CN210531185U

CN210531185U - Bidirectional energy-saving smoke-proof and smoke-discharging fan

Info

Publication number: CN210531185U
Application number: CN201921396608.5U
Authority: CN
Inventors: 吴雪松
Original assignee: Anhui Chuanghe Mechanical And Electrical Engineering Co Ltd
Current assignee: Anhui Chuanghe Mechanical And Electrical Engineering Co Ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-05-15
Anticipated expiration: 2029-08-27

Abstract

The utility model discloses a two-way energy-saving smoke-exhaust preventing fan, which relates to the technical field of smoke-exhaust preventing fans, and adopts the technical scheme that the fan comprises an outer pipe, a fixing ring fixed on the inner peripheral surface of the outer pipe, an inner pipe fixed on the inner peripheral surface of the fixing ring, and a fixing disc fixed on the inner peripheral surface of the inner pipe, and also comprises an air outlet pipe fixed at the end part of the outer pipe, wherein a disc is fixed on the inner peripheral surface; four support rods are uniformly distributed on the inner peripheral surface of the air outlet pipe, and air inlet pipes are fixed at the end parts of the four support rods; four air outlet through holes are uniformly distributed on the disc; an air inlet through hole is formed in the disc; a rotating ring is rotatably arranged on one side of the disc close to the air inlet pipe, and four retaining pieces are uniformly distributed on the outer peripheral surface of the rotating ring along the circumferential direction; one side of the air inlet pipe is provided with a cover plate; a driving device is arranged between the rotating ring and the disc. The utility model provides a prevent that smoke exhaust fan inhales the problem that air current and exhaust air current influence each other, reduce the exhaust air current and influence the possibility of inhaling the air current.

Description

Bidirectional energy-saving smoke-proof and smoke-discharging fan

Technical Field

The utility model relates to a prevent smoke exhaust fan technical field, more specifically the saying so, it relates to a two-way energy-conserving smoke exhaust fan of preventing.

Background

At present, the smoke prevention and exhaust system consists of air supply and exhaust pipelines, a pipe well, a fire valve, door switching equipment, a fan and other equipment. The smoke exhaust fan is a machine capable of rapidly exhausting indoor peculiar smell, high temperature and oil smoke gas.

The prior art can refer to the chinese utility model patent with the publication number CN2760299, which discloses a bidirectional energy-saving smoke exhaust preventing fan, comprising an air inlet impeller shell, an air inlet impeller arranged in the air inlet impeller shell, a plurality of air inlet connecting pipes fixed on one side of the air inlet impeller shell and an air inlet and exhaust conversion connecting pipe fixedly connected with the other end of the air inlet connecting pipe, wherein the air inlet and exhaust conversion connecting pipe comprises an inner pipe and an outer pipe, an air exhaust impeller is arranged in the inner pipe, and the inner pipe and the outer pipe are respectively communicated with a transducer.

However, the air inlet pipe and the air outlet pipe of the smoke and smoke preventing fan share one transducer, and the air flow discharged outwards can be influenced by the air flow sucked inwards, so that part of the discharged air flow returns to the indoor space along with the sucked air flow, and the air exchange efficiency of the smoke and smoke preventing fan is influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a two-way energy-conserving smoke protection and exhaust fan, it reduces the exhaust air current and influences the possibility of inhaling the air current through setting up separation blade and apron respectively at air outlet and air intake.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a bidirectional energy-saving smoke-exhaust-preventing fan comprises an outer pipe, a fixing ring fixed on the inner peripheral surface of the outer pipe, an inner pipe fixed on the inner peripheral surface of the fixing ring, a fixing disc fixed on the inner peripheral surface of the inner pipe, and an air outlet pipe fixed at the end part of the outer pipe, wherein a disc is fixed on the inner peripheral surface of the air outlet pipe;

four support rods are uniformly distributed on the inner peripheral surface of the air outlet pipe along the circumferential direction, and air inlet pipes are fixed at the end parts of the four support rods; four air outlet through holes are uniformly distributed on the disc along the circumferential direction; an air inlet through hole is formed in the disc;

a rotating ring is rotatably mounted on one side, close to the air inlet pipe, of the disc, and four blocking pieces for blocking the air outlet through hole are uniformly distributed on the outer peripheral surface of the rotating ring along the circumferential direction; a cover plate for preventing the air inlet pipe from entering air is detachably arranged on one side, away from the disc, of the air inlet pipe; and a driving device for driving the rotating ring to rotate is arranged between the rotating ring and the disc.

Through adopting above-mentioned technical scheme, the rotating ring drives the separation blade and rotates to when overlapping with the air-out through-hole, and the separation blade shelters from the air-out through-hole, reduces the outdoor air and flows into indoor possibility by the air-out through-hole. After the cover plate is covered with the air inlet pipe, the possibility that indoor air flows into the inner pipe from the air inlet pipe is reduced. In the process that the air inlet pipe enters air into the room, the possibility that the sucked air flow is discharged from the air outlet through hole is reduced by covering the air outlet through hole.

The utility model discloses further set up to: the driving device comprises an inner gear ring fixed on the inner peripheral surface of the rotating ring and a gear rotatably arranged on one side of the disc close to the air inlet pipe, and the inner gear ring is meshed with the gear; and a rotating mechanism for driving the gear to rotate is arranged between the gear and the cover plate.

By adopting the technical scheme, after the rotating mechanism drives the gear to rotate, the gear drives the rotating ring to rotate through the inner gear ring, so that the blocking piece is overlapped with the air outlet through hole, and the possibility of exhausting the sucked air flow through the air outlet through hole is reduced;

the utility model discloses further set up to: the rotating mechanism comprises a circular through hole arranged at the end part of the air inlet pipe, a rotating shaft fixed at one side of the gear close to the air inlet pipe and a rotating circular pipe fixed at one side of the cover plate close to the air inlet pipe; the rotating shaft is rotatably arranged in the circular through hole; five spiral grooves are uniformly distributed on the inner peripheral surface of the rotating circular tube along the circumferential direction, five spiral protrusions are uniformly distributed on the outer peripheral surface of the rotating shaft along the circumferential direction, and the rotating circular tube is meshed with the rotating shaft.

Through adopting above-mentioned technical scheme, when the apron was to being close to air-supply line one side and removing, drive the rotation axial and be close to disc one side and remove, the heliciform arch is to being close to disc one side removal in-process, drives the heliciform recess and revolutes the rotation axis circumferencial direction and rotate to the drive rotates the pipe and rotates, rotates the pipe and drives the gear rotation. The cover plate is covered to close the air inlet pipe, indoor air cannot be discharged outwards through the air inlet pipe, meanwhile, when the cover plate moves towards one side close to the air inlet pipe, the gear and the inner gear ring are meshed to drive the retaining pieces to be separated from the air outlet through holes, and outdoor air enters the indoor space through the air outlet through holes, so that conversion from air exhaust to air inlet is achieved.

The utility model discloses further set up to: the inner gear ring is provided with a slot on one side close to the air inlet pipe, the end part of the air inlet pipe is provided with a square through hole, an insertion block used for being inserted into the slot is arranged in the square through hole in a sliding mode along the axial direction of the air inlet pipe, and a pressing mechanism used for fixing the insertion block into the slot is arranged in the slot.

Through adopting above-mentioned technical scheme, the inserted block slides to being close to disc one side along the air-supply line axial to in inserting the slot, and fix the inserted block through pressing mechanism, when outside air flows into indoorly by the air-out through-hole, through the fixed ring gear of inserted block, reduced the separation blade and sheltered from the possibility of air-out through-hole.

The utility model discloses further set up to: the pressing mechanism comprises a spring fixed at the top of the slot, a pressing piece fixed at the bottom end of the spring, a pressing component arranged between the pressing piece and the inserting block and used for pushing the pressing piece to move towards one side close to the spring, and a guide component arranged between the pressing piece and the slot and used for driving the pressing piece to move along the radial direction of the inner gear ring.

Through adopting above-mentioned technical scheme, after the contact of inserted block and pressing piece, support to pressing piece to the slot top through supporting pressing the subassembly, the pressing piece removes the compression of in-process spring, and the spring exerts elasticity to the pressing piece, and the pressing piece receives elasticity and exerts pressure to the inserted block to fix the inserted block through the pressing piece, be convenient for improve the fixed effect to the inserted block, reduce the air inlet in-process separation blade and shelter from the possibility of air-out through-hole.

The utility model discloses further set up to: the pressing component comprises two inclined planes which are respectively arranged on the opposite inner sides of the pressing piece and the inserting block.

Through adopting above-mentioned technical scheme, the piece contacts the back with the pressing piece, supports to pressing piece through the inclined plane to slot 34 top, is convenient for promote the pressing piece through the piece of inserting and removes to the slot top to realize the pressing piece fixed to the piece of inserting.

The utility model discloses further set up to: the guide assembly comprises a circular groove formed in the top of the insertion groove and a guide shaft fixed to the top of the pressing piece, and the guide shaft is arranged in the circular groove in a sliding mode along the radial direction of the inner gear ring.

Through adopting above-mentioned technical scheme, circular recess provides the guide effect for the guiding axle, reduces the possibility that the according to the parts deviation moved the orbit.

The utility model discloses further set up to: the cover plate is fixed with a sealing ring on one side close to the air inlet pipe, an annular sealing groove is formed in one side, away from the disc, of the air inlet pipe, and the cover plate is connected with the sealing groove in an inserting mode through the sealing ring.

Through adopting above-mentioned technical scheme, through setting up the sealing washer, reduce apron and air-supply line lid and close the possibility that the back gas got into the air-supply line.

To sum up, the utility model discloses compare and have following beneficial effect in prior art:

1. the blocking piece is arranged to block the air outlet through hole, so that the possibility that external air flows into the room from the air outlet through hole is reduced;

2. after the cover plate is covered with the air inlet pipe, the possibility that indoor air flows into the inner pipe from the air inlet pipe is reduced;

3. after the cover plate is dragged out, the inner gear ring is driven to rotate through the gear, and the separation blade is further driven to move to the air outlet through hole, so that the air outlet through hole is in a closed state in the air inlet process of the air inlet pipe, and air inlet and air outlet cannot interfere with each other. .

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the central highlighting drive of the present invention;

FIG. 3 is a cross-sectional view of the rotation mechanism of the present invention;

FIG. 4 is an enlarged schematic view at A in FIG. 3;

fig. 5 is a schematic structural view of the middle prominent sealing ring of the present invention.

In the figure: 1. an outer tube; 11. a fixing ring; 12. an inner tube; 13. fixing the disc; 14. an air inlet impeller; 15. an air outlet impeller; 16. an air inlet motor; 17. an air outlet motor; 2. an air outlet pipe; 21. a disc; 22. a support bar; 23. an air inlet pipe; 24. an air outlet through hole; 25. an air inlet through hole; 26. a rotating ring; 27. a baffle plate; 28. a cover plate; 3. a drive device; 31. an inner gear ring; 32. a gear; 33. a rotating mechanism; 331. a circular through hole; 332. rotating the circular tube; 333. a rotating shaft; 34. a slot; 35. a square through hole; 36. inserting a block; 37. a pressing mechanism; 371. a spring; 372. a pressing member; 373. a pressing component; 3731. a bevel; 374. a guide assembly; 3741. a circular groove; 3742. a guide shaft; 38. a seal ring; 39. sealing the groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Example (b): a two-way energy-saving smoke-proof and exhaust fan comprises an outer pipe 1, a fixing ring 11 fixed on the inner circumferential surface of the outer pipe 1, an inner pipe 12 fixed on the inner circumferential surface of the fixing ring 11 and a fixing disc 13 fixed on the inner circumferential surface of the inner pipe 12, wherein the fixing disc is a hollow cylinder; the fixing ring 11 is arranged perpendicular to the axis of the outer tube 1, and the fixing ring 13 is arranged perpendicular to the axis of the inner tube 12. The surfaces of the fixed ring 11 and the fixed disc 13 are respectively and uniformly distributed with a plurality of air inlet holes along the circumferential direction. Two air inlet motors 16 are installed on one side of the fixing ring 11 close to the air inlet of the outer pipe 1, and air inlet impellers 14 are respectively fixed at the output ends of the two air inlet motors 16. An air outlet motor 17 is installed on one side of the fixed disc 13, which is far away from the air inlet of the outer tube 1, and an air outlet impeller 15 is fixed at the output end of the air outlet motor 17. After the air inlet motor 16 drives the air inlet impeller 14 to rotate, external air flow is sent into a room through the outer pipe 1; after the air outlet motor 17 drives the air outlet impeller 15 to rotate, the inner pipe 12 discharges the internal airflow to the outside.

As shown in fig. 2 and 3, the air outlet pipe 2 is fixed at one end of the air outlet of the outer pipe 1; a disc 21 is fixed on the inner peripheral surface of the air outlet pipe 2, and one end of an air inlet of the inner pipe 12 is fixedly connected with the disc 21. Four support rods 22 are uniformly distributed on the inner circumferential surface of the air outlet pipe 2 along the circumferential direction, air inlet pipes 23 are fixed at the end parts of the four support rods 22, and gaps are reserved between one ends of the air inlet pipes 23, which are close to the disc 21, and the disc 21. Four air outlet through holes 24 are uniformly distributed on the surface of the disc 21 along the circumferential direction, and the cross sections of the air outlet through holes 24 are fan-shaped. An air inlet through hole 25 is arranged at the center of the surface of the disc 21. A rotating ring 26 is rotatably mounted on one side of the disc 21 close to the air inlet pipe 23, and four blocking pieces 27 for blocking the air outlet through hole 24 are uniformly distributed on the outer peripheral surface of the rotating ring 26 along the circumferential direction; the baffle plate 27 has a sector ring shape in cross section. The rotary ring 26 is rotatably connected to the air inlet duct 23 at a side remote from the disc 21. A cover plate 28 for preventing the air inlet of the air inlet pipe 23 is detachably arranged on one side of the air inlet pipe 23 away from the disc 21. A driving device 3 for driving the rotation ring 26 to rotate is arranged between the rotation ring 26 and the disc 21. The rotating ring 26 is arranged in a gap between the air inlet pipe 23 and the disc 21, and when the rotating ring 26 drives the blocking piece 27 to rotate to overlap with the air outlet through hole 24, the blocking piece 27 blocks the air outlet through hole 24, so that the possibility that outside air flows into a room through the air outlet through hole 24 is reduced. After the cover plate 28 is covered with the air outlet pipe 2, the possibility that indoor air flows into the inner pipe 12 from the air outlet pipe 2 is reduced.

As shown in fig. 2, the driving unit 3 includes an inner ring gear 31 fixed to the inner peripheral surface of the rotating ring 26 and a gear 32 rotatably mounted to the disk 21 on a side close to the air inlet duct 23, the inner ring gear 31 being engaged with the gear 32. A rotating mechanism 33 for driving the rotation of the gear 32 is provided between the gear 32 and the cover plate 28. After the rotating mechanism 33 drives the gear 32 to rotate, the gear 32 drives the rotating ring 26 to rotate through the inner gear ring 31, so that the blocking piece 27 overlaps the air outlet hole 24.

As shown in fig. 2 and 3, the rotating mechanism 33 includes a circular through hole 331 opened at the end of the air inlet duct 23, a rotating shaft 333 fixed to the gear 32 on the side close to the air inlet duct 23, and a rotating circular tube 332 fixed to the cover 28 on the side close to the air inlet duct 23. The rotation shaft 333 is rotatably installed in the circular through hole 331. Five spiral grooves are uniformly distributed on the inner peripheral surface of the rotating circular tube 332 in the circumferential direction, five spiral protrusions are uniformly distributed on the outer peripheral surface of the rotating shaft 333 in the circumferential direction, and the rotating circular tube 332 is meshed with the rotating shaft 333. When the cover plate 28 moves to the side close to the air inlet pipe 23, the rotating shaft 333 is driven to move to the side close to the disc 21, and the spiral groove is driven to rotate around the circumferential direction of the rotating shaft 333 in the process that the spiral protrusion moves to the side close to the disc 21, so that the rotating circular pipe 332 is driven to rotate, and the rotating circular pipe 332 drives the gear 32 to rotate.

As shown in fig. 3 and 4, a slot 34 is formed in one side of the inner ring gear 31 close to the air inlet pipe 23, a square through hole 35 is formed in the end portion of the air inlet pipe 23, an insertion block 36 for being inserted into the slot 34 is slidably arranged in the square through hole 35 along the axial direction of the air inlet pipe 23, and a pressing mechanism 37 for fixing the insertion block 36 in the slot 34 is arranged in the slot 34. The insert block 36 slides along the axial direction of the air inlet pipe 23 to the side close to the disc 21 until being inserted into the slot 34, and the insert block 36 is fixed by the pressing mechanism 37.

As shown in fig. 4, the pressing mechanism 37 includes a spring 371 fixed to the top of the insertion groove 34, a pressing member 372 fixed to the bottom end of the spring 371, a pressing member 373 disposed between the pressing member 372 and the insertion block 36 for pushing the pressing member 372 to move toward the side close to the spring 371, and a guiding member 374 disposed between the pressing member 372 and the insertion groove 34 for driving the pressing member 372 to move along the radial direction of the ring gear 31. After the contact of the insertion block 36 and the pressing piece 372, the pressing piece 372 is pressed against the top of the slot 34 by the pressing component 373, the spring 371 is compressed in the moving process of the pressing piece 372, the spring 371 applies elastic force to the pressing piece 372, and the pressing piece 372 applies pressure to the insertion block 36 by the elastic force.

As shown in fig. 4, the pressing member 373 includes two inclined surfaces 3731 respectively disposed at opposite inner sides of the pressing member 372 and the insertion block 36. After the contact block 36 contacts the pressing member 372, the pressing member 372 is pressed against the top of the insertion slot 34 by the inclined surface 3731, and the pressing member 372 is driven to move towards the top of the insertion slot 34.

As shown in fig. 4, the guiding assembly 374 includes a circular groove 3741 opened at the top of the insertion groove 34 and a guiding shaft 3742 fixed to the top of the pressing member 372, and the guiding shaft 3742 is slidably disposed in the circular groove 3741 along the radial direction of the ring gear. The circular groove 3741 provides a guide for the guide shaft 3742, reducing the possibility of the pressing member 372 deviating from the moving track.

As shown in fig. 5, a sealing ring 38 is fixed on one side of the cover plate 28 close to the air inlet pipe 23, and with reference to fig. 3, an annular sealing groove 39 is formed on one side of the air inlet pipe 23 away from the disc 21, and the cover plate 28 is inserted into the sealing groove 39 through the sealing ring 38. The sealing ring 38 is a rubber ring. By providing the sealing ring 38, the possibility of air entering the air inlet duct 23 after the cover plate 28 is covered with the air inlet duct 23 is reduced.

The working principle of the embodiment is as follows:

when the cover 28 moves toward the side close to the air inlet duct 23, the rotating shaft 333 is moved toward the side close to the disk 21, and the gear 32 is rotated by rotating the circular tube 332. The gear 32 drives the rotating ring 26 to rotate through the inner gear ring 31, so that the blocking piece 27 is overlapped with the air outlet through hole 24, the blocking piece 27 blocks the air outlet through hole 24, and the possibility that outside air flows into a room through the air outlet through hole 24 is reduced. After the cover plate 28 is covered with the air outlet pipe 2, the possibility that indoor air flows into the inner pipe 12 from the air outlet pipe 2 is reduced.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a two-way energy-conserving smoke protection and exhaust fan, includes outer tube (1), is fixed in solid fixed ring (11) of outer tube (1) inner peripheral surface, is fixed in inner tube (12) of solid fixed ring (11) inner peripheral surface and is fixed in fixed disk (13) of inner tube (12) inner peripheral surface, its characterized in that: the air outlet pipe is characterized by also comprising an air outlet pipe (2) fixed at the end part of the outer pipe (1), wherein a disc (21) is fixed on the inner circumferential surface of the air outlet pipe (2);

four support rods (22) are uniformly distributed on the inner peripheral surface of the air outlet pipe (2) along the circumferential direction, and air inlet pipes (23) are fixed at the end parts of the four support rods (22); four air outlet through holes (24) are uniformly distributed on the disc (21) along the circumferential direction; an air inlet through hole (25) is formed in the disc (21);

a rotating ring (26) is rotatably mounted on one side, close to the air inlet pipe (23), of the disc (21), and four blocking pieces (27) used for blocking the air outlet through hole (24) are uniformly distributed on the outer peripheral surface of the rotating ring (26) along the circumferential direction; a cover plate (28) used for preventing the air inlet of the air inlet pipe (23) is detachably arranged on one side, away from the disc (21), of the air inlet pipe (23); and a driving device (3) for driving the rotating ring (26) to rotate is arranged between the rotating ring (26) and the disc (21).

2. The two-way energy-saving smoke exhaust preventing fan according to claim 1, characterized in that: the driving device (3) comprises an inner gear ring (31) fixed on the inner peripheral surface of the rotating ring (26) and a gear (32) rotatably mounted on one side of the disc (21) close to the air inlet pipe (23), and the inner gear ring (31) is meshed with the gear (32); and a rotating mechanism (33) for driving the gear (32) to rotate is arranged between the gear (32) and the cover plate (28).

3. The two-way energy-saving smoke exhaust preventing fan according to claim 2, characterized in that: the rotating mechanism (33) comprises a circular through hole (331) arranged at the end part of the air inlet pipe (23), a rotating shaft (333) fixed on one side of the gear (32) close to the air inlet pipe (23) and a rotating circular pipe (332) fixed on one side of the cover plate (28) close to the air inlet pipe (23); the rotating shaft (333) is rotatably arranged in the circular through hole (331); five spiral grooves are uniformly distributed on the inner circumferential surface of the rotating circular tube (332) along the circumferential direction, five spiral protrusions are uniformly distributed on the outer circumferential surface of the rotating shaft (333) along the circumferential direction, and the rotating circular tube (332) is meshed with the rotating shaft (333).

4. The two-way energy-saving smoke exhaust preventing fan according to claim 2, characterized in that: the inner gear ring (31) is provided with a slot (34) on one side close to the air inlet pipe (23), the end part of the air inlet pipe (23) is provided with a square through hole (35), an inserting block (36) used for being inserted into the slot (34) is arranged in the square through hole (35) in a sliding mode along the axial direction of the air inlet pipe (23), and a pressing mechanism (37) used for fixing the inserting block (36) into the slot (34) is arranged in the slot (34).

5. The two-way energy-saving smoke exhaust preventing fan according to claim 4, characterized in that: the pressing mechanism (37) comprises a spring (371) fixed to the top of the insertion groove (34), a pressing piece (372) fixed to the bottom end of the spring (371), a pressing component (373) arranged between the pressing piece (372) and the insertion block (36) and used for pushing the pressing piece (372) to move towards one side close to the spring (371), and a guide component (374) arranged between the pressing piece (372) and the insertion groove (34) and used for driving the pressing piece (372) to move along the radial direction of the annular gear (31).

6. The two-way energy-saving smoke exhaust preventing fan according to claim 5, characterized in that: the pressing component (373) comprises two inclined planes (3731) which are respectively arranged on the opposite inner sides of the pressing piece (372) and the inserting block (36).

7. The two-way energy-saving smoke exhaust preventing fan according to claim 6, characterized in that: the guide assembly (374) comprises a circular groove (3741) formed in the top of the insertion groove (34) and a guide shaft (3742) fixed to the top of the pressing piece (372), and the guide shaft (3742) is arranged in the circular groove (3741) in a sliding mode along the radial direction of the inner gear ring (31).

8. The two-way energy-saving smoke exhaust preventing fan according to claim 6, characterized in that: apron (28) are close to air-supply line (23) one side and are fixed with sealing washer (38), annular seal groove (39) have been seted up to air-supply line (23) one side of keeping away from disc (21), apron (28) are pegged graft through sealing washer (38) and seal groove (39).