JP5574262B2 - Air dryer airway structure - Google Patents

Description

  The present invention relates to an air dryer structure of an electric dryer, and more particularly to an air dryer structure of an electric dryer that can reduce unevenness in drying of a sample without a main body becoming large in the left-right direction.

  An electric drying cabinet for drying a sample with an electric heater is shown in FIG. The electric dryer 101 shown in FIG. 3 is a door that can open and close an opening 108 at the front of a main body 107 formed in a box shape by left and right side walls 102 and 103, a rear wall 104, an upper wall 105, and a lower wall 106. 109 is provided, and a drying chamber 110 is formed in the main body 107.

  In the electric drying chamber 101, a heating chamber 112 is formed by an upper partition wall 111 in the upper part of the main body 107. A suction hole 113 for sucking hot air from the drying chamber 110 into the heating chamber 112 is formed in the upper partition wall 111, and a shutter 114 for adjusting the inside air circulation amount is installed in the suction hole 113. In the heating chamber 112, an electric heater 115 and a fan 117 of the blower 116 are installed. The motor 118 of the blower 115 is disposed outside the upper wall 105 and is covered with a cover 119.

  The electric dryer 101 has an air inlet 120 facing the inside of the cover 119 in the upper wall 105, and the air inlet 120 communicates with the suction hole 113 through a communication passage 121 formed in the upper partition wall 111. The intake port 120 is provided with a damper 122 for adjusting the intake air amount. In addition, the electric dryer 101 has an exhaust port 123 that faces the inside of the cover 119 in the upper wall 105 and communicates with the drying chamber 110. The intake port 120 and the exhaust port 123 communicate with outside air through an intake passage 125 and an exhaust passage 126 that are partitioned by a partition wall 124 in the cover 119.

  In the electric drying chamber 101, a rear hot air passage 128 is formed by a rear partition wall 127 in the rear portion of the main body 107. The rear hot air passage 128 is formed such that the upper part communicates with the heating chamber 112 and the lower part reaches the lower wall 106. A plurality of rear outlet holes 129 for blowing hot air from the rear hot air passage 128 to the drying chamber 110 are formed in the rear partition 127.

  In the electric dryer 101, a plurality of left and right tray receivers 131 and 132 for placing the tray 130 on the left and right side walls 102 and 103 in the main body 107 are arranged side by side. The electric dryer 101 sends hot air generated by the blower 116 to the drying chamber 110 in the main body 107 using the electric heater 115 as a heat source from the rear blowing hole 129 into the drying chamber 110, and the hot air in the drying chamber 110 is sent from the suction hole 113. While sucking and circulating, the sample in the tray 130 disposed in the drying chamber 110 is dried.

  The electric drying chamber 101 adjusts the amount of inside air circulated between the heating chamber 112 and the drying chamber 110 by a shutter 114. Further, the electric drying chamber 101 opens the damper 122 of the intake port 120 to take in outside air and exhausts a part of the inside air from the exhaust port 123 depending on the dry state, so that the air in the drying chamber 110 is replaced and dried. .

  In the conventional air dryer structure of the electric drying cabinet, hot air is blown into the drying chamber from the hot air passage formed on the left and right side walls in the main body (Patent Document 1), and the hot air passage formed on one of the side walls in the main body. The hot air is blown out into the drying chamber and the hot air in the drying chamber is sucked into a suction passage formed on one of the other side walls (Patent Document 2).

Japanese Utility Model Publication No. 62-176696 JP 2001-103905 A

  However, the air passage structure of the electric dryer described in Patent Document 1 is provided with air passages on the left and right sides of the main body, and blows hot air from the left and right directions into the drying chamber. It was larger in the left-right direction. Since the air passage structure of the electric drying cabinet described in Patent Document 2 is also provided with air passages on the left and right sides of the main body, and hot air flows from one side surface to the other side surface in the drying chamber, The body was enlarged in the left and right direction by the amount of the wind path.

  In addition, the air passage structure of the electric drying cabinet described in Patent Document 1 that blows hot air from the left and right directions into the drying chamber has an electric heater in each of the left and right air passages in order to make the hot air temperatures of the left and right air passages uniform. One by one was needed. Furthermore, the air passage structure of the electric dryer as shown in FIG. 3 that blows hot air from the rear into the drying chamber, and the air passage structure of the electric dryer as described in Patent Document 2 that blows hot air into the drying chamber in either one of the left and right directions are as follows: There was a risk of uneven drying.

  An object of the present invention is to prevent the main body from becoming large in the left-right direction and to reduce drying unevenness.

  The present invention provides an air dryer structure of an electric dryer for sending hot air generated by a blower using an electric heater as a heat source to a drying chamber in a main body, and drying a sample in a tray arranged in the drying chamber. A heating chamber is formed by the upper partition wall, a suction hole for sucking hot air from the drying chamber into the heating chamber is formed in the upper partition wall, the electric heater and the fan of the blower are installed in the heating chamber, A rear hot air passage is formed by a rear partition that has an upper portion communicating with the heating chamber and a lower portion reaching the lower wall of the main body. Forming a plurality of left and right tray receivers to be placed on the left and right side walls in the main body, and arranging left and right side hot air passages communicating with the rear hot air passages on the left and right tray receivers. The hot air of the left and right side hot air passage while formed, characterized in that the left and right side portions blowout hole to form a plurality blown into the drying chamber.

  The air dryer structure of the electric dryer according to the present invention dries hot air from three directions of the rear outlet hole of the rear partition and the side outlet holes of the left and right tray receivers, so that drying unevenness of the sample can be reduced. it can. Further, the air dryer structure of the electric dryer according to the present invention forms the side hot air passages by the left and right tray receivers, so that the left and right side partition walls are installed in the main body to form the left and right hot air passages. Compared with the road structure, the main body can be made smaller in the left-right direction by the thickness of the left and right side partition walls and the left and right hot air passages, and can be made compact.

1A is a front view of the electric dryer, FIG. 1B is a front view of the electric dryer with the door removed, and FIG. 1C is a cross-sectional view taken along line CC in FIG. 1A. FIG. (Example) FIG. 2 is a graph showing drying variations between the conventional electric dryer shown in FIG. 3 and the electric dryer of the present invention. (Example) 3A is a front view of the electric dryer, FIG. 3B is a front view of the electric dryer with the door removed, and FIG. 3C is a cross-sectional view taken along line CC in FIG. 3A. FIG. (Conventional example)

The air dryer structure of the electric dryer according to the present invention reduces drying unevenness by applying hot air to the sample from the three directions of the rear outlet hole of the rear partition and the side outlet holes of the left and right tray receivers, and the horizontal direction of the main body. Is to reduce the size of.
Embodiments of the present invention will be described below with reference to the drawings.

  1 and 2 show an embodiment of the present invention. In FIG. 1, 1 is an electric dryer. The electric drying cabinet 1 includes a left and right side walls 2, 3, a rear wall 4, an upper wall 5, and a lower wall 6 that form a box-shaped main body 7, and a door 9 that can open and close an opening 8 at the front of the main body 7. And a drying chamber 10 is formed in the main body 7.

  The electric dryer 1 has a heating chamber 12 formed between the upper wall 5 and the upper wall 5 in the upper part of the main body 7. A suction hole 13 for sucking hot air from the drying chamber 10 into the heating chamber 12 is formed in the upper partition wall 11, and a shutter 14 for adjusting the amount of inside air circulation is installed in the suction hole 13. In the heating chamber 12, an electric heater 15 and a fan 17 of a blower 16 are installed. The motor 18 of the blower 16 is disposed outside the upper wall 5 and is covered with a cover 19.

  The electric dryer 1 has an air inlet 20 facing the inside of the cover 19 on the upper wall 5. The intake port 20 communicates with the suction hole 13 through a communication passage 21 formed in the upper partition wall 11. The intake port 20 is provided with a damper 22 for adjusting the intake air amount. Further, the electric dryer 1 has an exhaust port 23 in the upper wall 5 facing the inside of the cover 19. The exhaust port 23 communicates with the drying chamber 10. The intake port 20 and the exhaust port 23 communicate with an intake passage 25 and an exhaust passage 26 that are partitioned by a partition wall 24 in the cover 19, respectively. The intake passage 25 and the exhaust passage 26 communicate the intake port 20 and the exhaust port 23 with the outside air.

  The electric drying cabinet 1 has a rear hot air passage 28 formed between the rear wall 4 and the rear wall 4 at the rear portion in the main body 7. The rear hot air passage 28 is formed such that the upper part communicates with the heating chamber 12 and the lower part reaches the lower wall 6. The rear partition wall 27 is formed with a plurality of rear outlet holes 29 for blowing hot air from the rear hot air passage 28 into the drying chamber 10.

  The electric dryer 1 is provided with a plurality of left and right tray receivers 31 and 32 which are placed on the left and right side walls 2 and 3 in the main body 7 side by side. The left and right tray receivers 31 and 32 are formed in the shape of a bowl having a lateral cross section, and are attached with the opening side directed toward the side walls 2 and 3, respectively. The left and right tray receivers 31, 32 form left and right side hot air passages 33, 34 whose front portions are closed inside and whose rear portions communicate with the rear hot air passage 28. A plurality of left and right side blowing holes 35 and 36 for blowing 34 hot air into the drying chamber 10 are formed.

  The rear outlet 29 and the left and right side outlets 35 and 36 are formed side by side in the horizontal direction so as to be at the same height position below the tray 30.

  Next, the operation will be described.

  When the sample is dried, the door 9 of the electric dryer 1 is opened, the tray 30 containing the sample is placed on the left and right tray receivers 31 and 32 in the main body 7, the door 9 is closed, and the electric heater 15 and the blower 16 are closed. And hot air is generated in the heating chamber 12. The hot air generated in the heating chamber 12 is sent out to the rear hot air passage 28 and blown out in the forward direction of the drying chamber 10 from the rear blow hole 29 of the rear partition wall 27. Further, the hot air in the rear hot air passage 28 flows to the left and right side hot air passages 33 and 34 formed in the left and right tray receivers 31 and 32, and the right and left sides of the drying chamber 10 from the left and right side outlet holes 35 and 36. Blown in the direction.

  The hot air blown out from the three directions into the drying chamber 10 dries the sample in the tray 30. The hot air after the sample is dried is sucked into the heating chamber 12 from the suction hole 13 of the upper partition 11 in the upward direction, heated again by the electric heater 15, and sent again to the rear hot air passage 28 as hot air by the blower 16. The hot air in the rear hot air passage 28 is blown out from the rear blowout hole 29 to the drying chamber 10 as described above, and is blown out from the side blowout holes 35 and 36 of the left and right tray receivers 31 and 32 to the drying chamber 10. To dry.

  Thereby, the electric dryer 1 sends the hot air generated in the heating chamber 12 by the blower 16 from the three directions to the drying chamber 10 using the electric heater 15 as a heat source, and circulates the hot air between the heating chamber 12 and the drying chamber 10. In the meantime, the sample in the tray 30 arranged in the drying chamber 10 is dried.

  The electric dryer 1 adjusts the amount of inside air circulating between the heating chamber 12 and the drying chamber 10 by opening and closing the shutter 14. Further, the electric drying cabinet 1 opens the damper 22 of the intake port 20 to take in outside air and exhausts a part of the inside air from the exhaust port 23 depending on the dry state, so that the air in the drying chamber 10 is replaced and dried. . When the air inlet 20 is fully opened and the shutter 14 is fully closed, the outside air sucked from the air inlet 20 is heated by the electric heater 15 and sent out to the rear hot air passage 28 by the blower 16, and the rear air outlet 29, After being blown into the drying chamber 10 from the side blowing holes 35 and 36 and passing through the tray 30 to dry the sample, it is exhausted to the outside through the exhaust port 23 without being circulated in the chamber.

  In this way, the electric dryer 1 blows hot air from the rear blow hole 29 of the rear partition wall 27 to the drying chamber 10 and hot air from the side blow holes 35 and 36 of the left and right tray receivers 31 and 32 to the drying chamber 10. The air passage structure blows out.

  Thereby, the air passage structure of the electric dryer 1 is dried by applying hot air to the sample from the three directions of the rear outlet hole 29 of the rear partition wall 27 and the side outlet holes 35 and 36 of the left and right tray receivers 31 and 32. As shown by the wavy line in FIG. 2, the drying unevenness of the sample can be reduced as compared with the conventional case indicated by the solid line. FIG. 2 shows a calculation result of drying rate (%) = dry weight ÷ initial weight when a predetermined time elapses after the sample to be tested is dried in each part in the electric dryer 1. The maximum variation (%) indicates the maximum value in the drying chamber 10 of {maximum value (%) in the same tray−minimum value (%)}.

  In addition, since the air channel structure of the electric dryer 1 is formed with the side hot air channels 33 and 34 by the left and right tray receivers 31 and 32, the left and right side partition walls are installed in the main body 7 and left and right Compared with the air channel structure forming the hot air channel, the main body 7 can be made smaller in the left and right direction by the thickness of the left and right side partition walls and the left and right hot air channels, and can be made compact.

  The air passage structure of the electric dryer according to the present invention prevents the main body from increasing in the left-right direction and can reduce unevenness in drying. Samples and the like are dried not only by the electric heater but also by hot air. Can be applied to the dryer.

DESCRIPTION OF SYMBOLS 1 Electric dryer 2 Right side wall 3 Left side wall 4 Back wall 7 Main body 10 Drying chamber 11 Upper partition 12 Heating chamber 13 Suction hole 15 Electric heater 16 Blower 20 Inlet 23 Exhaust 27 Rear partition 28 Rear hot air passage 29 Rear outlet Hole 30 Tray 31 Right tray receiver 32 Left tray receiver 33 Right side hot air passage 34 Left side hot air passage 35 Right side air outlet 36 Left side air outlet

Claims (1)

Sending hot air generated by a blower using an electric heater as a heat source to the drying chamber in the body,
In the air passage structure of the electric dryer for drying the sample in the tray placed in the drying chamber,
A heating chamber is formed by an upper partition in the upper part of the main body,
Forming a suction hole for sucking hot air from the drying chamber into the heating chamber in the upper partition;
Installing the electric heater and the fan of the blower in the heating chamber;
A rear hot air passage is formed by a rear partition, with the upper part communicating with the heating chamber at the rear part in the main body and the lower part reaching the lower wall of the main body,
Forming a plurality of rear outlet holes for blowing hot air from the rear hot air passage into the drying chamber in the rear partition;
A plurality of left and right tray holders for placing the tray on the left and right side walls in the main body are arranged side by side up and down,
The left and right tray receivers are formed with left and right side hot air passages communicating with the rear hot air passage, and a plurality of left and right side blowout holes for blowing hot air from the left and right side hot air passages into the drying chamber. Characteristic air dryer structure.

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