JP2014094202A - Washing and drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drum type washing and drying machine which achieves drying performance with good efficiency and energy saving.SOLUTION: Control means detects a cooling medium 37 temperature at a cooling medium temperature sensor 39 in a heat pump device 30 at the starting time of one of a washing step, a rinsing step and a dewatering step. When the cooling medium 37 temperature is equal to or lower than a predetermined temperature, and when an operation course in which a preset water temperature value is equal to or higher than a predetermined water temperature value is selected at an input unit 14, the control means raises the cooling medium 37 temperature to equal to or higher than the predetermined temperature by making a compressor 32 rotate at low speed or by only energizing the compressor 32, and shifts to a drying step.

Description

  The present invention relates to a washing / drying machine having a laundry washing function and a drying function.

  Conventionally, this type of washing and drying machine has been proposed to dry clothes by dehumidifying and heating the air in the drum using a heat pump device and supplying the air again into the drum (for example, Patent Documents). 1).

  FIG. 6 is a partial schematic view of a longitudinal sectional view of a conventional washing and drying machine described in Patent Document 1. As shown in FIG.

  In FIG. 6, an outer tub 52 that is swingably supported in the housing 51 is disposed so as to rise forward, and a drum 53 is rotatably disposed in the outer tub 52. The drum 53 is rotationally driven by a motor 54. A heat pump device 55 is disposed in the upper space between the casing 51 and the outer tub 52.

  The heat pump device 55 includes a heat pump device outer shell 56, a compressor 57, a heat absorber 58, a decompressor 59, and a radiator 60. The bottom surface of the heat pump device outer shell 56 is inclined upward along the outer tub 52, and a dehumidified water drain port 61 is provided in the bottom inclined portion of the heat pump device outer shell 56. The dehumidified water drain port 61 and the outer tub 52 are connected to each other. The dehumidified water drain passage 62 is connected. The outer tub 51 and the heat pump device 55 are connected by a duct 63 to form a circulation air passage 64, and a heat absorber 58 and a radiator 60 are arranged in the circulation air passage 64. A blower 65 is provided behind the heat pump device 55.

  The heat pump device 55 is connected by piping or the like and is filled with a refrigerant. The refrigerant is changed to a high temperature and a high pressure by the compressor 57, heat is exchanged with the outside by the radiator 60, and heat is given to the outside to liquefy. Thereafter, the pressure is reduced to low pressure by the decompressor 59, and heat exchange with the outside is performed by the heat absorber 58 placed next, and the outside heat is taken and vaporized. The vaporized refrigerant returns to the compressor 57 to form a series of refrigeration cycles.

  And the lint filter 66 is arrange | positioned in the upstream vicinity of the heat absorber 58, and the yarn waste generated from the laundry at the time of drying is collected.

  In the above configuration, the air circulates in the order of the outer tub 52, the heat absorber 58, the radiator 60, and the outer tub 52 in the circulation air passage 64 by the operation of the blower 65. By the operation of the compressor 57, air is heated by the radiator 60, and the heated air is supplied from the outer tank 52 to the drum 53. Then, the air that has been moistened due to moisture from the clothes in the drum 53 exits from the drum 53 to the outer tub 52 and is supplied to the heat absorber 58 again. Here, the air is cooled and dehumidified, and dehumidified water is generated. The generated dehumidified water is naturally drained from the dehumidified water drain port 61 to the outer tub 52 through the dehumidified water drain passage 62 and is discharged to the outside through the drain path 67.

JP 2010-106 A

  However, in the conventional configuration, in order to keep the refrigerant pressure appropriately, the rotation speed of the compressor is controlled according to the refrigerant temperature and the like, and at the start of operation, it may be away from the ideal refrigeration cycle. Therefore, it is desirable to set the compressor speed high at the start of operation and reach the ideal refrigeration cycle as early as possible, but in the heat pump device when the ambient temperature where the washing dryer is installed is low In some cases, for example, in the case of an operation course using hot water, if the clothes warmed by washing are dehydrated, the hot air reaches the heat pump device, and the refrigerant is contained in the compressor. It may liquefy and accumulate. When the drying operation is started in these states, there is a problem that the performance of the heat pump device cannot be exhibited as predetermined.

  The present invention solves the above-mentioned conventional problems, and the ambient temperature is low, and during the washing to drying operation using hot water, the compressor is preliminarily operated in the washing process to increase the refrigerant temperature, An object of the present invention is to provide a washing and drying machine in which the performance of the heat pump device can be efficiently exhibited as prescribed by increasing the number of rotations of the compressor at the start of the drying process, and the energy saving performance can also be increased. It is.

  In order to solve the above-described conventional problems, a washing and drying machine of the present invention includes a washing machine body, a rotating drum that houses clothing, and a water tank that is housed in the washing machine body and rotatably includes the rotating drum. , Generating drying air to be supplied into the rotary drum, and detecting a temperature of the refrigerant, a heat pump device in which a compressor, a radiator, a decompressor, and a heat absorber are connected by a pipe filled with the refrigerant. Refrigerant temperature sensor, heating means for heating the compressor, circulation air passage for connecting the water tank and the heat pump device to circulate drying air, air blowing means for blowing air to the circulation air passage, operation course, etc. And an input unit that inputs and sets the contents of the process, and a control unit that sequentially controls a series of processes such as washing, rinsing, dehydration, and drying, and the temperature detected by the refrigerant temperature sensor is a predetermined temperature. In And, when the set water temperature value in the input unit is operating programs over the predetermined water temperature value is selected, is to shift to the drying process after heating the compressor by said heating means.

  The drum-type washing and drying machine of the present invention includes a washing machine body, a rotating drum that houses clothes, a water tank that is housed in the washing machine body and encloses the rotating drum, and a rotating drum. A heat pump device that generates drying air to be supplied and is connected to a compressor, a radiator, a decompressor, and a heat absorber by piping filled with a refrigerant, a heating unit that heats the compressor, and the water tank Process contents such as a circulation air passage for connecting the heat pump device to circulate drying air, an air passage temperature sensor for detecting the temperature of the circulation air passage, a blowing means for blowing air to the circulation air passage, and an operation course And an input unit for sequentially setting a series of processes such as washing, rinsing, dehydration, and drying, and the control means detects a temperature detected by the air path temperature sensor at a predetermined temperature or lower. And the input If the set in part coolant temperature value operation course of more than a predetermined temperature value has been selected, is to shift to the drying process after heating the compressor by said heating means.

  As a result, even when washing with warm water during washing, the refrigerant in the heat pump cycle can be retained, and the heat pump cycle can be quickly brought up to an optimal state to improve the drying performance at the start of the drying operation. Can do.

  The washing / drying machine of the present invention performs the preliminary operation of the compressor before the drying process and warms the compressor and the refrigerant in advance, so that the performance of the heat pump device can be exhibited as predetermined.

The longitudinal cross-sectional view of the drum type washing-drying machine in Embodiment 1 of this invention Internal perspective view from the rear of the drum type washing and drying machine The top view which shows the structure of the heat pump apparatus of the drum type washing-drying machine Control flow chart of the compressor before the drying process of the drum type washing and drying machine Schematic diagram of a washing and drying machine in Embodiment 2 of the present invention The figure which partially modeled the longitudinal section of the conventional drum type washing and drying machine

  The washing / drying machine of the present invention includes a washing machine main body, a rotating drum that houses clothing, a water tank that is accommodated in the washing machine main body and rotatably includes the rotating drum, and a drying drum that is supplied into the rotating drum. A heat pump device that generates air and connects a compressor, a radiator, a decompressor, and a heat absorber with a pipe filled with a refrigerant, a refrigerant temperature sensor that detects the temperature of the refrigerant, and heats the compressor Heating means, a circulation air passage that circulates drying air by connecting the water tank and the heat pump device, an air blowing means that blows air to the circulation air passage, and an input unit that inputs and sets process contents such as an operation course Control means for sequentially controlling a series of steps such as washing, rinsing, dehydration, and drying, and the control means has a temperature detected by the refrigerant temperature sensor equal to or lower than a predetermined temperature, and the input section Set water temperature When the operation course of more than a predetermined temperature value has been selected, is to shift to the drying process after heating the compressor by said heating means.

  Thereby, the performance of a heat pump apparatus can be exhibited efficiently as predetermined, and energy saving performance can be made high.

  The said structure WHEREIN: The temperature detection by the said refrigerant | coolant temperature sensor is good also as being performed before the start of the said dehydration process.

  Thereby, since temperature detection is performed before the start of the dehydration process, it can be determined whether or not the compressor needs to be heated earlier than the drying process. Therefore, it can transfer to drying operation efficiently. Furthermore, the temperature in the water tank is high due to the washing water in the water tank at a predetermined temperature or higher. When the rotating drum rotates at a high speed during the dehydration process, the rotating drum serves as a blowing means, and warm air in the water tank is introduced into the heat pump device from the circulation air passage. By detecting the temperature with the refrigerant temperature sensor before the start of the dehydration process, the temperature can be detected without being affected by the temperature of the washing water, and the temperature of the refrigerant can be accurately detected.

  The said structure WHEREIN: The temperature detection by the said refrigerant | coolant temperature sensor is good also as being performed before the start of the said washing | cleaning process.

  Thereby, it can be judged whether heating of a compressor is required earlier than a drying process. Therefore, it can transfer to drying operation efficiently. Further, the temperature can be detected by the refrigerant temperature sensor before the warm washing water in the washing process is used, and the temperature can be detected without being affected by the temperature of the washing water. For this reason, it is possible to accurately detect the temperature of the refrigerant.

In addition, the washing and drying machine of the present invention generates a rotating drum that houses clothing, a water tank that is housed in the washing machine body and encloses the rotating drum, and drying air supplied to the rotating drum. A compressor, a radiator, a pressure reducer, and a heat absorber connected to each other by a pipe filled with a refrigerant, a heating unit that heats the compressor, the water tank, and the heat pump device. A circulation air passage for circulating the drying air; an air passage temperature sensor for detecting the temperature of the circulation air passage; a blowing means for blowing air to the circulation air passage; and an input unit for inputting and setting process contents such as an operation course; Control means for sequentially controlling a series of steps such as washing, rinsing, dehydration, and drying, and the control means has a temperature detected by the air path temperature sensor equal to or lower than a predetermined temperature, and is connected to the input unit. Set water temperature When the operation course of the above water temperature value is selected, is to shift to the drying process after heating the compressor by said heating means.

  Thereby, the performance of a heat pump apparatus can be exhibited efficiently as predetermined, and energy saving performance can be made high.

  The said structure WHEREIN: The temperature detection by the said air path temperature sensor is good also as being performed before the start of the said dehydration process.

  Thereby, since temperature detection is performed before the start of the dehydration process, it can be determined whether or not the compressor needs to be heated earlier than the drying process. Therefore, it can transfer to drying operation efficiently. Furthermore, the temperature in the water tank is high due to the washing water in the water tank at a predetermined temperature or higher. When the rotating drum rotates at a high speed during the dehydration process, the rotating drum serves as a blowing means, and warm air in the water tank is introduced into the heat pump device from the circulation air passage. By detecting the temperature with the air path temperature sensor before the start of the dehydration process, the temperature can be detected without being affected by the temperature of the washing water, and the temperature of the air path can be accurately detected.

  The said structure WHEREIN: The temperature detection by the said air path temperature sensor is good also as being performed before the start of the said washing | cleaning process.

  Thus, the temperature can be detected by the air path temperature sensor before the warm washing water in the washing process is used, and the temperature can be detected without being affected by the temperature of the washing water. For this reason, it is possible to accurately detect the temperature of the refrigerant.

  In the above configuration, the heating means may be performed by rotating the compressor at a low speed.

  As a result, even when washing with warm water during washing, the refrigerant in the heat pump cycle can be retained, and the heat pump cycle can be quickly brought up to an optimal state to improve the drying performance at the start of the drying operation. Can do.

  The said structure WHEREIN: The said heating means is good also as being performed by making only the electricity supply of the said compressor.

  Thereby, a refrigerant | coolant is heated by electricity supply of a compressor, the performance of a heat pump apparatus can be exhibited efficiently as predetermined, and energy saving performance can be made high.

  Hereinafter, embodiments of the invention will be described with reference to the drawings. Further, the present invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a drum-type washing / drying machine according to Embodiment 1 of the present invention, and FIG. 2 is an internal perspective view from the rear.

1 and 2, the rotary drum 1 is formed in a bottomed cylindrical shape, and a large number of water passage holes 2 are provided on the entire surface of the outer periphery, and are rotatably disposed in the water tank 3. A rotation axis (rotation center axis) 4 is provided at the rotation center of the rotary drum 1 in the inclination direction, and the axial center direction of the rotation drum 1 is inclined downward from the front side toward the back side. A motor 5 attached to the rear surface of the water tank 3 is connected to the rotary shaft 4 to drive the rotary drum 1 to rotate in the forward and reverse directions. A plurality of protruding plates 6 for stirring clothes are provided on the inner wall surface of the rotating drum 1.

  An opening provided in the upward inclined surface on the front side of the water tank 3 is covered with a lid 7 so as to be freely opened and closed, and the laundry 7 can be opened and closed by opening the lid 7 so that the laundry can be taken in and out of the rotary drum 1. .

  The aquarium 3 is supported in an anti-vibration manner by a vibration isolating member 9 below the washing machine body 100, and one end of the drainage path 10 is connected to the lower part of the aquarium 3, and the other end of the drainage path 10 is connected to a drain valve (drainage). Means) 11 is connected to drain the washing water in the water tank 3. The water supply valve (water supply means) 12 supplies water into the water tank 3 through the water supply path 13.

  A control device 50 having a control means (not shown) is disposed at the lower front portion of the washing machine body 100 and controls the motor 5, the drain valve 11, the water supply valve 12, the heat pump device 30, the blower 40, and the like. ing.

  In the present embodiment, the rotary shaft 4 is provided in the tilt direction at the rotation center of the rotary drum 1, and the axial center direction of the rotary drum 1 is tilted downward from the front side toward the back side. However, they may be arranged in the horizontal direction.

  The motor 5 is constituted by a direct current brushless motor or the like, and is controlled by a control means, a motor drive circuit (not shown) or the like so as to be rotated in the forward and reverse directions and variable in rotation speed, and a signal from a current detection circuit (not shown). Thus, the load applied to the motor 5, that is, the amount of laundry is detected.

  For drying clothes, a heat pump device 30 that generates drying air to be supplied into the rotary drum 1 is used, and is circulated through the circulation air supply air passage 41, the circulation exhaust air passage 43, the blower 40, the rotation drum 1, and the heat pump device 30. An air passage 47 is formed.

  The blower 40 can control the rotational speed of the fan by a control means, a fan drive circuit (not shown), and the like, and can set the rotational speed according to the application. Moreover, although the heat pump apparatus 30 is installed in the lower part of the washing machine main body 100, you may install in the upper part, and although the air blower 40 is directly connected with the heat pump apparatus 30, even if installed in the distant place Good.

  In the drying step, the high-temperature and low-humidity drying air heated by the heat pump device 30 is sent into the rotary drum 1 through the circulating air supply passage 41 and the blowout port 42 by the blower 40, and comes into contact with the wet laundry on the rotary drum 1. To make low-temperature and high-humidity air. This low-temperature, high-humidity air enters the heat pump device 30 from the circulation exhaust air passage 43, is dehumidified and heated in the heat pump device 30, and is sent to the rotating drum 1 again. Is possible.

  A temperature sensor for detecting the air temperature is attached to the circulation air passage 47, and a signal from the suction side temperature sensor 45 installed on the inlet side of the heat pump device 30 and a blowout side temperature sensor installed on the outlet side. By sending a signal from 44 to the control means of the control device 50, air drying is predicted and the remaining time of the drying process is calculated. Specifically, when the difference between the outlet temperature and the inlet temperature decreases and falls below a set value, it is determined that the drying has progressed, and the remaining time is adjusted and the drying operation is stopped.

  A mode such as an operation course and various functions are selected by a user inputting from an input unit 14 provided at the upper front of the washing machine main body 100, and the control device 50 is based on the input information. Displayed on the above display means (not shown) to inform the user.

  FIG. 3 is a plan view showing the configuration of the heat pump device of the drum type washing and drying machine in the embodiment of the present invention.

  The heat pump device 30 is connected to an exhaust air passage connection portion 31a and an air supply air passage connection portion 31b, and a compressor 32, a radiator 33, a decompressor 34, and a heat absorber 35 are provided in the outer shell 31, and these are connected to a pipe. 36 and the like, and a refrigerant 37 is filled therein.

  First, the refrigerant 37 is changed to a high temperature and a high pressure by the compressor 32, and heat is exchanged with the air in the outer shell 31 by the radiator 33 to give heat and the refrigerant 37 liquefies. Thereafter, the pressure is reduced to low pressure by the decompressor 34, heat exchange is performed again with the air in the outer shell 31 by the heat absorber 35 placed next, and the air is dehumidified by removing the heat, and the refrigerant 37 is vaporized. The vaporized refrigerant 37 returns to the compressor 32 to form a series of refrigeration cycles.

  The dehumidified water is drained to the outside by a pump 38 attached to the heat pump device 30. The pump 38 can be attached to a place other than the heat pump device 30 and can be drained naturally without using the pump 38.

  A plurality of refrigerant temperature sensors 39 are attached to the pipe 36, and the temperature of the internal refrigerant 37 can be detected from the temperature of the pipe 36 surface. The compressor 32 can change the number of rotations of the internal cylinder by a control means, a compressor drive circuit (not shown), and the like, and the compressor 32 is connected to the compressor drive circuit according to a signal from the refrigerant temperature sensor 39. The rotation speed can be controlled.

  The refrigerant temperature is detected by the refrigerant temperature sensor 39, but the state of the refrigerant cycle may be grasped by a pressure sensor or the like.

  The refrigerant 37 may be a general refrigerant such as an HFC (hydrofluorocarbon) refrigerant, an HFO (hydrofluoroolefin) refrigerant, or a carbon dioxide refrigerant.

  The operation and action of the drum type washing and drying machine configured as described above will be described below.

  As described above, the pressure between the pressure reducer 34 and the compressor 32 is in a low pressure state, and the pressure drop changes according to the amount of squeezing of the pressure reducer 34 and the rotational speed of the compressor 32. If the rotation speed of the compressor 32 is set to be high immediately after the start of the drying operation, the low pressure side may become a low pressure lower than the ideal value, and therefore the rotation speed of the compressor 32 may be kept low. However, when the rotational speed is low, it is difficult to make a temperature difference of the refrigerant 37, and the circulation amount of the refrigerant 37 is reduced. Therefore, maintaining the low rotational speed for a long time may increase the time required for drying.

  As an example in which the low pressure side becomes a lower pressure than the ideal value, the drum type washing and drying machine is exposed to a low temperature for a long time, and in the washing process of the washing and drying operation, for example, in a washing process of a hot water course using a heater or the like. There is an example of performing washing using warm water. In the washing using warm water, warm air reaches the heat pump device 30 when the clothes warmed in the subsequent process are dehydrated. The warm air warms the refrigerant 37 through the pipe 36, vaporizes, and moves to the compressor 32. Since the compressor 32 often has a large heat capacity and is not easily heated, the moved refrigerant 37 is liquefied and accumulated in the compressor 32. When the compressor 32 is driven in this state, the low pressure side is lower than the ideal value. It is easy to become.

  FIG. 4 is a control flowchart of the compressor before the drying step of the drum type laundry dryer in the embodiment of the present invention.

  Prior to the drying process, a continuous process of washing, rinsing and dehydration, or individual process operations are performed. When the operation course is selected by the user and the operation is started, the refrigerant temperature sensor 39 detects the initial refrigerant temperature To in step S1. If To is equal to or higher than the predetermined temperature Ta (NO in step S1), the compressor 32 is not driven until the drying process is started (step S6).

  If To is equal to or lower than the predetermined temperature Ta (YES in step S1), it is determined in step S2 whether the set water temperature of the driving course selected by the user is equal to or higher than the predetermined temperature. NO) does not drive the compressor 32 until the drying process is started (step S6). If the temperature is equal to or higher than the predetermined temperature (YES in step S2), the current operation status is confirmed (step S3). If washing to dewatering is being performed (YES in step S3), the compressor 32 is set to low speed in step S4. Preliminary operation to rotate with.

  At this time, the timing for detecting the temperature of the refrigerant is before the start of the cleaning process before the washing water is supplied to the water tank 3. Thereby, it can be judged whether heating of a compressor is required earlier than a drying process. Therefore, it can transfer to drying operation efficiently. Further, the temperature can be detected by the refrigerant temperature sensor 39 before the warm washing water in the washing process is used, and the temperature can be detected without being affected by the temperature of the washing water. For this reason, it is possible to accurately detect the temperature of the refrigerant.

  Then, the refrigerant temperature T is detected (step S5), and when the refrigerant temperature rises to Tb or more (YES in step S5), the preliminary operation of the compressor 32 is stopped until the drying process starts (step S6), and the drying process. Move to the sequence.

  With the above control flow, the preliminary operation of the compressor 32 is started from any one of washing, rinsing, and dehydration, and the temperature of the compressor 32 is increased to vaporize the refrigerant 37 liquefied in the compressor 32. The rotational speed of the compressor 32 can be set high at the start of the drying process, and the performance of the heat pump device can be efficiently exhibited as prescribed.

  In the preliminary operation of the compressor, the lower limit number of rotations that can be set by the compressor 32 is maintained, and the compressor 32 is continuously operated with the pressure fluctuation reduced as much as possible. By this operation, the total amount of heat of the refrigerant 37 gradually increases, and the operation can be started at a high rotational speed at the start of the drying process. The compressor 32 is exemplified as a low-speed rotation or heating means.

  Further, in the present embodiment, in the preliminary operation, when the refrigerant temperature reaches a preset temperature, the operation of the compressor 32 is stopped, but a low rotational speed may be maintained until the drying process is started.

  In the present embodiment, the heating means preliminarily operates the compressor at a lower limit rotation speed that can be set. However, without rotating the compressor, the compressor is heated only by energizing to raise the refrigerant temperature. May be. Moreover, it is good also as a structure which provides the heater which heats a compressor and warms a compressor by supplying with electricity to a heater.

  Further, in the present embodiment, the refrigerant temperature sensor 39 detects and determines the refrigerant temperature and proceeds to the next step. However, the signals from the blowout side temperature sensor 44 and the suction side temperature sensor 45 of the circulation air passage 47 The determination may be made by a signal from a temperature sensor (not shown) installed in the drum.

Further, in the present embodiment, it is determined whether or not the water temperature is equal to or higher than the predetermined temperature based on the operation setting information selected and set by the user at the input unit 14. Further, it may be detected from the signal of the suction side temperature sensor 45 that it is not a drying process and that warm air has flown into the circulation air passage 47 to determine whether the water temperature is equal to or higher than a predetermined temperature. .

  Moreover, although the timing which detects the temperature of a refrigerant | coolant was made before the start of a washing | cleaning process, it is good also before the start of a dehydration process. Thereby, since temperature detection is performed before the start of the dehydration process, it can be determined whether or not the compressor needs to be heated earlier than the drying process. Therefore, it can transfer to drying operation efficiently. Furthermore, the temperature in the water tank is high due to the washing water in the water tank at a predetermined temperature or higher. When the rotating drum rotates at a high speed during the dehydration process, the rotating drum serves as a blowing means, and warm air in the water tank is introduced into the heat pump device from the circulation air passage. By detecting the temperature with the air path temperature sensor before the start of the dehydration process, the temperature can be detected without being affected by the temperature of the washing water, and the temperature of the air path can be accurately detected.

  As described above, in the present embodiment, before starting the drying process, the refrigerant temperature is detected in advance by the refrigerant temperature sensor, the refrigerant temperature is equal to or lower than the predetermined temperature, and the set water temperature value is set in the input unit. When an operation course with a predetermined water temperature value or higher is selected, the refrigerant temperature is raised to a predetermined temperature or higher by rotating the compressor at a low speed or by energizing only, and the process proceeds to the drying process. Thus, the performance of the heat pump device can be efficiently exhibited as prescribed, and the energy saving performance can be enhanced.

(Embodiment 2)
FIG. 5 is a schematic diagram of a washing / drying machine according to Embodiment 2 of the present invention. The object which a temperature sensor detects, Embodiment 1 temperature detection timing, and a heating means differ from Embodiment 1. Hereinafter, a different part from Embodiment 1 is demonstrated.

  The circulation air passage 47 is provided with a blowout side temperature sensor 44 and a suction side temperature sensor 45 that detect the temperature of the drying air flowing through the circulation air passage 47. The blowout side temperature sensor 44 and the suction side temperature sensor 45 are exemplified as air path temperature sensors. The blowout-side temperature sensor 44 is provided in the circulation air passage 47 before passing through the blower 40 and being supplied to the water tank 3. The suction side temperature sensor 45 is provided in the circulation air passage 47 before being discharged from the water tank 3 and supplied to the heat absorber 35. From the outputs of the blowout side temperature sensor 44 and the suction side temperature sensor 45, the dry state of the laundry such as clothes in the rotary drum 1 is detected.

  A heater 130 for heating the compressor 32 is provided below the compressor 32. The heater 130 is attached so as to surround a casing that is an outer shell of the compressor 32. The heater 130 may be attached so as to heat from the upper part to the lower part of the compressor 32 in order to quickly raise the temperature of the compressor 32.

  A washing water heater 15 for warming the washing water is provided below the water tank 3. When an operation course using washing water higher than the water temperature is washed, the washing water is heated by energization of the washing water heater 15.

  Hereinafter, the operation and action of the present embodiment will be described.

A user selects a driving course via the input unit 14, and presses a start button to start washing. The washing water is supplied into the water tank 3 through the detergent case. If the water temperature of the driving course selected by the user is higher than a predetermined temperature, for example, a 40 degree course, the washing water is heated by energization of the washing water heater 15. When the washing water corresponding to the amount of laundry is supplied, the water supply is stopped. When the rotating drum 1 is rotated by the motor 5, the laundry is lifted by the protruding plate 6 and is struck downward from above the rotating drum 1. Due to the mechanical action when struck, the laundry is cleaned. When a predetermined cleaning time has elapsed, the cleaning process ends.

  Thereafter, the drain valve 11 is opened, and the washing water is drained. At this time, the blowing side temperature sensor 44 and the suction side temperature sensor 45 perform temperature detection. When drainage is completed, the process proceeds to an intermediate dehydration process. In the intermediate dehydration step, the rotating drum 1 rotates at a high speed such that the laundry is stuck to the inner wall of the rotating drum 1 by centrifugal force. At this time, the high-speed rotation of the rotary drum 1 serves as a blowing means, and warm air in the water tank 3 moves into the circulation air passage 47. The warm air that has entered the circulation air passage 47 reaches the heat pump device 30 and warms the pipe 36 located in the circulation air passage 47. The refrigerant in the circulation air passage 47 is warmed and vaporized because of its relatively small heat capacity, and moves to the compressor 32. However, since the compressor 32 has a large heat capacity and does not easily rise in temperature, the refrigerant that has moved to the compressor 32 is liquefied in the compressor 32. Such a phenomenon is likely to occur when the air path temperature detected before the high-speed rotation of the rotary drum 1 in the compressor 32 has a difference of 10 degrees or more from the washing water temperature of the selected operation course. Therefore, in the case where the temperature is lower than 30 degrees in the present embodiment, by heating the heater 130, the compressor 32 is heated and the liquefaction of the refrigerant in the compressor 32 is prevented.

  In the present embodiment, the air path temperature sensor has the blowing side temperature sensor 44 and the suction side temperature sensor 45, but temperature detection is possible with either one.

  Further, the temperature detection by the blowout side temperature sensor 44 and the suction side temperature sensor 45 may be performed before the step of washing the washing water. More preferably, it is performed before the washing water is supplied. Thereby, before the warm washing water in the washing process is used, the temperature can be detected by the air path temperature sensor (the blowing side temperature sensor 44 and the suction side temperature sensor 45), and the influence of the temperature of the washing water. The temperature can be detected without receiving. For this reason, it is possible to accurately detect the temperature of the refrigerant.

  In addition, the temperature is detected before the intermediate dehydration step, but the temperature may be detected before the final dehydration step performed following the washing step and the rinsing step.

  As described above, the drum-type washing and drying machine according to the present invention can efficiently demonstrate the performance of the heat pump device as prescribed by preliminarily operating the compressor before the start of the drying process, and can also improve the energy saving performance. Therefore, it can be applied to other uses such as clothes dryers and washing dryers having a drying function.

DESCRIPTION OF SYMBOLS 1 Rotating drum 3 Water tank 5 Motor 14 Input part 30 Heat pump apparatus 32 Compressor 33 Radiator 34 Decompressor 35 Heat absorber 36 Piping 37 Refrigerant 39 Refrigerant temperature sensor 40 Blower 44 Blow-off side temperature sensor 45 Suction side temperature sensor 47 Circulation air path 100 Washing machine body 130 Heater 139 Temperature detection means (airway temperature sensor)

Claims (8)

A rotating drum for housing clothing;
A water tub accommodated in the washing machine main body and rotatably enclosing the rotating drum;
A heat pump device that generates drying air to be supplied into the rotating drum, and is connected to a compressor, a radiator, a decompressor, and a heat absorber by a pipe filled with a refrigerant;
A refrigerant temperature sensor for detecting the temperature of the refrigerant;
Heating means for heating the compressor;
A circulation air passage for connecting the water tank and the heat pump device to circulate drying air;
A blowing means for blowing air to the circulation air passage;
An input unit for inputting and setting process contents such as an operation course;
A control means for sequentially controlling a series of steps such as washing, rinsing, dehydration, and drying;
When the temperature detected by the refrigerant temperature sensor is equal to or lower than a predetermined temperature and an operation course in which a set water temperature value is equal to or higher than a predetermined water temperature value is selected by the input unit, the control means is A washing dryer that heats the compressor and then moves on to the drying process. The temperature detection by the said refrigerant | coolant temperature sensor is a washing-drying machine of Claim 1 performed before the start of the said dehydration process. The washing / drying machine according to claim 2, wherein the temperature detection by the refrigerant temperature sensor is performed before the start of the washing process. A rotating drum for housing clothing;
A water tub accommodated in the washing machine main body and rotatably enclosing the rotating drum;
A heat pump device that generates drying air to be supplied into the rotating drum, and is connected to a compressor, a radiator, a decompressor, and a heat absorber by a pipe filled with a refrigerant;
Heating means for heating the compressor;
A circulation air passage for connecting the water tank and the heat pump device to circulate drying air;
An air path temperature sensor for detecting the temperature of the circulating air path;
A blowing means for blowing air to the circulation air passage;
An input unit for inputting and setting process contents such as an operation course;
A control means for sequentially controlling a series of steps such as washing, rinsing, dehydration, and drying;
When the temperature detected by the air path temperature sensor is equal to or lower than a predetermined temperature and an operation course in which the set water temperature value is equal to or higher than the predetermined water temperature value is selected by the input unit, the control means is controlled by the heating means. A laundry dryer that heats the compressor and then proceeds to a drying process. The laundry dryer according to claim 4, wherein temperature detection by the air path temperature sensor is performed before the start of the dehydration process. The washing dryer according to claim 5, wherein the temperature detection by the air path temperature sensor is performed before the start of the cleaning process. The washing and drying machine according to any one of claims 1 to 6, wherein the heating means is performed by rotating the compressor at a low speed. The washing and drying machine according to any one of claims 1 to 6, wherein the heating means is performed by energizing only the compressor.