JP2020067203A - Indoor air conditioning system - Google Patents

Abstract

To provide an indoor air conditioning system capable of performing any one of a dehumidification operation, an air blowing operation and a heating operation in accordance with a temperature condition and a humidity condition and optimally maintaining an indoor temperature and humidity environment.SOLUTION: An indoor air conditioning system 10 performs any one of a dehumidification operation in which cooled and dehumidified air cooled and dehumidified by a two-coil type heat pump air conditioner indoor unit 16a by using heat exchanged at a cooling coil 31 is reheated by using heat exchanged at a heating coil 32, an air blowing operation that does not use the heat exchanged at the cooling coil and the heating coil and a heating operation that does not use the heat exchanged at the cooling coil and uses the heat exchanged at the heating coil. A one-coil type heat pump air conditioner indoor unit 17a performs a cooling operation using the heat exchanged at the cooling coil. While the one-coil type heat pump air conditioner indoor unit continues the cooling operation, the dehumidification operation, the air blowing operation and the heating operation of the two-coil type heat pump air conditioner indoor unit are switched in accordance with an indoor set temperature condition and set humidity condition.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an indoor air conditioning system that adjusts temperature and humidity in a room by using a heat pump air conditioning device.

  An outdoor unit having a compressor, a four-way valve, an outdoor heat exchanger, and a plurality of indoor units are connected by a heat medium pipe to form a refrigeration cycle, and at least one of the plurality of indoor units is cooled and dehumidified. An operable multi-room air conditioner is disclosed (see Patent Document 1). This multi-room air conditioner prevents the temperature from becoming too cold and chilly even in the middle of cooling, and even when the indoor unit performing the cooling / dehumidifying operation and the indoor unit performing the cooling operation are mixed, the cooling operation and the Achieve stable operating conditions without degrading the cooling / dehumidifying operation performance.

  Further, an air conditioner having a cooling coil, an air conditioner having a heating coil and a cooling coil, a first blowout port provided directly above the operating table, and a second blowout port provided around the first blowout port. The first outlet blows air of 26 ° C. or higher higher than room temperature toward the operating table, and the second outlet blows air of lower temperature than room temperature directly below the operating table, There is disclosed an operating room air conditioning system in which the wind speed of the air blown from the inner portion of the air outlet is lower than the wind speed of the air blown from the outer portion (see Patent Document 2).

JP, 2006-194525, A JP, 2013-148241, A

  In large-scale hospital facilities, an air conditioner for outside air treatment is used in the middle of the air conditioning path that supplies outdoor air to the living room, and the air with a constant temperature and humidity control is sent to the living room to stabilize the temperature inside the living room. Humidity control is performed. On the other hand, in small and medium-sized hospital facilities, the temperature-controlled humidity outside air is often not supplied. In such a small-to-medium-sized hospital, the multi-room air conditioner disclosed in Patent Document 1 and the operating room air conditioning system disclosed in Patent Document 2 perform cooling by performing temperature control according to a dry-bulb temperature measurement value in the room. Operation, dehumidification operation (reheat dehumidification operation), and heating operation are performed. Therefore, if the air-blowing operation is performed by the measured indoor dry-bulb temperature during the rainy season or rainy weather in the interim period, if the indoor dry-bulb temperature is low, the cooling operation or dehumidifying operation is performed even if the indoor air has high humidity. It may cause discomfort to residents.

  The multi-room air conditioner disclosed in Patent Document 1 and the operating room air conditioning system disclosed in Patent Document 2 can perform cooling operation and dehumidifying operation at the same time, but dehumidify depending on indoor temperature and humidity conditions. It is not possible to switch from operation to blowing operation or heating operation, and unnecessary dehumidification operation may continue regardless of the temperature and humidity in the room. There is a case where the humidity in the room deviates from an appropriate humidity and the temperature in the room deviates from an appropriate temperature, so that the room temperature and humidity environment cannot be optimally maintained. Further, there are cases in which the heating operation for raising the temperature inside the room cannot be performed, and the temperature environment inside the room cannot be optimally maintained when the temperature inside the room is low. Further, since the dehumidifying operation is performed when the dehumidifying operation is unnecessary, useless heat energy is consumed in the heating coil, and energy saving cannot be achieved.

  An object of the present invention is to perform any of dehumidifying operation, blowing operation, cooling operation, and heating operation in accordance with temperature conditions and humidity conditions, and which is capable of optimally maintaining a room temperature and humidity environment. To provide a system. Another object of the present invention is to provide an indoor / outdoor heat pump system that can raise the indoor temperature with dehumidification when the indoor temperature is low, and can optimally maintain the indoor temperature environment. To provide an air conditioning system. Another object of the present invention is to provide an indoor air conditioning system capable of saving energy by stopping heat exchange between a cooling coil and a heating coil when cooling and dehumidifying are not required.

  The premise of the present invention for solving the above problems is a two-coil heat pump air conditioner indoor unit having a heating coil and a cooling coil, a one-coil heat pump air conditioner indoor unit having a cooling coil, and a two-coil heat pump air conditioner. A two-coil heat pump air conditioner indoor unit using a heat pump air conditioner composed of an indoor unit and a one-coil heat pump air conditioner indoor unit and a cooling / heating simultaneous operation type heat pump air conditioner outdoor unit that sends back a heat transfer medium fluid through a heat transfer medium pipe. And a one-coil type heat pump air conditioner indoor unit are installed in the same room, and the temperature and humidity inside the room are adjusted by operating the heat pump air conditioner.

  As a feature of the present invention based on the above-mentioned premise, a two-coil type heat pump air conditioner indoor unit dehumidification operation in which the cooling dehumidified air cooled and dehumidified by using the exchange heat of the cooling coil is reheated by using the exchange heat of the heating coil. And a heating operation using the exchange heat of the heating coil without using the exchange heat of the heating coil and the cooling coil and the heating operation using the exchange heat of the heating coil without using the exchange heat of the cooling coil. The indoor unit performs cooling operation using the exchange heat of the cooling coil, and in the indoor air conditioning system, the one-coil heat pump air conditioner indoor unit continues to operate in the front chamber, depending on the set temperature condition and set humidity condition of the room. The two-coil type heat pump air conditioner indoor unit switches between dehumidifying operation, blowing operation, and heating operation.

  As an example of the present invention, the indoor air conditioning system includes a dew point temperature sensor for measuring the indoor dew point temperature, and compares the measured dew point temperature of the room measured by the dew point temperature sensor with a preset set dew point temperature, and measures the dew point temperature. When the dew point temperature is higher than the set dew point temperature, the two-coil type heat pump air conditioner indoor unit performs dehumidifying operation and the one coil type heat pump air conditioner indoor unit performs cooling operation. When the dew point temperature is lower than the set dew point temperature, the two-coil heat pump air conditioner indoor unit performs the blowing operation and the one coil heat pump air conditioner indoor unit performs the cooling operation, and the measured dew point temperature is set to the set dew point temperature. If the temperature is lower than the above, and the temperature is low, the 2-coil type heat pump air conditioner indoor unit performs heating operation and the 1-coil type Split pump air conditioner indoor unit is performing the third air conditioning means for performing cooling operation.

  As another example of the present invention, a plurality of two-coil first to n-th heat pump air conditioner indoor units and a plurality of one-coil first to n-th heat pump air conditioner indoor units are installed in a room, In the first air conditioning unit, the two-coil first to nth heat pump air conditioner indoor units perform dehumidifying operation, and the one-coil first to nth heat pump air conditioner indoor units perform cooling operation, and in the second air conditioning unit The first to n-th heat pump air conditioner indoor units of the two-coil type perform the blowing operation, and the first to n-th heat pump air conditioner indoor units of the one-coil type perform the cooling operation. The first to nth heat pump air conditioner indoor units perform heating operation, and the one-coil first to nth heat pump air conditioner indoor units perform cooling operation.

  As another example of the present invention, the dew-point temperature sensor is provided in the vicinity of the indoor air intake port inside the two-coil heat pump air conditioner indoor unit of any of the two-coil first heat pump air conditioner indoor units. The indoor air inside the two-coil heat pump air conditioner indoor unit, which is installed, measures the dew point temperature near the indoor air intake inside the two coil heat pump air conditioner indoor unit, and the indoor air conditioning system measures by the dew point temperature sensor. The measured dew point temperature in the vicinity of the intake port is compared with a preset dew point temperature, and any one of the first to third air conditioning means is implemented.

  As another example of the present invention, an indoor air conditioning system is provided in the vicinity of an indoor air intake port inside a two-coil heat pump air conditioner indoor unit of any of the two coil first to nth heat pump air conditioner indoor units. Includes a dry-bulb temperature sensor that is installed to measure the dry-bulb temperature, and measures the dry-bulb temperature near the indoor air intake inside the indoor unit of a two-coil heat pump air conditioner measured by the dry-bulb temperature sensor and preset settings. Compared with the dry-bulb temperature, if the measured dew-point temperature is lower than the set dew-point temperature and the measured dry-bulb temperature is higher than the set dry-bulb temperature, the two-coil type 1st to n-th heat pump air conditioner indoor units perform the blow operation. In addition, the 1-coil type 1st to n-th heat pump air conditioner indoor units perform cooling operation, the measured dew point temperature is lower than the set dew point temperature, and the measured dry bulb temperature is It is lower than the set dry-bulb temperature, along with two-coil first to n heat pump air conditioner indoor unit of performing heating operation, first coil-type first to n heat pump air conditioner indoor unit of performing cooling operation.

  As another example of the present invention, the room is an operating room, and the two-coil type first to nth heat pump air conditioner indoor units and the one-coil type first to nth heat pump air conditioner indoor units are the operating room. It is installed inside the operating room to surround the operating table.

  As another example of the present invention, in the indoor air conditioning system, the two-coil type first to nth heat pump air conditioner indoor units and the one coil type first to nth heat pump air conditioner indoor units are floor-standing type, and the same number of A two-coil type first to nth heat pump air conditioner indoor unit and a one-coil type first to nth heat pump air conditioner indoor unit are installed in a corner or end or inside a wall of an operating room, and a two-coil type first unit. Air-conditioned air produced by the n-th heat pump air conditioner indoor unit and the 1-coil first to n-th heat pump air conditioner indoor units is supplied from the ceiling of the operating room.

  As another example of the present invention, an indoor air conditioning system is provided in the vicinity of an indoor air intake port inside a two-coil heat pump air conditioner indoor unit of any of the two coil first to nth heat pump air conditioner indoor units. Includes a second dry-bulb temperature sensor that is installed and used for proportional control of the first to n-th heat pump air conditioner indoor units of the 1-coil type, and includes a dew-point temperature sensor, a first dry-bulb temperature sensor, and a second dry-bulb temperature sensor. The dry-bulb temperature sensor is installed near the indoor air intake inside the same two-coil heat pump air conditioner indoor unit.

  According to the indoor air conditioning system of the present invention, the two-coil type heat pump air conditioner indoor unit dehumidifies the cooling dehumidified air that has been cooled and dehumidified using the exchange heat of the cooling coil, and reheats it using the exchange heat of the heating coil. And a heating operation using the exchange heat of the heating coil without using the exchange heat of the heating coil and the cooling coil and the heating operation using the exchange heat of the heating coil without using the exchange heat of the cooling coil. The indoor unit performs a cooling operation using the exchange heat of the cooling coil, and the one-coil heat pump air conditioner indoor unit continues the cooling operation, while the two-coil heat pump air conditioner responds to the indoor set temperature condition and set humidity condition. Since the dehumidifying operation, the blowing operation, and the heating operation of the indoor unit are switched, the two-coil type heat pump air conditioner indoor unit The switching mode can be switched, and the 1-coil type heat pump air conditioner indoor unit performs cooling / cooling operation, and the 2-coil type heat pump air conditioner indoor unit can perform dehumidification operation, blow operation, or heating operation to dehumidify. The indoor humidity does not drop more than necessary due to continuous operation, the indoor humidity does not deviate from the appropriate humidity and the indoor temperature does not deviate from the appropriate temperature, and the indoor temperature and humidity environment is optimized. Can be held at. In the indoor air conditioning system, the two-coil type heat pump air conditioner indoor unit can perform the heating operation to raise the indoor temperature, so that the indoor temperature can be raised when the indoor temperature is low, and the indoor temperature environment Can be optimally held. When the cooling / dehumidification is not required, the indoor air conditioning system performs either a blowing operation that does not use the exchange heat of the heating coil and the cooling coil or a heating operation that uses the exchange heat of the heating coil without using the exchange heat of the cooling coil. As a result, the use of exchanged heat in the cooling coil or the heating coil is stopped, so that wasteful thermal energy is not consumed in the cooling coil or the heating coil, and energy saving of the system can be achieved. Since the indoor air conditioning system uses a heat pump type heat source instead of an electric heater for reheating for cooling and dehumidifying, energy saving can be achieved as compared with a system using an electric heater with large power consumption.

  Including a dew point temperature sensor that measures the dew point temperature in the room, compares the measured dew point temperature in the room measured by the dew point temperature sensor with the preset dew point temperature, and if the measured dew point temperature is higher than the set dew point temperature, 2 When the coil type heat pump air conditioner indoor unit performs the dehumidifying operation and the one coil type heat pump air conditioner indoor unit performs the cooling operation, and the measured dew point temperature is lower than the set dew point temperature, the two coil type When the heat pump air conditioner indoor unit performs the blowing operation and the one coil type heat pump air conditioner indoor unit performs the cooling operation, the second air conditioning means is implemented, and the measured dew point temperature is lower than the set dew point temperature, and the temperature is low, the two coil type The heat pump air conditioner indoor unit of this unit performs heating operation, and the one-coil type heat pump air conditioner indoor unit performs cooling operation. An indoor air conditioning system that implements an air conditioning unit includes a first air conditioning unit that performs a dehumidifying operation in a two-coil heat pump air conditioner indoor unit according to a measured dew point temperature in a room measured by a dew point temperature sensor, and a two coil heat pump air conditioner indoor unit. In the two-coil heat pump air-conditioner room, either the second air-conditioning means performing the air-blowing operation or the third air-conditioning means performing the heating operation in the two-coil heat pump air-conditioner indoor unit is executed according to the dew point temperature in the room. The operation mode of the machine can be switched, and by performing the cooling operation in the one-coil heat pump air conditioner indoor unit and performing any of the dehumidifying operation, the blowing operation, and the heating operation in the two-coil heat pump air conditioner indoor unit, If the dehumidifying operation continues, the indoor humidity will drop more than necessary. The indoor humidity does not deviate from the appropriate humidity and the indoor temperature does not deviate from the appropriate temperature, and it is possible to create a good temperature and humidity environment with well-balanced temperature and humidity. The environment can be maintained optimally. The indoor air-conditioning system can raise the indoor temperature when the indoor temperature is low by performing the heating operation to raise the indoor temperature by the two-coil type heat pump air conditioner indoor unit, which optimizes the indoor temperature environment. Can be held at. The indoor air conditioning system may not require the cooling / dehumidifying operation depending on the indoor dew point temperature measured by the dew point temperature sensor. In that case, the two-coil heat pump air conditioner indoor unit uses the exchange heat of the heating coil and the cooling coil. Do not use the exchange heat in the cooling coil or the heating coil by performing either the blowing operation or the heating operation using the exchange heat of the heating coil without using the exchange heat of the cooling coil. Wasteful heat energy is not consumed in the heating coil and the heating coil, and the energy saving of the system can be achieved.

  A plurality of two-coil first to n-th heat pump air conditioner indoor units and a plurality of one-coil first to n-th heat pump air conditioner indoor units are installed indoors, and the first air-conditioning unit has a two-coil type The first to n-th heat pump air conditioner indoor units perform dehumidifying operation, the 1-coil first to n-th heat pump air conditioner indoor units perform cooling operation, and the second air-conditioning unit operates the 2-coil first to n-th The heat pump air conditioner indoor unit performs a blowing operation, the 1-coil type first to nth heat pump air conditioner indoor units perform a cooling operation, and the second coil type first to nth heat pump air conditioner indoor units operate in the third air conditioning means. In the indoor air conditioning system in which the heating operation is performed and the first to n-th heat pump air conditioner indoor units of the one coil type perform the cooling operation, the measured dew point temperature is higher than the set dew point temperature. If it is also high, in the first air conditioning means, the two-coil type first to nth heat pump air conditioner indoor units perform dehumidifying operation, and the one coil type first to nth heat pump air conditioner indoor units perform cooling operation, and the measured dew point is obtained. When the temperature is lower than the set dew point temperature, in the second air conditioning means, the two-coil type first to nth heat pump air conditioner indoor units perform the blowing operation, and the one coil type first to nth heat pump air conditioner indoor units are cooled. When the operation is performed and the measured dew point temperature is lower than the set dew point temperature and the temperature is low, the two-coil type first to nth heat pump air conditioner indoor units perform heating operation and the one-coil type first in the third air conditioning unit. Since the first to nth heat pump air conditioner indoor units perform cooling operation, the two coil type first to nth heat pump air conditioner indoor units are operated according to the dew point temperature of the room. Switching modes can be switched, and cooling operation is performed in the 1-coil type first to nth heat pump air conditioner indoor units, and dehumidification operation, blow operation and heating operation are performed in the 2-coil type 1st to nth heat pump air conditioner indoor units. By performing any of the above, the indoor humidity will not drop more than necessary due to the continuous dehumidification operation, and the indoor humidity will not deviate from the appropriate humidity and the indoor temperature will not deviate from the appropriate temperature. In addition, it is possible to create a temperature / humidity environment within the design range and optimally maintain the room temperature / humidity environment. The indoor air conditioning system can raise the indoor temperature when the indoor temperature is low by performing the heating operation in which the two-coil first to nth heat pump air conditioner indoor units raise the indoor temperature. The temperature environment can be optimally maintained. The indoor air conditioning system may not require dehumidifying operation depending on the dew point temperature of the room measured by the dew point temperature sensor. In that case, the 2-coil type first to nth heat pump air conditioner indoor units are equipped with heating coils and cooling coils. Stop the use of exchange heat in the cooling coil or heating coil by performing either the blowing operation that does not use the exchange heat or the heating operation that uses the exchange heat of the heating coil without using the exchange heat of the cooling coil. Therefore, wasteful thermal energy is not consumed in the cooling coil and the heating coil, and the energy saving of the system can be achieved.

  The dew point temperature sensor is installed in the vicinity of the indoor air intake inside the two-coil type heat pump air conditioner indoor unit of the two-coil type first to nth heat pump air conditioner indoor units, and the two-coil heat pump air conditioner indoor Two-coil heat pump air conditioner inside the unit, which measures the dew point temperature near the indoor air intake port, and the measured dew point temperature near the indoor air intake port inside the indoor unit and the preset dew point temperature. And an indoor air conditioning system that implements any of the first to third air conditioning means, any one of the first to nth heat pump air conditioner indoor units of the two-coil type using a dew point temperature sensor. The dew point temperature near the indoor air intake inside the two-coil heat pump air conditioner indoor unit By being set, the dew point temperature sensor measures an optimum and accurate dew point temperature to be compared with the set dew point temperature, and the first air conditioning unit, the second air conditioning unit, and the third air conditioning unit are operated according to the measured dew point temperature. Therefore, the temperature and humidity environment within the design range can be created, and the room temperature and humidity environment can be optimally maintained.

  A dry-bulb temperature sensor for measuring the dry-bulb temperature, which is installed in the vicinity of the indoor air intake port inside the 2-coil type heat pump air conditioner indoor unit out of the 2-coil type first to nth heat pump air conditioner indoor units. Included, the dry-bulb temperature sensor measures the dry-bulb temperature near the indoor air intake inside the two-coil heat pump air conditioner indoor unit and the preset dry-bulb temperature, and the measured dew point temperature is the set dew point. When the measured dry-bulb temperature is lower than the temperature, and the measured dry-bulb temperature is higher than the set dry-bulb temperature, the two-coil type first to nth heat pump air conditioner indoor units perform blow operation and the one-coil type first to nth heat pump air conditioners When the indoor unit performs cooling operation, the measured dew point temperature is lower than the set dew point temperature, and the measured dry-bulb temperature is lower than the set dry-bulb temperature, the two-coil type first In the indoor air conditioning system in which the n-th heat pump air conditioner indoor unit performs heating operation and the 1-coil first to n-th heat pump air conditioner indoor units perform cooling operation, the measured dew point temperature is lower than the set dew point temperature. When the temperature is higher than the set dry-bulb temperature, the two-coil type 1st to nth heat pump air conditioner indoor units can prevent the temperature rise in the room by performing the blowing operation, and the measured dew point temperature is higher than the set dew point temperature. When the measured dry-bulb temperature is lower than the set dry-bulb temperature, the two-coil first to nth heat pump air conditioner indoor units can raise the indoor temperature by performing the heating operation. The humidity does not deviate from the proper humidity and the room temperature does not deviate from the proper temperature, and the temperature and humidity environment within the design range can be created, and the indoor temperature and humidity environment is optimally maintained. Rukoto can.

  The room is an operating room, and the two-coil type first to nth heat pump air conditioner indoor units and the one-coil type first to nth heat pump air conditioner indoor units surround the operating table in the operating room. The indoor air conditioning system installed in the room is a 1-coil type 1st to n-th heat pump air conditioner indoor unit performing cooling operation and a 2-coil type 1st to n-th heat pump air conditioner indoor unit according to the indoor dew point temperature. Can perform dehumidifying operation, blowing operation, or heating operation to create a temperature / humidity environment within the design range in the operating room, and optimize the temperature / humidity environment in the operating room. , Medical personnel can perform surgery and treatment in a favorable temperature and humidity environment.

  The two-coil first to nth heat pump air conditioner indoor units and the one-coil first to nth heat pump air conditioner indoor units are floor-standing type, and the same number of two-coil first to nth heat pump air conditioner indoor units. And 1-coil type first to n-th heat pump air conditioner indoor units are installed in the corners or edges or walls of the operating room, and 2-coil type 1-n heat pump air conditioner indoor units and 1-coil type first unit. The indoor air conditioning system in which the conditioned air created by the 1st to nth heat pump air conditioner indoor units is supplied from the ceiling of the operating room is a two-coil type 1st to nth heat pump air conditioner indoor unit The coil type first to n-th heat pump air conditioner indoor units perform cooling operation, and the same number of floor-standing 2-coil type as the 1-coil type first to n-th heat pump air conditioner indoor units. The 1st to n-th heat pump air conditioner indoor units perform any of dehumidifying operation, air blowing operation, and heating operation according to the dew point temperature of the room, whereby a temperature and humidity environment within the design range can be created in the operating room. The temperature and humidity environment inside the room can be optimized, and the medical staff can perform surgery and treatment in a good temperature and humidity environment. The indoor air-conditioning system has a 2-coil type first to n-th heat pump air conditioner indoor unit and a 1-coil type first to n-th heat pump air conditioner indoor unit installed at a corner or end of the operating room or inside a wall. The indoor units do not interfere, and the medical staff can perform surgery and treatment in a good working environment in which the temperature and humidity environment is well prepared.

  1-n type heat pump air conditioner installed in the vicinity of the indoor air intake inside the 2-coil type heat pump air conditioner indoor unit out of the 2 coil type 1st to nth heat pump air conditioner indoor units. A two-coil heat pump air conditioner including a second dry-bulb temperature sensor for measuring the dry-bulb temperature used for proportional control of an indoor unit, and having the same dew point temperature sensor, first dry-bulb temperature sensor and second dry-bulb temperature sensor In the indoor air conditioning system installed near the indoor air intake inside the indoor unit, the dew point temperature sensor, the first dry-bulb temperature sensor, and the second dry-bulb temperature sensor are installed inside different heat pump air conditioner indoor units. Temperature control (proportional control) is performed, the operation of the indoor unit of the heat pump air conditioner will malfunction (for example, those heat pump air conditioner The temperature control of the internal unit becomes unstable, and the cooling operation and the heating operation may be biased toward a specific heat pump air conditioner indoor unit.) However, the dew point temperature sensor, the first dry-bulb temperature sensor, and the second dry-bulb temperature sensor Are installed inside the same two-coil heat pump air conditioner indoor unit, and temperature control is performed based on the temperature measured by those temperature sensors, so that the temperature control of those heat pump air conditioner indoor units can be stabilized, and cooling operation can be performed. It is possible to prevent unevenness of the heating operation to a specific heat pump air conditioner indoor unit, and optimally maintain the indoor temperature and humidity environment.

The side view of the operating room shown as an example which installed the indoor air conditioning system. The top view of the operating room in which the indoor air conditioning system was installed. The side view which shows an example of an internal structure of a 1st and 2nd heat pump air conditioner indoor unit of 2 coil type. The side view which shows an example of the internal structure of the 1st coil type 1st and 2nd heat pump air conditioner indoor unit. The figure which displayed an example of control in an indoor air conditioning system. The flowchart explaining an example of operation | movement which an indoor air conditioning system performs at the time of low temperature of a high humidity environment, summer, winter, and an intermediate period. The flowchart which continues from FIG.

  Details of the indoor air conditioning system according to the present invention will be described below with reference to the accompanying drawings such as FIG. 1 which is a side view of an operating room 15 in which the indoor air conditioning system 10 is installed. 2 is a top view of the operating room 15 in which the indoor air conditioning system 10 is installed, and FIG. 3 is a side view showing an example of the internal structure of the two-coil type first and second heat pump air conditioner indoor units 16a, 16b. It is a figure. FIG. 4 is a side view showing an example of the internal structure of the one-coil first and second heat pump air conditioner indoor units 17a, 17b. In FIG. 2, the simultaneous heating / cooling type heat pump air conditioner outdoor unit 18 is omitted.

  The indoor air conditioning system 10 uses a heat pump air conditioner 11, a dew point temperature sensor 12 (see FIG. 3), a first dry-bulb temperature sensor 13 (see FIG. 3), and a second dry-bulb temperature sensor 14 (see FIG. 3). The temperature and humidity inside the operating room 15 are adjusted. The indoor air conditioning system 10 can be constructed not only in the operating room 15 but also in any room that requires air conditioning, and the temperature and humidity inside the rooms can be adjusted.

  The heat pump air conditioner 11 includes two two-coil type first and second heat pump air conditioner indoor units 16a and 16b (refrigerant reheat type air conditioner indoor units) (two coil type first to nth heat pump air conditioner indoor units). It is composed of two 1-coil type first and second heat pump air conditioner indoor units 17a and 17b (1 coil type 1st to n-th heat pump air conditioner indoor units) and a simultaneous heating and cooling type heat pump air conditioner outdoor unit 18. There is. The heat pump air conditioner 11 includes two coil type first and second heat pump air conditioner indoor units 16a and 16b, one coil type first and second heat pump air conditioner indoor units 17a and 17b, and a simultaneous heating and cooling type heat pump air conditioner outdoor unit 18. Simultaneous operation of cooling and heating is performed using.

  A ceiling-embedded air supply unit 20 is attached to the ceiling 19 of the operating room 15. A controller 21 is installed in the wall of the operating room 15, and an operation panel 22 connected to the controller 21 is attached to the inner wall of the operating room 15. The controller 21 is a physical computer that has a central processing unit (CPU or MPU) and memory (main memory and cache memory) and operates by an independent operating system (OS). ing.

  In the large-capacity storage area of the controller 21, the correlation between the temperature and humidity inside the operating room 15 and the dew point temperature is stored (stored) (correlation storage means). In the mass storage area of the controller 21, the set dew point temperature inside the operating room 15 is stored (stored), and the set dry bulb temperature inside the operating room 15 is stored (stored).

  Although not shown, the operation panel 22 displays an air conditioner ON / OFF button and a temperature setting button. When the air conditioner ON button on the operation panel 22 is tapped, the heat pump air conditioner 11 is activated, and when the air conditioner OFF button is tapped, the heat pump air conditioner 11 is stopped. By tapping the temperature setting button, the temperature inside the operating room 15 can be set.

  The air supply unit 20 has an outside air duct 23 that takes in outside air, a first air supply duct 24 into which the conditioned air created by the two-coil type first and second heat pump air conditioner indoor units 16a and 16b flows, and one coil. The second air supply duct 25 into which the conditioned air produced by the first and second heat pump air conditioner indoor units 17a and 17b of the formula flows in is connected. Outside air flows into the air supply unit 20 through the outside air duct 23, and the conditioned air created by the two-coil first and second heat pump air conditioner indoor units 16a, 16b is supplied through the first air supply duct 24. While flowing into the unit 20, the conditioned air produced by the one-coil first and second heat pump air conditioner indoor units 17a and 17b flows into the air supply unit 20 through the second air supply duct 25.

  A HEPA filter 26 is installed inside the air supply unit 20. The conditioned air produced by the two-coil first and second heat pump air conditioner indoor units 16a, 16b and the one-coil first and second heat pump air conditioner indoor units 17a, 17b is passed through the HEPA filter 26 and then Air is supplied from the air outlet of the air supply unit 20 and is supplied into the room of the operating room 15 from the ceiling 19 of the operating room 15 toward the floor 27.

  The cooling / heating simultaneous operation type heat pump air conditioner outdoor unit 18 has its controller (not shown) connected to the controller 21 by a signal line (not shown). A heat medium pipe 28 is connected to the cooling / heating simultaneous operation heat pump air conditioner outdoor unit 18. The heat medium pipe 28 extending from the cooling / heating simultaneous operation heat pump air conditioner outdoor unit 18 is connected to a branch unit 29 (see FIG. 2) installed outside the operating room 15.

  The two-coil first and second heat pump air conditioner indoor units 16a and 16b are the same number of two units as the one-coil first and second heat pump air conditioner indoor units 17a and 17b. The two-coil type first and second heat pump air conditioner indoor units 16a, 16b are floor-standing type and are in the operating room 15 (the same room) so as to surround an operating table (not shown) in the operating room 15. It is installed in.

  As shown in FIG. 2, the two-coil type first heat pump air conditioner indoor unit 16a and the two-coil type second heat pump air conditioner indoor unit 16b are the two-coil type first and second heat pump air conditioner indoor units 16a and 16b. Are installed at the corners (corners or edges) of the operating room 15 so as to face each other in a diagonal direction. The two-coil type first and second heat pump air conditioner indoor units 16a and 16b may be installed inside the wall of the operating room 15. The number of two-coil heat pump air conditioner indoor units is not limited, and three or more two-coil heat pump air conditioner indoor units surround the operating table of the operating room 15 depending on the volume of the air conditioning space of the operating room 15. It may be installed at the corner or edge of the room or inside the wall.

  The two-coil first heat pump air conditioner indoor unit 16a and the two-coil second heat pump air conditioner indoor unit 16b are provided in a housing 30 (casing), a cooling coil 31 housed in the housing 30, and a housing 30. The heating coil 32 is housed, the blower fan 33 is housed in the housing 30, and the drain pan 34 is housed in the housing 30. The control units 35 of the two-coil first and second heat pump air conditioner indoor units 16a and 16b are connected to the controller 21 by signal lines (not shown).

  The housings 30 of the two-coil type first and second heat pump air conditioner indoor units 16a and 16b are hexahedrons having front and rear walls, top and bottom walls, and both side walls. An indoor air intake 36 is formed in the lower part of the front wall of the housing 30, and an air outlet 37 is formed in the top wall of the housing 30. The first air supply duct 24 connected to the air supply unit 20 is connected to the air outlet 37 of the housing 30.

  A cooling coil heating medium pipe 38 extending from the branch unit 29 is connected to the cooling coils 31 of the two-coil first and second heat pump air conditioner indoor units 16a and 16b. The heating coil 32 of the two-coil type first and second heat pump air conditioner indoor units 16a, 16b is connected to a heating coil heating medium pipe 39 extending from the branch unit 29.

  A cooling coil heating medium pipe 38 extending in the vicinity of the cooling coil 31 turns ON / OFF the inflow of the heating medium fluid into the cooling coil 31 and adjusts the inflow amount of the heating medium fluid into the cooling coil 31. A control valve (not shown) is installed. The heating coil heating medium pipe 39 extending in the vicinity of the heating coil 32 turns ON / OFF the inflow of the heating medium fluid into the heating coil 32 and adjusts the inflow amount of the heating medium fluid into the heating coil 32. A control valve (not shown) is installed.

  The blower fan 33 is installed directly below the top wall of the housing 30, and causes the conditioned air created by the two-coil first and second heat pump air conditioner indoor units 16a and 16b to flow into the first air supply duct 24. The drain pan 34 is installed immediately below the cooling coil 31, collects water droplets dropped from the cooling coil 31, and drains the water droplets to the outside.

  The two-coil type first heat pump air conditioner indoor unit 16a and the two-coil type second heat pump air conditioner indoor unit 16b have a dehumidifying operation in which they are cooled and dehumidified by the exchange heat of the cooling coil 31 and then reheated by the exchange heat of the heating coil 32. One of a blowing operation that does not use the replacement heat of the cooling coil 31 and the replacement heat of the heating coil 32, and a heating operation that does not use the replacement heat of the cooling coil 31 but uses the replacement heat of the heating coil 32. In the dehumidifying operation, the heat transfer fluid flows through the cooling coil 31 and the heating coil 32. In the blowing operation, the flow of the heat medium fluid into the cooling coil 31 and the heating coil 32 is stopped. In the heating operation, the heat transfer fluid flows through the heating coil 32, and the flow of the heat transfer fluid into the cooling coil 31 is stopped.

  The 1-coil type first and second heat pump air conditioner indoor units 17a, 17b are the same number as the 2-coil first and second heat pump air conditioner indoor units 16a, 16b. The 1-coil type first and second heat pump air conditioner indoor units 17a, 17b are floor-standing type and are installed in the operating room 15 (in the same room) so as to surround the operating table of the operating room 15. .

  The 1-coil type first heat pump air conditioner indoor unit 17a and the 1-coil type second heat pump air conditioner indoor unit 17b are, as shown in FIG. 2, the 1-coil type first and second heat pump air conditioner indoor units 17a, 17b. Are installed at the corners (corners or edges) of the operating room 15 so as to face each other in a diagonal direction. Note that the one-coil first and second heat pump air conditioner indoor units 17a and 17b may be installed inside the wall of the operating room 15. There is no limit to the number of one-coil heat pump air conditioner indoor units, and three or more one-coil heat pump air conditioner indoor units surround the operating table of the operating room 15 depending on the volume of the air conditioning space of the operating room 15. It may be installed at the corner or edge of the room or inside the wall.

  The 1-coil first heat pump air conditioner indoor unit 17a and the 1-coil second heat pump air conditioner indoor unit 17b are provided in a housing 40 (casing), a cooling coil 41 housed in the housing 40, and a housing 40. The blower fan 42 is housed in the housing 40 and the drain pan 43 is housed in the housing 40. The control unit 44 of the 1-coil type first and second heat pump air conditioner indoor units 17a and 17b is connected to the controller 21 by a signal line (not shown).

  The housings 17a and 17b of the 1-coil type first and second heat pump air conditioner indoor units are hexahedrons having front and rear walls, top and bottom walls, and both side walls. An air intake port 45 is formed in the lower portion of the front wall of the housing 40, and an air outlet 46 is formed in the top wall of the housing 40. The second air supply duct 25 connected to the air supply unit 20 is connected to the air outlet 46 of the housing 42.

  A cooling coil heating medium pipe 47 extending from the branch unit 29 is connected to the cooling coils 41 of the first-coil first and second heat pump air conditioner indoor units 17a and 17b. A cooling coil control valve (not shown) for adjusting the flow of the heating medium fluid into the cooling coil 41 is installed in the cooling coil heating medium pipe 47 extending in the vicinity of the cooling coil 41.

  The blower fan 42 is installed immediately below the top wall of the housing 40, and causes the conditioned air created by the one-coil first and second heat pump air conditioner indoor units 17a and 17b to flow into the second air supply duct 25. The drain pan 43 is installed immediately below the cooling coil 41, collects water droplets dropped from the cooling coil 41, and drains the water droplets to the outside. The 1-coil first heat pump air conditioner indoor unit 17a and the 1-coil second heat pump air conditioner indoor unit 17b perform cooling operation using the exchange heat of the cooling coil 41.

  The simultaneous heating / cooling type heat pump air conditioner outdoor unit 18 includes a two-coil type first and second heat pump air conditioner indoor units 16a and 16b and a one coil type first and second heat pump air conditioner indoor units 17a and 17b. , 38, 39, 47 to send the heat transfer fluid, and the two-coil type first and second heat pump air conditioner indoor units 16a, 16b and the one-coil type first and second heat pump air conditioner indoor units 17a, 17b. The heat transfer fluid used for the heat exchange of circulates. The control unit (not shown) of the cooling / heating simultaneous operation type heat pump air conditioner outdoor unit 18 is connected to the controller 21 by a signal line.

  The dew point temperature sensor 12 is installed near the indoor air intake 36 inside the two-coil first heat pump air conditioner indoor unit 16a. The dew point temperature sensor 12 is connected to the controller 21 by a signal line (not shown). The dew point temperature sensor 12 measures the dew point temperature in the vicinity of the indoor air intake 36 inside the two-coil first heat pump air conditioner indoor unit 16a, and sends the measured dew point temperature to the controller 21.

  The first dry-bulb temperature sensor 13 is installed near the indoor air intake 36 inside the two-coil first heat pump air conditioner indoor unit 16a. The first dry-bulb temperature sensor 13 is connected to the controller 21 by a signal (not shown) line. The first dry-bulb temperature sensor 13 measures the dry-bulb temperature in the vicinity of the indoor air intake 36 inside the two-coil first heat pump air conditioner indoor unit 16a and sends the measured measured dry-bulb temperature to the controller 21. .

  The second dry-bulb temperature sensor 14 is installed in the vicinity of the indoor air intake 36 inside the two-coil first heat pump air conditioner indoor unit 16a. The second dry-bulb temperature sensor 14 is connected to the controller 21 by a signal line (not shown). The second dry-bulb temperature sensor 14 measures the dry-bulb temperature in the vicinity of the indoor air intake 36 inside the two-coil first heat pump air conditioner indoor unit 16a, and sends the measured measured dry-bulb temperature to the controller 21. .

  FIG. 5 is a diagram showing an example of control in the indoor air conditioning system 10, and FIG. 6 is a flowchart illustrating an example of operation performed by the indoor air conditioning system 10 when the temperature is high in a high-humidity environment, summer, winter, and intermediate periods. Is. FIG. 7 is a flowchart continuing from FIG.

  First, the temperature inside the operating room 15 is set. To set the temperature, tap the temperature setting button displayed on the operation panel 22. When the temperature setting button is tapped, a set temperature input area and a setting confirmation button are displayed on the operation panel 22. The set temperature is input in the set temperature input area (S-10). After inputting the set temperature, tap the setting confirmation button.

  When the setting confirmation button on the operation panel 22 is tapped, the controller 21 determines the input set temperature as the set dry-bulb temperature and stores the determined set dry-bulb temperature in the storage area in a state associated with the input date and time of the set temperature. (Remember. The controller 21 applies the input set temperature to the correlation stored in the storage area, calculates the dew point temperature corresponding to the input (selected) set temperature, and determines the calculated dew point temperature as the set dew point temperature (setting. Dew point temperature determining means) (S-11). The controller 21 stores (stores) the determined set dew point temperature in the storage area in a state associated with the input date and time of the set temperature and the set humidity.

  For example, when 24 ° C. is input as the set temperature, the controller 21 applies the temperature of 24 ° C. and the humidity of 50% to the correlation and determines the set dew point temperature to be 12 ° C. The controller 21 stores (memorizes) the determined set dew point temperature of 12 ° C. in the storage area in a state associated with the input date and time of the set temperature and the set humidity. By tapping the temperature setting button on the operation panel 22, the set temperature can be input again.

  When the air conditioner ON button of the operation panel 22 is tapped, a start signal is transmitted from the controller 21 to the control unit of the simultaneous heating / cooling type heat pump air conditioner outdoor unit 18, and the start signal is transmitted from the controller 21 to the two-coil type first and second heat pump air conditioners. While being transmitted to the control units of the indoor units 16a and 16b, the activation signal is transmitted from the controller 21 to the control units of the one-coil first and second heat pump air conditioner indoor units 17a and 17b. The first air conditioning unit is implemented when the indoor air conditioning system 10 is activated in the high humidity environment of the intermediate period and in the summer.

  The control unit of the cooling / heating simultaneous operation type heat pump air conditioner outdoor unit 18 which has received the activation signal from the controller 21 activates the cooling / heating simultaneous operation type heat pump air conditioner outdoor unit 18, and causes the heat medium fluid having undergone heat exchange to flow into the branch unit 29. The heat medium fluid is supplied to the two-coil first and second heat pump air conditioner indoor units 16a and 16b and the one-coil first and second heat pump air conditioner indoor units 17a and 17b through the branching unit 29.

  The control unit of the two-coil type first and second heat pump air conditioner indoor units 16a, 16b, which has received the activation signal from the controller 21, activates the blower fan 33 to open the opening / closing mechanism of the cooling coil control valve, and heats it. Open the opening / closing mechanism of the coil control valve. The control unit of the first and second one-coil heat pump air conditioner indoor units 17a and 17b that receives the activation signal from the controller 21 activates the blower fan 42 and opens the opening / closing mechanism of the cooling coil control valve.

  The heat medium fluid supplied from the cooling / heating simultaneous operation type heat pump air conditioner outdoor unit 18 flows into the branch unit 29 through the forward heat medium pipe 28, and flows from the branch unit 29 into the forward cooling coil heat medium pipe 38. Through the two-coil type first and second heat pump air conditioner indoor units 16a, 16b, into the cooling coil 31 of the indoor unit 16a, 16b, and from the branch unit 29 through the heat coil pipe 39 for the outgoing heating coil. While flowing into the heating coil 32 of the second heat pump air conditioner indoor unit 16a, 16b, and passing from the branch unit 29 through the heat medium pipe 47 for the outgoing cooling coil, the first and second heat pump air conditioner indoor unit 17a of the one coil type, It flows into the cooling coil 41 of 17b.

  In the two-coil type first and second heat pump air conditioner indoor units 16a, 16b, the heat medium fluid flows through the cooling coil 31 and the heating coil 32, and heat exchange is performed in the heating / cooling coil 31 and the heating coil 32. The dehumidifying operation is performed (first air conditioning means) (S-12). In the dehumidifying operation, the air in the operating room 15 is supplied from the air intake port 45 of the two-coil first and second heat pump air conditioner indoor units 16a, 16b to the two-coil first and second heat pump air conditioner indoor units 16a, 16b. The cooling dehumidified air that has flowed into the inside of the chamber and has been dehumidified by using the exchange heat of the cooling coil 31 is reheated by using the exchange heat of the heating coil 32 to produce dehumidified conditioned air at a predetermined temperature.

  The dehumidified conditioned air flows into the first air supply duct 24 from the air outlets 37 of the two-coil first and second heat pump air conditioner indoor units 16a and 16b by the blower fan 33. Dehumidified conditioned air created by the cooling coil 31 and the heating coil 32 of the two-coil first and second heat pump air conditioner indoor units 16a, 16b flows into the air supply unit 20 from the first air supply duct 24, Air is supplied into the operating room 15 from the air outlet of the air supply unit 20 while flowing through the HEPA filter 26.

  The heat medium fluid that has undergone heat exchange in the cooling coil 31 and the heating coil 32 of the two-coil type first and second heat pump air conditioner indoor units 16a and 16b is returned to the cooling coil heat medium pipe 38 and to the return coil. It flows into the branch unit 29 through the heating coil heat medium pipe 39, and returns from the branch unit 29 to the simultaneous cooling / heating simultaneous operation type heat pump air conditioner outdoor unit 18 through the returning heat medium pipe 28.

  In the 1-coil type first and second heat pump air conditioner indoor units 17a, 17b, the heat medium fluid flows through the cooling coil 41, and heat is exchanged in the cooling coil 41, whereby the cooling operation is performed (the first operation). Air conditioning means) (S-12). In the cooling operation, the air in the operating room 15 is supplied from the air intake ports 45 of the first and second heat pump air conditioner indoor units 17a and 17b of the one coil type to the first and second heat pump air conditioner indoor units 17a and 17b of the one coil type. The conditioned air that has flowed into the interior of and is cooled using the exchange heat of the cooling coil 41.

The cooled conditioned air flows into the second air supply duct 25 from the air outlets 46 of the one-coil type first and second heat pump air conditioner indoor units 17a and 17b by the blower fan 42. The cooled conditioned air produced by the cooling coils 41 of the first and second heat pump air conditioner indoor units 17a, 17b of the one-coil type flows into the air supply unit 20 from the second air supply duct 25 and passes through the HEPA filter 26. Air is supplied into the operation room 15 through the air outlet of the air supply unit 20 while flowing.
The heat medium fluid having undergone heat exchange in the cooling coils 17a and 17b of the first and second heat pump air conditioner indoor units of the one-coil type flows into the branch unit 29 through the return cooling coil heat medium pipe 47. From the branch unit 29, the heat is returned to the cooling / heating simultaneous operation type heat pump air conditioner outdoor unit 18 through the return heat medium pipe 28.

  During the dehumidifying operation of the two-coil type first and second heat pump air conditioner indoor units 16a, 16b, the dew point temperature sensor 12 is located in the vicinity of the indoor air intake port 36 inside the two-coil first heat pump air conditioner indoor unit 16a. The dew point temperature is measured and the measured dew point temperature is transmitted to the controller 21. During the dehumidifying operation in the two-coil type first and second heat pump air conditioner indoor units 16a and 16b, the first dry-bulb temperature sensor 13 detects the indoor air intake port inside the two-coil first heat pump air conditioner indoor unit 16a. The dry-bulb temperature near 36 is measured, and the measured dry-bulb temperature is transmitted to the controller 21. Further, during the cooling operation of the first coil type first heat pump air conditioner indoor units 17a and 17b, the second dry-bulb temperature sensor 14 controls the indoor air intake port 36 inside the two coil type first heat pump air conditioner indoor unit 16a. The dry-bulb temperature in the vicinity of is measured, and the measured dry-bulb temperature is transmitted to the controller 21.

  During the execution of the first air conditioning means, the controller 21 compares the measured dew point temperature transmitted from the dew point temperature sensor 12 with the set dew point temperature determined by the set dew point temperature determining means, and determines whether the measured dew point temperature is higher than the set dew point temperature. Is determined (S-13). When the measured dew point temperature is higher than the set dew point temperature, the controller 21 continues to implement the first air conditioning means. Therefore, the dehumidifying operation is continuously performed in the two-coil first and second heat pump air conditioner indoor units 16a and 16b, and the cooling operation is continuously performed in the one-coil first and second heat pump air conditioner indoor units 17a and 17b. (S-14).

  In the first air conditioner, when the measured dew point temperature is higher than the set dew point temperature, proportional control is performed in the cooling coils 31 of the two-coil first and second heat pump air conditioner indoor units 16a, 16b according to the measured dew point temperature. In the proportional control in the cooling coil 31 of the two-coil type first and second heat pump air conditioner indoor units 16a, 16b of the first air conditioning unit, the two-coil type first and second coil type air conditioners according to the measured dew point temperature measured by the dew point temperature sensor. The cooling function of the cooling coil 31 of the second heat pump air conditioner indoor units 16a, 16b is adjusted between 0 and 100%.

  Further, in the first air conditioning means, proportional control is performed in the heating coils 32 of the two-coil first and second heat pump air conditioner indoor units 16a, 16b according to the measured dry bulb temperature. In the proportional control of the heating coil 32 of the first and second heat pump air conditioner indoor units 16a, 16b of the two coil type of the first air conditioning means, the two coil type is used according to the measured dry bulb temperature measured by the first dry bulb temperature sensor 13. The heating function of the heating coil 32 of the first and second heat pump air conditioner indoor units 16a, 16b is adjusted between 0 and 100%.

  Further, in the first air conditioning means, proportional control is performed in the cooling coils 41 of the one-coil first and second heat pump air conditioner indoor units 17a, 17b according to the measured dry bulb temperature. In the proportional control in the cooling coil 41 of the first and second heat pump air conditioner indoor units 17a and 17b of the first air conditioning means, the one coil type is used according to the measured dry bulb temperature measured by the second dry bulb temperature sensor 14. The cooling function of the cooling coil 41 of the first and second heat pump air conditioner indoor units 17a and 17b is adjusted between 0 and 100%.

  In step 13 (S-13), when the measured dew point temperature is lower than the set dew point temperature as a result of comparing the measured dew point temperature with the set dew point temperature, the indoor air conditioning system 10 implements the second air conditioning means. When the measured dew point temperature is lower than the set dew point temperature, the controller 21 connects the cooling coil heat medium pipe 38 for the forward connection to the cooling coil 31 to the control unit of the two-coil first and second heat pump air conditioner indoor units 16a and 16b. And the closing signal of the forward heating coil heating medium pipe 39 connected to the heating coil 32.

  The control units of the two-coil type first and second heat pump air conditioner indoor units 16a and 16b that have received the closing signals of the forward cooling coil heat medium pipe 38 and the forward heating coil heat medium pipe 39 from the controller 21 , Closing the opening / closing mechanism of the cooling coil control valve, stopping the inflow of the refrigerant fluid from the forward cooling coil heat medium pipe 38 to the cooling coil 31, and closing the opening / closing mechanism of the heating coil control valve, The inflow of the refrigerant fluid from the heating coil heat transfer medium pipe 39 for going to the heating coil 32 is stopped.

  In the two-coil type first and second heat pump air conditioner indoor units 16a, 16b, a blowing operation that does not use exchange heat of the cooling coil 31 and the heating coil 32 is performed (second air conditioning unit), and one-coil type first and second In the second heat pump air conditioner indoor units 17a and 17b, the cooling operation is continuously performed (second air conditioning means) (S-15).

  In the blowing operation, the air in the operating room 15 is supplied from the air intake 36 of the first and second heat pump air conditioner indoor units 16a and 16b of the two coil type to the first and second heat pump air conditioner indoor units 16a and 16b of the two coil type. The air flows into the operation room 15 by the blower fan 33 from the air outlet of the air supply unit 20.

  In the cooling operation of the one-coil first and second heat pump air conditioner indoor units 17a and 17b in the second air conditioner, the air in the operating room 15 has one coil type first and second heat pump air conditioner indoor units 17a. , 17b from the air intake ports 45 of the first and second heat pump air conditioner indoor units 17a, 17b and cooled by the exchange heat of the cooling coil 41 by the blower fan 42. Air is supplied into the operation room 15 from the air outlet of the air supply unit 20.

  In the second air conditioning means, proportional control is performed in the cooling coils 41 of the one-coil first and second heat pump air conditioner indoor units 17a, 17b according to the measured dry bulb temperature. In the proportional control of the cooling coil 41 of the first and second heat pump air conditioner indoor units 17a and 17b of the second air conditioning means, the one coil type is used according to the measured dry bulb temperature measured by the second dry bulb temperature sensor 14. The cooling function of the cooling coil 41 of the first and second heat pump air conditioner indoor units 17a and 17b is adjusted between 0 and 100%.

  During execution of the second air conditioning means, the controller 21 compares the measured dry-bulb temperature transmitted from the first dry-bulb temperature sensor 13 with the set dry-bulb temperature to determine whether the measured dry-bulb temperature is lower than the set dry-bulb temperature. Judge (S-16). When the measured dry-bulb temperature is higher than the set dry-bulb temperature, the controller 21 continuously executes the second air conditioning means. Therefore, the blowing operation is continuously performed in the two-coil first and second heat pump air conditioner indoor units 16a and 16b, and the cooling operation is continuously performed in the one-coil first and second heat pump air conditioner indoor units 17a and 17b. (S-17).

  In step 16 (S-16), if the measured dry-bulb temperature is lower than the set dry-bulb temperature as a result of comparing the measured dry-bulb temperature with the set dry-bulb temperature, the third air-conditioning unit is implemented in the indoor air conditioning system 10. It When the measured dry-bulb temperature is lower than the set dry-bulb temperature, the controller 21 connects the cooling coil 31 to the control unit of the two-coil first and second heat pump air conditioner indoor units 16a and 16b, and the heat medium for the forward cooling coil. A close signal for the pipe 38 is transmitted, and an open signal for the forward heating coil heating medium pipe 39 connected to the heating coil 32 is transmitted.

  The two-coil type first and second heat pump air conditioner indoor units 16a, 16b which have received from the controller 21 the closing signal of the heat coil pipe 38 for the forward cooling coil and the open signal of the heat medium pipe 39 for the forward heating coil. The control unit closes the opening / closing mechanism of the cooling coil control valve, stops the inflow of the refrigerant fluid from the outgoing cooling coil heating medium pipe 38 to the cooling coil 31, and opens the heating coil control valve opening / closing mechanism. The refrigerant fluid is opened and the refrigerant fluid is caused to flow into the heating coil 32 from the heat coil pipe 39 for the forward heating coil.

  In the two-coil type first and second heat pump air conditioner indoor units 16a, 16b, heating operation is performed using the heat exchange of the heating coil 32 and not the heat exchange of the cooling coil 31 (third air conditioner), 1 In the coil type first and second heat pump air conditioner indoor units 17a, 17b, the cooling operation is continuously performed (third air conditioning means) (S-18).

  In the heating operation, the air in the operation room 15 is supplied from the air intake 36 of the first and second heat pump air conditioner indoor units 16a and 16b of the two coil type to the first and second heat pump air conditioner indoor units 16a and 16b of the two coil type. The conditioned air that has flowed into the inside of the operating room and has been heated using the exchange heat of the heating coil 32 is supplied to the operating room 15 from the air outlet of the air supply unit 20 by the blower fan 33.

  In the cooling operation of the one-coil type first and second heat pump air conditioner indoor units 17a and 17b in the third air conditioning means, the air in the operating room 15 has one coil type first and second heat pump air conditioner indoor units 17a. , 17b from the air intake ports 45 of the first and second heat pump air conditioner indoor units 17a, 17b and cooled by the exchange heat of the cooling coil 41 by the blower fan 42. Air is supplied into the operation room 15 from the air outlet of the air supply unit 20.

  In the third air conditioning means, proportional control is performed in the heating coils 32 of the two-coil first and second heat pump air conditioner indoor units 16a, 16b according to the measured dry bulb temperature. In the proportional control of the heating coil 32 of the two-coil type first and second heat pump air conditioner indoor units 16a and 16b of the third air conditioning unit, the two-coil type is used according to the measured dry-bulb temperature measured by the first dry-bulb temperature sensor 13. The heating function of the heating coil 32 of the first and second heat pump air conditioner indoor units 16a, 16b is adjusted between 0 and 100%.

  In the third air conditioning means, proportional control is performed in the cooling coils 41 of the first and second heat pump air conditioner indoor units 17a and 17b of the one-coil type in accordance with the measured dry-bulb temperature. In the proportional control in the cooling coil 41 of the first and second heat pump air conditioner indoor units 17a and 17b of the first coil type of the third air conditioning means, the one coil type is used according to the measured dry bulb temperature measured by the second dry bulb temperature sensor 14. The cooling function of the cooling coil 41 of the first and second heat pump air conditioner indoor units 17a and 17b is adjusted between 0 and 100%.

  The controller 21 determines whether to suspend or stop the operation of the indoor air conditioning system 10 during execution of the first air conditioning means, the second air conditioning means, or the third air conditioning means (S-19). When the air conditioner OFF button of the operation panel 22 is tapped while the first air conditioner, the second air conditioner, or the third air conditioner is being executed, the controller 21 causes the controller of the cooling / heating simultaneous operation type heat pump air conditioner outdoor unit 18 to send a stop signal. To send a stop signal to the control units of the two-coil first and second heat pump air conditioner indoor units 16a and 16b, and also to the one-coil first and second heat pump air conditioner indoor units 17a and 17b. Send a stop signal to.

  The control unit of the cooling / heating simultaneous operation type heat pump air conditioner outdoor unit 18 which receives the stop signal from the controller 21 stops the cooling / heating simultaneous operation type heat pump air conditioner outdoor unit 18.

  Unless the air conditioner OFF button on the operation panel 22 is tapped while the first air conditioner, the second air conditioner, or the third air conditioner is being implemented, the controller 21 determines in step 19 (S-19) that the first air conditioner or the second air conditioner. It is determined that the means or the third air conditioning means will be continuously implemented. The controller 21 returns to step 13 (S-13) and compares the measured dew point temperature transmitted from the dew point temperature sensor 12 with the set dew point temperature determined by the set dew point temperature determining means, and the measured dew point temperature is lower than the set dew point temperature. It is determined whether it is high, and the procedure from step 13 (S-13) is repeated.

  In the indoor air conditioning system 10, the two-coil first and second heat pump air conditioner indoor units 16a and 16b (two-coil first to nth heat pump air conditioner indoor units) cool and dehumidify using the exchange heat of the cooling coil 31. Without using the exchange heat of the cooling coil 31, the dehumidification operation of reheating the cooled dehumidified air using the exchange heat of the heating coil 32, the blowing operation without using the exchange heat of the cooling coil 31 and the heating coil 32, and the exchange heat of the cooling coil 31. Either one of the heating operation using the exchange heat of the heating coil 32 is performed, and the 1-coil first and second heat pump air conditioner indoor units 17a and 17b (1-coil first to nth heat pump air conditioner indoor units) are When the cooling operation using the exchange heat of the cooling coil 41 is performed and the measured dew point temperature is higher than the set dew point temperature, the two-coil type first and second heat pump air The indoor unit 16a, 16b performs the dehumidifying operation, and the first and second one-coil heat pump air conditioner indoor units 17a, 17b perform the first air-conditioning unit for the cooling operation, and the measured dew point temperature is higher than the set dew point temperature. When it is low, the second air-conditioning means in which the first and second heat pump air conditioner indoor units 16a and 16b of the two-coil type perform the blowing operation and the first and second heat pump air conditioner indoor units 17a and 17b of the one-coil type perform the cooling operation. And the measured dew-point temperature is lower than the set dew-point temperature and the measured dry-bulb temperature is lower than the set dry-bulb temperature, the two-coil heat pump air conditioner indoor units 16a and 16b perform heating operation and the one-coil heat pump. Since the air conditioner indoor units 17a, 17b implement the third air conditioning means for performing the cooling operation, the dew point temperature in the operating room 15 The operation modes of the two-coil first and second heat pump air conditioner indoor units 16a, 16b 16a, 16b can be switched according to the ball temperature, and the one-coil first and second heat pump air conditioner indoor units 17a, 17b are cooled. By operating and performing any of the dehumidifying operation, the air blowing operation, and the heating operation in the first to second heat pump air conditioner indoor units 16a and 16b of the two-coil type, the room in the operating room 15 is maintained by continuing the dehumidifying operation. The humidity of the room does not drop more than necessary, the indoor humidity does not deviate from the appropriate humidity and the room temperature does not deviate from the appropriate temperature, and a good temperature and humidity environment with a well-balanced temperature and humidity. The temperature and humidity environment inside the operating room 15 can be optimally maintained.

  The indoor air conditioning system 10 performs the heating operation in which the first to second heat pump air conditioner indoor units 16a and 16b of the two-coil type raise the temperature of the room of the operating room 15, so that the room temperature is low when the room temperature is low. Can be raised and the indoor temperature environment can be optimally maintained. The indoor air conditioning system 10 may not require the dehumidifying operation depending on the indoor dew point temperature measured by the dew point temperature sensor 12, but in this case, the two-coil first heat pump air conditioner indoor units 16a, 16b are cooled. By performing either a blowing operation that does not use the exchange heat of the coil 31 and the heating coil 32 or a heating operation that uses the exchange heat of the heating coil 32 without using the exchange heat of the cooling coil 31, Since the use of the exchanged heat in the heating coil 32 is stopped, useless heat energy is not consumed in the cooling coil 31 and the heating coil 32, and the energy saving of the system 10 can be achieved.

10 Indoor Air Conditioning System 11 Heat Pump Air Conditioner 12 Dew Point Temperature Sensor 13 First Dry-bulb Temperature Sensor 14 Second Dry-bulb Temperature Sensor 15 Operating Room 16a Two-Coil First Heat Pump Air-Conditioner Indoor Unit 16b Two-Coil Second Heat-Pumper Air Conditioner Indoor Machine 17a 1-coil type first heat pump air conditioner indoor unit 17b 1-coil type second heat pump air conditioner indoor unit 18 Cooling and heating simultaneous operation type heat pump air conditioner outdoor unit 19 Ceiling 20 Air supply unit 21 Controller 22 Operation panel 23 Outside air duct 24 First supply Air duct 25 Second air supply duct 26 HEPA filter 27 Floor 28 Heat medium piping 29 Branch unit 30 Enclosure 31 Cooling coil 32 Heating coil 33 Blower fan 34 Drain pan 35 Controller 36 Indoor air intake 37 Air blowout 3 Heat medium pipe 40 casing 41 cooling coils 42 blower fan 43 drain pan 44 controller 45 indoor air inlet 46 air outlet 47 heat medium pipe for cooling coils for heat medium pipe 39 heating coil for cooling the coil

Claims (8)

A two-coil heat pump air conditioner indoor unit having a heating coil and a cooling coil, a one-coil heat pump air conditioner indoor unit having a cooling coil, the two-coil heat pump air conditioner indoor unit and the one-coil heat pump air conditioner indoor unit A heat pump air conditioner configured by a heat pump air conditioner outdoor unit that simultaneously heats and cools a heat medium fluid by a heat medium pipe is used, and the two coil heat pump air conditioner indoor unit and the one coil heat pump air conditioner indoor unit are used. Installed in the same room, in the indoor air conditioning system for adjusting the temperature and humidity of the room by operating the heat pump air conditioner,
The two-coil type heat pump air conditioner indoor unit performs dehumidification operation in which reheated cooling dehumidified air that has been cooled and dehumidified using exchange heat of the cooling coil is reheated using exchange heat of the heating coil; The one-coil heat pump air conditioner indoor unit is operated by performing either a blowing operation that does not use the exchange heat of the cooling coil or a heating operation that uses the exchange heat of the heating coil without using the exchange heat of the cooling coil. However, performing a cooling operation using the exchange heat of the cooling coil,
In the indoor air conditioning system, the one-coil heat pump air conditioner indoor unit continues the cooling operation, and the dehumidifying operation of the two-coil heat pump air conditioner indoor unit is performed in accordance with the indoor set temperature condition and set humidity condition. And the air-blowing operation and the heating operation are switched.   The indoor air conditioning system includes a dew point temperature sensor for measuring the dew point temperature of the room, the measured dew point temperature of the room is compared with a preset dew point temperature, the measured dew point temperature Is higher than the set dew point temperature, the two-coil heat pump air conditioner indoor unit performs the dehumidifying operation, and the one-coil heat pump air conditioner indoor unit performs the cooling operation, and the first air conditioning means is implemented. When the measured dew point temperature is lower than the set dew point temperature, the second coil type heat pump air conditioner indoor unit performs the air blowing operation and the one coil type heat pump air conditioner indoor unit performs the cooling operation. However, when the measured dew point temperature is lower than the set dew point temperature and the temperature is low, the two-coil heat Indoor air conditioning system of claim 1, wherein the one coil type heat pump air conditioner indoor unit is performing the third air conditioning means for performing the cooling operation with pump air conditioner indoor unit performs the heating operation.   A plurality of two-coil first to n-th heat pump air conditioner indoor units and a plurality of one-coil first to n-th heat pump air conditioner indoor units are installed in the room, and the first air-conditioning unit includes: While the two-coil type first to n-th heat pump air conditioner indoor units perform the dehumidifying operation, the one-coil type first to n-th heat pump air conditioner indoor units perform the cooling operation, and in the second air conditioning means, While the two-coil type first to nth heat pump air conditioner indoor units perform the air blowing operation, the one coil type first to nth heat pump air conditioner indoor units perform the cooling operation, and in the third air conditioning means, The first to nth heat pump air conditioner indoor units of the two coil type perform the heating operation, and the first to nth heat pump air conditioner indoor units of the one coil type perform the cooling operation. Indoor air conditioning system according to claim 2 for.   The dew point temperature sensor is installed in the vicinity of the indoor air intake port inside the two-coil type heat pump air conditioner indoor unit among the two-coil type first to nth heat pump air conditioner indoor units, and the two coil type Near the indoor air intake port inside the two-coil heat pump air conditioner indoor unit measured by the dew point temperature sensor by the indoor air conditioning system by measuring the dew point temperature near the indoor air intake port inside the heat pump air conditioner indoor unit. The indoor air-conditioning system according to claim 3, wherein the measured dew-point temperature is compared with a preset set dew-point temperature, and any one of the first air-conditioning means to the third air-conditioning means is implemented.   The indoor air conditioning system is installed near an indoor air intake port inside a two-coil heat pump air conditioner indoor unit of any of the two-coil first to n-th heat pump air conditioner indoor units to control a dry-bulb temperature. A first dry-bulb temperature sensor for measurement, a measured dry-bulb temperature near the indoor air intake port inside the indoor unit of the two-coil heat pump air conditioner measured by the first dry-bulb temperature sensor, and a preset dry temperature When the measured dew-point temperature is lower than the set dew-point temperature and the measured dry-bulb temperature is higher than the set dry-bulb temperature, the two-coil type first to nth heat pump air conditioner indoor units are compared with a bulb temperature. Perform the blowing operation, the 1-coil type first to nth heat pump air conditioner indoor units perform the cooling operation, and the measured dew point temperature When the measured dry-bulb temperature is lower than the dew point temperature and the measured dry-bulb temperature is lower than the set dry-bulb temperature, the two-coil type first to nth heat pump air conditioner indoor units perform the heating operation and the one-coil type first. The indoor air conditioning system according to any one of claims 3 to 4, wherein the first to nth heat pump air conditioner indoor units perform a cooling operation.   The room is a room of an operating room, and the two-coil type first to nth heat pump air conditioner indoor units and the one coil type first to nth heat pump air conditioner indoor units form an operating table of the operating room. The indoor air conditioning system according to any one of claims 3 to 5, which is installed in a room of the operating room so as to surround it.   In the indoor air conditioning system, the two-coil first to n-th heat pump air conditioner indoor units and the one-coil first to n-th heat pump air conditioner indoor units are floor-standing type, and the same number of the two-coil type The first to n-th heat pump air conditioner indoor units and the 1-coil first to n-th heat pump air conditioner indoor units are installed in a corner or edge or wall of the operating room, and the 2-coil first to The indoor air conditioning system according to claim 6, wherein conditioned air produced by the nth heat pump air conditioner indoor unit and the 1-coil first to nth heat pump air conditioner indoor units is supplied from the ceiling of the operating room.   The indoor air conditioning system is installed in the vicinity of an indoor air intake port inside a two-coil heat pump air conditioner indoor unit of any of the two-coil first to nth heat pump air conditioner indoor units, Including a second dry-bulb temperature sensor for measuring a dry-bulb temperature used for proportional control of the first to n-th heat pump air conditioner indoor units, the dew point temperature sensor, the first dry-bulb temperature sensor, and the second dry-bulb temperature. The indoor air conditioning system according to any one of claims 5 to 7, wherein the sensor is installed in the vicinity of an indoor air intake port inside the same two-coil heat pump air conditioner indoor unit.

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