WO2019001519A1 - Automatic steam dishwasher and operation method therefor - Google Patents

Abstract

Provided in the present invention is an automatic steam dishwasher, comprising a tank body that is used for accommodating and washing tableware, a drainage pipe being arranged below the tank body; the tank body is in communication with a circulation water pipe, the circulation water pipe being connected thereon to a high-pressure water pump; an inlet pipe of the high-pressure water pump communicates with an external water source, and an outlet pipe thereof communicates with a water spraying device within the tank body; the water spraying device comprises a plurality of hollow risers that are provided with water spray holes, the risers being partially or entirely fixedly arranged within the tank body in such a manner so as to be able to spray water into the tank body; a lower part of the tank body is provided with a heating device, which is used for heating water within the tank body and for generating steam that is used for steaming and washing tableware within the tank body; an upper part of the tank body is provided with an exhaust port; the automatic dishwasher further comprises a steam condensing device that is separated from the tank body and that communicates with the exhaust port, the steam condensing device being used for condensing steam that is discharged from the exhaust port and then discharging the same by means of a water outlet thereof.

Description

Steam automatic dishwasher and operation method thereof Technical field

The present invention relates to a steam automatic dishwasher, in particular to an automatic dishwasher using steam instead of a chemical detergent and having a matching structure, and a method of operating the automatic dishwasher.

Background technique

Automatic dishwashers are widely used as kitchen appliances. Existing dishwashers are versatile, such as UV disinfection, ozone disinfection, and ultrasonic cleaning. But as a basic function, washing is still the most common and important function.

The existing dishwasher with washing function generally has several layers of grids arranged in the dishwasher for placing the dishes to be washed, and a water spray pipe is installed at the bottom of the dishwasher or under each layer of the grid. The water spray pipe is sprayed while rotating the tableware on the grid by water. However, in practice, this method of dishwashing with the bottom up water spray has a great defect: by gravity, the upward jet of water has a downward acceleration, and the water jet velocity is getting smaller and smaller, resulting in the final falling on the dish to be washed. The water flow is small and the cleaning effect is not good; since the tableware such as bowls, plates, spoons, etc. are generally placed upright, that is, oily or dirty surfaces are facing the side, when washing dishes or appliances with deep concave surfaces, water is sprayed from below. It is difficult to clean into the concave surface, especially the lower part of the concave surface is easier to clean due to the problem of the angle of the water spray. If the dirty surface of the tableware is facing down, the lower surface can only be washed and the upper surface can not be cleaned.

In addition, traditional dishwashers use chemically decontaminated and cleaned detergents in solid or liquid form. Obviously, they are flawed in terms of food safety and environmental protection.

If water vapor can be used to soften and remove oil, it is obviously safer and more environmentally friendly. However, since the conventional dishwasher does not have a steam treatment function, if steam washing is used, the discharge of high-temperature steam will obviously cause new environmental pollution, and therefore, in order to avoid high-temperature steam discharge, the conventional dishwasher The water temperature used in the interior can only reach 75 degrees, which makes it impossible to use steam washing.

In summary, the object of the present invention is to provide a new type of automatic dishwasher which uses steam instead of the traditional detergent and sprays water at the upper end to achieve multi-angle flushing to avoid poor local cleaning effect. At the same time, the invention provides a method of operation of the automatic dishwasher.

Summary of the invention

The object of the invention is achieved by the following technical solutions:

A steam automatic dishwasher includes a tank for accommodating and washing dishes; a drain pipe is disposed under the tank; the tank is connected with a circulating water pipe, and a high-pressure water pump is connected to the circulating water pipe; The inlet pipe of the high-pressure water pump communicates with an external water source, and the outlet pipe communicates with the water spray device in the tank; the water spray device is a plurality of hollow risers provided with water spray holes, and the riser can The method of spraying water into the tank is partially or integrally fixed in the box; the lower part of the box is provided with heating means for heating the water in the box and generating a tableware for the box body. Fumigation-washed steam; an upper portion of the tank is provided with an exhaust port; the automatic dishwasher further includes a steam condensing device separate from the tank and communicating with the exhaust port, the steam condensing device The steam discharged from the exhaust port is condensed and discharged through its water outlet, and the water outlet is connected to the external discharge of the automatic dishwasher.

Preferably, the water outlet is in communication with the drain pipe and is connected to the sewer. The water outlet may also be in communication with the sewer.

Preferably, the number of the risers is plural, and the lower ends of the plurality of risers are uniformly fixedly disposed at the bottom of the tank, and each riser is provided with a plurality of water spray holes along the axial direction thereof, and the spray The outlet of the water hole is facing the cabinet at any time

Preferably, the automatic dishwasher further includes a driving device, and the riser is connected to the driving device, and the driving device is configured to drive the riser to circulate around its axis.

Preferably, an angle is provided between two adjacent risers, and the angle is always maintained during the cyclic swing of the driving device.

Preferably, the heights of the water spray holes on the plurality of the risers are staggered.

Preferably, the bottom of the box is rectangular, and each of the four corners is respectively provided with a riser, each of the risers is partially fixed to the bottom or the side of the box, and the portion with the water spray hole can be The starting device drives a cyclic swing, the angle between each adjacent two risers is 90°, and the water spray direction of the water spray holes of each adjacent two risers is in a cyclic swing process Always maintain an angle of 90°.

Optionally, the steam condensing device is a condenser or a semiconductor refrigeration device.

Preferably, the water outlet of the steam condensing device is connected to the pressure relief water storage tank through a condensing water pipe, and the water outlet of the pressure relief water storage tank is connected to the outside of the automatic dishwasher through the condensed water discharge device.

Preferably, the top of the pressure relief water storage tank is provided with a pressure relief hole.

The condensate draining device comprises: a condensate drain pipe, wherein the water outlet of the pressure-reducing water storage tank communicates with the condensate drain pipe through a one-way valve, so that the condensed water in the pressure-reducing water storage tank does not flow back The other end of the condensate drain pipe communicates with the drain pipe, and then communicates with the sewer pipe or directly communicates with the sewer pipe.

The invention also provides a method for operating a steam automatic dishwasher, comprising the steps of:

S1, receiving an open command, or further including a program selection command;

S2, the water is continuously poured into the box body, and the water to be washed in the box body is directly washed by the normal temperature water, and the sewage is drained by the drain pipe, and the step continues for the first time period;

S3. Close the drain valve, continue to enter the water in the tank, heat the water to 100°, generate steam, and steam fumigation the dishes to be cleaned for a second period of time;

S4, open the drain pipe valve, continue to enter the water, the normal temperature water directly flushes the tableware to be washed in the box body, and drains the sewage by the drain pipe, the step continues for the third time period;

S5, drying;

The duration of the first time period, the second time period, and the third time period is determined by the model or by the program selected in S1.

After the S4, preferably, the method may further include:

Sp1, close the drain valve, enter the water, and heat the water to make it warm water below 100°, and wash the tableware for multiple times of warm water shower; then open the drain valve and drain, this step lasts for the fourth time. segment;

Sp2, into the water, rinse at room temperature, for the fifth time period;

The duration of the fourth time period and the fifth time period is determined by the model or by the program selected in S1.

The beneficial effects of the invention are:

Use steam instead of chemical detergent for dishwashing, environmentally friendly, and high temperature steam is not directly discharged to avoid environmental pollution and damage; at the same time, the riser is placed at the bottom of the tank, the upper end of the riser sprays water, and the water flow has gravity Acceleration, large water pressure, good cleaning effect; multiple riser settings can achieve multi-angle flushing, avoiding poor local cleaning, and at the same time achieve self-cleaning function of the device.

DRAWINGS

1 is a schematic structural view of an automatic dishwasher according to an embodiment of the present invention;

Figure 5 is a top plan view of the interior of an automatic dishwasher cabinet in accordance with an embodiment of the present invention.

Detailed ways

As shown in FIG. 1-2, the embodiment provides a steam automatic dishwasher, which includes a box body 1 on which an intelligent control panel is mounted. There is a cover 2 on the upper side of the box, and a seal ring is arranged between the cover 2 and the box 1. A sump 3 is disposed below the tank 1, and a filter tray 10 is installed at the inlet of the sump 3, and water in the tank 1 flows into the sump 3 through the filter disc 10. A drain pipe 4 is connected to the bottom of the sump 3, a solenoid valve is installed on the drain pipe 4, a solenoid valve is used to control the discharge of the waste water; a circulation water pipe 5 is connected to the side of the sump 3, and a filter 11 is installed at the entrance of the circulation water pipe 5 to make the set The water in the water tank 3 passes through the filter screen 11 and enters the circulation water pipe 5 for recycling. A solenoid valve and a high pressure water pump 6 are connected to the circulating water pipe 5 in this order. The outlet pipe of the high pressure water pump 6, that is, the outlet end of the circulating water pipe 5, communicates with the water spray device in the casing 1. An inlet pipe is also installed at the inlet end of the high-pressure water pump 6, and a solenoid valve is connected to the inlet pipe.

The water spray device is a hollow vertical mounted riser 7, and a plurality of spray holes 701 are opened in the riser 7. The lower end of the riser 7 is fixedly or detachably connected to the bottom of the casing 1 to prevent the riser 7 from shaking during operation. In order to increase the water spray range, various parts of the tableware placed on the grid can be washed, and a driving device 12 is installed at the bottom of the box 1. The bottom of the riser 7 is connected with the driving device 12, and the driving device 12 can drive the riser Circulate around its own axis. In order to optimize the structure, the bottom of the box is rectangular, and the riser 7 has four in the embodiment, which are respectively installed at the four corners of the box 1. The water spray hole 701 on the riser 7 can only face the inside of the box. Set in the 90° range. For each part in the casing 1, the higher water pressure can be obtained without increasing the power of the high pressure water pump 6, and the four risers 7 are all set to rotate in the range of 90°, and each adjacent two The angle between the risers is 90°, and the angle of the water spray direction of each of the two adjacent risers is also 90°, so that the spray holes 701 on the riser 7 Only two rows need to be arranged in the axial direction, and the water spray water pressure is increased by reducing the number of water spray holes 701, and at the same time, no dead angle spray washing is realized. A more preferred embodiment is that the heights of the water spray holes 701 of the four risers 7 are staggered so that the four risers 7 rotate along their axes, and the water discharge angle of the spray holes 701 rotates, and the water discharge height is also alternately complementary. Improve the spray effect. Moreover, since the water spray hole 701 faces the side wall or at the same time faces the cover 2, the high pressure water can be directly flushed to the four walls of the case 1 and the cover 2 to achieve self-cleaning of the machine.

In order to enhance the cleaning effect, a heating device 13 is further disposed at the bottom of the box body 1 for heating the water to about 100 ° C, and the residue of grease and other strong adhesive force is softened by steam, which is more favorable for peeling, and at the same time, the temperature is higher. The water-soluble fat is stronger, which further enhances the cleaning effect.

In order to achieve health and environmental protection purposes, an exhaust pipe 8 is also provided at the upper portion of the casing 1.

The automatic dishwasher of this embodiment further includes a steam condensing device disposed outside the casing 1 in communication with the outlet of the exhaust pipe 8, and the steam condensing device may be a condenser or a semiconductor refrigeration device. The steam condensing device is configured to condense high-temperature steam discharged from the outlet of the exhaust pipe 8 into a liquid and discharge it into a sewer. The steam condensing device may be disposed at the side or the bottom of the tank 1, and is preferably installed at the bottom according to the structure of the automatic dishwasher.

Specifically, in one embodiment, the outlet of the exhaust pipe 8 is connected to the inlet of the condensing plate through a steam exhaust pipe, and a condensed water pipe is connected at the outlet of the condensing plate, and the condensate water pipe outlet is connected to the inlet of the top of the pressure-reducing water storage tank The condensate drain pipe is connected to the drain water storage tank via a one-way valve, and the condensate drain pipe is connected to the drain pipe of the tank 1 to discharge the condensed water into the sewer. Preferably, a pressure relief hole is further opened in the upper part of the pressure relief water storage tank, which can prevent the steam pressure in the tank 1 from abnormally increasing and the condensation is not timely caused by the damage.

Another embodiment is: no pressure relief water storage tank is used, and a semiconductor refrigeration device is used as the steam condensation device. An exhaust pipe is connected outside the outlet of the exhaust pipe 8 of the casing 1. The steam exhaust pipe is connected to the semiconductor refrigeration device to condense the steam flowing through the exhaust pipe into water, and the water outlet of the semiconductor refrigeration device is connected to the condensing water pipe and the condensing water pipe. It merges with the drain pipe of the tank 1 and is discharged directly into the sewer.

The method for operating the automatic dishwasher of this embodiment comprises the following steps:

S1, receiving an open command, or further including a program selection command;

S2, the water is continuously poured into the box body, the room temperature water directly washes the tableware to be washed in the box body, and the sewage is drained by the drain pipe, the step is continued for the first time period; the purpose of the step is to wash the residue on the surface of the tableware and part of the heavy oil;

S3. Close the drain valve, continue to enter the water in the tank, heat the water to 100°, generate steam, and steam fumigate the tableware for a second period of time; the purpose of the step is to dissolve the grease, soften the stubborn residue, and Disinfect the entire cabinet environment, including tableware;

S4, open the drain pipe valve, continue to enter the water, the normal temperature water directly flushes the tableware to be washed in the box body, and drains the sewage by the drain pipe, the step continues for the third time period;

S5, drying;

The duration of the first time period, the second time period, and the third time period is determined by the model or by the program selected in S1.

In order to achieve a better cleaning effect, preferably, between the S4 and the S5, the method may further include:

Sp1, close the drain valve, enter the water, and heat the water to make it warm water below 100°, and wash the tableware for multiple times of warm water shower; then open the drain valve and drain, this step lasts for the fourth time. segment;

Sp2, into the water, rinse at room temperature, for the fifth time period;

The duration of the fourth time period and the fifth time period is determined by the model or by the program selected in S1.

The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the invention is not limited to the embodiments described above. It is to be understood that those skilled in the art can make various changes without departing from the spirit and scope of the invention.

Claims (13)

A steam automatic dishwasher includes a tank for accommodating and washing dishes; a drain pipe is disposed under the tank; the tank is connected with a circulating water pipe, and a high-pressure water pump is connected to the circulating water pipe; The inlet pipe of the high-pressure water pump communicates with an external water source, and the outlet pipe communicates with the water spray device in the tank; the water spray device is a plurality of hollow risers provided with water spray holes, and the riser can The method of spraying water into the tank is partially or integrally fixed in the box; the lower part of the box is provided with heating means for heating the water in the box and generating a tableware for the box body. Fumigation-washed steam; an upper portion of the tank is provided with an exhaust port; the automatic dishwasher further includes a steam condensing device separate from the tank and communicating with the exhaust port, the steam condensing device The steam discharged from the exhaust port is condensed and discharged through its water outlet, and the water outlet is connected to the external discharge of the automatic dishwasher. The steam automatic dishwasher according to claim 1, wherein the water outlet is in communication with the drain pipe and is connected to the sewer, or the water outlet is directly connected to the sewer. The steam automatic dishwasher according to claim 1, wherein the number of the risers is plural, and the lower ends of the plurality of risers are uniformly fixedly disposed at the bottom of the tank, and each riser is along the axis thereof. a plurality of water spray holes are provided in the direction, and the outlet of the water spray holes is directed toward the box at any time A steam automatic dishwasher according to claim 3, further comprising a driving device, said riser being connected to said driving device, said driving device for driving said riser to circulate around its axis . The steam automatic dishwasher according to claim 4, wherein an angle between the adjacent two risers is provided, and the clip is always kept during the cyclic swing of the driving device. angle. A steam automatic dishwasher according to any one of claims 3 to 5, wherein heights of said water spray holes on said plurality of said risers are alternately arranged. The steam automatic dishwasher according to claim 6, wherein the bottom of the box is rectangular, and each of the four corners is provided with a riser, and each riser is partially fixed to the bottom of the case. Or the side, the portion provided with the water spray hole can be driven to oscillate by the starting device, the angle between each adjacent two risers is 90°, and each adjacent two risers The water spray direction of the water spray hole is always maintained at an angle of 90° during the cyclic swing. The steam automatic dishwasher according to claim 1, wherein the steam condensing device is a condenser or a semiconductor refrigeration device. The steam automatic dishwasher according to claim 8, wherein the water outlet of the steam condensing device is connected to the pressure relief water storage tank through a condensing water pipe, and the water outlet of the pressure relief water storage tank is discharged through the condensed water. The device is connected to the exterior of the automatic dishwasher. A steam automatic dishwasher according to claim 9, wherein said pressure relief water storage tank is provided with a pressure relief hole at the top. A steam automatic dishwasher according to claim 9 or 10, wherein said condensate draining means comprises: a condensate drain pipe, said water discharge port of said pressure relief water tank passing through a one-way valve and said condensing The water drain pipe is connected, and the other end of the condensate drain pipe communicates with the drain pipe, and then communicates with the sewer pipe or directly communicates with the sewer pipe. A method of operating a steam automatic dishwasher, characterized in that it comprises the following steps: S1, receiving an open command, or further including a program selection command; S2, the water is continuously poured into the box body, and the water to be washed in the box body is directly washed by the normal temperature water, and the sewage is drained by the drain pipe, and the step continues for the first time period; S3. Close the drain valve, continue to enter the water in the tank, heat the water to 100°, generate steam, and steam fumigation the dishes to be cleaned for a second period of time; S4, open the drain pipe valve, continue to enter the water, the normal temperature water directly flushes the tableware to be washed in the box body, and drains the sewage by the drain pipe, the step continues for the third time period; S5, drying; The duration of the first time period, the second time period, and the third time period is determined by the model or by the program selected in S1. The method of operating a steam automatic dishwasher according to claim 12, further comprising: between said S4 and S5, further comprising: Sp1, close the drain valve, enter the water, and heat the water to make it warm water below 100°, and wash the tableware for multiple times of warm water shower; then open the drain valve and drain, this step lasts for the fourth time. segment; Sp2, into the water, rinse at room temperature, for the fifth time period; The duration of the fourth time period and the fifth time period is determined by the model or by the program selected in S1.

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