CN115682227A - Ventilation equipment - Google Patents

Abstract

A ventilator which contributes to ensuring smooth flow of air flow in a heat exchanger and suppressing pressure loss in a fresh air flow path and an exhaust air flow path. The ventilation apparatus of the present invention includes: a shell with a fresh air channel and an exhaust channel; and the heat exchanger comprises a plurality of first cores which are alternately laminated through membranes and form a fresh air flow path and a plurality of second cores which form an exhaust air flow path, wherein the first cores comprise first frames, a plurality of first flow guide ribs which are arranged at intervals along a first direction are arranged in the first frames, the first direction is crossed with the direction of air flow flowing through the fresh air flow path and the laminating direction of the first cores and the second cores, the second cores comprise second frames, a plurality of second flow guide ribs which are arranged at intervals along a second direction are arranged in the second frames, the second direction is crossed with the direction of air flow flowing through the exhaust air flow path and the laminating direction and is crossed with the first direction, and the number of the first flow guide ribs in the unit length of the first direction is more than that of the second flow guide ribs in the unit length of the second direction.

Description

Ventilation equipment

Technical Field

The present invention relates to ventilation equipment.

Background

Conventionally, there is a ventilation apparatus including: the air conditioner comprises a shell, a fan and a fan, wherein the shell is provided with a fresh air inlet, an air supply outlet, an air return inlet and an air exhaust outlet, and a fresh air channel from the fresh air inlet to the air supply inlet and an air exhaust channel from the air return inlet to the air exhaust outlet are formed in the shell; and a heat exchanger provided in the casing and including a plurality of first cores and second cores alternately stacked with a film interposed therebetween, the first cores being formed with fresh air flow paths communicating with the fresh air duct, and the second cores being formed with exhaust air flow paths communicating with the exhaust air duct (patent document 1).

Patent document 1: chinese CN101680726A gazette

In the ventilation apparatus, the first core and the second core are made of corrugated paper, and therefore, the overall strength is low and the first core and the second core are easily deformed.

Disclosure of Invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide a ventilation device that helps ensure smooth flow of air in a heat exchanger and suppress pressure loss in a fresh air flow path and a discharged air flow path.

In order to achieve the above object, the present invention provides a ventilation apparatus comprising: the air conditioner comprises a shell, a fan and a fan, wherein the shell is provided with a fresh air inlet, an air supply outlet, an air return inlet and an air exhaust outlet, and a fresh air channel from the fresh air inlet to the air supply outlet and an air exhaust channel from the air return inlet to the air exhaust outlet are formed in the shell; and a heat exchanger disposed in the casing and including a plurality of first cores and a plurality of second cores alternately stacked with a membrane interposed therebetween, the first cores being formed with a fresh air flow path communicated with the fresh air flow path, the second cores being formed with an exhaust air flow path communicated with the exhaust air flow path, wherein the first cores include first frames in which a plurality of first guide ribs are disposed at intervals in a first direction, the first direction crossing a direction of an air flow flowing through the fresh air flow path and a stacking direction of the first cores and the second cores, the second cores include second frames in which a plurality of second guide ribs are disposed at intervals in a second direction, the second direction crossing the direction of the air flow flowing through the exhaust air flow path and the stacking direction and crossing the first direction, and the number of the first guide ribs included in a unit length in the first direction is greater than the number of the second guide ribs included in a unit length in the second direction.

According to the ventilation device, the first core comprises the first frame, the first frame is internally provided with the plurality of first flow guide ribs which are arranged at intervals along the first direction, the first direction is crossed with the direction of air flow flowing through the fresh air flow path and the stacking direction of the first core and the second core, the second core comprises the second frame, the second frame is internally provided with the plurality of second flow guide ribs which are arranged at intervals along the second direction, and the second direction is crossed with the direction of air flow flowing through the exhaust air flow path and the stacking direction, so that the deformation of the first core and the second core is easily inhibited, the air flow can be guided by the first flow guide ribs and the second flow guide ribs to smoothly flow in the fresh air flow path and the exhaust air flow path, and the pressure loss of the fresh air flow path and the exhaust air flow path is inhibited; furthermore, the arrangement direction of the first flow guide ribs, i.e., the first direction, is crossed with the arrangement direction of the second flow guide ribs, i.e., the second direction, i.e., the first flow guide ribs and the second flow guide ribs are arranged in a crossed manner, so that the membrane positioned between the first flow guide ribs and the second flow guide ribs is not easy to deform, and the number of the first flow guide ribs included in the unit length in the first direction is greater than the number of the second flow guide ribs included in the unit length in the second direction, therefore, the area of an effective heat exchange area formed by the area surrounded by the adjacent first flow guide ribs and the second flow guide ribs can be increased, meanwhile, the deformation of the membrane in the effective heat exchange area due to the unbalanced pressure on the two sides of the membrane can be avoided, the pressure loss of the fresh air flow path can be further suppressed, and meanwhile, the membrane arranged on the two sides of the second core can be supported by the second flow guide ribs, and the pressure loss increase on the air flow path due to the deformation of the membrane can be prevented.

In the ventilation device of the present invention, it is preferable that the plurality of first air guide ribs be arranged uniformly at a first pitch in the first direction, and the plurality of second air guide ribs be arranged uniformly at a second pitch smaller than the first pitch in the second direction.

According to the ventilation equipment, the first guide ribs are uniformly arranged at the first intervals in the first direction, and the second guide ribs are uniformly arranged at the second intervals smaller than the first intervals in the second direction, so that compared with the condition that the first guide ribs and the second guide ribs are non-uniformly arranged, the ventilation equipment is beneficial to simplifying the manufacturing process, is also beneficial to uniformly distributing air flow in the heat exchanger, and is further beneficial to improving the overall heat exchange performance of the heat exchanger.

In the ventilator according to the present invention, it is preferable that the first frame includes two first side portions opposed to each other in the direction of the airflow passing through the fresh air flow path, the first air guide rib is provided between the two first side portions so as to be inclined with respect to the first side portions, the second frame includes two second side portions opposed to each other in the direction of the airflow passing through the exhaust air flow path, and the second air guide rib is provided between the two second side portions so as to be inclined with respect to the second side portions.

According to the ventilation device of the present invention, the first frame includes two first side portions opposing each other in the direction of the air flow passing through the fresh air flow path, and the first guide rib is provided between the two first side portions in a manner inclined with respect to the first side portions, so that even if the first core needs to be provided in a state where the first side portion is not perpendicular to the line connecting the fresh air inlet and the air outlet, the angle formed by the first guide rib with respect to the line connecting the fresh air inlet and the air outlet is easily reduced, thereby suppressing a large change in the flow direction of the air flow flowing in the fresh air flow path, particularly the flow direction of the air flow before and after flowing into the first core, reducing the pressure loss in the air flow path, and further increasing the overall heat exchange effect; similarly, the second frame includes two second side portions opposite to each other in the direction of the air flow passing through the air exhaust channel, and the second air guide rib is disposed between the two second side portions in an inclined manner with respect to the second side portions, so that even if the second core body needs to be disposed in a state where the second side portions are not perpendicular to the line connecting the air return opening and the air exhaust opening, the angle formed by the second air guide rib with respect to the line connecting the air return opening and the air exhaust opening is easily reduced, thereby suppressing a large change in the flow direction of the air flow flowing through the air exhaust channel, particularly the flow direction of the air flow flowing into the front and rear of the second core body, reducing the pressure loss in the air flow channel, and further increasing the overall heat exchange effect.

In the ventilation apparatus of the present invention, it is preferable that the first air guide ribs are inclined at an angle in a range of 80 ° to 88 ° with respect to the first side, and the second air guide ribs are inclined at an angle in a range of 80 ° to 88 ° with respect to the second side.

According to the ventilation equipment, the inclination angle of the first flow guide rib relative to the first edge is in the range of 80-88 degrees, so that the change range of the flow direction of the air flow is easily reduced, and the inclination angle of the second flow guide rib relative to the second edge is in the range of 80-88 degrees, so that the pressure loss on the air flow path is reduced; moreover, as the first flow guide ribs and the second flow guide ribs are obliquely arranged, more first flow guide ribs and second flow guide ribs can be arranged in unit length, so that the strength of the core body is improved; moreover, the first flow guide ribs and the second flow guide ribs are obliquely arranged, so that the area of an effective heat exchange area is increased, and the overall heat exchange performance of the heat exchanger is improved.

In the ventilation apparatus of the present invention, it is preferable that a first rib is further provided in the first frame, the first rib intersects with the direction of the airflow passing through the fresh air flow path and the first flow guide rib, and has a first through hole through which the airflow passes, and a second rib is further provided in the second frame, the second rib intersects with the direction of the airflow passing through the exhaust air flow path and the second flow guide rib, and has a second through hole through which the airflow passes.

According to the ventilation equipment, the first reinforcing rib is arranged in the first frame, the first reinforcing rib is crossed with the direction of the airflow flowing through the fresh air flow path and the first flow guide rib and is provided with the first through hole for the airflow to flow, the second reinforcing rib is arranged in the second frame, the second reinforcing rib is crossed with the direction of the airflow flowing through the exhaust air flow path and the second flow guide rib and is provided with the second through hole for the airflow to flow, therefore, the overall strength of the first core body and the second core body can be further improved by utilizing the first reinforcing rib and the second reinforcing rib, meanwhile, the resistance of the first reinforcing rib and the second reinforcing rib on the airflow flowing through the fresh air flow path and the exhaust air flow path can be inhibited, and the pressure loss on the airflow flow path can be inhibited; and the first through holes and the second through holes can enable the airflow on the airflow path to be uniformly distributed.

In the ventilation device of the present invention, it is preferable that the first reinforcing rib is inclined with respect to the first air-guide rib, and the second reinforcing rib is inclined with respect to the second air-guide rib.

According to the ventilation equipment, the first reinforcing ribs are inclined relative to the first flow guide ribs, and the second reinforcing ribs are inclined relative to the second flow guide ribs, so that the change angle of the airflow direction is reduced, and the pressure loss is reduced.

In the ventilator of the present invention, it is preferable that at least one of the first beads and at least one of the second air-guiding beads are provided so as to overlap in the stacking direction.

According to the ventilation equipment of the invention, the at least one first reinforcing rib and the at least one second flow guide rib are overlapped in the stacking direction, so that the heat exchange area can be increased compared with the case that the first reinforcing rib and the second flow guide rib are not overlapped in the stacking direction, thereby improving the whole heat exchange performance.

In the ventilation device according to the present invention, it is preferable that the height of the first frame is smaller than the height of the second frame in the stacking direction.

According to the ventilation device of the present invention, the height of the first frame is smaller than the height of the second frame in the stacking direction, and therefore, the ventilation device contributes to balancing the pressure loss of the fresh air flow path and the exhaust air flow path, and prevents the airflow flow path from being narrowed due to deformation of the squeeze film due to the pressure loss.

In the ventilator of the present invention, it is preferable that the housing includes a top plate, a bottom plate, and a side plate connecting the top plate and the bottom plate, and the heat exchanger is inclined with respect to the housing when viewed in a thickness direction of the top plate.

According to the ventilation device of the present invention, the housing includes the top plate, the bottom plate, and the side plate connecting the top plate and the bottom plate, and the heat exchanger is inclined with respect to the housing as viewed in the thickness direction of the top plate, thereby helping to avoid an excessive size of the ventilation device in one direction as viewed in the thickness direction of the top plate.

In the ventilator of the present invention, it is preferable that the casing includes a top plate, a bottom plate, and a side plate connecting the top plate and the bottom plate, and the heat exchanger is parallel to the casing when viewed in a thickness direction of the top plate.

(effect of the invention)

According to the invention, the first core comprises a first frame, a plurality of first flow guide ribs are arranged in the first frame at intervals along a first direction, the first direction is crossed with the direction of air flow flowing through the fresh air flow path and the stacking direction of the first core and the second core, the second core comprises a second frame, a plurality of second flow guide ribs are arranged in the second frame at intervals along a second direction, and the second direction is crossed with the direction of air flow flowing through the exhaust air flow path and the stacking direction, so that the deformation of the first core and the second core is easily inhibited, the air flow can be guided to smoothly flow in the fresh air flow path and the exhaust air flow path by the first flow guide ribs and the second flow guide ribs, and the pressure loss of the fresh air flow path and the exhaust air flow path is inhibited; furthermore, the arrangement direction of the first flow guide ribs, i.e., the first direction, is crossed with the arrangement direction of the second flow guide ribs, i.e., the second direction, i.e., the first flow guide ribs and the second flow guide ribs are arranged in a crossed manner, so that the membrane positioned between the first flow guide ribs and the second flow guide ribs is not easy to deform, and the number of the first flow guide ribs included in the unit length in the first direction is greater than the number of the second flow guide ribs included in the unit length in the second direction, therefore, the area of an effective heat exchange area formed by the area surrounded by the adjacent first flow guide ribs and the second flow guide ribs can be increased, meanwhile, the deformation of the membrane in the effective heat exchange area due to the unbalanced pressure on the two sides of the membrane can be avoided, the pressure loss of the fresh air flow path can be further suppressed, and meanwhile, the membrane arranged on the two sides of the second core can be supported by the second flow guide ribs, and the pressure loss increase on the air flow path due to the deformation of the membrane can be prevented.

Drawings

Fig. 1 is a plan view schematically showing a ventilation apparatus according to an embodiment of the present invention, with a part of a casing omitted, and schematically showing an air flow passing through a first core along a fresh air passage.

Fig. 2 is a plan view schematically showing a part of the ventilation apparatus of the embodiment of the present invention, from which a casing is omitted, and schematically showing an air flow passing through the second core along the air discharge passage.

Fig. 3 is a partial sectional view schematically showing a heat exchanger included in the ventilator according to the embodiment of the present invention.

Fig. 4 is a plan view schematically showing a state in which a first core and a second core are combined in a ventilator according to an embodiment of the present invention.

Fig. 5 is a plan view schematically showing a single body of the first core included in the ventilator according to the embodiment of the present invention.

Fig. 6 is a plan view schematically showing a single second core included in the ventilator according to the embodiment of the present invention.

Fig. 7 is a perspective view schematically showing a hollow plate that can be used as the first core and the second core in the ventilator according to the embodiment of the present invention.

Fig. 8 is a plan view schematically showing a modification of the first core included in the ventilator according to the embodiment of the present invention.

Fig. 9 is a plan view schematically showing a modification of the second core included in the ventilator according to the embodiment of the present invention.

(description of symbols)

1. Ventilation equipment

10. Shell body

11. First side plate

12. Second side plate

13. Third side plate

14. Fourth side plate

20. Heat exchanger

21. First core

211. First frame

2111. First edge part

2112. First connecting edge

212. First flow guide rib

213. First reinforcing rib

2131. First through hole

22. Second core

221. Second frame

2211. Second side part

2212. Second connecting edge

222. Second flow guiding rib

223. Second reinforcing rib

23. Film

30. Fresh air fan

40. Air exhaust fan

50. Filter

60. Electrical component box

70. First air door

80. Second air door

XF fresh air port

SF air supply outlet

HF return air inlet

PF air outlet

R1 fresh air channel

R2 air exhaust channel

R3 fresh air flow path

R4 exhaust flow path

TK via

L1 first pitch

L2 second pitch

A1 Outside air

A2 Air of the room

M first direction

N second direction

Detailed Description

Next, a ventilator according to an embodiment of the present invention will be described with reference to fig. 1 to 6, in which fig. 1 is a plan view schematically showing a part of a housing of the ventilator according to the embodiment of the present invention, and schematically shows an air flow flowing through a first core along a fresh air passage, fig. 2 is a plan view schematically showing a part of the housing of the ventilator according to the embodiment of the present invention, and schematically shows an air flow flowing through a second core along an exhaust air passage, fig. 3 is a partial sectional view schematically showing a heat exchanger included in the ventilator according to the embodiment of the present invention, fig. 4 is a plan view schematically showing a combination state of the first core and the second core included in the ventilator according to the embodiment of the present invention, fig. 5 is a plan view schematically showing a single body of the first core included in the ventilator according to the embodiment of the present invention, and fig. 6 is a plan view schematically showing a single body of the second core included in the ventilator according to the embodiment of the present invention.

Here, for convenience of explanation, three directions orthogonal to each other are set as an X direction, a Y direction, and a Z direction, one side of the X direction is set as X1, the other side of the X direction is set as X2, one side of the Y direction is set as Y1, the other side of the Y direction is set as Y2, one side of the Z direction is set as Z1, and the other side of the Z direction is set as Z2, and the Z direction coincides with, for example, an actual up-down direction.

(integral structure of ventilator)

As shown in fig. 1 to 3, the ventilation apparatus 1 includes: a casing 10 having a fresh air port XF, an air supply port SF, a return air port HF, and an air discharge port PF, and in which a fresh air passage R1 from the fresh air port XF to the air supply port SF and an air discharge passage R2 from the return air port HF to the air discharge port PF are formed in the casing 10; and a heat exchanger 20 provided in the casing 10, the heat exchanger 20 including a plurality of first cores 21 and a plurality of second cores 22 alternately laminated with a film 23 interposed therebetween, the first cores 21 having a fresh air flow path R3 communicating with the fresh air flow path R1, and the second cores 22 having a discharge air flow path R4 communicating with the discharge air flow path R2.

Here, as shown in fig. 1 and 2, a fresh air fan 30 and an exhaust air fan 40 are further provided in the casing 10. When the fresh air fan 30 is operated, for example, outdoor air A1 is sucked into the casing 10 through the fresh air port XF, and is sent out to the room from the air supply port SF after flowing through the first core 21. When the exhaust fan 40 is operated, for example, indoor air A2 is sucked into the casing 10 through the return air inlet HF, passes through the second core 22, and is discharged to the outside through the exhaust outlet PF. Also, the airflow passing through the first core 21 (specifically, the fresh air flow path R3 thereof) can exchange heat with the airflow passing through the second core 22 (specifically, the exhaust air flow path R4 thereof) via the membrane 23.

As shown in fig. 1 and 2, a filter 50 and an electrical component box 60 are provided in the housing 10. The filter 50 is disposed on the fresh air channel R1, and filters air passing through the first core 21. The electric component box 60 is provided in the discharge duct R2, and electric components for controlling the fresh air fan 30, the discharge fan 40, and the like are provided in the electric component box 60.

As shown in fig. 1 and 2, a first damper 70 and a second damper 80 are provided in the housing 10. The first air door 70 is arranged on the fresh air channel R1 to control the on and off of the fresh air channel R1, and the second air door 80 is arranged on the exhaust air channel R2 to control the on and off of the exhaust air channel R2.

In addition, a bypass channel is also provided in the housing 10, and the bypass channel is used for connecting the fresh air channel R1 with the exhaust air channel R2. Also, a part of the filter 50 is disposed in the bypass passage. The second damper 20 can control the opening and closing of the bypass passage.

(Structure of case)

As shown in fig. 1 and 2, the casing 10 is substantially in the shape of a rectangular parallelepiped box and includes a bottom plate, a top plate, and side plates, wherein the bottom plate and the top plate are spaced apart from each other in the Z direction and face each other, and the side plates connect the bottom plate and the top plate to each other, thereby enclosing an installation space in which the heat exchanger 20, the fresh air fan 30, and the blower fan 40 are installed.

Here, the thickness direction of the top plate and the bottom plate of the case 10 coincides with the Z direction.

Further, as shown in fig. 1 and 2, the side plates of the case 10 include a first side plate 11, a second side plate 12, a third side plate 13, and a fourth side plate 14, wherein the first side plate 11 is opposed to the third side plate 13 with a space therebetween in the X direction, and the second side plate 12 is opposed to the fourth side plate 14 with a space therebetween in the Y direction. The first side plate 11 extends in the Y direction when viewed in the Z direction, a fresh air inlet XF and an air outlet PF are provided in the first side plate 11, the third side plate 13 also extends in the Y direction when viewed in the Z direction, and an air supply outlet SF and an air return inlet HF are provided in the third side plate 13. The fresh air inlet XF and the supply air outlet SF are provided at diagonal positions of the casing 10, and the return air inlet HF and the exhaust air outlet PF are provided at the other diagonal position of the casing 10. Also, the second side panel 12 extends in the X direction when viewed in the Z direction, and the fourth side panel 14 also extends in the X direction when viewed in the Z direction.

(Structure of Heat exchanger)

As shown in fig. 1 and 2, the heat exchanger 20 is substantially rectangular parallelepiped, and the heat exchanger 20 is inclined with respect to the casing 10 when viewed in the thickness direction of the top plate of the casing 10 (any one side of a rectangle that is the outer shape of the heat exchanger 20 when viewed in the Z direction is inclined with respect to any one side of a rectangle that is the outer shape of the casing 10 when viewed in the Z direction).

Here, the heat exchanger 20 includes a bottom plate, a top plate, and a long connecting member, the top plate and the bottom plate are opposed to each other with a space therebetween in the Z direction, the connecting member connects the top plate and the bottom plate of the heat exchanger 20 together, and a first core 21, a second core 22, and a film 23 are provided in a frame body of the heat exchanger 20 constituted by the bottom plate, the top plate, and the connecting member.

As shown in fig. 1, 2, and 4 to 6, the first core 21 includes a first frame 211, a plurality of first air guide ribs 212 arranged at intervals in a first direction M are provided in the first frame 211, the first direction M intersects with the direction of the airflow passing through the fresh air flow path R3 and the stacking direction (in the illustrated example, the Z direction perpendicular to the X direction and the Y direction) of the first core 21 and the second core 22, the second core 22 includes a second frame 221, a plurality of second air guide ribs 222 arranged at intervals in a second direction N are provided in the second frame 221, the second direction N intersects with the direction of the airflow passing through the discharge air flow path R4 and the stacking direction of the first core 21 and the second core 22 and intersects with the first direction N, and the number of the first air guide ribs 212 included in a unit length in the first direction M is larger than the number of the second air guide ribs 222 included in the unit length in the second direction N. Specifically, the first plurality of air-guiding ribs 212 are uniformly arranged at a first interval L1 in the first direction M, and the second plurality of air-guiding ribs 222 are uniformly arranged at a second interval L2 smaller than the first interval L1 in the second direction N. As shown in fig. 3, the height of the first bezel 211 is equal to the height of the second bezel 221 in the stacking direction of the first core 21 and the second core 22.

As shown in fig. 1, 2, and 4 to 6, the first frame 211 includes two first side portions 2111 opposed to each other in the direction of the airflow passing through the fresh air flow path R3, and the second frame 221 includes two second side portions 2211 opposed to each other in the direction of the airflow passing through the exhaust air flow path R4. The first frame 211 further includes two first connection side portions 2112, the first connection side portions 2112 are perpendicular to the first side portions 2111, and both ends of the two first side portions 2111 are connected to enclose a rectangular frame, and the second frame 221 further includes two second connection side portions 2212, the second connection side portions 2212 are perpendicular to the second side portions 2211, and both ends of the two second side portions 2211 are connected to enclose a rectangular frame.

As shown in fig. 1, 2, and 4 to 6, the first air-guide rib 212 is provided between the two first side portions 2111 so as to be inclined with respect to the first side portions 2111, and the second air-guide rib 222 is provided between the two second side portions 2211 so as to be inclined with respect to the second side portions 2211. The first air guide ribs 212 extend substantially parallel to a line connecting the fresh air inlet XF and the air supply port SF (the first air guide ribs 212 are linear and perpendicular to the first direction M), the inclination angle of the first air guide ribs 212 with respect to the first side 2111 is in the range of 80 ° to 88 ° (preferably 85 °), the second air guide ribs 222 extend substantially parallel to a line connecting the return air inlet HF and the air discharge port PF (the second air guide ribs 222 are linear and perpendicular to the second direction N), and the inclination angle of the second air guide ribs 222 with respect to the second side 2211 is in the range of 80 ° to 88 ° (preferably 85 °).

As shown in fig. 1 to 6, the first frame 211 is further provided with first ribs 213 (in the illustrated example, one first rib 213 is formed, but not limited thereto), the first ribs 213 intersect with the direction of the air flow passing through the fresh air flow path R2 and the first guide ribs 212, and have first through holes 2131 through which the air flows (in the illustrated example, a plurality of first ribs 213 are formed at intervals in the longitudinal direction, but not limited thereto), the second frame 221 is further provided with second ribs 223 (in the illustrated example, a plurality of second ribs 223 are formed, but not limited thereto), the second ribs 223 intersect with the direction of the air flow passing through the exhaust air flow path R4 and the second guide ribs 222, and have second through holes through which the air flows (not illustrated, but not limited thereto, a plurality of second through holes may be formed at intervals in the longitudinal direction of the second ribs 223). As shown in fig. 5 and 6, the first ribs 213 are inclined with respect to the first guide ribs 212, and the second ribs 223 are inclined with respect to the second guide ribs 222. As shown in fig. 5 and 6, the first rib 213 is inclined with respect to the first side portion 2111, and the second rib 223 is inclined with respect to the second side portion 2211. As shown in fig. 4, the first beads 213 and one of the second air-guide beads 222 are arranged to overlap in the stacking direction of the first core 21 and the second core 22.

Further, the first core 21 and the second core 22 may be made of plastic, respectively.

Further, as shown in fig. 3, the film 23 is sandwiched by the first core 21 and the second core 22, and may be made of paper, for example.

(main effect of the present embodiment)

According to the ventilation device 1 of the present embodiment, the first core 21 includes the first frame 211, the first frame 211 is provided with the plurality of first flow guide ribs 212 arranged at intervals in the first direction M, the first direction M intersects with the direction of the air flow passing through the fresh air flow path R3 and the stacking direction of the first core 21 and the second core 22, the second core 22 includes the second frame 221, the second frame 221 is provided with the plurality of second flow guide ribs 222 arranged at intervals in the second direction N, and the second direction N intersects with the direction of the air flow passing through the exhaust air flow path R4 and the stacking direction of the first core 21 and the second core 22, so that deformation of the first core 21 and the second core 22 is easily suppressed, the air flow can be guided by the first flow guide ribs 212 and the second flow guide ribs 222 to flow smoothly through the fresh air flow path R3 and the exhaust air flow path R4, and pressure loss of the fresh air flow path R3 and the exhaust air flow path R4 is suppressed; furthermore, the arrangement direction of the first flow guide ribs 212, that is, the first direction M, intersects the arrangement direction of the second flow guide ribs 222, that is, the first flow guide ribs 212 and the second flow guide ribs 222 are arranged to intersect with each other, so that the membrane 23 located between the first flow guide ribs 212 and the second flow guide ribs 222 is not easily deformed, and the number of the first flow guide ribs 212 included in the unit length in the first direction M is greater than the number of the second flow guide ribs 222 included in the unit length in the second direction N, and therefore, the area of the effective heat exchange region formed by the region surrounded by the adjacent first flow guide ribs 212 and the adjacent second flow guide ribs 222 can be increased, and at the same time, the fresh air deformation of the membrane 23 in the effective heat exchange region due to the imbalance of pressures at both sides of the membrane can be avoided, the pressure loss of the flow path R3 can be further suppressed, and at the same time, the membrane 23 arranged at both sides of the second core 22 can be supported by the second flow guide ribs 222, and the increase of the flow path caused by the deformation of the pressure loss of the air flow on the membrane 23 can be prevented.

The present invention is described above by way of example with reference to the accompanying drawings, and it is to be understood that the specific implementations of the present invention are not limited to the above-described embodiments.

For example, in the above embodiment, the heat exchanger 20 is inclined with respect to the casing 10 when viewed in the thickness direction of the top plate of the casing 10, but the present invention is not limited to this, and the heat exchanger 20 may be formed parallel to the casing 10 when viewed in the thickness direction of the top plate of the casing 10.

In the above embodiment, the height of the first frame 211 is equal to the height of the second frame 221 in the stacking direction of the first core 21 and the second core 22, but the present invention is not limited to this, and the height of the first frame 211 may be set to be smaller than the height of the second frame 221.

In the above embodiment, the number of the first air guide ribs 212, the second air guide ribs 222, the first ribs 213, and the second ribs 223 is not limited to the illustrated number, and may be set as appropriate as needed.

In the above embodiment, the first air guide ribs 212, the second air guide ribs 222, the first ribs 213, and the second ribs 223 are linear, but the present invention is not limited thereto, and may be curved in some cases.

In addition, in the above embodiment, the first reinforcing ribs 213 are inclined with respect to the first guide ribs 212, and the second reinforcing ribs 223 are inclined with respect to the second guide ribs 222, but the present invention is not limited thereto, and the first reinforcing ribs 213 may be disposed perpendicular to the first guide ribs 212, and the second reinforcing ribs 223 may be disposed perpendicular to the second guide ribs 222.

In the above embodiment, the first beads 213 are further provided in the first frame 211, and the second beads 223 are further provided in the second frame 221, but the present invention is not limited to this, and one or both of the first beads 213 and the second beads 223 may be omitted in some cases.

Further, in the above embodiment, the first core 21 and the second core 22 may be constituted by hollow plates provided in parallel in the thickness direction with a plurality of through holes TK through which the air flow circulates as shown in fig. 7.

In the above embodiment, as shown in fig. 8, the first air guide beads 212 may be provided so as to be offset on both sides of the first beads 213 in the first core 21, and similarly, as shown in fig. 9, the second air guide beads 222 may be provided so as to be offset on both sides of the second beads 223 in the second core 22.

In the above embodiment, the heat exchanger 20 has a substantially rectangular parallelepiped shape, but the shape is not limited to this, and the heat exchanger 20 may be formed in other shapes.

It should be understood that the present invention can freely combine the respective components in the embodiments, or appropriately change or omit the respective components in the embodiments within the scope thereof.

Claims (10)

1. A ventilation device, comprising: the air conditioner comprises a shell, a fan and a fan, wherein the shell is provided with a fresh air inlet, an air supply outlet, an air return inlet and an air exhaust outlet, and a fresh air channel from the fresh air inlet to the air supply outlet and an air exhaust channel from the air return inlet to the air exhaust outlet are formed in the shell; and a heat exchanger provided in the casing and including a plurality of first cores and second cores alternately stacked with a membrane interposed therebetween, the first cores being formed with fresh air flow paths communicating with the fresh air duct, the second cores being formed with exhaust air flow paths communicating with the exhaust air duct,

the first core (21) comprises a first frame (211), a plurality of first flow guide ribs (212) are arranged in the first frame at intervals along a first direction, the first direction (M) is crossed with the direction of airflow flowing through the fresh air flow path and the stacking direction of the first core and the second core,

the second core (22) includes a second frame (221) in which a plurality of second air guide ribs (222) are provided at intervals in a second direction (N) intersecting with the direction of the air flow flowing through the exhaust air flow path and the stacking direction and intersecting with the first direction (M),

the number of first flow-guiding ribs included in a unit length in the first direction (M) is greater than the number of second flow-guiding ribs included in a unit length in the second direction (N).

2. The ventilation apparatus of claim 1,

the first flow guide ribs are uniformly arranged at a first interval in the first direction,

the plurality of second air guide ribs are uniformly arranged in the second direction at a second distance smaller than the first distance.

3. The ventilation apparatus of claim 1,

the first frame includes two first side portions (2111) opposed to each other in the direction of the airflow passing through the fresh air flow path, the first flow guide rib is provided between the two first side portions so as to be inclined with respect to the first side portions,

the second frame includes two second side portions (2211) opposed to each other in a direction of the air flow passing through the discharge air flow path, and the second air-guide rib is provided between the two second side portions so as to be inclined with respect to the second side portions.

4. The ventilation apparatus of claim 3,

the inclination angle of the first flow guide ribs relative to the first edge part is in the range of 80-88 degrees,

the inclination angle of the second flow guide ribs relative to the second edge is in the range of 80-88 degrees.

5. The ventilation apparatus of claim 1,

a first reinforcing rib (213) is arranged in the first frame (211), the first reinforcing rib is crossed with the direction of the air flow flowing through the fresh air flow path and the first flow guide rib, and is provided with a first through hole for the air flow to circulate,

and a second reinforcing rib (223) is further arranged in the second frame (221), intersects with the direction of the air flow flowing through the air exhaust flow path and the second flow guide rib and is provided with a second through hole for air flow circulation.

6. The ventilation apparatus of claim 5,

the first reinforcing ribs are inclined relative to the first flow guide ribs,

the second reinforcing ribs are inclined relative to the second flow guide ribs.

7. The ventilation apparatus of claim 5,

and at least one first reinforcing rib and at least one second flow guide rib are overlapped in the stacking direction.

8. The ventilation apparatus of claim 1,

in the stacking direction, the height of the first frame is smaller than the height of the second frame.

9. The ventilation apparatus of claim 1,

the shell comprises a top plate, a bottom plate and a side plate for connecting the top plate and the bottom plate,

the heat exchanger is inclined with respect to the housing as viewed in a thickness direction of the top plate.

10. The ventilation apparatus of claim 1,

the shell comprises a top plate, a bottom plate and a side plate for connecting the top plate and the bottom plate,

the heat exchanger is parallel with respect to the housing when viewed in a thickness direction of the top plate.

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