CN205352032U - Industry drying -machine with air inlet preheats function - Google Patents

Abstract

The utility model discloses an industrial dryer with the function of air inlet preheating, which comprises an organic cabinet, an inner drum and an outer drum arranged inside the cabinet, a door panel part arranged at the front of the cabinet, and an air dryer arranged at the top of the cabinet. The heating guide part, the air heating guide part includes an air heater connected in sequence, a connecting air pipe, an exhaust fan and an air guide pipe; The heat component, the air inlet preheating component includes a preheating shell, an air waste heat exchanger arranged in the waste heat shell, an exhaust cavity for hot and humid air and an intake cavity for external air. The utility model uses the hot and humid air inside the cabinet to preheat the external ambient air, and at the same time uses the steam waste heat of the steam heater to preheat the first preheated air for the second time, and then heats it through the steam heater. It makes good use of the waste heat of hot and humid air and steam, has high heating efficiency, and is energy-saving and environmentally friendly.

Description

An industrial dryer with air inlet preheating function

technical field

The utility model relates to a dryer, which belongs to the technical field of industrial washing and drying equipment, in particular to an industrial dryer with the function of air inlet preheating.

Background technique

Industrial dryers are commonly used equipment in industrial washing and drying machinery. The general structure of the existing energy-saving dryers includes an organic cabinet, an inner drum and an outer drum installed inside the cabinet, a door panel assembly and settings on the front side of the cabinet. The hot air guide device on the top of the cabinet. In the existing hot air guiding device, a steam heater is generally used to heat the ambient air, and then the heated air is sent into the inner drum through the air guide pipe, and the heat-exchanged steam will be directly discharged from the steam heater. At present, this structure has serious energy loss. On the one hand, the hot and humid air in the dryer is directly discharged outside the dryer through the exhaust fan during the working process, and this part of the hot and humid air has a certain amount of waste heat and is directly discharged. Serious energy waste is caused; on the other hand, because the steam still has high waste heat after the first heat exchange, if it is directly discharged from the dryer without being used, a large amount of steam waste heat will be wasted, which is not conducive to environmental protection and energy saving.

Utility model content

The purpose of this utility model is to overcome the shortcomings and deficiencies in the prior art, and provide an industrial dryer with the function of air intake preheating, which uses the hot and humid air inside the cabinet to preheat the external ambient air, At the same time, the steam waste heat of the steam heater is used to preheat the air preheated for the first time, and then heated by the steam heater, which makes good use of the waste heat of the hot and humid air and steam, and has high heating efficiency and energy saving. Environmental friendly.

In order to achieve the above object, the utility model is realized according to the following technical solutions:

An industrial dryer with air inlet preheating function, comprising an organic cabinet, an inner drum and an outer drum arranged inside the cabinet, a door panel part arranged at the front of the cabinet, and an air heating guide part arranged at the top of the cabinet, The air heating guide part includes an air heater connected in sequence, a connecting air pipe, an exhaust fan and an air guide pipe; The air preheating component includes a preheating shell, an air waste heat exchanger arranged in the waste heat shell, an exhaust channel for hot and humid air, and an air intake channel for external air, wherein:

The above-mentioned air waste heat exchanger is integrally embedded in the preheating shell and is in close contact with the two side walls of the preheating shell, and a vertical partition is arranged in the middle, which divides the internal space of the air waste heat exchanger into U U-shaped structure air flow channel, the U-shaped structure air flow channel includes the first vertical air flow channel section and the second vertical air flow channel section and the bending flow channel section connecting the two, and the above-mentioned air waste heat heat exchanger is also set There are several horizontally arranged air heat exchange tubes, and each air heat exchange tube horizontally runs through the first vertical air flow channel section and the second vertical air flow channel section of the U-shaped structure air flow channel;

The hot and humid air exhaust cavity includes a hot and humid air intake section, a hot and humid air heat exchange section and an outlet section for hot and humid air. The interior of the heat exchange tube is connected to the hot and humid air inlet section and the hot and humid air outlet section, and the outlet of the hot and humid air outlet section communicates with the outside;

The above-mentioned external air intake cavity includes an upper intake cavity and a lower intake cavity. The upper intake cavity is a box structure, and its air inlet is located at the upper part of the front side plate of the preheating shell, and its air outlet It communicates with the first vertical channel section of the above-mentioned U-shaped structure air channel, and the lower air intake cavity is formed by the vertical gap between the vertical side wall of the hot and humid air intake section and the front side plate of the preheating shell. The inlet is located at the lower part of the front side plate of the preheating shell, and its air outlet communicates with the upper air intake cavity.

Further, the external air inlet channel has a pull-out filter panel, a part of the pull-out filter panel is located between the air outlet of the upper air intake channel and the first vertical channel section, and the other part is located at the upper inlet. Between the air cavity and the air outlet of the lower air intake cavity.

Further, the air heater of the air heating and guiding part adopts a steam heater; and the air intake preheating part also includes a steam waste heat exchanger located in the preheating shell, and the steam waste heat exchanger has a steam waste heat exchanger inside Coil, the steam inlet of the steam coil is connected with the steam outlet of the above steam heater, the steam outlet of the steam coil is connected with the external pipe through the steam trap, and the lower inlet of the gap space between the steam coil is connected with the above U-shaped structure The second vertical channel section of the air flow channel communicates, and the upper outlet of the gap space between the steam coils communicates with the air inlet on the side of the steam heater through the air guide hood on the top of the cabinet and with a pull-out mesh.

Further, a notch is formed at the position of the top plate of the connecting air duct of the air heating guide part, and a hinged wind baffle that just covers the notch is provided at the notch, and the articulated wind baffle is transmission-connected to a rotating drive structure, and is hinged The width of the type wind baffle is greater than or equal to the width of the connecting air duct.

Further, the side of the door panel assembly facing the inner drum is provided with an annular air supply ring at the peripheral position of the door cover of the door panel assembly, at least a part of the annular air supply ring is provided with an air outlet with the wind direction facing the center of the inner drum; Or the side of the door panel assembly facing the inner drum is provided with a bent air supply pipe at the upper edge of the door cover of the door panel assembly, and the air outlet of the bent air supply pipe is obliquely facing the center of the inner drum.

Further, the lower part of the door panel assembly is provided with a filter drawer, which communicates with the inside of the cabinet after assembly, and the side wall communicated with the hot and humid air intake section forms a leaky mesh structure.

Further, a first inspection door is provided at the middle of the front side plate of the preheating shell, and the vertical side wall of the hot and humid air intake section is respectively provided at the position corresponding to the air heat exchange tube and the position corresponding to the bending channel section There are a second inspection door and a third inspection door, the bent runner section is provided with a fourth inspection door corresponding to the third inspection door, and the side wall of the hot and humid air outlet section is provided with a position corresponding to the air heat exchange tube There is a fifth access door.

Further, the inside of the side wall of the preheating shell, the inner wall of the door panel assembly and the outer wall of the outer cylinder are respectively provided with insulation cotton; the front side plate of the preheating shell is provided with a detachable filter at the air inlet of the upper air intake cavity.

Further, the box structure of the upper air intake channel is provided with a wind guide inclined plate, the hot and humid air intake section has an "L" shape structure, and the upper end of the vertical side wall has a wind guide arc structure.

Further, the air heater of the air heating and guiding part adopts an electric heating pipe heater, and the electric heating pipe heater passes through the air guide hood with a pull-out leaking net on the top of the cabinet and the U-shaped structure air flow of the air inlet preheating part. The second vertical air channel section of the channel communicates.

Compared with the prior art, the utility model has the beneficial effects as follows:

The utility model uses the hot and humid air inside the cabinet to preheat the external ambient air for the first time, and then uses the steam waste heat of the steam heater to perform the second preheating on the air preheated for the first time, and then it is heated by steam The device is directly heated, thus making good use of the waste heat of hot and humid air and steam, which can improve the heating efficiency, and make full use of the waste heat energy, energy saving, high efficiency and environmental protection, effectively reducing the production cost of the enterprise and improving economic benefits.

In order to understand the utility model more clearly, the specific implementation of the utility model will be described below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a schematic front view of the exploded structure of Embodiment 1 of the utility model.

FIG. 2 is a schematic diagram of the rear structure of FIG. 1 .

Fig. 3 is a structural schematic diagram of the air inlet preheating component in Fig. 1 .

Fig. 4 is one of the schematic diagrams of the rear structure of the door panel assembly.

Fig. 5 is the second schematic diagram of the back structure of the door panel assembly.

Fig. 6 is a schematic structural view of the filter drawer in Fig. 1 .

Fig. 7 is a schematic structural view of the air inlet preheating component in Embodiment 2 of the present utility model.

Remarks: In Figure 1, the dotted arrows indicate the flow direction of hot and humid air, and the solid arrows indicate the flow direction of ambient air.

detailed description

Example 1

As shown in Figures 1 to 6, the industrial dryer with air inlet preheating function of the utility model includes an organic cabinet 1, an inner drum 21 and an outer cylinder 22 arranged inside the cabinet, and a door panel assembly 3 arranged at the front of the cabinet , the air heating guide part 4 arranged on the top of the cabinet, and the air inlet preheating part 5 arranged on the left part of the cabinet.

The above-mentioned air heating and guiding part 4 includes a steam heater 41 connected in sequence, a connecting air pipe 42, an exhaust fan 43 and an air guide pipe 44, wherein a gap is formed on the top plate of the connecting air pipe 42, and a gap is provided at the gap position to just block Notched hinged windshield 421, the hinged windshield 421 is transmission-connected with a rotating drive structure (not shown in the figure, an existing conventional rotating drive structure can be used), and the width of the hinged windshield 421 Greater than or equal to the width of the connecting duct 42.

The above-mentioned door panel assembly 3 is provided with an annular air supply ring 31 at the peripheral position of the door cover plate of the door panel assembly on the side facing the inner drum, and at least a part of the annular air supply ring 31 is provided with an air outlet hole ( As shown in Figure 4); or the side of the door panel assembly 3 facing the inner drum is provided with a bent air supply pipe 32 on the upper edge of the door cover of the door panel assembly, and the air outlet of the bent air supply pipe 32 is inclined toward the center of the inner drum (as shown in Figure 5).

The air intake preheating component 5 includes a preheating shell 51, an air waste heat exchanger 52 arranged in the waste heat shell, an exhaust channel for hot and humid air, and an air intake channel for external air, wherein:

The above-mentioned air waste heat exchanger 52 is integrally embedded in the preheating shell 51 and is in close contact with the two side walls of the preheating shell 51, and a vertical partition 521 is arranged in the middle, and the vertical partition 521 separates the air waste heat exchanger 52 The inner space of the U-shaped air channel is divided into a U-shaped structure air channel, which includes a first vertical air channel segment 522, a second vertical air channel segment 523 and a bent channel segment 524 connecting the two, And the above-mentioned air waste heat exchanger 52 is also provided with a number of horizontally arranged air heat exchange tubes 525, and each air heat exchange tube 525 horizontally runs through the first vertical air flow channel section 522 and the second vertical air channel section 522 of the U-shaped structure air channel. Vertical air flow channel section 523;

The hot and humid air exhaust channel includes a hot and humid air intake section 531, a heat exchange section for hot and humid air, and an outlet section 532 for hot and humid air. The hot and humid air heat exchange section is located inside the air heat exchange tube 525, and communicates with the hot and humid air inlet section 531 and the hot and humid air outlet section 532, and the air outlet of the hot and humid air outlet section 532 communicates with the outside;

The above-mentioned external air intake cavity includes an upper intake cavity 541 and a lower intake cavity 542. The upper intake cavity 541 is a box structure, and its air inlet is located at the upper part of the front side plate 511 of the preheating shell. , its air outlet communicates with the first vertical channel section 522 of the above-mentioned U-shaped structure air channel, and the lower air intake cavity channel 542 is formed between the vertical side wall of the hot and humid air intake section 531 and the front side plate 511 of the preheating shell Its air inlet is located at the lower part of the front side plate 511 of the preheating shell, and its air outlet communicates with the upper air inlet channel 541.

Preferably, the external air intake cavity has a pull-out filter panel 543, a part of the pull-out filter panel 543 is located between the air outlet of the upper intake cavity and the first vertical channel section, and the other A part is located between the air outlet of the upper air intake channel and the lower air intake channel.

Further, the air intake preheating component 5 also includes a steam waste heat exchanger 55 located in the preheating shell, and the steam waste heat exchanger 55 has a steam coil inside, and the steam inlet of the steam coil is connected with the above-mentioned steam heater. The steam outlet of 41 is connected, the steam outlet of the steam coil is connected to the external pipeline through the steam trap, and the lower inlet of the gap space between the steam coils communicates with the second vertical flow channel section 523 of the above-mentioned U-shaped structure air flow channel, The upper outlet of the interstitial space between the steam coils communicates with the air inlet on one side of the steam heater 41 through the air guide hood 46 on the top of the cabinet with a pull-out screen 45 .

Preferably, a filter drawer 6 is provided at the lower part of the door panel assembly 3 , the filter drawer 6 communicates with the inside of the cabinet after assembly, and the side wall communicated with the hot and humid air intake section forms a leaking mesh structure 61 .

Preferably, a first inspection door 5111 is provided in the middle of the front side plate 511 of the preheating shell, and the vertical side wall of the hot and humid air intake section corresponds to the position of the air heat exchange tube and the corresponding bending channel section The position of the second inspection door 5312 and the third inspection door 5313 are respectively provided, the bending channel section 524 is provided with the fourth inspection door 5241 corresponding to the third inspection door, and the side wall of the hot and humid air outlet section is provided with A fifth inspection door 5321 is provided at the position corresponding to the air heat exchange tube.

Preferably, the inside of the side wall of the preheating shell, the inner wall of the door panel assembly and the outer wall of the outer cylinder are respectively provided with insulation cotton; the front side plate of the preheating shell is provided with a removable filter at the air inlet of the upper air intake cavity 545.

Preferably, the box structure of the upper air intake channel 541 is provided with a wind guide inclined plate 544, and the hot and humid air intake section 531 is an "L"-shaped structure, and the upper end position of the vertical side wall 5311 is guided Wind arc structure.

The utility model has two working modes of hot air drying and cold air drying, and the specific working principle is as follows:

1. Hot air heating and drying method: the articulated wind baffle rotates upwards to cover the gap connecting the air duct. At this time, the steam heater communicates with the exhaust fan; after putting the clothes in the inner drum, the inner drum will rotate to dry the clothes Excess moisture, while the exhaust fan continuously sends heated air into the inner drum through the air duct to further dry the clothes; during the working process, the hot and humid air in the cabinet is sucked into the hot and humid air by another exhaust fan under the cabinet. At the same time, the ambient air coming in from the air inlet of the upper air intake cavity enters the gap between the air heat exchange tubes through the pull-out filter plate, The ambient air coming in from the air inlet of the lower air intake cavity rises along the gap space between the vertical side wall of the hot and humid air intake section and the front side plate of the preheating shell, and passes through the pull-out filter screen plate and then enters the upper part. The ambient air in the air cavity is mixed (the ambient air coming in from the air inlet of the lower air intake cavity will be heated by the heat radiated from the vertical side wall of the air intake section of the hot and humid air during the rising process), and then enters the air for heat exchange The gap between the tubes flows along the U-shaped structure air flow channel, so that it is preheated by the air heat exchange tube for the first time, and the air after the first preheating rises into the space between the steam coils of the steam waste heat exchanger In the gap, the high-temperature steam with waste heat delivered by the steam heater is passed into the steam coil, so that the air preheated for the first time is preheated for the second time, and then enters the steam heater for direct heating. Thermal heating and drying, energy saving and high efficiency.

2. Cold air drying method: the hinged wind baffle rotates downward to cover the pipe connecting the air duct. At this time, there is no communication between the steam heater and the exhaust fan, and the steam heater does not work. The gap is opened, and the cold air can enter the inner drum through the exhaust fan for cold air drying.

Example 2

As shown in Figure 7, the embodiment described in this embodiment is basically the same as that in Embodiment 1, the only difference being that the air heater of the air heating and conveying part in this embodiment adopts an electric heating tube heater, and there is no need to inject high-temperature steam. Therefore, there is no air inlet preheating component 5 and no steam waste heat exchanger is installed. The position where the steam heat exchanger is installed in Implementation 1 directly forms the air inlet channel 56. The electric heating tube heater is located on the top of the cabinet and has a pull-out The air guide hood and the air inlet channel 56 of the leaking mesh communicate with the second vertical air channel section of the U-shaped structure air channel of the air inlet preheating component. All the other implementations and modes of operation are the same as in Example 1.

The utility model is not limited to the above-mentioned embodiment, if the various changes or modifications of the utility model do not depart from the spirit and scope of the utility model, if these changes and modifications belong to the claims of the utility model and within the equivalent technical scope, Then the utility model is also intended to include these modifications and variations.

Claims (10)

1. An industrial dryer with the function of air inlet preheating, including an organic cabinet, an inner drum and an outer drum arranged in the cabinet, a door panel part arranged in the front of the cabinet, and an air heating guide arranged on the top of the cabinet The air heating and guiding part includes an air heater, a connecting air pipe, an exhaust fan and an air guide pipe connected in sequence, and it is characterized in that: the dryer also includes an air inlet arranged on the left part of the cabinet A preheating component, the air intake preheating component includes a preheating shell, an air waste heat exchanger arranged in the waste heat shell, a hot and humid air exhaust cavity and an external air intake cavity, wherein: The above-mentioned air waste heat exchanger is integrally embedded in the preheating shell and is in close contact with the two side walls of the preheating shell, and a vertical partition is arranged in the middle, which divides the internal space of the air waste heat exchanger into U U-shaped structure air flow channel, the U-shaped structure air flow channel includes the first vertical air flow channel section and the second vertical air flow channel section and the bending flow channel section connecting the two, and the above-mentioned air waste heat heat exchanger is also set There are several horizontally arranged air heat exchange tubes, and each air heat exchange tube horizontally runs through the first vertical air flow channel section and the second vertical air flow channel section of the U-shaped structure air flow channel; The hot and humid air exhaust cavity includes a hot and humid air intake section, a hot and humid air heat exchange section and an outlet section for hot and humid air. The interior of the heat exchange tube is connected to the hot and humid air inlet section and the hot and humid air outlet section, and the outlet of the hot and humid air outlet section communicates with the outside; The above-mentioned external air intake cavity includes an upper intake cavity and a lower intake cavity. The upper intake cavity is a box structure, and its air inlet is located at the upper part of the front side plate of the preheating shell, and its air outlet It communicates with the first vertical channel section of the above-mentioned U-shaped structure air channel, and the lower air intake cavity is formed by the vertical gap between the vertical side wall of the hot and humid air intake section and the front side plate of the preheating shell. The inlet is located at the lower part of the front side plate of the preheating shell, and its air outlet communicates with the upper air intake cavity. 2. An industrial dryer with air inlet preheating function according to claim 1, characterized in that: the external air intake cavity has a pull-out filter panel, the pull-out filter panel One part is located between the air outlet of the upper air intake channel and the first vertical flow channel segment, and the other part is located between the upper air intake channel and the air outlet of the lower air intake channel. 3. An industrial dryer with air inlet preheating function according to claim 1 or 2, characterized in that: the air heater of the air heating guide part adopts a steam heater; and the air inlet preheating function The thermal component also includes a steam waste heat exchanger located in the preheating shell. The steam waste heat exchanger has a steam coil inside, and the steam inlet of the steam coil is connected with the steam outlet of the above-mentioned steam heater. The steam of the steam coil The outlet is connected to the external pipe through the steam trap, and the lower inlet of the gap space between the steam coils communicates with the second vertical channel section of the U-shaped structure air flow channel, and the upper outlet of the gap space between the steam coils passes through The air guide hood with a pull-out drain screen located on the top of the cabinet communicates with the air inlet on one side of the above-mentioned steam heater. 4. An industrial dryer with air inlet preheating function according to claim 3, characterized in that: a gap is formed at the position of the top plate of the connecting air duct of the air heating guide part, and a gap is provided at the position of the gap to just cover it. A hinged wind baffle with notch, the hinged wind baffle is transmission connected with a rotating drive structure, and the width of the hinged wind baffle is greater than or equal to the width of the connecting air duct. 5. An industrial dryer with air inlet preheating function according to claim 3, characterized in that: the side of the door panel assembly facing the inner drum is provided with a ring-shaped feeder at the peripheral position of the door cover of the door panel assembly. A wind ring, at least a part of the annular air supply ring is provided with an air outlet hole with the wind direction facing the center of the inner drum; or the side of the door panel assembly facing the inner drum is provided with a bend at the upper edge of the door cover of the door panel assembly The air supply pipe, the air outlet of the bent air supply pipe is obliquely facing the center of the inner drum. 6. An industrial dryer with air inlet preheating function according to claim 5, characterized in that: the lower part of the door panel assembly is provided with a filter drawer, and the filter drawer communicates with the inside of the cabinet after assembly, and its The side wall communicating with the hot and humid air intake section forms a leaky mesh structure. 7. An industrial dryer with air inlet preheating function according to claim 3, characterized in that: a first inspection door is provided at the middle of the front side plate of the preheating shell, and the hot and humid air is taken in The vertical side wall of the section is provided with a second inspection door and a third inspection door at the position corresponding to the air heat exchange tube and the position corresponding to the bent runner section, and the bent runner section is provided with a door corresponding to the third inspection door. The fourth inspection door, and the fifth inspection door is provided at the position where the corresponding air heat exchange tube is arranged on the side wall of the hot and humid air outlet section. 8. An industrial dryer with air inlet preheating function according to claim 3, characterized in that: the inside of the side wall of the preheating shell, the inner wall of the door panel assembly and the outer wall of the outer cylinder are respectively provided with thermal insulation cotton; The front side plate of the preheating shell is provided with a detachable filter screen at the air inlet of the upper air intake cavity. 9. An industrial dryer with air inlet preheating function according to claim 3, characterized in that: the box structure of the upper air inlet channel is provided with a wind deflector sloping plate, and the hot and humid air enters The air section has an "L" shape structure, and the upper end of the vertical side wall has a wind guide arc structure. 10. An industrial dryer with air inlet preheating function according to claim 1 or 2, characterized in that: the air heater of the air heating guide part adopts an electric heating tube heater, and the electric heating tube heater The second vertical air channel section of the U-shaped structure air channel of the air intake preheating part is communicated with through the air guide hood with a pull-out filter on the top of the cabinet.