 15 is disposed above the spray arm 12, and the spray nozzles 13 are disposed toward the dish rack 15. In this case, the spout 13 can spray water or steam toward the dishes regardless of washing or sterilization, thereby improving the effect.

In one embodiment, as shown in fig. 1, the bottom of the inner cavity 11 is provided with a water collection tank 16, and the main pipeline 100 is communicated with the water collection tank 16. The water collection sump 16 facilitates the collection of water within the internal chamber 11, ensuring that water can enter the main conduit 100 when required.

In one embodiment, as shown in fig. 1, the dishwasher further includes a water inlet pipe 17 and a water outlet pipe 18, and the water inlet pipe 17 and the water outlet pipe 18 are communicated with the water collecting tank 16. The inlet pipe 17 and the outlet pipe 18 can now be used for water inlet or outlet operations of the interior 11.

An embodiment discloses a control method, which is applied to the dishwasher according to any one of the above items, and comprises the following steps:

the switching piece 200 communicates the main pipeline 100 with the first pipeline 300 and sends water into the inner cavity 11;

the switch 200 communicates the primary pipe 100 with the secondary pipe 400, and the superheated steam assembly 500 heats water into superheated steam.

According to the control method, when the switching piece 200 communicates the main pipeline 100 with the first pipeline 300, the first pipeline 300 can convey water to the inner cavity 11 for rinsing, after rinsing is finished, the switching piece 200 switches the main pipeline 100 to be communicated with the second pipeline 400, after water enters the second pipeline 400, the water can be heated into superheated steam by the superheated steam assembly 500, the superheated steam is conveyed into the inner cavity 11 for disinfection, in the dishwasher, the superheated steam assembly 500 for forming superheated steam is arranged on the second pipeline 400, the main pipeline 100 is switched between the first pipeline 300 and the second pipeline 400 through the switching piece 200, and then the rinsing and the superheated steam disinfection can be switched, and a water conveying pipeline, a power conveying pipeline or a space does not need to be arranged independently, the structure is simpler, the occupied space is smaller, and the miniaturization of the dishwasher is facilitated.

Optionally, the switching piece 200 communicates the main pipeline 100 with the first pipeline 300, and specifically includes the following steps:

the water is delivered to the inner cavity 11 through the water inlet pipe 17, the switching piece 200 communicates the main pipeline 100 with the first pipeline 300, the second heater 800 heats the water in the first pipeline 300, and the water in the first pipeline 300 enters the spray arm 12 and is sprayed out from the spray opening 13 for cleaning the tableware;

after the cleaning is finished, carrying out first rinsing, and discharging water after the first rinsing is finished;

carrying out second rinsing;

after the second rinsing is finished, the switching piece 200 communicates the main pipeline 100 with the second pipeline 400, the pressure release valve 610 is opened, the superheated steam assembly 500 starts to heat the second pipeline 400, and the superheated steam enters the spray arm 12 and is sprayed out from the spray opening 13 to sterilize the tableware.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims (20)

1. A disinfection structure is characterized by comprising a main pipeline, a switching piece, a first pipeline and a second pipeline, wherein the first pipeline and the second pipeline are respectively communicated with an inner cavity, the main pipeline is communicated with the first pipeline and the second pipeline through the switching piece, the switching piece is used for enabling the main pipeline to be communicated with the first pipeline or the second pipeline, a superheated steam component is arranged on the second pipeline, and the superheated steam component is used for heating water into superheated steam.

2. A disinfecting structure as recited in claim 1, characterized in that the second conduit comprises a pressurization portion in which the cross-sectional area of the passage decreases progressively in a direction away from the switch.

3. A disinfecting structure as recited in claim 2, further comprising a third line, said third line being in communication with said interior chamber and said second line, respectively, said third line being provided with a pressure relief valve.

4. A disinfecting structure as recited in claim 3, characterized in that the junction of the third line and the second line is disposed between the pressurization section and the superheated steam component.

5. A disinfecting structure as recited in claim 1, characterized in that the superheated steam assembly comprises a first vaporizing member for heating water to generate steam and a second vaporizing member for heating steam to generate superheated steam.

6. A disinfecting structure as recited in claim 5, characterized in that the first vaporizing element comprises a nozzle and a first heater for heating the nozzle, and the second vaporizing element is a conduit which communicates with the nozzle, the conduit being of a thermally conductive material.

7. A disinfecting structure as recited in claim 6, characterized in that the first heater is disposed around the outside of the nozzle.

8. A disinfecting structure as recited in claim 7, characterized in that an insulating protective layer is provided outside the nozzle, and the first heater is disposed between the nozzle and the insulating protective layer.

9. A disinfecting structure as recited in claim 6, characterized in that the internal diameter of the nozzle decreases progressively in the direction of approach to the second vaporizing element, with the smaller internal diameter end of the nozzle projecting into the second vaporizing element.

10. A disinfecting structure as recited in claim 6, characterized in that the second vaporizing element and the nozzle are ceramic materials.

11. A disinfection structure as claimed in any one of claims 1-10, wherein said main conduit is in communication with said inner chamber, said main conduit being provided with a delivery member for delivering water in the direction of said switch member.

12. A disinfecting structure as recited in any one of claims 1-10, characterized in that it further comprises a second heater which is disposed on the first conduit and which is used to heat the water in the first conduit.

13. A disinfecting structure as recited in claim 1, characterized in that a pressure-increasing member is provided on the second conduit for increasing the water pressure in the second conduit.

14. A dishwasher, comprising a housing and a disinfecting structure as claimed in any one of claims 1 to 13, said housing having an internal chamber therein.

15. The dishwasher of claim 14, wherein a spray arm is disposed in the inner chamber, the spray arm is rotatably disposed in the tank, a channel is disposed in the spray arm, a plurality of nozzles are disposed on the spray arm, the nozzles are communicated with the channel, and one end of the first pipeline, which is far away from the main pipeline, is communicated with the channel.

16. The dishwasher of claim 15, wherein an end of the second conduit remote from the main conduit communicates with the channel.

17. The dishwasher of claim 15, further comprising a dish rack disposed above the spray arm, the spray nozzle being disposed in a direction toward the dish rack.

18. The dishwasher of claim 14, wherein a sump is provided at a bottom of the inner chamber, the main conduit being in communication with the sump.

19. The dishwasher of claim 18, further comprising a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe being in communication with the sump.

20. A control method, characterized in that a dishwasher according to any of claims 14-19 is applied, comprising the steps of:

the switching piece is used for communicating the main pipeline with the first pipeline and delivering water into the inner cavity;

the switching piece is used for communicating the main pipeline with the second pipeline, and the superheated steam component is used for heating water into superheated steam.

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