JP2998118B2 - Futon dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a futon dryer for drying a futon or the like by supplying warm air to a breathable drying mat or sheet.

[0002]

2. Description of the Related Art FIG. 30 is an external perspective view of a conventional futon dryer, and FIG. 31 is a cross-sectional view showing a dry state of the conventional futon dryer. In FIG. 30, A is the main body of the futon dryer. B is an intake port provided on one side surface of the main body 1, C is a timer knob, D is a changeover switch, and E is a pest control switch. The changeover switch D has first and second setting positions for setting the temperature of the hot air to two levels of high and low. Although not shown, a discharge port communicating with the electric blower is provided on the other surface side of the main body A, and a heater for heating the wind of the electric blower to generate hot air and a warm air heated by the heater are provided inside. Is provided. S in FIG. 31 is a sheet, K1, K
2 is a comforter and a mattress.

In a conventional futon dryer having such a structure, as shown in FIG. 31, a breathable sheet S having one end connected to a discharge port of a main body A is interposed between the comforter K1 and the mattress K2. In the case of a general "cotton" futon, when the changeover switch D is set to the first set position at a high temperature and the timer knob C is turned, the timer motor and the fan rotate. Then, the heater is energized and hot air is sent to the sheet S to dry the quilt K1 and the mattress K2 when the average surface temperature of the sheet S is about 70 degrees.
When the pest control switch E is turned ON, the surface temperature of the sheet S becomes constant at an average of 65 ° C., and the “cotton” inside the futon also becomes 60 ° C. or more, which is the temperature for controlling ticks.

When drying the "feather" futon, the changeover switch D is set to the second setting position at a low temperature, and then the hot air is sent to the sheet S by the same operation as described above. The internal temperature of the futon at this time is maintained at an average hot air temperature of about 45 degrees so as not to affect "feathers". Then, when the pest control switch E is turned ON, the cover (futon cover) on the surface of the "feather" futon is about 50 to 55 degrees, but the inside of the futon is controlled so as not to exceed 50 degrees. In this way, the duvet is dried and pests are controlled so as not to deteriorate the “feather” inside the duvet.

[0005]

As described above, in the conventional futon dryer, the duvet is dried and pests are controlled so as not to deteriorate the internal "feather".
However, when the material of the futon is “cotton” and “feather”, the changeover switch D and the timer knob C
Must be switched manually. Therefore, not only the handling operation is extremely troublesome and troublesome, but also there is a possibility that the manual switching operation or setting operation is erroneously performed. In particular,
If you mistake the drying operation of the "feather" futon, the "feather" inside
However, there is a problem in that the quality of the product deteriorates, and expensive "feather" futons are disposed of.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the conventional futon dryer. The blowing temperature corresponding to the material of the futon is automatically set, and the drying is automatically performed at an appropriate temperature. It is an object of the present invention to realize a futon dryer having various features such as a futon dryer.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a futon dryer which heats air sent by an electric blower with a heater and introduces the air into a permeable drying mat to dry a futon or the like. An air pressure sensor that detects the air pressure on the side, a futon quality determination unit that determines the quality of the futon based on the detection information of the air pressure sensor, and a drying condition is obtained based on the determination result of the futon quality determination unit. And a control device for controlling the electric blower and the heater.

Further, in the present invention, in a futon dryer for heating air blown by an electric blower with a heater and introducing the air into a breathable drying mat to dry a futon or the like, the electric blower and the heater are de-energized. A temperature sensor for detecting the temperature on the surface of the futon after the above, or the temperature of air in contact with the surface of the futon, and futon quality determining means for determining the quality of the futon based on the rate of decrease in the temperature detected by the temperature sensor. And a controller for controlling the electric blower and the heater based on the drying condition based on the result of the determination by the futon quality determining means.

Further, the present invention provides a futon dryer for heating air introduced by an electric blower with a heater and introducing the air into a breathable drying mat to dry a futon or the like. Current sensor for detecting the temperature, a futon quality determining means for determining the quality of the futon based on the detection information of the current sensor, and a drying condition based on the determination result of the futon quality determining means, and an electric blower based on the drying condition. And a control device for controlling the heater.

[0010] Further, the present invention provides a futon dryer in which air blown by an electric blower is heated by a heater and introduced into a breathable drying mat to dry a futon or the like. A humidity sensor that senses humidity,
Futon quality determining means for determining the quality of the futon based on the detection information of the humidity sensor, and a control device for determining a drying condition based on the determination result of the futon quality determining means and controlling the electric blower and the heater based on the drying condition And a futon dryer comprising:

[0011] The display device may further include a display, and the control device may be configured to display the estimated required drying time on the display.

Further, the control device constitutes a futon dryer for displaying the elapsed time of the drying time on a display.

[0013]

When the start key is pressed after inserting the drying mat between the bedding and the comforter, the electric blower and the heater are turned on and the timer is set. By driving the electric blower, for example, the air pressure sensor of the second sensor is ready for sensing. When the set time of the timer comes, the energization of the electric blower and the heater is turned off. At the same time, a signal detected by the air pressure sensor is output to the arithmetic processing unit through the second detection unit. The arithmetic processing unit uses this signal, the time from when the air pressure detected by the air pressure sensor is energized to the electric blower or when the energization is stopped to when the atmospheric pressure or a predetermined air pressure is reached, or when the electric blower is energized or The time until the air pressure at the time of stopping power supply or after the power supply is stopped is reduced to a predetermined ratio with respect to the air pressure at the time of normal power supply is counted. Then, the quality of the futon is determined based on the detection result, and the drying control is performed based on the drying conditions obtained based on the quality.

When the cotton futon is determined based on the determination result of the arithmetic processing unit, the heating temperature of the heater is set to 70 ° C. Then, for example, the required drying time calculated by the liquid crystal display of the operation unit is displayed as a numerical value, and the electric blower and the heater are turned on again to restart the drying. At the same time, the numerical value displayed on the liquid crystal display device is counted down, and the remaining drying time is displayed. Thereafter, when the count-out is completed, the electric blower and the heater are automatically stopped. On the other hand, if the arithmetic processing unit determines that the temperature is other than the cotton duvet, the blowing temperature is set to 60 ° C. suitable for a wool duvet or a duvet. After that, drying is advanced by the same operation as when the set temperature is 70 ° C. Then, the blowing temperature of the electric blower is controlled to a temperature appropriate for the quality of the futon, and the drying process of the futon is completed.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
FIG. 2 is a block diagram common to all embodiments of the present invention. Hereinafter, prior to the description of each embodiment described below,
The overall configuration will be described with reference to FIGS.

1 and 2, reference numeral 1 denotes a main body of a futon dryer. Reference numeral 2 denotes an outside air inlet provided at the rear of the main body 1, and reference numeral 3 denotes an outlet provided at the front. The suction port 2 and the discharge port 3 are communicated with each other by an air passage 4 provided inside the main body 1. 5 is an electric blower, 6 is a heater. The electric blower 5 includes an electric motor and a fan as shown in the drawing, and is disposed in the air passage 4 close to the suction port 2, and the heater 6 is provided in the air passage 4 on the downstream side of the electric blower 5. D1 is a first sensor. The first sensor D1 is disposed in the vicinity of the discharge port 3 and is heated by the heater 6 and is supplied to the air passage 4
The temperature of the hot air blown out to is constantly detected.

Reference numeral 8 denotes a control device provided in the main body 1. 9 is a detection unit in the control device 8, 10 is an arithmetic processing unit, and 11 is a control unit. The detecting section 9 includes a first detecting section 9a and a second detecting section 9b as shown in FIG. 2, and the first sensor D1 is connected to the first detecting section 9a. Also, the second
A second sensor D2 composed of a plurality of sensor groups described later is connected to an input end of the detection unit 9b, and detection signals such as density, airflow resistance, and weight of the futon detected by various sensors are inputted. Quality (type) is determined. In the present invention, as shown by the block in FIG.
And a closed loop control system for feeding back each detection signal of the second sensor D2 to the input side of the control device 8.

The arithmetic processing unit 10 is constituted by a so-called microcomputer MC having a memory and various arithmetic functions such as measurement, comparison operation, and judgment. In particular, the arithmetic processing unit 10 determines the quality of the futon by comparing it with a reference value stored in advance, and infers the remaining required drying time and blowing temperature from the condition proposition and the fact. The control unit 11 controls the air flow and the temperature of the electric blower 5 and the heater 6 based on the output of the first detection unit 9a, displays the required drying time and automatically stops the operation, and controls the output by the second detection unit 9b. The drying operation of the futon is performed under the drying conditions corresponding to the quality of the futon based on the determination and the inference result of the arithmetic processing unit 10. In addition, although not shown in detail, an operation unit 15 including various operation keys for setting, a liquid crystal display, an LED display, and the like is provided on a front surface, an upper surface, or the like of the main body 1. 25 is a connecting hose, 2
6 is a drying mat, and 27 and 28 are comforters and mattresses.

As shown in FIG. 1, the second sensor D2 includes an air pressure sensor D22, a temperature sensor D23, and a current sensor D23.
24, comprising a resistance sensor D27. Air pressure sensor D
Reference numeral 22 is attached to the air blow path 4 of the electric blower 5 and the like, and detects the air pressure of the blown hot air. The temperature sensor D23, the current sensor D24, and the resistance sensor D27 are mainly composed of the drying mat 26.
And the temperature of the drying mat 26 and the weight of the drying mat 26 covered with the futon 27 are detected.

By the way, cotton has conventionally been used as a material for futons used in ordinary households, and futons have been made by wrapping cotton with a futon skin made of cloth such as cotton or synthetic fiber. However,
Recently, cotton-like synthetic fibers, wool or feathers,
Used as a material for futons. Animal fibers, such as wool and feathers, are known to degrade fibrous materials when heated to a temperature exceeding 60 ° C while containing water, as described for conventional equipment. ing. Therefore, measures have been taken to prevent the quality of normal wool duvets and duvets from drying at a lower temperature than cotton duvets.

On the other hand, when the futon is dried by the futon dryer, when the futon contains a large amount of water, as shown in FIGS. 3 and 4, the temperature of the futon is as high as about 50 ° C. at the maximum. Drying is carried out at a temperature that does not change. The solid line in FIG. 3 shows the characteristic when the water content is low, and the broken line shows the characteristic curve when the water content is high. In general, since the cotton bedding has a high fiber density inside, it is heavy and has high ventilation resistance, so that the diffusion of moisture becomes inactive and the humidity tends to increase. On the contrary,
Since wool and duvet have a coarser fiber density than cotton duvet, they have low airflow resistance and light weight as shown in the following table.

[0022]

[Table 1]

Here, the weight of the futon is W (g), the area of the futon is S (cm ² ), the ventilation resistance of the futon is R (g / cm ² ), and the pressure in the drying mat is P (g / cm ² ). ² ), the following relationship (1) holds. P = [(W / S) + R] (g / cm ² ) (1) Assuming that the load resistance of the electric blower 5 is F, the load resistance F is substantially proportional to the pressure P in the drying mat. When the load resistance F fluctuates, the warm air generated by the blower electric blower 5 and heated by the heater 6 is dried by the drying mat 26 and the futons 27 and 28.
For example, the following various physical changes are involved in the airflow blowing system including the ventilation path until the airflow is diffused to the atmosphere. The internal pressure P of the drying mat changes. The current flowing through the electric blower changes.

On the other hand, FIGS. 5 and 6 show the relationship between the drying time of the futon, the moisture content of the futon, and the blowing temperature obtained from the experimental results of the inventor. The vertical axis in FIG. 5 is the time required for drying and the horizontal axis is the moisture content [[(water content) / (weight of futon)] ×
100], the vertical axis in FIG. 6 represents the blowing temperature (temperature on the drying mat), and the horizontal axis represents the drying time. According to FIG. 5, the drying time t
Is found to be proportional to the synergistic change between the water content w and the weight g of the futon. Further, according to the characteristic curve of FIG. 6, it is also shown that the temporal change rate of the blowing temperature has an inverse relationship with the magnitude of the moisture content w of the futon.

However, the quality (type) of the futon and the blowing temperature and the drying time with respect to the weight and wetness shown in Table 1 are closely related to each other and have a complicated relationship. Is difficult. Therefore, in the present invention, a method of inferring the blowing temperature and the drying time according to the rules shown in Table 2 below is employed.

[0026]

[Table 2]

According to the present invention, the physical change amount is determined using various sensors such as the air pressure sensor D22 to determine the quality of the futon, and the relationship between the determined futon quality and the temperature change rate is shown in Table 2. In this configuration, the futon is dried by inferring the optimal blowing temperature and drying time of the electric blower 5 shown in FIG.

Embodiment 1 As described above, in the process of drying a futon containing water, the airflow resistance changes depending on the quality of the futon and the amount of water contained in the futon. The change in air pressure (static pressure + dynamic pressure: the dynamic pressure is the pressure generated by the flow of air generated by the electric blower 5) in the air flow path of the warm air from the electric blower 5 to the drying mat 26, that is, the pressure loss is futon It varies depending on the quality and wetness of the material. In the first embodiment, attention is paid to this point, and an air pressure sensor D22 for detecting a change in air pressure in the air passage is used as the second sensor D2.

FIG. 7 is an explanatory view of the configuration of the first embodiment of the present invention. The same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals. An air pressure sensor D22 is provided in the air passage 4 and has a pressure receiving surface exposed in the air passage 4 downstream of the electric blower 5.
It is. The air pressure sensor D22 detects a change in the pressure state in the air passage 4 and outputs it to the detection unit 9 in the control device 8. FIG. 8 is a block diagram showing the functions of the first embodiment.
In the first embodiment thus configured, the electric blower 5
Is stopped at a predetermined timing. Then, the air pressure characteristic in the air passage 4 at the time of stop or energization or the air pressure characteristic in the air passage 4 at the time of re-energization is detected, and the quality of the futon is detected from the characteristic as shown in FIG. . In the case of a cotton futon having a small fiber density and a high airflow resistance, the electric blower 5 has a higher internal pressure as shown in FIG.
The time from turning off the motor to stopping the motor also becomes longer.

FIGS. 10A and 10B show the change characteristics of the air pressure in the air passage 4 when the electric blower 5 is energized ON and OFF. In FIG. 10 as well, in comparison with the cotton futon (a), where the fiber density of the futon is high and heavy, in the case of the wool futon (b), when the power is turned off, the air escapes quickly, and the futon becomes near atmospheric pressure in a short time. Reach. Similarly, in the case of the wool duvet of (b), it is shown that even when the energization is ON, a constant air pressure p1 lower than p2 of (a) is reached in a short time.

FIG. 11 is a flowchart showing the operation of the first embodiment of the present invention. The detection operation of the first embodiment will be described below with reference to FIGS. 1 to 10 and FIGS. When the drying mat 26 is inserted between the bedding 28 and the comforter 27 and the preparation for drying is completed, the start key of the operation unit 15 is set to O.
N to energize the electric blower 5 and the heater 6 (step S
twenty one). Next, the timer of the operation unit 15 is set to, for example, one minute (step S22). When one minute has elapsed (step S
At 23), the power supply to the electric blower 5 and the heater 6 is turned off (step S24), and the state of the air pressure in the air passage 4 is detected by the air pressure sensor D22 (step S25).

Thus, the energization OF of the electric blower 5
The state of air bleed in the air passage 4 at the time of F is detected by the air pressure sensor D22, converted into an analog electric signal, and sent to the detection unit 9. The detection unit 9 that has detected the pressure state converts the detection signal sent from the air pressure sensor D22 into a pulse and outputs the pulse to the arithmetic processing unit 10 as information corresponding to the quality of the futon. The arithmetic processing unit 10 includes the detection information of the detection unit 9 and FIG.
A comparison operation with the experimental data shown in FIG. 10 is performed (step S26) to determine the quality of the futon (step S2).
7) Infer the required drying time and required heating temperature as shown in Table 2 based on the quality of the futon.

If the result of the determination by the arithmetic processing section 10 is "cotton", the heating temperature of the heater 6 is set to 70 ° C. (step S28). Then, for example, the calculated required drying time is numerically displayed on the liquid crystal display of the operation unit 15, and the electric blower 5 and the heater 6 are turned on again (steps S29 and S30). At the same time, the numerical value displayed on the liquid crystal display is sequentially counted down, and the remaining drying time is displayed. Thereafter, the remaining drying time is cyclically checked (step S).
31) When the count-out, the electric blower 5 and the heater 6 are both automatically turned off (step S32).

If "cotton" is determined to be NO in the arithmetic processing section 10, the process proceeds to step S33, and the blowing temperature is set to 60 ° C. suitable for "wool". After that, the same steps as in the case where the set temperature is 70 ° C. will be followed, but will not be described again because they are duplicated. In this way,
The blow-out temperature of the electric blower 5 is controlled to a temperature appropriate for the quality of the futon, and the futon drying process ends.

In the above description, the energization OF of the electric blower 5
The case where the quality of the futon is detected by detecting the state of decrease in the air pressure in the air passage 4 at the time of F has been described. Similarly, the increase characteristic of the air pressure in the air passage 4 when the energization of the electric blower 5 is ON is detected. Even the quality of the futon can be detected.

As described above, according to the first embodiment, the time required for the air pressure detected by the air pressure sensor D22 to reach the atmospheric pressure or a predetermined air pressure from when the electric blower 5 is energized or when the energization is stopped, or The drying of the futon is properly controlled by detecting the time until the air pressure when the blower 5 is energized or when the energization is stopped or after the energization is stopped is reduced to a predetermined ratio with respect to the air pressure during normal energization. be able to.

Embodiment 2 FIG. 12 is a cross-sectional view of a main portion for describing Embodiment 2 of the present invention. P is a temperature detection point, which is provided inside the drying mat 26. The temperature of the hot air at the detection point P inside the drying mat 26 is shown in FIG. As shown in the figure, the temperature at the detection point P slightly rises sharply with the start of operation. However, after 30 minutes, the rate of rise slows down, and after about 1.5 hours, it converges to approximately 53 ° C. The temperature change in this case is also greater for wool futon than for cotton futon.
Since the density is low and the airflow resistance is low, the rate of change in temperature is also large.

FIG. 13 is an explanatory view of the configuration of the second embodiment of the present invention. Numeral 38 denotes, for example, a thermistor set between the drying mat 26 and the comforter 27, which constitutes a temperature sensor D23. Reference numeral 39 denotes a signal line for connecting an output signal of the thermistor 38 to a connector 41 provided on the main body 1.
Is connected to the detection unit 9 provided in the control device 8. In this case, as shown in FIG. 14, the metal wire w embedded in the connection hose 25 that connects the drying mat 26 to the main body 1 may be used for the signal line 39. With this configuration, the signal line 39 does not become an obstacle and can be made compact. Also, connect the temperature sensor D23 to the connection hose 2
At the end of 5, it may be configured to be fixed at a position where it is pressed against the futon 28 or 29. By doing so, it is possible to eliminate the trouble of installing the temperature sensor D23, and to achieve a configuration that greatly improves the usability.

In the second embodiment as described above, for example, the futon drying is started according to the flowchart of FIG. 11 and the power supply to the electric blower 5 and the heater 6 is stopped when a predetermined time (for example, one minute) has elapsed. Then, the temperature is measured by the thermistor 38. Thermistor 38 (temperature sensor D23)
Is sent to the second detector 9b as shown in FIG. 15. The second detector 9b outputs the detection signal sent from the temperature sensor D23 to the arithmetic processing unit 10 as information corresponding to the quality of the futon. . The arithmetic processing unit 10 determines the quality of the futon based on the detection information of the second detection unit 9b, and infers the required drying time and the required heating temperature as shown in Table 2 based on the quality of the futon.

FIGS. 16 to 18 are explanatory diagrams of another example of use of the second embodiment. In the usage example shown in FIG. 16, a temperature sensor D23 is fixedly attached to a position on the surface of the drying mat 26 which is in close contact with the comforter 27. Further, in the case of FIGS. 17 and 18, a configuration is adopted in which the temperature sensors D23 are respectively arranged above and below the mattress 28.

Modification FIG. 19 is a structural explanatory view of a modification of the second embodiment. In FIG. 19, 42 is a hot air path, 43 is an air connector, and 44 is a nozzle. One end of the warm air passage 42 is connected to the blower passage 4 at an upstream side of the fan of the electric blower 5, and the other end is connected to a connector 43 provided on the main body 1. The nozzle 44 has one end connected to the connector 43 and the other end inserted between the drying mat 26 and the comforter 27. Therefore, the hot air path 42, the air connector 43, and the nozzle 44 form a bypass air path that recirculates the hot air in the air blowing path 4. D23 is a temperature sensor disposed in a part of the hot air passage 42 of the bypass air passage.

In the above-mentioned futon dryer, when the electric blower 5 is driven, the drying mat 26 and the futon 27
Is sucked into the nozzle 44 and guided into the air blowing path 4 via the warm air path 42. The temperature sensor D23 detects the temperature of the air passing through the hot air passage 42 to detect the quality of the futon. In this modification, since the temperature sensor D23 is provided in the main body 1, the temperature of the drying mat 26 is proportionally detected.

Embodiment 3 In general, an induction motor is used for the electric blower 5 of the futon dryer, and the torque and current characteristics of the induction motor are as shown in FIG. Operating range of the motor from the start of drying of the electric blower 5 in the drying progression in futon dryer is in the thick line position in FIG. 20, also the current value I supplied to the electric blower 5 is the width of the I ₁ ~I ₂ is there.

FIG. 21 shows the relationship between the actual state of futon drying and the change in the current I flowing through the electric blower 5. When the evaporation amount of moisture per unit time passed the peak value of the drying decreases, converging gradually approaches the constant I ₂ also decreases the current value I. In the present invention, the quality of the futon is determined from such current characteristics, and the drying control is performed based on the drying conditions suitable for the quality.

FIG. 22 is an explanatory view of the configuration of the third embodiment of the present invention, and FIG. 23 is a drive circuit diagram of the electric blower 5 of the third embodiment.
In FIG. 22, the display of the following components is omitted. FIG.
In 3, 45 is a drive condenser of the electric blower 5, D
Reference numeral 24 denotes a current sensor including a search coil 46 provided close to the drive circuit of the electric blower 5.

In Embodiment 3 configured as described above,
When a current flows through the drive circuit of the electric blower 5, a current proportional to the drive current of the electric blower 5 flows through the current sensor D24 due to a change in the magnetic field. Based on this current, the quality of the futon is detected by the second detecting section 9b, and is added to the arithmetic processing section 10 to calculate the quality.
As shown in the block diagram of FIG. 2, the control unit 11 controls the heater 6 and the electric blower 5.

Modification FIG. 25 shows a modification of the third embodiment. In this modification, a current detection resistor 47 (current sensor D24) having an extremely small internal resistance is inserted into the drive circuit of the electric blower 5,
The drive current of the electric blower 5 is detected by measuring the voltage generated at both ends thereof, and the processing procedure and the control procedure are the same as those in the third embodiment.

Example 4 FIG. 26 shows the futons 27, 28 in relation to the degree of wetness (water content × 100% / weight of the futons) when the futons are dried.
28 shows the correlation between the moisture content and the conductivity. The conductivity of the futons 27 and 28 is substantially proportional to the moisture content.
In the fourth embodiment, focusing on the fact that the electric conductivity changes depending on the amount of moisture contained in the futons 27 and 28, the change in the electric resistance due to moisture, which is inversely related to the electric conductivity, is directly detected, and
Drying conditions suitable for the qualities of Nos. 7 and 28 are determined.

FIG. 27 is an explanatory view of the structure of the fourth embodiment of the present invention, and FIG. 28 is an enlarged perspective view of a main part of the fourth embodiment. FIG.
In FIGS. 7 and 28, reference numerals 64 and 65 denote a pair of electrodes, which are electrically insulated at a predetermined distance from each other and mounted on a flat plate 66. A resistance sensor D27, which is a humidity sensor, is realized by the pair of electrodes 64 and 65, and is connected to the connector 41 provided on the main body 1 by signal lines 51 and 52.

Now, the resistance sensor D 27 is installed on the surface of the comforter 27, and warm air is supplied into the drying mat 26. 2
When a constant voltage is applied between the two electrodes 64 and 65 by an application voltage terminal (not shown), a current flows from the electrode 64 to the other electrode 65 through the inside of the futon.
At this time, in the early stage of drying or in the cotton futon having a high fiber density, the moisture resistance is high and the conductivity is high as shown in FIG. However, when a wool futon is used or when drying progresses and moisture evaporates and the water content decreases, the electrical conductivity also decreases and the electric resistance of the futon increases. Therefore, as shown in FIG. 29, the futon is dried under the drying conditions corresponding to the quality of the futon by the detection unit 9b and the arithmetic processing unit 10 using the detection resistance of the resistance sensor D27.

In each of the above-described embodiments, the case where the electric resistance and the like are continuously detected and the drying condition is controlled when the electric resistance reaches or reaches a predetermined value is described. It is also possible to detect the electrical resistance or the like, and to control the drying conditions when the value reaches or reaches a predetermined value.

In the above-described embodiment of the present invention, the case where the control unit 8 is constituted by the two detection units 9a and 9b, the arithmetic processing unit 10 and the control unit 11 has been described.
The internal configuration and the names of the “arithmetic processing unit” and the like are not necessarily limited to the embodiment, and each sensor and the detection unit in the control device 8 may be integrally defined as a “detection unit”. Although the case where the second sensor D2 is constituted by four sensors D22 to D24 and D27 such as the air pressure sensor D22 has been described, the number of sensors is not limited to the embodiment, and a plurality of sensors such as the air pressure sensor D22 and the temperature sensor D23 are used. If the determination is made based on a plurality of pieces of detection information in a combination of the above, the quality of the futon can be determined with higher accuracy, and finer temperature control can be performed. Further, the configuration of each of the other units is not limited to the embodiment.

[0053]

The present invention relates to a futon dryer, in which air sent by an electric blower is heated by a heater and introduced into a breathable drying mat to dry a futon, etc. An air pressure sensor that detects the air pressure on the side, a futon quality determination unit that determines the quality of the futon based on the detection information of the air pressure sensor, and a drying condition is obtained based on the determination result of the futon quality determination unit. Thus, a futon dryer including an electric blower and a control device for controlling the heater was configured.

Further, the present invention relates to a futon dryer, in which the air sent by the electric blower is heated by a heater and introduced into a permeable drying mat to dry the futon and the like. A temperature sensor for detecting the temperature on the surface of the futon after the energization of the futon or the temperature of the air in contact with the surface of the futon, and a futon for judging the quality of the futon based on the rate of temperature decrease detected by the temperature sensor. A futon dryer including a quality determination unit and a controller that determines a drying condition based on a determination result of the futon quality determination unit and controls the electric blower and the heater based on the drying condition is configured.

Further, the present invention relates to a futon dryer in which the air sent by the electric blower is heated by a heater and introduced into a breathable drying mat to dry the futon or the like. A current sensor that detects the current of the electric blower, a futon quality determination unit that determines the quality of the futon based on the detection information of the current sensor, and a drying condition based on the determination result of the futon quality determination unit. A futon dryer comprising an electric blower and a control device for controlling the heater based on the futon dryer.

Further, in the present invention, in a futon dryer, the air sent by the electric blower is heated by a heater and introduced into a breathable drying mat, and the futon dryer is installed on the surface of the futon. A humidity sensor for sensing the humidity of the futon, a futon quality determining means for determining the quality of the futon based on the detection information of the humidity sensor, and a drying condition based on the determination result of the futon quality determining means. A futon dryer comprising an electric blower and a control device for controlling the heater based on the above.

Further, the display further comprises a display, and the control device constitutes a futon dryer for displaying the inferred required drying time on the display.

Further, the control device constitutes a futon dryer for displaying the elapsed time of the drying time on the display.

As a result, the futon can be dried without changing the quality of the "wool" or "feather" inside as in the conventional futon dryer. Further, even when the material of the futon is “cotton” and “feather”, it is not necessary to manually switch the changeover switch and the timer knob each time. Therefore, the handling operation is extremely easy and troublesome, and there is no risk of erroneous manual switching operation and setting operation. In addition, it is possible to eliminate the problems of the conventional futon dryer without discarding a high-quality duvet or a wool duvet due to an erroneous operation of drying.

Therefore, according to the present invention, the drying condition corresponding to the material of the futon is automatically set, and the proper temperature,
It is possible to provide a futon dryer having various features such as automatic drying in a short time.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a configuration of an entire embodiment of the present invention.

FIG. 2 is a block diagram common to all embodiments of the present invention.

FIG. 3 is a diagram showing the relationship between the operation time of a futon dryer and the amount of water evaporation of the futon.

FIG. 4 is a diagram showing the relationship between the operation time of the futon dryer and the temperature inside the drying mat.

FIG. 5 is a characteristic diagram showing a relationship between a drying time of a futon and a water content.

FIG. 6 is a waveform diagram showing a relationship between an operation time of a futon dryer and a temperature on a drying mat.

FIG. 7 is an explanatory diagram of a configuration of a first embodiment of the present invention.

FIG. 8 is a block diagram of Embodiment 1 of the present invention.

FIG. 9 is a waveform chart showing a change in pressure according to the first embodiment of the present invention.

FIG. 10 is a waveform diagram showing a change in pressure when the electric blower is turned on and off.

FIG. 11 is a flowchart for explaining the operation of the first embodiment of the present invention.

FIG. 12 is an explanatory diagram of a main part of a futon dryer for explaining the second embodiment.

FIG. 13 is a configuration explanatory diagram of a second embodiment.

FIG. 14 is an explanatory diagram in which a part of the second embodiment is modified.

FIG. 15 is a block diagram of a second embodiment of the present invention.

FIG. 16 is an explanatory diagram of another usage example of the embodiment of the present invention.

FIG. 17 is an explanatory diagram of another usage example of the embodiment of the present invention.

FIG. 18 is an explanatory diagram of still another use example of the embodiment of the present invention.

FIG. 19 is a configuration explanatory view of a modification of the second embodiment.

FIG. 20 is a diagram showing a relationship between the number of revolutions of the electric motor of the electric blower, and current and torque.

FIG. 21 is a diagram showing a relationship between a drying characteristic of a futon and a characteristic of a current flowing through a motor of an electric blower.

FIG. 22 is an explanatory diagram of a configuration of a third embodiment of the present invention.

FIG. 23 is a connection diagram of the motor drive circuit of the third embodiment shown in FIG.

FIG. 24 is a block diagram of a third embodiment of the present invention.

FIG. 25 is an electric circuit diagram of a modification of the third embodiment of the present invention.

FIG. 26 is a characteristic diagram for explaining Embodiment 4 of the present invention.

FIG. 27 is a configuration explanatory view of a fourth embodiment of the present invention.

FIG. 28 is an enlarged explanatory view of a main part of a fourth embodiment of the present invention.

FIG. 29 is a block diagram of a fourth embodiment of the present invention.

FIG. 30 is a perspective view of an example of a conventional futon dryer.

FIG. 31 is a perspective view showing a use state of a conventional futon dryer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 4 Air blow path 5 Electric blower 6 Heater 8 Control device 9 Detecting part 9a First detecting part 9b Second detecting part 10 Arithmetic processing part 11 Control part 15 Operating part 25 Connection hose 26 Drying mat 27 Comforter 28 Bedding 38 Thermistor 42 Temperature Wind path 46 Search coil 47 Current detection resistor 64 electrode 65 electrode D1 First sensor D2 Second sensor D22 Pressure sensor D23 Temperature sensor D24 Current sensor D27 Resistance sensor (humidity sensor)

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-4-272798 (JP, A) JP-A-4-49997 (JP, A) JP-A-4-314500 (JP, A) JP-A-56- 24565 (JP, A) JP-A-5-200193 (JP, A) JP-A-2-29697 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06F 58/00 D06F 58 / 28

Claims (6)

(57) [Claims] 1. A futon dryer that heats air sent by an electric blower with a heater and introduces the air into a permeable drying mat to dry a futon or the like, wherein an air pressure detecting an air pressure downstream of the electric blower is detected. A sensor, a futon quality determining unit that determines the quality of the futon based on the detection information of the air pressure sensor, a drying condition is determined based on a determination result of the futon quality determining unit, and the electric blower and A futon dryer, comprising: a controller that controls the heater. 2. A futon dryer for heating air supplied by an electric blower with a heater and introducing the air into a breathable drying mat to dry a futon or the like, wherein the electric blower and the heater are de-energized. A temperature sensor for detecting the temperature on the surface of the futon or the temperature of air in contact with the surface of the futon; futon quality determining means for determining the quality of the futon based on a rate of temperature decrease detected by the temperature sensor; A futon dryer, comprising: a controller for controlling the electric blower and the heater based on the drying condition based on a result of the determination by the futon quality determining means. 3. A futon dryer that heats air sent by an electric blower with a heater and introduces the air into a permeable drying mat to dry a futon or the like, and detects a current of the electric blower in a driving start state. A current sensor, futon quality determining means for determining the quality of the futon based on the detection information of the current sensor, and a drying condition based on the determination result of the futon quality determining means; And a control device for controlling the heater. 4. A futon dryer for heating air supplied by an electric blower with a heater and introducing the air into a breathable drying mat to dry a futon or the like, wherein the futon is installed on the surface of the futon and senses humidity of the futon. Humidity sensor, futon quality judging means for judging the quality of the futon based on the detection information of the humidity sensor, and a drying condition based on the judgment result of the futon quality judging means. A futon dryer comprising a blower and a control device for controlling the heater. 5. The futon dryer according to claim 1, further comprising a display, wherein the control device displays the inferred required drying time on the display. Machine. 6. The control device according to claim 5, wherein the control unit causes the display unit to display the elapsed time of the drying time.
The futon dryer according to claim 1.