JP2663770B2 - Booth air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a booth, and more particularly, to a structure having a structure in which air is blown into an air passage provided in a casing in a longitudinal direction and the air is circulated in the booth. It is about improvement.

[0002]

2. Description of the Related Art Conventional booth air conditioners of this type include:
The technology described in Japanese Utility Model Laid-Open No. 49-12741 can be mentioned.

As shown in the above publication, a booth air conditioner is generally mounted and fixed on the roof of a toll booth such as a toll road for the purpose of cooling and heating the booth. In the booth air conditioner, various devices including a fan are arranged in a casing, indoor air in the booth and outside air outside the booth are introduced into the casing by the fan, and heat is exchanged by a heat exchanger. The heat exchange air is circulated again in the booth. In addition, as a further improvement of this type of booth air conditioner, the applicant has proposed an arrangement in which an air passage for circulating air in the casing is provided in the longitudinal direction of the casing. This booth air conditioner is configured such that a filter and a heat exchanger are arranged on one side of an air passage extending in a longitudinal direction in a casing, and the air is blown into the air passage by a fan to increase the pressure in the air passage. The differential pressure is used to blow air to the filter and heat exchanger located on one side of
It has advantages such as easy handling of various devices during maintenance.

[0004]

In the booth air conditioner described above, the air path is disposed in the casing in the longitudinal direction, and the air path extends from one end, which is the near side of the air path, to the other end, which is the back side of the air path. The wind pressure in the air path is
The wind flow is higher on the far side where the casing collides with the casing than on the near side of the wind path, and the wind pressure in the wind path is not uniform. Accordingly, the wind speed of the airflow passing through the filter and the heat exchanger located on one side of the airflow becomes correspondingly non-uniform.
Here, the heat exchange efficiency by the heat exchanger is improved, or
In order to efficiently send the conditioned air from the booth air conditioner into the booth, it is preferable that the wind speed of the airflow passing through the filter and the heat exchanger is uniform, so that the wind pressure in the air path is uniform. Preferably, there is.

Accordingly, an object of the present invention is to provide a booth air conditioner having a uniform air pressure in an air passage.

[0006]

A booth air conditioner according to the present invention comprises: a casing mounted on a booth roof;
An air path provided in the casing in the longitudinal direction, a filter and a heat exchanger arranged in the air path along the longitudinal direction, and provided on one end side in the longitudinal direction of the air path, upstream of the filter in the air path. An outside air fan that blows air to the side, and arranged in a zigzag manner along the longitudinal direction of the air path, upstream from the filter of the air path, and from one end side to the other end in the longitudinal direction of the air path. An air guide having a guide surface obliquely approaching the filter, and a pressurizing fan provided downstream of the filter in the air path and introducing air that has passed through the filter and the heat exchanger from the air path into the booth. It is provided.

[0007]

In the present invention, when the outside air fan is driven,
On the upstream side of the filter and the heat exchanger disposed in the air passage, air is blown from one end in the longitudinal direction of the air passage to the other end, and the air flow in the air passage is air-guided on one end in the longitudinal direction. From the guide surface of the air guide on the other end side, the wind direction is changed along the guide surface in a direction oblique to the longitudinal direction of the air path toward the filter, and the filter and the heat are changed. Since the air passes through the exchanger, the wind pressure in the air path is dispersed not only at the other end in the longitudinal direction but also at the positions of the air guides spaced apart in the longitudinal direction, and the wind pressure in the air path is reduced. As well as being uniform, the air volume and velocity of the air flow passing through the filter and the heat exchanger are also uniform at each location in the longitudinal direction, so that the air flow downstream from the filter is smooth.

[0008]

Embodiments of the present invention will be described below.

FIG. 1 is a perspective view showing the appearance of a booth air conditioner according to one embodiment of the present invention, FIG. 2 is a perspective view showing the internal structure of the booth air conditioner according to the embodiment, and FIG. FIG. 4 is a sectional view of the right side of the booth air conditioner of the embodiment, FIG. 5 is a sectional view of the left side of the booth air conditioner of the embodiment, and FIG. It is a plane sectional view of an air conditioner for booths of an example.

In the drawing, 1 is a substantially rectangular base fixed on the roof of a booth (not shown) such as a toll booth on a toll road, 2 is an outer wall constituting a front wall, and 3 is left and right side walls. The outer wall 4, which is constituted, is an outer wall fixed to the upper end of the right side of the outer walls 2, 3 with screws or the like, 5 is the roof fixed to the upper end of the left front half of the outer walls 2, 3 with the screw or the like, and 6 is the above. It is a cover that covers an upper part, a left part, and a rear part of the left rear half of the base 1. 6a is a plurality of ventilation holes formed in the upper wall of the cover 6,
Reference numeral 6b denotes a plurality of ventilation holes formed in the side wall of the cover 6. Reference numeral 7 denotes a hinge for connecting the roof 5 and the cover 6 to each other so as to be openable and closable. Reference numeral 8 denotes a handle fixed to the roof 5 and the cover 6, respectively. By moving the cover 6 up and down by the handle 8, the cover 6 is opened and closed with respect to the roof 5 via the hinge 7. In addition, the roof 5 is moved up and down by the handle 8 in a state where the fixing by the screw or the like is released, so that the roof 5 is opened and closed with respect to the cover 6 via the hinge 7. Reference numeral 9 denotes a booth air conditioner casing formed in a substantially rectangular parallelepiped shape by the base 1, the outer walls 2, 3, 4, the roof 5, the cover 6, and the hinge 7.

Reference numeral 10 denotes a shielding wall vertically provided below the boundary between the roof 5 and the cover 6. Reference numeral 11 denotes an inner wall which is vertically provided below a boundary between the outer wall 4 and the cover 6 and has a front portion having a substantially L-shaped cross section to be separated from the base 1 and a rear portion together with the shielding wall 10. The inside of the casing 9 is divided into two parts in an airtight manner. Reference numeral 12 denotes an outdoor unit accommodation room formed by the cover 6, the shielding wall 10, and the rear portion of the inner wall 11. Reference numeral 15 denotes an outdoor unit housed and fixed in the outdoor unit housing room 12, which corresponds to an outdoor unit of a normal building air conditioner, and includes various devices (not shown) such as a compressor, a blower, and a heat exchanger. Accommodating.

Numeral 31 denotes a swash plate fixed in the left-right direction between the lower end of the front part of the inner wall 11 and the outer wall 3.
As shown in FIG. 2, the front edge is closely contacted with the outer wall 2. 31a constitutes a front portion of the swash plate 31; an inclined portion inclined downward and extending rearward; 31b constitutes a rear portion of the swash plate 31 and extends substantially horizontally and has a rear edge and the shielding wall 10;
And a horizontal portion forming a predetermined gap between the horizontal portion.

Reference numeral 32 denotes a partition plate fixed between the front part of the inner wall 11 and the outer wall 3 in the left-right direction, and vertically partitions the space between the swash plate 31 and the roof 5. The edge extends closely to the outer wall 2 and extends rearward, and similarly to the swash plate 31, a predetermined gap is formed between the rear edge and the shielding wall 10. Reference numeral 33 denotes an open air path formed by the partition plate 32, the outer wall 2, and the roof 5 above the partition plate 32, and 34 denotes a space between the partition plate 32 and the swash plate 31, and the partition plate 32, the outer wall 2, and the swash plate 31. , Which forms an air passage which is cut off from the outside air passage 33 by the partition plate 32. Reference numeral 35 denotes an outside air filter fixed so as to extend over the entire left and right sides of the partition plate 32. The outside air filter 35 divides the outside air passage 33 into front and rear portions so as to be divided into two. 36 is an inclined portion 31 of the partition plate 32 and the swash plate 31
a circulating filter fixed so as to extend over the entire left-right direction between the circulating filter and the air filter, which divides the indoor air passage 34 into two parts by blocking it forward and backward.

As a result, both the outside air passage 33 and the indoor air passage 34 extend in the longitudinal direction of the casing 9,
The outside air filter 35 and the circulation filter 36 both extend in the longitudinal direction of the outside air passage 33 and the indoor air passage 34. A heat exchanger 37 is disposed on the rear side of the indoor air passage 34 that is divided into two parts by the circulation filter 36, and fixed between the partition plate 32 and the horizontal portion 31b of the swash plate 31. Reference numeral 38 denotes a heater fixed to the rear of the heat exchanger 37.

Reference numeral 39 denotes an air mixing chamber formed downstream of the outside air passage 33 and the indoor air passage 34 and communicated with a gap between the partition plate 32 and the shielding wall 10. Thus, the heat exchanger 37 is separated from the outside air passage 33 by the partition plate 32 into the air mixing chamber 39.
Only the air introduced from the indoor air passage 34 into the air mixing chamber 39 is shut off from the outside air introduced into the heat exchanger 37.
Pass through.

Reference numeral 40 denotes an upper surface of the partition plate 32 in the outside air passage 33 and an upstream side of the outside air filter 35;
That is, a plurality (three in the illustrated example) of flat air guides fixed in front of the outside air filter 35,
As shown in FIG. 6, the partition plates 32 are arranged in a staggered manner at predetermined intervals along the longitudinal direction from the right end to the left end. Further, the air guide 40 on the innermost side of the outside air passage 33 is provided with the casing 9 located at the innermost portion of the outside air passage 33.
Are arranged at a distance from the inner surface of the outer wall 3. A guide surface 40a is formed by a right side surface of each of the air guides 40 having a flat plate shape. The guide surface 40a approaches the outside air filter 35 from the right side, which is the near side of the outside air passage 33, to the left side, which is the back side. Oblique at a predetermined angle. The air guide 4
The arrangement interval of 0, the number of arrangements, and the oblique angle of the guide surface 40a of each air guide 40 are appropriately selected so as to make the wind pressure at each position in the longitudinal direction of the outside air passage 33 uniform.

Reference numeral 41 denotes an inner wall which partitions the space below the swash plate 31 to the left and right, reference numeral 42 denotes a first blowing chamber formed to the left of the inner wall 41 so as to communicate with the air mixing chamber 39, and reference numeral 43 denotes a downward direction. A partition plate 43a is provided obliquely and partitions a space formed to the right of the inner wall 41 into an oblique shape.
The lower end of the elliptical hole 44 communicates with the inside of a booth (not shown), and the upper end thereof is connected to the partition plate 43.
The circulation suction pipe communicates with the elliptical hole 43a of the first embodiment, and the partition plate 43 and the circulation suction pipe 44 constitute a double pipe. Reference numeral 45 denotes a second blow-out chamber formed below the partition plate 43. The second blow-off chamber 45 is hermetically shielded from the air mixing chamber 39 by the inner wall 41, while communicating with the inside of the booth. Reference numeral 46 denotes a pressurizing fan disposed in the first blow-out chamber 42, the blow-out port of which is attached to the inner wall 41 to suck the mixed air in the air mixing chamber 39 into the first blow-out chamber 42. , Can be blown to the second blowing chamber 45.

A control box 47 accommodates a control panel (not shown) disposed between the outer wall 3 and the rear portion of the inner wall 11. Reference numeral 48 denotes an intake port fixed to the outer wall 4 and communicated with the outside of the casing 9; 49, an inner wall which partitions a space in front of the control box 47 into front and rear;
9, a first intake chamber communicating with the intake port 48, an inner wall 51 vertically dividing a space in front of the first intake chamber 50, and a second wall 52 formed above the inner wall 51. 2
The first suction chamber 53 is located on the right of the outside air passage 33.
An outside air fan as a blower fan disposed in the intake chamber 50, as shown in FIG.
1, outside air outside the casing 9 is sucked into the first intake chamber 50 from the intake port 48 and can be blown to the second intake chamber 52. Reference numeral 54 denotes a communication port formed in a front portion of the inner wall 11 and communicates the second intake chamber 52 with the outside air passage 33.

Reference numeral 55 denotes a first circulation chamber formed above the partition plate 43. The first circulation chamber 55 is airtightly shielded from the air mixing chamber 39 by the inner wall 41, while the circulation suction pipe 44 is closed. Through this, it is in communication with the inside of the booth. 5
Reference numeral 6 denotes a second circulation chamber formed above the first circulation chamber 55. The second circulation chamber 6 communicates with the first circulation chamber 55, while the first and second intake chambers 50 and 52 are airtight. It is shielded in a shape. Reference numeral 57 denotes a circulation fan as a blower fan disposed in the second circulation chamber 56 located on the right side of the indoor air passage 34, the outlet of which is attached to the front part of the inner wall 11, and the inside of the booth. Of the indoor air from the circulation suction pipe 4
The air is sucked into the second circulation chamber 57 from the first circulation chamber 55 through the fourth circulation chamber 4 and can be blown to the indoor air passage 34.

Next, the operation of the booth air conditioner of the present embodiment configured as described above will be described.

First, the operation of the booth air conditioner is started,
When the circulation fan 58 is driven, the circulation fan 58 draws room air in the booth from the circulation suction pipe 44 to the first circulation chamber 5.
5 into the second circulation chamber 56 and the indoor air passage 3
Blow out to the front side of 4 and blow. The air blown to the front side of the indoor air passage 34 is guided to the left from the right end on the front side along the outer wall 2, the swash plate 31, and the partition plate 32 forming the indoor air passage 34. Introduced,
After passing through the circulation filter 36, dust in the air is removed. Then, the air that has passed through the circulation filter 36 is guided to the rear side of the indoor air passage 34 along the partition plate 32, passes through the heat exchanger 37 behind the circulation filter 36, and is heat-exchanged. It is introduced into the mixing chamber 39.

On the other hand, when the outside air fan 53 is driven, the outside air fan 53 sucks outside air, which is fresh air outside the booth, from the intake port 48 into the first intake chamber 50 and blows it out to the second intake chamber 52 to blow air. . Further, the outside air blown into the second intake chamber 52 is blown to the front side of the outside air passage 33 through the communication port 54. The outside air blown to the front side of the outside air passage 33 flows leftward from the right end on the near side to the left end on the back side along the outer wall 2, the roof 5 and the partition plate 32 forming the outside air passage 33. Guided to and introduced.

At this time, the airflow blown and introduced into the outside air passage 33 is changed from the guide surface 40a of the air guide 40 on the near side of the outside air passage 33 to the guide surface 40 of the air guide 40 on the back side.
a, and the casing 9 located at the innermost part of the outside air passage 33
Collides with the inner surface of the outer wall 3 in order, and is guided by each guide surface 40a and the inner surface of the outer wall 3, and the wind direction is oblique to the longitudinal direction of the outside air passage 33 along the inner surface of the guide surface 40a and the outer wall 3. The direction is changed in a direction orthogonal to the outside air filter 35 and passes through the outside air filter 35. The airflow that has passed through the outside air filter 35 is cleaned of dust in the air, and
The air is guided to the rear side of the outside air passage 33 along the line 2 and is introduced into the air mixing chamber 39 behind the outside air filter 35. Then, the heat exchange air from the heat exchanger 37 and the outside air from the outside air filter 35 that have not exchanged heat are mixed in the air mixing chamber 39.

Accordingly, the wind pressure in the outside air passage 33 is dispersed not only at the inner surface position of the outermost wall 3 on the innermost side but also at the positions of the air guides 40 spaced apart in the longitudinal direction. The wind pressure in the air passage 33 becomes uniform, and the volume and speed of the wind flowing through the outside air filter 35 also become uniform at each location in the longitudinal direction. Thereby, the outside air passage 33
The air flow and the air velocity of the air flow introduced into the air mixing chamber 39 from the rear side become uniform at each point in the longitudinal direction, and the air flow from the outside air filter 35 to the downstream becomes smooth.

On the other hand, when the pressurizing fan 46 is driven, the pressurizing fan 46 mixes the room air inside the booth and the outside air outside the booth mixed in the air mixing chamber 39 with the first blowing chamber. The air is blown into the second blowing chamber 45 and blown into the second blowing chamber 45. The mixed air blown into the second blowing chamber 45 is guided downward along the lower surface of the partitioning plate 43 which is inclined downward and is introduced into the booth. Hereinafter, the same operation as described above is repeated to perform air conditioning in the booth.

As described above, in the booth air conditioner of the above embodiment, the outside air passage 33 is provided in the casing 9 in the longitudinal direction,
An outside air filter 35 is disposed in the outside air passage 33 in the longitudinal direction, and an outside air fan 53 is provided on the near side, which is one end side of the outside air passage 33 in the longitudinal direction, and the outside air filter 35 of the outside air passage 33 is provided. The outside air is blown further upstream, and a plurality of flat air guides 40 are connected to the outside air passage 3 upstream of the outside air filter 35 in the outside air passage 33.
3 are arranged in a zigzag manner at predetermined intervals along the longitudinal direction from the near side to the far side, and the innermost air guide 40 is provided at the outermost wall 3 of the casing 9 located at the innermost part of the outside air passage 33.
A guide surface 40a is formed so as to be separated from the inner surface of the air passage 40, and obliquely approach to the outside air filter 35 from one side in the longitudinal direction of the outside air passage 33 to the back side by one side surface of each air guide 40. Things.

Therefore, in the above embodiment, the outside air fan 5
3, air is blown from the front side to the back side in the longitudinal direction of the outside air passage 33 on the upstream side of the outside air filter 35 arranged in the outside air passage 33, and the airflow in the outside air passage 33 is
The guide surface 40a of the air guide 40 on the front side collides with the guide surface 40a of the air guide 40 on the back side and the inner surface of the outer wall 3 in order, and the wind direction is changed along the inner surface of the guide surface 40a and the inner surface of the outer wall 3. The air pressure in the outside air passage 33 is changed in a direction oblique to the longitudinal direction of the passage 33 toward the outside air filter 35 and passes through the outside air filter 35, so that the wind pressure in the outside air passage 33 is increased by the inner surface of the outermost wall 3 on the innermost side in the longitudinal direction. Not only at the position but also at the positions of the air guides 40 spaced apart in the longitudinal direction, the wind pressure in the outside air passage 33 becomes uniform, and the air volume and the wind speed of the airflow passing through the outside air filter 35 Is also uniform at each location in the longitudinal direction, and the flow of air from the outside air filter 33 to the downstream is smooth. Thereby, the air volume and the air velocity of the airflow introduced into the air mixing chamber 39 from the rear side of the outside air passage 33 become uniform at each location in the longitudinal direction, and the flow of air flowing downstream from the outside air filter 35 is smooth. Becomes As a result, the conditioned air from the booth air conditioner can be efficiently blown into the booth.

By the way, the air guide 40 of the above embodiment is used.
Is provided in the outside air passage 33, but is not limited to this when the present invention is implemented, and functions to efficiently blow conditioned air from the booth air conditioner into the booth. For example, a similar air guide can be provided on the swash plate 31 of the indoor air passage 34, or can be provided on both the outside air passage 33 and the indoor air passage 34. It is. In the case where the air guide is provided in the indoor air passage 34, the air flow and the wind speed of the air flow passing from the indoor air passage 34 through the circulation filter 36 to the heat exchanger 37 become uniform, and the heat exchange efficiency is improved. Is obtained.

In the above embodiment, the three air guides 40 are arranged at predetermined intervals in the longitudinal direction of the outside air passage 33. However, the number is limited as long as the number of air guides 40 is two or more. However, they may be arranged at arbitrary intervals in the longitudinal direction of the outside air passage 33. Although the guide surface 40a of each air guide 40 is oblique to the outside air filter 35 at a predetermined angle, the guide surface 40 of each air guide 40 may be oblique to the outside air filter 35 at any angle. Good. Furthermore, the air guide 4 at the innermost part of the outside air passage 33
It is also possible to dispose 0 in contact with the inner surface of the outer wall 3 without separating it from the inner surface of the outer wall 3. That is,
In the present invention, the staggered shape, which is the arrangement shape of the air guides 40, refers to a case where the air guides 40 are arranged at intervals in the longitudinal direction and alternately shifted back and forth, and are limited to the arrangement example in the above embodiment. Not something. Further, the air guide 40 has a guide surface 40 which is oblique to the outside air filter 33.
If it has a, it can be something other than a flat plate. It is possible. Alternatively, it is also possible to form the air guide into a curved plate obliquely curved toward the outside air filter 35 so that the guide surface is curved. The effect is that the smoothing of is further promoted.

In the above embodiment, the outside air passage 33 and the room air passage 34 are partitioned so that outside air outside the booth is guided by the outside air passage 33 and room air inside the booth is guided by the room air passage 34. 32, but the partition plate 3
2, the outside air and the room air inside and outside the booth and the room air may be mixed upstream of the filters 35 and 36 above the swash plate 31 and sent to the heat exchanger 37 via the filters 35 and 36. It is possible. However, when the configuration is such that the outside air passage 33 and the indoor air passage 34 are cut off by the partition plate 32, the life of the heat exchanger 37 can be extended, and the heat exchange efficiency can be improved. The effect is obtained.

Further, in the above-described embodiment, the first intake chamber 5 is provided for introducing outside air from the outside air fan 53 to the outside air passage 33.
Although the zero and second intake chambers 52 are provided, the outside air fan 53 may be provided in a single intake chamber to directly blow outside air into the outside air passage 33. Similarly, in order to introduce room air from the circulation fan 57 to the indoor air passage 34, the circulation fan 57 is provided in a single circulation chamber without providing the first circulation chamber 55 and the second circulation chamber 56. Thus, the indoor air may be directly blown into the indoor air passage 34. Similarly, the pressurizing fan 4
In order to introduce the mixed air into the booth from Step 6, the pressurized fan 46 is provided in a single blow chamber without providing the first blow chamber 42 and the second blow chamber 45, and the mixed air is directly supplied to the booth. May be blown. Alternatively, the intake port 48 can be provided at a position other than the outer wall 4 of the casing 9.

[0032]

As described above, in the booth air conditioner of the present invention, the air passage is provided in the casing in the longitudinal direction, and the filter and the heat exchanger are arranged in the air passage in the longitudinal direction. An external air fan is provided at one end in the longitudinal direction to blow air upstream of the air path filter, and a plurality of air guides are staggered along the longitudinal direction of the air path upstream of the air path filter. And each guide has a guide surface which obliquely approaches the filter from one end of the air passage in the longitudinal direction to the other end. Therefore, when the outside air fan is driven, air is blown from one end in the longitudinal direction of the air passage to the other end on the upstream side of the filter arranged in the air passage, and the air flow in the air passage is changed to one end in the longitudinal direction. From the guide surface of the air guide to the guide surface of the air guide on the other end in order, and the wind direction is changed along the guide surface in a direction oblique to the longitudinal direction of the air path toward the filter. Since the air passes through the filter and the heat exchanger, the wind pressure in the air passage is dispersed not only at the other end in the longitudinal direction but also at the positions of the air guides spaced apart in the longitudinal direction. And the wind volume and velocity of the air flow passing through the filter and the heat exchanger are also uniform at each location in the longitudinal direction, so that the flow of air going downstream from the filter is smooth. As a result, the conditioned air from the booth air conditioner can be efficiently blown into the booth.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of a booth air conditioner according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an internal configuration of a booth air conditioner according to one embodiment of the present invention.

FIG. 3 is a front sectional view of a booth air conditioner according to an embodiment of the present invention.

FIG. 4 is a sectional view of the right side of the booth air conditioner according to one embodiment of the present invention.

FIG. 5 is a cross-sectional view of the left side surface of the booth air conditioner of one embodiment of the present invention.

FIG. 6 is a plan sectional view of a booth air conditioner according to one embodiment of the present invention.

[Explanation of symbols]

 9 Casing 33 Outside air passage 34 Indoor air passage 35 Outside air filter 36 Circulation filter 40 Air guide 40a Guide surface 46 Pressurizing fan 53 Outside air fan (blowing fan) 57 Circulating fan (blowing fan)

Claims (1)

(57) [Claims] 1. A casing and the air passage provided in the longitudinal direction in the casing, filter disposed along the longitudinal direction in said air passage to be placed on the roof of the booth Oyo
And a fine heat exchanger, provided on one longitudinal end of said air passage, and the outside air fan for blowing air to the upstream side of the filter of the air passage, upstream of the filter of the air passage, the air A plurality of air guides arranged in a staggered shape along the longitudinal direction of the path, and having a guide surface obliquely approaching the filter from one end side to the other end side in the longitudinal direction of the air path toward the filter; And a pressurizing fan provided downstream of the filter in the air passage and introducing air passed through the filter and the heat exchanger from the air passage into the booth. Machine.