JP3001496U - Dishwasher - Google Patents

Abstract

(57) [Summary] [Purpose] To reliably wash off debris from the wall of the water level detection chamber and the float to prevent malfunction of the float due to accumulation of debris, generation of offensive odor, and propagation of bacteria. [Composition] A water supply passage 63 is provided close to the upper part of the wall surface in the water level detection chamber 46, and water to be supplied into the cleaning chamber 3 flows from the outlets 64, 65 of the water supply passage toward the wall surface. Further, the second communication port 6 having a horizontally long slit shape is formed on the wall between the cleaning chamber and the water level detection chamber.
9 is provided to guide the wash water traveling along the wall surface on the side of the washing chamber to the wall surface on the side of the water level detecting chamber through the eaves 70 extending further from the second communication port to the side of the water level detecting chamber, and wash this wall surface. Further, a part of the wash water discharged from the wash pump 14 is connected to a water outlet 6 provided on the top surface of the water level detection chamber by a connection hose 62.
1, the cleaning water discharged from the water discharge port is further branched by the flow dividing rib 68, and is radiated to the predetermined and abnormal floats 50 and 51.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 According to the present invention, water is supplied from a water supply source to a washing room accommodating dishes, and the water accumulated in the washing room is sent to a washing nozzle by a washing pump and sprayed from the washing nozzle to the dishes to wash the dishes. The present invention relates to a dishwasher for washing and rinsing.

[0002]

[Prior art]

 Conventionally, in this type of dishwasher, there is one in which a float is arranged in a water level detection chamber which is separately provided from the cleaning chamber, and the float is interlocked with the water level in the cleaning chamber to detect the water level. However, in such a dishwasher, food debris dropped from the dishes during cleaning enters the water level detection chamber, and after cleaning, the debris adheres to the indoor wall surface and float and remains. It was sometimes accumulated.

Therefore, the weight of the float itself changes depending on the accumulated debris, and the accurate water level cannot be detected, or the debris accumulated on the wall surface and the debris accumulated on the float are fixed and the float is fixed. There was a problem that it stopped working properly.

Further, there is a possibility that it may cause an offensive odor or may cause various bacteria to propagate.

On the other hand, as disclosed in, for example, Japanese Patent Laid-Open No. 26524/1990 (A47L15 / 42), first, water is supplied into a water supply chamber adjacent to the water level detection chamber, and this water is passed through the water level detection chamber. There is a system in which the bottom of the detection chamber is washed away by introducing it from the inside into the washing chamber.

[0006]

[Problems to be solved by the device]

 However, in the water level detection chamber and the float, it is particularly the portion above the water surface during cleaning and rinsing that tends to accumulate debris.

[0007] This is because the debris attached to the portion below the water surface is not easily left because it is easily washed away during drainage. This is because, if it adheres to the upper part, such debris will not be washed away and will remain as it is during drainage. And, as shown in FIG. 11, such debris will be deposited on the top and sideways in due course.

However, in the case of the above-mentioned dishwasher, since water spreads only near the bottom of the water level detection chamber, it is above the water surface at the time of cleaning and rinsing as described above, especially the accumulation of dust. I couldn't wash away the bad part.

The present invention solves such a problem, and reliably removes the debris on the wall of the float or the water level detection chamber, and the malfunction of the float due to the accumulation of the debris, the generation of a strange odor, and the contamination of bacteria. The purpose is to prevent breeding.

[0010]

[Means for Solving the Problems]

 According to the configuration of claim 1 of the present invention, water is supplied from the water supply source to the washing chamber containing the dishes, the water accumulated in the washing chamber is sent to the washing nozzle by the washing pump, and the washing nozzle sprays the dishes on the dishes. In the dishwasher for washing and rinsing dishes, the washing chamber is provided separately from the washing chamber, and the water level detecting chamber communicating with the washing chamber at a lower position and the water level detecting chamber are arranged, A float that interlocks with changes in the water level in the cleaning chamber, a water level detection unit that detects the predetermined water level in the cleaning chamber by raising the float, and an upper part of the water level detection chamber close to the wall surface of the water level detection chamber. The water supply channel provided, the water supply pipe connecting the water supply channel and the water supply source, and the water provided in the water supply channel and flowing into the water supply channel from the water supply source through the water supply channel to the water level detection unit For indoor wall surfaces An outlet for discharging the water, a connection pipe connected to the cleaning pump for guiding water discharged from the cleaning pump to the water level detection chamber, and a connection pipe provided on the top surface of the water level detection chamber and connected to the connection pipe. And a water discharge means for radiating the water sent from the cleaning pump to the float.

According to a second aspect of the present invention, water is supplied from a water supply source to a washing chamber accommodating dishes, the water accumulated in the washing chamber is sent to a washing nozzle by a washing pump, and the dishes are discharged from the washing nozzle. In a dishwasher for washing and rinsing dishes by spraying it on the objects, a water level detection chamber provided adjacent to the lower part of one wall of the cleaning chamber, and the cleaning chamber and the water level detection chamber at the lower position. First communication port that communicates with each other, a float that is arranged in the water level detection chamber and that interlocks with changes in the water level in the cleaning chamber, and a water level detection that detects a predetermined water level in the cleaning chamber by raising the float. Means, an upper part of the water level detection chamber, a water supply channel provided near the wall surface in the water level detection chamber, a water supply pipe connecting the water supply channel and the water supply source, and the water supply channel, Water is supplied from the water supply source through the water supply pipe. It is provided at an outlet that discharges water that has flowed into the water channel toward the wall surface inside the water level detection chamber, and a position between the water level detection chamber and the cleaning chamber that is above the water level detection chamber. A second communication port that communicates with the chamber, and an eave that is formed from an upper edge portion of the second communication port and projects toward the water level detection chamber side to cover the second communication port.

According to a third aspect of the present invention, water is supplied from a water supply source to a washing chamber accommodating dishes, the water accumulated in the washing chamber is sent to a washing nozzle by a washing pump, and the dishes are discharged from the washing nozzle. In a dishwasher for washing and rinsing dishes by spraying it on the objects, a water level detection chamber provided adjacent to the lower part of one wall of the cleaning chamber, and the cleaning chamber and the water level detection chamber at the lower position. First communication port that communicates with each other, a float that is arranged in the water level detection chamber and that interlocks with changes in the water level in the cleaning chamber, and a water level detection that detects a predetermined water level in the cleaning chamber by raising the float. Means, a second communication port that is provided at a position above the water level detection chamber on the wall between the water level detection chamber and the cleaning chamber, and connects the two chambers, and an upper edge of the second communication port. Part of the water level detection chamber and extends to the water level detection chamber side. Two eaves covering the two communication ports, a connection pipe connected to the cleaning pump for guiding water discharged from the cleaning pump to the water level detection chamber, and the connection pipe provided on the top surface of the water level detection chamber. And a water discharge means for irradiating the float with water sent from the cleaning pump.

According to the configuration of claim 4 of the present invention, water is supplied from a water supply source to the washing chamber accommodating the dishes, and the water accumulated in the washing chamber is sent to the washing nozzle by the washing pump, and the washing nozzle discharges the dishes. In a dishwasher for washing and rinsing dishes by spraying it on the objects, a water level detection chamber provided adjacent to the lower part of one wall of the cleaning chamber, and the cleaning chamber and the water level detection chamber at the lower position. First communication port that communicates with each other, a float that is arranged in the water level detection chamber and that interlocks with changes in the water level in the cleaning chamber, and a water level detection that detects a predetermined water level in the cleaning chamber by raising the float. Means, an upper part of the water level detection chamber, a water supply channel provided near the wall surface in the water level detection chamber, a water supply pipe connecting the water supply channel and the water supply source, and the water supply channel, Water is supplied from the water supply source through the water supply pipe. It is provided at an outlet that discharges water that has flowed into the water channel toward the wall surface inside the water level detection chamber, and a position between the water level detection chamber and the cleaning chamber that is above the water level detection chamber. A second communication port that communicates with the chamber, and an eave that is formed from the upper edge of the second communication port and projects to the water level detection chamber side to cover the second communication port, and is connected to the cleaning pump. A connection pipe for guiding the water discharged from the cleaning pump to the water level detection chamber, and a water pipe sent from the cleaning pump to the float, which is provided on the top surface of the water level detection chamber and connected to the connection pipe. It is equipped with radiating water discharge means.

According to a fifth aspect of the present invention, in the structure according to the second or fourth aspect, the water supply passage is provided in a portion other than the wall surface of the wall between the water level detection chamber and the cleaning chamber. It is provided close to the wall surface of one wall.

[0015]

[Action]

 Water from the water supply source supplied to the cleaning room flows out from the outlet of the water supply channel provided at the upper part of the water level detection room, rinses the wall surface in the room, and then flows into the cleaning room. In other words, since the wall surface in the water level detection chamber is flushed from the top, not only the waste near the bottom of the wall but also the waste deposited on the portion above the water surface during washing and rinsing, where dust is likely to accumulate. Is also washed away.

[0016] Further, the cleaning water (rinsing water) sprayed from the cleaning nozzle at the time of cleaning and rinsing and hitting the wall surface of the cleaning chamber travels along the wall surface and collects again at the bottom. At this time, in the wall adjacent to the water level detection chamber, the cleaning water that has propagated along the wall surface on the side of the cleaning chamber is transmitted to the water level detection chamber side from the upper edge of the second communication port by the eaves due to surface tension. Get burned. Then, at the end of the eaves, it moves to the wall on the detection chamber side and flows along this wall. In this way, since this wall surface is washed away from the upper portion, the debris attached to the portion above the water surface during washing and rinsing, where debris is likely to accumulate, is also washed away.

Furthermore, when the cleaning pump operates during cleaning and rinsing, the cleaning water (rinsing water) is sent to the cleaning nozzle, and part of it is sent to the water level detection chamber via the connecting pipe, and the water is discharged from the float to float. Radiate to. As a result, the float is washed and the debris adhering to the float is washed away.

[0018]

【Example】

 An embodiment of the present invention will be described with reference to the drawings.

1 to 9, reference numeral 1 denotes a dishwasher / dryer which is an embodiment of the dishwasher of the present invention. Reference numeral 2 is a machine frame of the dishwasher / dryer 1, and 3 is a cleaning / drying room (hereinafter referred to as a cleaning room) provided in the machine frame 2. The cleaning chamber 3 is formed by joining a lower opening resin upper case 3a and an upper opening resin lower case 3b by heat welding or the like. The dishes to be washed are stored in the washing chamber 3 in a state of being stored in a dish basket (not shown).

Reference numeral 4 denotes a tableware inlet provided on the front surface of the cleaning chamber 3, and reference numeral 5 denotes a door for opening and closing the inlet 4, the lower end of which is supported and opened to the front. Reference numeral 6 denotes an operation panel provided on the lower front portion of the machine frame 2, that is, below the door 5. Reference numeral 7 denotes a control box attached to the back surface of the operation panel 6, which accommodates electrical components such as a microcomputer (described later), which is the center of the control mechanism of the dishwasher / dryer 1.

Reference numeral 8 denotes a hollow nozzle arm rotatably supported at the center of the bottom of the cleaning chamber 3, and a jet port 9 is opened on the upper surface at a predetermined angle. The nozzle arm 8 corresponds to the cleaning nozzle of the present invention.

A drainage tank 10 is formed in front of the bottom of the cleaning chamber 3, and a circulation port 11 and a drainage port 12 are opened at the lower portion of the side surface. Reference numeral 13 is a filter arranged on the upper surface of the drainage tank 10 to remove the residual vegetables that have flowed down from the tableware. A cleaning pump 14 is attached to the outer bottom of the cleaning chamber 3.

The cleaning pump 14 includes a pump motor 15, an impeller 16 attached to the motor 15, and a casing 17 surrounding the impeller 16. In the casing 17, a suction port 18 is provided at the center of the front surface 17a, and a first discharge port 19 is provided at a position above the impeller 16 on the peripheral surface 17b. Further, a second discharge port 20 is provided at the position of the peripheral portion of the front surface 17a. At present, the second discharge port 20 is provided at the lower end portion of the front surface of the casing 17, but it may be at a peripheral portion other than the lower end portion.

The suction port 18 is connected to the circulation port 11 of the drainage tank 10 via a connection pipe 21, and the first discharge port 19 is connected to the nozzle arm 8. Further, the second discharge port 20 is connected to a water discharge port of a water level detection chamber described later via a connection hose 62 (corresponding to a connection pipe of the present invention).

Since the discharge pressure generated by the rotation of the impeller 16 is large in the normal direction of the peripheral surface 17b of the casing 17, water is strongly fed from the first discharge port 19 to the nozzle arm 8. On the other hand, the peripheral edge of the front surface 17a of the casing 17 having the second discharge port 20 receives a pressure that laterally escapes by hitting the peripheral surface 17b of the casing 17, so that the pressure is weaker than the normal direction of the peripheral surface 17b. . Therefore, the water is not so strongly sent from the second discharge port 20 to the water discharge port.

Reference numeral 23 is a drainage pump attached to the outer bottom portion of the cleaning chamber 3, and its suction port is connected to the drainage port 12 of the drainage tank 10 via a connection hose 24. Reference numeral 25 is a drain hose connected to the discharge port of the drain pump 23 described above. During drainage, the wash water and rinse water are discharged through the drain hose 25 by the operation of the drain pump 23.

Reference numeral 26 denotes a loop-shaped sheathed heater that is provided from near the center of the bottom of the cleaning chamber 3 to the rear, warms the cleaning water and rinse water, and raises the temperature inside the cleaning chamber 3 during drying, It enhances the drying effect.

Reference numeral 27 denotes a lead-out port formed at one upper side of the rear wall of the cleaning chamber 3, and 28 denotes an inlet port also formed at the lower center of the rear wall of the cleaning chamber 3. 29 is a circulation air passage provided at the rear of the cleaning chamber 3 and connecting the outlet 27 and the inlet 28. The circulation air passage 29 is formed by bending a path extending downward from the outlet 27 so as to stand up, a fan casing 31 connected to the U passage 30, and a fan casing 31. It comprises an introduction duct 32 connecting to the introduction port 28. A drain hole 33 is formed at the bottom of the U-shaped passage 30 and is connected to the cleaning chamber 3. Reference numeral 34 denotes a disk-shaped double-sided fan arranged in the fan casing 31, and has blades 34a at the peripheral portions of the front and rear surfaces. Reference numeral 35 is a fan motor for driving the double-sided fan.

A partition plate 36 covers the U-shaped passage 30 and the fan casing 31 except for the rear surface of the double-sided fan 34. A corrugated heat radiating fin 37 is formed in a substantially central upper portion of a portion of the partition plate 36 that covers the U-shaped passage 30.

Reference numeral 38 is a rear plate that covers the rear surface of the machine casing 2. A seat push 39 is formed on the rear face plate 38 along the outer shape of the partition plate 36 except for the lowermost portion of the U-shaped path 30 so as to be in contact therewith. A cooling air passage 40 is formed behind the circulation air passage 29 by partitioning the partition plate 36 and the rear plate 38 with the seat push 39.

Reference numeral 41 denotes a porous intake port formed in the rear plate 38 so as to face the double-sided fan 34. Reference numeral 42 denotes an exhaust port provided at a portion corresponding to the bulging step portion 22 formed on the rear portion of the bottom surface of the machine frame 2 and the lowermost portion of the U-shaped passage 30. Thus, when the double-sided fan 34 rotates, air is circulated between the cleaning chamber 3 and the circulation air passage 29, and outside air is taken into the cooling air passage 40 from the intake port 41 and discharged from the exhaust port 42. .

The high temperature and high humidity air guided from the outlet 27 of the cleaning chamber 3 into the circulation air passage 29 is heat-exchanged by the partition plate 36 cooled by the outside air when passing through the U-shaped passage 30. Water in the air is condensed and removed. Here, in particular, the heat-radiating fins 37 provided in the U-shaped passage 30 improve the heat exchange effect. Furthermore, when the air exiting the U-shaped passage 30 passes through the fan casing 31, the air is also heat-exchanged by the double-sided fan 34 to remove water. The dew condensation water generated in the U-shaped passage 30 is returned to the inside of the cleaning chamber 3 through the drain hole 33 at the lowermost portion, and the dew condensation water generated in the fan casing 31 passes from the introduction port 32 through the introduction duct 32. It is returned to the washing room 3.

Reference numeral 43 is integrally formed with the lower case 3 b, and a rear chamber adjacent to a lower portion of a rear wall of the cleaning chamber 3 has an upper opening. The rear chamber 43 is partitioned by a partition wall 44 into a water supply chamber 45 and a water level detection chamber 46.

Reference numeral 47 denotes a water supply port which is provided at a lower position of the water supply chamber 45 and which connects the water supply chamber 45 and the cleaning chamber 3, and 48 denotes a water supply port which is provided at a lower position of the water level detection chamber 46. The first communication port connects the cleaning chamber 3 with the cleaning chamber 3. A rectifying rib 49 is formed on the water supply port 47 and the first communication port 48 on the cleaning chamber 3 side.

Numerals 50 and 51 are a predetermined position float and an abnormal position float which are arranged side by side in the water level detection chamber 46, respectively. The predetermined position float 50 is for detecting the water level in the cleaning chamber 3 where normal cleaning and rinsing are performed. On the other hand, the extraordinary float 51 detects when the water level in the cleaning chamber 3 rises abnormally due to a failure of the predetermined float 50 or the like.

Reference numeral 52 is a top plate that covers the upper part of the rear chamber 43 (the water supply chamber 44 and the water level detection chamber 45). A lever 53 is rotatably supported by a holder 54 integrally provided on the upper surface of the top plate 52, and one end side 53a is connected to the predetermined position float 50. Reference numeral 55 is a micro switch mounted near the other end side 53b of the lever 53 of the holder 54. This micro switch 55 is turned on when the predetermined position of the float 50 is raised, the lever 53 is rotated, and the other end side 53b is pushed by pushing an operation knob (not shown) protruding from the switch body to wash the micro switch 55. Detects when the prescribed water level for rinsing is reached.

Reference numeral 56 is a reed switch attached to a holder 57 that is also integrally provided on the top surface of the top plate 52. When the abnormal position float 51 rises and reaches an abnormal water level, it is turned on to detect this.

The predetermined position float 50 and the abnormal position float 51 correspond to the float of the present invention, and the micro switch 55 and the reed switch 56 correspond to the water level detecting means of the present invention.

Reference numeral 58 is an inlet formed in the top plate 52 above the water supply chamber 45. A water supply hose 59 (corresponding to a water supply pipe of the present invention) connected to the inlet 58 is connected to an external water supply source via an electromagnetic water supply valve 60. Reference numeral 61 denotes a water discharge port formed between the predetermined position float 50 and the abnormal position float 51 of the top plate 52, and the second discharge port of the cleaning pump 14 via the connection hose 62 as described above. Connected to 20.

Reference numeral 63 is a water supply passage arranged above the water level detection chamber 46 by being attached to the lower surface side of the top plate 52. The water supply passage 63 includes three walls (a partition wall 44, a side wall 46b opposite to the partition wall, and a rear wall 46c) excluding the front wall 46a of the water level detection chamber 46 (the wall shared with the rear wall of the cleaning chamber 3). It is installed close to the wall surface of. Reference numeral 64 denotes an outlet that is opened at a plurality of positions on the bottom surface of the water supply passage 63 just above the partition wall 44, and 65 also indicates a bottom surface from a side surface of the water supply passage 63 facing the side wall 46b and the rear wall 46c. It is an outlet that has been opened in multiple places across.

Reference numeral 66 is a water storage chamber attached to the lower surface side of the top plate 52 so as to be located below the injection port 58. A water injection port 67 is provided on the bottom surface of the water storage chamber 66.

Although the water supply passage 63 and the water storage chamber 66 are integrally formed, the bottom surface of the water storage chamber 66 is located below the bottom surface of the water supply passage 63, that is, the water supply passage is provided above the water storage chamber 66. 63 is connected.

Reference numeral 68 denotes a triangular flow dividing rib formed from the side surface of the water supply passage 63 so as to be located in the vicinity of the outlet of the water discharge port 61. And the abnormal float 51 side. The diversion rib 68 and the water discharge port 61 constitute the water discharge means of the present invention.

Reference numeral 69 denotes a second slit-shaped second communication port provided at an upper position of the front wall 46 a of the water level detection chamber 46 from the end of the detection chamber 46 to the middle of the water supply chamber 45. Then, the cleaning chamber 3 and the water level detection chamber 46 are communicated with each other. The second communication port 69 is formed by preventing the end faces of the portions corresponding to the communication port 69 from being bonded to each other when the upper case 3a and the lower case 3b are bonded, that is, by forming a gap. It is a thing.

Reference numeral 70 denotes an eave which is formed from an upper edge portion 69 a of the second communication port 69 and projects toward the water level detection chamber 46 to cover the second communication port 69. The end 70a of this eave extends to a position below the lower edge of the communication port 69. Numeral 71 is a rib dispersed and interposed in three places so as to surely form a gap between the wall surface on the detection chamber 46 side and the eaves 70.

The water level (L) at the time of cleaning and rinsing detected by the predetermined float 50 is, of course, lower than the water supply passage 63 and the second communication port 69.

Next, FIG. 10 shows a control mechanism of the dishwasher / dryer 1. Reference numeral 72 denotes a microcomputer (hereinafter, referred to as a microcomputer) which is the center of the control mechanism, and is composed of a control unit 73, a storage unit 74 and the like.

Reference numeral 75 denotes an operation switch group including a setting switch and a start switch for setting various cleaning / drying operation courses. The operation switch group 75 is provided on the operation panel 6. A temperature detection circuit 76 includes a thermistor (not shown) arranged at the bottom of the cleaning chamber 3 and detects the temperature of the cleaning water and the rinse water and the temperature in the cleaning chamber 3. The operation switch group 75 and the temperature detection circuit 76 are connected to the input side (input port) of the microcomputer 72. A micro switch 55 and a lead switch 56 connected to the predetermined position float 50 and the abnormal position float 51 are also connected to the input side of the microcomputer 72.

Reference numeral 77 is a buzzer circuit for generating a buzzer sound, for notifying an abnormality. Reference numeral 78 denotes a display circuit, which displays the progress of the driving course and the like. The buzzer circuit 77 and the display circuit 78 are connected to the output side (output port) of the microcomputer 72.

Reference numeral 79 is a load drive circuit which is also connected to the output side of the microcomputer 72 and is composed of a triac or the like. A pump motor 80 of the cleaning pump 14, a pump motor 81 of the drainage pump 23, the fan motor 35, a water supply valve 60 and a heater 26 are connected to the output side of the load drive circuit 79 as loads. Then, the load drive circuit 79 turns on / off each load based on the output from the microcomputer 72.

The storage unit 74 of the microcomputer 72 stores rules for performing various processes corresponding to various inputs, reference data for various determinations performed in these processes, and the like. Then, the control unit 73 uses the rules and reference data in the storage unit 74 based on the inputs of the operation switch group 75, the micro switch 55, the temperature detection circuit switch 76, etc. 23, the operation of each load such as the water supply valve 60 is controlled.

Now, the operation based on the above configuration will be described. Here, in each drawing, the water flow at the time of water supply is shown by a solid line arrow, and the water flow at the time of washing and rinsing is shown by a one-dot chain line arrow.

When the start switch in the operation switch group 75 is pressed to start the cleaning / drying operation, first, water is supplied into the cleaning chamber 3. The water supply valve 60 is opened according to an instruction from the microcomputer 72, and the water from the water supply source, which is the wash water, flows into the water reservoir chamber 66 from the inlet 58 through the water supply hose 59. The water flowing into the water storage chamber 66 flows into the water supply chamber 45 from the water injection port 67 provided on the bottom surface of the chamber, and further passes through the water supply port 47 provided at the lower position of the water supply chamber 45 to wash the cleaning chamber 3 It flows in.

On the other hand, since the amount of water flowing out of the inlet 58 and the amount of water flowing out of the water inlet 67 is small, the water level in the water reservoir chamber 66 rises, and the overflow water flows to the water supply channel 63 connected at the top. Pour in. The water that has flowed into the water supply passage 63 is directed from the outlets 64 and 65 toward the respective wall surfaces of the both side walls 44 and 46b of the water level detection chamber 46 and the rear wall 46c (three wall surfaces excluding the wall surface of the front wall 46a). It flows out, these wall surfaces are washed out from the upper part, and flow into the cleaning chamber 3 through the first communication port 48 provided at the lower position of the detection chamber 46. As a result, even if debris adheres to these walls, they will be washed away.

In this way, when the water level in the cleaning chamber 3 reaches a predetermined water level for cleaning, the water supply valve 60 is closed according to the instruction of the microcomputer 72, and the water supply is completed. Then, the detergent contained in the cleaning chamber 3 in advance dissolves in the water supplied into the cleaning chamber 3, and this becomes the cleaning water.

Next, cleaning is performed. The washing pump 14 and the heater 26 operate according to an instruction from the microcomputer 72. The cleaning water stored at the bottom of the cleaning chamber 3 is heated by the heater 26, introduced into the nozzle arm 8 by the cleaning pump 14, and further disposed above the jet port 9 and above the nozzle arm 8. It is sprayed on tableware (not shown). Then, it collects again at the bottom of the cleaning chamber 3. In this way, the heated wash water is circulated and hung on the tableware, so that the dishes are cleaned.

At the time of cleaning, part of the cleaning water is sent from the second discharge port 20 of the cleaning pump 14 through the connecting hose 62 to the water discharge port 61 formed on the top surface of the water level detection chamber 46, and is discharged. The water is discharged from the water outlet 61 into the detection chamber 46. The wash water discharged from the water discharge port 61 is diverted by colliding with a flow dividing rib 68 provided in the vicinity of the outlet of the water discharge port 61, and divided into a predetermined position float 50 and an abnormal position float 51 and emitted. As a result, the upper surfaces and side surfaces of both floats 50, 51 are washed away. In this way, even if debris adheres to the upper and side surfaces of both floats 50 and 51, they are washed away.

Further, during cleaning, the microcomputer 72 controls the operation of the cleaning pump 14 in a cycle of ON for 28.5 seconds and OFF for 1.5 seconds to provide a rest period of the cleaning pump 14. As a result, the power of the cleaning water radiated to both floats 50 and 51 changes at the time of starting and stopping, so that the cleaning water does not always hit only a certain part of the float, but the cleaning water spreads over a wide area. You will be in good hands.

The cleaning water splashing on the floats 50, 51 also hits the wall surfaces in the water level inspection chamber 3 and also has the effect of washing the wall surfaces.

On the other hand, in the washing chamber 3, the washing water jetted from the jet port 9 of the nozzle arm 8 hits not only the dishes but also the respective wall surfaces in the chamber. Then, it flows down to the wall surface and collects again at the bottom of the room. At this time, the wall surface of the rear wall (the lower part of this rear wall shares the front wall of the water level detection chamber) and the water level detection chamber 46 The wash water flowing down along the adjacent side is guided to the water level detection chamber 46 side from the upper edge portion 69a of the second communication port 69 provided on the way, further along the eave 70 by surface tension. Then, at the terminal end 70a of the eaves 70, it moves to the wall surface on the detection chamber 46 side and flows along this wall surface, that is, the wall surface of the front wall 46a of the water level detection chamber 46 is washed from the upper part. As a result, even if dust adheres to this wall surface, it will be washed away.

Further, the cleaning water that has directly entered the second communication port 69 does not squirt into the water level detection chamber 46, but hits the eaves 70 at the exit portion toward the detection chamber 46 side, and this eaves 70 is ejected. It follows and flows to the wall surface of the detection room 46 side.

During this cleaning, heated cleaning water (that is, water containing detergent) is sprinkled on the wall surface in the water level detection chamber 3 and the floats 50 and 51, so that a particularly large cleaning effect is exhibited. .

When the cleaning is completed, the drainage pump 23 operates and the cleaning water is discharged from the cleaning chamber 3. After that, the water supply valve 60 is opened according to the instruction of the microcomputer 72, and new water (rinsing water) is supplied to the cleaning chamber 3. Supplied within. Also at this time, the wall surface in the water level detection chamber 46 is washed from the upper part, as in the case of water supply before cleaning.

When the water supply is completed, rinsing is subsequently performed. The washing pump 14 and the heater 26 operate according to an instruction from the microcomputer 72. As a result, the rinse water heated by the heater 26 is sprayed from the ejection port 9 of the nozzle arm 8 toward the tableware, and the tableware is rinsed.

At the time of rinsing, the wall surface in the water level detection chamber 46 and the floats 50, 51 are washed away as in the case of cleaning. Further, the microcomputer 72 also controls the operation of the cleaning pump 14 in a cycle of 28.5 seconds ON-1.5 seconds OFF.

Thus, when the rinsing is finished, the rinsing water is discharged from the cleaning chamber 3. Thereafter, according to an instruction from the microcomputer 72, the heater 26 and the double-sided fan 34 are operated to dry the tableware, and the operation for ending the drying is completed.

The intermittent operation control of the cleaning pump 14 by the microcomputer 72 may be performed only during cleaning or rinsing.

As described above, in the dish washer / dryer of this embodiment, the water supply passage is provided close to the upper part of the wall surface in the water level detection chamber, and the water supplied into the cleaning chamber is made to flow from this water supply passage toward the wall surface. Since it is guided into the washing room, the wall surface can be washed off from the top when water is supplied, and not only near the bottom of the wall surface, but also on the part above the water surface where washing and rinsing are likely to accumulate debris. The debris can be washed away.

In addition, since a water reservoir is provided at the outlet of the water supply hose so that the water from the water supply source is temporarily stored in the water reservoir and the overflowed water is caused to flow into the water supply channel, the water supply pressure is high. Even if the water flows vigorously from the pipe, the water can be dampened in the water reservoir. In addition, a water injection port is provided on the bottom surface of this water storage chamber, and water is also made to flow from this water injection port, so that the momentum of the water can be further reduced. Therefore, excessive water does not come out from the outlet of the water supply channel, and the float that is operating during water supply is not oscillated and the water level detection accuracy is not deteriorated.

A second communication port that connects the water level detection chamber and the cleaning chamber is provided at a position above the water level detection chamber on the wall between the cleaning chamber and the water level detection chamber, and the second communication port Forming an eave from the upper edge toward the water level detection chamber side to cover the second communication port, the cleaning water (rinsing water) that has propagated along the wall surface on the cleaning chamber side during cleaning and rinsing is directed to the wall surface on the detection chamber side. Since it is guided, this wall surface can be washed off from the top during washing and rinsing, and the debris attached to the portion where debris is likely to accumulate above the water surface during washing and rinsing can be washed out.

In particular, the water supply passage should be provided close to the wall surfaces of the three walls of the four walls of the water level detection chamber except the front wall that is shared with the rear wall of the cleaning chamber, and the front wall should be A second communication port is provided above it so that the wall surface can be washed off using wash water or rinse water. That is, since the water supply channel is arranged only in a necessary portion and the water channel is prevented from becoming long as much as possible, water can be sufficiently spread to the outlet at the end of the water supply channel.

Further, part of the washing water discharged from the washing pump during washing and rinsing is sent to the water discharge port provided on the top surface of the water level detection chamber, and the washing water discharged from the water discharge port is further branched. The diverted flow is radiated from above to the predetermined float and abnormal float arranged side by side in the detection chamber, so these floats can be washed during cleaning and rinsing, and the debris adhering to these floats can be washed away. be able to.

At this time, the second discharge port of the cleaning pump that sends the cleaning water to the water discharge port is provided at the peripheral portion of the front surface of the casing so that the water is not supplied to the water discharge port too strongly. The washing water is not radiated too strongly from the water, and the water does not leak out of the water level detection chamber from the joint part of the top plate.

In addition, the wash pump is operated intermittently to allow a rest period, and the momentum of the wash water emitted at the time of starting and stopping changes, so that the wash water always hits only a certain place of the float. It is possible to spread the wash water over a wide area instead of being present.

Therefore, in the dishwasher / dryer of the present embodiment, the dust on the wall of the water level detection chamber and the float can be washed off without fail, and the malfunction of the float due to the accumulation of dust, the generation of an offensive odor, and the contamination of bacteria. Breeding can be prevented.

[0076]

[Effect of device]

 According to the configuration of the dishwasher of the present invention, the wall surface in the water level detection chamber can be washed off from the upper part, and not only near the bottom of the wall surface, but also above the water surface during washing and rinsing, particularly where dust is likely to accumulate. It is possible to wash away the debris attached to the. Further, by flushing the float from above, it is possible to flush debris attached to the float.

Therefore, it is possible to reliably wash off the debris attached to the wall surface of the water level detection chamber and the float, and prevent malfunction of the float due to accumulation of debris, generation of a strange odor, and propagation of various bacteria.

Furthermore, according to the structure of claim 5, the water supply passage is close to the wall surfaces of the three walls of the four walls of the water level detection chamber except the wall shared with the cleaning room (shared wall). The common wall is provided with a second communication port on the upper part so that the wall surface can be washed away by using wash water or rinse water. That is, since the water supply channel is arranged only in a necessary part and the water channel is prevented from becoming long as much as possible, water can be sufficiently spread to the outlet at the end of the water supply channel.

[Brief description of drawings]

FIG. 1 is a side vertical sectional view showing an entire structure of a dishwasher / dryer according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of the vicinity of the cleaning pump showing the structure of the cleaning pump.

FIG. 3 is a rear view showing the structure of the circulation air passage with the rear plate removed.

FIG. 4 is a rear view showing the structure of the cooling air passages.

FIG. 5 is a rear vertical sectional view in the vicinity of the rear chamber showing the structure of the rear chamber (water supply chamber and water level detection chamber).

FIG. 6 is a plan view of the vicinity of the rear chamber with the top plate removed.

FIG. 7 is a side vertical sectional view of the vicinity of the rear chamber.

FIG. 8 is an enlarged view of a portion A of FIG.

FIG. 9 is a perspective view of the second communication port as seen from the cleaning chamber side.

FIG. 10 is a block diagram showing a control mechanism of the dish washer / dryer of the present embodiment.

FIG. 11 is a side vertical cross-sectional view of a water level detection chamber showing a state of accumulation of waste in the water level detection chamber of the conventional dishwasher.

[Explanation of symbols]

 3 Washing / Drying Room (Washing Room) 8 Nozzle Arm (Washing Nozzle) 14 Washing Pump 46 Water Level Detection Room 48 First Communication Port 50 Floating Position (Float) 51 Abnormal Position Float (Float) 55 Micro Switch (Water Level Detection Means) 56 Reed switch (water level detection means) 59 Water supply hose (water supply pipe) 61 Water discharge port (water discharge means) 62 Connection hose (connection pipe) 63 Water supply channel 64, 65 Outflow port 66 Water reservoir 67 Water injection port 68 Dividing rib (water discharge means) 69 Second communication port 70 Eaves 72 Microcomputer

Claims (5)

[Scope of utility model registration request] 1. A washing room containing dishes is supplied with water from a water supply source, the water accumulated in the washing room is sent to a washing nozzle by a washing pump, and sprayed from the washing nozzle to the dishes to wash the dishes. In a dishwasher for washing and rinsing, the water level detection chamber, which is provided separately from the cleaning chamber and communicates with the cleaning chamber at a lower position, is arranged in the water level detection chamber, and A float interlocked with the change, a water level detection means for detecting a predetermined water level in the cleaning chamber by the rise of the float, and a water supply channel provided in the upper part of the water level detection chamber in proximity to the wall surface in the water level detection chamber. , A water supply pipe connecting the water supply passage and the water supply source,
An outlet provided in the water supply passage for flowing out water flowing from the water supply source into the water supply passage through the water supply pipe toward the wall surface in the water level detection chamber, and connected to the cleaning pump. A connection pipe for guiding the discharged water to the water level detection chamber, and a water discharge provided to the top surface of the water level detection chamber and connected to the connection pipe to radiate the water sent from the cleaning pump to the float. A dishwasher, comprising: 2. A washing chamber containing dishes is supplied with water from a water supply source, and the water accumulated in the washing chamber is sent to a washing nozzle by a washing pump and sprayed from the washing nozzle to the dishes to wash the dishes. In a dishwasher for washing and rinsing, a water level detection chamber provided adjacent to a lower part of one wall of the cleaning chamber, and a first communication port that connects the cleaning chamber and the water level detection chamber at a lower position. A float that is arranged in the water level detection chamber and is interlocked with a change in the water level in the cleaning chamber, a water level detection unit that detects a predetermined water level in the cleaning chamber by the rise of the float, and an upper part of the water level detection chamber, A water supply passage provided near the wall surface in the water level detection chamber, a water supply pipe connecting the water supply passage and the water supply source, and a water supply passage provided in the water supply passage and passing from the water supply source through the water supply pipe. The water level flowing into the An outlet that flows out toward the inner wall surface, a second communication port that is provided at a position above the water level detection chamber on the wall between the water level detection chamber and the cleaning chamber, and that communicates the both chambers, Formed from the upper edge of this second communication port,
A dishwasher comprising: an eave protruding toward the water level detection chamber side to cover the second communication port. 3. A washing room containing dishes is supplied with water from a water supply source, the water accumulated in the washing chamber is sent to a washing nozzle by a washing pump, and sprayed from the washing nozzle to the dishes to wash the dishes. In a dishwasher for washing and rinsing, a water level detection chamber provided adjacent to a lower part of one wall of the cleaning chamber, and a first communication port that connects the cleaning chamber and the water level detection chamber at a lower position. A float disposed in the water level detection chamber and interlocked with a change in the water level in the cleaning chamber; water level detection means for detecting a predetermined water level in the cleaning chamber by raising the float; the water level detection chamber and the cleaning chamber Is formed at a position above the water level detection chamber on the wall between and, and is formed from a second communication port that connects the two chambers and an upper edge portion of the second communication port, and projects toward the water level detection chamber side. The eaves covering the second communication port with the cleaning port. Connection pipe for guiding the water discharged from the cleaning pump to the water level detection chamber, and a connection pipe provided on the top surface of the water level detection chamber and connected to the connection pipe, and sent from the cleaning pump. And a water discharge means for irradiating the float with water. 4. A washing room containing dishes is supplied with water from a water supply source, the water accumulated in the washing chamber is sent to a washing nozzle by a washing pump, and sprayed from the washing nozzle to the dishes to wash the dishes. In a dishwasher for washing and rinsing, a water level detection chamber provided adjacent to a lower part of one wall of the cleaning chamber, and a first communication port that connects the cleaning chamber and the water level detection chamber at a lower position. A float that is arranged in the water level detection chamber and is interlocked with a change in the water level in the cleaning chamber, a water level detection unit that detects a predetermined water level in the cleaning chamber by the rise of the float, and an upper part of the water level detection chamber, A water supply passage provided near the wall surface in the water level detection chamber, a water supply pipe connecting the water supply passage and the water supply source, and a water supply passage provided in the water supply passage and passing from the water supply source through the water supply pipe. The water level flowing into the An outlet that flows out toward the inner wall surface, a second communication port that is provided at a position above the water level detection chamber on the wall between the water level detection chamber and the cleaning chamber, and that communicates the both chambers, Formed from the upper edge of this second communication port,
An eave that projects toward the water level detection chamber and covers the second communication port,
A connection pipe that is connected to the cleaning pump and that guides the water discharged from the cleaning pump to the water level detection chamber, and a connection pipe that is provided on the top surface of the water level detection chamber and that is connected to the connection pipe and that is sent from the cleaning pump. A dishwasher, comprising: a water discharge means for radiating the water thus obtained to the float. 5. The water supply passage is provided close to the wall surfaces of three walls other than the wall surface between the water level detection chamber and the cleaning chamber. 4. The dishwasher according to 4.