CN112914466B - Cleaning and disinfecting structure, dish washing machine and cleaning and disinfecting method - Google Patents

Abstract

The invention discloses a cleaning and disinfecting structure, a dish washing machine and a cleaning and disinfecting method. Due to the existence of the switching piece, the hot water channel and the steam channel, the high-temperature steam can be introduced without draining before hot water cleaning is finished, the temperature in the washing cavity is prevented from being obviously reduced in the draining period, the temperature in the washing cavity is kept, the temperature difference between the high-temperature steam and the washing cavity is reduced, the high-temperature steam is prevented from entering the washing cavity, and the subsequent high-temperature steam sterilization effect can be improved due to the fact that condensation occurs in the temperature difference.

Description

Cleaning and disinfecting structure, dish washing machine and cleaning and disinfecting method

Technical Field

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

Background

The dishwasher is usually sterilized after being washed, and the cleanness of tableware is ensured. The common disinfection technology is medium-high temperature disinfection (70-80 ℃), the disinfection mode has poor effect, and the high-temperature steam sterilization capability is stronger. The dish washer generally disinfects by high-temperature steam after being cleaned, and when the temperature of water is lower than that of the high-temperature steam in the cleaning process, the high-temperature steam can be condensed due to overlarge temperature difference when entering a cleaned cavity, so that the disinfection effect of the high-temperature steam is influenced.

Disclosure of Invention

Based on the structure, the dish washer and the cleaning and disinfecting method, which are disclosed by the invention, have the advantages that the problem that the disinfection effect is influenced by condensation during high-temperature steam disinfection of the existing dish washer is solved, and the cleaning and disinfecting structure, the dish washer and the cleaning and disinfecting method with better disinfection effect are provided.

The technical scheme is as follows:

a cleaning and disinfecting structure comprises an input pipeline, a switching piece and a spray arm, wherein the input pipeline is used for outputting hot water or high-temperature steam, the spray arm is used for being arranged in a washing cavity of a box body and communicated with the input pipeline, a hot water channel and a steam channel are arranged in the spray arm, and when the temperature in the hot water channel is increased to be more than or equal to a preset temperature, the switching piece enables the input pipeline to be communicated with the hot water channel and communicated with the steam channel.

The cleaning and disinfecting structure can utilize the input pipeline to convey hot water to the spray arm in the cleaning stage, the hot water has lower temperature, can enter the hot water channel and spray the hot water into the washing cavity, then the input pipeline conveys high-temperature steam to the spray arm, the hot water can be reserved in the hot water channel and the input pipeline, the high-temperature steam can push the hot water in the input pipeline and the hot water channel at the beginning, the hot water reserved in the input pipeline and the hot water channel can be emptied, the high-temperature steam can heat the hot water, the temperature in the washing cavity can be increased, the temperature difference between the high-temperature steam and the washing cavity during subsequent introduction can be reduced, the high-temperature steam enters the hot water channel along with the discharge of the reserved hot water, the temperature in the hot water channel is increased until the temperature in the hot water channel is higher than or equal to the preset temperature, the switching piece switches the input pipeline to be communicated with the steam channel, and sprays the high-temperature steam into the washing cavity for disinfection, because the existence of switching piece and hot water passageway, steam channel, can realize that hot water washs and begin to let in high-temperature steam before finishing not draining yet, avoid the temperature in the washing chamber to obviously descend at this time of drainage, keep the temperature in the washing chamber, reduce the difference in temperature in high-temperature steam and the washing chamber, prevent that high-temperature steam from getting into the washing chamber because the condition of condensation appears in the difference in temperature, consequently, can improve follow-up high-temperature steam disinfection's effect, in addition, spray arm and input pipeline intercommunication, and utilize the switching piece to realize the switching of different passageways, the quantity of reducible pipeline, simplify the pipe arrangement.

In one embodiment, the spray arm is provided with a plurality of first nozzles communicated with the hot water channel and a plurality of second nozzles communicated with the steam channel, and the aperture of each second nozzle is smaller than that of each first nozzle.

In one embodiment, the number of the second nozzle orifices is greater than the number of the first nozzle orifices.

In one embodiment, the number of the spray arms is at least two, wherein the two spray arms are respectively a first spray arm and a second spray arm, the first spray arm and the second spray arm are arranged at intervals, the second spray arm is arranged above the first spray arm, and the number of the second nozzles on the second spray arm is smaller than that of the second nozzles on the first spray arm.

In one embodiment, the above cleaning and disinfecting structure further comprises an auxiliary heating member for heating the air in the washing chamber.

In one embodiment, the above cleaning and disinfecting structure further includes a temperature control switch, the temperature control switch is disposed at an end of the hot water channel, when the temperature sensed by the temperature control switch is lower than the preset temperature, the switching member connects the input pipeline to the hot water channel, and when the temperature sensed by the temperature control switch is increased to be greater than or equal to the preset temperature, the switching member connects the input pipeline to the steam channel.

In one embodiment, the cleaning and disinfecting structure further includes a water supply pipeline, a hot water assembly and a high temperature steam assembly, the hot water assembly and the high temperature steam assembly are respectively communicated with the input pipeline, and the hot water assembly and the high temperature steam assembly are respectively communicated with the water supply pipeline.

In one embodiment, the cleaning and disinfecting structure further comprises a water softener disposed on the water supply pipeline for softening the fluid in the water supply pipeline.

In one embodiment, the hot water assembly includes a heater and a hot water pipeline, the high-temperature steam assembly includes a steam pipeline and a steam generator disposed on the steam pipeline, one end of the hot water pipeline and one end of the steam pipeline are respectively communicated with the water supply pipeline, the other end of the hot water pipeline and the other end of the steam pipeline are respectively communicated with the input pipeline, a first switch is disposed on the hot water pipeline, a second switch is disposed on the steam pipeline, and the heater is used for heating fluid in the water supply pipeline.

In one embodiment, the hot water pipeline and the steam pipeline are respectively communicated with one end part of the water supply pipeline, and the heater is arranged at the joint of the water supply pipeline and the hot water pipeline and the steam pipeline.

In one embodiment, the high temperature steam assembly further comprises a superheating heater arranged on the steam pipeline, and the superheating heater is arranged on one side of the steam generator far away from the water supply pipeline.

In one embodiment, the cleaning and disinfecting structure further comprises a drying assembly, the drying assembly comprises a drying heating element and an air inlet fan, and the air inlet fan is used for sending air heated by the drying heating element into the washing cavity.

In one embodiment, the preset temperature is the temperature of the superheated steam.

A dish washing machine comprises a box body and a cleaning and disinfecting structure, wherein a washing cavity is arranged in the box body, and a spray arm is arranged in the washing cavity.

The dishwasher can utilize the input pipeline to convey hot water to the spray arm, the temperature of the hot water is low, the hot water can enter the hot water channel and spray the hot water into the washing cavity for cleaning, then the input pipeline conveys high-temperature steam to the spray arm, the hot water can be reserved in the hot water channel and the input pipeline, the high-temperature steam can push the hot water in the input pipeline and the hot water channel at first to play a role of emptying the reserved hot water in the input pipeline and the hot water channel, the high-temperature steam can heat the hot water, the temperature in the washing cavity can be increased, the temperature difference between the high-temperature steam and the washing cavity during subsequent introduction is reduced, the high-temperature steam enters the hot water channel along with the discharge of the reserved hot water, the temperature in the hot water channel rises until the temperature in the hot water channel is higher than or equal to the preset temperature, the switching piece switches the input pipeline to be communicated with the steam channel, and sprays the high-temperature steam into the washing cavity for disinfection, because the existence of switching piece and hot water passageway, steam channel, can realize that hot water washs and begin to let in high-temperature steam before finishing not draining yet, avoid the temperature in the washing chamber to obviously descend at this time of drainage, keep the temperature in the washing chamber, reduce the difference in temperature in high-temperature steam and the washing chamber, prevent that high-temperature steam from getting into the washing chamber because the condition of condensation appears in the difference in temperature, consequently, can improve follow-up high-temperature steam disinfection's effect, in addition, spray arm and input pipeline intercommunication, and utilize the switching piece to realize the switching of different passageways, the quantity of reducible pipeline, simplify the pipe arrangement.

A cleaning and disinfecting method comprises the following steps:

the input pipeline outputs hot water to a hot water channel of the spray arm and sprays the hot water into the washing cavity;

the input pipeline outputs high-temperature steam to the hot water channel;

when the temperature in the hot water channel is increased to be higher than or equal to the preset temperature, the switching piece enables the input pipeline to be communicated with the steam channel of the spray arm, and high-temperature steam is sprayed out to the washing cavity.

The cleaning and disinfecting method can utilize the input pipeline to convey hot water to the spray arm, the hot water has lower temperature and can enter the hot water channel and spray the hot water into the washing cavity for cleaning, then the input pipeline conveys high-temperature steam to the spray arm, because the hot water can be reserved in the hot water channel and the input pipeline, the high-temperature steam can push the hot water in the input pipeline and the hot water channel at the beginning to play a role of emptying the hot water reserved in the input pipeline and the hot water channel, the high-temperature steam can heat the hot water, the temperature in the washing cavity can be increased, the temperature difference between the high-temperature steam and the washing cavity during subsequent introduction is reduced, the high-temperature steam enters the hot water channel along with the discharge of the reserved hot water, the temperature in the hot water channel is increased until the temperature in the hot water channel is higher than or equal to the preset temperature, the switching piece switches the input pipeline to be communicated with the steam channel, and sprays the high-temperature steam into the washing cavity for disinfection, because the existence of switching piece and hot water passageway, steam channel, can realize that hot water washs and begin to let in high-temperature steam before finishing not draining yet, avoid the temperature in the washing chamber to obviously descend at this time of drainage, keep the temperature in the washing chamber, reduce the difference in temperature in high-temperature steam and the washing chamber, prevent that high-temperature steam from getting into the washing chamber because the condition of condensation appears in the difference in temperature, consequently, can improve follow-up high-temperature steam disinfection's effect, in addition, spray arm and input pipeline intercommunication, and utilize the switching piece to realize the switching of different passageways, the quantity of reducible pipeline, simplify the pipe arrangement.

In one embodiment, after the input pipeline outputs the high-temperature steam to the hot water channel, the method further comprises the following steps:

drainage is started.

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 flow chart of a cleaning and disinfecting method according to an embodiment of the invention.

Description of reference numerals:

100. the steam-water heater comprises an input pipeline, 200, a spray arm, 200a, a first spray arm, 200b, a second spray arm, 201, a steam channel, 202, a first nozzle, 203, a second nozzle, 300, an auxiliary heating element, 400, a temperature control switch, 510, a water supply pipeline, 520, a hot water component, 521, a heater, 522, a hot water pipeline, 523, a first switch, 530, a high-temperature steam component, 531, a steam pipeline, 532, a steam generator, 533, a second switch, 534, an overheating heater, 540, a water softener, 600, a drying component, 610, a drying heating element, 620, an air inlet fan, 710, an exhaust fan, 10, a box body, 11, a washing cavity, 12, a water drainage tank, 20 and a pump body.

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 cleaning and disinfecting structure, which includes an input pipe 100, a switching member and a spray arm 200, wherein the input pipe 100 is used for outputting hot water or high-temperature steam, the spray arm 200 is arranged in a washing chamber 11 of a cabinet 10, the spray arm 200 is communicated with the input pipe 100, a hot water channel and a steam channel 201 are arranged in the spray arm 200, and when the temperature in the hot water channel is increased to be greater than or equal to a preset temperature, the switching member switches the input pipe 100 from being communicated with the hot water channel to being communicated with the steam channel 201.

In the above cleaning and disinfecting structure, the input pipeline 100 can be used to convey hot water to the spray arm 200 in the cleaning stage, the hot water has a lower temperature and can enter the hot water channel and spray the hot water into the washing chamber 11, then the input pipeline 100 conveys high-temperature steam to the spray arm 200, because the hot water channel and the input pipeline 100 can retain the hot water, the high-temperature steam can push the hot water in the input pipeline 100 and the hot water channel at first to play a role of emptying the retained hot water in the input pipeline 100 and the hot water channel, the high-temperature steam and the hot water can improve the temperature in the washing chamber 11, reduce the temperature difference between the high-temperature steam and the washing chamber 11 when the high-temperature steam is subsequently introduced, the high-temperature steam enters the hot water channel along with the discharge of the retained hot water, the temperature in the hot water channel rises until the temperature in the hot water channel is higher than or equal to the preset temperature, the switching piece can heat the input pipeline 100 to be communicated with the steam channel 201, spout high temperature steam and be used for the disinfection to washing chamber 11 in, because switch and hot water passageway, the existence of steam passageway 201, can realize that hot water washing finishes before not carrying out the drainage and begin to let in high temperature steam promptly, avoid the temperature in washing chamber 11 to descend at this section of time of drainage obviously, keep the temperature in washing chamber 11, reduce the difference in temperature in high temperature steam and the washing chamber 11, prevent that high temperature steam from getting into in washing chamber 11 because the condition of condensation appears in the difference in temperature, consequently, the sterile effect of follow-up high temperature steam can be improved, in addition, spray arm 200 communicates with input pipeline 100, and utilize the switch to realize the switching of different passageways, the quantity of reducible pipeline, simplify the piping arrangement.

Wherein, when input pipeline 100 begins to carry high temperature steam to spray arm 200 and enters into the hot water passageway, because the hot water of input pipeline 100 and the interior retention of hot water passageway is discharged by high temperature steam, consequently wash in the washing chamber 11 still not ended, and hot water is heated by high temperature steam this moment, can improve the temperature in the washing chamber 11 when getting into in the washing chamber 11, because the difference that hot water washing and high temperature steam disinfection fluid propagation condition required, through set up divided hot water passageway and steam passageway 201 on spray arm 200, can be better carry out different settings according to different demands.

In addition, before the cleaning is not started, the input pipeline 100 is communicated with the hot water channel, the switching piece is only used for switching the input pipeline 100 from being communicated with the hot water channel to being communicated with the steam channel 201 when the temperature in the hot water channel is increased to be higher than or equal to the preset temperature, after the switching is finished, even if the temperature in the hot water channel is reduced again and is lower than the preset temperature, the switching piece cannot be switched back again, and the switching piece can not be used for switching the input pipeline 100 back to the state of being communicated with the hot water channel again until the steam sterilization is finished, so that the cleaning is convenient for the next time.

In one embodiment, as shown in fig. 1, the spray arm 200 is provided with a plurality of first spray ports 202 communicated with the hot water passage and a plurality of second spray ports 203 communicated with the steam passage 201, and the caliber of the second spray ports 203 is smaller than that of the first spray ports 202. The bore of second spout 203 is less, can improve the blowout speed of high temperature steam and make high temperature steam disperse, makes high temperature steam diffuse to near second spout 203 region rapidly, reduces the difference in temperature everywhere in the washing chamber 11, and the condition of condensation appears in reducible high temperature steam, improves the disinfection effect. The first nozzle 202 has a larger caliber, and can form gathered water flow, improve the impact effect on articles in the washing cavity 11 and ensure better washing effect.

In one embodiment, as shown in FIG. 1, the number of second jet ports 203 is greater than the number of first jet ports 202. The number of the second nozzles 203 is larger, so that more areas in the washing chamber 11 can be covered, the washing chamber 11 can be rapidly heated under the action of high-temperature steam, the temperature difference at each position in the washing chamber 11 is reduced, and the disinfection effect is better.

In one embodiment, as shown in fig. 1, the number of the spray arms 200 is at least two, wherein the two spray arms 200 are a first spray arm 200a and a second spray arm 200b, the first spray arm 200a and the second spray arm 200b are arranged at intervals, the second spray arm 200b is arranged above the first spray arm 200a, and the number of the second nozzles 203 on the second spray arm 200b is smaller than the number of the second nozzles 203 on the first spray arm 200 a. Utilize a plurality of spray arms 200 can improve washing and disinfection effect, because the steam of the first spray arm 200a spun by the below is exothermic when rising, can reduce self energy, consequently set up the less nozzle of quantity and can play the effect that reduces the upper and lower layer difference in temperature on the second spray arm 200b on upper strata, this sets up more rationally, reducible waste to high temperature steam, the reduction energy consumption.

In one embodiment, as shown in FIG. 1, the above-mentioned washing and sterilizing structure further includes an auxiliary heating member 300, and the auxiliary heating member 300 is used for heating the air in the washing chamber 11. Utilize auxiliary heating element 300 can heat the air in washing chamber 11 after the washing, improve the temperature in washing chamber 11, also can prevent the difference in temperature in high-temperature steam and the washing chamber 11, reduce the condensation of high-temperature steam, improve disinfection effect.

Alternatively, the auxiliary heating member 300 is provided at the upper end of the washing chamber 11, and does not heat the water in the washing chamber 11, and starts heating the air in the washing chamber 11 as early as possible.

In one embodiment, as shown in fig. 1, the above cleaning and disinfecting structure further includes a temperature controlled switch 400, the temperature controlled switch 400 is disposed at an end of the hot water channel, the switching member connects the input pipe 100 to the hot water channel when the temperature sensed by the temperature controlled switch 400 is lower than a preset temperature, and the switching member connects the input pipe 100 to the steam channel 201 when the temperature sensed by the temperature controlled switch 400 is increased to be greater than or equal to the preset temperature. Utilize the switching action of the steerable switching piece of temperature detect switch 400, because spray arm 200 need rotate, input tube 100 generally can communicate with the middle part of spray arm 200, and temperature detect switch 400 is located hot water passageway's tip, consequently only when the whole back of discharging of the hot water of reserving in the hot water passageway, temperature detect switch 400 just can contact high-temperature steam, just afterwards can be because the temperature that temperature detect switch 400 sensing is higher than preset the temperature, communicate input tube 100 and steam passageway 201, hot water in hot water passageway and the input tube 100 can be emptied completely has been guaranteed.

Alternatively, the switching member may be a three-way valve, and three ports of the three-way valve are respectively communicated with the input pipe 100, the hot water passage and the steam passage 201; or the switching piece is a rotatable piece arranged in the spray arm 200, and the rotation of the rotatable piece is utilized to shield the hot water channel or the steam channel 201 so as to realize switching; or the switching piece is two electromagnetic valves which are respectively arranged in the hot water channel and the steam channel 201, and the switching is realized by closing one of the electromagnetic valves and opening the other electromagnetic valve.

In one embodiment, as shown in fig. 1, the cleaning and disinfecting structure further includes a water supply pipe 510, a hot water assembly 520 and a high temperature steam assembly 530, the hot water assembly 520 and the high temperature steam assembly 530 are respectively communicated with the input pipe 100, and the hot water assembly 520 and the high temperature steam assembly 530 are respectively communicated with the water supply pipe 510. The hot water assembly 520 and the high temperature steam assembly 530 may be used to deliver hot water or high temperature steam, respectively, to the input pipe 100. The hot water assembly 520 and the high temperature steam assembly 530 are supplied with water by the water supply pipe 510, so that the number of pipes can be reduced, the arrangement of the pipes can be simplified, and the cost can be saved.

Wherein, when one of the hot water assembly 520 and the high temperature steam assembly 530 is turned on, the other is turned off.

In one embodiment, as shown in fig. 1, the above-mentioned washing and disinfecting structure further comprises a water softener 540, and the water softener 540 is disposed on the water supply pipeline 510 for softening the fluid in the water supply pipeline 510. The high temperature steam assembly 530 is easy to generate scale, which affects the working efficiency and the service life thereof, and the same water supply pipeline is used for supplying water to the hot water assembly 520 and the high temperature steam assembly 530, so that only one water softener 540 can be arranged, the requirements of heating water and generating soft water of high temperature steam are met, the number of pipelines can be reduced, the structure is simplified, and the cost is reduced.

In one embodiment, as shown in fig. 1, the hot water assembly 520 includes a heater 521 and a hot water pipe 522, the high temperature steam assembly 530 includes a steam pipe 531 and a steam generator 532 disposed on the steam pipe 531, one end of the hot water pipe 522 and one end of the steam pipe 531 are respectively communicated with the water supply pipe 510, the other end of the hot water pipe 522 and the other end of the steam pipe 531 are respectively communicated with the input pipe 100, a first switch 523 is disposed on the hot water pipe 522, a second switch 533 is disposed on the steam pipe 531, and the heater 521 is configured to heat fluid in the water supply pipe 510. The fluid in the water supply pipe 510 is heated by the heater 521, so that hot water can be directly input from the hot water pipe 522 to the input pipe 100 for hot water cleaning, or the hot water can also enter the steam pipe 531, and high-temperature steam is formed by heating the steam generator 532 for sterilization.

In one embodiment, as shown in fig. 1, the hot water pipe 522 and the steam pipe 531 are respectively connected to one end of the water supply pipe 510, and the heater 521 is disposed at the connection between the water supply pipe 510 and the hot water pipe 522 and the steam pipe 531. The heating effect of the heater 521 is better.

In one embodiment, as shown in FIG. 1, the high temperature steam assembly 530 further includes a superheated heater 534 disposed on the steam conduit 531, the superheated heater 534 being disposed on a side of the steam generator 532 remote from the water conduit 510. The superheated steam can be generated by the superheated heater 534 to further improve the sterilization effect.

In one embodiment, as shown in fig. 1, the above-mentioned cleaning and disinfecting structure further comprises a drying assembly 600, the drying assembly 600 comprises a drying heating element 610 and an air intake fan 620, and the air intake fan 620 is used for sending the air heated by the drying heating element 610 into the washing chamber 11. The drying component 600 can dry the inside of the washing cavity 11 after the disinfection is finished, so as to ensure the drying of the tableware.

Optionally, as shown in FIG. 1, the above-mentioned washing and disinfecting structure further comprises a ventilating fan 710 for exhausting the air in the washing chamber 11. Exhaust fan 710 may prevent the pressure in washing chamber 11 from being too high, and may be coupled to drying assembly 600 to dry the inside of washing chamber 11.

In one embodiment, the preset temperature is the temperature of the superheated steam. When presetting the temperature for superheated steam's temperature, when the temperature in the hot water passageway is less than preset temperature, show still to have the hot water of retaining in the hot water passageway, only when only having superheated steam when hot water arranges in the hot water passageway to the greatest extent, the temperature in the hot water passageway just can rise to more than or equal to preset temperature, can play better disinfection effect.

Optionally, the predetermined temperature is at least 150 ℃, which is the lower temperature of the superheated steam.

As shown in fig. 1, an embodiment discloses a dishwasher, which includes a housing 10 and a cleaning and disinfecting structure according to any of the above embodiments, wherein a washing chamber 11 is disposed in the housing 10, and a spray arm 200 is disposed in the washing chamber 11.

In the dishwasher, hot water can be conveyed to the spray arm 200 by using the input pipeline 100, the hot water has a lower temperature, can enter the hot water channel and spray the hot water into the washing cavity 11 for cleaning, and then the input pipeline 100 conveys high-temperature steam to the spray arm 200, because the hot water channel and the input pipeline 100 can retain the hot water, the high-temperature steam can push the hot water in the input pipeline 100 and the hot water channel at the beginning, so as to play a role of emptying the retained hot water in the input pipeline 100 and the hot water channel, the high-temperature steam can heat the hot water, the temperature in the washing cavity 11 can be increased, the temperature difference between the hot water and the washing cavity 11 when the high-temperature steam is subsequently introduced is reduced, along with the discharge of the retained hot water, the high-temperature steam enters the hot water channel, the temperature in the hot water channel rises until the temperature in the hot water channel is higher than or equal to a preset temperature, the switching piece switches the input pipeline 100 to be communicated with the steam channel 201, spout high temperature steam and be used for the disinfection to washing chamber 11 in, because switch and hot water passageway, the existence of steam passageway 201, can realize that hot water washing finishes before not carrying out the drainage and begin to let in high temperature steam promptly, avoid the temperature in washing chamber 11 to descend at this section of time of drainage obviously, keep the temperature in washing chamber 11, reduce the difference in temperature in high temperature steam and the washing chamber 11, prevent that high temperature steam from getting into in washing chamber 11 because the condition of condensation appears in the difference in temperature, consequently, the sterile effect of follow-up high temperature steam can be improved, in addition, spray arm 200 communicates with input pipeline 100, and utilize the switch to realize the switching of different passageways, the quantity of reducible pipeline, simplify the piping arrangement.

Optionally, as shown in fig. 1, a drain tank 12 is disposed on the bottom wall of the washing chamber 11, and a filter screen is disposed at the notch of the drain tank 12. The water from the washing process enters the drain tank 12 for recycling or draining.

Optionally, as shown in fig. 1, the dishwasher further includes a pump body 20, the pump body 20 is disposed in the water supply pipeline 510 for providing a certain water pressure to the water in the water supply pipeline 510 for convenient transportation.

As shown in FIG. 2, one embodiment discloses a cleaning and disinfecting method, comprising the following steps:

the input pipeline 100 outputs hot water to the hot water channel of the spray arm 200 and sprays the hot water into the washing chamber 11;

the input pipe 100 outputs high-temperature steam to the hot water channel;

when the temperature in the hot water passage rises to be greater than or equal to a preset temperature, the switching member communicates the input pipe 100 with the steam passage 201 of the spray arm 200 and sprays high-temperature steam into the washing chamber 11.

In the cleaning and disinfecting method, hot water can be conveyed to the spray arm 200 by using the input pipeline 100, the hot water has lower temperature and can enter the hot water channel and spray the hot water into the washing cavity 11 for cleaning, then the input pipeline 100 conveys high-temperature steam to the spray arm 200, because the hot water channel and the input pipeline 100 can contain the hot water, the high-temperature steam can push the hot water in the input pipeline 100 and the hot water channel at first to play a role of emptying the hot water contained in the input pipeline 100 and the hot water channel, the temperature in the washing cavity 11 can be increased by the high-temperature steam hot water, the temperature difference between the high-temperature steam and the washing cavity 11 when the high-temperature steam is introduced subsequently is reduced, the high-temperature steam enters the hot water channel along with the discharge of the hot water, the temperature in the hot water channel is increased until the temperature in the hot water channel is higher than or equal to the preset temperature, the switching piece can heat the input pipeline 100 to be communicated with the steam channel 201, spout high temperature steam and be used for the disinfection to washing chamber 11 in, because switch and hot water passageway, the existence of steam passageway 201, can realize that hot water washing finishes before not carrying out the drainage and begin to let in high temperature steam promptly, avoid the temperature in washing chamber 11 to descend at this section of time of drainage obviously, keep the temperature in washing chamber 11, reduce the difference in temperature in high temperature steam and the washing chamber 11, prevent that high temperature steam from getting into in washing chamber 11 because the condition of condensation appears in the difference in temperature, consequently, the sterile effect of follow-up high temperature steam can be improved, in addition, spray arm 200 communicates with input pipeline 100, and utilize the switch to realize the switching of different passageways, the quantity of reducible pipeline, simplify the piping arrangement.

Alternatively, the input pipe 100 communicates with the hot water passage before the input pipe 100 outputs the hot water to the hot water passage of the spray arm 200. That is, the communication between the input pipe 100 and the hot water passage is an initial state before the start of the cleaning and disinfecting, and after the cleaning and disinfecting is finished, the hot water passage is communicated with the input pipe 100 again.

In one embodiment, after the input pipe 100 outputs the high-temperature steam to the hot water passage, the method further includes the following steps:

drainage is started.

Because high temperature steam begins to get into input pipeline 100 before the drainage promptly for the hot water who remains in input pipeline 100 and the hot water passageway is discharged, and has improved the temperature in washing chamber 11, consequently the temperature in drainage in-process washing chamber 11 can not reduce, can promote on the contrary, with the difference in temperature between reduction and the high temperature steam, condensation appears when preventing the high temperature steam disinfection, can improve disinfection effect.

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 (15)

1. A cleaning and disinfecting structure is characterized by comprising an input pipeline, a switching piece and a spray arm, the input pipeline is used for outputting hot water or high-temperature steam, the spray arm is arranged in a washing cavity of the box body, the spray arm is communicated with the input pipeline, a hot water channel and a steam channel are arranged in the spray arm, when the temperature in the hot water channel is increased to be more than or equal to the preset temperature, the switching piece enables the input pipeline to be switched from being communicated with the hot water channel to being communicated with the steam channel, and the steam heating device also comprises a hot water assembly and a high-temperature steam assembly, the hot water assembly and the high-temperature steam assembly are respectively communicated with the input pipeline, a plurality of first nozzles communicated with the hot water channel and a plurality of second nozzles communicated with the steam channel are arranged on the spray arm, and the caliber of each second nozzle is smaller than that of each first nozzle.

2. The washing and disinfecting structure of claim 1, characterized in that the number of second spouts is greater than the number of first spouts.

3. The cleaning and disinfecting structure of claim 1, wherein the number of the spray arms is at least two, wherein two of the spray arms are a first spray arm and a second spray arm, the first spray arm and the second spray arm are arranged at intervals, the second spray arm is arranged above the first spray arm, and the number of the second nozzles on the second spray arm is smaller than that of the second nozzles on the first spray arm.

4. A cleaning and disinfecting structure as recited in claim 1, characterized in that it further comprises an auxiliary heating member for heating the air in the washing chamber.

5. The washing and disinfecting structure according to claim 1, further comprising a temperature control switch provided at an end portion of the hot water passage, wherein the switching member connects the input pipe to the hot water passage when the temperature sensed by the temperature control switch is lower than the preset temperature, and connects the input pipe to the steam passage when the temperature sensed by the temperature control switch is increased to be greater than or equal to the preset temperature.

6. The cleaning and disinfecting structure of claim 1, further comprising a water supply pipeline, wherein the hot water assembly and the high-temperature steam assembly are respectively communicated with the water supply pipeline.

7. The cleaning and disinfecting structure of claim 6, further comprising a water softener provided on the water supply pipeline for softening the fluid in the water supply pipeline.

8. The cleaning and disinfecting structure of claim 6, wherein the hot water component comprises a heater and a hot water pipeline, the high-temperature steam component comprises a steam pipeline and a steam generator arranged on the steam pipeline, one end of the hot water pipeline and one end of the steam pipeline are respectively communicated with the water supply pipeline, the other end of the hot water pipeline and the other end of the steam pipeline are respectively communicated with the input pipeline, a first switch is arranged on the hot water pipeline, a second switch is arranged on the steam pipeline, and the heater is used for heating fluid in the water supply pipeline.

9. The cleaning and disinfecting structure of claim 8, wherein the hot water pipe and the steam pipe are respectively communicated with an end portion of the water supply pipe, and the heater is disposed at a junction of the water supply pipe and the hot water pipe and the steam pipe.

10. The cleaning and disinfecting structure of claim 8, wherein the high-temperature steam assembly further comprises a superheated heater disposed on the steam conduit, the superheated heater being disposed on a side of the steam generator remote from the water supply conduit.

11. The cleaning and disinfecting structure of any one of claims 1 to 10, further comprising a drying assembly including a drying heating element and an air inlet fan for feeding air heated by the drying heating element into the washing chamber.

12. The washing and disinfecting structure of any one of claims 1-10, characterized in that the preset temperature is the temperature of superheated steam.

13. A dishwasher, comprising a cabinet and the cleaning and disinfecting structure as claimed in any one of claims 1 to 12, wherein a washing chamber is provided in the cabinet, and the spray arm is provided in the washing chamber.

14. A cleaning and disinfecting method is characterized by comprising the following steps:

the input pipeline outputs hot water to a hot water channel of the spray arm and sprays the hot water into the washing cavity;

the input pipeline outputs high-temperature steam to the hot water channel;

when the temperature in the hot water channel is increased to be higher than or equal to the preset temperature, the switching piece enables the input pipeline to be communicated with the steam channel of the spray arm, and high-temperature steam is sprayed out to the washing cavity.

15. The cleaning and disinfecting method of claim 14, further comprising the steps of, after the input pipe outputs high-temperature steam to the hot water passage:

drainage is started.

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