JP3799733B2 - washing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a washing machine such as a dishwasher, and more particularly to a washing and drying mechanism that performs washing or drying by jetting washing water or air from a jet nozzle.
[0002]
[Prior art]
A dishwasher is an example of a washing machine that performs washing by spraying washing water from an injection nozzle onto an object to be cleaned installed in a washing tank. Hereinafter, a conventional dishwasher will be described with reference to FIG.
[0003]
When washing dishes, the dishes are stored in the dish basket 32 of the washing tank 31, and the detergent is introduced to start the operation. When the operation is started, first, a water supply step of supplying a predetermined amount of cleaning water to the cleaning tank 31 is executed. Subsequently, a main washing process is performed in which the washing water pressurized by the washing pump 33 and heated by the heater 34 is jetted from the jet nozzle 35 together with the detergent. The washing water is ejected from the ejection holes 36 a to 36 f of the ejection nozzle 35 in the vertical direction or obliquely upward. The injection nozzle 35 rotates substantially horizontally by this injection reaction force. Therefore, most of the washing water is jetted inclining in the direction opposite to the rotation direction of the jet nozzle 35 and collides with the tableware. The dishes are washed by the action of the washing water collision force, detergent, heat and the like.
[0004]
After a predetermined time of the main washing process, the apparatus enters a draining process in which cleaning water containing dirt washed off from the tableware and the like is discharged to the outside by the drainage pump 37. Subsequently, a water supply process for newly supplying cleaning water, and a rinsing process for injecting cleaning water from the injection nozzle 35 in order to rinse the tableware soiled with detergent or leftovers (stained on the tableware is also referred to as leftovers), The draining step is continuously repeated four times to complete the cleaning step.
[0005]
Then, feed the cleaning tank 31 air from outside through the air blowing duct or al blower port 40 into the cleaning tank 31 by the blower 38, intermittently make Driving warm air heater 34, in this hot air A drying process for evaporating water droplets attached to the tableware is performed. In this drying step, the humid air in the cleaning tank 31 is discharged from the exhaust port 41 to the outside of the apparatus. Reference numeral 42 denotes a control device that controls the operation of the cleaning pump 33, the heater 34, and the like. Reference numeral 43 denotes an air inlet that feeds indoor air into the blower 38. A water supply valve 44 opens and closes the water supply path for the cleaning water.
[0006]
[Problems to be solved by the invention]
In general, the washing machine including the dishwasher having the above-described conventional configuration has the following problems.
[0007]
When cleaning water is ejected from the cleaning nozzle 35 at a predetermined flow rate in the cleaning process, the water level of the cleaning water decreases. In order for the cleaning pump 33 to stably pressurize the cleaning water at this time, a large amount of cleaning water that does not suck air into the cleaning pump 33 is stored in the cleaning tank 31 in advance even when the cleaning water level drops. It is necessary to keep it. Accordingly, in order to obtain a predetermined cleaning performance in the cleaning process, a large capacity of the heater 34 for heating the cleaning water together with the tableware to a predetermined temperature is required. Moreover, the heating requires a long time, and the amount of water used in the cleaning operation, the amount of power consumption, and the operation time are required.
[0008]
Further, in the drying process, air is blown in a substantially constant direction from the air blowing port 40 fixed on the side surface of the washing tank 31, so that it is not possible to uniformly blow the dishes in the washing tank 31. That is, the drying performance of the tableware varies depending on the position of the tableware basket 32. Therefore, in order to obtain a predetermined drying performance as a whole, the operation time is adjusted to a portion having a low drying performance, and as a result, the operation time in the drying operation is long.
[0009]
In particular, in order to execute the above-described washing process and drying process, in addition to the washing pump 33, a drainage pump 37 and a blower 38 are required. Thus, since three motors for driving the mechanism for cleaning and drying are required, the number of parts is large and the structure is complicated. Moreover, the ratio of these mechanical units to the entire volume of such a conventional washing machine is large. That is, the volume for storing tableware is small, and the size of the tableware that can be stored is limited.
[0010]
This invention solves the subject which the above conventional structures have. In particular, an object of the present invention is to provide a washing machine capable of obtaining predetermined washing performance and drying performance with a simple washing / drying mechanism.
[0011]
[Means for Solving the Problems]
The cleaning machine of the present invention includes a cleaning tank for storing an object to be cleaned, an injection nozzle having a blower hole arranged at the bottom of the cleaning tank for storing cleaning water, a blower for sending air to the injection nozzle, and a cleaning water. A drainage path for discharging to the outside and a drainage pump for discharging the cleaning water are provided, and the cleaning water is supplied to the cleaning tank so that the blower holes of the injection nozzles are submerged, and is pressurized by the blower during cleaning. The blown air is jetted upward from the blower hole toward the object to be cleaned, and the blown-off cleaning water is sprayed onto the object to be cleaned and, at the time of drying, the air pressurized by the blower is used as the jet nozzle. It is designed to be ejected from the object to be cleaned . According to the present invention, it is possible to perform the washing and drying in a single blower, it is possible to obtain a predetermined cleaning performance and drying performance in a simple cleaning and drying mechanism.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
The invention described in claim 1 of the present invention is a cleaning tank for storing an object to be cleaned, an injection nozzle having an air blowing hole arranged at the bottom of the cleaning tank for storing cleaning water, a blower for sending air to the injection nozzle, A drainage path for discharging the cleaning water to the outside of the machine and a drainage pump for discharging the cleaning water are supplied to the cleaning tank so that the blowing hole of the spray nozzle is submerged. The air pressurized by the air is sprayed upward from the blow hole toward the object to be cleaned, and the washed water blown off is sprayed on the object to be cleaned as water droplets. At the time of drying, the air pressurized by the blower is used. In this way, in the cleaning process, air is jetted from the jet nozzle by the blower, and the washing water in the vicinity of the blow hole is accelerated by this high-speed air. And It is injected into the wash to wash it with. Moreover, the rinse process which has a rinse effect | action is performed by discharging | emitting dirty wash water from a drainage path, and injecting new wash water to a to-be-washed | cleaned object. Further, in the drying process, the object to be cleaned is dried by operating the blower and ejecting air from the spray nozzle. Thus, washing and drying are performed by a single blower, and the washing and drying mechanism is simple.
[0013]
The invention according to claim 2 of the present invention, in addition to the first aspect of the invention, it is connected to the cleaning tank so as to circulate the air in the cleaning tank and the blower and the injection nozzle that is provided with circulating air passage With this configuration, in the cleaning process, the air that accelerates the cleaning water circulates through the circulation air passage and is repeatedly injected onto the object to be cleaned. For this reason, the washing water does not flow out of the machine from the washing tank, and is circulated through the circulation air passage and the washing tank together with air, and performs a predetermined washing action with a small amount of washing water.
[0014]
In addition to the invention described in claim 2, the invention described in claim 3 of the present invention is the first ventilation path in which one end of the circulation air passage is connected to the inside of the washing tank and the second ventilation for taking in air outside the machine. with branches the road, which was provided with a switching valve for switching the first air passage and the second air passage, with this configuration, the washing step is to open the first air passage, the second By closing the ventilation path, the air that has accelerated the cleaning water circulates through the circulation air passage and is repeatedly injected onto the object to be cleaned. For this reason, the washing water does not flow out of the machine from the washing tank, and has a predetermined washing action with a small amount of washing water. In addition to this, by operating the switching valve in the drying process, closing the first ventilation path, opening the second ventilation path, sending outside air into the washing tank, and discharging moisture from the exhaust port, The object to be cleaned with the cleaning water adhered is dried.
[0015]
The invention of claim 4 wherein the present invention, in addition to the first aspect of the invention, the drainage pump is thereby formed with swirl reverses the drain pump in the washing step and is obtained by so as to drive, When the drainage pump reverses during the washing process, the drainage pump acts to push the washing water from the drainage path into the washing tank. For this reason, even if air is pressurized and sent to the washing tank and the internal pressure rises, the washing water is reliably sealed in the washing tank and the outflow to the outside of the machine is suppressed. Since it can, it has a washing action with less washing water.
[0016]
The invention according to claim 5 of the present invention is that, in addition to the invention according to claim 2 or 3 , a heater is provided in at least one of the blower, the injection nozzle or the circulation air passage. The washing water and air can be heated to an appropriate temperature with the heater. That is, in the cleaning process, the air is heated, so that the cleaning water and the object to be cleaned in the cleaning tank are heated to increase the cleaning power. Further, in the drying process, air is heated, whereby the object to be cleaned and the attached water droplets are heated with warm air to promote evaporation of the water droplets, so that the drying performance is high. That is, predetermined cleaning and drying can be performed in a short time.
[0017]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0018]
Example 1
In FIG. 1, reference numeral 1 denotes a washing tank, and 2 a table basket for storing objects to be cleaned such as tableware, which is provided in the washing tank 1. An injection nozzle 4 having an air blowing hole 3 for ejecting air is disposed at the bottom of the cleaning tank 1. The spray nozzle 4 is fixed to the bottom of the cleaning tank 1 and has a substantially circular shape, and a plurality of air blowing ports 3 are provided. Reference numeral 5 denotes a blower that pressurizes air outside the apparatus and ejects the air from the injection nozzle 4 to the cleaning tank 1 and has a centrifugal impeller driven by a motor that rotates at high speed. Reference numeral 6 denotes an intake port for taking air into the blower 6, and 7 is an exhaust port for discharging air from the cleaning tank 1. 8 is a drainage path for discharging washing water to the outside of the machine, 8a is a valve body for opening and closing the drainage path 8, 8b is a drain port for taking in the washing water at one end of the drainage path 8, and 9 is a washing water at the bottom of the washing tank 1. It is a drainage filter that filters dirt.
[0019]
Next, the operation will be described. First, it is assumed that an object to be cleaned such as tableware is stored in the tableware basket 2 and mounted in a predetermined position of the cleaning tank 1 and a switch (not shown) is turned on. When the operation is started after the switch is turned on, first, a water supply step of supplying a predetermined amount of cleaning water to the cleaning tank 1 is executed. The washing water is supplied until the air blowing hole 3 of the injection nozzle 4 is submerged. Subsequently, when the blower 5 is operated, the air taken in from the intake port 6 and pressurized by the blower 5 is jetted upward from the blower hole 3 toward the object to be cleaned in the tableware basket 2.
[0020]
At this time, as shown in FIG. 2, the cleaning water containing the detergent is blown off by a high flow rate of high-speed air, and becomes water droplets and jetted toward the object to be cleaned together with the high-speed air. The cleaning water collides with the object to be cleaned at high speed, cleans the object to be cleaned by the collision force and the decomposition force of the detergent, and the air is exhausted from the exhaust port 7 to the outside of the machine. Here, fine dirt with a light weight is discharged out of the apparatus together with air, but other dirt falls to the bottom of the cleaning tank 1. In this way, the main washing process using a detergent is performed.
[0021]
After the main washing process for a predetermined time, the valve body 8a of the drainage path 8 is opened, and a draining process for discharging cleaning water containing dirt washed away from the object to be washed out of the apparatus is started. Dirt in the wash water is collected by the drainage filter 9. Subsequently, a water supply process for supplying new cleaning water, a rinsing process for injecting air and cleaning water to rinse an object to be cleaned contaminated with a detergent, and a draining process are continuously performed, and the cleaning process is repeated four times. Ends.
[0022]
Then, the drying process which blows off and evaporates the water droplet which sent air into the washing tank 1 with the air blower 5 from the outside of the machine, and adhered to the to-be-cleaned object is performed. In this drying step, since the blower 5 is operated with the valve body 8a opened, moisture is discharged not only to the exhaust port 7 but also to the drainage path 8, and the path is also dried. Therefore, excess cleaning water does not remain in each part of the cleaning machine, and a clean cleaning machine can always be provided.
[0023]
As described above, predetermined cleaning performance and drying performance can be obtained with a simple cleaning / drying mechanism having the blower 5 and the valve body 8a. Further, the cleaning / drying mechanism is compact, and even a cleaning machine having the same outer size has a large storage capacity.
[0024]
(Example 2)
The basic structure of the mechanical parts is the same as that of FIG. 1 and will not be described. In FIG. 3, instead of the first means described above, a drainage pump 10 that pressurizes and drains cleaning water, and a cleaning tank 1, a circulation air passage 11 connecting the blower 5 and the injection nozzle 4 is provided. Reference numeral 12 denotes an intake port through which the circulation air passage 11 is connected to the cleaning tank 1, and 13 is a baffle plate provided to face the intake port 12.
[0025]
Next, the operation will be described. Since the basic operation related to the cleaning process is the same as that of the first embodiment, the characteristic operation will be described.
[0026]
In the cleaning process, air pressurized by the blower 5 is jetted from the blow hole 3 toward the object to be cleaned. At this time, the washing water at the bottom of the washing tank is also blown away by the high-speed air and is jetted together with the high-speed air toward the object to be cleaned. The cleaning water collides with the object to be cleaned and removes the dirt as in the first embodiment.
[0027]
However, since it is configured to provide a circulation air passage that connects the cleaning tank, the blower, and the injection nozzle, the air and the cleaning water injected into the cleaning tank 1 are guided to the intake port 12 by the suction of the blower 5. The Further, large water droplets in the wash water are dropped by the baffle plate 13 being prevented from entering the air inlet 12. Wash water or air that passes through the baffle plate 13 while being bent passes through the circulation air passage 11 from the air inlet 12, is pressurized by the blower 5, and is again injected from the injection nozzle 4. Accordingly, since the cleaning water circulates through the circulation air passage 11 in the cleaning process, it is hardly discharged outside the apparatus. In this way, a cleaning method can be used in which the same cleaning water is circulated. That is, it has the effect of washing with a small amount of washing water.
[0028]
In addition, since the drainage pump is provided in the drainage path, the drainage pump 10 can effectively work. That is, since the drainage pump 10 has a function of pressurizing and draining the washing water, fine dirt in the washing water can be reliably discharged together with the drainage flow having a constant speed in the drainage process.
[0029]
Therefore, since a phenomenon in which fine dirt accumulates or remains in the washing tank and the bottom thereof and is recirculated in the rinsing process hardly occurs, more effective rinsing is performed. Therefore, by reducing the amount of water per rinsing and rinsing process, a water-saving washing machine with a greatly reduced amount of water used can be obtained.
[0030]
Example 3
The basic structure of the mechanical parts is the same as that of FIG. 3 and will not be described. In FIG. 4, instead of the means of the above-described second embodiment, the circulation connecting the cleaning tank 1, the blower 5, and the injection nozzle 4 is performed. The air passage 14 is branched into a first air passage 15 connected to the cleaning tank 1 and a second air passage 16 that takes in air outside the machine. A switching valve 17 that opens and closes a branch portion between the first ventilation path 15 and the second ventilation path 16 is provided. Further, 18 is a valve drive device that rotates the switching valve 17 by a predetermined angle.
[0031]
Next, the operation will be described. Since the basic operation related to the cleaning process is the same as that of the first embodiment, the characteristic operation will be described.
[0032]
First, in the cleaning process, the switching valve 17 is rotated by the valve driving device 18 to open the first ventilation path 15 and close the second ventilation path 16 to operate the blower 5. The air pressurized by the blower 5 is jetted from the blower hole 3 toward the object to be cleaned. At this time, the washing water is also blown away by this high-speed air and jetted toward the object to be cleaned. Washing water and air pass from the first air passage 15 through the circulation air passage 14, are pressurized by the blower 5, are ejected from the ejection nozzle 4, repeatedly collide with the object to be cleaned, and remove dirt. Therefore, the cleaning water is not discharged outside the apparatus in the cleaning process, and can be cleaned with a small amount of cleaning water, as in the second embodiment.
[0033]
Furthermore, in the drying process of the third embodiment, the blower 5 is operated by rotating the switching valve 17 to close the first ventilation path 15 and opening the second ventilation path 16. In this drying process, outside air is taken in from the second ventilation path 16 and is blown to the cleaning tank 1 by the blower 5. The humid air inside the cleaning tank 1 is forcibly exhausted from the exhaust port 19.
[0034]
The blower 5 has an ability to blow off the wash water, and there is room for both the air volume and the wind pressure in the drying process without the wash water. That is, it is possible to dry in a short time by letting high-speed air pass through the cleaning tank 1 and draining water droplets adhering to the object to be cleaned, as well as discharging moisture from the exhaust port 19. In other words, in addition to saving water, the washing machine has excellent drying performance.
[0035]
(Example 4)
The basic structure of the mechanical parts is the same as that of FIG. 1 and will not be described. However, a drain pump 20 is provided as shown in FIG. 5, and the drain pump 20 is formed in a vortex type as shown in FIG. is there.
[0036]
In the cleaning process, air pressurized by the blower 5 is jetted from the blow hole 3 toward the object to be cleaned. At this time, the cleaning water is also blown off by the high-speed air and sprayed toward the object to be cleaned. Air taken in from the intake port 6 and pressurized by the blower 5 is jetted from the blow hole 3 toward the object to be cleaned. At this time, the cleaning water is also blown away by the high-speed wind, and is sprayed toward the object to be cleaned as water droplets. The cleaning water collides with the object to be cleaned at high speed, removes dirt, and the air is exhausted from the exhaust port 7 to the outside of the apparatus as in the first embodiment.
[0037]
Since the air pressure inside the washing tank 1 is increased in this washing step, the washing water at the bottom is pushed out in the direction of discharging outside the apparatus. However, when the drainage pump 20 is formed in a vortex type and is operated by reversing the drainage pump 20 in the washing process, the vortex type feature acts in the direction of drawing the washing water from the drainage path. Therefore, even when the blowing capacity of the blower 5 is increased, there is an effect of suppressing the washing water from flowing out of the drainage path outside the machine. That is, in this embodiment, even if the blowing capacity of the blower 5 is increased, the washing process can be executed stably, so that a higher washing power can be obtained.
[0038]
In addition, the two motors of the blower 5 and the drainage pump 20 can be configured by one motor, and are configured such that the rotation direction of the motor at the time of cleaning is opposite to the rotation direction at the time of drainage. If there is, the same effect can be obtained.
[0039]
(Example 5)
The basic structure of the mechanical parts is the same as that of FIG. 1 and will not be described. However, as shown in FIG. 7, a heater 21 is provided inside the injection nozzle 4.
[0040]
By energizing the heater 21, air is mainly heated during cleaning, but heat is exchanged between the warm air and the cleaning water inside the cleaning tank 1 to heat it. That is, the cleaning temperature is increased and the cleaning power is improved. In the drying step, air is heated to generate hot air and supply energy for evaporating water droplets attached to the object to be cleaned, so that drying can be performed in a shorter time. As described above, the heater 21 can improve the cleaning performance by heating the cleaning water, and can improve the drying performance by heating the outside air and blowing the warm air in the drying process. It is shortened.
[0041]
The heater 21 may be provided in an air path such as the inside of the blower 5 or the circulation air passage 14.
[0042]
In addition, since the amount of water used for washing water is small compared to conventional dishwashers, the temperature rises in a short time. As a result, the cleaning power can be increased, the operation time can be shortened, and the capacity of the heater 21 can be reduced.
[0043]
(Example 6)
The basic structure of the mechanical parts is the same as that of FIG. 4 and the description thereof is omitted. However, in FIG. 8, a washing machine without an exhaust port and a drain pump is used, as in the conventional washing machine.
[0044]
The operation of the cleaning process is basically the same as that of the third embodiment. Next, for drainage, the switching valve 17 is operated to close the first ventilation path 15 and open the second ventilation path 16. When the blower 5 is actuated, outside air is taken in from the second ventilation path, and this air is pressurized and blown to the cleaning tank 1. Then, the air pressure in the cleaning tank 1 is increased, and the cleaning water is pumped to the drainage path. The drainage path once rises to a height at which it is not drained by the internal pressure that is increased in the cleaning tank 1 in the cleaning process, and forms a rising portion 8c.
[0045]
By closing the first ventilation path 15 and opening the second ventilation path 16, the internal pressure of the cleaning tank 1 is sufficiently increased by the pressurized air, and the washing water can be discharged out of the machine from the drainage path. . In the subsequent drying step, the object to be cleaned can be dried by maintaining this state. In such a configuration, it goes without saying that the drying performance is improved by providing a heater in at least one of the blower, the injection nozzle, and the circulation air passage to blow hot air.
[0046]
Further, in the drainage process of this configuration, as the driving method of the blower 5, in which the air blower 5 feeding can be stopped in the middle of the drainage process.
[0047]
That is, when the washing water is pumped up to the bent rising portion 8c of the drainage path and naturally flows down on the tip side, the drainage is performed by the so-called siphon effect even after the blower 5 is stopped. Unlike other conventional washing machines, there is no operation of a mechanism unit such as a drain pump or a switching valve. Therefore, it realizes quiet drainage with little residual water. Therefore, it becomes a clean washing machine which does not generate smell or mold. In addition, it is possible to provide a highly durable cleaning machine that does not accumulate foreign matter or dirt.
[0048]
In some of the embodiments described above, the spray nozzle is fixed at the bottom of the cleaning tank, but it goes without saying that it may rotate as in the case of a conventional cleaning machine.
[0049]
【The invention's effect】
Since this invention is comprised as mentioned above, it has an effect as described below.
[0050]
According to the first aspect of the present invention, a cleaning tank for storing an object to be cleaned, an injection nozzle having an air blowing hole disposed at the bottom of the cleaning tank for storing cleaning water, and a blower for sending air to the injection nozzle And a drainage path for discharging the cleaning water to the outside of the machine, and a drainage pump for discharging the cleaning water, the cleaning water is supplied to the cleaning tank so that the air blowing hole of the injection nozzle is submerged, and at the time of cleaning, The air pressurized by the blower is jetted upward from the blower hole toward the object to be cleaned, and the washed water blown off is sprayed onto the object to be cleaned and is pressurized by the fan during drying. Since the air is ejected from the spray nozzle onto the object to be cleaned, cleaning and drying can be performed with a single blower, and a simple cleaning and drying mechanism can be realized.
[0051]
According to the invention of claim 2, wherein the present invention, the the cleaning tank and the blower jet nozzle because providing the circulating air flow passage and connected to circulate the air of the cleaning tank, circulating the circulation path, repeating the washing It can be sprayed onto the object, and a washing machine excellent in water saving and energy saving can be realized .
[0052]
According to invention of Claim 3 of this invention, while branching one end of the circulation ventilation path into the 1st ventilation path connected in the washing tank, and the 2nd ventilation path which takes in the air outside a machine, the said 1st Since the switching valve for switching between the first ventilation path and the second ventilation path is provided, a washing machine with excellent drying performance can be realized .
[0053]
According to the fourth aspect of the present invention of the present invention, the drainage pump is thereby formed with swirl, it is so arranged to drive by reversing the drain pump in the washing step, the washing water in the washing process reliably cleaned Since it can be sealed in the tank, it can be washed with less washing water .
[0054]
According to the invention described in claim 5 of the present invention, since the heater is provided in at least one of the blower, the injection nozzle, and the circulation air passage , the washing water and the air can be heated to an appropriate temperature. A washing machine with high drying performance can be realized .
[Brief description of the drawings]
FIG. 1 is a main part configuration diagram of a cleaning machine according to a first embodiment of the present invention. FIG. 2 is a main part configuration diagram showing a cleaning process of the cleaning machine. FIG. 4 is a block diagram of the main part of the cleaning machine in Embodiment 3 of the present invention. FIG. 5 is a block diagram of the main part of the cleaning machine in Embodiment 4 of the present invention. Main part configuration diagram [FIG. 7] Main part configuration diagram showing the heater of the washing machine in the fifth embodiment of the present invention [FIG. 8] Main part configuration diagram of the cleaning machine in the sixth embodiment of the present invention [FIG. 9] Conventional dishwashing Main part configuration diagram of dryer [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Washing tank 2 Tableware basket 3 Blower hole 4 Injection nozzle 5 Blower 8 Drainage path 10 Drainage pump 11 Circulation ventilation path 12 Inlet 13 Baffle plate 15 1st ventilation path 16 2nd ventilation path 17 Switching valve 21 Heater

Claims (5)

A cleaning tank for storing an object to be cleaned, an injection nozzle having a ventilation hole disposed at the bottom of the cleaning tank for storing cleaning water, a blower for sending air to the injection nozzle, and a drainage path for discharging the cleaning water to the outside And a drainage pump for discharging the cleaning water, and the cleaning water is supplied to the cleaning tank so that the air blowing hole of the injection nozzle is submerged, and at the time of cleaning, the air pressurized by the blower is covered from the air blowing hole. The cleaning water sprayed upward toward the cleaning object and sprayed off as water droplets is sprayed onto the object to be cleaned, and at the time of drying, air pressurized by the blower is sprayed from the spray nozzle to the object to be cleaned. as in the washing machine.   The washing machine according to claim 1, wherein a circulation air passage is provided by connecting the washing tank, the blower, and the injection nozzle so as to circulate the air in the washing tank. One end of the circulation air passage, a first air passage connected to the cleaning tank and with branches into the second air passage for taking in the outside air, switches the second air passage and said first air passage The washing machine according to claim 2, further comprising a switching valve. With drain pump is formed by swirl, washing machine of claim 1, wherein the to be driven by reversing the drain pump in the washing step. The washing machine according to claim 2 or 3 , wherein a heater is provided in at least one of the blower, the injection nozzle, and the circulation blower passage.

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