JP2007255848A - Air conditioner and air conditioning system using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner improved in directivity of supplied air flow, and an air conditioning system using the same. <P>SOLUTION: This air conditioner comprises a heat exchanger 3, an air blower 2, a suction opening 6 and a supply opening 7, and further comprises an air flow diffusion reducing device 10 for reducing the diffusion of air flow supplied from the supply opening 7. According to this air conditioner, the diffusion of supplied air flow is prevented and the directivity can be improved. Further energy can be saved by preventing the air-conditioning in an unnecessary space. Further as it is not necessary to increase a supply speed to secure a longitudinal coverage, the distribution of indoor temperature can be improved with a silent operation. Further by using the air conditioner constituted as the above, a ductless system for supplying the conditioned air to a circulation device can be constructed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an air conditioner and an air conditioner system using the same, and more particularly to an air conditioner that improves the directivity of a blown air flow from an outlet and an air conditioner system using the same.

  Conventionally, in an air conditioner, a vortex is formed in the blown airflow, which causes the blown airflow to spread to the surroundings, surrounding air is entrained in the blown airflow, and speed fluctuation at the center of the blown airflow increases. The airflow was diffused. Due to this, in the conventional air conditioner, the reaching distance of the blown airflow is reduced, and an effective circulating airflow may not be formed in the room. In such a case, the difference between the upper and lower temperature in the air-conditioned room is increased, and the temperature unevenness on the plane is increased, thereby causing a problem that a comfortable living environment cannot be formed. In order to solve such a problem, a method of increasing the reach distance may be employed. The method is generally to increase the fan speed and increase the blown air speed. However, when the fan rotational speed is increased, there is a problem that the amount of air to be diffused and the amount of air to be entrained increase, the power consumption of the air conditioner increases, and the blowing sound increases to increase the noise. Then, the method of adjusting the area of a blower outlet is considered like patent document 1 and patent document 2. As shown in FIG. That is, in Patent Document 1, the blown air speed is made constant so as to make the reach distance constant, the rotational speed of the motor for the blower is measured, the blown air amount is calculated from the measured value, and the calculated blowout is calculated. The opening area of the air outlet is controlled to match the air volume. Further, Patent Document 2 increases the reachable distance by increasing the blown wind speed, and gradually increases the airflow speed using a wind speed control member that gradually changes the area of the blowout flow path.

On the other hand, the following is known as a fluid control technique applicable to an air curtain or the like. Patent Document 3 discloses a technique for forming a fence-like vortex structure by giving velocity fluctuation (disturbance) having a distribution that changes in the longitudinal direction of the opening to a fluid ejected from an opening such as a nozzle. Are listed. Further, Patent Document 4 forms a stable fluid film by superimposing a cross flow accompanied by a flip-flop phenomenon on the slit fluid jet and absorbing the fluctuation velocity component energy of the slit fluid jet into the vibration component of the flip-flop cross flow. What to do is described. Further, in Patent Document 5, the air outlet is formed of an inner cylinder and an outer cylinder, and the speed ratio and the dimensional ratio between the main ventilation that passes through the inner cylinder and the auxiliary ventilation between the outer cylinder and the inner cylinder are constant. In this range, the amount of entrainment from ambient air is reduced to extend the reach distance.
Japanese Patent Laid-Open No. 5-187707 Japanese Patent Laid-Open No. 8-193737 JP 2005-24123 A JP 2000-130411 A JP 2000-280739 A

  The air conditioners described in Patent Document 1 and Patent Document 2 described above have the same idea as that for ensuring the reach distance by increasing the flow velocity of the blown airflow. Therefore, when the blown airflow is increased, the instability inside the blown airflow increases, and there is a problem that the membrane fluid of the blown airflow is easily broken. For this reason, increasing the blown airflow does not solve the problem that the blown airflow diffuses even if the reach distance is extended. Therefore, the air conditioners described in Patent Documents 1 and 2 air-condition unnecessary spaces, and there is still room for improvement in terms of reducing the power consumption of the air conditioners and reducing noise. In contrast, the fluid control techniques described in Patent Documents 3 to 5 are techniques for improving directivity to reduce the entrainment of ambient air, but have not yet been applied to air conditioners.

  The present invention has been made paying attention to such problems existing in the prior art. That is, this invention aims at providing the air conditioner which improved the directivity of blowing airflow and improved the reach | attainment distance of blowing airflow by applying the fluid control technique of patent documents 3-5. To do.

  The present invention has been made in view of the above problems. The air conditioner according to the present invention is an air conditioner including a heat exchanger, a blower, a suction port, and a blowout port, and includes an airflow diffusion reduction device that reduces diffusion of a blown airflow blown from the blowout port. It is characterized by. According to the air conditioner of the present invention, the diffusion of the blown airflow is prevented and the directivity is improved. This can save energy by avoiding unnecessary air conditioning in the space. Moreover, since the reachable distance of the blown airflow is increased by improving the directivity, it is not necessary to increase the blown wind speed in order to secure the reachable distance. Therefore, it is possible to improve the indoor temperature distribution while maintaining a quiet air blowing operation.

  As the airflow diffusion reducing device, a device that imparts a fence vortex to the blown airflow can be employed. In this case, directivity can be imparted as necessary by turning on and off a device that imparts a fence vortex to the blown airflow.

  Moreover, the structure which accompanies the fluid jet accompanying a flip-flop phenomenon can also be employ | adopted as both sides of a blowing airflow as this airflow diffusion reduction apparatus. The airflow diffusion reducing device in this case relates to the structure of the air outlet, and there is no need to provide other special components in the air conditioner body, and the air outlet according to the present invention is used instead of the conventional air outlet. Can be easily adopted. Therefore, in the case of an air conditioner using this airflow diffusion reduction device, the air conditioner is used in the case where a blowout port with a variable blowing direction is adopted, or in the case where the blowout port is separated from the air conditioner body. There are few elements related to the main body, and it is relatively easy to apply to existing models.

  Moreover, the structure of the blower outlet provided with the outer cylinder which the outer shape of the blower outlet exhibits a quadrangular frustum shape and the outer cylinder which surrounds the said inner cylinder with a square cross section can also be employ | adopted as this airflow diffusion reduction apparatus. Therefore, even in the case of an air conditioner using this airflow diffusion reduction device, there is no need to provide other special components in the air conditioner body, and the air outlet according to the present invention is employed instead of the conventional air outlet. be able to. In addition, when adopting a blowout outlet with variable outlet direction, or when the blowout outlet is separated from the air conditioner body, there are few elements related to the air conditioner body, and it can be applied to existing models. It is relatively easy.

  In addition, the above-described device for applying a fence vortex to the blown airflow includes a plurality of openings formed along both sides in the longitudinal direction of the outlet, and a predetermined number of openings, for example, every other one connected in parallel. It shall be equipped with two parallel air circuits and a pressure fluctuation device that applies pressure fluctuations with distributions that vary temporally and periodically with respect to openings of different systems connected to the parallel air circuits. You can also. Moreover, since many opening is connected not by an independent circuit but by the parallel circuit, a pressure fluctuation apparatus can be shared. Further, if a mechanism that fluctuates pressure symmetrically on both sides of the membrane using a piezoelectric vibrating membrane is used as the pressure fluctuation device, a single pressure fluctuation device can be used.

  Further, the air conditioner is provided with a heat exchanger, a blower, and a suction port, and an air conditioner main body having a duct connection port on the blowout side of the blower, a duct connected to the air conditioner main body, It can also be comprised from the blower outlet chamber provided with the blower outlet connected to the front-end | tip of a duct. The air conditioner having such a configuration can provide an air conditioner suitable for spot air conditioning that requires directivity.

  Moreover, said air conditioner can be comprised as an air conditioner for refrigeration containers. In the case of a refrigerated container, conventionally, an air conditioner is attached to one side wall with a small width direction located on one end side in the longitudinal direction of the refrigerated container. There was a problem. For this reason, although it was difficult to circulate cold air in the whole area | region, if the air conditioner of this invention is used, since cold air reach | attainment distance will be extended, internal temperature distribution can be improved.

  In addition, as an application of the air conditioner, there are a circulation device including a blowout port, a suction port, and a circulation fan, and an air conditioner including a flow diffusion reduction device that reduces the diffusion of the blown airflow blown out from the blowout port. And this air conditioner can form the air conditioning system arrange | positioned so that blowing air may be blown off in the horizontal direction toward the suction inlet of the said circulation device in the ceiling back or the ceiling lower surface side. According to this air conditioning system, even if a duct is not connected between the air conditioner and the circulation device, most of the airflow blown from the air conditioner can be sucked into the circulation device. Therefore, conventionally, a duct is attached between the air conditioner and the circulation device. This air conditioning system eliminates the need for a duct, which can contribute to cost reduction of the air conditioning system.

  According to the air conditioner according to the present invention, the diffusion of the blown airflow is prevented and the directivity is improved. This can save energy by avoiding unnecessary air conditioning in the space. Moreover, since the reach distance of the blown airflow increases by improving the directivity, there is no need to increase the blown air speed to secure the reach distance, and the indoor temperature distribution can be improved while maintaining quiet operation. .

(Embodiment 1)
First, the air conditioner according to each embodiment 1 of the present invention will be described with reference to FIGS.

  1 is a cross-sectional view of an air conditioner according to Embodiment 1. FIG. As shown in this figure, the air conditioner according to Embodiment 1 is an indoor unit of a ceiling-embedded air conditioner formed in a box shape. A centrifugal fan (in this case, a turbo fan) 2 as an indoor fan is disposed in the main body casing 1, a heat exchanger 3 for cooling or heating indoor air is disposed around the centrifugal fan 2, and a drain pan 4 is disposed below the heat exchanger 3. Is arranged. A decorative panel 5 exposed to the room is attached to the lower surface of the main casing 1. The central portion of the decorative panel 5 serves as a suction port 6, and air outlets 7 are formed around four sides thereof. The blower outlet 7 is provided with a wind direction plate 8 in the longitudinal direction in the central part of the blowout outlet for making the blowout direction of the blown airflow variable.

  The air conditioner according to the present embodiment is equipped with an airflow diffusion reduction device 10. The airflow diffusion reduction device 10 is a device that imparts a fence vortex to a blown airflow, and includes a disturbance forming member 11 and a pressure fluctuation device 21. The disturbance forming member 11 gives the blown air flow a speed fluctuation that is periodic in time with respect to the blown air flow and whose phase difference has a distribution in the longitudinal direction of the blowout port 7. Specifically, the disturbance forming member 11 performs “suction / blowout” air fluctuation in the opening 12 provided on the side of the blown airflow. Further, the pressure fluctuation device 21 applies a pressure fluctuation that changes temporally and periodically to the opening 12 of the disturbance forming member 11 in order to cause the air pressure fluctuation of “suction / blowing” in the opening 12. Is.

  As shown in the schematic configuration diagram of FIG. 2, the disturbance forming member 11 is formed in a thin rectangular parallelepiped provided at the side edge of the air outlet 7, and one piece is formed on each side edge in the longitudinal direction of the air outlet 7. Has been placed. A large number of small rectangular openings 12 are arranged in a row on the side surface 11a of the rectangular parallelepiped on the outlet passage side. Further, as shown in the schematic air circuit diagram of FIG. 3, the disturbance forming member 11 is divided into groups of every other opening 12, and a parallel air circuit 13 for connecting the openings 12 in each group in parallel. , 14 are formed, and each of the parallel air circuits 13, 14 is provided with one communication port 15, 16. In FIG. 3, one is shown by a solid line and the other is shown by a broken line so that the two parallel air circuits can be clearly distinguished. In addition, although this grouping is made every other in the example of illustration, when the magnitude | size of the opening 12 is small and a space | interval is narrow, it can also set to every predetermined number, such as every two.

  The communication ports 15 and 16 are connected in two systems by flexible tubes 22 and 23 made of a flexible material to a pressure fluctuation device 21 for imparting “suction / blowout” air fluctuation to the opening 12. As schematically shown in FIG. 2, the pressure fluctuation device 21 is provided with a membrane-like vibration member 25 that partitions the inside of the cylindrical container 24 so as to be divided into two, and this membrane-like vibration member 25. Is vibrated in the axial direction of the container 24 (solid arrow in the figure), so that the pressures in the spaces 26 and 27 on both sides in the container 24 are varied in a reactive manner.

  In response to the fluctuation of the spaces 26 and 27 of the pressure fluctuation device 21 as described above, the air fluctuation of “suction / blowout” is given to the opening 12 and the blown airflow is disturbed. Due to this disturbance, a fence vortex is formed outside the blowing airflow. The fence vortex has an intersecting structure in which the vortex structure can be expressed in the form of a mesh or a houndstooth, and means a vortex structure having a fence-like shape. Moreover, the formation of such a fence vortex suppresses the spread of the blown airflow and the entrainment of the surrounding air. When a membrane-like vibrating member 25 such as a piezoelectric membrane diaphragm is used, the pressure fluctuation device 21 can be configured with a simple configuration.

According to the air conditioner of Embodiment 1 configured as described above, the following operational effects can be achieved.
(1) Since the air conditioner according to the present embodiment is equipped with the airflow diffusion reduction device, the spread of the blown airflow and the entrainment of the surrounding fluid are suppressed, and the directivity is improved. Moreover, if a blowing direction is changed and adjusted with the wind direction board arrange | positioned at the blower outlet, the blowing airflow with directionality can be blown out toward required space. Thereby, it is possible to save energy by avoiding unnecessary air conditioning in the space. In particular, if the wind direction plate is linked with the sensor, the blown airflow can be concentrated in a high load zone or a zone where people gather, and the energy saving effect can be further improved.

  (2) Since the reach distance of the blown airflow increases due to the improved directivity, there is no need to increase the blown air speed in order to secure the reach distance, and the indoor temperature distribution should be improved while performing quiet operation. Can do.

  (3) In a conventional air conditioner, when blown in the horizontal direction, the blown airflow flows over the ceiling surface due to the Coanda effect, and the ceiling surface is easily contaminated with dust. However, in the air conditioner of the present embodiment, the Coanda effect that flows so as to crawl the ceiling surface is suppressed because the directionality of the blown airflow is strong. Therefore, the dirt on the ceiling is also reduced.

  (4) Since a device that imparts fence vortices to the blown airflow is adopted as the airflow diffusion reducing device, directivity is imparted as necessary by turning on and off the pressure fluctuation device 21 that imparts fence vortices to the blown airflow. be able to. In addition, when the airflow diffusion reducing device is operated, the air is blown out with the blowing contour S1 of the solid line in FIG. 1, but when the airflow diffusion reducing device is not operated, the blowout contour S2 is the same as the conventional one. .

  (5) The airflow diffusion reduction device 10 includes a large number of openings 12 formed along both longitudinal sides of the air outlet 7, and two parallel air circuits 13 and 14 that connect the openings 12 in parallel every predetermined number. A pressure fluctuation device 21 is provided for applying pressure fluctuations having a distribution that changes temporally and periodically with respect to the openings 12 of different systems connected to the parallel air circuits 13 and 14. Therefore, the pressure fluctuation device 21 can be shared for each opening 12. Further, if a mechanism that varies the pressure symmetrically on both sides of the membrane using the membrane vibrating member 25 is used as the pressure fluctuation device 21, a single pressure fluctuation device can be used.

(Embodiment 2)
The air conditioner according to the second embodiment is configured such that the blowout outlet related parts in the first embodiment are unitized and the wind direction can be easily changed by rotating the entire unit. The second embodiment will be described below with reference to FIG. FIG. 4 is a cross-sectional view around the air outlet of the air conditioner according to Embodiment 2, and FIG. 4 (a) shows a state in which the blowing direction is directed downward by approximately 45 degrees. FIG. 4B is a state diagram in which the blowing direction is made closer to the horizontal direction than the state of FIG. In these drawings, the same elements as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The blower outlet unit 30 has a blower outlet 31 formed at the center. Inside the air outlet 31, a wind direction plate 32 is provided for minute change of the wind direction. Disturbing members 34 similar to the disturbing member 11 of the first embodiment are disposed at the mouth edges of both side walls 33 in the longitudinal direction of the air outlet 31. In addition, one pressure fluctuation device 36 is provided in a space 35 that is a back portion of the disturbance forming member 34 outside the both side walls 33. The space 35 is closed by a lid member 35a. This pressure fluctuation device 36 is connected to the communication port 37 of the disturbance forming member 34 attached to the blowing side of the both side walls 33 by flexible tubes 38 and 39 made of a flexible material. And the surface of the frame member 40 which integrates these is made into the shape which forms a part of cylindrical surface. On the other hand, the air outlet unit 30 is accommodated in a cylindrical receiving member 41, and the air direction of the air outlet unit 30 can be changed in the vertical direction within the cylindrical receiving member 41. In addition, the structure other than the periphery of the outlet 31 is the same as that of the first embodiment.

  The airflow diffusion reducing device in this embodiment includes the disturbance forming member 34, the pressure fluctuation device 36, the flexible tubes 38 and 39, and the like. When the airflow diffusion reducing device is operated, the air is blown out with the solid blowout contour S1, but when the airflow diffusion reducing device is not operated, the blowout contour S2 is the same as the conventional one.

  According to the air conditioner according to Embodiment 2 configured as described above, the same effects as those of Embodiment 1 can be achieved. Moreover, in this Embodiment 2, since the blower outlet unit 30 is rotated, there is no possibility of reducing the airflow diffusion preventing effect when the wind direction is changed. Moreover, since the blower outlet 31 and the airflow diffusion reduction device are integrated, a mechanism for rotating the blower outlet unit 30 is simplified. Furthermore, since the blowout unit 30 can be assembled separately from the decorative panel 5, the number of assembling steps can be reduced.

(Embodiment 3)
The third embodiment is a type of air conditioner in which the air conditioner main body 51 is concealed and installed in an appropriate location that is not exposed to the room, and the outlet unit 52 is installed in an appropriate location in the air conditioning room, so-called built-in air. The present invention relates to a conditioner, and this air conditioner is provided with an airflow diffusion reduction device. This will be described below with reference to FIG. FIG. 5 is a drawing of an air conditioner according to Embodiment 3, wherein FIG. 5 (a) is a perspective view in an assembled state, and FIG. 5 (b) is an air outlet unit of the air conditioner.

  As shown in FIG. 5, the air conditioner main body 51 of the air conditioner according to Embodiment 3 is configured as a duct connection type that is concealed and installed in an appropriate place, and a suction panel 51a is attached below. It has been. An air outlet unit 52 is connected to the air conditioner main body 51 by a flexible duct 54. The blower outlet unit 52 is installed in the appropriate place of an air-conditioning room, Comprising: As shown in FIG.5 (b), the blower outlet 53 is provided in 2 rows.

  The air outlet unit 52 is equipped with an airflow diffusion reducing device. This air flow diffusing device is the same as that of the first embodiment, and includes disturbance forming members 55 and 56 having the same functions as those of the first embodiment. The disturbance forming member 55 is attached to both side edges in the longitudinal direction of each of the two outlets separated into two. Moreover, since the disturbance formation member 56 is attached between the blower outlets separated into two, and faces both the blower outlets, it is formed so that it may open on both surfaces. Although not shown, a pressure fluctuation device connected to the disturbance forming members 55 and 56 is installed outside the air flow passage such as a side portion or an upper portion of the air outlet unit 52 in the longitudinal direction, and is made of a flexible material. It is connected to the disturbance forming members 55 and 56 by tubes.

  Since the air conditioner of Embodiment 3 is configured as described above, the same effects as those of Embodiment 1 can be achieved. Moreover, according to this air conditioner, since the outlet unit 52 is connected to the air conditioner main body 51 by the flexible duct 54 and attached to an appropriate place, the direct airflow directivity is required for spot air conditioning. An air conditioner suitable for the above can be provided.

(Embodiment 4)
The fourth embodiment relates to an air conditioner for a refrigeration container equipped with an airflow diffusion reduction device. FIG. 6 is an explanatory view of an air conditioner for a refrigeration container, and FIG. 6 (a) is an arrangement state diagram of the air conditioner in the refrigeration container. FIG. 2B is a schematic structural diagram of the air conditioner.

  In general, since the refrigeration container 60 is transported by a ship, a vehicle, a truck, or the like, the refrigeration container 60 is formed in a rectangular parallelepiped and has a long side that is considerably longer than a short side. For this reason, the air conditioner is composed of a condensing unit 61 and an indoor unit 62 installed above the front side of the condensing unit 61. As shown in the sectional view of FIG. Has been placed. For this reason, there exists a problem that the cold wind from the blower outlet 66 from the indoor unit 62 cannot reach a long side opposing wall easily. The air conditioner for a refrigeration container according to Embodiment 4 solves such a problem, and improves the directivity of the blown airflow from the air outlet provided on the front surface. Cold air is blown to the opposing wall facing the machine to improve the temperature distribution in the warehouse.

  As shown in FIG. 6 (b), the indoor unit 62 has a suction port 63 for sucking the air in the cabinet on the lower surface, houses a blower 64, a heat exchanger 65, and the like inside, and has a blower outlet (or jet) on the front surface. Nozzle) 66 is provided. A disturbance forming member 67 constituting an airflow diffusion reducing device is attached to the air outlet 66. In addition, illustration is abbreviate | omitted about the flexible tube which connects the pressure fluctuation apparatus which comprises an airflow diffusion reduction apparatus, and a pressure fluctuation apparatus and a disturbance formation member. According to the air conditioner of the present embodiment having the above configuration, the directivity of the blown airflow is improved, the reach distance of the blown airflow is increased, and the internal temperature distribution is improved.

(Embodiment 5)
Next, a fifth embodiment will be described with reference to FIGS. 7 is an installation example diagram of the air conditioning system according to Embodiment 5, FIG. 8 is another installation example diagram of the air conditioner, and FIG. 9 is a conventional air corresponding to the air conditioner. FIG. 10 is a diagram of an air conditioning system, and FIG. 10 is an air flow diagram when a duct is removed in a conventional air conditioning system.

  The air conditioning system of FIG. 9 shows a conventional air conditioning system corresponding to the present embodiment, and includes an air conditioner main body 71a and a circulation device 71b that circulates an airflow in the room, and uses a duct to It is an air conditioning system that supplies air that has been air-conditioned by the conditioner body 71a to the circulation device 71b. On the other hand, the air conditioning system of the present embodiment applies the air flow diffusion reduction device of the first embodiment to the air conditioner main body 71a, so that the duct 71c between the air conditioner main body 71a and the circulation device 71b. Is a ductless air conditioning system.

  That is, as shown in FIG. 7, the air conditioning system according to the present embodiment includes an air conditioner main body 71 and a circulation device 77 for receiving the air blown from the air conditioner main body 71 and circulating it into the room. . FIG. 7 shows an example of installation of this air conditioning system. The air conditioner main body 71 is installed at an appropriate location such as the center of the ceiling of the air conditioning room 70, and the circulation device 77 is arranged at the corner of the ceiling. Has been. The air conditioner main body 71 includes an indoor air inlet 72, a blower 73, a heat exchanger 74, a duct connection outlet 75, and the like. The air conditioner main body 71 is provided with an airflow diffusion reducing device, and a disturbance forming member 76 constituting the airflow diffusion reducing device is attached to the air outlet 75. Thus, the blowing airflow from the blower outlet 75 of the air conditioner main body 71 according to Embodiment 1 is configured to obtain good directivity. The circulation device 77 is arranged so as to be able to catch and suck the airflow from the air outlet 75 of the air conditioner main body 71, and includes a suction port 77a, a circulation fan 78, and a gas outlet 77b. ing.

  In the air conditioning system according to the present embodiment, the directivity of the blown airflow of the air conditioner main body 71 is greatly improved, and thus ductless is possible. In this case, as shown in FIG. 10, the blown air flow blown out from the air outlet of the air conditioner main body 71a as indicated by the white arrow diffuses as indicated by the solid line arrow. Therefore, since a lot of ambient air is mixed in the air sucked into the circulation device 71b, the energy efficiency is lowered and it is impossible to put it to practical use.

  The air conditioner according to the present embodiment is not limited to the one installed on the back of the ceiling as described above, but as shown in another installation example of FIG. The main body 71 and the circulation device 77 are arranged, and the space between them is made ductless. Also in this case, air that has been air-conditioned by the air conditioner body 71 is drawn into the circulation device 77 from the air conditioner body 71. In this case, all of the air blown out from the air conditioner main body 71 may not be sucked into the circulation device 77. However, the blown air that has not been sucked in is supplied to the air conditioning in the air-conditioning room. Although it is not a circulating airflow, it is not completely wasted.

(Embodiment 6)
Embodiment 6 relates to a ceiling-embedded air conditioner that employs a configuration in which a fluid jet accompanied by a flip-flop phenomenon is accompanied on both sides of a blown airflow at an outlet as an airflow diffusion reduction device. FIG. 11 is a cross-sectional view showing the overall configuration of a ceiling-embedded air conditioner according to Embodiment 6 in which such a mechanism is provided on the side wall of the air outlet, and FIG. 12 is a flow path for generating a flip-flop phenomenon. FIG.

  The ceiling-embedded air conditioner according to Embodiment 6 is the same as the air conditioner of Embodiment 1 as shown in FIG. That is, this air conditioner is an indoor unit of a ceiling-embedded air conditioner formed in a box shape. A centrifugal fan (in this case, a turbo fan) 82 as an indoor fan is disposed in the main body casing 81, a heat exchanger 83 for cooling or heating indoor air is disposed around the centrifugal fan 82, and a drain pan 84 is disposed below the heat exchanger 83. Is arranged. Further, a decorative panel 85 exposed to the room is attached to the lower surface of the main body casing 81, a suction port 86 is formed at the center of the decorative panel 85, and an air outlet 87 is formed on the four sides of the suction port 86.

  A flow path for generating a flip-flop phenomenon, that is, a flow path having a mesh structure having X-shaped intersecting grooves is formed on the inner surfaces of both side walls 88 in the longitudinal direction forming the air outlet 87. As shown in FIG. 12, this flow path has a plurality of grooves 1a, 1b, 1c... 1n and grooves 2a, 2b, 2c. Is provided. The grooves 1a, 1b, 1c,..., 1n are provided at equal intervals, and the grooves 2a, 2b, 2c,. The fluid supplied at the fluid inlet E1 is provided to join at the outlet E2. Moreover, it is desirable that the length to the reattachment point of the separation vortex generated behind the intersection is equal to or longer than the length of one piece of the rhombic protrusion formed by the X-shaped groove. In such an X-shaped groove, a flip-flop phenomenon that causes periodic vibration in the radial direction of the flow occurs at the intersection. This flip-flop phenomenon is a mechanism that absorbs the fluctuation speed component included in the blown airflow, and converts this speed fluctuation component into a periodic vibration in the radial direction of the flow at the intersection. Then, the cross flow accompanying the flip-flop phenomenon is superimposed on the blown airflow at the outlet, and the velocity fluctuation component on the outer surface of the blown airflow is absorbed by the crossflow accompanying the flip-flop phenomenon, thereby forming a stable blown airflow. . As a result, a highly directional blown airflow is obtained. In FIG. 11, the conventional blown air flow is indicated by a broken blowout contour S <b> 2, but in the present embodiment, a configuration in which a fluid jet accompanied by a flip-flop phenomenon is associated with the blowout port is adopted, so that a solid blowout contour is used. It becomes a blowing airflow like S1.

  According to the air conditioner according to Embodiment 6 configured as described above, a highly directional blown airflow is obtained, and therefore, the same effects as (1) to (3) in Embodiment 1 are achieved. Can do. In addition, since the airflow diffusion reduction device of this embodiment has no driving portion, it can be easily formed not only on the side wall of the air outlet but also on the movable wind direction plate.

(Embodiment 7)
The seventh embodiment relates to an air conditioner that employs an air outlet that forms a main ventilation path and a sub ventilation path as an airflow diffusion reduction device. 13 is a perspective view around the air outlet of the air conditioner according to Embodiment 7, FIG. 14 is a vertical sectional view around the air outlet of the air conditioner, and FIG. 15 is a horizontal cross section of the air conditioner. FIG.

  The air conditioner according to Embodiment 7 is applied as an air conditioner for a refrigeration container according to Embodiment 4, and employs an air outlet that forms a main ventilation path and a sub ventilation path. . As shown in FIGS. 13 to 15, the air conditioner houses a blower 92, a heat exchanger 93, and the like in a main body casing 91, and includes a blower outlet 94 that blows out air-conditioned air on the front surface. . Further, a rectifying net 95 is provided at the inlet of the air outlet. The rectifying net 95 is a resin mesh having a mesh size of 0.7 mm × 0.7 mm.

  The air outlet 94 includes an inner cylinder 96 and an outer cylinder 97 as shown in FIGS. The inside of the inner cylinder 96 is referred to as a main vent and the inside of the outer cylinder 97 excluding the inside of the inner cylinder 96 is referred to as a sub vent. And this blower outlet 94 acts to reduce the relative speed difference between the sub blowout flow blown out from the sub vent and the ambient air, and to reduce the amount of entrainment and extend the reach distance of the main blowout flow. Moreover, this blower outlet 94 is formed in the following dimensions.

  First, the velocity of the main outlet flow passing through the inlet of the main vent is V11, the velocity of the main outlet flow passing through the outlet of the main vent is V12, and the velocity of the auxiliary outlet flow passing through the inlet of the auxiliary vent is V21, Assuming that the velocity of the sub-blowing flow passing through the outlet of the sub-ventilation port is V22, the inlet area and the outlet area at the ventilating port are set so that V21 / V11 = V22 / V12 = 0.45 to 0.55. Further, when the height of the main vent is ta, the width is tb, the height of the entire outlet is Ta, and the width is Tb, ta / Ta = tb / Tb = 0.21 to 0.28. It is preferable to be in the range. The length L is preferably 30 mm to 70 mm.

  In the air conditioner formed in this way, the relative speed difference between the sub-blowing flow blown out from the sub-flow vent and the surrounding air is reduced, the amount of entrainment is reduced, and the main blow-off flow blown out from the main vent is reduced. The reach can be extended. Therefore, the directivity of the blown airflow can be increased as in the case of the first embodiment. In addition, since the reach of the blown airflow increases due to the improved directivity, there is no need to increase the blown air speed to secure the reach, and the internal temperature distribution is improved while suppressing wasteful energy loss. can do.

The present invention can be modified as follows in the embodiment described above.
(1) In the third or fifth embodiment, the air outlet as the airflow diffusion reduction device of the sixth or seventh embodiment may be adopted. Since the airflow diffusion reduction device of the sixth embodiment and the seventh embodiment does not have a driving part and the airflow diffusion reduction device can be added with a single outlet structure, as in the air conditioner of the third or fifth embodiment. This is suitable when the air conditioner main body and the air outlet are not integrally formed.

(2) In the fourth embodiment, the air outlet as the air flow diffusion reduction device of the seventh embodiment can be adopted.
(3) The airflow diffusion reduction device according to each embodiment is an air conditioner other than the air conditioners listed above, for example, a ceiling-suspended air conditioner, a wall-mounted air conditioner, a floor-standing air conditioner, etc. It can be applied to various types of air conditioners.

  (4) In the sixth embodiment, the air introduced into the flow path for generating the flip-flop phenomenon is air blown from a blower installed in the air conditioner body, but another dedicated fan is used as the air supply source. It may be used as

  The air conditioner according to the present invention can be applied to various types of air conditioners for home use and business use.

It is sectional drawing which shows the whole structure of the air conditioner which concerns on Embodiment 1 of this invention. It is a schematic block diagram of the airflow diffusion reduction apparatus in the same embodiment. It is a schematic air circuit diagram of the airflow diffusion reduction device. It is sectional drawing around the blower outlet of the air conditioner which concerns on Embodiment 2, (a) is a state which the blowing direction has faced about 45 degree | times downward, (b) is a state of (a). It is the state figure which made the blowing direction close to the horizontal direction compared with the state. It is drawing of the air conditioner which concerns on Embodiment 3, Comprising: (a) is a perspective view in an assembly state, (b) is the blower outlet unit of the air conditioner. It is explanatory drawing of the air conditioner for refrigeration containers, (a) is the arrangement | positioning condition figure of the air conditioner in a refrigeration container, (b) is a schematic structure figure of the air conditioner. FIG. 10 is an installation example diagram of an air-conditioning system according to Embodiment 5. It is another example of installation of the air conditioner. It is the conventional air conditioning system figure corresponding to the air conditioner. It is an air flow figure at the time of removing a duct in the conventional air conditioning system. It is sectional drawing which shows the whole structure of the ceiling embedded type air conditioner concerning Embodiment 6. FIG. It is the top view which showed the structure of the flow path which generates the flip-flop phenomenon in the air conditioner. It is a perspective view around the blower outlet of the air conditioner of Embodiment 7. It is a vertical sectional view around the air outlet of the air conditioner. It is a horizontal sectional view of the air conditioner.

Explanation of symbols

  3, 65, 74, 83, 93 ... Heat exchanger, 6, 63, 71a, 86 ... Suction port, 7, 31, 53, 63, 66, 75, 87, 94 ... Air outlet, 10 ... Airflow diffusion reduction device , 12 ... Opening, 13 ... Parallel air circuit, 21, 36 ... Pressure fluctuation device, 51, 71 ... Air conditioner body, 64, 73, 92 ... Blower, 71c ... Duct, 77 ... Circulation device, 96 ... Inner cylinder, 97 ... Outer cylinder.

Claims (8)

  An air conditioner including a heat exchanger, a blower, a suction port, and a blowout port, and including an airflow diffusion reduction device that reduces diffusion of a blown airflow blown from the blowout port.   The air conditioner according to claim 1, wherein the airflow diffusion reducing device is a device that imparts a fence vortex to the blown airflow.   The air conditioner according to claim 1, wherein the airflow diffusion reduction device is configured to accompany a fluid jet accompanied by a flip-flop phenomenon on both sides of the blown airflow.   The airflow diffusion reducing device has a structure of an air outlet including an inner cylinder having an outer shape of a quadrangular frustum and an outer cylinder having a quadrangular cross section and surrounding the inner cylinder. The air conditioner described.   The above-described device for applying a fence vortex to the blown airflow includes a large number of openings formed along both longitudinal sides of the air outlet, two parallel air circuits that connect the openings in parallel every predetermined number, and two The air conditioner according to claim 2, further comprising a pressure fluctuation device that applies a pressure fluctuation that changes temporally and periodically with respect to the openings of different systems connected to the parallel air circuit.   The air conditioner according to any one of claims 1 to 5, comprising a heat exchanger, a blower, and a suction port, and an air conditioner main body having a duct connection port on a blower side of the blower, and the air conditioner main body An air conditioner comprising: a duct connected to the air outlet; and an air outlet chamber having an air outlet connected to the tip of the duct.   The air conditioner according to claim 1 is an air conditioner for a refrigeration container.   The air conditioner includes a circulation device including an air outlet, a suction port, and a circulation fan, and an air conditioner including an air flow diffusion reduction device that reduces diffusion of an air flow blown out from the air outlet. Or it is arrange | positioned so that blowing air may be blown off in the horizontal direction toward the inlet of the said circulation device in the ceiling lower surface side, The air conditioning system characterized by the above-mentioned.

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