CN114901898B

CN114901898B - Washing and drying integrated machine

Info

Publication number: CN114901898B
Application number: CN202080090487.0A
Authority: CN
Inventors: 本田靖
Original assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd; Aqua Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd; Aqua Co Ltd
Priority date: 2019-12-26
Filing date: 2020-11-26
Publication date: 2023-10-03
Anticipated expiration: 2040-11-26
Also published as: JP7411956B2; JP2021104215A; WO2021129302A1; CN114901898A

Abstract

The invention provides a washing and drying integrated machine, which comprises: a circulation path (20) connected to the washing drum (3); a water filter (30) having a tank (40) constituting a part of the circulation path (20); a temperature sensor (62) that detects the temperature of circulated air; and a control unit (60). The water filter (30) allows air in the circulation path (20) to pass through water in the container (40) to capture foreign matter from the air. When the detected value of the temperature sensor (62) in the drying operation is smaller than a first threshold value, the control unit (60) controls the flow of air in the circulation path (20) so that the air circulates so as not to pass through the water in the container (40). When the detected value of the temperature sensor (62) in the drying operation is equal to or greater than a second threshold value higher than the first threshold value, the control unit (60) controls the flow of air in the circulation path (20) so that the air circulates so as to pass through the water in the container (40).

Description

Washing and drying integrated machine

Technical Field

The invention relates to a washing and drying integrated machine.

Background

The washing and drying integrated machine described in patent document 1 below includes: the washing machine comprises an outer barrel for storing water, a roller which is arranged in the outer barrel and used for accommodating washings, and a circulating air duct. The circulation wind channel includes: an air inlet and an air outlet connected to the outer cylinder, and an air supply unit with a blower, a heater and a drying filter. In the drying operation, the air in the outer tube is circulated by the blower operation so as to be sucked into the circulation duct from the air inlet and flow into the outer tube from the air outlet. The circulated air is heated by the heater in the circulation duct. The laundry in the drum is dried by the heated air. The drying filter has a mesh-shaped filter element, and the filter element captures foreign matters contained in the air flowing through the circulation duct.

In the washing and drying integrated machine described in patent document 1, when the filter element of the drying filter is clogged, air cannot smoothly circulate in the drying operation, and therefore, it is assumed that there is a decrease in drying performance such as an increase in time and power consumption in the drying operation. Therefore, in order to prevent such a decrease in drying performance, the user needs to frequently detach the drying filter and clean it, and thus it is troublesome.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open publication No. 2011-244984

Disclosure of Invention

Problems to be solved by the invention

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a washing and drying integrated machine that improves usability in a drying operation and can suppress a decrease in drying performance.

Solution for solving the problem

The invention relates to a washing and drying integrated machine, which is characterized by comprising the following components: a washing drum for accommodating washings; a circulation path having a take-out port and a return port connected to the washing drum; an air supply unit configured to circulate air in the washing tub by taking the air out of the washing tub from the take-out port into the circulation path and returning the air from the return port into the washing tub; a heating unit for heating the circulated air; a water filter having a container constituting a part of the circulation path, wherein when water is stored in the container, air passing through the circulation path from the outlet port to the return port is allowed to pass through the water in the container, thereby capturing foreign matters from the air; a temperature sensor for detecting the temperature or the temperature variation of the circulated air; and a control unit that controls the air blowing unit and the heating unit to perform a drying operation or controls the flow of air circulating in the circulation path during the drying operation, wherein the control unit controls the flow of air in the circulation path so that the air does not pass through the water in the container when the detection value of the temperature sensor during the drying operation is smaller than a first threshold value, and controls the flow of air in the circulation path so that the air passes through the water in the container when the detection value of the temperature sensor during the drying operation is equal to or greater than a second threshold value higher than the first threshold value.

In the present invention, the circulating path is branched into a first branch path bypassing the container and a second branch path connected to the container, and the washing and drying integrated machine includes a switching unit that switches a flow of air in the circulating path so that the air in the circulating path flows through either the first branch path or the second branch path, and when a detection value of the temperature sensor during the drying operation is smaller than a first threshold value, the control unit switches the flow of air in the circulating path so that the air in the circulating path flows through the first branch path by controlling the switching unit, and when a detection value of the temperature sensor during the drying operation is equal to or higher than the second threshold value, the control unit switches the flow of air in the circulating path so that the air in the circulating path flows through the second branch path by controlling the switching unit.

In addition, the present invention is characterized in that the washing and drying integrated machine includes: an inflow path for flowing water into the container; an inflow valve for opening and closing the inflow path; an outflow path for flowing out water in the container; and an outflow valve that opens and closes the outflow path, wherein the control unit is configured to drain the container by controlling the opening and closing of at least one of the inflow valve and the outflow valve when a detection value of the temperature sensor during the drying operation is smaller than a first threshold value, and wherein the control unit is configured to store water in the container by controlling the opening and closing of at least one of the inflow valve and the outflow valve when a detection value of the temperature sensor during the drying operation is equal to or greater than a second threshold value.

In the present invention, when the detected value of the temperature sensor during the drying operation is equal to or greater than the first threshold value and less than the second threshold value for a predetermined period of time, the control unit controls the flow of air in the circulation path so that the air circulates so as to pass through the water in the container.

In the present invention, when the detection value of the temperature sensor during the drying operation is reduced from the second threshold value or more to less than the first threshold value, the control unit controls the flow of air in the circulation path so that the air circulates so as not to pass through the water in the container.

Effects of the invention

According to the present invention, in the drying operation of the washing and drying integrated machine, the air in the washing tub is circulated by the air blowing portion so as to be taken out from the take-out port into the circulation path and returned from the return port into the washing tub. The circulated air is heated by the heating part to become hot air, and the washings in the washing drum are dried. When water is stored in the container, the water filter having the container forming a part of the circulation path allows air flowing back and forth from the front of the outlet in the circulation path to pass through the water in the container, thereby capturing foreign matters from the air and storing the foreign matters in the container. In this case, if the water in the container is poured out, foreign matter stored in the container is also discharged along with the water, so that the water filter can be easily maintained. Therefore, the usability of the drying operation can be improved.

However, when air is circulated so as to always pass through the water in the container during the drying operation, the water in the container becomes a resistance, and the circulation of air may be gradually weakened. On the other hand, when the detection value of the temperature sensor that detects the temperature or the temperature change amount of the air circulating during the drying operation is smaller than the first threshold value, the foreign matter such as dust and lint contained in the circulated low-temperature air is reduced to such an extent that immediate capture by the water filter is not required. In contrast, when the detection value of the temperature sensor is equal to or greater than the second threshold value, which is higher than the first threshold value, foreign matter contained in circulated high-temperature air is so much captured immediately by the water filter.

Therefore, in the control unit for executing the washing operation in the washing and drying integrated machine, when the detection value of the temperature sensor in the drying operation is smaller than the first threshold value, that is, when the water filter is not required to capture foreign matters from the circulating air, the flow of the air in the circulating path is controlled so that the air circulates without passing through the water in the container. On the other hand, when the detection value of the temperature sensor during the drying operation is equal to or greater than the second threshold value, that is, when it is necessary to capture foreign matter from the circulating air by the water filter, the control unit controls the flow of the air in the circulation path so that the air circulates so as to pass through the water in the container, thereby capturing foreign matter from the circulating air.

In this way, during the drying operation, the control unit passes the air through the water in the container only when it is necessary to catch the foreign matter from the circulated air, and does not pass the water in the container when it is not necessary to catch the foreign matter. In this case, the air for drying can be smoothly circulated throughout the drying operation, as compared with the case where the circulated air is always passed through the water in the container, and therefore, the reduction in drying performance can be suppressed.

Further, according to the present invention, the circulation path is configured to merge after branching into a first branch path of the container bypassing the water filter and a second branch path connected to the container, and the switching unit switches the flow of air in the circulation path so that the air in the circulation path flows through either the first branch path or the second branch path. In such a configuration, when the detection value of the temperature sensor during the drying operation is smaller than the first threshold value, that is, when it is not necessary to capture foreign matter from the circulating air by the water filter, the control unit controls the switching unit to switch the flow of the air in the circulation path so that the air in the circulation path flows through the first branch, and thus the air circulates so as not to pass through the water in the container. On the other hand, when the detection value of the temperature sensor during the drying operation is equal to or greater than the second threshold value, that is, when a need arises for capturing foreign matter from the circulating air by the water filter, the control unit controls the switching unit to switch the flow of air in the circulation path so that the air in the circulation path flows through the second branch, and thus the air circulates so as to pass through the water in the container. By the control of the switching unit by the control unit, it is possible to pass the air through the water in the container only when it is necessary to capture foreign matter from the circulated air during the drying operation, and not to pass the air through the water in the container when it is not necessary to capture foreign matter.

Further, according to the present invention, the control unit opens the inflow valve in a state where the outflow valve is closed, and water is allowed to flow from the inflow path into the container, whereby water can be stored in the container, and the outflow valve is opened, and water in the container is allowed to flow out of the outflow path, whereby the container can be emptied. In such a configuration, when the detection value of the temperature sensor during the drying operation is smaller than the first threshold value, that is, when it is not necessary to capture foreign matter from the circulated air by the water filter, the control unit controls at least one of the inflow valve and the outflow valve to open and close, thereby evacuating the container, and the circulated air does not flow through the water in the container. On the other hand, when the detection value of the temperature sensor during the drying operation is equal to or greater than the second threshold value, that is, when a need arises for capturing foreign matter from the circulating air by the water filter, the control unit controls the opening/closing of at least one of the inflow valve and the outflow valve to store water in the container, so that the air circulates so as to pass through the water in the container. By controlling the inflow valve and the outflow valve by the control unit, it is possible to store water in the container and allow the air to pass through the water in the container only when foreign matter needs to be trapped in the circulated air during the drying operation, and to empty the container when foreign matter does not need to be trapped, thereby allowing the air to smoothly flow in the container without being subjected to resistance of the water.

Further, according to the present invention, when the state in which the detection value of the temperature sensor is equal to or greater than the first threshold value and less than the second threshold value during the drying operation continues for a predetermined time, foreign matter may start to be generated in the circulated air. Therefore, the control unit controls the flow of air in the circulation path to circulate the air so as to pass through the water in the container, and thus foreign matter that starts to be generated in the circulated air can be immediately captured by the water filter.

Further, according to the present invention, in the case where the detection value of the temperature sensor in the drying operation is reduced from the second threshold value or more to be smaller than the first threshold value, the foreign matter in the circulated air is regarded as being reduced to the extent that the capturing is not necessary. Therefore, the control unit controls the flow of air in the circulation path so that the air circulates so as not to pass through the water in the container. In this way, in the drying operation in this state, the air for drying can be smoothly circulated, and therefore, a decrease in drying performance can be suppressed.

Drawings

Fig. 1 is a schematic longitudinal sectional right side view of a washing and drying integrated machine according to an embodiment of the present invention.

Fig. 2 is a block diagram showing an electrical structure of the washing and drying integrated machine.

Fig. 3 is a flowchart showing a drying operation performed in the washing and drying integrated machine.

Fig. 4 is a flowchart showing the duct determination processing performed during the drying operation.

Fig. 5 is a flowchart showing the duct adjustment process performed during the drying operation.

Fig. 6 is a flowchart showing a modification of the duct adjustment process.

Fig. 7 is a schematic vertical sectional right side view of a washing and drying integrated machine of a modification.

Description of the reference numerals

1: washing and drying integrated machine; 3: a washing drum; 20: a circulation path; 20BD: a first branch; 20BE: a second branch; 20D: a take-out port; 20E: a return port; 21: an air supply unit; 22: a heating section; 30: a water filter; 31: an inflow path; 32: an inflow valve; 33: an outflow path; 34: an outflow valve; 36: a switching section; 40: a container; 60: a control unit; 62: a temperature sensor; l: and (5) washing.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Fig. 1 is a schematic longitudinal sectional right side view of a washing and drying integrated machine 1 according to an embodiment of the present invention. The direction perpendicular to the paper surface of fig. 1 is referred to as a left-right direction X of the washing and drying integrated machine 1, the left-right direction in fig. 1 is referred to as a front-rear direction Y of the washing and drying integrated machine 1, and the up-down direction in fig. 1 is referred to as an up-down direction Z of the washing and drying integrated machine 1. Of the left-right directions X, the back side of the paper surface of fig. 1 is referred to as left side X1, and the front side of the paper surface of fig. 1 is referred to as right side X2. Of the front-rear directions Y, the left side in fig. 1 is referred to as front side Y1, and the right side in fig. 1 is referred to as rear side Y2. Of the vertical directions Z, the upper side is referred to as an upper side Z1, and the lower side is referred to as a lower side Z2.

The washing and drying integrated machine 1 is a so-called drum washing and drying integrated machine, and performs a washing operation, a rinsing operation, a dehydrating operation, and a drying operation. The washing and drying integrated machine 1 comprises: a case 2; a washing cylinder 3 disposed in the case 2; a water supply path 4 and a water discharge path 5 connected to the washing drum 3; a drain filter 6 for capturing foreign matter from water flowing through the drain passage 5; a drum 7 accommodated in the washing tub 3; a motor 8 for rotating the drum 7; and a drying unit 9 for drying the laundry L in the drum 7.

The case 2 is formed in a box shape. The front surface 2A of the case 2 is, for example, a vertical surface. An opening 2B for communicating the inside and outside of the case 2 is formed in the front surface 2A. The front surface 2A is provided with a door 10 for opening and closing the opening 2B, and a display operation portion 11 constituted by a switch, a liquid crystal panel, and the like. The user can freely select the operation conditions of the washing and drying machine 1 or instruct the washing and drying machine 1 to start and stop the operation by operating the switch or the like of the display operation unit 11. Information related to the operation of the washing and drying integrated machine 1 is visually displayed on a liquid crystal panel or the like of the display operation unit 11.

The washing tub 3 is coupled to the casing 2 via a support member 15 such as a damper, and is elastically supported by the support member 15. The washing tub 3 has: a cylindrical circumferential wall 3A centered on an axis J extending in the front-rear direction Y along the horizontal direction H; a disk-shaped back wall 3B disposed vertically and closing the hollow portion of the circumferential wall 3A from the rear side Y2; and an annular front wall 3C connected to the front end edge of the circumferential wall 3A. A through hole 3D penetrating the back surface wall 3B in the front-rear direction Y along the axis J is formed in the center of the back surface wall 3B. The front wall 3C has: a first annular front surface portion 3E protruding from the front end edge of the circumferential wall 3A toward the axis J; a cylindrical second front surface portion 3F protruding from an inner peripheral edge of the first front surface portion 3E toward the front side Y1; and a third annular front surface portion 3G protruding from a front end edge of the second front surface portion 3F toward the axis J side. A port 3H communicating from the front side Y1 to the hollow portion of the circumferential wall 3A is formed inside the third front surface portion 3G. The inlet 3H is placed opposite to and in communication with the opening 2B of the housing 2 from the rear side Y2.

The water supply channel 4 has one end (not shown) connected to a faucet (not shown) and the other end 4A connected to the circumferential wall 3A in the wash tub 3, for example. Since the other end portion 4A is provided with the elastic deformation portion 4B formed of, for example, a bellows, the transmission of the vibration of the washing tub 3 to the entire water supply passage 4 is suppressed. At the time of water supply, water from the tap is supplied from the water supply 4 into the washing tub 3. Tap water, water in which a detergent or the like is dissolved, and the like are stored in the washing tub 3. A water supply valve 12 that opens and closes to start or stop water supply is provided in the middle of the water supply passage 4.

The drain passage 5 is connected to a lower end portion of the washing tub 3, for example, a lower end portion of the first front surface portion 3E of the front surface wall 3C. The water in the washing tub 3 is discharged from the water discharge passage 5 to the outside. Since the end portion of the drain passage 5 connected to the washing tub 3 is provided with an elastic deformation portion 5A made of, for example, a bellows, the transmission of vibration of the washing tub 3 to the entire drain passage 5 is suppressed. A drain valve 13 that opens and closes to start or stop the drainage is provided in the middle of the drainage path 5.

The drain filter 6 is provided in the drain passage 5 upstream of the drain valve 13 with respect to the wash bowl 3. Since the front end of the drain filter 6 is exposed to the front surface 2A of the housing 2, the user can grasp the front end of the drain filter 6 and attach and detach the drain filter 6 to and from the housing 2. As the structure of the drain filter 6, a known structure can be used.

The drum 7 is smaller than the washing tub 3 by one turn, and can accommodate the laundry L therein. The drum 7 has: a cylindrical circumferential wall 7A disposed coaxially with the circumferential wall 3A of the washing tub 3; a disk-shaped back surface wall 7B that closes the hollow portion of the circumferential wall 7A from the rear side Y2; and an annular wall 7C protruding from the front end edge of the circumferential wall 7A toward the axis J side. A plurality of through holes 7D are formed in the drum 7 at least in the circumferential wall 7A, and water in the washing tub 3 passes between the washing tub 3 and the drum 7 through the through holes 7D. Therefore, the water level in the washing tub 3 coincides with the water level in the drum 7. A support shaft 14 extending rearward Y2 along the axis J is provided at the center of the rear surface wall 7B of the drum 7. The rear end portion of the support shaft 14 is disposed on the rear side Y2 of the rear wall 3B by passing through the through hole 3D of the rear wall 3B of the washing tub 3.

An inlet 7E communicating from the front side Y1 to the hollow portion of the circumferential wall 7A is formed inside the annular wall 7C. The inlet/outlet 7E is placed opposite and in communication with the inlet/outlet 3H of the washing tub 3 and the opening 2B of the casing 2 from the rear side Y2. The inlet 3H and the outlet 7E are opened and closed together with the opening 2B by the door 10. The user of the washing and drying machine 1 puts the laundry L into and out of the drum 7 through the opened opening 2B, the inlet and outlet 3H, and the inlet and outlet 7E.

The motor 8 is disposed in the housing 2 at the rear side Y2 of the rear wall 3B of the washing tub 3. The motor 8 is coupled to a support shaft 14 provided in the drum 7. The driving force generated by the motor 8 is transmitted to the support shaft 14, and the drum 7 rotates around the axis J along with the support shaft 14. A clutch mechanism (not shown) for transmitting or shutting off the driving force of the motor 8 to the support shaft 14 may be provided between the motor 8 and the support shaft 14.

The drying unit 9 includes: a circulation passage 20 connected to the washing tub 3; a blower 21 for generating air flow in the circulation duct 20; and a heating unit 22 for heating air in the circulation path 20. The circulation path 20 is a flow path disposed in the upper side Z1 of the washing tub 3 in the casing 2. The circulation path 20 has: a horizontal portion 20A extending horizontally in the front-rear direction Y; a rear portion 20B extending from a rear end of the horizontal portion 20A to the lower side Z2; and a front portion 20C extending from the front end of the horizontal portion 20A toward the lower side Z2, the circulation path 20 being fixed to the casing 2. A take-out port 20D is formed in the rear portion 20B. The outlet 20D is connected to the rear wall 3B in the washing tub 3, for example, and is in communication with the inside of the washing tub 3 from the rear side Y2. A return port 20E is formed at the lower end of the front portion 20C. The return port 20E is connected to, for example, an upper end portion of the second front surface portion 3F of the front surface wall 3C in the washing tub 3, and communicates with the inside of the washing tub 3 from the upper side Z1. Since the circulation path 20 is provided with the elastic deformation portions 20F formed of, for example, bellows at both end portions connected to the washing tub 3, the transmission of vibration of the washing tub 3 to the entire circulation path 20 is suppressed.

The blower 21 is a so-called blower, and includes a rotary blade 23 disposed in a region of the circulation path 20 near the outlet 20D, and a motor (not shown) for rotating the rotary blade 23. In the drying operation, the air in the washing tub 3 and in the drum 7 is taken out into the circulation path 20 from the take-out port 20D and then returned into the washing tub 3 from the return port 20E by the rotation of the rotary vane 23 as indicated by the thick dotted arrow. Thereby, the air in the washing tub 3 circulates so as to flow through the washing tub 3 and the circulation path 20 in this order.

The heating unit 22 is a heat exchanger in a heat pump, a normal heater, or the like, and is provided at least partially in the circulation path 20. The heating portion 22 has a plurality of fin-shaped heat dissipation portions 22A at portions provided in the circulation path 20. In the drying operation, the heat radiating portion 22A is heated to a high temperature by the operation of the heating portion 22, and therefore, the air flowing through the circulation path 20 for circulation is heated to be hot air when passing around the heat radiating portion 22A. During the drying operation, foreign matter such as lint and dust is generated, and the foreign matter flows along with the hot air. When foreign matter adheres to and accumulates in the heat radiation portion 22A of the heating portion 22, there is a concern that the heating efficiency of the heating portion 22 is reduced and the performance is reduced due to the deterioration of the flow of air in the circulation path 20, and therefore, it is necessary to catch the foreign matter.

The drying unit 9 includes: a water filter 30 for capturing foreign matters contained in the air flowing through the circulation path 20 by water; an inflow path 31 for supplying water to the water filter 30; and an inflow valve 32 that opens and closes the inflow path 31. The drying unit 9 further includes: an outflow path 33 for guiding water in the water filter 30 to the drainage path 5; an outflow valve 34 that opens and closes the outflow path 33; and an overflow path 35 for allowing water in the water filter 30 to overflow to the outflow path 33. The water filter 30, the inflow path 31, the inflow valve 32, the outflow path 33, the outflow valve 34, and the overflow path 35 will be described in detail below with respect to the circulation path 20 constituting the drying unit 9.

The portion of the circulation path 20 closer to the outlet 20D than the heat radiating portion 22A of the heating portion 22 is referred to as an upstream portion 20G. The upstream portion 20G is constituted by a part of the horizontal portion 20A and the entire rear portion 20B. In the case where the rotary blade 23 of the blower 21 is disposed closer to the outlet 20D than the heat sink 22A, the portion of the circulation path 20 closer to the outlet 20D than the rotary blade 23 may be regarded as the upstream portion 20G. The rear portion 20B includes: a first portion 20BA extending from the take-out port 20D, for example, toward the rear side Y2; a second portion 20BB extending from the rear end of the horizontal portion 20A toward the lower side Z2; and a middle portion 20BC connecting the first portion 20BA and the second portion 20 BB. The first portion 20BA is provided with an elastically deformable portion 20F.

The middle portion 20BC branches into: a first branch 20BD extending from a rear end of the first portion 20BA, for example, to the rear side Y2, and connected to the second portion 20 BB; and a second branch 20BE extending from the rear end of the first portion 20BA, for example, toward the lower side Z2. A switching unit 36, which is a multi-way valve, for example, is provided at a branching point at which the intermediate portion 20BC branches into the first branch 20BD and the second branch 20 BE. The switching unit 36 switches the flow of air in the circulation path 20 so that air flowing from the take-out port 20D to the return port 20E in the circulation path 20 flows through either the first branch path 20BD or the second branch path 20 BE.

The water filter 30 is disposed in the housing 2 at a lower portion of the rear region 2C around the rear wall 3B of the washing tub 3, and is fixed to the housing 2. The water filter 30 includes, for example, a box-like container 40 made of resin. The container 40 has: a plate-like bottom wall 41 extending in the horizontal direction H; a cylindrical side wall 42 which is formed by wrapping the outer edge of the bottom wall 41 and is erected upward Z1 from the bottom wall 41; and a top wall 43 connected to the upper edge of the side wall 42. The interior space 40A of the container 40 is surrounded by a bottom wall 41, side walls 42, and a top wall 43.

In the rear portion 20B constituting the upstream portion 20G of the circulation path 20, the lower end portion of the second portion 20BB is connected to the top wall 43 of the container 40 and communicates with the inner space 40A of the container 40. In the rear portion 20B, the lower end portion of the second branch 20BE of the intermediate portion 20BC penetrates the top wall 43, is disposed in the internal space 40A, and opens in the internal space 40A, thereby being connected to the container 40. In this way, the inner space 40A is located midway in the rear portion 20B, and therefore the container 40 constitutes a part of the rear portion 20B of the circulation path 20. The container 40 is disposed in the rear portion 20B at a position closer to the outlet 20D of the circulation path 20 than the heating portion 22. Further, as described above, the first branch 20BD in the intermediate portion 20BC of the rear portion 20B is connected to the second portion 20BB, thereby bypassing the container 40. Such a rear portion 20B branches into a first branch 20BD and a second branch 20BE in the intermediate portion 20BC, and then merges with the internal space 40A at a second portion 20BB downstream of the branching position.

The inflow path 31 branches from a portion of the water supply path 4 closer to the faucet than the water supply valve 12, and is connected to a side wall 42 of the container 40. The inflow valve 32 is provided midway in the inflow path 31. The first portion 33A constituting the end portion of the outflow path 33 on the water filter 30 side is connected to the bottom wall 41 of the container 40 from the lower side Z2 and communicates with the internal space 40A of the container 40. The second portion 33B, which is an end portion on the opposite side of the first portion 33A in the outflow path 33, is connected to an upstream portion on the washing tub 3 side of the drain filter 6 in the drain path 5. The second portion 33B may also be directly connected to the drain filter 6. The first portion 33A and the second portion 33B are provided with elastic deformation portions 33C, for example, formed of bellows, respectively, so that the first portion 33A and the second portion 33B can be elastically deformed.

The outflow valve 34 is provided at the first portion 33A of the outflow path 33. The overflow path 35 connects the side wall 42 of the container 40 with the first portion 33A. The portion of the overflow path 35 connected to the side wall 42 faces the inner space 40A of the container 40 as an overflow port 35A. The overflow port 35A is disposed at a position lower than a position at which the inflow path 31 is connected to the side wall 42.

Fig. 2 is a block diagram showing an electrical structure of the washing and drying integrated machine 1. The washing and drying integrated machine 1 further includes a control part 60, a water level sensor 61, and a temperature sensor 62. The control unit 60 is configured as a microcomputer, for example, and includes: a CPU63; a memory 64 such as a ROM or a RAM for storing various count values, threshold values, and the like described later; and a timer 65 for counting time, wherein the control unit 60 is built in the case 2. The motor 8, the display operation unit 11, the water supply valve 12, the drain valve 13, the blower unit 21, the heating unit 22, the inflow valve 32, the outflow valve 34, the switching unit 36, the water level sensor 61, and the temperature sensor 62 are electrically connected to the control unit 60.

Referring to fig. 1, the control unit 60 controls the rotation of the motor 8 to generate a driving force for the motor 8 or to stop the rotation of the motor 8. When the user operates the display operation unit 11 to select the operation condition or the like of the laundry L, the control unit 60 receives the selection. The control unit 60 controls the display of the display operation unit 11. The control unit 60 controls opening and closing of the water supply valve 12 and the drain valve 13. When the control unit 60 opens the water supply valve 12 with the drain valve 13 closed, tap water from the tap flows through the water supply passage 4 and is supplied from the other end portion 4A of the water supply passage 4 to the wash tub 3 and stored therein. When the control unit 60 opens the drain valve 13, water in the wash tub 3 is discharged to the outside through the drain passage 5.

The control unit 60 causes the air blowing unit 21 to operate, thereby generating air flowing from the outlet 20D to the return port 20E in the circulation path 20, and circulates between the drum 7 and the circulation path 20. The control unit 60 operates the heating unit 22 to change the air circulating between the drum 7 and the circulation path 20 into hot air. The control unit 60 controls opening and closing of the inflow valve 32 and the outflow valve 34 associated with the water filter 30, respectively. When the control unit 60 opens the inflow valve 32 with the outflow valve 34 closed, tap water from the tap flows through the water supply channel 4 and the inflow channel 31, flows into the container 40 of the water filter 30, and is stored in the internal space 40A of the container 40. When the control unit 60 opens the outflow valve 34, the water in the container 40 flows out to the outflow path 33, and is discharged to the outside through the water discharge path 5. The control unit 60 controls the opening and closing of the switching unit 36 so that the air taken out from the take-out port 20D into the first portion 20BA of the circulation path 20 flows through either one of the first branch line 20BD and the second branch line 20 BE.

The water level sensor 61 is a known sensor that detects the water level in the container 40 of the water filter 30, and is attached to, for example, the vicinity of a portion of the container 40 to which the overflow path 35 is connected. The detection value of the water level sensor 61 is input to the control unit 60 in real time.

As the temperature sensor 62, a known temperature sensor can be used. The temperature sensor 62 is attached to the washing tub 3, for example. The temperature sensor 62 detects the temperature of the air in the washing tub 3, and thereby detects the temperature of the air circulating in accordance with the operation of the blower 21. The temperature sensor 62 may detect not the temperature itself of the circulated air but the temperature change amount of the air with respect to a predetermined reference temperature as a detection value. The detection value of the temperature sensor 62 is input to the control unit 60 in real time.

The control unit 60 operates the motor 8 to open and close the water supply valve 12 and the water discharge valve 13, respectively, thereby sequentially performing a washing operation, a rinsing operation, and a dehydrating operation. The rinsing operation may be performed a plurality of times, and the dehydrating operation may be performed between the washing operation and the rinsing operation, and between the rinsing operation and the next rinsing operation.

Before the start of the washing operation, detergent is introduced into the drum 7. In the washing operation, the control unit 60 opens the water supply valve 12 for a predetermined time with the drain valve 13 closed, supplies water from the water supply path 4 to the washing tub 3 and the drum 7, and then rotates the drum 7 by the motor 8. Thereby, the laundry L in the drum 7 is beat-washed. In the hammer cleaning, the laundry L is lifted to some extent and naturally falls to the water surface to be tumbled repeatedly. The dirt is removed from the laundry L by the impact caused by the tumbling and the detergent component contained in the detergent water stored in the drum 7. When a predetermined time has elapsed from the start of the rolling, the control unit 60 opens the drain valve 13 to drain water, and the washing operation ends.

During the rinsing operation, the control unit 60 opens the water supply valve 12 for a predetermined time to supply water to the washing tub 3 and the drum 7, and then rotates the drum 7 by the motor 8. Then, the above-described tumbling is repeated, and thus the laundry L is rinsed with tap water in the drum 7. When the predetermined time has elapsed from the start of the rolling, the control unit 60 drains the water, and the rinsing operation ends. In the dewatering operation, the control unit 60 dewaters and rotates the drum 7 with the drain valve 13 opened. The laundry L in the drum 7 is dehydrated by centrifugal force generated by the dehydration rotation of the drum 7. The water exuded from the laundry L by the dehydration is discharged to the outside of the machine from the water discharge path 5.

After the dehydration operation, the control unit 60 operates the blower unit 21 and the heater unit 22 to control the opening and closing of the water supply valve 12, the drain valve 13, the inflow valve 32, the outflow valve 34, and the switching unit 36, respectively, and performs the drying operation. In the washing and drying integrated machine 1, only the drying operation may be performed without the washing operation, the rinsing operation, and the dehydrating operation.

Referring also to fig. 3, which is a flowchart showing the drying operation, at the start of the drying operation, the control unit 60 causes the heating unit 22 to operate to preheat the heat radiating unit 22A of the heating unit 22 (step S1), and opens the inflow valve 32 in a state where the outflow valve 34 is closed (step S2). Thus, water from the faucet is supplied into the container 40 of the water filter 30 through the water supply channel 4 and the inflow channel 31, and is stored. At this time, the control unit 60 stops the blower 21 so that the water in the container 40 does not scatter. That is, the control unit 60 opens the inflow valve 32 and stores water in the container 40 before the blower 21 is operated to start the drying operation. When the water level in the tank 40 detected by the water level sensor 61 rises to the reference water level W near the lower end of the second branch 20BE of the circulation path 20, the function of the water filter 30 is activated, and the control unit 60 closes the inflow valve 32 to terminate the water supply to the water filter 30.

The reference water level W is set to a position lower than the overflow port 35A, but may BE higher than the lower end of the second branch 20 BE. When the water level in the container 40 rises to the overflow port 35A, a part of the water in the container 40 overflows to the overflow path 35 outside the container 40 through the overflow port 35A, is guided to the outflow path 33 by the overflow path 35, and is discharged to the outside through the outflow path 33 and the drain path 5.

After water is supplied to the water filter 30, the control unit 60 continues to operate the blower 21 while the heating unit 22 is operated (step S3). As a result, the air heated as described above is circulated so as to flow through the washing tub 3 and the circulation path 20 in this order. The air is dispersed to the laundry L in the drum 7 to absorb moisture of the laundry L. Thereby, the laundry L is dried. The air that absorbs moisture in the laundry L in the washing tub 3 is changed to humid air, and is taken out from the take-out port 20D into the circulation path 20 as indicated by a thick dotted arrow V1 in fig. 1, and flows into the return port 20E in the circulation path 20.

When the operation of the blower 21 is started, the controller 60 controls the switching unit 36 to open and close, thereby allowing the air taken out from the take-out port 20D into the first portion 20BA of the circulation path 20 to flow into the second branch path 20 BE. Accordingly, the air flowing through the second branch 20BE descends as indicated by the thick dotted arrow V2 of fig. 1 and flows into the container 40 of the water filter 30. The air flowing into the container 40 passes through the water stored in the container 40 and descends, and changes direction before the bottom wall 41 of the container 40, and ascends in the water as indicated by a thick dotted arrow V3 in fig. 1. At this time, the air is dehumidified by heat exchange with the water in the container 40. The foreign matter contained in the air is captured by the water in the container 40 and is stored in the container 40 together with the water. This prevents foreign matter from reaching the heating portion 22 and degrading the performance of the heating portion 22. In addition, the water of the water filter 30 can not only trap foreign matters generated during the drying operation, but also dehumidify the humid air.

The container 40 is disposed at a position closer to the outlet 20D than the heating unit 22 in the upstream portion 20G of the circulation path 20, and therefore, the water filter 30 can quickly catch foreign substances from the air immediately after being taken out from the outlet 20D to the circulation path 20. This can reduce the area where the air containing the foreign matter in the circulation path 20 spreads, and thus can prevent the foreign matter from adhering to most of the circulation path 20. Further, since the container 40 is disposed separately from the heating portion 22, even if hot air is generated in the container 40 in response to an increase in the water temperature associated with heat exchange between air and water, the hot air is less likely to reach the heating portion 22.

The air from which the moisture and foreign matter have been removed in this way rises further over the water surface in the container 40 to reach the top wall 45, flows out from the container 40 to the second portion 20BB of the rear portion 20B of the circulation path 20, and rises in the second portion 20BB toward the return port 20E as indicated by a thick dotted arrow V3 in fig. 1. As indicated by a thick broken line arrow V4 in fig. 1, the air rising into the second portion 20BB flows toward the front side Y1 in the horizontal portion 20A of the circulation path 20 by the rotary vane 23 of the blower 21, and is reheated by the heat radiating portion 22A of the heating portion 22. The reheated air descends into the front portion 20C of the circulation path 20, goes to the return port 20E, is supplied from the return port 20E into the washing tub 3 and the drum 7, and is reused for drying the laundry L in the drum 7.

As described above, the air passage through which the air taken out from the take-out port 20D in the circulation path 20 passes through the water stored in the container 40 and flows to the return port 20E is hereinafter referred to as "water passage air passage". On the other hand, as will be described later, the air taken out from the take-out port 20D in the circulation path 20 passes through the first branch path 20BD as indicated by a thick broken line arrow V5 in fig. 1, and the air passage that bypasses the water in the container 40 and flows to the return port 20E is hereinafter referred to as a "water detour air passage". The circulation path 20 in the standby state before the start of the drying operation is a water detour duct.

When the air duct is kept in a state in which water passes through the air duct during the drying operation and air is circulated so as to pass through the water in the container 40 all the time, the water in the container 40 becomes a resistance, and thus the circulation of air may be gradually weakened. When the circulation of air becomes weak, the amount of the hot air supplied into the washing tub 3 decreases, and thus drying performance decreases. Therefore, after the air blower 21 is operated in step S3, the control unit 60 performs the duct specification process (step S4) and the duct adjustment process (step S5) so as to switch the flow in the circulation path 20 of the air circulated in the drying operation to which one of the air duct and the water detouring air duct the water is passing through.

Referring to fig. 4, in the duct specification process, control unit 60 first confirms the detection value of temperature sensor 62 (step S11). When the detected value is smaller than the first threshold value, foreign matter such as dust and thread ends contained in the circulated low-temperature air is reduced to a level that does not require immediate capture by the water filter 30. The case where the foreign matter is small also includes the case where the foreign matter is not present. Conversely, if the detection value is equal to or greater than the second threshold value, which is higher than the first threshold value, foreign matter contained in the circulated high-temperature air is so much captured immediately by the water filter 30. The first threshold value and the second threshold value are predetermined by experiments or the like and stored in the memory 64. In addition, in the case where the detected value of the temperature sensor 62 is the temperature itself of the circulated air, one example of the first threshold value is 35 degrees, and one example of the second threshold value is 45 degrees.

When the detection value of the temperature sensor 62 during the drying operation is smaller than the first threshold value (yes in step S12), that is, when it is not necessary to capture foreign matter from the circulating air by the water filter 30, the control unit 60 controls the switching unit 36 to switch the flow of the air in the circulation path 20 to the water detouring duct so that the air in the circulation path 20 flows through the first branch path 20BD (step S13). That is, when the detection value of the temperature sensor 62 during the drying operation is smaller than the first threshold value, the control unit 60 controls the flow of air in the circulation path 20 so that the air circulates so as not to pass through the water in the container 40 of the water filter 30.

When the detection value of the temperature sensor 62 during the drying operation is equal to or greater than the second threshold value (no in step S12 and yes in step S14), that is, when a need arises to capture foreign matter from the circulating air by the water filter 30, the control unit 60 controls the switching unit 36 to switch the flow of air in the circulation path 20 to the water passage so that the air in the circulation path 20 flows through the second branch path 20BE (step S15). That is, when the detection value of the temperature sensor 62 during the drying operation is equal to or greater than the second threshold value, the control unit 60 controls the flow of air in the circulation path 20 to circulate the air so as to pass through the water in the container 40 of the water filter 30, thereby capturing foreign matters from the circulated air.

As described above, after the optimum air passage in the circulation path 20 is determined by the air passage determination process (step S4), the control section 60 executes the air passage adjustment process for feedback (step S5). Referring to fig. 5, in the duct adjustment process, the control unit 60 first confirms the detection value of the temperature sensor 62 (step S21).

When the detection value of the temperature sensor 62 during the drying operation is smaller than the first threshold value (no in step S22), the control unit 60 controls the switching unit 36 to switch the flow of air in the circulation path 20 to the water detouring air channel because it is not necessary to capture foreign matter from the circulating air by the water filter 30 (step S23).

When the detection value of the temperature sensor 62 during the drying operation is equal to or greater than the second threshold value (yes in step S22 and yes in step S24), it is necessary to capture foreign matter from the circulating air by the water filter 30, and therefore the control unit 60 controls the switching unit 36 to switch the flow of air in the circulation path 20 to water through the air duct (step S25).

If the detection value of the temperature sensor 62 during the drying operation is equal to or greater than the first threshold value but less than the second threshold value (yes in step S22 and no in step S24), the control unit 60 controls the switching unit 36 to switch the flow of air in the circulation path 20 to the water detour path (step S26). The control unit 60 measures the elapsed time after the flow of air in the circulation path 20 is switched to the water detour air channel in step S26 by using the timer 65. When the elapsed time reaches a predetermined time such as several minutes to several ten minutes (yes in step S27), that is, when the detection value of the temperature sensor 62 during the drying operation is equal to or greater than the first threshold value and less than the second threshold value, the amount of foreign matter may be generated in the circulated air and may start to increase. In this case, the control unit 60 controls the switching unit 36 to switch the flow of air in the circulation path 20 to the flow of water through the air duct, thereby controlling the flow of air in the circulation path 20 to circulate the air so as to pass through the water in the container 40 (step S25). Thus, foreign matter that starts to be generated in the circulated air can be immediately captured by the water filter 30. The predetermined time is determined in advance by experiments or the like and stored in the memory 64.

The control unit 60 may execute the air duct adjustment process shown in fig. 6. In this case, the control unit 60 first confirms the detection value of the temperature sensor 62 (step S31). When the detection value of the temperature sensor 62 during the drying operation is equal to or greater than the second threshold value (yes in step S32), it is necessary to capture foreign matter from the circulating air by the water filter 30, and therefore the control unit 60 controls the switching unit 36 to switch the flow of air in the circulation path 20 to water through the air duct (step S33). When the detection value of the temperature sensor 62 is less than the second threshold value but equal to or greater than the first threshold value (no in step S32 and no in step S34), the control unit 60 may capture foreign matter from the circulated air by switching the flow of air in the circulation path 20 to water through the air duct (step S33).

When the detection value of the temperature sensor 62 in the drying operation decreases from the second threshold value or more to less than the first threshold value (no in step S32 and yes in step S34), the control unit 60 measures the elapsed time from when the detection value becomes less than the first threshold value with the timer 65. When the elapsed time reaches a predetermined time such as several minutes to several ten minutes (yes in step S35), that is, when the detection value of the temperature sensor 62 is changed from the second threshold value or more to a state smaller than the first threshold value for a predetermined time, it is considered that foreign matter in the circulated air is reduced to a level where trapping is not necessary. The predetermined time is determined in advance by experiments or the like and stored in the memory 64.

When the elapsed time in the state where the detection value of the temperature sensor 62 is smaller than the first threshold value reaches the predetermined time (yes in step S35), the control unit 60 controls the switching unit 36 to switch the flow of air in the circulation path 20 to the water detour air channel, thereby controlling the flow of air in the circulation path 20 so that the air circulates so as not to pass through the water in the container 40 (step S36). In this way, in the drying operation in this state, the air for drying can be smoothly circulated, and therefore, a decrease in drying performance can be suppressed. On the other hand, for example, when the user opens the door 10 or the like in the middle of the time, the state in which the detection value of the temperature sensor 62 is changed from the second threshold value or more to be smaller than the first threshold value does not continue for a predetermined time (no in step S35), and therefore the control unit 60 captures the foreign matter from the circulated air by keeping the flow of the air in the circulation path 20 in the state in which the water passes through the air duct (step S33).

As described above, during the drying operation, the control unit 60 controls the switching unit 36 to pass air through the water in the container 40 of the water filter 30 only when it is necessary to capture foreign matter from circulated air, and to prevent air from passing through the water in the container 40 when it is not necessary to capture foreign matter. In this case, compared with the case where the circulated air is always passed through the water in the container 40, the air for drying can be smoothly circulated throughout the drying operation, and therefore, the amount of hot air can be sufficiently ensured, and the reduction in drying performance can be suppressed. However, at the start of the drying operation, the control unit 60 necessarily sets the circulation path 20 to be water through the air duct (step S2 and step S3) regardless of the detection value of the temperature sensor 62, as shown in fig. 3, and therefore, foreign matter existing before the drying operation and adhering to the drum 7 or the like can be captured by the water filter 30.

When the control unit 60 continues the air duct adjustment processing in step S5 for a predetermined time, for example, about 1 to 3 hours, the heating unit 22 is stopped (step S6). In this state, the air blowing portion 21 continues to operate, and therefore, the cool air circulates and spreads to the laundry L in the drum 7, whereby the laundry L is cooled. When the control unit 60 continues the circulation of the cool air for a predetermined time of about several tens of minutes, the air blowing unit 21 is stopped and the outflow valve 34 is opened to perform the water discharge of the water filter 30 as a process at the end of the drying operation (step S7). Thereby, the water and foreign matter in the container 40 of the water filter 30 are discharged to the outflow path 33, and guided from the outflow path 33 to the drain path 5. That is, if the water in the container 40 is poured out, the foreign matter accumulated in the container 40 is also discharged with the water.

The foreign matter guided to the drain passage 5 is captured by the drain filter 6 (see fig. 1). If the user removes foreign matter stored in the drain filter 6, the foreign matter in the container 40 is also removed, and therefore maintenance for removing foreign matter in the container 40 by the water filter 30 is not required. This facilitates maintenance of the water filter 30, and thus improves usability in the drying operation. In this case, the drain filter 6 may be omitted, and in this case, the foreign matter guided to the drain passage 5 may be directly discharged to the outside through the drain passage 5.

When there is no water in the container 40, the drying operation is ended. The control unit 60 may determine whether or not water is present in the container 40 based on the detection result of the water level sensor 61, or may determine that the required time has elapsed. The required time is determined in advance by experiments or the like, and stored in the memory 64. In this way, since the inside of the container 40 is emptied, it is possible to prevent the water from remaining in the container 40 from the end of the drying operation to the start of the next drying operation, and thus to prevent the mold and the other bacteria from propagating in the container 40.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope described in the claims.

For example, in the above-described embodiment, the circulation path 20 is branched into the first branch path 20BD and the second branch path 20BE in the intermediate portion 20BC of the rear portion 20B, whereby the above-described water detour air passage and water passage air passage can BE switched (see fig. 1). Alternatively, as in the modification shown in fig. 7, the intermediate portion 20BC may extend downward Z2 from the rear end of the first portion 20BA without branching, and may be disposed in the internal space 40A so as to penetrate the top wall 43. In fig. 7, members having the same functions as those described above are given the same reference numerals. In the modification, the lower end of the intermediate portion 20BC is connected to the container 40 by being opened in the internal space 40A. Therefore, as indicated by the thick dotted arrow, the air introduced into the circulation path 20 from the outlet port 20D for circulation is necessarily passed through the inside of the container 40 of the water filter 30 to the return port 20E.

In the case of the modification, the circulation path 20 when water is accumulated in the container 40 to the reference water level W is the above-described water passage air channel, and the circulation path 20 when the container 40 is emptied is the above-described water detour air channel. The control unit 60 controls the opening/closing of at least one of the inflow valve 32 and the outflow valve 34, thereby storing water in the container 40, switching the circulation path 20 to a water passage, or switching the circulation path 20 to a water bypass passage by draining the container 40. As an example, the control unit 60 opens the inflow valve 32 in a state where the outflow valve 34 is closed, and causes water to flow from the inflow path 31 into the container 40, thereby storing water in the container 40, and causes water in the container 40 to flow from the outflow path 33 by opening the outflow valve 34, thereby emptying the container 40.

Then, in the air passage specification processing (step S4) of the modification, when the detection value of the temperature sensor 62 during the drying operation is smaller than the first threshold value (yes in step S12 of fig. 4), the control unit 60 also switches the circulation passage 20 to the water detouring air passage (step S13), so that the circulated air flows in the empty container 40 without passing through the water. When the detection value of the temperature sensor 62 during the drying operation is equal to or greater than the second threshold value (no in step S12 and yes in step S14), the control unit 60 switches the circulation path 20 to the water passage (step S15), and thus the air circulates so as to pass through the water stored in the container 40. In the duct adjustment processing (step S5) according to the modification, as described above, the control unit 60 also switches the circulation path 20 between the water bypass duct and the water passage duct according to the amount of foreign matter in the circulated air (see fig. 5 and 6).

In the modification, by controlling the inflow valve 32 and the outflow valve 34 by the control unit 60, during the drying operation, the air is stored in the container 40 and is allowed to pass through the water in the container 40 only when the foreign matter needs to be trapped in the circulated air, and when the foreign matter does not need to be trapped, the container 40 is emptied to allow the air to smoothly flow in the container 40 without being subjected to the resistance of the water.

The various features described above may be combined as appropriate. For example, the control unit 60 may execute only one of the air duct adjustment processing shown in fig. 5 and the air duct adjustment processing shown in fig. 6, or may execute the processing in two stages. The control unit 60 may combine the control of the switching unit 36 (see fig. 1) with the control of the inflow valve 32 and the outflow valve 34 (see fig. 7) in the modification example described above, and may switch the circulation path 20 between a water bypass duct and a water passage duct.

In the drum-type washing and drying integrated machine 1 according to the above embodiment, the drum 7 may be disposed so that the axis J is inclined with respect to the horizontal direction H. The washing and drying integrated machine 1 may be a vertical washing and drying integrated machine in which the axis J extends in the longitudinal direction.

Claims

1. The utility model provides a washing and drying all-in-one which characterized in that includes:

a washing drum for accommodating washings;

A circulation path having a take-out port and a return port connected to the washing drum;

an air supply unit configured to circulate air in the washing tub by taking the air out of the washing tub from the take-out port into the circulation path and returning the air from the return port into the washing tub;

a heating unit for heating the circulated air;

a water filter having a container constituting a part of the circulation path, wherein when water is stored in the container, air passing through the circulation path from the outlet port to the return port is allowed to pass through the water in the container, thereby capturing foreign matters from the air;

a temperature sensor for detecting the temperature or the temperature variation of the circulated air; and

a control unit that controls the air blowing unit and the heating unit to perform a drying operation or controls the flow of air circulating in the drying operation in the circulation path,

when the detection value of the temperature sensor during the drying operation is smaller than a first threshold value, the control unit controls the flow of air in the circulation path so that the air circulates so as not to pass through the water in the container,

when the detection value of the temperature sensor during the drying operation is equal to or greater than a second threshold value higher than the first threshold value, the control unit controls the flow of air in the circulation path so that the air circulates so as to pass through the water in the container;

The middle part of the circulation path merges after branching into a first branch that bypasses the container and a second branch that is connected to the container,

the washing and drying integrated machine comprises a switching part for switching the flow of the air in the circulation path in a mode that the air in the circulation path flows through any one of the first branch path and the second branch path,

when the detection value of the temperature sensor in the drying operation is smaller than a first threshold value, the control part controls the switching part to switch the flow of the air in the circulation path in a mode that the air in the circulation path flows through the first branch path,

when the detection value of the temperature sensor during the drying operation is equal to or greater than the second threshold value, the control unit controls the switching unit to switch the flow of air in the circulation path so that the air in the circulation path flows through the second branch path.

2. The all-in-one machine of claim 1, comprising:

an inflow path for flowing water into the container;

an inflow valve for opening and closing the inflow path;

an outflow path for flowing out water in the container; and

An outflow valve for opening and closing the outflow path,

when the detection value of the temperature sensor in the drying operation is smaller than a first threshold value, the control part controls the opening and closing of at least one of the inflow valve and the outflow valve to empty the container,

when the detection value of the temperature sensor in the drying operation is equal to or greater than the second threshold value, the control unit controls the opening/closing of at least one of the inflow valve and the outflow valve to store water into the container.

3. The washing and drying integrated machine according to any one of claims 1 to 2, characterized in that,

when the detected value of the temperature sensor during the drying operation is equal to or greater than the first threshold value and less than the second threshold value for a predetermined time, the control unit controls the flow of air in the circulation path so that the air circulates so as to pass through the water in the container.

4. The washing and drying integrated machine according to any one of claim 1 to 3, wherein,

when the detection value of the temperature sensor during the drying operation is reduced from the second threshold value or more to less than the first threshold value, the control unit controls the flow of air in the circulation path so that the air circulates so as not to pass through the water in the container.