JP2023074837A - Task air conditioning system and method thereof using heat source integrated type air conditioner - Google Patents

Abstract

To provide an air conditioning system that has made a partition enclosing space into a task region.SOLUTION: An air conditioner in which an air conditioning unit and a heat source unit are integrated is arranged in a partition enclosing space. In the air conditioning unit, a supply air outlet is arranged on the front surface, an air return suction port is arranged on the back surface, and a heat exchanger part is arranged in between. The heat source unit and an air intake/exhaust duct cover for covering the heat source unit are disposed on the heat exchanger part. The air intake/exhaust duct cover extends from a task region to an ambient region, and positions an air intake/exhaust opening at a part immediately above away from the task region. A region for attaching an air return duct cover to the air return suction port is selected from the task region, the ambient region, and the intermediate region so as to achieve a task air conditioning system capable of coping with any air conditioning mode of an energy saving mode, a ventilation mode, and an energy saving intermediate mode including ventilation.SELECTED DRAWING: Figure 18

Description

The present invention relates to a task/ambient air conditioning system combining a heat source integrated air conditioner and a screen partition. In particular, the present invention relates to an air conditioning system in which a heat source integrated air conditioner is arranged in a space surrounded by a partition provided in a part of a large room with a high ceiling, and the surrounding space is used as a task area.

A heat source integrated air conditioner is one type of air conditioning system in which a heat source unit corresponding to an outdoor unit and an air conditioning unit corresponding to an indoor unit are integrated, and both units are fluidly connected with a heat transfer medium of refrigerant or water and mounted on a frame or a truck. is one. This device is a type of package type air conditioner for facilities and is used as a movable spot air conditioner. It is mainly used for local air conditioning in large rooms with high ceilings such as factories and distribution warehouses, and is a well-known device that provides a comfortable work environment and maintains equipment or articles.

Conventionally used mobile or screen-type spot air conditioners blow cool or hot air toward the target area from the upper front of the air conditioning unit in contact with the air conditioning target area or from the lower side near the floor surface, and then the air conditioning unit Many structures have return air vents at the top, bottom, or side of the front. The air-conditioning load at this time is handled on the back side of the air conditioner, that is, on the back surface of the air-conditioning target area, or on the upper surface in contact with this air conditioner. However, in the space surrounding the spot air conditioner, there is no barrier between the area to be air-conditioned and the area not to be air-conditioned, so the air from both areas mixes. This mixture of target/non-target area air makes it difficult to control the temperature of the air-conditioned area, which is one of the reasons why the air-conditioning efficiency of the spot air-conditioning apparatus does not improve.

By the way, partitions are used as simple screens for partitioning the floor surface of a large room in a building into small compartments. There are high partitions that reach up to the ceiling, but low partitions with a height of 1200mm to 2000mm made of plastic, which is thinner and lighter than steel and aluminum, are also used for simple division of the room.

The enclosed space of the low partition consists of a lower area with no ventilation with the bottom as the floor and an open upper area that is in contact with the large space that extends to the entire large room. Techniques for saving energy are known. For example, it is common to divide a room into small compartments with screens and blow air directly from floor ducts for each compartment, to blow air through screens or desks, or to blow airflow from ceiling ducts to the small compartments.

The method of using ceiling ducts and floor ducts is a large-scale air conditioning system related to the structure of the building. It is a simpler facility than the air-conditioning facility installed in the building itself as described above. That is, this method reduces the target area and is suitable for low cost and energy saving with a small equipment investment. In addition, in a large space such as a large-scale event venue with an atrium structure, if it is possible to create an air-conditioned space surrounded by low partitions, it will have a high utility value and play a large role in energy conservation.

Therefore, if the above-mentioned conventional spot air conditioner is simply placed in the space surrounded by the low partition, even if the front area to be air-conditioned receives the feeling of direct jet air flow from the air supply port, the temperature-controlled air can be felt quickly. However, with this simple arrangement, the air processed by the heat source unit flows from the rear side of the spot air conditioner to the temperature-controlled front area side in the partitioned space, making it difficult to control the temperature in the front area. . This is because conventional spot air conditioners are not intended for use in spaces surrounded by partitions. Therefore, when aiming to save energy by creating a small enclosed space with low partitions and air conditioning in that range, a new air conditioning system that is not a simple combination of spot air conditioners and low partitions is desirable.

As an example considering such a point of view, Patent Document 1 discloses a technique in which partitions are provided in a large-scale space such as a subway platform to create a small space, and a heat source integrated air conditioner is provided in the space. In Patent Document 1, a platform is provided with a partition that is high enough to communicate with the outside air on the ceiling side of an underground space, and a heat source integrated air conditioner integrated with the partition is installed on the platform to save energy.

In Patent Literature 1, the number of air conditioners is required to match the number of locations in the partition-surrounding space. Since partitions are also necessary when operating air conditioners in a station where there are passengers, it is necessary to arrange air conditioners around the partitions. However, in a place such as a factory where many facilities are installed in a building, air conditioners are not necessary for all spaces surrounded by partitions because the installed facilities are operated according to need. In other words, it is sufficient to have air conditioners according to the needs of the partition section where the equipment is to be operated.

Therefore, it is sufficient that the spot air conditioners can be moved to the required partitions, and that the number of the partitions into which the large-scale space is subdivided must meet the maximum number of operating partitions. Normally, it is easy to install a low partition with a simple structure, but a spot air conditioner with a complicated structure is expensive. , the amount of capital investment can be reduced.

In large-scale event venues with atrium structures, there are not only booths that require individual air conditioning, but also booths that do not require air conditioning even if they are divided by partitions. Therefore, there is a high need for portable packaged air conditioners suitable for partitioned booths.

As a prior art suitable for such needs, there is Patent Document 2. This is an example of arranging a partition in a large-scale space and arranging a heat source integrated air conditioner, which is a package type air conditioner, inside the partition. This air conditioner is equipped with an air conditioning unit on the bottom and a heat source unit on the top, blowing cooling air toward the floor from the air supply duct at the bottom front of the air conditioning unit, It has a structure in which a return air duct is provided on the front side of the height near the upper end. In this structure, a temperature stratification generated by slowing down the cooling air flow supplied by the partition is formed in the space surrounded by the partition, and the heat source unit is provided at a position higher than the partition. There is the convenience of being able to exhaust heat from the unit. In this example, stratified air conditioning is applied to the space surrounded by the partition, so the task space can be made small by the partition to lighten the load, and the energy saving property of stratified air conditioning can also be provided.

The point of the technique of Patent Document 2 is to form stratified air in the space surrounding the partition, and this stratified air is formed so as to cause quiet horizontal advection without being affected by the outside of the partition. It is a delicate method to subtly generate In Patent Document 2, the heat source unit is arranged at a position higher than the height of the partition for exhaust heat treatment of the heat source unit, thereby preventing turbulence of the conditioned air. Therefore, this heat source integrated air conditioner becomes a vertically long air conditioning unit that extends well beyond the height of the partition, and has a tall structure in which the heat source unit is mounted on the air conditioning unit.

JP-A-9-60922 JP 2016-180535 A

By the way, assuming caster movement, the heat source integrated air conditioner is more stable when the center of gravity is lowered. That is, it is safer and easier to move if the heavy heat source unit containing the compressor is placed in a low structural position.

Furthermore, the stratified air conditioning of Patent Document 2 requires stabilization of the air in the target enclosed space, but since the low partition has a lightweight and simple structure, it is easily affected by air leakage and the like around the enclosed space. In addition, when there are many small partitions surrounded by partitions, the partition structure is not necessarily uniform, and the air conditioning conditions for stratified formation differ for each individual partition enclosure, requiring complicated work to determine the setting conditions for each small partition. become. Therefore, if a heat source integrated air conditioner that generates a temperature-controlled air flow that can achieve mixed air conditioning, which is easier to manage than stratified air conditioning, can be configured with a structure suitable for movement, it will be an air conditioning system suitable for a space surrounded by a simple structure and low partitions. I can say

By the way, in recent years, the ventilation function of the space to be air-conditioned has also been emphasized. The stratified air formation method disclosed in Patent Document 2 forms a circulation airflow circuit in which the air in the enclosed space whose temperature is controlled is circulated from the return air port on the front of the air conditioning unit, so it has the effect of saving energy. The ventilation function of introducing air is not considered. Therefore, in response to the recent needs for fresh air, there is a strong demand for an air-conditioning technology that has an energy-saving function and is also compatible with the ventilation function.

The present invention responds to the recent needs from the above viewpoints,
First, using low partitions to divide the large rooms in the building into small compartments,
Secondly, an air conditioning unit for supplying and returning conditioned air and a heat source unit for applying a heat cycle are integrated and mounted on a portable truck so that the center of gravity of the heat source unit is lower and roughly centered on the portable truck. A heat source integrated air conditioner is placed movably in the small section,
Third, the inside of the partition-enclosed space is defined as a task area, the outside of the partition-enclosed space is defined as an ambient area, and the task/ambient area is specified in detail,
Fourth, the planar range of this task area is the main area to be air-conditioned that requires temperature control, which corresponds to the front side where the supply air outlet of the air conditioning unit is provided, and the return air intake provided on the back side of the air conditioning unit. A sub-area subject to air conditioning is provided,
Fifth, the height (h) between the upper end of the supply air outlet at a position lower than the upper end of the partition and the floor, and the height (H) between the upper end of the partition and the floor, With the air layer between the heights of (h) to (H) as the boundary layer, the boundary layer at the top of the task area is at a height that contacts the ambient area,
Sixth, the air existing in the space specified in the fourth and fifth above is the target area of air conditioning corresponding to the task area,
Seventh, the planar range of the ambient area is between the mapping range surrounding the partition, which is directly above the partition-enclosing space, and the width range, which is between the outside of the partition side and the side wall of the building, or other partition side. is the width range,
Eighth, the vertical range of the ambient area is the range in the large space where the partition is installed, the range that forms the vertical section from the immediate upper part of the space surrounding the partition to the ceiling, and the space that hits the outside of the partition screen. It is the range that constitutes the longitudinal section from the floor to the ceiling,
Ninth, the air existing in the space in the range specified in the seventh and eighth is set as an air conditioning non-target area corresponding to the ambient area,
Tenth, the air supply outlet of the air conditioning unit has a vertically elongated planar shape that extends from the upper end height (h) to near the floor surface. Supply uniform temperature regulated air,
Eleventh, the intake air of the heat source unit is sucked from the ambient area through the intake port positioned in the ambient area,
Twelfth, exhaust air from the heat source unit is exhaled toward a plume airflow layer higher than the intake port of the heat source unit,
Thirteenth, the airflow circulating in the main area has (1) an energy-saving function of returning to the return air inlet in the sub-area, (2) discharging to the ambient area via the boundary layer, and (3) returning air. (4) A return air intake facing the sub-area is positioned near the boundary layer to draw a mixture of the ambient and task areas. Energy-saving intermediate functions including ventilation to provide a system that can respond to the above (1) to (4),
Fourteenth, mixed air conditioning is performed in the main area to be air-conditioned by setting the air supply volume to generate a circulating airflow circuit over the task/ambient area.
A task air-conditioning system, its method, and its apparatus are proposed, which are constituted by the above first to fourteenth characteristics.

From the point of view of function and effect, the present invention provides an energy-saving mode in which air is circulated in the partitioned space in a space with a small target volume and a light air conditioning load, which is made into a small task area by the partition, and fresh air is introduced into the partitioned space. It has a ventilation mode and an intermediate function of both modes that combines this ventilation and energy saving mode, and it is clarified that any of these functions can be selected by combining a heat source integrated air conditioner and a partition.

The energy-saving mode of the present invention, which is a function to improve the efficiency of energy consumption, mixes and air-conditions air in the main area, circulates it to the air-conditioning unit return air intake in the sub-area, and returns it from the supply air outlet to the main area to be air-conditioned. This is an energy-saving mode that reduces the heat load by blowing out a uniform horizontal stratified temperature-controlled airflow toward the main area and forming a circulating airflow circuit with the mixed air conditioning layer in the main area.

The function of drawing fresh air into the task area, which is the ventilation mode of the present invention, introduces the air in the ambient area from the air conditioning unit return air intake, and directs it from the large and flat supply air outlet to the main area to be air conditioned. It is a ventilation mode that blows out such a horizontal stratified temperature control air flow, mixes air conditioning in the main area, and then discharges it to the ambient area again with the piston flow effect.

The intermediate mode, which serves both the ventilation function and the energy saving function of the present invention, places the return air intake facing the sub-area near the boundary layer and positions it in the upper area of the mixed air conditioning layer, so that the main area with a light heat load. The air mixed with the return airflow from the main area and the fresh air with a large heat load is drawn into the return air intake, and the fresh air is blown out from the supply air outlet in a uniform horizontal stratified temperature-controlled airflow toward the main area to be air-conditioned. This is an energy saving mode including ventilation that circulates air containing air and reduces the air conditioning load compared to the above ventilation mode.

The present invention, which provides the functions described above, has partitions placed on the floor surface in part of a large space provided in a building, and an air-conditioning target area, which is a task area surrounded by the partitions, and the task area. There is a non-air-conditioned area positioned on the upper ceiling side and side of the area and surrounding the task area as an ambient area,
A heat source integrated air conditioning system in which a heat source unit having a compressor and an air conditioning unit having a heat exchange function via a heat transfer medium with the heat source unit are mounted integrally with the heat source unit and movable with respect to the floor surface. In a task air conditioning system in which the heat source integrated air conditioner is arranged inside the task area,
The heat source-integrated air conditioner is placed in the task area with the floor surface facing down in the task area,
A space in the task area facing an air supply outlet provided on the front side of the air conditioning unit is used as a main area, and the air supply outlet is arranged to face the main area for receiving temperature-controlled air, and , the heat source unit is positioned behind the supply air outlet, and a return air suction port provided on the rear side of the air conditioning unit corresponding to the rear side of the heat source unit is positioned within the task area with the supply air outlet. Located in a sub-area corresponding to the rear side and corresponding to a space other than the main area, or located in the ambient area in a range corresponding to the space directly above this sub-area,
a duct cover that generally covers the heat source unit such that an intake opening for blowing air to the heat source unit and an exhaust opening for exhausting air from the heat source unit are located in an ambient area directly above the task area, and / or provided across the ambient area immediately above the task area,
An energy-saving mode in which air drawn in from the return air suction port provided on the back surface of the air conditioning unit is returned from the sub-area, a ventilation mode in which air is introduced from the ambient area, or mixed air in the ambient area and the task area is used. A first invention is a task air-conditioning system characterized by selecting at least one of energy-saving intermediate modes including suction ventilation.

The task air conditioning system according to the first invention,
(a) In the energy saving mode, after the air in the main area is mixed and air-conditioned, the air is circulated to the return air intake port of the air conditioning unit in the sub-area, and is again blown out from the supply air outlet into the main area. air circulation repeating said mixed air conditioning of an area;
(b) the ventilation mode introduces fresh air in the ambient area from the return air intake of the air conditioning unit and blows it out from the supply air outlet to the main area, and then mixed air-conditions the main area and then again; air circulation that discharges into the ambient area;
(c) said intermediate mode sucking the air mixture between said ambient area and said task area locates the return air inlet facing said sub-area in the upper area of the mixed air-conditioning layer by locating it near the boundary layer; Then, mixed air of return air flow from the main area with a light heat load and fresh air with a large heat load is sucked into the air conditioning unit, and the air blown out from the supply air outlet to the main area is an air circulation containing fresh air. be,
A second invention is a task air-conditioning system including any one of the above (a), (b), and (c).

The main method of the present invention is to provide an air-conditioning target area in which a partition is placed on the floor surface in a part of a large space provided in a building, and the space surrounded by this partition is set as a task area, and the task area. There is a non-air-conditioned area positioned on the upper ceiling side and the side and surrounding the task area as an ambient area,
A heat source integrated air conditioning system in which a heat source unit having a compressor and an air conditioning unit having a heat exchange function via a heat transfer medium with the heat source unit are mounted integrally with the heat source unit and movable with respect to the floor surface. A task air conditioning method in which the heat source integrated air conditioner is arranged inside the task area,
a step of placing the heat source integrated air conditioner in the task area with the floor face down in the task area;
A step of arranging a space in the task area facing an air supply outlet provided on the front side of the air conditioning unit as a main area so that the air supply outlet faces the main area that receives temperature-controlled air;
The heat source unit is positioned on the rear side of the supply air outlet, and the return air suction port provided on the rear side of the air conditioning unit corresponding to the rear side of the heat source unit is positioned within the task area of the supply air outlet. Positioning in a sub-area corresponding to the rear side and corresponding to a space other than the main area, or positioning in the ambient area in a range corresponding to the space directly above this sub-area;
a duct cover that generally covers the heat source unit such that an intake opening for blowing air to the heat source unit and an exhaust opening for exhausting air from the heat source unit are located in an ambient area directly above the task area, and/or providing from the task area to the ambient area immediately above,
An energy-saving mode in which air drawn in from the return air suction port provided on the back surface of the air conditioning unit is returned from the sub-area, a ventilation mode in which air is introduced from the ambient area, or mixed air in the ambient area and the task area is used. A third aspect of the present invention is a task air-conditioning method characterized by selecting at least one of energy-saving intermediate modes including suction ventilation.

The method of task air conditioning according to the third invention,
(a) In the energy saving mode, after the air in the main area is mixed and air-conditioned, the air is circulated to the return air suction port of the air conditioning unit in the sub-area, and is again blown out from the supply air outlet to the main area, and the air in the main area is a step of air circulation that repeats said mixed conditioning of the area;
(b) the ventilation mode introduces fresh air in the ambient area from the return air intake of the air conditioning unit and blows it out from the supply air outlet to the main area, and then mixed air-conditions the main area and then again; a step of air circulation discharging into the ambient area;
(c) said intermediate mode sucking the air mixture between said ambient area and said task area locates the return air inlet facing said sub-area in the upper area of the mixed air-conditioning layer by locating it near the boundary layer; The mixed air of the return air flow from the main area with a light heat load and the fresh air with a large heat load is sucked into the air conditioning unit, and the air blown out from the supply air outlet to the main area contains fresh air. step,
A fourth aspect of the present invention is a task conditioning method including any one of the above steps (a), (b), and (c).

The apparatus used in the present invention has partitions placed on the floor surface in part of a large space provided in a building, and an air-conditioning target area, which is a task area surrounded by the partitions, and the task area. There is a non-air-conditioned area positioned on the upper ceiling side and the side and surrounding the task area as an ambient area,
A heat source unit having a compressor and an air conditioning unit having a heat exchange function via a heat transfer medium are mounted integrally with the heat source unit and movable with respect to the floor surface of the task area. In the heat source integrated air conditioner installed stationary inside,
A space in the task area facing an air supply outlet provided on the front side of the air conditioning unit is used as a main area, and the air supply outlet is arranged to face the main area for receiving temperature-controlled air, and , the heat source unit is positioned behind the supply air outlet, and a return air suction port provided on the rear side of the air conditioning unit corresponding to the rear side of the heat source unit is positioned within the task area with the supply air outlet. Located in a sub-area corresponding to the rear side and corresponding to a space other than the main area, or located in the ambient area in a range corresponding to the space directly above this sub-area,
a duct cover that generally covers the heat source unit such that an intake opening for blowing air to the heat source unit and an exhaust opening for exhausting air from the heat source unit are located in an ambient area directly above the task area, and / or provided across the ambient area immediately above the task area,
An energy-saving mode in which air drawn in from the return air suction port provided on the back surface of the air conditioning unit is returned from the sub-area, a ventilation mode in which the air is introduced from the ambient area, or mixed air in the ambient area and the task area. A fifth aspect of the present invention is an air conditioner integrated with a heat source, characterized in that the height of the return air inlet is determined by one of energy-saving intermediate modes including ventilation for sucking air.

As an invention focusing on the relative height relationship between the device main body and the partition, the heat source integrated air conditioner according to the fifth invention has a height from the floor surface to the supply air outlet or the uppermost end of the blown air. Assuming that the height is h and the height from the floor surface to the uppermost end of the partition is H, a heat source integrated air conditioner having a relationship of h<H is defined as a sixth invention.

In the first invention, a factory production line installed in a large space in a building or an event venue on an open floor can be easily partitioned without changing the layout of the line, or partitioned by a screen according to the event. It is an air conditioning system that provides a temperature environment suitable for each small area.In particular, it is possible to select an energy saving mode, a ventilation mode that takes in fresh air, or an intermediate mode that considers energy saving while introducing fresh air. Although it is an air conditioning system that does air conditioning, this partitioning into small compartments reduces the heat load of the target area and naturally saves energy compared to a complete mixed air conditioning system that air-conditions the entire room. This air conditioning system uses mixed air conditioning that does not require quietness of the air, so the airtightness of the partitions, which is essential in conventional stratified air conditioning, is not required as compared to the stratified air conditioning system, and air leaks outside the partition. It is a system with a high energy-saving effect that treats it as a heat load. The first invention enables a ventilation function that is not considered in the prior art, and also enables the selection of intermediate ventilation/energy-saving functions that allow air circulation while introducing fresh air. Therefore, the air-conditioning system of the present invention not only saves energy but also appropriately maintains the equipment and provides comfort to the user.

The second invention relates to the first invention, particularly, (A) energy saving mode, (B) ventilation mode, and (C) ventilation mode and energy saving including ventilation for sucking mixed air in ambient area and task area It is possible to provide an air-conditioning system that implements the first invention by more specifically configuring the three modes (A), (I), and (C), which are intermediate modes that merge the three modes.

In the third invention, a factory production line installed in a large space in a building or an event venue on an open floor can be easily partitioned without changing the layout of the line, or partitioned by a screen according to the event. An air-conditioning method that provides a temperature environment suitable for each small area, and allows switching between an energy-saving mode, a ventilation mode that takes in fresh air, or an intermediate mode that takes into consideration energy saving while introducing fresh air. The method. This partitioning into small compartments reduces the heat load of the target area and naturally saves energy compared to the complete mixed air conditioning method that air-conditions the entire room. Because it uses mixed air conditioning that does not require tranquility, the airtightness of the partitions, which is essential in conventional stratified air conditioning, is not required as compared to the stratified air conditioning system, and even if air leaks outside the partition, it is treated as a heat load. It is a method with high energy-saving effect, and it is also possible to have a ventilation function that is not considered in the conventional technology, and it is also possible to select an intermediate function of ventilation and energy-saving that can circulate air while introducing fresh air. Therefore, the air-conditioning method of the present invention not only saves energy but also appropriately maintains the equipment and provides comfort to the user.

The fourth invention relates to the third invention, in particular, (A) energy saving mode, (B) ventilation mode, and (C) the intermediate mode for sucking mixed air between the ambient area and the task area, these three It is a more specific method of modes (a), (b), and (c), and can provide an air conditioning method that implements the third invention.

The fifth invention specifies and clarifies the heat source integrated air conditioner essential for carrying out the first invention or the third invention in relation to the partition, and the energy saving mode, ventilation mode and It is possible to provide an air conditioner integrated with a heat source that can selectively implement the energy-saving intermediate mode of both modes.

The sixth invention relates to the fifth invention, and particularly provides the effect of the invention in which the relationship between the supply air outlet provided in the heat source integrated air conditioner and the partition is specified more specifically.

FIG. 2 is a right side view of a heat source integrated air conditioner prepared for the present invention; 1 is a partially cutaway front view of a heat source integrated air conditioner prepared for the present invention; FIG. 1 is a left side view of a heat source integrated air conditioner prepared for the present invention; FIG. 1 is a rear view of a heat source integrated air conditioner prepared for the present invention; FIG. FIG. 2 is a plan view of air conditioners arranged in a partition surrounding area for carrying out the present invention; It is a right side view of an air conditioner for carrying out the present invention. It is an airflow diagram which shows the energy saving mode implemented by this invention planarly. FIG. 2 is an airflow diagram sideways showing an energy saving mode implemented in the present invention; FIG. 4 is a side view showing an air layer distributed in a large space inside the building; Fig. 2 is a right side view of an air conditioner suitable for the ventilation mode implemented in the present invention; FIG. 4 is an airflow diagram showing a side view of a ventilation mode implemented in the present invention; FIG. 2 is a right side view of an air conditioner suitable for an energy-saving intermediate mode including a ventilation mode implemented in the present invention; FIG. 4 is an airflow diagram sideways showing an energy-saving intermediate mode including a ventilation mode implemented in the present invention; FIG. 10 is a diagram explaining that experimental data in an energy-saving intermediate mode including the ventilation mode of the present invention shows a profile peculiar to mixed air conditioning. FIG. 4 is a planar explanatory view of another embodiment of the ventilation mode of the present invention; FIG. 4 is a side view illustration of another embodiment of the ventilation mode of the present invention; FIG. 10 is an explanatory diagram of still another embodiment of the ventilation mode of the present invention; FIG. 4 is an explanatory diagram summarizing the relationship between the heat source integrated air conditioner and the partition;

FIGS. 1 to 4 show an apparatus prepared for a heat source integrated air conditioner embodying the present invention, and are diagrams for explaining the basic structure before attaching a cover member for an air duct. 1 is a right side view, FIG. 2 is a front view, FIG. 3 is a left side view, and FIG. The front view of FIG. 2 omits a part of the air supply blowout chamber arranged on the front side, and the outer shape of the air supply blowout chamber is shown by a two-dot chain line to show a part of the front surface of the heat source unit on the back side. It is a partially broken view shown in .

<Positional relationship between the air conditioning unit 2 and the heat source unit 3 of the heat source integrated air conditioner>
A heat source integrated air conditioner 1 prepared for carrying out the present invention has a large flat air supply outlet 10, which is illustrated by a cross in the center of FIG. A heat source unit 3 is attached behind the outlet 10. - 特許庁Further, the structure is such that the return air suction port 15 of the air conditioning unit 2 is provided on the rear side of the heat source unit 3 . That is, in this heat source integrated air conditioner 1, the heat source unit 3 is mounted at a substantially central position between the front portion and the rear portion of the air conditioning unit 2 extending in the front-rear direction. The details of this structure are described below, but first, the basic structure of the device is described, followed by the cover structure mounted for placement and operation within the partition.

<Basic structure of the air conditioner prepared for the present invention>
A heat source integrated air conditioner 1 includes an air conditioning unit 2 equipped with a large blowing surface to function as an indoor unit, and a heat source unit 3 functioning as an outdoor unit for processing air conditioning heat, mounted on a portable truck 4. Mounted and fixed. The transportable carriage 4 is shown in the form of a plate, but it is a rectangular frame that is long in the direction of movement and is made of angle steel or channel steel assembled as a square frame. , 6c, 6d, 6e, 6f). This frame is provided with a frame-like mounting platform 7 extending upward from the central portion of the carriage 4 . Since the heat source unit 3 is mounted on and fixed to the mount frame 7, the heavy heat source unit 3 is directly supported at substantially the center of the carriage 4. - 特許庁The heat source unit 3 is lowered to a lower position closer to the floor surface 5 than the required height of the air supply outlet 10 and the air supply outlet chamber 11 in which it is mounted, and placed on the mounting frame 7. do. Although the sizes and the like of these components will be described later, the center of gravity of this heat source integrated air conditioner 1 is lowered to a position lower than the upper end height 10a of the supply air outlet 10 facing the task area, and is mounted on a portable cart. 4, it is a stable structure that allows safe movement.

<Schematic Structure of Air Conditioning Unit 2 of Heat Source Integrated Air Conditioner 1>
The air conditioning unit 2 has a supply air outlet 10, a supply air outlet chamber 11, a supply air duct 12, a heat exchanger section 13, a return air duct 14, and a return air suction port 15, which are generally arranged in a horizontal line, and a blower fan (not shown). built-in. With this structure, the supply air outlet 10 is in contact with the main area of the task area 8 to blow out temperature-controlled air, and the return air inlet 15 provided on the back side is in contact with the sub-area to take in air.

<Air supply outlet and supply air outlet chamber of air conditioning unit 2>
By the way, in order to perform the mixed air conditioning of the task area 8, it is necessary to blow out air that is uniformly horizontally diffused from the supply air outlet 10. As shown in FIG. In particular, in order to suppress the induction from the large ambient area 9 including the area immediately above the partition surrounding range, it is necessary to perform horizontal blowing in consideration of the air volume supply of the inner peripheral induction area of the diffusion airflow. The structure of the air outlet 10 is such that a perforated plate is placed on the outer surface, a commutator is placed on the inner surface, and a horizontal airflow adjustment guide (not shown) is provided to blow out a horizontal airflow between them. Make a large rectangular outlet. In other words, the air supply outlet 10 is a large-area planar air supply that supplies a large air supply outlet and a large amount of air for promoting air mixing in the task area 8 and suppressing mixing from the large ambient area 9. A blowout port 10 is required. The size of the air supply outlet 10 is, for example, approximately 400×1200 mm or 600×1500 mm. In order to blow out a uniform horizontal airflow from the supply air outlet 10, it is necessary to provide the supply air blowout chamber 11, change the direction of the airflow blown out from the supply air duct 12, and adjust the airflow velocity. Therefore, since the internal structure has been devised, the supply air blowing chamber 11 is one size larger than the air supply blowing outlet 10, and in one example, it is a rectangular housing of about 600 x 1900 mm. In FIG. 2, in order to show the shape of the rear heat source unit 3, a part of the rectangular parallelepiped housing is cut away 11a and indicated by a chain double-dashed line 11b. By the way, when the heat source integrated air conditioner 1 is in the cooling operation in the ventilation mode or the energy saving mode, the airflow blown out from the supply air outlet 10 is set to the above-described horizontal airflow. can be directed.

<Other Structures of Air Conditioning Unit 2>
The heat exchanger section 13 has a general heat exchanger structure in which a large number of heat transfer tubes and plates for circulating a heat transfer medium are connected and arranged. A return air intake port 15 is provided on the back side of the heat exchanger section 13, that is, on the back side of the heat source integrated air conditioner 1. As shown in FIG. This return air intake 15 draws air from the task area 8 or the ambient area 9 . Between the return air intake port 15 and the supply air blowout chamber 11, a supply air duct 12 and a return air duct 12 are provided to obtain a space for installing a filter and a blower fan (not shown) as well as an intake/exhaust duct cover for the heat source unit 3, which will be described later. An air duct 14 is provided. The horizontal length between the return air inlet 15 and the supply air outlet 10 is set to about 1600 to 1900 mm or more, and the airflow blown from the supply air outlet 10 directly flows into the return air inlet 15 in a short circuit. It is a long enough structure that does not generate

<Heat source unit 3 and operation panel of heat source integrated air conditioner 1>
The heat source unit 3 is divided into a heat pump chamber 16 containing heat pump elements such as a compressor, a four-way valve, an expansion valve, an accumulator (not shown), a heat exchanger chamber 17, and the heat pump chamber 16 and the heat exchanger chamber 17. Equipped with an internal partition plate 18, a heat exchanger (not shown), a front intake port 19 illustrated by cross hatching in the center of FIG. 2, a side intake port 20 illustrated by cross hatching in the center of FIG. 21b, fan guards 22a and 22b, and rear exhaust ports 23a and 23b are provided. Although not shown, the structure from the front air inlet to the rear air outlet may be replaced with a heat source unit having a heat pump/chiller and a cooling tower/heating tower structure. The portable cart 4 has a plurality of casters 6a, 6b, 6c, 6d, 6e, and 6f arranged on the left and right sides of the floor. Therefore, a heat source unit mounting frame 7 is provided between the air conditioning unit 2 and the heat source unit 3 to fix the heat source unit 3, and a pipe for flowing a heat transfer medium is provided between the air conditioning unit 2 and the heat source unit 3 (not shown). to connect. Furthermore, a control panel 24 and an operation panel 25 shown in the center of FIG. This operation panel 25 enables switching between cooling and heating, and setting of temperature, air volume, and air velocity.

<Relationship between the center of gravity of the heat source unit 3 and the height of the upper end of the air conditioning unit 2>
Since the heat source unit 3 incorporates a heat pump element such as a compressor, it is heavy and greatly affects the center of gravity of the heat source integrated air conditioner 1 . In a heat source integrated air conditioner that supplies temperature-controlled air to a partition section provided in a large-scale space such as a factory, which is the object of the present invention, the heat source unit 3 has a weight (mass) of approximately 150 kg or more, and this heat source It is the main element that determines the center of gravity of the integrated air conditioner 1 . Since the compressor is arranged in the lower part inside the heat source unit 3, the center of gravity is located at a height lower than the central height hg of the height hn of the heat source unit 3 as shown in FIG. That is, the heat source with a lower center of gravity that is closer to the floor surface 5 than the height hc of the uppermost end 11c of the supply air blowout chamber 11 that is one size larger than the vertically long large area air supply blowout port 10 required for this air conditioning unit 2. It is an integrated air conditioner 1. This makes it possible to lower the center of gravity of the device compared to the structure in which the outdoor unit is placed on the indoor unit, which has been clarified in the prior art. Further, as shown in FIG. 3, the center of gravity is positioned substantially at the center of the longitudinal width of the portable truck 4, so that the heat source integrated air conditioner 1 has a structure that is safe for movement.

<Operational Relationship between Air Conditioning Unit 2 and Heat Source Unit 3>
The air conditioning unit 2 and the heat source unit 3 are connected by a pipe (not shown) through which a heat transfer medium flows to switch between cooling and heating. Although there are water and Freon-based refrigerants as a heat transfer medium, HFC (hydrofluorocarbon) is used here, and the operational relationship between the air conditioning unit 2 and the heat source unit 3 during cooling will be described below. It can be understood as an action. In addition to HFC, there are various types of heat medium including water, but any of them can be used.

<Operation of Heat Source Unit 3 and Air Conditioning Unit 2 During Cooling>
When the heat source integrated air conditioner 1 starts operating in the cooling mode, the high-temperature/high-pressure vapor-phase refrigerant compressed by the heat source unit 3 is introduced into the heat radiation/condensation function unit (not shown) via the four-way valve. , the air in the ambient area 9 is sucked from the front air intake 19 and the side air intake 20 of the heat source unit 3, passes through a heat exchanger (not shown) built in the heat source unit 3, and vapor phase refrigerant is condensed. After the heat exchange, the air is discharged from rear exhaust ports 23a, 23b to a plume airflow layer, which will be described later, via blowing fans 21a, 21b protected by fan guards 22a, 22b. On the other hand, the low-pressure gas-liquid two-phase refrigerant obtained by decompressing the condensed high-pressure liquid-phase refrigerant is guided to the heat exchanger section 13 of the air conditioning unit 2, takes heat from the air, evaporates, and becomes a low-temperature, low-pressure gas. It changes to a phase refrigerant. Therefore, the air in the task area 8 and the ambient area 9 sucked from the return air suction port 15 is cooled by the latent heat of vaporization of the liquid-phase refrigerant as cold air, and is supplied from the supply air outlet 10 through the supply air outlet chamber 11 to the task area. It blows out uniformly horizontally toward the main area of 8. The low-temperature, low-pressure vapor-phase refrigerant that has passed through the heat exchanger section 13 repeats a cycle in which the vapor-phase refrigerant separated from the liquid-phase refrigerant is again sucked into the compressor by being led to a four-way valve and an accumulator (not shown).

<Operation of Heat Source Unit 3 and Air Conditioning Unit 2 During Heating>
When the heat source integrated air conditioner 1 starts operating in the heating mode, the four-way valve is switched, and the high-temperature, high-pressure gas-phase refrigerant compressed by the compressor passes through the four-way valve, which is the opposite of the operation in the cooling operation. direction, and the heat exchanger section 13 of the air conditioning unit 2 functions as a condenser. Then, the air passing through the heat exchanger section 13 is heated by heat exchange with the gas-phase refrigerant, becomes warm air, and passes through the supply air outlet 10 via the supply air outlet chamber 11 to the floor surface of the main area of the task area. 5, adjust with the wind direction guide and blow out.

<Center of Gravity Position of Heat Source Integrated Air Conditioner 1>
Since the required horsepower of the heat source unit 3 varies depending on the volume of the target task area, various sizes and weights are possible. However, even if it is used in an indoor arena that exceeds 100,000 cubic meters, it is possible to unify the size of the heat source integrated air conditioner by narrowing the partitioned space. Substantially, the truck portion 4 of the heat source integrated air conditioner 1 can be mounted as a rectangular steel frame of about 1800 to 2200 mm in the longitudinal direction and about 1400 mm in the width direction in the form shown in FIGS. 1 to 4. The heat source-integrated air conditioner 1 shown in FIG. 3 of the embodiment has a width of the truck portion of 1350 mm and a length of 1780 mm in the front-to-rear direction. As for the height, the upper end portion 11c of the supply air blowing chamber 11, which is the highest in the air conditioning unit 2, is about hc=1960 mm from the floor surface 5, while the height of the upper end portion 3a of the heat source unit 3 is about 1960 mm from the floor surface 5. hs=2600 mm, and the middle height of the heat source unit 3 (height, hn=approximately 1600 mm) is approximately hg=1800 mm. By the way, since the heavy compressor (not shown) is located at a low position near the heat exchanger section 13 of the air conditioning unit 2, the center of gravity of this device is in the middle of the height hn of the heat source unit 3 as shown in FIG. is substantially lower than the height hg of . Therefore, the height of the center of gravity of the heat source integrated air conditioner 1 is a lower center of gravity closer to the floor surface 5 than the height hc of the uppermost end portion 11c of the supply air blowout chamber 11, and the height hc of the supply air blowout chamber 11 is The heat source-integrated air conditioner 1 with a lower center of gravity is obtained. This means that the center of gravity is lower than that of conventional heat source integrated air conditioners in which the outdoor unit is placed on the indoor unit. Since the center of gravity is located, the heat source integrated air conditioner 1 applied to the embodiment has a safe structure that moves stably.

<Partition applied to the present invention>
FIG. 5 is a plan view of the air conditioner integrated with a heat source partially modified to be applied to this system and installed in a large space in a building as viewed from the ceiling side. Although doors, windows, rooftop fans, etc. are omitted in FIG. 5, there is a partition-surrounding space 28 in which a partition 27 is installed on the floor surface 5 of the building wall 26 where these are provided. The enclosed space 28 of this partition is a polyethylene sheet with a thickness of 0.1 mm and a height of 2.1 m. 2.1m wide and about 1m wide resin veneers can be easily made by arranging them in four directions at intervals of about 1 to 2m, so that the heat insulating property with the surrounding four-sided outer regions 29 is low.

<Position of heat source integrated air conditioner>
A partial modification of the heat source integrated air conditioner is to create a dedicated air flow path for the heat source unit 3 by attaching a duct cover, which will be described later. The heat source integrated air conditioner 30 with this duct cover attached is arranged, for example, at a corner of the partition surrounding space 28 shown in FIG. Here, the front surface of the supply air outlet 10 of the air conditioning unit 2 is arranged facing the main area 37 of the task area 8 to be air-conditioned, which requires temperature control. The temperature-controlled air blown out from the air supply outlet 10 is first received in the main area 37, and is supplied to the upper right side of the plane including the air supply outlet 10 indicated by the dashed line 35 in FIG. 5, that is, the arrow 36 side. This is the main area 37 into which a uniform laminar airflow flows. Conversely, the arrow 38 side becomes a sub-area 39 through which the return airflow flows. Therefore, the return air inlet 15 of the air conditioning unit 2 is arranged in the sub-area 39 which is the task area 8 included in the partition-enclosed space 28 but whose temperature is not strictly controlled. The temperature-controlled air blown out from the supply air outlet 10 circulates around the partition-surrounded space 28 and returns to the return air inlet 15. No short circuit occurs. In FIG. 5, the heat source integrated air conditioner 30 applied to the present invention is arranged in the lower left corner of the partition surrounding space 28 in the drawing, but this position is not restrictive in practice.

<Heat source integrated air conditioner with duct cover applied to the system of the present invention>
The air conditioner prepared for the present invention shown in FIGS. 1 to 4 needs to prevent the air flow of the heat source unit 3 from entering the task area 8 in order to thoroughly control the temperature of the task area 8 . Therefore, before placing this device in the space surrounding the partition, the heat source unit duct cover is attached so as to generally surround the side surface of the heat source unit 3 as shown in FIG. This heat source integrated air conditioner 30 with a duct cover is the air conditioning unit 2 and the heat source unit 3 as described with reference to FIGS. That is, the air supply outlet 10, the air supply outlet chamber 11, the air supply duct 12, the heat exchanger section 13, the return air duct 14, and the return air suction port 15 of the air conditioning unit 2 are attached to the portable carriage 4 from the front to the back. , and the heat source unit 3 is positioned directly above the air conditioning unit 2 . The heat source integrated air conditioner 30 to be incorporated into the system of the present invention includes an air intake duct cover 31 covering the front air intake 19 and the side air intake 20 of the heat source unit 3, and an air exhaust cover 31 covering the rear air exhausts 23a and 23b of the heat source unit 3. It is an unprecedented structure in which a duct cover 32 is attached. Since the air intake duct cover 31 is provided so as to surround the side surface of the heat source unit 3, the air intake opening 33 is located at the top. Further, the exhaust duct cover 32 surrounds the rear sides of the rear exhaust ports 23a and 23b of the heat source unit 3, and is provided with an exhaust opening 34 for exhausting heat upward. Here, the opening area of the intake opening 33 is 500 mm×1100 mm, and the opening area of the exhaust opening 34 is 500 to 650 mm×900 mm. The air intake opening 33 and the air exhaust opening 34 are elevated by about 100 mm and 500 mm respectively from the upper end 3a of the heat source unit 3. However, since it is sufficient to exhaust heat to the plume airflow layer described later, the air intake opening 33 The relationship between the height ha and the height hw of the exhaust opening 34 is generally ha≦hw. Therefore, the height of the exhaust opening 34 from the floor surface 5 is approximately 3100 mm at hw. The air intake opening 33 is located directly above the heat source unit 3 . Although the exhaust opening 34 is shown separated from the intake opening 33 obliquely rearward by about 200 to 300 mm, the shape is not limited to this.

<Example of energy saving mode>
FIG. 7 shows the cooling airflow in the task area 8 when the heat source integrated air conditioner 30 with a duct cover used in the present invention is placed in the partition surrounding space 28 and operated in the energy saving mode. It is a flow chart from a main area 37 bordering on a plane 35 including an air outlet 10 to a sub-area 39. FIG. Similarly, FIG. 8 is a diagram showing the airflow with arrows when viewed from the side along the line AA in FIG. In addition, FIG. 9 shows the air layer distributed in the large space in the building at that time.

<Airflow in energy saving mode and air layer in large space>
Here, the horizontal diffused airflow 40 cooled in a uniform layer from the supply air outlet 10 spreads over the main area 37 while gradually descending toward the floor surface 5 according to the specific gravity, but is blocked by the partition 27 to flow around. 41, it is returned 42 to the sub-area 39. This horizontal diffusion airflow 40 and reflux 42 create a mixed air conditioning layer 43 within the task area 8 . By the way, since the temperature stratification 44 is generated in the upper part of the partition-enclosed space 28 toward the upper part of the room, the surface 45 in contact with the temperature stratification 44 and the surface 46 in contact with the mixed air-conditioning layer 43 are set as the upper and lower surfaces, respectively. A boundary layer 47 is created between 44 and the mixed air conditioning layer 43 . This boundary layer 47 receives advection and attraction from the temperature stratification 44 above it and the mixed air-conditioning layer 43 below it. and the plane formed by the upper end portion 10a of the supply air outlet. Focusing on the height hp of the partition 27 and the height h of the supply air outlet 10, making hp higher than h results in a stable boundary layer 47, and the difference (hp-h) is preferably 300 mm or more. was found to stabilize the mixed air-conditioning layer 43 when it was set to 600 mm. Therefore, the main area 37 and the sub-area 39 forming the mixed air-conditioning layer 43 are the main areas of the substantial task area 8, and the temperature stratification 44 directly above the boundary layer 47 is the ambient area 9 different from the task area 8. .

<Intake and Exhaust of Heat Source Unit 3>
The upper layer of the mixed air conditioning layer 43 and the boundary layer 47 becomes a temperature stratification 44 , and the processing heat is emitted from the exhaust opening 34 of the heat source unit 3 to the plume airflow layer 49 as an exhaust jet 48 . Even if this plume airflow layer 49 is discharged by an outside air fan (not shown) on the ceiling, it is stirred together with other heat to form a high temperature retention layer 51 . Since the exhaust air from the heat source unit 3 is forcibly blown out by the blower fans 21a and 21b, the exhaust jet 48 generates a plume airflow layer 49. A one-way suction flow 52 is drawn in from the thermal stratification 44 below the air flow layer 49 and the high temperature retention layer 51 . This one-way suction flow 52 is discharged as an exhaust jet 49 after heat exchange in the heat exchanger (not shown) of the heat source unit 3 . That is, the air intake/exhaust duct covers 31 and 32 that generally surround the side surfaces of the heat source unit 3 extend the air path to the plume airflow layer 49 and the temperature stratification 44 . Therefore, the intake and exhaust flows of the heat source unit 3 do not mix with the air present in the main area 37, sub-area 39 and boundary layer 47 of the task area. It is desirable that the exhaust opening is higher than the intake opening. By utilizing this difference in airflow characteristics, it is possible to configure the exhaust opening and the intake opening at the same height.

<Outer layer of partition>
In addition, the outer region 29 corresponding to the side of the partition 27 forms temperature stratification or agitation in which the outside air flow is mixed due to the influence of the perimeter zone 53 of the building wall 26 and the heat transfer zone 54 that transfers heat from the cold partition 27 during cooling. A layer is formed. However, since the mixed air conditioning layer 43 is formed by adjusting the air volume and temperature of the horizontal diffusion airflow 40 of the supply air outlet 10 so as not to affect the partition surrounding space 28, the outer area 29 of this partition is used as the task area. is not considered and may be included in the ambient region 9.

<Heating in energy saving mode>
The heat source integrated air conditioner 30 with a duct cover shown in FIG. 6 can perform heating in the energy saving mode while placed in the position shown in FIG. At the time of heating, the four-way valve is switched by setting the heat source unit 3 and the air conditioning unit 2 to heating operation using the adjustment plate so that the uniform stratified airflow from the supply air outlet 10 is directed to the floor surface 5 with the operation panel. Set to heating operation. The temperature-controlled air blown out from the supply air outlet 10 flows forward along the floor surface 5 and stirs while entraining air with a large specific gravity falling from the temperature stratification 44 directly above the partition to form a mixed air conditioning layer 43. The air is returned to the return air suction port 15 of the air conditioning unit 2 in the same manner as during the cooling operation.

<Heat source integrated air conditioner suitable for ventilation mode>
In the ventilation mode, a device obtained by adjusting a part of the heat source integrated air conditioner 30 with a duct cover described above is more suitable. A return air duct cover 55 is attached to the return air intake port 15 of the air conditioning unit 2 corresponding to the rear portion of the heat source integrated air conditioner 30 with the duct cover shown in FIG. FIG. 10 shows a heat source integrated air conditioner 57 suitable for the ventilation mode in which the height of the return air intake port 15a is changed. It is the same as the height ha from the floor surface 5, and the length Ls from the supply air outlet 10 to the back surface of the return air duct cover 55 is approximately 2200 mm. Therefore, as shown in FIG. 11, the return air of the air conditioning unit 2 of the heat source integrated air conditioner 57 is sucked from the air layer of the same temperature stratification 44 as the one-way suction flow 52 sucked at the air intake opening 33 of the heat source unit 3. Get fresh air. This heat source-integrated air conditioner 57 is the same as the heat source-integrated air conditioner 30 shown in FIG.

<Example of ventilation mode>
In the ventilation mode, the uniform stratified horizontal diffusion airflow 40 blown out from the supply air outlet 10 spreads over the main area 37 while gradually falling toward the floor surface 5 according to the specific gravity, as in the energy saving mode. be. However, after the circulating air flow 58 blocked by the partition 27 creates the mixed air conditioning layer 43 in the task area 8 , it becomes pushed air 59 like a piston flow to the ambient area 9 directly above the partition surrounding space 28 . This is because the return air intake port 15a of the heat source integrated air conditioner 57 is located in the high ambient area 9 instead of the low position as in the energy saving mode, so that the behavior differs from that in the energy saving mode. The air 40 blown out from the supply air outlet 10 is a flow sucked into the return air suction port 15 a , and the sucked air 60 is sucked from the ambient area 9 directly above the sub-area 39 . Therefore, in ventilation mode, fresh air is blown into the main area 37 to replace the air in the task area 8 .

<Heat source integrated air conditioner suitable for intermediate mode>
In the intermediate mode, it is more preferable to adjust a part of the heat source integrated air conditioner 30 with a duct cover like the heat source integrated air conditioner 57 suitable for the ventilation mode described above. A return air duct cover 61 is attached to the return air intake port 15 of the air conditioning unit 2 corresponding to the rear portion of the heat source integrated air conditioner 30 with the duct cover shown in FIG. FIG. 12 shows a heat source integrated air conditioner 62 suitable for the intermediate mode by changing the height of the return air inlet 15b. 6 is the same as the heat source integrated air conditioner 30 shown in FIG. The height hm of the return air duct cover 61 from the floor surface 5 is lower than the height ha of the intake duct cover 31 from the floor surface 5, and the height hb of the return air suction port 15 used in the energy saving mode (Fig. 3) higher and closer to the height h of the upper end 10a of the supply air outlet 10;

<Common return air duct cover>
6, 10, and 12, the heights (hb, hv, and hm) of the return air suction ports 15, 15a, and 15b are different. However, it is therefore not necessary to provide a different return air duct cover. For example, the common return air duct cover may be a cover provided with a switching valve and an air intake window at the intermediate height hm of the highest return air duct cover 55, and the same cover is used in the ventilation mode and the intermediate mode. can. Also, if the structure is such that a cover with three return air inlets corresponding to each height is attached, there is no need to replace it for each mode.

<Example of Intermediate Mode>
FIG. 13 shows the airflow in the task area 8 and the ambient area 9 when the heat source integrated air conditioner 62 suitable for the intermediate mode of the present invention is placed in the partition-enclosed space 28 and operated in this intermediate mode. Fig. 3 is a flow chart shown; In this intermediate mode, a uniform stratified horizontal diffusion airflow 40 blown out from the supply air outlet 10 spreads over the main area 37 as in the energy saving mode described above. However, the mixed air conditioning air flow 63 blocked by the partition 27 creates a mixed air conditioning layer 43 in the task area 8, and then the return air inlet 15b near the boundary layer 47 flows into the sub-area 39 and the return 64 and Fresh air mixture 65 is drawn in from the ambient area 9 directly above it. Therefore, the amount of air 66 corresponding to the amount of air introduced from the ambient area 9 overflows from the task area 8 into the ambient area 9 . To further explain, unlike the return air inlet 15a at a low position such as in the energy saving mode or at a high position in the ventilation mode, the return air inlet 15b of the heat source integrated air conditioner 62 is located at a height close to the boundary layer 47. The return air inlet 15b will draw in the mixed air 65 of the return air 64 from the sub-area of the task area 8 and the ambient area 9 . Therefore, an amount corresponding to the amount of fresh air entering from the ambient area 9 becomes the overflow air 66 from the air flow 63 of the mixed air conditioning, and the behavior is different from that in the energy saving mode and the ventilation mode.

<Necessity of temperature verification in intermediate mode>
Since the air blown out from the supply air outlet 10 is sucked in from the return air suction port 15b in the ambient area 9, the mixed air 65 with the return air 64 also includes the amount drawn in from the ambient area 9 directly above the sub-area 39. there is Therefore, in this intermediate mode, fresh air is included, so the heat load is greater than in the light-load energy saving mode. On the other hand, in the ventilation mode, the air in the partition-enclosed space 28 must be rapidly replaced with fresh air in a short time. Difficulty in temperature control arises due to the introduction of fresh air from the area. Therefore, it is necessary to verify that the present invention, including temperature control, can be implemented even in such a mode with increased load.

使用した熱源ユニットは設備用エアコンとして比較的中型の８馬力相当のパッケージエアコンを使用し、空調ユニットは縦長平面型の開口面（高さ１２００ｍｍ、幅４００ｍｍ）を持つ多孔板＋水平気流調整ガイド付きの給気吹出口および長方形背面還気口（幅９４０ｍｍ、丈３７０ｍｍ）とし、図１２に示す構造の熱源一体型空調機を準備する。 <Temperature control verification experiment in intermediate mode>
This verification can be confirmed by measuring the temperature distribution in the space surrounding the partition and confirming that a mixed air-conditioning layer is formed in the task area. Table 1 summarizes the specifications of this verification experiment. The partitioned space to be air-conditioned is surrounded by transparent polyethylene sheets with an area of 560 square meters on all four sides with a height of 2.1 meters. It was installed in the center of a large room with a ceiling height of 4.4 m to 6.6 m and an internal volume of 2420 cubic meters. The indoor temperature is 35.0° C. at the height of the partition.

The heat source unit used is a relatively medium-sized package air conditioner equivalent to 8 horsepower as a facility air conditioner, and the air conditioning unit is a perforated plate with a vertically long flat opening (1200 mm high, 400 mm wide) + horizontal airflow adjustment guide. A heat source integrated air conditioner having a structure shown in FIG.

<Experimental data in intermediate mode>
In the experiment, the heat source integrated air conditioner shown in FIG. 12 was placed at the corner of the partition-enclosed space 28, and the cooling air at 13.3° C. was made into a uniform horizontal stratified temperature-controlled air flow and faced from the supply air outlet. 9 vertical temperature distribution thermometers (the vertical temperature is measured at intervals of 0.6m, 1.1m, and 1.7m above the floor) arranged in a matrix of 2.5m in the enclosed space, blowing out toward the corners Measured. A data profile 70 indicated by black circles in FIG. 14 is a temperature distribution obtained by plotting the measured average value of nine vertical temperature distributions on the horizontal axis and the vertical height on the vertical axis. The air supply conditions for this experiment were as follows: ambient temperature 35.0°C, supply air blowing temperature 13.3°C, difference 21.7°C, blowing surface wind speed 2.3 m/sec, air volume 3600CMH. As a result, it was confirmed that the upper and lower temperature difference dT = 3.5°C. This temperature profile is close to the upper and lower temperature difference of 3° C. in the residential area, which is an index value of ISO7730 of the International Organization for Standardization, and is within a practically allowable range. In the course of this experiment, the operation range of this heat source integrated air conditioner was 1 to 1.5 meters/second, the air volume and the ventilation rate of the space surrounded by partitions was 9 times or more, preferably 14 to 21 times/second. It has been found that practically acceptable specifications can be obtained with about 31 times/h even if the partition structure is insufficiently constructed and has no airtightness.

<Consideration of experimental results>
The temperature profile 70 indicated by black circles obtained in FIG. 14 is nearly vertical, but as a contrast, the dashed line 71 shows the vertical temperature distribution when the system of the present invention is not applied. The temperature 72 near the floor surface of this dashed line 71 is 13.3° C., and the temperature 73 at the upper end of the partition is 35.0° C. Therefore, this dashed line 71 is a profile with a gentle temperature gradient forming temperature stratification. The experimental data of the present invention showing a steep angle with respect to the slope of the dashed line 71 shows a profile peculiar to mixed air conditioning. Therefore, it is clear from this experiment that the air-conditioning system of the present invention controls the temperature of the task area in the space surrounding the partition by mixed air-conditioning. In addition, it was found that the surface wind speed of the supply air outlet is not the ultra-low speed of stratified air conditioning, but a gentle breeze of 1 to 2.3 m/sec, which gives a refreshing feeling, and mixed air conditioning. This means that mixed air conditioning can be obtained without the jet jet airflow of the general-purpose local cooling system normally used in factories. This is also one of the effects obtained with the heat source integrated air conditioner of the present invention, which employs the large flat air supply outlet 10 .

<Mid-mode heating>
Intermediate mode heating is also possible with the heat source integrated air conditioner 62 with the duct cover shown in FIG. 12 placed in the position shown in FIG. At the time of heating, the uniform stratified airflow of the supply air outlet 10 is directed to the floor surface 5 as in the energy saving mode, and the four-way valve is switched by setting the heat source unit 3 and the air conditioning unit 2 to heating operation on the operation panel. Can be used for heating operation. The heating air blown out from the supply air outlet 10 flows forward along the floor surface 5 and is pushed by the air having a large specific gravity from the temperature stratification 44 directly above the partition and circulates in the task area to form the mixed air conditioning layer 43. Meanwhile, the air is returned to the return air inlet 15b of the air conditioning unit 2 in the same manner as during the cooling operation.

<Example where a device suitable for energy saving mode replaces ventilation mode in a special embodiment>
In combination with partition 27 further applications can be implemented. FIG. 15 is a plan view, and FIG. 16 is a side view of the airflow. The energy saving mode has already been described using the heat source integrated air conditioner 30 with a duct cover, but the same heat source integrated air conditioner 30 can be used to configure the ventilation mode. This is an example in which the partition 80 of the sub-area 39 of the partition 27 is left open. In the heat source integrated air conditioner 30, the return air inlet 15 of the air conditioning unit 2 is located in the sub-area 39, and the partition 80 opened by the rotatable hinge 81 near it is opened or simply removed, and the return air inlet 15 is opened. , the influx of fresh air 82 from the ambient area 9 occurs. Some recirculation 42 remains but fresh air inflow 82 triggers the ventilation mode to produce forced air 59 . In this combination, the heat source-integrated air conditioner 30 used in the energy saving mode is replaced with the ventilation mode depending on how it is combined with the partition 27 . That is, the heat source integrated air conditioner 30 used in the present invention is an excellent device that can be configured in any mode.

<Cleaning ventilation mode that is a special embodiment and allows high-speed ventilation>
Considering the combination with the partition 27, for example, the used heat source integrated air conditioner 57 suitable for the ventilation mode shown in FIG. FIG. 17 shows an open partition 80 in which cold air crawls over the floor surface 5 from inside the partition-enclosed space 28 and enters the ambient area 9 . On the other hand, since the return air intake port 15a continues to forcibly suck from the ambient area 9, the airflow near the floor surface 5 of the task area 8 is sent out from the open partition 80, and as a result, the floor surface 5 Dust floating nearby is discharged from the forcibly opened partition 80 . Therefore, the combination of the used heat source integrated air conditioner 57 suitable for the ventilation mode and the open partition 80 creates a cleaning ventilation mode that forcibly removes dust floating around the floor surface 5. In this mode, the floor is cleaned. Dust floating near the surface 5 can be removed at high speed.

<Summary of the present invention>
The present invention consists of (1) an air conditioning unit equipped with a large flat air supply outlet that blows uniformly layered temperature-controlled air toward the main area of the task area, and (2) an ambient area above the task area. (3) A return air intake port is provided on the back for this air conditioning unit to suck in the air that circulates from a sub-area of the task area or the ambient area after mixed air conditioning of the task area, and (4) a heat source. The unit is located between (1) and (3), and the heat source integrated air conditioner is placed in the space surrounded by the partition, and (5) the return air intake is in energy saving mode, ventilation mode, or energy saving including ventilation. It is a task air-conditioning system that functions in an intermediate mode, a task air-conditioning method with work steps (1) to (5), and a heat source integrated air conditioner arranged in a space surrounded by a partition. FIG. 18 summarizes the relationship with this function. In FIG. 18, three types of heat source integrated air conditioners are illustrated, but as described above, the structures of the return air suction ports having different shapes can be unified into one form, and these heat source integrated air conditioners are Even if they have the same shape, they can be applied to the present invention.

1, 30, 57, 62 ... heat source integrated air conditioner,
2 air conditioning unit,
3 ... heat source unit,
3a ... the upper end of the heat source unit,
4... transportable trolley,
5 ... floor surface,
7 ... Mounting stand,
8 task area,
9... Ambient area,
10: Air supply outlet of the air conditioning unit,
10a ... the upper end of the air supply outlet,
11 . . . supply air blowout chamber of the air conditioning unit,
12: Air supply duct for air conditioning unit,
13 ... heat exchanger part of the air conditioning unit,
14 ... return air duct of the air conditioning unit,
15, 15a, 15b...return air inlet of air conditioning unit,
16 ... heat pump room,
17 ... heat exchanger room,
18... Internal partition plate,
19 ... the front intake port of the heat source unit,
20... side air inlet of the heat source unit,
21a, 21b... Blower fan of the heat source unit,
22a, 22b... fan guards of the heat source unit,
23a, 23b... rear exhaust port of the heat source unit,
24... Control panel,
25 Operation panel,
26 building wall,
27 ... partition,
27a ... the upper end of the partition,
28 ... partition surrounding space,
29 the outer area of the partition-enclosed space,
31: an intake duct cover that covers the front intake port and the side intake port;
32 ... Exhaust duct cover covering the exhaust port of the heat source unit,
33 ... the intake opening of the heat source unit,
34 ... the exhaust opening of the exhaust port of the heat source unit,
35 . . . A line indicating a plane position including the supply air outlet,
37 The main area into which a uniform laminar airflow flows,
39 . . . sub-areas where the return airflow flows,
40... uniform stratified horizontal diffusion airflow,
41 Circulation in the task area,
42 Circulation within the task area,
43... mixed air conditioning layer,
44 ... temperature stratification,
47 Boundary layer,
48 ... exhaust jet,
49 Plume airflow layer,
50 Ceiling,
51 ... high temperature retention layer,
52 One-way suction flow,
53... Perimeter zone of building wall 26,
54 ... heat transfer zone that transfers heat from the partition,
55, 61 ... return air duct cover,
58 Circulating air flow,
59... pushing air,
60 Suction air flow,
63 Mixed air conditioning air flow,
64 Reflux,
65... mixed air of fresh air,
66 ... overflowing air,
70 Vertical temperature profile,
73 ... the temperature at the upper end position of the partition,
80 Opened partition,
82 Incoming fresh air,
83 Outflowing cold air,

Claims (6)

Partitions are placed on the floor in a part of the large space provided in the building, and the space surrounded by the partitions is an air conditioning target area as a task area, and is positioned above the task area on the ceiling side and side surfaces. and a non-air-conditioned area having a space surrounding the task area as an ambient area,
A heat source integrated air conditioning system in which a heat source unit having a compressor and an air conditioning unit having a heat exchange function via a heat transfer medium with the heat source unit are mounted integrally with the heat source unit and movable with respect to the floor surface. In a task air conditioning system in which the heat source integrated air conditioner is arranged inside the task area,
The heat source integrated air conditioner is placed in the task area with the floor face down in the task area,
A space in the task area facing an air supply outlet provided on the front side of the air conditioning unit is used as a main area, and the air supply outlet is arranged to face the main area for receiving temperature-controlled air, and , the heat source unit is positioned behind the supply air outlet, and a return air suction port provided on the rear side of the air conditioning unit corresponding to the rear side of the heat source unit is positioned within the task area with the supply air outlet. Located in a sub-area corresponding to the rear side and corresponding to a space other than the main area, or located in the ambient area in a range corresponding to the space directly above this sub-area,
a duct cover that generally covers the heat source unit such that an intake opening for blowing air to the heat source unit and an exhaust opening for exhausting air from the heat source unit are located in an ambient area directly above the task area, and / or provided across the ambient area immediately above the task area,
An energy-saving mode in which air drawn in from the return air suction port provided on the back surface of the air conditioning unit is returned from the sub-area, a ventilation mode in which air is introduced from the ambient area, or mixed air in the ambient area and the task area is used. A task air-conditioning system characterized by selecting at least one of energy-saving intermediate modes including suction ventilation.
The task air conditioning system according to claim 1,
(a) In the energy saving mode, after the air in the main area is mixed and air-conditioned, the air is circulated to the return air intake port of the air conditioning unit in the sub-area, and is again blown out from the supply air outlet into the main area. air circulation repeating said mixed air conditioning of an area;
(b) the ventilation mode introduces fresh air in the ambient area from the return air intake of the air conditioning unit and blows it out from the supply air outlet to the main area, and then mixed air-conditions the main area and then again; air circulation that discharges into the ambient area;
(c) said intermediate mode sucking the air mixture between said ambient area and said task area locates the return air inlet facing said sub-area in the upper area of the mixed air-conditioning layer by locating it near the boundary layer; Then, mixed air of return air flow from the main area with a light heat load and fresh air with a large heat load is sucked into the air conditioning unit, and the air blown out from the supply air outlet to the main area is an air circulation containing fresh air. be,
A task air conditioning system that includes any one of the above (a), (b), and (c).
Partitions are placed on the floor in a part of the large space provided in the building, and the space surrounded by the partitions is an air conditioning target area as a task area, and is positioned above the task area on the ceiling side and side surfaces. and a non-air-conditioned area having a space surrounding the task area as an ambient area,
A heat source integrated air conditioning system in which a heat source unit having a compressor and an air conditioning unit having a heat exchange function via a heat transfer medium with the heat source unit are mounted integrally with the heat source unit and movable with respect to the floor surface. A task air conditioning method in which the heat source integrated air conditioner is arranged inside the task area,
a step of placing the heat source integrated air conditioner in the task area with the floor face down in the task area;
A step of arranging a space in the task area facing an air supply outlet provided on the front side of the air conditioning unit as a main area so that the air supply outlet faces the main area that receives temperature-controlled air;
The heat source unit is positioned on the rear side of the supply air outlet, and the return air suction port provided on the rear side of the air conditioning unit corresponding to the rear side of the heat source unit is positioned within the task area of the supply air outlet. Positioning in a sub-area corresponding to the rear side and corresponding to a space other than the main area, or positioning in the ambient area in a range corresponding to the space directly above this sub-area;
a duct cover that generally covers the heat source unit such that an intake opening for blowing air to the heat source unit and an exhaust opening for exhausting air from the heat source unit are located in an ambient area directly above the task area, and/or providing from the task area to the ambient area immediately above,
An energy-saving mode in which air drawn in from the return air suction port provided on the back surface of the air conditioning unit is returned from the sub-area, a ventilation mode in which air is introduced from the ambient area, or mixed air in the ambient area and the task area is used. A task air-conditioning method characterized by selecting at least one of energy-saving intermediate modes including suction ventilation.
The method of task conditioning according to claim 3, comprising:
(a) In the energy saving mode, after the air in the main area is mixed and air-conditioned, the air is circulated to the return air suction port of the air conditioning unit in the sub-area, and is again blown out from the supply air outlet to the main area, and the air in the main area is a step of air circulation that repeats said mixed conditioning of the area;
(b) the ventilation mode introduces fresh air in the ambient area from the return air intake of the air conditioning unit and blows it out from the supply air outlet to the main area, and then mixed air-conditions the main area and then again; a step of air circulation discharging into the ambient area;
(c) said intermediate mode sucking the air mixture between said ambient area and said task area locates the return air inlet facing said sub-area in the upper area of the mixed air-conditioning layer by locating it near the boundary layer; The mixed air of the return air flow from the main area with a light heat load and the fresh air with a large heat load is sucked into the air conditioning unit, and the air blown out from the supply air outlet to the main area contains fresh air. step,
A task conditioning method including any one of the steps (a), (b), and (c) above.
Partitions are placed on the floor in a part of the large space provided in the building, and the space surrounded by the partitions is an air conditioning target area as a task area, and is positioned above the task area on the ceiling side and side surfaces. and a non-air-conditioned area having a space surrounding the task area as an ambient area,
A heat source unit having a compressor and an air conditioning unit having a heat exchange function via a heat transfer medium are mounted integrally with the heat source unit and movable with respect to the floor surface of the task area. In the heat source integrated air conditioner for stationary placement inside,
A space in the task area facing an air supply outlet provided on the front side of the air conditioning unit is used as a main area, and the air supply outlet is arranged to face the main area for receiving temperature-controlled air, and , the heat source unit is positioned behind the supply air outlet, and a return air suction port provided on the rear side of the air conditioning unit corresponding to the rear side of the heat source unit is positioned within the task area with the supply air outlet. Located in a sub-area corresponding to the rear side and corresponding to a space other than the main area, or located in the ambient area in a range corresponding to the space directly above this sub-area,
a duct cover that generally covers the heat source unit such that an intake opening for blowing air to the heat source unit and an exhaust opening for exhausting air from the heat source unit are located in an ambient area directly above the task area, and / or provided across the ambient area immediately above the task area,
An energy-saving mode in which air drawn in from the return air suction port provided on the back surface of the air conditioning unit is returned from the sub-area, a ventilation mode in which the air is introduced from the ambient area, or mixed air in the ambient area and the task area. A heat source-integrated air conditioner, wherein the height of the return air inlet is determined by one of energy-saving intermediate modes including ventilation for sucking in the air.
In the heat source integrated air conditioner according to claim 5, the height from the floor surface to the uppermost end of the supply air outlet or the blown air is h, and the height from the floor surface to the uppermost end of the partition A heat source integrated air conditioner having a relationship of h<H, where H is the height.

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