CN112220427B - Disinfection structure and dish washer - Google Patents

Abstract

The invention discloses a sterilization structure and a dish washing machine, wherein the sterilization structure comprises a superheated steam component and a spraying pipe, the superheated steam component is used for generating superheated steam, the superheated steam component comprises an output pipe, the spraying pipe is provided with a steam inlet channel, the spraying pipe comprises a mixing part, the output pipe partially extends into the spraying pipe, the output pipe is used for outputting the superheated steam to the mixing part, and the steam inlet channel is used for conveying gas in a closed space to the mixing part. Above-mentioned disinfection structure, the admission passageway also can mix with superheated steam in the gas transport to the mixing portion in with in the enclosure space, the part reduces superheated steam's temperature, reduce superheated steam through the blowout pipe during spout with the gaseous difference in the enclosure space, prevent because the too big steam condensation that leads to of difference in temperature, influence the sterile thermal efficiency of superheated steam, simultaneously because the gaseous meeting in the enclosure space of entering mixing portion earlier is preheated by superheated steam, the heat of superheated steam cooling in-process loss can not be extravagant.

Description

Disinfection structure and dish washer

Technical Field

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

Background

Traditional tableware disinfection technique is mainly for ozone disinfection or high temperature disinfection, the dish washer is because there are water route and wind path, ozone reveals can appear if using ozone disinfection, and can influence the structure and the life of the inside injection molding of dish washer, and can make the dish washer inner bag difference in temperature big if using high temperature disinfection, lead to local temperature high, inside part can't bear the high temperature, for avoiding above-mentioned problem, existing dish washer adopts superheated steam disinfection technique, superheated steam mobility is good, can improve the temperature field homogeneity, reduce the regional difference in temperature of disinfection, better disinfection effect has, but the present dish washer thermal efficiency who adopts superheated steam disinfection is not high, the condition of extravagant energy easily appears.

Disclosure of Invention

Based on the above, the invention provides a disinfection structure capable of improving disinfection thermal efficiency and a dish washing machine, aiming at overcoming the defect that the existing dish washing machine is low in thermal efficiency during disinfection.

The technical scheme is as follows:

a disinfection structure comprises a superheated steam component and a spraying pipe, wherein the superheated steam component is used for generating superheated steam, the superheated steam component comprises an output pipe, the spraying pipe is provided with a steam inlet channel, the spraying pipe comprises a mixing part, the output pipe partially extends into the spraying pipe, the output pipe is used for outputting the superheated steam to the mixing part, and the steam inlet channel is used for conveying gas in a closed space to the mixing part.

Above-mentioned disinfection structure, utilize superheated steam subassembly to generate superheated steam, and carry superheated steam to the mixing portion in through the blowout pipe, and the admission passageway also can be with the gas transport in the confined space in the mixing portion with superheated steam mixes, can heat the gas in the partial confined space earlier this moment, the while part reduces superheated steam's temperature, reduce superheated steam through the blowout pipe during with the gaseous difference in the confined space, prevent because the too big steam condensation that leads to of difference in temperature, influence the sterile thermal efficiency of superheated steam, simultaneously because the gas that gets into in the confined space of mixing portion earlier can be preheated by superheated steam, the heat of superheated steam cooling in-process loss can not be extravagant, therefore above-mentioned disinfection structure has higher thermal efficiency when utilizing superheated steam to disinfect, can reduce the waste of energy.

In one embodiment, the end of the output pipe close to the mixing part is a matching part, and the aperture of the outlet of the matching part is smaller than the minimum aperture of the mixing part.

In one embodiment, the ejection pipe is sleeved outside the matching part, the ejection pipe is in clearance fit with the matching part, and a clearance between the ejection pipe and the matching part forms the steam inlet channel.

In one embodiment, the ejection pipe further includes a first portion and a second portion, the first portion, the mixing portion and the second portion are sequentially connected along a length direction of the ejection pipe, the first portion is sleeved outside the matching portion, the first portion and the matching portion are in clearance fit to form the steam inlet channel, and a hole diameter of the mixing portion is gradually reduced along a direction away from the matching portion.

In one embodiment, the discharge pipe further includes a third portion provided on a side of the second portion remote from the mixing portion, and a diffusion portion provided between the second portion and the third portion, and the third portion has a larger pore diameter than the second portion.

In one embodiment, the third portion has at least two vents.

In one embodiment, the exhaust port is disposed along a length of the third portion.

In one embodiment, the third portion has a helical structure.

In one embodiment, the third portion is a horizontal spiral structure.

In one embodiment, the third section is a heatable structure.

In one embodiment, the aperture of the mating portion decreases in a direction approaching the mixing portion, and the smallest aperture of the mating portion is smaller than the smallest aperture of the mixing portion.

In one embodiment, the superheated steam component comprises a pipe member, a heating element and a superheated heating element, the pipe member comprises a first pipe part and a second pipe part which are communicated, the fluid in the pipe member flows in the direction from the first pipe part to the second pipe part, the second pipe part is communicated with the output pipe, the heating element is used for heating the first pipe part to enable the fluid in the first pipe part to be heated into steam, and the superheated heating element is used for heating the steam in the second pipe part to enable the steam in the second pipe part to be heated into superheated steam.

In one embodiment, the superheated heating member heats the steam in the second duct portion by electromagnetic induction, so that the steam in the second duct portion is heated to superheated steam.

In one embodiment, the overheating heating element includes an electromagnetic heating coil and an electromagnetic induction element, the electromagnetic heating coil is sleeved outside the electromagnetic induction element, the electromagnetic heating coil heats the electromagnetic induction element through electromagnetic induction, the second pipe portion is made of a non-magnetic material, and the electromagnetic induction element is used for heating the second pipe portion to enable steam in the second pipe portion to be overheated steam.

In one embodiment, the electromagnetic induction member is a metal electrothermal film, and the metal electrothermal film is used for being electrically connected with an external circuit.

In one embodiment, the electromagnetic heating coil is spaced apart from the electromagnetic induction member.

In one embodiment, an insulating layer is arranged between the electromagnetic heating coil and the electromagnetic induction piece.

In one embodiment, the heating element is disposed within the first tube portion.

In one embodiment, the first pipe portion includes a connecting pipe and at least two branch pipes, the branch pipes are arranged side by side at intervals, the connecting pipe is used for communicating two adjacent branch pipes, the heating member includes a heating split body, the heating split body is arranged corresponding to the branch pipes, and the heating split body is arranged in the branch pipes.

A dish washing machine comprises a box body and a disinfection structure, wherein an inner cavity is formed in the box body, an output pipe extends into the inner cavity, a spraying pipe is arranged in the inner cavity, and a steam inlet channel is used for communicating the inner cavity and a mixing part.

Above-mentioned dish washer, utilize superheated steam component to generate superheated steam, and carry superheated steam to the mixing portion in through the blowout pipe, and the admission passageway also can be carried the gas of inner chamber to mix with superheated steam in the mixing portion, can heat the gas of partial inner chamber in this moment earlier, the part reduces superheated steam's temperature simultaneously, reduce superheated steam through the blowout pipe during with the difference in temperature of the gas in the inner chamber, prevent because the too big steam condensation that leads to of difference in temperature, influence the sterile thermal efficiency of superheated steam, simultaneously because the gas that gets into the inner chamber of mixing portion earlier can be preheated by superheated steam, the heat of superheated steam cooling in-process loss can not be extravagant, therefore above-mentioned dish washer has higher thermal efficiency when utilizing superheated steam to disinfect, can reduce the waste of energy.

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 partial cross-sectional view of an assembled outlet pipe and outlet pipe according to an embodiment of the present invention;

FIG. 3 is a schematic view of a partial assembly of the outlet pipe and the outlet pipe according to an embodiment of the present invention;

FIG. 4 is a schematic view of the assembly of the outlet pipe and the outlet pipe according to the embodiment of the present invention;

FIG. 5 is a schematic view of a superheated steam assembly according to an embodiment of the invention;

fig. 6 is a sectional view showing an assembly of a second pipe portion with an overheated heating element according to an embodiment of the present invention.

Description of reference numerals:

100. the superheated steam component comprises a superheated steam component, 110, an output pipe, 111, a matching part, 112, a flow guide part, 120, a pipe fitting, 121, a first pipe part, 121a, a branch pipe, 122, a second pipe part, 123, a temperature sensor, 130, a heating part, 131, a heating split body, 140, a superheated heating part, 141, an electromagnetic heating coil, 142, an electromagnetic induction part, 143, an insulating layer, 200, a discharge pipe, 201, a steam inlet channel, 202, a support part, 210, a mixing part, 220, a first part, 230, a second part, 240, a third part, 241, an exhaust port, 250, a diffusion part, 300, a box body, 301, an inner cavity, 310, a spray arm, 320 and a filter.

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 to 3, an embodiment discloses a sterilization structure, which includes a superheated steam component 100 and a spraying pipe 200, the superheated steam component 100 is used for generating superheated steam, the superheated steam component 100 includes an output pipe 110, the spraying pipe 200 is provided with a steam inlet channel 201, the spraying pipe 200 includes a mixing part 210, the output pipe 110 partially extends into the spraying pipe 200, the output pipe 110 is used for outputting superheated steam into the mixing part 210, and the steam inlet channel 201 is used for delivering gas in a closed space into the mixing part 210.

The above-mentioned sterilizing structure generates the superheated steam by the superheated steam assembly 100, and delivers the superheated steam into the mixing part 210 through the spouting pipe 200, the steam inlet channel 201 can also convey the gas in the closed space into the mixing part 210 to be mixed with the superheated steam, at this time, the gas in a part of the closed space can be heated first, meanwhile, the temperature of the superheated steam is partially reduced, the temperature difference between the superheated steam sprayed out through the spraying pipe 200 and the gas in the closed space is reduced, the steam condensation caused by overlarge temperature difference is prevented, the heat efficiency of the superheated steam sterilization is prevented from being influenced, meanwhile, as the gas firstly entering the closed space of the mixing part 210 is preheated by the superheated steam, the heat lost in the process of cooling the superheated steam is not wasted, therefore, the sterilizing structure has higher thermal efficiency when the sterilizing structure is used for sterilizing by using the superheated steam, and the waste of energy can be reduced.

The disinfection structure can be arranged in a closed space, tableware can be placed in the space, and the mixed superheated steam enters the closed space and can be used for disinfecting the tableware and the like.

In addition, compare in superheated steam directly discharge and mix with the outside air again, because the gas that gets into in the enclosure space of mixing portion 210 by admission passageway 201 can not be too much, consequently has certain cooling effect to superheated steam, still enables steam and is in high temperature state simultaneously to can play the disinfection effect.

Specifically, after the mixing part 210 is actually one section of the spraying pipe 200, the output pipe 110 and the steam inlet channel 201 deliver the fluid to the mixing part 210, the gas and the superheated steam in the enclosed space can be mixed in the mixing part 210 and then sprayed.

In one embodiment, as shown in fig. 2 and 3, the end of the output pipe 110 near the mixing portion 210 is a fitting portion 111, and the aperture of the outlet of the fitting portion 111 is smaller than the smallest aperture of the mixing portion 210. At this time, when the outlet of the matching part 111 sprays the superheated steam, the superheated steam can enter the spraying pipe 200 through the mixing part 210, and since the aperture of the outlet of the matching part 111 is smaller than the minimum aperture of the mixing part 210, the flow of the superheated steam in the spraying pipe 200 forms a negative pressure region in the mixing part 210, so that the steam inlet channel 201 can convey the gas in the closed space into the mixing part 210 under the action of the negative pressure and mix with the superheated steam.

In another embodiment, the disinfection structure further comprises a blower, the mixing part 210 is an end part of the spraying pipe 200, the spraying pipe 200 is communicated with the mixing part 210, the spraying pipe 200 is provided with a branch pipe enclosing the steam inlet channel 201, and the blower is arranged in the branch pipe and used for conveying the gas in the closed space to the mixing part 210. The gas in the enclosed space may be actively transported to the mixing section 210 by a blower.

In one embodiment, as shown in fig. 2 and 3, the ejection pipe 200 is sleeved outside the matching portion 111, the ejection pipe 200 is in clearance fit with the matching portion 111, and a steam inlet channel 201 is formed in a clearance between the ejection pipe 200 and the matching portion 111. At this time, the negative pressure region formed in the mixing part 210 can suck the gas in the closed space through the gap between the discharge pipe 200 and the fitting part 111 and mix the gas with the superheated steam, so that the gas in the closed space can be spontaneously transported, the transportation of the superheated steam is not affected, and the superheated steam is not easily leaked.

Optionally, a support 202 is provided between the spouting pipe 200 and the fitting portion 111 for fixing the relative position of the spouting pipe 200 and the fitting portion 111.

In other embodiments, the spouting pipe 200 is partially clearance-fitted with the fitting portion 111 to form the steam inlet passage 201.

In one embodiment, as shown in fig. 2 and 3, the ejection pipe 200 further includes a first portion 220 and a second portion 230, the first portion 220, the mixing portion 210 and the second portion 230 are sequentially connected along the length direction of the ejection pipe 200, the first portion 220 is sleeved outside the matching portion 111, the first portion 220 and the matching portion 111 are in clearance fit to form the steam inlet channel 201, and the aperture of the mixing portion 210 is gradually reduced along the direction away from the matching portion 111. After the outside air is sucked into the hole section where the mixing part 210 is located, the aperture of the mixing part 210 is gradually reduced along the direction far away from the matching part 111, so that the flow speed of the outside air in the moving process is accelerated, the outside air can be better mixed with superheated steam, the flow speed of the mixed gas is improved, the mixed gas has higher initial speed when being sprayed, the spraying distance is farther, and the temperature in the space can be quickly improved.

Optionally, the fitting portion 111 does not extend into the mixing portion 210 or the fitting portion 111 partially extends into the mixing portion 210, so that the superheated steam can be mixed with the gas in the enclosed space at the mixing portion 210.

In one embodiment, as shown in fig. 3 and 4, the discharge pipe 200 further includes a third portion 240 and a diffusion portion 250, the third portion 240 is disposed on a side of the second portion 230 away from the mixing portion 210, the diffusion portion 250 is disposed between the second portion 230 and the third portion 240, and the third portion 240 has a larger pore diameter than the second portion 230. After the superheated steam and the gas in the enclosed space are mixed and pressurized in the mixing portion 210, the superheated steam and the gas in the enclosed space can be further sufficiently mixed in the process of entering the third portion 240 from the diffusion portion 250 due to the increase of the pore diameter, the decrease of the gas pressure, and the decrease of the flow rate.

In one embodiment, as shown in fig. 4, at least two air outlets 241 are disposed on the third portion 240. At the moment, the exhaust volume can be increased, the spraying range of the mixed superheated steam is expanded, the mixed superheated steam can fill the space as soon as possible, the temperature in the space is rapidly increased, the temperature difference of different areas in the space is reduced, and the disinfection effect is further improved.

Alternatively, the side of the ejection pipe 200 located at the first portion 220 may have an opening for the output pipe 110 to extend into, and the side of the ejection pipe 200 located at the third portion 240 may have a closed structure, so that the mixed superheated steam can be discharged only from the exhaust port 241, and since the exhaust port 241 may be disposed upward or downward when the exhaust port 241 is disposed at the side of the ejection pipe 200, the space may be filled with the mixed superheated steam as soon as possible.

In one embodiment, as shown in fig. 4, the exhaust port 241 is disposed along the length of the third portion 240. In this case, the superheated steam after mixing can cover a wider range when being ejected.

In one embodiment, as shown in fig. 4, the third portion 240 has a spiral structure. In this case, the space occupied by the third portion 240 is small, and the length of the third portion 240 is long, so that a large number of exhaust ports 241 can be provided, and the mixed superheated steam can more quickly enter the space, and the exhaust directions of the exhaust ports 241 are different, so that the space can be filled with the mixed superheated steam as soon as possible.

In one embodiment, as shown in FIG. 4, the third portion 240 is a horizontal spiral structure. The third portion 240 can be disposed close to the inner wall of the space, and the placement of the objects in the space is not affected.

In other embodiments, the third portion 240 may have other spiral structures, such as a conical spiral structure.

In one embodiment, the third portion 240 is a heatable structure. Third portion 240 can be used to heat the air in the space this moment, prevents that the drop of water that the steam supersaturation caused from appearing, or carries out further heating to the superheated steam after mixing, reduces the superheated steam temperature drop, guarantees the disinfection temperature.

In addition, the superheated steam assembly 100 works in stages to prevent excessive water from being separated out due to the accumulation of steam in the space, and during the period, if no heat source exists in the space, the overall temperature in the space is reduced, and at the moment, the heat source is supplemented in the space through the self-heating of the third part 240, so that the constant sterilization temperature is ensured.

Alternatively, the spouting pipe 200 is a stainless steel metal material, and heating can be performed by providing the heating member 130 or using electric heating.

In one embodiment, as shown in fig. 2 and 3, the aperture of the fitting portion 111 is gradually reduced in a direction approaching the mixing portion 210, and the minimum aperture of the fitting portion 111 is smaller than the minimum aperture of the mixing portion 210. At this time, the superheated steam is pressurized and accelerated before being delivered to the mixing part 210, so that the flow rate of the superheated steam is increased, the superheated steam can still keep a high speed after being mixed, and the superheated steam is sprayed out of the spraying pipe 200 as soon as possible, thereby reducing the temperature drop, increasing the spraying speed of the mixed superheated steam, and improving the sterilization effect.

Optionally, as shown in fig. 2 and fig. 3, the output pipe 110 further includes a flow guiding portion 112, the flow guiding portion 112 is disposed on one side of the matching portion 111 close to the mixing portion 210, and the aperture of the flow guiding portion 112 is not changed, so as to guide the pressurized and accelerated superheated steam into the mixing portion 210.

In one embodiment, as shown in fig. 5, the superheated steam assembly 100 includes a pipe member 120, a heating element 130 and a superheated heating element 140, the pipe member 120 includes a first pipe portion 121 and a second pipe portion 122 which are communicated with each other, a fluid in the pipe member 120 flows in a direction from the first pipe portion 121 to the second pipe portion 122, the second pipe portion 122 is communicated with the output pipe 110, the heating element 130 is used for heating the first pipe portion 121 so that the fluid in the first pipe portion 121 is heated into steam, and the superheated heating element 140 is used for heating the steam in the second pipe portion 122 so that the steam in the second pipe portion 122 is heated into superheated steam. After the fluid enters the pipe 120, the heating element 130 heats the fluid flowing through the first pipe 121 to make the fluid heated into steam, and then the steam flows to the second pipe 122, and the superheated heating element 140 heats the steam in the second pipe 122 for the second time, so that the steam can be further heated into superheated steam, and the superheated steam can be used for sterilizing tableware and the like.

Alternatively, the heating temperature of the superheating heating member 140 is higher than the heating temperature of the heating member 130. Ensuring that the fluid can be further heated into superheated steam after being evaporated into steam.

In one embodiment, the superheating heating member 140 heats the steam in the second pipe portion 122 by electromagnetic induction, so that the steam in the second pipe portion 122 is heated to be superheated steam. Further heating is carried out to steam through electromagnetic induction's mode, and rate of heating is fast, and the thermal efficiency is high, and can make superheated steam reach higher temperature, has better disinfection effect.

In one embodiment, as shown in fig. 5 and 6, the overheating heating element 140 includes an electromagnetic heating coil 141 and an electromagnetic induction element 142, the electromagnetic heating coil 141 is sleeved outside the electromagnetic induction element 142, the electromagnetic heating coil 141 heats the electromagnetic induction element 142 through electromagnetic induction, the second pipe portion 122 is made of a non-magnetic material, and the electromagnetic induction element 142 is used for heating the second pipe portion 122 so as to heat the steam in the second pipe portion 122 into the overheated steam. At this time, the electromagnetic heating coil 141 can heat the electromagnetic induction piece 142 through electromagnetic induction heating, and heat the second pipe part 122, so that the steam in the second pipe part 122 is further heated to superheated steam, because the heating speed of the electromagnetic induction heating mode is high, the temperature that can be reached is high, the steam can be heated to superheated steam with higher temperature, a better disinfection effect is achieved, meanwhile, the second pipe part 122 is made of a non-magnetic material, the electromagnetic heating coil 141 cannot directly heat the second pipe part 122, the normal work of other parts connected with the second pipe part 122 due to the influence of overhigh temperature of the second pipe part 122 can be prevented, and the safety accident caused by overhigh temperature of the second pipe part 122 can also be prevented.

In other embodiments, the superheating heating member 140 includes an electromagnetic heating coil 141, part or all of the second pipe portion 122 is made of a magnetic induction material, the electromagnetic heating coil 141 can directly heat the second pipe portion 122, and the second pipe portion 122 transfers heat to steam in the second pipe portion 122, or the steam can be heated to superheated steam.

Optionally, as shown in fig. 6, the electromagnetic induction element 142 is sleeved outside the second pipe portion 122. Because the electromagnetic induction piece 142 is located outside the second pipe portion 122, can carry out comprehensive heating to the circumference of second pipe portion 122, make the steam in the second pipe portion 122 can be heated fully, make that steam can be better be heated for superheated steam.

Specifically, the electromagnetic induction member 142 has a cylindrical structure, and the heating distance to the steam is long, so that the steam is heated more sufficiently.

In other embodiments, the electromagnetic inductor 142 may also be a cylindrical structure with a notch; or the electromagnetic induction member 142 may be disposed within the second tube portion 122. The temperature can also be increased by the electromagnetic heating coil 141 and used to heat steam to generate superheated steam.

In one embodiment, the electromagnetic induction element 142 is a metal electrothermal film, and the metal electrothermal film is used for electrically connecting with an external circuit. According to electric current magnetic effect, when the electric current that has certain frequency in the electromagnetic heating coil 141 around the metal electric heat membrane, can be at the inside electromotive force that produces of metal, along with accumulation electromotive force will form the vortex, realize the conversion of electric energy to the heat energy, the metal electric heat membrane can be heated by electromagnetic heating coil 141, the metal electric heat membrane can generate heat under the circumstances of circular telegram simultaneously, then the heating through electromagnetic heating coil 141 and the dual heating of metal electric heat membrane self intensification, two kinds of heating methods can realize complementation and heat stack, heating temperature to steam is higher, and can heat steam faster, make the superheated steam of final formation have higher temperature, can play better disinfection effect. In addition, because electromagnetic heating coil 141 and metal electric heat membrane all can control heating temperature through control current, consequently the temperature that can the final steam of more accurate control goes on heating to form stable superheated steam and continuously be used for disinfecting, can improve sterile effect.

In other embodiments, the electromagnetic induction element 142 may be made of other magnetic materials, such as stainless steel.

In one embodiment, as shown in fig. 6, the electromagnetic heating coil 141 is spaced apart from the electromagnetic induction member 142. In this case, a short circuit between the electromagnetic heating coil 141 and the electromagnetic induction member 142 can be prevented, thereby preventing a safety accident and improving safety and reliability of the apparatus.

In one embodiment, as shown in fig. 6, an insulating layer 143 is disposed between the electromagnetic heating coil 141 and the electromagnetic induction member 142. The insulating layer 143 can ensure that no short circuit occurs between the electromagnetic heating coil 141 and the electromagnetic induction member 142, and the insulating layer 143 can fix the relative position between the electromagnetic heating coil 141 and the electromagnetic induction member 142, so that the heating effect of the electromagnetic heating coil 141 on the electromagnetic induction member 142 is more stable.

Optionally, the second tube portion 122 is a glass-ceramic tube. The glass ceramic tube has stable properties, can resist high temperature, has good thermal conductivity, and cannot be heated by the electromagnetic heating coil 141, so that the second tube part 122 can heat steam without causing safety accidents.

In one embodiment, as shown in FIG. 5, the heating member 130 is disposed within the first pipe portion 121. At this time, the heating member 130 can directly heat the fluid in the first pipe part 121, so that the fluid can be sufficiently heated to form steam.

In one embodiment, as shown in fig. 5, the first pipe portion 121 includes at least two connecting pipes and branch pipes 121a, the branch pipes 121a are arranged side by side at intervals, the connecting pipes are used for connecting two adjacent branch pipes 121a, the heating member 130 includes a heating sub-body 131, the heating sub-body 131 is arranged corresponding to the branch pipes 121a, and the heating sub-body 131 is arranged in the branch pipes 121 a. Through the above-mentioned setting of first pipe portion 121, increased the distance that the fluid flowed through first pipe portion 121, all be equipped with heating components of a whole that can function independently 131 in each minute pipe 121a simultaneously, the heating of fluid is more abundant, and it is all in the steam state when making the fluid get into second pipe portion 122 by first pipe portion 121, and the second pipe portion 122 of being convenient for further heats steam for the superheated steam that the temperature is higher for improve disinfection effect.

Alternatively, as shown in fig. 5, the number of the branch pipes 121a is three, the three branch pipes 121a are respectively a first branch pipe 121a, a second branch pipe 121a and a third branch pipe 121a, the second branch pipe 121a is disposed between the first branch pipe 121a and the third branch pipe 121a, the number of the connection pipes is two, the two connection pipes are respectively connected to two ends of the second branch pipe 121a, so that the first pipe 121 forms an S-shaped pipeline, and the number of the heating sub-bodies 131 is three, so that the heating member 130 forms an E-shaped structure. Through the arrangement, the fluid is heated for a long distance when flowing through the first pipe part 121 and can be sufficiently heated by the heating element 130, so that the heat loss of the steam heated to superheated steam by the second pipe part 122 can be reduced, the utilization rate of heat energy is improved, and meanwhile, the space occupied by the structures of the first pipe part 121 and the heating element 130 is small, and the miniaturization of equipment is facilitated.

Alternatively, the shape of the heating member 130 may also match the shape of the first pipe part 121, i.e. the heating member 130 may also be of an S-shaped configuration.

In other embodiments, first tube portion 121 may also be U-shaped, V-shaped, M-shaped, etc.

Alternatively, as shown in fig. 5, a temperature sensor 123 is provided in one end of the first pipe portion 121 near the second pipe portion 122. The temperature sensor 123 can be used to know the temperature of the fluid in the first pipe part 121 before entering the second pipe part 122, determine whether the fluid entering the second pipe part 122 is steam, and conveniently adjust the heating of the heating element 130 according to the data measured by the temperature sensor 123.

Optionally, a temperature sensor 123 may be provided to monitor and adjust the heating temperature of the electromagnetic induction member 142, so that the electromagnetic induction member 142 can maintain a stable temperature for heating.

As shown in fig. 1 and 2, an embodiment discloses a dishwasher, which includes a housing 300 and a sterilizing structure as described above, wherein an inner cavity 301 is formed in the housing 300, an output pipe 110 extends into the inner cavity 301, an ejection pipe 200 is disposed in the inner cavity 301, and a steam inlet channel 201 is used for communicating the inner cavity 301 and a mixing portion 210.

The dishwasher generates superheated steam by using the superheated steam component 100, and conveys the superheated steam to the mixing part 210 through the spraying pipe 200, the steam inlet channel 201 can convey the gas in the inner cavity 301 to the mixing part 210 to be mixed with the superheated steam, at this time, the gas in the inner cavity 301 can be heated firstly, meanwhile, the temperature of the superheated steam is partially reduced, the temperature difference between the superheated steam and the gas in the inner cavity 301 when the superheated steam is sprayed out through the spraying pipe 200 is reduced, the steam condensation caused by overlarge temperature difference is prevented, the thermal efficiency of superheated steam sterilization is prevented from being influenced, meanwhile, the gas which enters the inner cavity 301 of the mixing part 210 firstly can be preheated by the superheated steam, and the heat lost in the process of cooling the superheated steam cannot be wasted, so the dishwasher has higher thermal efficiency when the superheated steam is used for sterilization, and the waste of energy can be reduced.

The inner cavity 301 is the aforementioned "closed space".

Because the dishwasher can have the function of hot rinsing before the disinfection, certain amount of steam can be generated in the inner cavity 301 by the hot rinsing, when the disinfection is carried out, the original steam in the inner cavity 301 can enter the mixing part 210 through the steam inlet channel 201 to be mixed with the superheated steam, the residual heat in the inner cavity 301 can be better utilized, and the heat efficiency is improved.

Optionally, a spray arm 310 for spraying is provided in the inner cavity 301. May be used to clean dishware disposed within the cavity 301.

Optionally, a filter 320 for filtering debris is disposed within the inner cavity 301. The residue can be prevented from blocking the water flow passage.

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 (17)

1. A disinfection structure is characterized by comprising a superheated steam component and an ejection pipe, wherein the superheated steam component is used for generating superheated steam, the superheated steam component comprises an output pipe, the ejection pipe is provided with a steam inlet channel, the ejection pipe comprises a mixing part, the output pipe partially extends into the ejection pipe and is used for outputting the superheated steam to the mixing part, the steam inlet channel is used for conveying gas in a closed space to the mixing part, the end part of the output pipe, close to the mixing part, is a matching part, the ejection pipe is sleeved outside the matching part, the ejection pipe is in clearance fit with the matching part, a clearance between the ejection pipe and the matching part forms the steam inlet channel, the aperture of an outlet of the matching part is smaller than the minimum aperture of the mixing part, and the aperture of the matching part is gradually reduced along the direction close to the mixing part, the minimum aperture of the mating portion is smaller than the minimum aperture of the mixing portion.

2. A disinfecting structure as recited in claim 1, characterized in that the spray tube further comprises a first portion and a second portion, the first portion, the mixing portion and the second portion are sequentially connected along the length direction of the spray tube, the first portion is sleeved outside the engaging portion, the first portion and the engaging portion are in clearance fit to form the steam inlet channel, and the aperture of the mixing portion gradually decreases along the direction away from the engaging portion.

3. A disinfecting structure as recited in claim 2, characterized in that the squirt pipe further comprises a third portion disposed on the side of the second portion remote from the mixing portion, and a diffusing portion disposed between the second portion and the third portion, the third portion having a larger pore size than the second portion.

4. A disinfecting structure as recited in claim 3, characterized in that at least two air vents are provided in the third portion.

5. A disinfecting structure as recited in claim 4, characterized in that the vent opening is disposed along the length of the third portion.

6. A disinfecting structure as recited in claim 3, characterized in that the third portion is a helical structure.

7. A disinfecting structure as recited in claim 6, characterized in that the third portion is a horizontal spiral structure.

8. A disinfecting structure as recited in claim 3, characterized in that the third portion is a heatable structure.

9. A fumigation arrangement as defined in any one of claims 1 to 8, in which said superheated steam component comprises a tubular member including a first and a second communicating duct portion through which fluid flows in a direction from said first duct portion to said second duct portion, and a heating element in communication with said outlet duct, said heating element being adapted to heat said first duct portion so that fluid in said first duct portion is heated to steam, and said superheated heating element being adapted to heat steam in said second duct portion so that steam in said second duct portion is heated to superheated steam.

10. A disinfecting structure as recited in claim 9, characterized in that the superheated heating element heats the steam in the second pipe portion by electromagnetic induction, so that the steam in the second pipe portion is heated to superheated steam.

11. A sterilization structure according to claim 10, wherein said overheating heating member includes an electromagnetic heating coil and an electromagnetic induction member, said electromagnetic heating coil is disposed outside said electromagnetic induction member, said electromagnetic heating coil heats said electromagnetic induction member by electromagnetic induction, said second pipe portion is made of a non-magnetic material, and said electromagnetic induction member is configured to heat said second pipe portion so that steam in said second pipe portion is heated to superheated steam.

12. A disinfecting structure as recited in claim 11, characterized in that the electromagnetic induction element is a metallic electrothermal film for electrical connection with an external circuit.

13. A disinfecting structure as recited in claim 11, characterized in that the electromagnetic heating coil is disposed in spaced relation to the electromagnetic induction member.

14. A disinfecting structure as recited in claim 11, characterized in that an insulating layer is provided between the electromagnetic heating coil and the electromagnetic induction member.

15. A disinfecting structure as recited in claim 9, characterized in that the heating element is disposed in the first tube portion.

16. A disinfecting structure as recited in claim 15, characterized in that the first tube section comprises at least two connecting tubes and branch tubes, the branch tubes are arranged side by side at intervals, the connecting tubes are used for communicating two adjacent branch tubes, the heating element comprises heating sub-bodies, the heating sub-bodies are arranged corresponding to the branch tubes, and the heating sub-bodies are arranged in the branch tubes.

17. A dishwasher comprising a housing and a sanitizing structure as claimed in any one of claims 1 to 16, said housing having an internal chamber, said outlet conduit extending into said internal chamber, said outlet conduit being located within said internal chamber, said inlet passage being adapted to communicate between said internal chamber and said mixing section.

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