Drying system capable of returning air in middle and discharging air from top to bottom

Abstract

A middle air return and upper and lower air outlet drying system comprises a main case, a dust removal filter device, a precooler, a spray cleaning device, an upper heater, an upper cooler, an upper fan, a lower heater, a lower cooler and a lower fan. The main machine shell comprises an air return channel, an upper air outlet channel, a lower air outlet channel, a left spraying cleaning cavity, a right spraying cleaning cavity, an air return sub-channel, an upper heating cavity and a lower heating cavity, the dust removal filtering device is arranged in the air return sub-channel, and the precooler is arranged at the air outlet end and is opposite to the left spraying cleaning cavity and the right spraying cleaning cavity. The spraying and cleaning devices are arranged in the left spraying and cleaning cavity and the right spraying and cleaning cavity respectively; the upper cooler is arranged at the air inlet end of the upper heating cavity, the upper heater is provided with the air outlet end of the upper heating cavity, the lower cooler is arranged at the air inlet end of the lower heating cavity, the lower heater is arranged at the air inlet end of the lower heating cavity, and the upper fan and the lower fan are arranged in the upper air outlet channel and the lower air outlet channel respectively. And hot air in up-down convection is formed in the drying room and then returns from the middle part, so that the drying efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a drying system. Background Art

[0002] At present, the existing technology is Chinese patent 201921135464.8, and a heat pump drying system and a heat pump drying unit. The heat pump drying unit includes: a casing, including a first heat exchange chamber and a second heat exchange chamber; a dehumidification unit, including a compressor, a condenser and an internal evaporator connected end to end in sequence, the compressor is used to compress the refrigerant, the condenser is arranged in the first heat exchange chamber corresponding to the air supply port, and heats the air flowing to the air supply port; the internal evaporator is arranged in the first heat exchange chamber corresponding to the return air port, and condenses and dehumidifies the high-humidity air flowing from the return air port to the air supply port; and a dehumidification unit is arranged in the second heat exchange chamber and drives the outside air to flow into the air supply port after being heated by the condenser, and allows the dehumidification port to be selectively connected to the air outlet of the drying room. The above-mentioned heat pump drying unit combines a dehumidification unit with a closed-loop dehumidification cycle and a dehumidification unit with an open-loop dehumidification cycle. The two can be combined with dehumidification to ensure the dehumidification capacity of the heat pump drying unit, prevent the humidity in the drying room from being too high and affecting the time and quality of drying, and improve the drying effect. The problem is that there is only one hot air outlet and the hot air returning cannot be cleaned. Utility Model Content

[0003] The utility model aims to provide a middle return air and upper and lower air outlet drying system, which has the characteristics of washing closed-loop circulating air and having upper and lower air outlets.

[0004] The utility model is realized as follows: an intermediate return air upper and lower air outlet drying system, which is special in that it includes a main housing, a dust removal and filtering device, a precooler, a spray cleaning device, an upper heater, an upper cooler, an upper fan, a lower heater, a lower cooler and a lower fan,

[0005] The main housing includes a return air channel located in the center, an upper air outlet channel, a lower air outlet channel, a left spray cleaning chamber, a right spray cleaning chamber, a sub-return air channel, an upper heating chamber and a lower heating chamber, wherein the upper air outlet channel, the return air channel and the lower air outlet channel are arranged from top to bottom, and the upper heating chamber, the sub-return air channel and the lower heating chamber are respectively arranged on both sides of the return air channel and are respectively connected to the left spray cleaning chamber and the right spray cleaning chamber;

[0006] The dust removal and filtering device is arranged at the air inlet end of the sub-return air channel, the precooler is arranged at the air outlet end and is opposite to the left spray cleaning chamber and the right spray cleaning chamber, and the spray cleaning devices are respectively arranged on the inner surfaces of the outer wall panels of the left spray cleaning chamber and the right spray cleaning chamber; the upper cooler is arranged at the air inlet end of the upper heating chamber, and the upper heater is arranged at the air outlet end of the upper heating chamber, the lower cooler is arranged at the air inlet end of the lower heating chamber, and the lower heater is arranged at the air inlet end of the lower heating chamber, and the upper fan and the lower fan are respectively arranged in the upper air outlet channel and the lower air outlet channel.

[0007] The special feature of the intermediate return air and upper and lower air outlet drying system is that a water collecting trough is provided on the bottom plate of the left spray cleaning chamber and the right spray cleaning chamber, a drain pipe is provided on the bottom plate of the water collecting trough, and an electric drain valve is provided on the drain pipe.

[0008] The intermediate return air and upper and lower air outlet drying system is special in that the spray cleaning device is respectively opposite to the upper cooler and the lower cooler.

[0009] The above-mentioned intermediate return air and upper and lower air outlet drying system is special in that it also includes a heat pump host,

[0010] The precooler, the upper cooler and the lower cooler are connected in series to form an evaporator of the heat pump host, and the upper heater and the lower heater are connected in series to form a condenser of the heat pump host.

[0011] The above-mentioned intermediate return air and upper and lower air outlet drying system is special in that: the upper heater and the lower heater utilize industrial waste heat;

[0012] The precooler, the upper cooler and the lower cooler utilize the cold energy of water.

[0013] The utility model discloses a drying system with middle return air and upper and lower air outlets. The upper and lower air outlet channels are arranged to form upper and lower convection hot air in the drying room, and then the air is returned from the middle, thereby improving the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a left view of the utility model.

[0015] Figure 2 yes Figure 1 A-A view. DETAILED DESCRIPTION

[0016] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] like Figure 1 As shown, an intermediate return air upper and lower air outlet drying system includes a main housing 1, a dust removal filter device 2, a precooler 3, a spray cleaning device 4, an upper heater 51, an upper cooler 61, an upper fan 71, a lower heater 52, a lower cooler 62 and a lower fan 72.

[0019] The main housing 1 includes a return air channel 11, an upper air outlet channel 12, a lower air outlet channel 13, a left spray cleaning chamber 141, a right spray cleaning chamber 142, a sub-return air channel 111, an upper heating chamber 151 and a lower heating chamber 152 located in the center. The upper air outlet channel 12, the return air channel 11 and the lower air outlet channel 13 are arranged from top to bottom and located in the middle of the left and right directions. The upper heating chamber 151, the sub-return air channel 111 and the lower heating chamber 152 are respectively arranged on both sides of the return air channel 11 and are respectively connected to the left spray cleaning chamber 141 and the right spray cleaning chamber 142; the upper heating chamber 151, the sub-return air channel 111 and the lower heating chamber 152 are arranged from top to bottom; the sub-return air channel 111 and the lower heating chamber 152 are respectively arranged on both sides;

[0020] The dust removal and filtering device 2 is arranged at the air inlet end of the sub-return air channel 111, the precooler 3 is arranged at the air outlet end and is respectively opposite to the left spray cleaning chamber 141 and the right spray cleaning chamber 142, and the spray cleaning device 4 is respectively arranged on the inner surface of the outer wall plate of the left spray cleaning chamber 141 and the right spray cleaning chamber 142; the upper cooler 61 is arranged at the air inlet end of the upper heating chamber 151, and the upper heater 51 is provided with the air outlet end of the upper heating chamber 151, the lower cooler 62 is arranged at the air inlet end of the lower heating chamber 152, and the lower heater 52 is arranged at the air inlet end of the lower heating chamber 152, and the upper fan 71 and the lower fan 72 are respectively arranged in the upper air outlet channel 12 and the lower air outlet channel 13.

[0021] The spray cleaning device 4 is used to clean the dust on the surface of the precooler 3, the upper cooler and the lower cooler to prevent the heat exchange effect from being reduced; at the same time, it reduces the dust from entering the drying room again; the spray cleaning device is controlled by the control device;

[0022] Secondary dehumidification is performed through the precooler 3, the upper cooler 61 and the lower cooler 62. The utility model has a closed-loop circulation of hot air;

[0023] The design of changing the upper and lower double-channel air duct to four-channel air duct reduces the pressure loss of the air duct, reduces the power of the fan, and reduces the noise of equipment operation.

[0024] The air duct design changes from double channels to four channels, and dehumidification and heating are distributed to multiple units to ensure the dehumidification and heating effects.

[0025] As a further improvement of the present invention: a water collecting trough is provided on the bottom plate of the left spray cleaning chamber 141 and the right spray cleaning chamber 142, a drain pipe is provided on the bottom plate of the water collecting trough, and an electric drain valve is provided on the drain pipe.

[0026] The spray cleaning device 4 is opposite to the upper cooler 61 and the lower cooler 62 respectively.

[0027] It also includes the heat pump host.

[0028] The precooler 3, the upper cooler 61 and the lower cooler 62 are connected in series to form an evaporator of the heat pump host, and the upper heater 51 and the lower heater 52 are connected in series to form a condenser of the heat pump host.

[0029] The utility model can also be implemented as follows: the upper heater and the lower heater utilize industrial waste heat;

[0030] The precooler, the upper cooler and the lower cooler utilize the cold energy of water.

[0031] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A drying system with middle return air and upper and lower air outlets, characterized in that: It includes a main housing, a dust removal and filtering device, a precooler, a spray cleaning device, an upper heater, an upper cooler, an upper fan, a lower heater, a lower cooler and a lower fan. The main housing includes a return air channel located in the center, an upper air outlet channel, a lower air outlet channel, a left spray cleaning chamber, a right spray cleaning chamber, a sub-return air channel, an upper heating chamber and a lower heating chamber, wherein the upper air outlet channel, the return air channel and the lower air outlet channel are arranged from top to bottom, and the upper heating chamber, the sub-return air channel and the lower heating chamber are respectively arranged on both sides of the return air channel and are respectively connected to the left spray cleaning chamber and the right spray cleaning chamber; The dust removal and filtering device is arranged at the air inlet end of the sub-return air channel, the precooler is arranged at the air outlet end and is opposite to the left spray cleaning chamber and the right spray cleaning chamber, and the spray cleaning devices are arranged on the inner surface of the outer wall plate of the left spray cleaning chamber and the right spray cleaning chamber respectively; The upper cooler is arranged at the air inlet end of the upper heating chamber, and the upper heater is arranged at the air outlet end of the upper heating chamber. The lower cooler is arranged at the air inlet end of the lower heating chamber, and the lower heater is arranged at the air inlet end of the lower heating chamber. The upper fan and the lower fan are respectively arranged in the upper air outlet channel and the lower air outlet channel.

2. The middle return air and upper and lower air outlet drying system according to claim 1 is characterized in that: A water collecting trough is arranged on the bottom plate of the left spray cleaning chamber and the right spray cleaning chamber, a drain pipe is arranged on the bottom plate of the water collecting trough, and an electric drain valve is arranged on the drain pipe.

3. The middle return air and upper and lower air outlet drying system according to claim 1 is characterized in that: The spray cleaning device is respectively opposite to the precooler, the upper cooler and the lower cooler.

4. The middle return air and upper and lower air outlet drying system according to claim 1, 2 or 3, characterized in that: It also includes the heat pump host. The precooler, the upper cooler and the lower cooler are connected in series to form an evaporator of the heat pump host, and the upper heater and the lower heater are connected in series to form a condenser of the heat pump host.

5. The middle return air and upper and lower air outlet drying system according to claim 1, 2 or 3, characterized in that: The upper heater and the lower heater utilize industrial waste heat; The precooler, the upper cooler and the lower cooler utilize the cold energy of water.

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