Hot air supply device for dryer

Abstract

The utility model discloses a hot air supply device for a dryer, which comprises a drying box, a hot air supply device and a waste heat return pipe, the hot air supply device comprises a hot air outlet pipeline and an air inlet pipeline, and the hot air supply device is communicated with the inside of the drying box through the hot air outlet pipeline. An air inlet pipeline in the hot air supply device is connected with a first air pump; the air inlet pipeline is detachably provided with a filtering assembly; and one end of the waste heat return pipe is communicated with the interior of the drying box, and the other end of the waste heat return pipe is communicated with the second air pump. The waste heat return pipe is arranged in the hot air supply device in a surrounding mode, waste heat in the drying box can provide heat energy for the hot air supply device through the waste heat return pipe, heat energy output of heating pieces can be effectively reduced, energy is saved, moisture and impurities in the drying box can be discharged, and dried objects are prevented from being polluted; and by arranging the filtering assembly and the impurity discharging opening, air is filtered, and meanwhile cleaning is conducted through the impurity discharging opening.

Description

TECHNICAL FIELD

[0001] The utility model relates to drying technical field, concretely is a kind of hot air supply device for dryer. BACKGROUND

[0002] In the working process of dryer, hot air supply device is one of its core components, it directly influences the drying efficiency and drying quality of dryer.

[0003] In prior art, patent No.CN202023180566.7 utility model patent discloses a kind of dryer, it is related to washing equipment technical field.The dryer includes cabinet, and circulating air inlet and hot air conveying passage are equipped on cabinet;Heating assembly, with circulating air inlet and hot air conveying passage are all communicated, for heating natural wind and the circulating air of cabinet interior to preset temperature;Suspension assembly, it is set in cabinet, for hanging the article to be dried, and suspension assembly is equipped with hot air passage, and hot air passage is communicated with hot air conveying passage and the inside of cabinet;Exhaust component, including exhaust pipe, exhaust pipe is communicated with outside and the inside of cabinet, to exhaust the wet wind in cabinet to outside.

[0004] The above-mentioned patent provides a kind of dryer, the device is by the hot air circulation of cabinet interior is delivered to hot air conveying pipeline, realizes the hot air circulation utilization in cabinet, reduces heat loss, improves energy utilization rate;Enhance the flowability of hot air in cabinet, improve drying efficiency, reduce drying length and equipment running time;But the hot air of exhaust in drying box interior can have the water vapor evaporated in the drying article, even some impurities and debris are taken away, therefore, when the exhaust waste gas hot air of drying box interior and the new hot air of hot air conveying pipeline are mixed, are delivered to drying box again, it will cause the hot air of new delivery in drying box contain water vapor and impurities, not only reduce drying efficiency, the drying article can be also contaminated;It is further improved. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of hot air supply device for dryer, it is designed to improve the existing dryer recycling the hot air of exhaust in drying box interior, but the hot air of exhaust in drying box interior can have the water vapor evaporated in the drying article, even some impurities and debris are taken away, are delivered to drying box again, it will cause the hot air of new delivery in drying box contain water vapor and impurities, not only reduce drying efficiency, the drying article can be also contaminated.

[0006] The utility model discloses a hot -blast supply device for dryer, including drying box, still including hot -blast supply device and waste heat reflux pipe, the hot -blast supply device includes hot -blast outlet pipeline and air inlet pipeline, the hot -blast supply device is through hot -blast outlet pipeline and communicates the inside of drying box, and the air inlet pipeline in hot -blast supply device is connected with first air pump, the air inlet pipeline detachably is provided with filter assembly, the waste heat reflux pipe is wound and is arranged in the box of hot -blast supply device, and one end communicates drying box inside, and the other end communicates second air pump.

[0007] Preferably, the hot air supply device comprises a hot air cavity, an auxiliary heating cavity and a mounting cover, the hot air supply device is sequentially provided with the hot air cavity and the auxiliary heating cavity from inside to outside, the auxiliary heating cavity is arranged around the hot air cavity, a plurality of heating fins are arranged in the hot air cavity, and the waste heat reflux pipe is embedded in the auxiliary heating cavity.

[0008] Preferably, the hot air supply device further comprises hexagonal bolts and bolt holes, a plurality of hexagonal bolts are symmetrically arranged around the outer end face of the mounting cover, the hot air supply device is provided with corresponding bolt holes at the positions of the hexagonal bolts, and the hexagonal bolts are mounted in the bolt holes.

[0009] Preferably, the filter assembly comprises a mounting cavity and a filter plate, the mounting cavity is arranged on the air inlet pipeline, and the filter plate is detachably mounted in the mounting cavity.

[0010] Preferably, mounting bolts are symmetrically arranged at the upper ends of the filter plate, and the filter plate is detachably mounted on the upper end face of the mounting cavity through the mounting bolts.

[0011] Preferably, the air inlet pipeline comprises an impurity discharge port, the impurity discharge port is arranged at the position of the bottom of the front end of the filter assembly, and a plugging cover is threadedly arranged at the opening end of the impurity discharge port.

[0012] Preferably, the waste heat reflux pipe comprises a reflux inlet end and a reflux outlet end, the reflux inlet end of the waste heat reflux pipe communicates with the inside of the drying box, and the reflux outlet end of the waste heat reflux pipe is connected with the second air pump.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. By setting the waste heat return pipe around the hot air supply device, the waste heat inside the drying box can provide heat energy for the hot air supply device through the waste heat return pipe, which can effectively reduce the heat energy output of the heating sheet, save energy, and can discharge the moisture and impurities inside the drying box to avoid pollution of the drying material.

[0015] 2. The utility model discloses a filter assembly and impurity discharge outlet can be set up, can filter to the conveying air, can clear the impurity through the impurity discharge outlet simultaneously. ACCURATE DRAWINGS

[0016] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0017] Figure 2 It is the section structure schematic diagram of the hot air supply device of the utility model;

[0018] Figure 3 It is the internal three-dimensional structure schematic diagram of the hot air supply device of the utility model;

[0019] Figure 4 It is the structure schematic diagram of the installation cover of the utility model;

[0020] Figure 5 It is the structure schematic diagram of the waste heat return pipe of the utility model.

[0021] In the drawing: 1, drying box; 2, hot air supply device; 201, hot air cavity; 202, heating sheet; 203, auxiliary heating cavity; 204, bolt hole; 205, hot air outlet pipeline; 206, installation cover; 207, hexagonal bolt; 208, air inlet pipeline; 209, impurity discharge outlet; 210, plugging cover; 3, waste heat return pipe; 301, return inlet end; 302, return outlet end; 4, filter assembly; 401, installation cavity; 402, filter plate; 403, mounting bolt; 5, first air pump; 6, second air pump. SPECIFIC IMPLEMENTATION

[0022] In the utility model, unless another explicit provision and limitation, the terms "installation", "connection", "connection", "fixing" and so on should be broad-sense understood, for example, can be fixed connection, also can be detachable connection, or integral; can be mechanical connection, also can be electrical connection; can be directly connected, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements or the interaction of two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances.

[0023] The following is further explained in conjunction with the drawings and specific embodiments:

[0024] Example 1

[0025] As Figures 1-4 shown, a hot air supply device for a dryer includes a drying box 1, further includes a hot air supply device 2 and a waste heat return pipe 3, the hot air supply device 2 includes a hot air outlet pipe 205 and an air inlet pipe 208, the hot air supply device 2 is communicated with the inside of the drying box 1 through the hot air outlet pipe 205, and the air inlet pipe 208 in the hot air supply device 2 is connected with a first air pump 5; through the first air pump 5, air can be delivered into the hot air supply device 2 for heating, and then delivered into the drying box 1, the hot air supply device 2 includes a hot air cavity 201, an auxiliary heating cavity 203 and a mounting cover 206, the hot air supply device 2 is sequentially provided with the hot air cavity 201 and the auxiliary heating cavity 203 from inside to outside, the auxiliary heating cavity 203 is arranged around the hot air cavity 201, and a plurality of heating fins 202 are arranged in the hot air cavity 201, and the waste heat return pipe 3 is embedded in the auxiliary heating cavity 203; through the arrangement of the heating fins 202, air can be heated, and the waste heat return pipe 3 is embedded in the hot air supply device 2, so that cold air in the hot air supply device 2 can be heated by waste heat, and the utilization rate of waste heat is improved. The mounting cover 206 is arranged on the cavity opening end surface of the hot air supply device 2, the hot air supply device 2 further includes hexagonal bolts 207 and bolt holes 204, a plurality of hexagonal bolts 207 are symmetrically arranged around the outer end surface of the mounting cover 206, the hot air supply device 2 is provided with corresponding bolt holes 204 at positions corresponding to the hexagonal bolts 207, and the hexagonal bolts 207 are installed in the bolt holes 204. The mounting cover 206 is provided with the air inlet pipe 208 communicated with the hot air cavity 201, and the hot air supply device 2 is provided with the hot air outlet pipe 205 communicated with the hot air cavity 201 at an end away from the mounting cover 206, the mounting cover 206 is arranged through the hexagonal bolts 207 and the bolt holes 204, so that the mounting cover 206 can be conveniently disassembled and installed.

[0026] As Figure 4 and Figure 5As shown, the air inlet pipe 208 is detachably provided with a filter assembly 4; the filter assembly 4 comprises a mounting cavity 401 and a filter plate 402, the mounting cavity 401 is arranged on the air inlet pipe 208, and the filter plate 402 is detachably mounted in the mounting cavity 401. The upper end of the filter plate 402 is symmetrically provided with mounting bolts 403, and the filter plate 402 is detachably mounted on the upper end face of the mounting cavity 401 through the mounting bolts 403. By detachably mounting the filter plate 402, the air delivered into the hot air supply device 2 can be filtered to prevent pollution to the dried objects, and the filter plate 402 can be conveniently disassembled and replaced by mounting through the mounting bolts 403. The air inlet pipe 208 comprises a foreign matter discharge port 209, and the air inlet pipe 208 is provided with the foreign matter discharge port 209 at the position of the bottom of the front end of the filter assembly 4, and the opening end of the foreign matter discharge port 209 is threadedly provided with a plugging cover 210. By arranging the foreign matter discharge port 209, the foreign matter filtered by the filter plate 402 can be conveniently cleaned. The waste heat return pipe 3 is wound in the box of the hot air supply device 2, one end of the waste heat return pipe 3 communicates with the inside of the drying box 1, and the other end of the waste heat return pipe 3 communicates with the second air pump 6; the waste heat return pipe 3 comprises a return inlet end 301 and a return outlet end 302, the return inlet end 301 of the waste heat return pipe 3 communicates with the inside of the drying box 1, and the return outlet end 302 of the waste heat return pipe 3 is connected with the second air pump 6. By arranging the second air pump 6 at the return outlet end 302, the discharge efficiency of the waste heat in the drying box 1 can be increased.

[0027] Example 2

[0028] As Figures 1-4 shown, a hot air supply device for a dryer comprises a drying box 1, and further comprises a hot air supply device 2 and a waste heat return pipe 3. The hot air supply device 2 comprises a hot air outlet pipe 205 and an air inlet pipe 208, and the hot air supply device 2 communicates with the inside of the drying box 1 through the hot air outlet pipe 205. The air inlet pipe 208 of the hot air supply device 2 is connected with a first air pump 5. The hot air supply device 2 comprises a hot air cavity 201, an auxiliary heating cavity 203 and a mounting cover 206. The hot air cavity 201 and the auxiliary heating cavity 203 are sequentially arranged from inside to outside in the hot air supply device 2. The auxiliary heating cavity 203 surrounds the hot air cavity 201. A plurality of heating fins 202 are arranged in the hot air cavity 201. The waste heat return pipe 3 is embedded in the auxiliary heating cavity 203. The mounting cover 206 is arranged on the cavity opening end face of the hot air supply device 2. The hot air supply device 2 further comprises hexagonal bolts 207 and bolt holes 204. A plurality of hexagonal bolts 207 are symmetrically arranged around the outer end face of the mounting cover 206. The hot air supply device 2 is provided with corresponding bolt holes 204 at positions corresponding to the hexagonal bolts 207. The hexagonal bolts 207 are mounted in the bolt holes 204. The mounting cover 206 is provided with the air inlet pipe 208 which communicates with the hot air cavity 201. The hot air supply device 2 is provided with the hot air outlet pipe 205 which communicates with the hot air cavity 201 at the end away from the mounting cover 206.

[0029] As Figure 4 and Figure 5 shown, the air inlet pipe 208 is detachably provided with a filter assembly 4; the filter assembly 4 comprises a mounting cavity 401 and a filter plate 402, the mounting cavity 401 is arranged on the air inlet pipe 208, and the filter plate 402 is detachably mounted in the mounting cavity 401. The upper end of the filter plate 402 is symmetrically provided with a mounting bolt 403, and the filter plate 402 is detachably mounted on the upper end face of the mounting cavity 401 through the mounting bolt 403. The air inlet pipe 208 comprises a impurity discharge port 209, and the air inlet pipe 208 is provided with the impurity discharge port 209 at the position of the bottom of the front end of the filter assembly 4, and the opening end of the impurity discharge port 209 is threadedly provided with a plugging cover 210. The waste heat return pipe 3 is woundly arranged in the box body of the hot air supply device 2, and one end is communicated with the inside of the drying box 1 and the other end is communicated with the second air pump 6; the waste heat return pipe 3 comprises a return inlet end 301 and a return outlet end 302, the return inlet end 301 of the waste heat return pipe 3 is communicated with the inside of the drying box 1, and the return outlet end 302 of the waste heat return pipe 3 is connected with the second air pump 6.

[0030] The working principle of the utility model is: the first air pump 5 sends air to the hot air cavity 201 in the hot air supply device 2 through the air inlet pipe 208, and the air is filtered by the filter assembly 4 and heated by the heating sheet 202, and then the hot air is sent to the drying box 1 through the hot air outlet pipe 205, and then the hot air flows in the drying box 1 and is discharged by the second air pump 6 through the waste heat return pipe 3, the waste heat return pipe 3 is arranged in the auxiliary heating cavity 203, and the hot gas in the drying box 1 heats the hot air cavity 201 through the waste heat return pipe 3, which can effectively reduce the heating power of the heating sheet, improve the utilization rate of waste heat and save energy; when the impurities filtered in the filter assembly 4 are too much, the impurities will enter the impurity discharge port 209, and the impurities can be cleaned by opening the plugging cover 210.

[0031] In conclusion, the utility model can provide heat energy for the hot air supply device 2 by the waste heat return pipe 3 arranged in the hot air supply device 2, can effectively reduce the heat energy output of the heating sheet 202, save energy, and can discharge the moisture and impurities in the drying box 1, avoid the pollution of the drying material; by arranging the filter assembly 4 and the impurity discharge port 209, the air can be filtered, and the impurities can be cleaned through the impurity discharge port 209.

[0032] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hot air supply device for a dryer comprising a drying cabinet (1), characterized in that, Also include hot air supply device (2) and waste heat return pipe (3), the hot air supply device (2) includes hot air outlet pipe (205) and air inlet pipe (208), the hot air supply device (2) is communicated with the inside of drying box (1) by hot air outlet pipe (205), and the air inlet pipe (208) in the hot air supply device (2) is connected with first air pump (5);The air inlet pipe (208) is detachably provided with filter assembly (4);The waste heat return pipe (3) is woundly arranged in the box of hot air supply device (2), one end is communicated with the inside of drying box (1), and the other end is communicated with second air pump (6).

2. The hot air supply device for a dryer according to claim 1, wherein The hot air supply device (2) includes hot air cavity (201), auxiliary heating cavity (203) and mounting cover (206), the hot air supply device (2) is sequentially provided with hot air cavity (201) and auxiliary heating cavity (203) from inside to outside, the auxiliary heating cavity (203) is arranged around the hot air cavity (201), a plurality of heating fins (202) are arranged in the hot air cavity (201), and the waste heat return pipe (3) is embedded in the auxiliary heating cavity (203); The mounting cover (206) is arranged on the cavity opening end surface of the hot air supply device (2), the mounting cover (206) is provided with air inlet pipe (208) communicated with the hot air cavity (201), and the hot air supply device (2) is provided with hot air outlet pipe (205) communicated with the hot air cavity (201) away from the mounting cover (206).

3. The hot air supply device for a clothes dryer according to claim 2, wherein The hot air supply device (2) further includes hexagonal bolt (207) and bolt hole (204), a plurality of hexagonal bolts (207) are symmetrically arranged around the outer end surface of the mounting cover (206), the hot air supply device (2) is provided with a corresponding bolt hole (204) corresponding to the position of the hexagonal bolt (207), and the hexagonal bolt (207) is installed in the bolt hole (204).

4. The hot air supply device for a dryer according to claim 1, wherein The filter assembly (4) includes mounting cavity (401) and filter plate (402), the air inlet pipe (208) is provided with mounting cavity (401), and the filter plate (402) is detachably installed in the mounting cavity (401).

5. The hot air supply device for a clothes dryer according to claim 4, wherein The upper end of the filter plate (402) is symmetrically provided with mounting bolt (403), and the filter plate (402) is detachably installed on the upper end surface of the mounting cavity (401) through the mounting bolt (403).

6. The hot air supply device for a clothes dryer according to claim 5, wherein The air inlet pipe (208) includes impurity discharge port (209), the air inlet pipe (208) is provided with impurity discharge port (209) at the position of the bottom of the front end of the filter assembly (4), and the opening end of the impurity discharge port (209) is threadedly provided with a plugging cover (210).

7. The hot air supply device for a clothes dryer according to claim 1, wherein The waste heat return pipe (3) includes return inlet end (301) and return outlet end (302), the return inlet end (301) of the waste heat return pipe (3) is communicated with the inside of the drying box (1), and the return outlet end (302) of the waste heat return pipe (3) is connected with the second air pump (6).

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