JPH04350444A - Air conditioner - Google Patents

Abstract

PURPOSE:To make it easily practical, in an office or the like where a plurality of indoor units are connected to one or more outdoor units in a manner of multi-split type air conditioning, to effect air conditioning with each person as a unit by a system wherein one or more indoor units are connected to some pieces of office furniture by means of ducts. CONSTITUTION:In a multi-split type air conditioner, a single outdoor unit 1 is connected to a plurality of indoor sits 2 by means of refrigerant piping 3 and also to a plurality of personal air-conditioning indoor units 4 arranged in parallel in the same manner as said indoor units 2. The personal air- conditioning indoor units 4 are installed in the space under the floor 5. On the other hand, pieces of office furniture such as desks 6 and partitions 7 are equipped with outlets and air ducts. Flexible ducts 11 as means of supplying conditioned air connect the personal air-conditioning indoor units 4 respectively to said office further 6, 7. An air flow-controlling device provided to each air conditioning piece of furniture 6, 7 enables the user to adjust the temperature to the most desirable point.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-type air conditioner, and more particularly to an air conditioner suitable for a system in which air conditioning is performed for each individual in buildings, offices, etc.

0002

2. Description of the Related Art The original purpose of air conditioners is to improve the thermal comfort of people inside a building. Looking at this in terms of the area within the building that is covered by air conditioning equipment, we first started with the central system where a single air conditioner provides air conditioning for the entire building, then moved to the floor system where air conditioning is installed on each floor. Now, install multiple indoor units on each floor,
There is a shift to multiple systems where air conditioning is done for each group. In this way, each air conditioner is responsible for a smaller area, making it possible to satisfy the comfort of residents in a more detailed manner.

[0003] On the other hand, there are the following problems regarding the air conditioning environment inside buildings. Because there is a difference in comfortable temperature between men and women (mainly due to differences in the amount of clothing worn), female workers often use lap blankets when cooling the air conditioner, the effects of sunlight from windows and hallways, and the effects of air conditioning equipment. There is a temperature distribution in the office due to the difference between the blowout and suction locations. Furthermore, although the use of OA in offices has recently progressed widely, OA
A problem has arisen in which the places where these devices are installed are locally heated due to exhaust heat from the devices. Additionally, to make it easier for office workers to work, desks are being separated with partitions and other partitions to create personal space. However, there are cases where partitions such as partitions are obstructing the flow of air from the air conditioner and deteriorating the air conditioned environment.

[0004] In order to solve these problems, an air conditioner that can air condition each individual in the office is required. For example, "heat pump heating and cooling" (No.
．． As described on page 10 of 34), an air heat exchanger is installed at the desk in the office, and hot and cold water is supplied to it from the cold source equipment, so that the air conditioning around the desk is suitable for the workers. There is an air conditioning system.

[0005] In addition, as described on pages 141 to 144 of the Society of Air Conditioning and Sanitary Engineering Academic Conference Proceedings (1989), there are In places with raised raised floors, the space under the floor can be used as a duct for air from air conditioners, and a large number of conditioned air outlets can be installed on the floor to control the direction of the air. There is an air conditioner that allows each individual to adjust the opening and opening level to suit themselves.

[0006]

SUMMARY OF THE INVENTION The conventional air conditioner described above has the following problems.

[0007] In a multi-type air conditioner, multiple indoor air conditioning units are installed on each floor, but the area covered by one of these units is quite wide, and the air conditioning conditions of each individual are different. There is.

[0008] Furthermore, in places such as intelligent buildings where a large number of computers and their terminals are installed, air conditioners that use cold and hot water, which are likely to leak water, are not used to protect these devices.

[0009] Furthermore, in tenant buildings, each tenant
Furthermore, each time the tenant changes, it is necessary to change the division of each floor, and the air conditioner needs to be flexible enough to accommodate this. In addition, the layout of desks and the like in an office frequently changes, so the air conditioner needs to be able to flexibly accommodate these changes. When each desk has indoor air conditioning equipment built into it, it is extremely difficult to change the piping that connects it to the outdoor cold/heat source equipment, making it difficult to change the layout of the desks.

[0010] Furthermore, in air conditioners that utilize free access floors as air conditioning ducts, indoor air conditioning equipment is often installed in the core of each floor, and conditioned air is blown out from there. For this reason, it is difficult to divide this floor for each tenant and provide independent air conditioning.

[0011] A first object of the present invention is to provide an air conditioner that can be easily installed and can be added to an existing air conditioner.

[0012] The second object of the present invention is to provide air conditioning suitable for each individual in a way that can flexibly respond to changes in the division of each tenant on each floor and to changes in the layout within an office. Our goal is to provide air conditioners that can.

[0013] A third object of the present invention is to provide an air conditioner with no fear of water leakage.

[0014]

[Means for Solving the Problems] In order to achieve the first object, the air conditioner of the present invention has a plurality of indoor air conditioning units connected to one outdoor unit used as a building air conditioner. Targeting multi-type air conditioners,
Some of these multiple indoor air conditioning units are installed under the floor or on the ceiling, and these air outlets are connected to partitions such as partitions and multiple office fixtures such as desks using flexible ducts. These office fixtures are configured to supply conditioned air to each individual. (Hereinafter, the indoor air conditioning unit connected to this office fixture will be referred to as a personal air conditioning unit.) In order to achieve the above second objective, the air conditioner of the present invention enables air conditioning to suit each person's preference. In order to do this, each office fixture is equipped with a terminal for controlling commands such as setting the temperature of the air blown out from the personal air conditioning unit and setting the air volume, and the personal air conditioning unit is equipped with a function to poll and average these control commands.

[0015] Furthermore, in order to achieve control linked to the entire air conditioning system, the output data of the control command terminal and the sensors that measure the environment can be connected to the outdoor unit's control device via the personal air conditioning unit's control device. It is something.

Furthermore, in order to automatically achieve comfortable air conditioning in each person's location, a sensor is installed to measure the surrounding environment, and the measured values of this sensor are used to adjust the indoor air conditioning according to a preset algorithm. This automatically determines the unit's air outlet temperature setting, air volume adjustment, etc.

Furthermore, in order to suppress fluctuations in the amount of air blown from each office fixture, the number of revolutions of the blower is adjusted and controlled.

[0018] Furthermore, in order to control the temperature of the air blown out of the personal air conditioning unit so that it is above a certain temperature during cooling and below a certain temperature during heating, air heat exchange within the personal air conditioning unit is performed. A throttle adjustment device is installed on the refrigerant outlet side of the container. Alternatively, an ambient air intake port and an intake amount adjusting device such as a damper are provided between the blower and the air heat exchanger of the personal air conditioning unit.

[0019] Furthermore, in order to adjust the air blown from the upper and lower parts of the office fixture, a device is provided near the office fixture for switching the air flow between the upper and lower parts and at the same time adjusting the air volume.

Furthermore, in order to improve the controllability of adjusting the flow rate of the refrigerant, an outlet through which a portion of the supplied air is bypassed is provided in a part of the office fixtures where the blown air does not directly hit people. It is something.

[0021] In order to achieve the above third object, the air conditioner of the present invention includes a sensor for determining the dew point of intake air or a dew condensation sensor to prevent dew condensation in the air heat exchanger in the personal air conditioning unit during cooling. The air heat exchanger is equipped with a throttle adjustment device on the refrigerant outlet side of the air heat exchanger.

[0022]

[Operation] First, the personal air conditioning unit supplies blown air individually to each individual from the outlet of the office fixtures around each individual via a flexible air duct. As a result, changes in the indoor layout can be easily accommodated by simply reconnecting or bending the air ducts, making it easy to install. Furthermore, for existing multi-air conditioning systems, it is only necessary to add several personal indoor air conditioning units, and the functionality of the existing air conditioning equipment can be easily improved. Furthermore, since the indoor air conditioning unit and multiple office fixtures are connected through flexible air ducts, changes in the indoor layout can be easily accommodated by simply changing or bending the air ducts.

Second, the personal air conditioning unit polls the commands from the control command terminal and averages them to set the blown air temperature, air volume, etc., so each person can make adjustments, and each individual can adjust their own requirements. air conditioning suitable for

[0024] Furthermore, the output data of the control command terminal and the sensor that measures the surrounding environment is sent to the control device of the outdoor unit via the control device of the personal air conditioning unit, and the control device of the outdoor unit is linked with the control of the overall air conditioning, thereby controlling the overall air conditioning. It becomes possible to issue a command to the air conditioning system in charge to change the set temperature distribution, making it easier to provide air conditioning that is suitable for each individual.

[0025] Furthermore, personal air conditioning units automatically control the outlet air temperature and air volume settings according to preset algorithms based on signals from sensors that measure the surrounding environment. Cold or warm air at the optimal temperature and speed is supplied from nearby office fixtures.

Furthermore, since the rotational speed of the blower is adjusted to maintain a constant static pressure of the air at the blower outlet of the indoor air conditioning unit, even if the air volume of each of the multiple office fixtures is adjusted, each Fluctuations in air volume from office fixtures are suppressed.

[0027] Furthermore, the air volume adjusting device installed near the office fixtures switches the air from the personal air conditioning unit to the upper or lower part of the office fixtures, and also controls the air volume blown out from the office fixtures based on commands from a control command terminal or the like. adjust.

[0028] In addition, an intake amount adjustment device such as an ambient air intake port and a damper provided between the blower and the air heat exchanger of the personal air conditioning unit takes in air from the surroundings and cools it with the air heat exchanger. Alternatively, by adjusting the mixing ratio with heated air, the air outlet temperature is controlled so that it is kept above a preset value during cooling operation, and below a separately set preset value during heating operation, so This prevents hot air from directly hitting the human body during heating and causing discomfort.

Further, a certain amount of air from the personal air conditioning unit is blown out around the office fixture from a bypass outlet provided in the office fixture. As a result, the processing air volume of the personal air conditioning unit is maintained above a certain value regardless of the adjustment of the air volume adjustment device, so the refrigerant flow rate is also maintained above a certain value, making it easier to control the refrigerant flow adjustment. will improve.

[0030] Furthermore, a variable throttle device installed on the outlet side of the refrigerant flow during cooling operation of the air heat exchanger in the indoor air conditioning unit controls the evaporation temperature during cooling of this heat exchanger, and the condensation temperature during heating. By changing the It is possible to avoid causing discomfort due to contact with the human body.

Thirdly, a throttling adjustment device is installed on the refrigerant outlet side of the air heat exchanger in the personal air conditioning unit to prevent dew condensation from occurring in the air heat exchanger based on the sensed value of the air humidity at the air heat exchanger inlet. Since the refrigerant evaporation temperature is controlled by adjusting the refrigerant outlet flow rate to prevent water leakage, water leakage can be prevented.

[0032]

Embodiment An embodiment of the present invention is shown in FIGS. 1 to 3.

FIG. 1 is a diagram showing a state in which a personal indoor air conditioning unit of the present invention is connected to a multi-type air conditioner. In a multi-type air conditioner, an outdoor unit 1 installed on the roof of a building and a plurality of indoor air conditioning units 2 are connected via refrigerant pipes 3. The personal indoor air conditioning unit 4 is connected in parallel to the piping system of this multi-type air conditioner in exactly the same way as the indoor units of the multi-type air conditioner. Here, the indoor air conditioning unit 4 of the multi-type air conditioner provides air conditioning for the entire floor, and basic temperature and humidity are adjusted thereby. In order to complement the overall air conditioning of this floor, the personal air conditioning unit 4 adjusts the temperature conditions preferred by each individual, which vary under various conditions.

[0034] The personal air conditioning unit 4 can be easily added to an existing multi-type air conditioner. In this case, there is no need to increase the capacity of the outdoor unit because the heating and cooling load of the building remains unchanged. The heating and cooling load will be shared between the existing indoor unit and the personal air conditioning unit. Furthermore, personal air conditioning units can be easily added to an air conditioner in which one indoor unit corresponds to one outdoor unit.

FIG. 2 shows the connection between this personal air conditioning unit 4 and office fixtures. The personal air conditioning unit 4 is installed, for example, in an underfloor space 5 provided for computer terminal wiring used in intelligent buildings. Suitable office fixtures to be connected to this are partitions such as desks 6 and partitions 7. This office fixture has 8 outlets.
, 9 and an air duct 10 are provided inside. Conditioned air is supplied from the personal air conditioning unit 4 to each individual at the location of the office equipment via the flexible duct 11 and the like. Each individual can obtain a temperature suitable for him/her by using the air volume adjustment device 12 provided on each office fixture.

[0036] Duct connections to office fixtures may be made for each individual office fixture, but if multiple units are laid out in a row, such as in partition 7, the air ducts in partition 7 may be connected to each other. The personal air conditioning unit 4 may be connected to supply conditioned air to one location in this group of partitions 7.

When the personal air conditioning unit 4 is installed on the ceiling, it is connected to the office fixtures 7 through an air duct 11 from the ceiling 13, as shown in FIG. The appearance of the connecting air duct 11 is designed to be in harmony with the interior design of the office. Furthermore, the air ducts 11 in each office fixture are configured to be interconnected, so that air is supplied to a group of office fixtures from one location. This eliminates problems in terms of appearance and space constraints, such as having multiple ducts descending from the ceiling to each office fixture.

When changing the layout in the office, the refrigerant pipe 3 connected to the personal air conditioning unit 4 is fixed, and the flexible air duct 11 that branches from there to the office fixtures can be easily bent or reconnected. This allows you to change the layout without any problems.

A control command terminal 14 is provided in each office fixture so that the temperature of the air blown from the personal air conditioning unit 4 and the air volume can be set, thereby making it possible to perform air conditioning suited to each individual's preference. One personal air conditioning unit 4 has multiple office fixtures (for example, about 10 units)
are connected, so the operation control commands from each are polled and the operation is controlled based on this average value. Furthermore, weighting may be set in advance for each operation control command terminal, and this may be used to perform control based on a weighted average value. As a result of the above, each individual's needs can be satisfied to the fullest.Furthermore, the surrounding temperature, humidity, airflow, radiant temperature, air quality, etc. can be A sensor 15 that measures one or more things, a sensor that detects whether there is a person within a certain distance, etc. are provided, and based on the sensing results, the start and stop of driving can be controlled.
To automatically determine set values for air volume and outlet temperature according to a preset algorithm. As this algorithm, for example, ISO 7730-19
PM, which is the evaluation value of thermal sensation shown in 84(E)
A method is used in which V (Predicted Mean Vote) makes thermal comfort neutral. With this, for example, when a person sits at a desk, cold or warm air can be automatically supplied from nearby office fixtures at the optimal temperature and wind speed.

The output data of the operation control command terminal 14 and the environment measurement sensor 15 are sent to the outdoor unit control device via the personal air conditioning unit control device, and are linked with the overall air conditioning control to perform more sophisticated air conditioning control. possible. As a result, for example, if the majority of operating commands from each office fixture indicate a lower temperature, a command can be issued to the air conditioning system responsible for overall air conditioning to lower the set temperature,
In addition, if commands are being issued that are uneven in location, it is determined that there is a significant temperature distribution, and a warning is issued, or in the case of multi-air conditioning, the set temperature of the unit in charge of each area is changed to change the temperature distribution. This makes it possible to issue commands such as:

[0041] The personal air conditioning unit 4 generates dew condensation water during cooling operation. In contrast, as shown in Figure 3,
A sensor 17 is provided to detect the relative humidity and temperature of the air 16 sucked into the personal air conditioning unit 4, or the absolute humidity, or the dew point itself, and a variable throttle such as an electric valve is provided at the refrigerant outlet of the air heat exchanger 18 during cooling. By providing and adjusting the device 19 separately from the throttle device 20 on the refrigerant inlet side, the evaporation temperature is controlled to be close to the dew point of the sucked air. This prevents dew condensation on the surface of the air heat exchanger.

As another means for preventing the formation of dew condensation water, as shown in FIG. is detected and the variable aperture device 19 is controlled to prevent dew condensation. As a result of the above, installation is possible even in places such as intelligent buildings where computer terminals should not be damaged due to water leakage. Furthermore, there is no need for a drain pump or drain piping for removing condensed water, which is normally required for indoor units, improving workability.

Another embodiment of the invention is shown in FIG. In this embodiment, as shown in FIG. 5, air outlets 8 and 9 are provided at the upper and lower parts of office fixtures such as a partition 7 and a desk, and an air volume adjustment device 12 is installed to adjust the air volume of each of the air outlets 8 and 9.
will be established. As a result, for example, air can be supplied mainly from the upper part during cooling operation, and air can be supplied mainly from the lower part during heating operation, so that heating and cooling with a cold head and feet can be performed.

Further, as shown in FIG. 3, a static pressure sensor 23 is provided at the outlet of the blower 22 of the personal air conditioning unit 4, and the rotation speed of the blower 22 is controlled so as to keep this static pressure constant. As a result, even if the air volume of each of the plurality of office fixtures connected to the personal air conditioning unit is adjusted, fluctuations in the air volume blown from each fixture can be significantly suppressed.

In addition, in order to adjust the air outlet temperature of the personal air conditioning unit above a certain temperature during cooling and below a certain temperature during heating, as shown in FIG. A variable throttle device 19 such as an electric valve is provided at the refrigerant outlet, and by adjusting the opening, the evaporation temperature of the refrigerant is controlled during cooling, and the condensation temperature of the refrigerant is controlled during heating. This makes it possible to adjust the evaporation temperature to a higher value during cooling and lower the condensation temperature during heating to satisfy each set value.

Alternatively, as shown in FIG. 4, an ambient air intake port 24 and an intake amount adjustment device 25 such as a damper are provided between the air heat exchanger 18 and the blower 22, and the heat exchanger 18 cools the air. By mixing heated air or heated air with ambient air, the top air temperature is adjusted to above a certain temperature during cooling and below a certain temperature during heating. Thereby, the temperature of the air blown from the personal air conditioning unit can be controlled to be equal to or higher than a preset temperature during cooling. Also, during heating, the temperature can be controlled to be below a preset temperature. As a result, during cooling, it is possible to prevent the low-temperature blown air from directly hitting the human body and causing an uncomfortable condition, unlike in a general air conditioning unit, and a comfortable condition at an appropriate temperature can be achieved. In addition, during heating, the opposite is true, which prevents excessively high temperature blown air from directly hitting the human body and causing discomfort.Furthermore, as shown in FIG. Bypassing the original air outlets 8 and 9, an air outlet 26 is provided at a place in the office fixtures where the air does not directly hit the human body even if air is emitted, and air is emitted from there. As a result, even if, for example, 9 out of 10 office fixtures are fully closed and only one fixture is in operation, a certain amount of air volume is ensured. It is possible to secure a flow rate of refrigerant corresponding to a certain amount or more. Therefore, the flow rate of the refrigerant can be adjusted smoothly. Further, even if the air volume adjustment device is frequently opened and closed, fluctuations in the air temperature in the area where the office fixtures having the air conditioning outlet are installed can be suppressed.

[0047]

[Effects of the Invention] According to the air conditioner of the present invention, the first target is a multi-type air conditioner in which a plurality of indoor air conditioning units are connected to one outdoor unit used as a building air conditioner. As a result, some of the indoor air conditioning units are placed under the floor or on the ceiling, and the air outlet is connected to partitions such as partitions, multiple office fixtures such as disks, and flexible ducts. Since the configuration is such that the air conditioned air is supplied to each individual from these office fixtures by connecting them, it is only necessary to add a few personal room air conditioning units to the existing multi-air conditioning system. This has the effect of making it easier to improve the functionality of air conditioning equipment. Further, even for a general air conditioner that has one outdoor unit and one indoor unit, a personal air conditioning unit can be added in parallel with the indoor unit. In addition, since the indoor air conditioning unit and multiple office fixtures are connected by flexible air ducts, changes in the indoor layout can be easily accommodated by simply reconnecting or bending the air ducts, resulting in good workability. be.

Second, the commands from the control command terminal are polled and further averaged to set the outlet air temperature and air volume, which has the effect of maximally satisfying the needs of each individual. There is. Since individual air conditioning air is supplied from the office fixtures and can be adjusted by each person, the effect is that air conditioning suitable for each person can be achieved.

[0049] Furthermore, in order to perform control in conjunction with the overall air conditioning system, the output data of the control command terminal and the sensor that measures the environment can be connected to the outdoor unit's control device via the personal air conditioning unit's control device. This makes it possible to issue a command to the air conditioning system responsible for overall air conditioning to change the set temperature distribution, which has the effect of making it easier to provide air conditioning that is suitable for each person.

[0050] Furthermore, the personal air conditioning unit automatically determines indoor temperature, air volume adjustment, etc. according to a preset algorithm based on signals from sensors that measure the surrounding environment. This has the effect of supplying cold or warm air at the optimal temperature and wind speed from nearby office fixtures.

[0051] In order to suppress fluctuations in the amount of air blown from each office fixture, the number of revolutions of the blower is adjusted and controlled, so even if the air volume of each of the plurality of office fixtures is adjusted, the amount of air blown from each office fixture will not change. Fluctuations in air volume can be suppressed.

[0052] In order to control the temperature of the air blown out of the personal air conditioning unit so that it is above a certain temperature during cooling and below a certain temperature during heating, the temperature of the air inside the personal air conditioning unit is A throttle adjustment device is provided on the refrigerant outlet side of the heat exchanger, or an intake amount adjustment device such as an ambient air intake and a damper is provided between the blower of the personal air conditioning unit and the air heat exchanger. Therefore, the blown air, which is low in temperature during cooling and high in temperature during heating, does not directly hit the human body, which has the effect of achieving a comfortable state at an appropriate temperature.

[0053] In addition, in order to adjust the air blown from the upper and lower parts of the office fixtures, a device is installed near the office fixtures that switches the air flow between the upper and lower parts and at the same time adjusts the air volume. Air can be supplied mainly from the upper part, and during heating operation mainly from the lower part, which has the effect of making it possible to cool the head and keep the feet warm.

[0054] Since the outlet through which a portion of the supplied air is bypassed is provided in a part of the office fixtures where the blown air does not directly hit people, there is no possibility that the air will hit people directly and cause discomfort. It can be prevented.

Thirdly, in order to prevent condensation during cooling in the air heat exchanger in the personal air conditioning unit, a sensor for determining the dew point of the intake air or a dew condensation sensor is provided, and a sensor is provided on the refrigerant outlet side of the air heat exchanger. Since the cooling device is equipped with a diaphragm device, it is controlled so that no condensation occurs during cooling operation, so there are no problems such as water leakage, and it can be installed in intelligent buildings where many computer terminals are installed, where water leakage accidents are a concern. There is.

[0056]

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an installed state of a personal air conditioning unit according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state of connection between a personal air conditioning unit and office fixtures.

FIG. 3 is a longitudinal sectional view showing the structure of the personal air conditioning unit.

FIG. 4 is a longitudinal sectional view showing another structure of the personal air conditioning unit.

FIG. 5 is a front view showing the structure of a partition.

FIG. 6 is a vertical cross-sectional view showing the structure of a partition.

[Explanation of symbols]

1...Outdoor unit, 2...Indoor unit of multi-air conditioner,
3... Refrigerant piping, 4... Personal air conditioning unit, 7... Partition, 11... Air duct, 8, 9... Outlet, 12
...Air volume adjustment device, 14...Control command terminal, 15...Ambient environment sensor, 18...Air heat exchanger, 19...Aperture adjustment device, 2
2...Blower, 17...Inlet air humidity sensor.

Claims (11)

[Claims] Claim 1: In a multi-type air conditioning system in which a plurality of indoor air conditioning units are connected to one or more outdoor units,
The air outlets of some of the indoor air conditioning units are connected via ducts to one or more office fixtures that have internal air ducts and air outlets. An air conditioner characterized in that it is configured to blow out conditioned air from an outlet of a fixture. 2. The air conditioner according to claim 1, wherein a control command terminal for setting the outlet temperature and adjusting air volume of an indoor air conditioning unit connected to the office fixture is built into the office fixture or installed near the office fixture. harmonization device. 3. The indoor air conditioning unit connected to the office fixtures polls control command values from a plurality of control command terminals of one or more of the office fixtures connected thereto, and uses the average value thereof. The air conditioner according to claim 2, wherein the air conditioner is operated using a command value or an average value using weighting set in advance for each control command terminal as a command value. 4. In the vicinity of the control command terminal, there is a sensor that measures one or more of the temperature and humidity of the surrounding environment, air flow, radiant temperature, and air quality, and whether there is a person within a certain distance. 4. The air conditioner according to claim 2 or 3, wherein a sensor is provided to detect whether or not the temperature is high, and the measured values of these sensors are used to automatically determine the air outlet temperature, air volume adjustment, etc. of the indoor air conditioning unit according to a preset algorithm. Device. 5. The air conditioner according to claim 4, wherein the output data of the control command terminal and the sensor for measuring the surrounding environment can be connected to the control device of the outdoor unit via the control device of the personal air conditioning unit. Device. [Claim 6] A variable throttle device is provided on the outlet side of the flow of refrigerant during cooling operation of the heat exchanger, and the temperature and relative humidity, absolute humidity, or dew point of the air at the inlet of the air heat exchanger of the air conditioning unit are sensed. 2. The evaporation temperature of the refrigerant is then adjusted by determining the range of the evaporation temperature of the refrigerant in which the air heat exchanger does not condense from this value and adjusting the variable throttle device to fall within this range. 4. The air conditioner according to 3 or 4. 7. A variable throttle device is provided on the outlet side of the refrigerant flow during cooling operation of the heat exchanger, and a dew condensation sensor is provided on or near the air heat exchanger of the air conditioning unit to sense dew condensation. 5. The evaporation temperature of the refrigerant is adjusted by determining the range of the evaporation temperature of the refrigerant in which the air heat exchanger does not condense from this value and adjusting the variable throttle device so as to fall within this range. The air conditioner described in . 8. An air switching and adjusting device is installed inside or near the office fixtures so that the air blown from the indoor air conditioning unit connected to the office fixtures can be blown from near the top or bottom of the office fixtures. The air conditioner according to claim 1, wherein the air conditioner is provided in a. 9. The control according to claim 1, wherein the static pressure of the air at the blower outlet of the indoor air conditioning unit connected to the fixtures in the office is maintained constant by adjusting the rotational speed of the blower. Air conditioner. 10. A variable throttle device is provided on the outlet side of the flow of refrigerant during cooling operation of the air heat exchanger in the indoor air conditioning unit, and by adjusting this, the evaporation temperature can be adjusted during cooling of the heat exchanger. Also, during heating, the condensing temperature is changed to control the air outlet temperature of the indoor air conditioning unit connected to office fixtures to be kept above a preset value during cooling operation, and below a separately set preset value during heating operation. The air conditioner according to claim 2, 3 or 4. 11. An air heat exchanger is provided with an ambient air intake port and an intake amount adjustment device such as a damper between the blower of the indoor air conditioning unit connected to the fixtures in the office and the air heat exchanger. By adjusting the mixing ratio of cooled or heated air and ambient air, the air outlet temperature of the indoor air conditioning unit connected to office fixtures can be set above a preset value during cooling operation, and separately set in advance during heating operation. The air conditioner according to claim 2, 3 or 4, wherein the air conditioner is controlled to maintain the air conditioner at a certain value or less.