Drying machine

Abstract

A dryer (1) according to an embodiment comprises: a housing part (3) for housing an object to be dried; and a microwave irradiation unit (6) that irradiates microwaves on the object to be dried housed in the housing unit (3). In addition, the dryer (1) includes a radio wave absorber (12) that absorbs the microwaves irradiated from the microwave irradiation unit (6) and converts the microwaves into heat. The air inside the housing part (3) or the air flowing into the housing part (3) is heated by the heat converted by the radio wave absorber (12).

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a dryer that dries a drying object by irradiating microwaves. BACKGROUND

[0002] As a method of achieving a high speed of drying performance of a laundry dryer or a washing dryer, there is a method in which a heat source that heats moisture of laundry uses microwaves (for example, refer to Patent Literature 1). The laundry dryer disclosed in Patent Literature 1 has a box body that can be opened and closed, and a drum that can rotate is provided in an inner cavity of the box body. A microwave generating device that radiates microwaves to the inner cavity of the box body is provided in the box body. At least a part of the microwave generating device is provided in a blower mechanism, and heat generation of the microwave generating device is utilized for heating of air that flows in the blower mechanism.

[0003] PRIOR ART DOCUMENTS

[0004] PATENT LITERATURE

[0005] Patent Literature 1: Specification of Chinese Patent Application Publication No. 106283562 SUMMARY

[0006] In such a dryer, it is required to further improve drying efficiency.

[0007] Therefore, the present disclosure provides a technology of improving drying efficiency of a dryer that dries a drying object by irradiating microwaves.

[0008] The dryer of the aspect of the present disclosure includes: a housing portion that houses a drying object; a microwave irradiation portion that irradiates microwaves to the drying object housed in the housing portion; and a wave absorption portion that absorbs the microwaves irradiated from the microwave irradiation portion and converts it into heat. It is configured in such a manner that air inside the housing portion or air flowing into the inside of the housing portion is heated by the heat converted by the wave absorption portion.

[0009] According to the technology of the present disclosure, it is possible to improve drying efficiency of a dryer that dries a drying object by irradiating microwaves. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a schematic cross-sectional view that schematically shows a structure of the dryer of Embodiment 1.

[0011] Figure 2 is a view that shows a flow of air in the dryer.

[0012] Figure 3 is a view that shows a flow of microwaves in the dryer.

[0013] Figure 4 is a view that shows a second example of a setting position of the wave absorption body.

[0014] Figure 5 is a view showing a first example of a setting position of the wave absorber.

[0015] Figure 6 is a view showing a fourth example of a setting position of the wave absorber.

[0016] Figure 7 is a view showing a fifth example of a setting position of the wave absorber.

[0017] Figure 8 is a view showing a sixth example of a setting position of the wave absorber.

[0018] Figure 9 is a view showing a seventh example of a setting position of the wave absorber. DETAILED DESCRIPTION

[0019] Hereinafter, an embodiment as an example of the present disclosure will be described in detail with reference to the drawings. However, detailed description will be omitted at times where not necessary. For example, detailed description of matters already known or repeated description of substantially the same structure will be omitted at times.

[0020] Further, the drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure and are not intended to limit the subject matter recited in the claims by the drawings.

[0021] (Embodiment 1)

[0022] Hereinafter, Embodiment 1 will be described using Figures 1-3

[0023] [1-1. Structure]

[0024] Figure 1 is a schematic cross-sectional view schematically showing a structure of the dryer 1 of Embodiment 1, showing a first example of a setting position of the wave absorber. The dryer 1 of the present embodiment has a function of drying a drying target object such as laundry by irradiating microwaves, which are one type of electromagnetic waves, to the drying target object. Further, in the present disclosure, as shown in Figure 1 , at times, a set state (hereinafter, also referred to as a “setting state”) is taken as a reference, the right direction of Figure 1 , that is, the side where the door 5 exists, is taken as the front surface side of the dryer 1, and the left direction of Figure 1 is taken as the rear surface side. In addition, at times, the up-down direction (that is, the vertical direction) in the setting state shown in Figure 1 is taken as the up-down direction of the dryer 1.

[0025] As shown in Figure 1 ​As shown, a housing 2 of the dryer 1 has a receiving portion 3 inside thereof for receiving a drying object. The receiving portion 3 is formed of metal or the like and has a configuration capable of suppressing leakage of microwaves irradiated inside to the outside. The inner surface of the receiving portion 3 is formed in a manner to reflect microwaves. The back surface of the receiving portion 3 is composed of a punched metal or the like having a plurality of holes through which air passes but microwaves do not pass.

[0026] A placement portion 4 for placing the drying object is provided inside the receiving portion 3. The placement portion 4 includes a placement surface for placing the drying object and an outer frame for supporting the placement surface. The outer frame of the placement portion 4 is supported or suspended via a weight detection portion 21. The placement surface has a plurality of holes for passing air.

[0027] The weight detection portion 21 detects the weight of the drying object placed on the placement portion 4. A control device (not shown) for controlling the dryer 1 estimates the amount of moisture contained in the drying object based on the detection result of the weight detection portion 21. The control device adjusts the output of microwaves based on the change in the estimated amount of moisture and ends the drying operation when the rate of change in the amount of moisture is lower than a predetermined value. The number and positions of the weight detection portion 21 are not particularly limited, and for example, if only one is provided, the placement portion 4 can be supported at three points, and the weight detection portion 21 can be provided at only one of the points. In addition, as described later, in order to detect a deviation in the change in the amount of moisture contained in the drying object to detect uneven drying of the drying object, a plurality of weight detection portions 21 can be provided at different positions of the placement portion 4.

[0028] A door 5 that opens and closes the opening portion of the front surface of the housing 2 and the receiving portion 3 is provided. By opening the door 5, a user can receive the drying object into the receiving portion 3 or take the drying object out of the receiving portion 3. The door 5 includes a metal mesh or the like structure for suppressing leakage of microwaves to the outside. In addition, in order to avoid leakage of microwaves from the gap between the opening portion of the housing 2 and the receiving portion 3 and the door 5, a choke structure or the like is formed between the opening portion and the door 5. The receiving portion 3 and the door 5 constitute a shielding portion for suppressing leakage of microwaves irradiated into the inside of the receiving portion 3 to the outside (the outside of the dryer 1).

[0029] In the present embodiment, the inside of the receiving portion 3 is the entire shielding space of microwaves provided inside the housing 2. That is, the receiving portion 3 has as its main body a space for receiving the drying object, which is substantially a rectangular parallelepiped including the placement portion 4, but also includes the antenna receiving portion 9 and the absorber receiving portion 13 described later. However, in the detailed description of the dryer 1, sometimes the space for receiving the drying object is referred to as the receiving portion 3.

[0030] A partition 10 is provided in the lower portion of the housing portion 3 to form an antenna housing portion 9, and the antenna 8 is provided inside the antenna housing portion 9. The partition 10 is formed in a plate shape from a material that transmits microwaves, such as glass, resin, or ceramic. The partition 10 can also be in a form that allows passage of heat, or in a form that has ventilation, such as a lattice or a mesh. A microwave irradiation portion 6, a waveguide 7, and a motor 11 are provided below the antenna housing portion 9. These structures can also be provided above or to the side of the housing portion 3.

[0031] The microwave irradiation portion 6 irradiates microwaves for drying the drying object housed in the housing portion 3. The microwaves generated by the microwave irradiation portion 6 are guided to the antenna 8 via the waveguide 7, and are irradiated from the antenna 8 to the inside of the housing portion 3. Thus, the moisture contained in the drying object can be heated and evaporated. The antenna 8 is rotated by the motor 11. Thus, the microwaves can be uniformly irradiated over the entire area of the inside of the housing portion 3, and thus the drying object can be uniformly and efficiently dried.

[0032] The microwave irradiation portion 6 oscillates electromagnetic waves of a frequency of a 2.45 GHz band that is divided into an ISM (Industry Science Medical) band. The microwave irradiation portion 6 can also oscillate electromagnetic waves of a frequency of a 915 MHz band that is also divided, or the like. The microwave irradiation portion 6 can also be a microwave oscillator such as a magnetron. Thus, the manufacturing cost of the drying machine 1 can be reduced. The microwave irradiation portion 6 can also be a semiconductor microwave oscillator. Thus, the oscillation frequency can be varied. In addition, the stability of the output power and the oscillation frequency can be improved. In addition, it operates at a low voltage, and thus the safety can be improved.

[0033] A circulating air path 16 is provided in the upper portion of the housing portion 3. The circulating air path 16 is configured by a flow outlet side air path 30, a flow inlet side air path 29, and an absorber housing portion 13 described below. The flow outlet side air path 30 includes the flow outlet 24 provided to the housing portion 3 and an exhaust port 17 that communicates with the outside of the circulating air path 16. The flow inlet side air path 29 includes the flow inlet 23 provided to the housing portion 3, a suction port 18 that communicates with the outside of the circulating air path 16, a heater 22, and a supply fan 15. Both the flow outlet side air path 30 and the flow inlet side air path 29 communicate with the outside, and thus, in order to be able to ensure the shielding property of the housing portion 3, a shielding member such as a punched metal having a plurality of holes that allow air to pass but do not allow microwaves to pass is provided to the opening portion that connects the housing portion 3.

[0034] Air (also referred to as internal air) inside the housing portion 3 that houses the drying target is circulated by the circulation air path 16 using the air supply fan 15. If the air supply fan 15 is operated during the drying operation, the internal air containing water vapor evaporated from the drying target flows out from the flow outlet 24 provided at the front upper portion of the housing portion 3 to the flow outlet side air path 30. The internal air that has flowed out to the flow outlet side air path 30 is supplied to the inside of the housing portion 3 from the flow inlet 23 provided at the back of the housing portion 3 through the absorbent housing portion 13 and the flow inlet side air path 29, and is circulated. The circulation air path 16 is provided at the upper portion of the housing portion 3, and thus the internal air of the housing portion 3 that becomes high temperature can be efficiently circulated.

[0035] In addition, a part of the internal air of the housing portion 3 that has flowed out from the flow outlet 24 is discharged to the outside from the exhaust port 17 provided at the flow outlet side air path 30, and air (also referred to as external air) of the outside is taken in from the air intake port 18 provided at the flow inlet side air path 29 and flows into the housing portion 3 from the flow inlet 23. Thus, a part of the water vapor contained in the internal air is discharged to the outside, and drying of the drying target is promoted. The heater 22 heats the air that has flowed into the inside of the housing portion 3 from the flow inlet 23. Thus, drying of the drying target can be promoted.

[0036] Further, the water vapor contained in the internal air can be converted to liquid water by cooling and discharged to the outside. The cooling member for liquefying the water vapor can be air cooling, water cooling, a Peltier element, a heat pump, or the like. The cooling member can be provided at the flow outlet side air path 30, the circulation air path 16, the flow inlet side air path 29, or the like, or can be provided at any position inside the housing portion 3. In the case where the water vapor is liquefied and discharged to the outside, any one or more of the exhaust port 17, the air intake port 18, the air supply fan 15, and the heater 22 can not be provided.

[0037] The absorbent housing portion 13 is formed by providing the partition portion 14 at the upper portion of the housing portion 3, and the wave absorber 12 is provided inside the absorbent housing portion 13. The wave absorber 12 is formed of a dielectric body, a conductive body, or the like that absorbs microwaves and converts them to heat. In the present embodiment, the wave absorber 12 is provided at the inner surface of the absorbent housing portion 13 of the housing portion 3. The partition portion 14 is formed in a plate shape from a material such as glass, resin, ceramic, or the like that transmits microwaves. In the present embodiment, the partition portion 14 is provided at the upper portion of the housing portion 3, and the absorbent housing portion 13 is formed at the upper portion of the housing portion 3. Figure 1 In the example of Fig. 1, as described above, the absorbent housing portion 13 serves as a flow path for air and constitutes a part of the circulation air path 16. Details of the wave absorber 12 will be described later.

[0038] The temperature detection portion 19 detects the temperature of the wave absorber 12. The control device estimates the electric field intensity inside the housing portion 3 based on the detection result of the temperature detection portion 19.

[0039] The temperature detecting portion 20 detects the temperature of the air flowing out from the inside of the housing portion 3. The control device estimates the amount of moisture contained in the drying target object on the basis of the detection result of the temperature detecting portion 20. As described above, the control device can also estimate the amount of moisture contained in the drying target object on the basis of the detection result of the weight detecting portion 21. In this case, the temperature detecting portion 20 can not be provided. A humidity detecting portion can be provided in place of the temperature detecting portion 20 or in addition to the temperature detecting portion 20. In the case where the amount of moisture contained in the drying target object is estimated on the basis of the detection result of the temperature detecting portion 20 or the humidity detecting portion, the weight detecting portion 21 can not be provided.

[0040] Figure 2 is a view showing the flow of air in the dryer 1. In Figure 2 , the flow of air is indicated by arrows, and the reference numerals of the respective portions constituting the dryer 1 are omitted in order to easily understand the flow of air. Hereinafter, the flow of air in the dryer 1 will be described using Figure 2 .

[0041] (1) The air is heated by the heater 22. (2) The heated air is sent out by the supply fan 15. The order of (1) and (2) can also be reversed. That is, the air sent out from the supply fan 15 can be heated by the heater 22. (3) The air sent out from the supply fan 15 flows into the inside of the housing portion 3 from the flow inlet 23 provided on the back surface of the housing portion 3. (4) The air flowing into the inside of the housing portion 3 takes moisture from the drying target object during the flow from the rear of the housing portion 3 toward the front. (5) The air containing water vapor evaporated from the drying target object flows out from the flow outlet 24 provided on the upper front of the housing portion 3 toward the flow outlet side air passage 30. (6) A part of the air flowing out to the flow outlet side air passage 30 flows out from the exhaust port 17 to the outside of the circulation air passage 16, and the remaining part flows into the absorber housing portion 13. (7) The air flowing into the absorber housing portion 13 is heated by taking heat from the wave absorber 12 which generates heat by absorbing microwaves. (8) The outside air taken in from the suction port 18 is mixed with the air flowing out to the flow inlet side air passage 29 from the absorber housing portion 13, and returns to (1). That is, the air flowing into the inside of the housing portion 3 contains the outside air taken in from the suction port 18. The flow inlet 23 is provided on the back surface of the housing portion 3, and the flow outlet 24 is provided on the upper front of the housing portion 3, so that the heated drying air efficiently flows in the range of the entire surface of the placement portion 4. Thus, the drying efficiency can be improved.

[0042] Figure 3 is a view showing the flow of microwaves in the dryer 1. In Figure 3 , the flow of microwaves is indicated by arrows, and the reference numerals of the respective portions constituting the dryer 1 are omitted in order to easily understand the flow of microwaves. Hereinafter, the flow of microwaves in the dryer 1 will be described using Figure 3, which indicates the flow of microwaves in the dryer 1.

[0043] (1) Microwaves are generated from the microwave irradiation section 6. (2) The generated microwaves flow into the waveguide tube 7. (3) The microwaves that have flowed into the waveguide tube 7 are irradiated to the inside of the housing section 3 via the antenna 8. (4) The microwaves that have been irradiated to the inside of the housing section 3 are diffusely reflected in the inside of the housing section 3, during which period the moisture contained in the drying target object is absorbed. (5) A part of the microwaves that have not been absorbed are absorbed by the electric wave absorber 12, and the remaining part returns to the microwave irradiation section 6 and is absorbed.

[0044] As described above, the flow outlet 24, the connection portion of the flow outlet side air path 30 and the absorber housing section 13, the connection portion of the flow inlet side air path 29 and the absorber housing section 13, and the flow inlet 23 are provided with a punched metal, a metal mesh, or the like for suppressing leakage of microwaves. In addition, the flow outlet side air path 30 and the flow inlet side air path 29 can also be formed of a material such as a metal that blocks microwaves. In this case, instead of or in addition to the punched metal, the metal mesh, or the like for suppressing leakage of microwaves provided in the flow outlet 24, the connection portion of the flow outlet side air path 30 and the absorber housing section 13, the connection portion of the flow inlet side air path 29 and the absorber housing section 13, and the flow inlet 23, a punched metal, a metal mesh, or the like for suppressing leakage of microwaves is provided in the exhaust port 17 and the intake port 18. The flow outlet side air path 30 can also be provided in the inside of the housing section 3.

[0045] [1-1-1. Electric wave absorber]

[0046] In the case where the drying target object is small in amount, or in the case where the drying operation is performed and the moisture contained in the drying target object becomes small, the amount of microwaves absorbed by the moisture (load) is small, and thus the electric wave intensity in the inside of the housing section 3 can increase. If the electric wave intensity in the inside of the housing section 3 increases, there is a possibility that sparks are generated from a metal such as a button or a zipper attached to a piece of clothing or the like, or the metal is heated to damage the drying target object. In the case where a magnetron is used as the microwave irradiation section 6, there is a lower limit to the microwave output that can be stably output from the magnetron in terms of the characteristics of the magnetron, and thus a countermeasure to reduce the microwave output when the moisture becomes small during the drying operation is not sufficient.

[0047] To solve such a problem, in the drying machine 1 of the present embodiment, the wave absorber 12 that absorbs microwaves is provided inside the shielding portion for suppressing leakage of microwaves to the outside. Thus, even in a case where the moisture (load) present inside the housing portion 3 is small, the wave absorber 12 absorbs the wave energy and converts it into heat energy, so that excessive rise in the intensity of the waves inside the housing portion 3 can be prevented. Therefore, the safety of the drying machine 1 that irradiates microwaves to dry the drying object can be improved. In addition, damage to the drying object can be prevented.

[0048] As described above, in the present embodiment, the housing portion 3 and the door 5 function as the shielding portion, and therefore the wave absorber 12 can also be provided at one or a plurality of positions on the inside of the housing portion 3 and the door 5.

[0049] The wave absorber 12 can also be provided on the side opposite to the microwave irradiation portion 6 with the drying object interposed therebetween. For example, the microwave irradiation portion 6 can be provided at a position lower than the placement portion 4, and the wave absorber 12 can be provided at a position higher than the placement portion 4. Conversely, the microwave irradiation portion 6 can be provided at a position higher than the placement portion 4, and the wave absorber 12 can be provided at a position lower than the placement portion 4. In addition, the microwave irradiation portion 6 can be provided on the side of the placement portion 4, and the wave absorber 12 can be provided on the side opposite thereto. Thus, microwaves irradiated from the microwave irradiation portion 6 can be first irradiated to the drying object, and the wave absorber 12 can be used to absorb microwaves that are not absorbed by the moisture contained in the drying object, so that the drying efficiency can be improved.

[0050] The wave absorber 12 can also be provided on the inner surface of the shielding portion or in the vicinity of the inner surface. Thus, when the user takes out the dried drying object, the case of contacting the high-temperature wave absorber 12 can be suppressed. In addition, the volume of the housing portion 3 can be ensured.

[0051] The wave absorber 12 can also be provided in the flow path of the air sent to the inside of the housing portion 3, that is, the circulating air path 16. Thus, the air sent to the inside of the housing portion 3 can be heated, so that the drying efficiency can be improved.

[0052] The drying machine 1 can also include an absorber housing portion 13 for housing the wave absorber 12. Thus, the volume of the housing portion 3 can be ensured. In addition, when the user takes out the dried drying object, the case of contacting the high-temperature wave absorber 12 can be suppressed.

[0053] The inner surface of the absorber housing portion 13 can also have a shape that reflects at least a part of the microwaves toward the wave absorber 12. For example, the side wall of the absorber housing portion 13 can be inclined. Thus, the absorption efficiency of the wave absorber 12 for microwaves can be improved.

[0054] The absorber housing portion 13 can also be formed by the microwave-transmissive partition portion 14. Thus, when the user takes out the dried drying target, contact with the high-temperature wave absorber 12 can be suppressed.

[0055] The drying machine 1 can also be formed by the microwave-transmissive partition portion 14 inside the housing portion 3 for housing the wave absorber 12, and the absorber housing portion 13 constitutes the air flow path, i.e., the circulating air path 16, that sends air inside the housing portion 3. Thus, the circulating air path 16 can be efficiently formed, and the volume of the housing portion 3 can be ensured. In addition, when the user takes out the dried drying target, contact with the high-temperature wave absorber 12 can be suppressed.

[0056] The absorber housing portion 13 can also have an exhaust port 17 and an air intake port 18 and constitute a partial portion of the circulating air path 16 that circulates air inside the housing portion 3. Thus, the exchange of air inside the housing portion 3 and outside air and the heating of air by the wave absorber 12 can be performed using one circulating flow path.

[0057] For microwaves radiated toward the wave absorber 12, a switching portion that can be switched to either a state that reflects microwaves or a state that transmits microwaves can also be provided. For example, the switching portion can also be a baffle formed of a metal or the like that reflects microwaves. The control device can also be configured to reflect microwaves toward the inside of the housing portion 3 when the amount of moisture contained in the drying target is equal to or greater than a predetermined amount, and set the switching portion to a state that reflects microwaves. On the other hand, when the amount of moisture contained in the drying target is less than the predetermined amount, the switching portion can also be set to a state that transmits microwaves, and microwaves can be transmitted toward the wave absorber 12. Thus, the drying efficiency can be improved.

[0058] Furthermore, in Embodiment 1, an example in which one wave absorber 12 is provided in the absorber housing portion 13 is described. However, if the outlet-side air path 30 or the inlet-side air path 29 is configured as a shielding portion, the wave absorber 12 can also be provided in the outlet-side air path 30 or the inlet-side air path 29. The wave absorber 12 can also be provided in two or more of the absorber housing portion 13, the outlet-side air path 30, and the inlet-side air path 29. In these cases as well, the wave absorber 12 can heat air sent inside the housing portion 3, and the drying efficiency can be improved.

[0059] [1-1-2. Reuse of heat]

[0060] As an example other than Embodiment 1, the technique of reusing the heat energy converted from microwaves by the wave absorber 12 for the drying of a drying target is described using Figures 4-9 Further description.

[0061] The dryer 1 of the present embodiment is not limited to the first example, and is configured to heat the air (also referred to as internal air) inside the housing portion 3 or the air flowing into the inside of the housing portion 3 with the heat converted by the wave absorber 12 in the modes representing the plurality of examples described later. More specifically, the wave absorber 12 is provided at a position where microwaves radiated into the inside of the housing portion 3 reach and is a position where heat exchange with the internal air of the housing portion 3 or the air flowing into the inside of the housing portion 3 is possible. Thus, the air for drying the drying target can be heated with the heat converted by the wave absorber 12 that has absorbed the excess microwaves, and thus the drying of the drying target can be promoted and the drying efficiency can be improved.

[0062] The wave absorber 12 can also be provided at a position directly in contact with the internal air of the housing portion 3 or the air flowing into the inside of the housing portion 3. The wave absorber 12 can also be provided at a position separated from the internal air of the housing portion 3 or the air flowing into the inside of the housing portion 3 by a partition or the like through which heat can pass. The wave absorber 12 can also be provided at a position directly in contact with the internal air of the housing portion 3 or the air flowing into the inside of the housing portion 3 and in thermal contact with the air flowing into the inside of the housing portion 3. Thus, heat dissipation loss can be suppressed, and thus the drying efficiency can be improved.

[0063] The air flowing into the inside of the housing portion 3 can be external air taken in from the outside, can be air returned to the inside of the housing portion 3 after the internal air of the housing portion 3 is dehumidified, or can be a mixture of these. The dehumidification of the internal air can be performed by discharging a portion of the internal air containing water vapor to the outside or by cooling the water vapor contained in the internal air to convert it into liquid water and discharging it to the outside. The cooling member for liquefying the water vapor can be an air cooler, a water cooler, a Peltier element, a heat pump, or the like.

[0064] Figure 4 FIG. 2 is a view representing a second example of the position at which the wave absorber 12 is provided. In the second example, the wave absorber 12 is provided on the inner surface of the upper wall of the housing portion 3. The wave absorber 12 is in direct contact with the internal air of the housing portion 3, and thus the internal air of the housing portion 3 can be efficiently heated with the heat converted by the wave absorber 12.

[0065] In the second example, the exhaust passage 26 and the intake passage 25 are not configured as the circulating air passage 16 as in the first example. That is, the internal air of the housing portion 3 is discharged to the outside from the exhaust port 17 through the exhaust passage 26 from the flow port 24 provided at the front upper portion of the housing portion 3, and the external air taken in from the intake port 18 is correspondingly caused to flow into the inside of the housing portion 3 from the flow port 23 through the intake passage 25.

[0066] The electromagnetic wave absorber 12 can also be provided upstream of the air flowing into the interior of the housing 3, particularly near the plurality of holes on the back side of the housing 3 that function as inlet 23 for allowing air to flow into the interior of the housing 3. This allows the air flowing into the interior of the housing 3 to be preheated, thereby improving drying efficiency.

[0067] like Figure 4 As shown, the electromagnetic wave absorber 12 can also be arranged along the airflow from the inlet 23 to the outlet 24. This allows for uniform drying of the object to be dried. The electromagnetic wave absorber 12 can also be arranged over the entire mounting surface of the mounting section 4. This allows for uniform drying of the object as a whole. The electromagnetic wave absorber 12 can also be provided on the side or bottom surface of the storage section 3. The electromagnetic wave absorber 12 can also be provided in the antenna storage section 9. This allows for a compact dryer 1.

[0068] Figure 5 This diagram shows a third example of the placement of the radio wave absorber 12. In this third example, the radio wave absorber 12 is housed in an absorber housing 13 located at the upper part of the housing 3. The absorber housing 13 is formed inside the housing 3 by a partition 14 made of a material that transmits microwaves and allows heat to pass through, such as glass, resin, or ceramic. This allows the internal gas of the housing 3 to be heated using the heat energy converted from the radio wave absorber 12. In other words, the radio wave absorber 12 can indirectly heat the internal gas by heating the air in the absorber housing 13 and the partition 14.

[0069] If the partition 14 is in the form of a grid or mesh to allow internal gas to pass through, the electromagnetic wave absorber 12 can also directly heat the internal gas by the passage of the internal gas relative to the absorber housing 13. The partition 14 can prevent the user from coming into contact with the high-temperature electromagnetic wave absorber 12 when taking out the dried object.

[0070] Furthermore, the storage location of the radio wave absorber 12 can be as follows: Figure 5 It can be kept in space in a way that allows it to be in contact with the air as a whole, or it can be fixed to the inner surface of the storage part 3 or the partition part 14.

[0071] In the third example, as in the second example, the inside gas of the housing 3 is discharged from the exhaust port 17 through the exhaust path 26 from the flow outlet 24 provided at the front upper portion of the housing 3, and the outside gas sucked from the suction port 18 flows into the inside of the housing 3 through the suction path 25 from the flow inlet 23. The wave absorber 12 and the partition 14 can also be provided along the flow of air from the flow inlet 23 toward the flow outlet 24. Thus, the drying target object can be uniformly dried. The wave absorber 12 can also be provided over the entire placement surface of the placement portion 4. Thus, the drying target object as a whole can be uniformly dried. The absorber housing 13 and the wave absorber 12 can also be provided at the side portion or the lower portion of the housing 3.

[0072] Figure 6 Fig. 4 is a view showing a fourth example of the position where the wave absorber 12 is provided. In the fourth example, as in the second example, the wave absorber 12 is provided at the inner surface of the upper wall of the housing 3. In the fourth example, the suction port 18 is provided in the vicinity of the exhaust port 17, and the suction path 25 communicating with the flow inlet 23 is provided so as to indirectly contact the wave absorber 12 with a partition formed of a material that shields microwaves and through which heat can pass.

[0073] Thus, the inside gas of the housing 3 can be heated by the heat energy converted by the wave absorber 12, and the outside gas flowing into the inside of the housing 3 from the suction path 25 can also be heated, so that the drying efficiency can be improved.

[0074] A part of the suction path 25 and the exhaust path 26 can also be provided so as to indirectly contact with a partition formed of a material through which heat can pass. Thus, the outside gas flowing into the inside of the housing 3 from the suction path 25 can be heated by the air discharged from the inside of the housing 3 to the outside, so that the drying efficiency can be improved.

[0075] Further, as described above, the housing 3 is formed of a metal or the like, and has a configuration that can suppress leakage of microwaves to the outside. That is, the wall surface of the housing 3 blocks microwaves and allows heat to pass. Therefore, the partition can be dealt with by the wall surface of the housing 3, and thus the suction path 25 does not need to be able to block microwaves, and can be provided in close contact with the wall surface of the housing 3 by a material that is excellent in heat conduction. The wall surface of the housing 3 is not limited to the upper wall, and can be a side wall or a lower wall of the housing 3. In the case where the partition is constituted by the upper wall of the housing 3, it can also be said that the wave absorber 12 is provided at the wall surface of the suction path 25 that flows air into the inside of the housing 3 in the housing 3.

[0076] Figure 7is a view showing a fifth example of a setting position of the wave absorber 12. In the fifth example, as in the first example or the third example, the wave absorber 12 is housed in the absorber housing portion 13 provided in the upper portion of the housing portion 3. In the fifth example, the suction port 18 is provided in the vicinity of the exhaust port 17, and the absorber housing portion 13 constitutes a part of the suction air passage 25. Thereby, the outside air flowing into the inside of the housing portion 3 from the suction air passage 25 can be further heated, and thus the drying efficiency can be improved. The partition portion 14 can also be formed of a material such as glass, resin, ceramic, or the like, which transmits microwaves and heat. Thereby, the air in the inside of the housing portion 3 can be heated using the heat energy converted by the wave absorber 12, and thus the drying efficiency can be improved.

[0077] Figure 8 is a view showing a sixth example of a setting position of the wave absorber 12. In the sixth example, as in the second example or the fourth example, the wave absorber 12 is provided on the upper surface of the housing portion 3. The wave absorber 12 is in direct contact with the inside air of the housing portion 3, and thus the inside air of the housing portion 3 can be efficiently heated using the heat energy converted by the wave absorber 12. In the sixth example, the circulation air passage 16 is provided between the exhaust port 17 and the suction port 18, and the flow outlet 24 and the flow inlet 23 are communicated with each other. A part of the inside air of the housing portion 3 flowing out from the flow outlet 24 is exhausted to the outside from the exhaust port 17, and the remaining part is returned to the inside of the housing portion 3 via the circulation air passage 16. Thereby, a part of the water vapor contained in the inside air is exhausted to the outside, and the drying of the drying object is promoted.

[0078] The circulation air passage 16 is provided in such a manner as to be indirectly in contact with the wave absorber 12 with a partition member formed of a material such as metal, which shields microwaves and through which heat can pass. Thereby, the air flowing in the circulation air passage 16 can be heated using the heat energy converted by the wave absorber 12, and thus the drying efficiency can be improved by suppressing a decrease in temperature in the circulation air passage 16. A dehumidifying member for removing moisture in the air can also be provided in the circulation air passage 16. In this case, one or both of the exhaust port 17 and the suction port 18 can not be provided.

[0079] Further, the partition member can be either the upper wall of the housing portion 3 or a partition member other than the upper wall of the housing portion 3, as in the fourth example. In the case where the partition member is constituted by the upper wall of the housing portion 3, it can also be said that the wave absorber 12 is provided in the wall surface of the circulation air passage 16, which constitutes an air passage flowing into the inside of the housing portion 3.

[0080] Figure 9is a drawing of the seventh example indicating the setting position of the wave absorber 12, and is substantially the same as the first example to the extent of the shapes of the exhaust port 17 and the intake port 18 being different. In the seventh example, as in the fifth example, the wave absorber 12 is housed in the absorber housing portion 13 provided above the housing portion 3. In the seventh example, the absorber housing portion 13 constitutes a part of the circulating air path 16. Thereby, it is possible to heat the air flowing in the circulating air path 16, and thus it is possible to improve the drying efficiency. That is, it is possible to perform the exchange of the internal gas of the housing portion 3 and the external gas and the heating of the air by the wave absorber 12 using one circulating air path 16.

[0081] The partition portion 14 can also be formed of a material such as glass, resin, ceramic, or the like, through which microwaves and heat can pass. Thereby, it is possible to heat the internal gas of the housing portion 3 using the heat energy converted by the wave absorber 12, and thus it is possible to improve the drying efficiency. A dehumidifying member that removes moisture in the air can also be provided in the circulating air path 16. In this case, one or both of the exhaust port 17 and the intake port 18 can also not be provided.

[0082] [1-2. Operation]

[0083] The operation and effects of the drying machine 1 configured as described above will be described below.

[0084] The user opens the door 5, places the drying target in the placement portion 4 and houses it in the housing portion 3. When the user instructs the start of drying, the control device starts the drying operation. The control device drives the air blowing fan 15. The control device controls the microwave irradiation portion 6 to generate microwaves. The control device controls the motor 11 to rotate the antenna 8. The microwaves are irradiated to the inside of the housing portion 3 via the waveguide 7 and the antenna 8. Thereby, the moisture contained in the drying target is heated and evaporated. The control device estimates the electric field intensity inside the housing portion 3 based on the detection results of the antenna 8, the temperature detection portion 19, and adjusts the output of the microwave irradiation portion 6. The control device estimates the amount of moisture contained in the drying target based on the detection results of the weight detection portion 21 or the temperature detection portion 20. Then, when the rate of change of the amount of moisture is less than a predetermined value, the control device stops the irradiation of microwaves by the microwave irradiation portion 6, and stops the air blowing fan 15 and the motor 11, and ends the drying operation.

[0085] [1-3. Effects and the like]

[0086] As described above, in the present embodiment, the dryer 1 includes the housing portion 3 that houses the drying target, the microwave irradiation portion 6 that irradiates the drying target housed in the housing portion 3 with microwaves, and the wave absorber 12 that absorbs the microwaves irradiated from the microwave irradiation portion 6 and converts the microwaves into heat. Also, it is configured in such a manner that the air inside the housing portion 3 or the air flowing into the inside of the housing portion 3 is heated by the heat converted by the wave absorber 12. Thus, the air used for drying the drying target can be heated by the heat converted by the wave absorber 12 that has absorbed the excess microwaves, so that the drying of the drying target can be promoted and the drying efficiency can be improved.

[0087] In addition, in the present embodiment, the wave absorber 12 is provided at a position where the microwaves irradiated into the inside of the housing portion 3 reach and at a position where heat exchange with the air inside the housing portion 3 or the air flowing into the inside of the housing portion 3 is possible. Thus, the air used for drying the drying target can be heated by the heat converted by the wave absorber 12 that has absorbed the excess microwaves, so that the drying of the drying target can be promoted and the drying efficiency can be improved.

[0088] In addition, in the present embodiment, the wave absorber 12 is provided at a position where the air inside the housing portion 3 or the air flowing into the inside of the housing portion 3 directly contacts. Thus, heat dissipation loss can be suppressed, so that the drying efficiency can be improved.

[0089] In addition, in the present embodiment, the wave absorber 12 is provided at a position where the air inside the housing portion 3 or the air flowing into the inside of the housing portion 3 contacts through a partition through which heat can pass. Thus, heat dissipation loss can be suppressed, so that the drying efficiency can be improved.

[0090] In addition, in the present embodiment, the air flowing into the inside of the housing portion 3 includes air introduced from the outside. Thus, the drying of the drying target can be promoted and the drying efficiency can be improved.

[0091] In addition, in the present embodiment, the air flowing into the inside of the housing portion 3 includes air that is returned to the inside of the housing portion 3 after the air inside the housing portion 3 is dehumidified. Thus, the drying of the drying target can be promoted and the drying efficiency can be improved.

[0092] In addition, in the present embodiment, the wave absorber 12 is provided at an inner surface of the housing portion 3. Thus, heat dissipation loss can be suppressed, so that the drying efficiency can be improved.

[0093] Further, in the present embodiment, the wave absorber 12 is provided to a wall surface of a flow path (circulation air path 16 or air suction path 25) that constitutes air flowing into the inside of the housing portion 3. Thus, the air inside the housing portion 3 can be heated by the heat energy converted by the wave absorber 12, and the air flowing into the inside of the housing portion 3 from the circulation air path 16 or the air suction path 25 can also be heated, so that the drying efficiency can be improved.

[0094] Further, in the present embodiment, the wall surface shields microwaves and allows heat to pass therethrough. Thus, the air inside the housing portion 3 can be heated by the heat energy converted by the wave absorber 12, and the air flowing into the inside of the housing portion 3 from the circulation air path 16 or the air suction path 25 can also be heated, so that the drying efficiency can be improved.

[0095] Further, in the present embodiment, the wave absorber 12 is provided along the flow of the air inside the housing portion 3. Thus, the drying target can be uniformly dried.

[0096] Further, in the present embodiment, the wave absorber 12 is provided in the vicinity of the flow inlet 23 for flowing air into the inside of the housing portion 3. Thus, heat loss can be suppressed, so that the drying efficiency can be improved.

[0097] Further, in the present embodiment, the wave absorber 12 is provided in the absorber housing portion 13 that is partitioned by a partition portion that transmits microwaves inside the housing portion 3. Thus, the volume of the housing portion 3 can be ensured. Further, when the user takes out the dried drying target, the contact with the high-temperature wave absorber 12 can be suppressed.

[0098] Further, in the present embodiment, the inner surface of the absorber housing portion 13 has a shape that reflects at least a part of the microwaves toward the wave absorber 12. Thus, the absorption efficiency of the wave absorber 12 for microwaves can be improved.

[0099] Further, in the present embodiment, the absorber housing portion 13 constitutes a flow path of air flowing into the inside of the housing portion 3. Thus, heat loss can be suppressed, so that the drying efficiency can be improved.

[0100] Further, in the present embodiment, the wave absorber 12 is provided in the antenna housing portion 9 that houses the antenna 8 for irradiating microwaves into the inside of the housing portion 3. Thus, the drying machine 1 can be made compact.

[0101] Further, in the present embodiment, the drying machine 1 has a flow outlet 24 for discharging the gas inside the housing portion 3 and a flow inlet 23 for flowing air into the inside of the housing portion 3. Thus, the inside gas can be discharged to the outside to suck the outside air or circulate the inside gas to perform dehumidification, so that the drying of the drying target can be promoted.

[0102] (Other implementation methods)

[0103] As described above, Embodiment 1 has been presented as an example of the technology disclosed herein. However, the technology disclosed herein is not limited to this and can be applied to embodiments with modifications, substitutions, additions, omissions, etc. Furthermore, new embodiments can be created by combining the constituent elements described in Embodiment 1 above.

[0104] Therefore, other implementation methods are illustrated below.

[0105] In Embodiment 1, as an example of the dryer of this disclosure, a dryer 1 is described in which the object to be dried is placed in the holding part 4 provided inside the storage part 3 and dried. The dryer of this disclosure can be a drum dryer that holds the object to be dried in the storage part of this disclosure, or it can be a dryer other than a drum dryer, a washer-dryer, etc. In addition, the object to be dried in this disclosure can be an item other than clothing, for example, it can be a cloth or leather product other than items worn by people such as towels, bedding, curtains, mats, shoes, etc., and may partially include metal such as buttons and zippers.

[0106] Furthermore, in Embodiment 1, the storage section 3 and the door 5 are described as examples of the shielding part of this disclosure. Alternatively, in addition to the storage section 3, the housing 2 may also function as an example of the shielding part of this disclosure, or the housing 2 may function as an example of the shielding part of this disclosure and replace the storage section 3. This improves shielding effectiveness and enhances security.

[0107] Furthermore, in Embodiment 1, in the second example, it was explained that the electromagnetic wave absorber 12 could be disposed on the antenna housing 9 instead of on the upper wall of the housing 3. In this case, the electromagnetic wave absorber 12 is closer to the antenna 8, and therefore absorbs more electromagnetic waves and is more prone to becoming hot compared to the case where it is disposed on the upper wall. As a result, it can be used as a replacement for the heater 22 disposed on the intake passage 25, and the heater 22 can be miniaturized or omitted.

[0108] Furthermore, the above-described embodiments are used to illustrate the technology disclosed herein, and therefore various changes, substitutions, additions, omissions, etc., can be made within the scope of the claims or their equivalents.

[0109] (Postscript)

[0110] Based on the description of the above embodiments, the following technology is disclosed.

[0111] (Technology 1)

[0112] The dryer of Technology 1 includes a housing that houses a drying object, a microwave irradiation section that irradiates a microwave to the drying object housed in the housing, and a wave absorber that absorbs the microwave irradiated from the microwave irradiation section and converts it into heat. The air inside the housing or the air flowing into the housing is heated by the heat converted by the wave absorber.

[0113] Thus, the air used for drying the drying object can be heated by the heat converted by the wave absorber that absorbs the excess microwave, and thus the drying of the drying object can be promoted and the drying efficiency can be improved.

[0114] (Technology 2)

[0115] In the dryer of Technology 2, on the basis of the dryer described in Technology 1, the wave absorber is provided at a position where the microwave irradiated into the inside of the housing reaches and at a position where heat exchange with the air inside the housing or the air flowing into the inside of the housing is possible.

[0116] Thus, the air used for drying the drying object can be heated by the heat converted by the wave absorber that absorbs the excess microwave, and thus the drying of the drying object can be promoted and the drying efficiency can be improved.

[0117] (Technology 3)

[0118] In the dryer of Technology 3, on the basis of the dryer described in Technology 2, the wave absorber is provided at a position where the wave absorber directly contacts the air inside the housing or the air flowing into the inside of the housing.

[0119] Thus, the heat dissipation loss can be suppressed, and thus the drying efficiency can be improved.

[0120] (Technology 4)

[0121] In the dryer of Technology 4, on the basis of the dryer described in Technology 2 or 3, the wave absorber is provided at a position where the wave absorber is separated from the air inside the housing or the air flowing into the inside of the housing by a partition through which heat can pass.

[0122] Thus, the heat dissipation loss can be suppressed, and thus the drying efficiency can be improved.

[0123] (Technology 5)

[0124] In the dryer of Technology 5, on the basis of the dryer described in any one of Technologies 1 to 4, the air flowing into the inside of the housing includes air introduced from the outside.

[0125] Thus, the drying of the drying object can be promoted and the drying efficiency can be improved.

[0126] (Technology 6)

[0127] In the dryer of Technology 6, on the basis of the dryer described in any one of Technologies 1 to 5, the air flowing into the inside of the housing portion contains air that is returned to the inside of the housing portion after the air of the inside of the housing portion is dehumidified.

[0128] Thus, it is possible to promote drying of the drying target object and improve drying efficiency.

[0129] (Technology 7)

[0130] In the dryer of Technology 7, on the basis of the dryer described in any one of Technologies 1 to 6, the wave absorber is provided to the inner surface of the housing portion.

[0131] Thus, it is possible to suppress heat loss, and thus it is possible to improve drying efficiency.

[0132] (Technology 8)

[0133] In the dryer of Technology 8, on the basis of the dryer described in Technology 7, the wave absorber is provided to the wall surface that constitutes a flow path of air flowing into the inside of the housing portion.

[0134] Thus, it is possible to heat the air of the inside of the housing portion with heat energy converted by the wave absorber, and it is also possible to heat the air flowing into the inside of the housing portion from the flow path of air, and thus it is possible to improve drying efficiency.

[0135] (Technology 9)

[0136] In the dryer of Technology 9, on the basis of the dryer described in Technology 8, the wall surface shields microwaves and allows heat to pass through.

[0137] Thus, it is possible to heat the air of the inside of the housing portion with heat energy converted by the wave absorber, and it is also possible to heat the air flowing into the inside of the housing portion from the flow path of air, and thus it is possible to improve drying efficiency.

[0138] (Technology 10)

[0139] In the dryer of Technology 10, on the basis of the dryer described in any one of Technologies 7 to 9, the wave absorber is provided along the flow of air of the inside of the housing portion.

[0140] Thus, it is possible to uniformly dry the drying target object.

[0141] (Technology 11)

[0142] In the dryer of Technology 11, on the basis of the dryer described in Technology 7, the wave absorber is provided in the vicinity of the flow inlet for flowing air into the inside of the housing portion.

[0143] Thus, heat loss can be suppressed, and thus drying efficiency can be improved.

[0144] (Technique 12)

[0145] In the dryer of Technique 12, on the basis of the dryer described in Technique 1 or 2, a wave absorber is provided in an absorber housing portion that is partitioned by a partition portion that transmits microwaves inside the housing portion.

[0146] Thus, the volume of the housing portion can be ensured. In addition, when the user takes out the dried drying target, contact with the high-temperature wave absorber portion can be suppressed.

[0147] (Technique 13)

[0148] In the dryer of Technique 13, on the basis of the dryer described in Technique 12, an inner surface of the absorber housing portion has a shape that reflects at least a portion of the microwaves toward the wave absorber portion.

[0149] Thus, the absorption efficiency of the wave absorber portion for microwaves can be improved.

[0150] (Technique 14)

[0151] In the dryer of Technique 14, on the basis of the dryer described in Technique 12 or 13, the absorber housing portion constitutes a flow path for air flowing into the inside of the housing portion.

[0152] Thus, heat loss can be suppressed, and thus drying efficiency can be improved.

[0153] (Technique 15)

[0154] In the dryer of Technique 15, on the basis of the dryer described in any one of Techniques 1 to 4, a wave absorber is provided in an antenna housing portion that houses an antenna that irradiates microwaves into the inside of the housing portion.

[0155] Thus, the dryer can be made compact.

[0156] (Technique 16)

[0157] In the dryer of Technique 16, on the basis of the dryer described in any one of Techniques 1 to 4, a flow outlet through which air inside the housing portion is discharged and a flow inlet through which air flows into the inside of the housing portion are provided.

[0158] Thus, a portion of the water vapor contained in the internal gas is discharged to the outside, and drying of the drying target can be promoted.

[0159] (Technique 17)

[0160] In the dryer of Technology 17, on the basis of the dryer described in Technology 16, an air suction path that communicates with the flow inlet is included, the air suction path is provided in a manner to indirectly contact the wave absorber with a wall surface of the housing portion formed of a material that shields microwaves and through which heat can pass, and a wave absorption portion is provided to an inner surface of the housing portion.

[0161] Thus, the wave absorber directly contacts the internal gas of the housing portion, and the internal gas of the housing portion can be efficiently heated using heat energy converted by the wave absorber.

[0162] (Technology 18)

[0163] In the dryer of Technology 18, on the basis of the dryer described in Technology 16, an air suction path having an air suction port that sucks external gas is provided in a manner to communicate with the flow inlet, and an absorber housing portion for housing the wave absorber is formed inside the housing portion using a partition portion that transmits microwaves, the absorber housing portion constituting a partial portion of the air suction path between the air suction port and the flow inlet.

[0164] Thus, the wave absorber can indirectly heat the internal gas by heating the partition portion. In addition, if the partition portion is in a manner to pass the internal gas, the internal gas can also be directly heated. The partition portion can inhibit a situation in which a user contacts the wave absorber at a higher temperature when taking out the dried drying target.

[0165] (Technology 19)

[0166] In the dryer of Technology 19, on the basis of the dryer described in Technology 16, a circulating air path that communicates the flow outlet with the flow inlet is included, the circulating air path has an air exhaust port that exhausts the internal gas of the housing portion to the outside and an air suction port that sucks external gas, and the circulating air path is provided in a manner to indirectly contact the wave absorber with a wall surface of the housing portion formed of a material that shields microwaves and through which heat can pass.

[0167] Thus, a portion of water vapor contained in the internal gas is exhausted to the outside, and drying of the drying target is promoted. In addition, air flowing in the circulating air path can be heated using the wave absorber, and thus, a decrease in temperature in the circulating air path can be inhibited, and drying efficiency can be improved.

[0168] (Technology 20)

[0169] In the dryer of Technology 20, on the basis of the dryer described in Technology 16, a circulating air path that communicates the flow outlet with the flow inlet is included, the circulating air path has an air exhaust port that exhausts the internal gas of the housing portion to the outside and an air suction port that sucks external gas, and an absorber housing portion for housing the wave absorber is formed inside the housing portion using a partition portion that transmits microwaves, the absorber housing portion constituting a partial portion of the circulating air path.

[0170] Thus, the exchange of the inside gas of the housing with the outside gas and the heating of the air by the wave absorber can be performed by one circulation air path 16, and thus the drying efficiency can be improved.

[0171] Industrial applicability

[0172] The present disclosure can be applied to, for example, a drying machine for household or commercial use. Specifically, for example, the present disclosure can be applied to a vertical washing drying machine, a drum drying machine, a drum washing drying machine, or the like.

[0173] Explanation of reference numerals

[0174] 1: Drying machine; 2: Housing; 3: Housing; 4: Placing portion; 5: Door; 6: Microwave irradiation portion; 7: Waveguide; 8: Antenna; 9: Antenna housing portion; 10: Partition portion; 11: Motor; 12: Wave absorber; 13: Absorber housing portion; 14: Partition portion; 15: Supply fan; 16: Circulation air path; 17: Exhaust port; 18: Suction port; 19: Temperature detection portion; 20: Temperature detection portion; 21: Weight detection portion; 22: Heater; 23: Inflow port; 24: Outflow port; 25: Suction air path; 26: Exhaust air path; 29: Inflow port side air path; 30: Outflow port side air path.

Claims

1. A dryer, wherein, The dryer includes: The storage section is for storing dry items; A microwave irradiation unit that irradiates the dried object housed in the housing with microwaves; and The electromagnetic wave absorbing section absorbs microwaves irradiated by the microwave irradiating section and converts them into heat. It is configured such that the air inside the storage section or the air flowing into the storage section is heated by the heat obtained by the conversion of the electromagnetic wave absorption section.

2. The dryer according to claim 1, wherein, The electromagnetic wave absorbing part is located at the position where microwaves irradiating the interior of the receiving part reach, and is a position where heat exchange can occur with the air inside the receiving part or with the air flowing into the interior of the receiving part.

3. The dryer according to claim 2, wherein, The radio wave absorbing part is located in direct contact with the air inside the receiving part or the air flowing into the receiving part.

4. The dryer according to claim 2, wherein, The radio wave absorbing part is located at a position where it is separated from the air inside the housing or the air flowing into the housing by a heat-resistant partition.

5. The dryer according to any one of claims 1 to 4, wherein, The air flowing into the interior of the storage section includes air introduced from the outside.

6. The dryer according to any one of claims 1 to 4, wherein, The air flowing into the interior of the storage section includes air that has been dehumidified before returning to the interior of the storage section.

7. The dryer according to any one of claims 1 to 3, wherein, The electromagnetic wave absorbing part is disposed on the inner surface of the receiving part.

8. The dryer according to claim 7, wherein, The electromagnetic wave absorbing part is provided in the wall surface of the receiving part, forming a flow path for air flowing into the interior of the receiving part.

9. The dryer according to claim 8, wherein, The wall shields microwaves while allowing heat to pass through.

10. The dryer according to claim 7, wherein, The radio wave absorbing section is arranged along the airflow inside the receiving section.

11. The dryer according to claim 7, wherein, The electromagnetic wave absorbing part is located near the inlet for allowing air to flow into the interior of the receiving part.

12. The dryer according to claim 1 or 2, wherein, The radio wave absorbing part is located inside the receiving part, which is a receiving part divided by a microwave-transmitting partition.

13. The dryer according to claim 12, wherein, The inner surface of the absorber housing has a shape that reflects at least a portion of microwaves toward the electromagnetic wave absorbing part.

14. The dryer according to claim 12, wherein, The absorber housing section forms a flow path for air to flow into the interior of the housing section.

15. The dryer according to any one of claims 1 to 4, wherein, The radio wave absorbing part is provided in an antenna housing part that houses an antenna for irradiating microwaves into the interior of the housing part.

16. The dryer according to any one of claims 1 to 4, wherein, The dryer has an outlet for discharging air from the interior of the receiving section and an inlet for allowing air to flow into the interior of the receiving section.

17. The dryer according to claim 16, wherein, The dryer includes an air intake path that communicates with the inlet. The air intake path is configured to indirectly contact the electromagnetic wave absorber through the wall of the receiving part, which is made of a material such as metal that shields microwaves but allows heat to pass through. The electromagnetic wave absorbing part is disposed on the inner surface of the receiving part.

18. The dryer according to claim 16, wherein, An air intake path with an air inlet for drawing in external gas is configured to communicate with the inlet. An absorber housing for housing the radio wave absorber is formed inside the housing using a microwave-transmitting partition. The absorber housing portion forms part of the air intake path between the air intake port and the inlet port.

19. The dryer according to claim 16, wherein, The dryer includes a circulating air path that connects the outlet and the inlet. The circulating air path has an exhaust port for discharging the internal gas of the receiving section to the outside and an intake port for drawing in external gas. The circulating air path is arranged to indirectly contact the electromagnetic wave absorber through the wall of the housing part, which is made of a material such as metal that shields microwaves but allows heat to pass through. The electromagnetic wave absorbing part is disposed on the inner surface of the receiving part.

20. The dryer according to claim 16, wherein, The dryer includes a circulating air path that connects the outlet and the inlet. The circulating air path has an exhaust port for discharging the internal gas of the receiving section to the outside and an intake port for drawing in external gas. An absorber housing for housing the radio wave absorber is formed inside the housing using a microwave-transmitting partition. The absorber housing portion constitutes part of the circulating air path.

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