Double-fan structure for dryer

Abstract

The utility model discloses a double-fan structure for a dryer. The double-fan structure comprises a double-volute assembly, a left-handed impeller assembly, a right-handed impeller assembly and a current collector. The double-volute assembly is of an 8-shaped box structure which is horizontally and transversely arranged, a left-rotating impeller assembly is further vertically and coaxially arranged on the upper surface of the double-volute assembly relative to the left half portion of the double-volute assembly, and a right-rotating impeller assembly is further vertically and coaxially arranged on the upper surface of the double-volute assembly relative to the right half portion of the double-volute assembly. The output end of the left-handed impeller assembly and the output end of the right-handed impeller assembly vertically extend downwards into the double-volute assembly. Current collectors are coaxially embedded into the lower surface of the double-volute assembly relative to the left half part and the right half part of the double-volute assembly respectively, and the double-volute assembly is mounted at the top of a rack of the dryer through the current collectors; an air outlet is formed in the middle of the front surface of the double-volute assembly, and the double-volute assembly communicates with a circulating air duct of the dryer through the air outlet. According to the utility model, the energy consumption is reduced while the drying efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial drying equipment technical field, concretely relates to a double fan structure for drying machine. BACKGROUND

[0002] The through type drying machine is a drying machine with high automation degree and applied in large-scale industrial washing field, which heats air through a heater and uses a circulating fan to send the hot air into a drying cavity to dry the linen.

[0003] However, the traditional through type drying machine usually adopts a single fan structure, which is driven by a single fan to circulate hot air, thus having the following defects: 1) limited by the power consumption and installation space requirement of the equipment, the motor power and impeller size of the single fan structure are affected, so the air volume of the single fan structure is limited, resulting in low heat exchange efficiency and long drying time; 2) the single fan structure also causes uneven air distribution inside the drying machine, thus easily causing the phenomenon of local over-drying or incomplete drying of the linen; 3) long time high load operation of the single fan also affects the service life of the equipment and increases the energy consumption. Therefore, the above problems need to be solved. SUMMARY

[0004] The utility model solves the technical problem to provide a double fan structure for drying machine, compact structure, can optimize the gas circulation effect to the greatest extent, and reduces the energy consumption while improving the drying efficiency.

[0005] To solve the above technical problems, the utility model takes the following technical scheme: the utility model discloses a double fan structure for drying machine, and the innovation point lies in that: including double volute assembly, left-handed impeller assembly, right-handed impeller assembly and current collector, the double volute assembly is horizontally transversely arranged 8-shaped box structure, and the left-handed impeller assembly and the right-handed impeller assembly are vertically symmetrically arranged on the upper surface of the double volute assembly, the left-handed impeller assembly is coaxially arranged with the left half of the double volute assembly, and the output end of the left-handed impeller assembly is vertically and perpendicularly extended to the inside of the double volute assembly, the right-handed impeller assembly is coaxially arranged with the right half of the double volute assembly, and the output end of the right-handed impeller assembly is vertically and perpendicularly extended to the inside of the double volute assembly, the current collector is horizontally embedded and communicated coaxially on the lower surface of the double volute assembly relative to the left half and the right half, the two current collectors are coaxially and spaced apart below the left-handed impeller assembly or the right-handed impeller assembly, and the double volute assembly is installed on the rack top of the drying machine through the current collector, the air outlet is vertically embedded and penetrated in the middle position of the front surface of the double volute assembly, and the double volute assembly is sealingly communicated with the circulating air duct of the drying machine through the air outlet.

[0006] Preferably, the left-rotating impeller assembly comprises the motor I, the heat dissipation plate I, the mounting plate I, the lug I and the left impeller; the mounting plate I is horizontally arranged in a circular structure, and its diameter is greater than the outer diameter of the left impeller; the motor I is vertically coaxially arranged above the mounting plate I, and the independent fan I is arranged at the tail of the motor I, thereby dissipating heat from the surface of the motor I through the independent fan I; the fixed end of the motor I is vertically coaxially arranged with the upper surface of the mounting plate I, and the annular heat dissipation plate I is coaxially sleeved between the two, and is clamped and fixed on the upper surface of the mounting plate I through screwing of the fixed end of the motor I and the upper surface of the mounting plate I; a plurality of heat dissipation holes I are vertically embedded in the outer circumferential surface of the heat dissipation plate I along the circumferential direction, each of the heat dissipation holes I extends out of the inner circumferential surface of the heat dissipation plate I along the radial direction of the heat dissipation plate I, and the inner diameter of the heat dissipation plate I is greater than the diameter of the shaft head of the motor I; the shaft head of the motor I is designed to be elongated, and the shaft head vertically extends downward out of the lower surface of the mounting plate I, and is coaxially fixedly connected with the hub of the left impeller through a taper sleeve structure, thereby driving the left impeller to rotate horizontally around the shaft, and ensuring that the mounting plate I does not interfere with the horizontal rotation of the left impeller; the heat dissipation fan I is coaxially sleeved on the shaft head of the motor I relative to the inside of the heat dissipation plate I, and the operation of the heat dissipation fan I and the operation of the shaft head of the motor I do not interfere with each other, and the operation of the heat dissipation fan I does not interfere with the operation of the heat dissipation plate I, thereby dissipating heat from the front end of the motor I through the cooperation of the heat dissipation fan I and the heat dissipation holes I; the lug I is vertically and symmetrically arranged on the upper surface of the mounting plate I relative to the outside of the heat dissipation plate I, and the left-rotating impeller assembly is hoisted through the lug I.

[0007] Preferably, the right-rotating impeller assembly comprises motor II, heat sink II, mounting plate II, lug II and right impeller; the mounting plate II is horizontally arranged in a circular structure, and its diameter is larger than the outer diameter of the right impeller; the right impeller has the same size as the left impeller, and the blade rotation direction of the right impeller is opposite to that of the left impeller; the motor II is vertically coaxially arranged above the mounting plate II, and the independent fan II is arranged at the tail of the motor II, thereby cooling the surface of the motor II through the independent fan II; the fixed end of the motor II is arranged vertically and coaxially with the upper surface of the mounting plate II, and the annular heat sink II is coaxially sleeved between the two, and the heat sink II is clamped and fixed on the upper surface of the mounting plate II through screwing of the fixed end of the motor II and the upper surface of the mounting plate II; a plurality of heat dissipation holes II are vertically embedded in the outer circumferential surface of the heat sink II along the circumferential direction, each of the heat dissipation holes II extends out of the inner circumferential surface of the heat sink II along the radial direction of the heat sink II, and the inner diameter of the heat sink II is larger than the diameter of the shaft head of the motor II; the shaft head of the motor II is designed to be elongated, and the shaft head vertically extends downward and coaxially out of the lower surface of the mounting plate II, and is fixedly connected with the hub of the right impeller through a taper sleeve structure, thereby driving the right impeller to rotate horizontally around the shaft of the motor II, and ensuring that the mounting plate II does not interfere with the horizontal rotation of the right impeller; the heat dissipation fan II is coaxially sleeved on the shaft head of the motor II relative to the inside of the heat sink II, and the operation of the heat dissipation fan II and the shaft head of the motor II does not interfere with each other, and the operation of the heat dissipation fan II does not interfere with the operation of the heat sink II, thereby cooling the front end of the motor II through the cooperation of the heat dissipation fan II and the heat dissipation hole II; the lugs II are vertically and symmetrically arranged on the upper surface of the mounting plate II relative to the outside of the heat sink II, and the right-rotating impeller assembly is hoisted through the lugs II.

[0008] Preferably, the double volute assembly comprises a double volute top plate, a double volute bottom plate, a left volute plate, a right volute plate and an air outlet pipe; the double volute top plate and the double volute bottom plate are both horizontally transversely arranged 8-shaped plates, and are vertically spaced and aligned; the distance between the double volute top plate and the double volute bottom plate needs to be greater than the height of the left impeller; the left half of the double volute top plate and the double volute bottom plate is coaxially sleeved with the left volute plate matched therewith; the left volute plate is an arc-shaped structure, and its upper and lower end faces are integrally formed with the corresponding positions of the lower surface of the double volute top plate and the upper surface of the double volute bottom plate; the right half of the double volute top plate and the double volute bottom plate is coaxially sleeved with the right volute plate matched therewith; the right volute plate is an arc-shaped structure, and its upper and lower end faces are integrally formed with the corresponding positions of the lower surface of the double volute top plate and the upper surface of the double volute bottom plate, and cooperates with the left volute plate to form an 8-shaped hollow region; a hollow cuboid-shaped air outlet pipe is horizontally and longitudinally arranged between the left volute plate and the right volute plate relative to the front side of the two plates; the rear end of the air outlet pipe is open, and is integrally formed with the left volute plate and the right volute plate, and is in sealed communication with the 8-shaped hollow region; the upper surface of the air outlet pipe is flush with the upper surface of the double volute top plate, and the lower surface of the air outlet pipe is flush with the lower surface of the double volute bottom plate, and the air outlet is vertically embedded on the front end surface of the air outlet pipe, thereby sealingly screwing the front end surface of the air outlet pipe with the circulating air duct of the dryer, sealingly connecting the double volute assembly with the circulating air duct of the dryer; a partition plate is vertically and longitudinally arranged between the left volute plate and the right volute plate; the upper and lower ends of the partition plate are fixedly connected with the corresponding positions of the lower surface of the double volute top plate and the upper surface of the double volute bottom plate, the rear end of the partition plate is fixedly connected with the rear side junction of the left volute plate and the right volute plate, and the front end of the partition plate extends to the front end surface of the air outlet pipe, thereby dividing the 8-shaped hollow region into two parts by the partition plate.

[0009] Preferably, a circular mounting hole I is vertically embedded and penetrates through the upper surface of the double volute top plate relative to the left half thereof; the diameter of the mounting hole I is smaller than the diameter of the mounting plate I, and is greater than the outer diameter of the left impeller; the left impeller of the left-rotating impeller assembly is coaxially inserted into the left half of the double volute assembly through the mounting hole I, and the mounting plate I is screw-fixed with the corresponding position of the upper surface of the double volute top plate, thereby ensuring that the double volute assembly does not interfere with the horizontal rotation of the left impeller.

[0010] Preferably, a circular mounting hole II is coaxially and vertically embedded in the upper surface of the double volute top plate relative to the right half portion, and the center distance between the mounting hole II and the mounting hole I is 990mm; the diameter of the mounting hole II is smaller than the diameter of the mounting plate II and larger than the outer diameter of the right impeller, the right impeller of the right impeller assembly is coaxially inserted into the right half portion of the double volute assembly through the mounting hole II, and the mounting plate II is screw-fixed with the corresponding position of the upper surface of the double volute top plate, and the double volute assembly does not interfere with the horizontal rotation of the right impeller.

[0011] Preferably, the left observation and maintenance window and the right observation and maintenance window are further provided; a mounting hole III matching the left observation and maintenance window is coaxially and vertically embedded in the left side surface of the left volute plate along the arc direction, and the left observation and maintenance window is screw-fixed on the left volute plate through the mounting hole III, so that the left half portion of the double volute assembly can be maintained through the left observation and maintenance window; a mounting hole IV matching the right observation and maintenance window is coaxially and vertically embedded in the right side surface of the right volute plate along the arc direction, and the right observation and maintenance window is screw-fixed on the right volute plate through the mounting hole IV, so that the right half portion of the double volute assembly can be maintained through the right observation and maintenance window; graphite gaskets matching the left observation and maintenance window and the right observation and maintenance window are further provided between the left observation and maintenance window and the left volute plate and between the right observation and maintenance window and the right volute plate respectively, and the sealing property is ensured through the graphite gaskets.

[0012] Preferably, each of the collectors is a funnel-shaped structure arranged horizontally, and the outer circumferential surface is arc-shaped; the upper end of each of the collectors has a smaller diameter than the lower end, and the upper end is vertically upwardly flanged, and the lower end is horizontally outwardly flanged; mounting holes V matching the collectors are coaxially and vertically embedded in the lower surface of the double volute bottom plate and symmetrically arranged at intervals, and the mounting hole V on the left side is coaxially arranged with the air inlet of the left impeller, and the mounting hole V on the right side is coaxially arranged with the air inlet of the right impeller; each of the collectors is coaxially sleeved in the corresponding mounting hole V, and the upper end of each of the collectors is arranged in the double volute assembly and does not interfere with the left impeller assembly and the right impeller assembly; each of the collectors is screw-fixed with the corresponding position of the double volute bottom plate, and the double volute assembly is screw-fixed on the rack top of the dryer through the collectors.

[0013] The utility model discloses the beneficial effects of the following:

[0014] (1) the utility model discloses compact structure can optimize gas circulation effect to the maximum extent, and reduce energy consumption while improving drying efficiency;

[0015] (2) The utility model discloses adopt the cooperation of left impeller and right impeller, reduce the mutual interference of double fan flow field to the maximum extent while saving the installation space, reduce the air volume loss, improve the drying efficiency;

[0016] (3) The utility model discloses arrange double fan in the depth direction of dryer and simultaneously suction, make the gas of each place in the depth direction of dryer distribute evenly, improve the drying effect of linen, solve the problem that the part linen cannot be dried synchronously due to single fan drying, improve the drying efficiency;

[0017] (4) The utility model discloses the running state of double fan can be flexibly controlled according to the weight of linen and the temperature and humidity of exhaust air, and double fan can also be controlled individually, when the weight of linen is less, any single fan can be flexibly selected to run and dry, and the intermittent operation and the unfull load operation of double fan can reduce the noise, improve the running stability and service life of fan. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawing needed to be used in the embodiment, obviously, the drawing in the following description only is some embodiment in the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawing according to these drawings.

[0019] Figure 1 It is the structure schematic view of the double fan structure for the dryer of the utility model.

[0020] Figure 2 It is another view schematic view of the double fan structure for the dryer of the utility model.

[0021] Figure 3 It is the structure schematic view of the double volute assembly of the utility model.

[0022] Figure 4 It is the mechanism schematic view of the left-handed impeller assembly of the utility model.

[0023] Figure 5 It is the structure schematic view of the right-handed impeller assembly of the utility model.

[0024] Figure 6 It is the structure schematic view of the current collector of the utility model.

[0025] Figure 7 It is the schematic view of the double fan structure for the dryer of the utility model installed on the dryer.

[0026] Figure 8 It is the wind direction schematic view of the double fan structure for the dryer of the utility model when working.

[0027] Wherein, 1-double volute roof; 2-double volute bottom plate; 3-left volute plate; 4-right volute plate; 5-outlet pipe; 6-baffle; 7-left observation maintenance window; 8-motor I; 9-radiator I; 10-mounting plate I; 11-lifting lug I; 12-left impeller; 13-motor II; 14-radiator II; 15-mounting plate II; 16-lifting lug II; 17-right impeller; 18-collector; 19-rack; 20-circulating air duct; 21-heat exchanger; 22-right observation maintenance window. DETAILED DESCRIPTION

[0028] The technical scheme of the utility model will be described clearly and completely by specific embodiments.

[0029] The utility model discloses a double fan structure for dryer, including double volute subassembly, left screw impeller subassembly, right screw impeller subassembly and collector, specific structure as Figures 1-8 The double volute subassembly is horizontally transversely arranged 8-shaped box structure, and left screw impeller subassembly and right screw impeller subassembly are vertically symmetrically arranged on its upper surface, the left screw impeller subassembly is coaxially arranged with the left half of the double volute subassembly, and the output end of the left screw impeller subassembly vertically extends to the inside of the double volute subassembly, the right screw impeller subassembly is coaxially arranged with the right half of the double volute subassembly, and the output end of the right screw impeller subassembly vertically extends to the inside of the double volute subassembly, the collector 18 is coaxially horizontally embedded in the left half and the right half of the double volute subassembly respectively, the two collectors 18 are coaxially and separately arranged below the left screw impeller subassembly or the right screw impeller subassembly, and the double volute subassembly is installed on the top of the rack 19 of the dryer through the collector 18, the outlet is vertically embedded in the middle position of the front surface of the double volute subassembly, and the double volute subassembly is sealed and communicated with the circulating air duct 20 of the dryer through the outlet.

[0030] The left screw impeller subassembly includes motor I 8, radiator I 9, mounting plate I 10, lifting lug I 11 and left impeller 12, as Figures 1-8As shown, the mounting plate I 10 is a horizontally arranged circular structure, and its diameter is greater than the outer diameter of the left impeller 12; a motor I 8 is vertically coaxially arranged above the mounting plate I 10, and an independent fan I is arranged at the tail of the motor I 8, thereby cooling the surface shell of the motor I 8 through the independent fan I; the fixed end of the motor I 8 is arranged in a vertically spaced coaxial manner on the upper surface of the mounting plate I 10, a circular heat sink I 9 is coaxially sleeved between the two, and the heat sink I 9 is clamped and fixed on the upper surface of the mounting plate I 10 through the screw connection between the fixed end of the motor I 8 and the upper surface of the mounting plate I 10; a plurality of heat dissipation holes I are vertically embedded on the outer circumferential surface of the heat sink I 9 along the circumferential direction, each heat dissipation hole I extends out of the inner circumferential surface of the heat sink I 9 along the radial direction of the heat sink I 9, and the inner diameter of the heat sink I 9 is greater than the diameter of the shaft head of the motor I 8;

[0031] As shown in the figure, Figures 1-8 The shaft head of the motor I 8 is designed to be lengthened, and the shaft head vertically extends downward out of the lower surface of the mounting plate I 10 in a coaxial manner, and is fixedly connected to the hub of the left impeller 12 in a coaxial manner through a taper sleeve structure, thereby driving the left impeller 12 to rotate horizontally around the shaft in a coaxial manner, and ensuring that the mounting plate I 10 does not interfere with the horizontal rotation of the left impeller 12; a heat dissipation fan I is coaxially sleeved on the shaft head of the motor I 8 relative to the inside of the heat sink I 9, and the operation of the heat dissipation fan I and the operation of the shaft head of the motor I 8 do not interfere with each other, and the operation of the heat dissipation fan I does not interfere with the operation of the heat sink I 9, thereby cooling the front end of the motor I 8 through the cooperation of the heat dissipation fan I and the heat dissipation hole I; the lug I 11 is vertically and symmetrically arranged on the upper surface of the mounting plate I 10 relative to the outside of the heat sink I 9, and the left-handed impeller assembly is hoisted through the lug I 11.

[0032] The utility model discloses a right-handed impeller assembly, which comprises a motor II 13, a heat sink II 14, a mounting plate II 15, a lug II 16 and a right-handed impeller 17; as shown in the figure, Figures 1-8As shown, the mounting plate II 15 is a horizontally arranged circular structure, and its diameter is larger than the outer diameter of the right impeller 17, the right impeller 17 is the same size as the left impeller 12, and the blade rotation direction of the right impeller 17 is opposite to that of the left impeller 12; A motor II 13 is vertically coaxially arranged above the mounting plate II 15, and an independent fan II is arranged at the tail of the motor II 13, so as to cool the surface shell of the motor II 13 through the independent fan II; The fixed end of the motor II 13 is arranged in a coaxial manner with the upper surface of the mounting plate II 15, a circular heat sink plate II 14 is coaxially sleeved between the two, and the heat sink plate II 14 is clamped and fixed on the upper surface of the mounting plate II 15 through the fixed end of the motor II 13 and the screw connection of the upper surface of the mounting plate II 15; A plurality of heat dissipation holes II are vertically embedded on the outer circumferential surface of the heat sink plate II 14 along the circumferential direction, each heat dissipation hole II extends out of the inner circumferential surface of the heat sink plate II 14 along the radial direction of the heat sink plate II 14, and the inner diameter of the heat sink plate II 14 is greater than the diameter of the shaft head of the motor II 13;

[0033] As shown in the figure, Figures 1-8 The shaft head of the motor II 13 is designed to be lengthened, and the shaft head extends vertically downward out of the lower surface of the mounting plate II 15 in a coaxial manner, and is fixedly connected to the hub of the right impeller 17 in a coaxial manner through a conical sleeve structure, so as to drive the right impeller 17 to rotate horizontally around the shaft in a coaxial manner, and ensure that the mounting plate II 15 does not interfere with the horizontal rotation of the right impeller 17; A cooling fan II is coaxially sleeved on the shaft head of the motor II 13 relative to the inside of the heat sink plate II 14, and the operation of the cooling fan II and the shaft head of the motor II 13 does not interfere with each other, and the operation of the cooling fan II does not interfere with the operation of the heat sink plate II 14, so as to cool the front end of the motor II 13 through the cooperation of the cooling fan II and the heat dissipation hole II; The lug II 16 is vertically and symmetrically arranged on the upper surface of the mounting plate II 15 relative to the outside of the heat sink plate II 14, and the right-handed impeller assembly is hoisted through the lug II 16.

[0034] The utility model discloses a double volute assembly, which comprises a double volute top plate 1, a double volute bottom plate 2, a left volute plate 3, a right volute plate 4 and an air outlet pipe 5. Figures 1-8As shown, the double volute top plate 1 and the double volute bottom plate 2 are both horizontally transversely arranged 8-shaped plates, and are arranged in vertical alignment, and the spacing between the double volute top plate 1 and the double volute bottom plate 2 needs to be greater than the height of the left impeller 12; the left half of the double volute top plate 1 and the double volute bottom plate 2 is coaxially sleeved with a left volute plate 3 matched therewith, the left volute plate 3 is an arc-shaped structure, and the upper and lower end faces thereof are integrally formed with the corresponding positions of the lower surface of the double volute top plate 1 and the upper surface of the double volute bottom plate 2; the right half of the double volute top plate 1 and the double volute bottom plate 2 is coaxially sleeved with a right volute plate 4 matched therewith, the right volute plate 4 is an arc-shaped structure, and the upper and lower end faces thereof are integrally formed with the corresponding positions of the lower surface of the double volute top plate 1 and the upper surface of the double volute bottom plate 2, and cooperates with the left volute plate 3 to enclose an 8-shaped hollow region;

[0035] As shown in Figures 1-8 , a hollow cuboid-shaped air outlet pipe 5 is horizontally longitudinally arranged between the left volute plate 3 and the right volute plate 4 relative to the front sides thereof, the rear end of the air outlet pipe 5 is open, and is integrally formed with the left volute plate 3 and the right volute plate 4, and is in sealed communication with the 8-shaped hollow region; the upper surface of the air outlet pipe 5 is flush with the upper surface of the double volute top plate 1, and the lower surface thereof is flush with the lower surface of the double volute bottom plate 2, and the air outlet is vertically embedded on the front end face of the air outlet pipe 5, and then the front end face of the air outlet pipe 5 is sealingly screwed with the circulating air duct 20 of the dryer, so that the double volute assembly is in sealed communication with the circulating air duct 20 of the dryer; a partition plate 6 is vertically longitudinally arranged between the left volute plate 3 and the right volute plate 4, the upper and lower ends of the partition plate 6 are fixedly connected with the corresponding positions of the lower surface of the double volute top plate 1 and the upper surface of the double volute bottom plate 2, and the rear end thereof is fixedly connected with the rear side junctions of the left volute plate 3 and the right volute plate 4, and the front end thereof extends to the front end face of the air outlet pipe 5, so that the 8-shaped hollow region is divided into two parts by the partition plate 6.

[0036] As shown in Figures 1-8 , a circular mounting hole I is coaxially vertically embedded through the upper surface of the double volute top plate 1 relative to the left half thereof, the diameter of the mounting hole I is smaller than the diameter of the mounting plate I 10 and greater than the outer diameter of the left impeller 12, and the left impeller 12 of the left-handed impeller assembly is coaxially inserted into the left half of the double volute assembly through the mounting hole I, and the mounting plate I 10 is screw-fixed with the corresponding position of the upper surface of the double volute top plate 1, and ensures that the horizontal rotation of the double volute assembly does not interfere with the left impeller 12.

[0037] As shown in Figures 1-8As shown, a circular mounting hole II is coaxially and vertically embedded in the upper surface of the double volute top plate 1 relative to its right half, and the center distance between mounting hole II and mounting hole I is 990mm. The diameter of mounting hole II is smaller than the diameter of mounting plate II 15 and larger than the outer diameter of right impeller 17. The right impeller 17 of the right-hand impeller assembly is inserted into the right half of the double volute assembly through mounting hole II, and its mounting plate II 15 is screwed and fixed to the upper surface of the double volute top plate 1 at the corresponding position, ensuring that the double volute assembly does not interfere with the horizontal rotation of the right impeller 17.

[0038] like Figures 1-8 As shown, a mounting hole Ⅲ matching the left observation and maintenance window 7 is embedded through the left side of the left volute plate 3 along its curvature direction. The left observation and maintenance window 7 is screwed onto the left volute plate 3 through the mounting hole Ⅲ, allowing for inspection of the interior of the left half of the double volute assembly. A mounting hole Ⅳ matching the right observation and maintenance window 22 is embedded through the right side of the right volute plate 4 along its curvature direction. The right observation and maintenance window 22 is screwed onto the right volute plate 4 through the mounting hole Ⅳ, allowing for inspection of the interior of the right half of the double volute assembly. Matching graphite gaskets are also attached between the left observation and maintenance window 7 and the left volute plate 3, and between the right observation and maintenance window 22 and the right volute plate 4, ensuring a tight seal.

[0039] like Figures 1-8 As shown, each collector is a horizontally arranged funnel-shaped structure with an arc-shaped outer circumference. The upper diameter of each collector is smaller than its lower diameter, and the upper end is vertically turned upwards while the lower end is horizontally turned outwards. On the lower surface of the double volute base plate 2, there are symmetrically spaced vertically inserted mounting holes V that match the collectors. The mounting hole V on the left side is coaxial with the air inlet of the left impeller 12, and the mounting hole V on the right side is coaxial with the air inlet of the right impeller 17. Each collector is coaxially fitted into the corresponding mounting hole V, ensuring that its upper end is located inside the double volute assembly and is not interfered with by the left-hand impeller assembly and the right-hand impeller assembly, respectively. Each collector is screwed to the corresponding position of the double volute base plate 2, and the double volute assembly is screwed to the top of the dryer frame 19 through the collectors.

[0040] The working principle of this utility model is as follows: First, the dual fans are installed on the top of the dryer frame 19 through the collector 18, and the air outlet pipe 5 of the dual fans is screwed and fixed to the circulating air duct 20 of the dryer. During operation, the bottom of the dual fans simultaneously draws in air and discharges it simultaneously through the air outlet pipe 5. Some of the exhaust air and fresh air are drawn into the interior of the dryer, heated by the heat exchanger 21, and then enter the bottom drum of the dryer to mix with the wet linens to evaporate moisture. The humid air is then drawn away and discharged by the dual fans.

[0041] The utility model discloses the beneficial effect of:

[0042] (1) the utility model discloses compact structure can optimize gas circulation effect to the greatest extent, and reduce energy consumption while improving drying efficiency;

[0043] (2) the utility model discloses the cooperation of left impeller 12 and right impeller 17 is used, saves the installation space while, the mutual interference of double fan flow field is reduced to the greatest extent, reduces the air volume loss, improves drying efficiency;

[0044] (3) the utility model discloses the double fan arrangement in the depth direction of drying -machine simultaneously suction, makes the gas even distribution everywhere in the depth direction of drying -machine interior, improves the drying effect of linen, solved the problem that a part of linen can not be synchronized drying of single fan drying, improves drying efficiency;

[0045] (4) the utility model discloses the weight of linen and the temperature and humidity of exhaust air can control the running state of double fan flexibly, and double fan can also be controlled individually, when linen weight is less, can flexibly select any single fan operation drying; The intermittent operation and not full load operation of double fan can reduce noise, improve the running stability and service life of fan.

[0046] The above-described embodiments are merely preferred embodiments of the utility model for description, and do not limit the design concept and scope of the utility model, and various modifications and improvements of the technical scheme of the utility model made by ordinary engineering technicians in the art without departing from the design concept of the utility model shall fall within the protection scope of the utility model, and the technical content of the utility model claimed for protection has been all recorded in the technical requirements.

Claims

1. A dual fan structure for a dryer, characterized by: The application relates to a double-volute assembly, a left-rotating impeller assembly, a right-rotating impeller assembly and a collector; the double-volute assembly is an 8-shaped box structure arranged horizontally and transversely, and a left-rotating impeller assembly and a right-rotating impeller assembly are vertically and symmetrically arranged on the upper surface of the double-volute assembly; the left-rotating impeller assembly is coaxially arranged with the left half of the double-volute assembly, and the output end of the left-rotating impeller assembly vertically and perpendicularly extends into the double-volute assembly; the right-rotating impeller assembly is coaxially arranged with the right half of the double-volute assembly, and the output end of the right-rotating impeller assembly vertically and perpendicularly extends into the double-volute assembly; a collector is horizontally and coaxially embedded on the lower surface of the double-volute assembly relative to the left half and the right half of the double-volute assembly, and the two collectors are coaxially and spaced apart arranged below the left-rotating impeller assembly or the right-rotating impeller assembly, and the double-volute assembly is mounted on the top of the rack of a drying machine through the collectors; a air outlet is vertically embedded in the middle of the front surface of the double-volute assembly, and the double-volute assembly is sealingly communicated with the circulating air duct of the drying machine through the air outlet.

2. The dual-blower structure for a dryer according to claim 1, wherein: The left-rotating impeller assembly comprises a motor I, a heat sink I, a mounting plate I, a lifting lug I and a left impeller; the mounting plate I is a circular structure arranged horizontally, and the diameter of the mounting plate I is larger than the outer diameter of the left impeller; a motor I is vertically and coaxially arranged above the mounting plate I, and an independent fan I is arranged at the tail of the motor I, so that the surface shell of the motor I is cooled through the independent fan I; the fixed end of the motor I is vertically and coaxially arranged with the upper surface of the mounting plate I, a circular heat sink I is coaxially sleeved between the motor I and the mounting plate I, and the heat sink I is clamped and fixed on the upper surface of the mounting plate I through the screw connection between the fixed end of the motor I and the upper surface of the mounting plate I; a plurality of heat dissipation holes I are vertically and uniformly distributed on the outer circumferential surface of the heat sink I, each heat dissipation hole I extends radially out of the inner circumferential surface of the heat sink I, and the inner diameter of the heat sink I is larger than the diameter of the shaft head of the motor I; the shaft head of the motor I is lengthened, the shaft head of the motor I vertically and coaxially extends out of the lower surface of the mounting plate I, and the shaft head of the motor I is coaxially and fixedly connected with the hub of the left impeller through a taper sleeve structure, so that the left impeller is driven to rotate horizontally around the shaft of the motor I, and the mounting plate I does not interfere with the horizontal rotation of the left impeller; a heat dissipation fan I is coaxially sleeved on the shaft head of the motor I relative to the inside of the heat sink I, the heat dissipation fan I does not interfere with the operation of the shaft head of the motor I, the heat sink I does not interfere with the operation of the heat dissipation fan I, and the front end of the motor I is cooled through the cooperation of the heat dissipation fan I and the heat dissipation holes I; lifting lugs I are vertically and symmetrically arranged on the upper surface of the mounting plate I relative to the outside of the heat sink I, and the left-rotating impeller assembly is lifted through the lifting lugs I.

3. The dual-blower structure for a dryer according to claim 2, wherein: The right-rotating impeller assembly comprises a motor II, a heat dissipation plate II, a mounting plate II, a lifting lug II and a right impeller; the mounting plate II is horizontally arranged in a circular structure, and its diameter is larger than the outer diameter of the right impeller; the right impeller has the same size as the left impeller, and the blade rotation direction of the right impeller is opposite to that of the left impeller; the motor II is vertically coaxially arranged above the mounting plate II, and an independent fan II is arranged at the tail of the motor II, so as to dissipate heat from the surface of the motor II; the fixed end of the motor II is arranged vertically and coaxially with the upper surface of the mounting plate II, a circular heat dissipation plate II is coaxially arranged between the motor II and the mounting plate II, and the heat dissipation plate II is clamped and fixed on the upper surface of the mounting plate II through screwing of the motor II and the mounting plate II; a plurality of heat dissipation holes II are vertically and evenly arranged on the outer circumferential surface of the heat dissipation plate II, each heat dissipation hole II extends radially from the inner circumferential surface of the heat dissipation plate II, and the inner diameter of the heat dissipation plate II is larger than the diameter of the shaft head of the motor II; the shaft head of the motor II is designed to be elongated, and the shaft head vertically extends downward from the lower surface of the mounting plate II, and is coaxially fixedly connected with the hub of the right impeller through a taper sleeve structure, so as to drive the right impeller to rotate horizontally around the shaft of the motor II, and ensure that the mounting plate II does not interfere with the horizontal rotation of the right impeller; the heat dissipation fan II is coaxially arranged on the shaft head of the motor II relative to the inside of the heat dissipation plate II, and the operation of the heat dissipation fan II and the shaft head of the motor II does not interfere with each other, and the operation of the heat dissipation fan II does not interfere with the operation of the heat dissipation plate II, so as to dissipate heat from the front end of the motor II through the cooperation of the heat dissipation fan II and the heat dissipation hole II; the lifting lug II is vertically and symmetrically arranged on the upper surface of the mounting plate II relative to the outside of the heat dissipation plate II, and the right-rotating impeller assembly is lifted through the lifting lug II.

4. The dual-blower structure for a dryer according to claim 3, wherein: The double volute assembly comprises a double volute top plate, a double volute bottom plate, a left volute plate, a right volute plate and an air outlet pipe; the double volute top plate and the double volute bottom plate are both horizontally transversely arranged 8-shaped plates, and are vertically spaced and aligned; the spacing between the double volute top plate and the double volute bottom plate needs to be greater than the height of the left impeller; coaxially sleeved with the left half part of the double volute top plate and the double volute bottom plate is a left volute plate matched therewith, which is an arc-shaped structure, and the upper and lower end faces thereof are integrally formed with the corresponding positions of the lower surface of the double volute top plate and the upper surface of the double volute bottom plate; coaxially sleeved with the right half part of the double volute top plate and the double volute bottom plate is a right volute plate matched therewith, which is an arc-shaped structure, and the upper and lower end faces thereof are integrally formed with the corresponding positions of the lower surface of the double volute top plate and the upper surface of the double volute bottom plate, and cooperates with the left volute plate to form an 8-shaped hollow region; between the left volute plate and the right volute plate is horizontally longitudinally arranged a hollow cuboid-shaped air outlet pipe relative to the front side thereof, the rear end of the air outlet pipe is open, and is integrally formed with the left volute plate and the right volute plate, and is in sealed communication with the 8-shaped hollow region; the upper surface of the air outlet pipe is arranged flush with the upper surface of the double volute top plate, and the lower surface thereof is arranged flush with the lower surface of the double volute bottom plate, and an air outlet is vertically embedded on the front end surface of the air outlet pipe, thereby sealingly screwing the front end surface of the air outlet pipe with the circulating air duct of the dryer, sealingly connecting the double volute assembly with the circulating air duct of the dryer; between the left volute plate and the right volute plate is vertically longitudinally arranged a partition plate, the upper and lower ends of the partition plate are fixedly connected with the corresponding positions of the lower surface of the double volute top plate and the upper surface of the double volute bottom plate, the rear end thereof is fixedly connected with the rear side of the left volute plate and the right volute plate, and the front end thereof extends to the front end surface of the air outlet pipe, thereby dividing the 8-shaped hollow region into two parts by the partition plate.

5. The dual-blower structure for a dryer according to claim 4, wherein: On the upper surface of the double volute top plate is coaxially vertically embedded a circular mounting hole I relative to the left half part thereof, the diameter of the mounting hole I is smaller than the diameter of the mounting plate I, and is greater than the outer diameter of the left impeller, the left impeller of the left-rotating impeller assembly is coaxially inserted into the left half part of the double volute assembly through the mounting hole I, the mounting plate I is screw-fixed with the corresponding position of the upper surface of the double volute top plate, and ensures that the double volute assembly does not interfere with the horizontal rotation of the left impeller.

6. The dual-blower structure for a dryer according to claim 5, wherein: On the upper surface of the double volute top plate, a circular mounting hole II is coaxially and vertically embedded relative to the right half part, and the distance between the centers of the mounting hole II and the mounting hole I is 990 mm; the diameter of the mounting hole II is smaller than that of the mounting plate II and larger than the outer diameter of the right impeller, the right impeller of the right impeller assembly is coaxially inserted into the right half part of the double volute assembly through the mounting hole II, and the mounting plate II is screw-fixed with the corresponding position of the upper surface of the double volute top plate, so as to ensure that the double volute assembly does not interfere with the horizontal rotation of the right impeller.

7. The dual-blower structure for a dryer according to claim 4, wherein: The left and right observation and maintenance windows are also provided; a mounting hole III matching the left observation and maintenance window is coaxially and vertically embedded on the left side of the left volute plate along the arc direction, and the left observation and maintenance window is screw-fixed on the left volute plate through the mounting hole III, so as to maintain the left half part of the double volute assembly through the left observation and maintenance window; a mounting hole IV matching the right observation and maintenance window is coaxially and vertically embedded on the right side of the right volute plate along the arc direction, and the right observation and maintenance window is screw-fixed on the right volute plate through the mounting hole IV, so as to maintain the right half part of the double volute assembly through the right observation and maintenance window; graphite gaskets are respectively arranged between the left observation and maintenance window and the left volute plate and between the right observation and maintenance window and the right volute plate, so as to ensure the sealing.

8. The dual-blower structure for a dryer according to claim 6, wherein: Each of the current collectors is a funnel-shaped structure arranged horizontally, and the outer circumferential surface is arc-shaped; the upper end of each of the current collectors has a smaller diameter than the lower end, and the upper end is vertically upwardly flanged, and the lower end is outwardly horizontally flanged; a mounting hole V matching the current collector is coaxially and vertically embedded on the lower surface of the double volute bottom plate, and the mounting hole V on the left side is coaxially arranged with the air inlet of the left impeller, and the mounting hole V on the right side is coaxially arranged with the air inlet of the right impeller; each of the current collectors is coaxially sleeved in the corresponding mounting hole V, and the upper end is arranged in the double volute assembly and does not interfere with the left and right impeller assemblies; each of the current collectors is screw-fixed with the corresponding position of the double volute bottom plate, and the double volute assembly is screw-fixed on the top of the rack of the dryer through the current collectors.

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