JP2011188785A - Heat pump type air conditioning machine for protected horticulture greenhouse - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat pump type air conditioning machine for a protected horticulture greenhouse, causing less disease damage of crops/plants, and raising high-quality crops/plants. <P>SOLUTION: The heat pump type air conditioning machine for a protected horticulture greenhouse, allowing reheat dehumidification operation, includes a control device inputting information from each sensor, outputting a control signal to each equipment, and including a time function, a humidifying unit, and a selection means selecting cold (cooling) operation, reheat dehumidification operation, heating operation and humidification operation. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a heat pump air conditioner with a cooling / heating function and a dehumidifying / humidifying function for a facility horticultural house used in a facility horticultural house (hereinafter referred to as a house) such as a vinyl house or a greenhouse (for example, a glass house). It is suitable for internal air conditioning.

  As a heat pump type air conditioner used for air conditioning in a house, there are those described in Patent Document 1 and Patent Document 2.

  In the thing of patent document 1, cooling and dehumidification in a house are described using a heat pump type air conditioner.

  Moreover, in the thing of patent document 2, performing cooling, dehumidification, and heating in a house using a heat pump type air conditioner is described.

  Electric heat pump packages for horticultural horticulture have been growing rapidly due to the trend of reducing greenhouse gas emissions and measures against global warming in the agricultural sector of the country.

  The main uses of the electric heat pump package for facility horticulture at the present time are firstly an auxiliary heater for the purpose of reducing A heavy oil, and secondly a night-time air conditioner for the purpose of improving the quality of crops.

  In the air conditioning method mentioned above, growers and public organizations (agricultural experiment stations, etc.) pointed out that the dehumidification effect has a positive effect on the crops, and since the demonstration tests are being carried out in various places, dehumidification in the field of horticulture in the future Although it is certain that needs will increase rapidly, there is no air conditioner that has the three modes of cooling, reheat dehumidification, and heating, or four modes with humidification added thereto.

JP-A-5-308859 Japanese Patent Laid-Open No. 58-175664

  The current electric heat pump package for horticultural horticulture has a dehumidifying effect by cooling operation, but cannot perform a reheat dehumidifying function while maintaining the temperature in the greenhouse.

  On the other hand, the current electric dehumidifiers have “reheat-only type” and “cooling function type”, and the latter “cooling function type” has a cooling function to maintain the specified temperature and humidity. By alternately repeating dehumidification, the temperature in the greenhouse can be maintained.

  However, the dehumidifying function is required in the house in most cases when using a heating system such as a hot air heater or hot water heater to maintain the house at room temperature. The above-mentioned dehumidifiers that do not have the function cannot replace the combustion system warmer, and there is no dehumidifier to which a heating (heating) function is added.

  An object of the present invention is to obtain a heat pump type air conditioner for a facility horticultural house that has few diseases of crops and plants and can grow high-quality crops and plants.

In order to solve the above problems, the present invention provides:
In a heat pump air conditioner for a facility horticulture house capable of reheat dehumidification operation,
A control device that receives information from each sensor and outputs a control signal to each device, the control device having a time function,
A humidifying unit;
A selection means for selecting cooling (cooling) operation, reheat dehumidification operation, heating operation, humidification operation,
It is provided with.

  ADVANTAGE OF THE INVENTION According to this invention, there is little disease of a crop and a plant, and the heat pump type air conditioner for facility horticultural houses which can grow a high quality crop and plant is realizable.

The figure which shows the specific structure of the indoor unit of an Example, and an outdoor unit. The refrigeration cycle block diagram of a present Example. The figure which shows the operation mode of a present Example. The figure (0) which shows the temperature and humidity inside and outside a house. The figure (1) which shows the temperature and humidity inside and outside a house. The figure (2) which shows the temperature and humidity inside and outside a house. The figure (3) which shows the temperature and humidity inside and outside a house. The figure (1) which installed the air conditioner of the present Example in the house. The figure (2) which installed the air conditioner of the present Example in the house. The figure (3) which installed the air conditioner of the present Example in the house. The figure (4) which installed the air conditioner of a present Example in the house. The figure explaining the quality of a rose.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a front view, a side view, and a top view in which the air conditioner of this embodiment is partially broken so that the internal structure can be understood.

  Reference numeral 1 denotes a casing of an indoor unit of an air conditioner. In the casing 1, a refrigeration cycle is performed by switching between an indoor blower 7 that circulates the air in the house 20 and operating modes such as air conditioning and reheat dehumidification. The components that make up are installed. They are mainly the compressor 3, the indoor heat exchanger A (4) that becomes a heat exchanger for evaporation, the indoor heat exchanger B (5) that becomes a heat exchanger for reheating, an expansion valve 9, and a four-way valve 10. . Further, a drain pan 11, a temperature / humidity sensor 12, and a humidification unit 13 are provided. The drain pan 11 below the evaporation heat exchanger 4 is also provided with a drain drain hole for discharging the condensed water condensed in the evaporation heat exchanger 4 to the outside (outside). In addition, a temperature / humidity sensor 12 and an electrical component box for ON / OFF control of the compressor are provided.

  Reference numeral 2 denotes a casing of an outdoor unit of the air conditioner. In the casing 2, an outdoor blower 8 and parts constituting a refrigeration cycle are installed. They are provided with an outdoor heat exchanger 6 and an outdoor expansion valve 14 that condense refrigerant during cooling operation and evaporate refrigerant during heating operation.

  The indoor unit 1 and the outdoor unit 2 are connected by a refrigerant pipe 19 connecting them. Each heat exchanger and the air in the house 20 are sucked and led to the indoor heat exchangers A, B, etc., and cooled / heated (heat exchange) or reheat dehumidified (heat exchange). In addition, the inside of the house 20 is humidified by the humidifying unit 13.

  For controlling these devices, basically, the control unit CU30 detects the air condition (temperature and humidity) in the house 20 with the temperature / humidity sensor 12 provided at the air suction port of the indoor unit 1, and the compressor This is done by switching between ON / OFF and operation mode.

  In FIG. 2, the refrigeration cycle block diagram of a present Example is shown. The detail of each operation mode is demonstrated using this figure. This air conditioner has four operation modes.

AA cooling (cooling) operation function The high-temperature and high-pressure refrigerant gas discharged from the compressor 3 in the indoor unit 1 is radiated and condensed in the condensation / evaporation combined heat exchanger 6 in the outdoor unit 2 through the refrigerant pipe 19. Returning to the indoor unit 1, the refrigerant liquid is expanded by the expansion valve 9, and sent to the heat exchanger 4 for evaporation. At this time, the air in the house 20 sucked in from the indoor blower 7 is absorbed and evaporated by the evaporating heat exchanger 4 so that the cooling and dehumidification (cooling, decrease in absolute humidity) operation is performed to blow cool air into the house 20. Is called. When performing the cooling operation, the cool air is blown into the house 20 and the outdoor unit 2 discharges the warm air outside the house 20 in a direction away from the house 20.

  At this time, the air in the house 20 sucked from the indoor blower 7 lowers the temperature by the evaporating heat exchanger 4 and condenses moisture in the air, and releases it to the outside of the house 20 through the drain pan 11.

BB reheat dehumidification operation function For the cooling (cooling) operation function, the high-temperature and high-pressure refrigerant gas discharged from the compressor 3 in the indoor unit 1 is passed through the reheat heat exchanger 5 installed in the indoor unit 1 to dissipate heat. Condensate, expand the refrigerant liquid through the expansion valve 9, and send it to the heat exchanger 4 for evaporation. At this time, the air in the house 20 sucked in by the indoor blower 7 is absorbed and evaporated by the evaporating heat exchanger 4, whereby the temperature is lowered and the absolute humidity is lowered. Further, since the reheat heat exchanger 5 is installed on the secondary side of the circulating air cooled by the evaporative heat exchange 4, the house 20 has warm air (dry air, almost the same temperature as the sucked air). Reheat dehumidification (decrease in relative humidity) is performed.

  Further, during the dehumidifying operation, not only dehumidified wind but also dried hot air can be blown into the house 20, so that the inside of the house 20 can be effectively dehumidified by increasing the air volume during the dehumidifying operation. Is possible. Also at this time, the condensed water as described above is discharged out of the house 20 through the drain pan 11.

CC heating operation function The high-temperature and high-pressure refrigerant gas discharged from the compressor 3 in the indoor unit 1 is caused to flow through the heat exchanger 5 for reheating installed in the indoor unit 1 to dissipate and condense, and through the refrigerant pipe 19 The refrigerant liquid is expanded by the expansion valve 14 in the outdoor unit 2, and the heat is absorbed and evaporated by the heat exchanger 6 for both condensation and evaporation. At this time, a heating operation is performed in which the air in the house 20 sucked by the indoor blower 7 blows warm air into the house 20 in a state where there is no humidity change.

  Furthermore, with regard to the current demand for improvement in electric heat pump packages for horticultural horticulture, the “decrease in relative heating capacity during defrosting operation” is also an issue for normal horticultural electric heat pump packages for both indoor and outdoor units. There are only two heat exchangers, one in total. Therefore, during the defrosting operation, the heating operation is temporarily interrupted, the refrigeration cycle is switched by the four-way valve 10, the cooling (cooling) operation for supplying the superheated refrigerant gas to the outdoor unit is performed, and the frost that has formed on the outdoor unit is removed. It is forced to drive to remove.

  By the above operation, the other indoor unit side becomes a cooling (cooling) operation, which means that the heating capacity is relatively lowered. On the other hand, the air conditioner of this embodiment has another one in the indoor unit. Since there are three heat exchangers in total, even when performing the cooling (cooling) operation as the same defrosting operation, the outdoor unit heat exchanger and the other indoor unit heat exchanger By flowing the refrigerant, it can be considered to suppress a decrease in the relative heating capacity during the defrosting operation as compared with a general current electric heat pump package for facility horticulture.

DD humidification operation function (humidification + heating)
The air conditioner includes a humidification unit 13. This is not operated alone, but is operated together with the heating operation. Since it is not a refrigeration cycle, it is only necessary to supply power. This is referred to as humidification operation. In addition, although the water | moisture content condensed as mentioned above is discharged | emitted out of the house 20 via the drain pan 11, it is also considered to implement | achieve a humidification function by storing this and using as a water | moisture content at the time of humidification. For example, a technique of humidifying using zeolite or the like is known.

  Next, the operation mode will be described. The indoor unit 1 includes a humidification unit 13. Therefore, the refrigeration cycle of this air conditioner has four operation modes. The four are cooling, reheat dehumidification, heating, and humidification. More precisely, cooling, dehumidification, heating, heating + humidification. FIG. 3 shows the operation mode of this embodiment. It represents that any one of the four operation modes is operated.

  These four operation modes are determined for each case. However, this is a basic operation, which is a default operation, and is obtained by obtaining information from the control unit CU30 and the temperature / humidity sensor 12 and appropriately changing the operation mode as follows. Information on temperature and humidity for changing the operation mode will be described later.

  When the operation starts in step S0, any one of the cooling operation, the reheat dehumidifying operation, and the heating operation is performed according to the operation mode selected in step S10. In addition, about heating + humidification operation, it is good to provide a sensor separately and to control. Further, it is assumed that a timer (clock 50 function) that can be arbitrarily set by the user is provided to have a function of automatically performing the operation selected in step S10.

  When the cooling operation is selected in step S10, the cooling operation that is the AA cooling (cooling) operation function described above is performed. It may not be necessary to perform a special cooling operation in the daytime due to good ventilation, but it may be better to perform a cooling operation for certain plants such as Phalaenopsis orchid. In addition, considering the improvement of crop quality and the expansion of cultivars, cooling at night may be appropriate. In such a case, the temperature is high during the day and low during the night. Can also be experienced.

  When heating operation is selected in step S10, the DD heating operation described above is performed. In general, the humidity is low in winter, so humidification may be necessary. In that case, the heating and humidification operation is performed by performing the humidification operation in conjunction with the humidification sensor.

  The air conditioner of the present embodiment is characterized in that a user can arbitrarily switch between a cooling (cooling) operation, a reheat dehumidifying operation, and a heating operation. Further, the humidifying operation can also be switched. This can be selected by selecting means on an operation panel (not shown).

  In addition to this, priority is given to the cooling (cooling) operation and the reheat dehumidification operation. For example, even when the cooling (cooling) operation is selected, the humidity in the house 20 is automatically increased. Alternatively, a reheat dehumidification operation may be performed. Conversely, the cooling (cooling) operation may be prioritized depending on the temperature of the house 20 in which the reheat dehumidifying operation is selected.

  Moreover, providing this priority can also be set between heating operation and reheat dehumidification operation. In this way, a better environment in the house 20 desired by the user can be realized by performing the reheat dehumidifying operation even during the heating operation.

  Switching between these operation modes is performed by a switching means described later based on humidity information and / or temperature information.

  A house 20 such as a vinyl house or a greenhouse (for example, a glass house) is shown. In this house 20, plants such as roses and crops such as melon, tomatoes, cucumbers and strawberries are cultivated. The indoor unit 1 is placed at a predetermined position in the house 20, and the outdoor unit 2 is installed near the indoor unit 1 or at any outdoor location via a refrigerant pipe 19. In normal air conditioning in the house 20, it is better to use the heater 21 together.

  Next, a comparison between the case where there is no warmer 21 and the case where the warmer 21 is used in the case of rain in winter will be briefly described with reference to FIG. FIG. 4 shows a case where (a) the warmer 21 is not provided and (b) a case where the warmer 21 is used together. In each figure, the vertical axis (left) is temperature, the vertical axis (right) is humidity, and the horizontal axis is time.

  When there is no warmer 21 (a), the movement of the outside air temperature is peak during the daytime, and the temperature is low around the early morning and early morning. The movement of the temperature in the house 20 is higher than the outside air temperature, but decreases with the outside air temperature. As the movement of the relative humidity in the house 20, the humidity in the house 20 peaks near midnight, and changes substantially at a constant value or gradually throughout the day.

  On the other hand, when the warmer 21 is used in combination (b), the outside air temperature is not particularly different from the case (a), but the following is possible.

  When the lower limit of the crop management temperature is 10 ° C., the heating operation can be performed by the warmer 21 so that the temperature inside the house 20 indicated by the solid line is 10 ° C. This 10 ° C. can be set by the user.

  Moreover, about the relative humidity in the house 20 represented by the broken line, for example, by operating the warming machine 21 from 18:00 to 6:00 in the next morning, the relative humidity is decreased as the temperature in the house 20 increases. . In the figure, the graph is recessed in a square shape. If the humidity is higher than the limit value at 6:00 to 18:00 when the heater 21 is not operated, the dehumidifying operation may be performed at that portion. In general, it is said that the relative humidity in the house is 90% or more because the occurrence of diseases is high. When this humidity is exceeded, dehumidifying operation is desirable. If the relative humidity in the house is high even when the heating operation with the warmer is performed, there may be a case where the simultaneous operation with the dehumidifying operation is necessary.

  When it is sunny in the winter, the outside air humidity is often abnormally low, and the humidity in the house 20 is often low. In particular, when the lower limit of the management temperature of plants and crops is high, a heating operation during the day is also required, which causes a further decrease in the relative humidity in the house 20. In the case of crops that do not like drying, it may be necessary to perform humidification operation to maintain a certain level of humidity.

Next, more generally, the situation for each season and time zone will be described with reference to FIGS.
Each figure shows an example of a daily driving pattern for a house where roses are cultivated, as (a) clear, (b) cloudy, (c) rain for each weather, and the vertical axis (left) is temperature. The vertical axis (right) is humidity, and the horizontal axis is time. Further, the solid line represents the temperature in the house 20, the broken line represents the humidity in the house 20, and the alternate long and short dash line represents the outside air temperature.

  FIG. 5 shows an intermediate period, and the operation (a) reduces the running cost of the warming machine 21 and improves the quality by raising and managing the crops and plants to grow straight. For this reason, the CC heating operation is performed so that the temperature is kept at 20 ° C. or higher from 19:00 to 9:00 the following morning, and the DD humidification operation is performed so that 60 to 70% is maintained from 9:00 to 19:00 in the daytime.

  It is as follows when we refer to the quality of crops and plants. For example, the quality of rose deteriorates due to diseases and the like at high humidity. This is because bacteria are likely to adhere to the leaves. At low humidity, the quality deteriorates due to the stem being bent and growing at the nodes (see FIG. 12). Appropriate temperature and humidity are, for example, about 15 to 20 ° C. and about 60 to 85% for roses.

  The operation of (b) and (c) in FIG. 5 is intended to reduce the running cost of the warming machine 21 and improve the quality so that crops and plants can grow without disease. For this reason, the CC heating operation is performed so as to maintain 20 ° C. or higher from 19:00 to 9:00 the following morning, and the BB dehumidifying operation is performed so that 70 to 80% is maintained from 9:00 to 19:00 in the daytime. When it rains, the humidity becomes high, so the leaves become wet easily. If this happens, the quality will be degraded as described above, so it is important to perform reheat dehumidification to prevent the bacteria from adhering to the leaves.

  FIG. 6 shows the summer, and the operations (a) and (b) are aimed at improving quality by improving growth. For this reason, the AA cooling operation is performed so that the temperature is kept at 20 ° C. or higher from 19:00 to 9:00 the following morning, and 70 to 80% is maintained from 9:00 to 19:00 in the daytime.

  The operation of (c) in FIG. 6 aims at quality improvement by growth improvement and quality improvement without disease. For this reason, the AA cooling operation is performed so that the temperature is kept at 20 ° C. or higher from 19:00 to 9:00 the following morning, and the BB reheat dehumidifying operation is performed so that the temperature is maintained at 70 to 80% from 9:00 to 19:00. Do.

  FIG. 7 shows the winter season, and the operations (a) and (b) improve the quality by reducing the running cost of the warming machine 21 and raising and managing crops and plants to grow straight. For this reason, the CC heating operation is performed so that the temperature is kept at 20 ° C. or higher from 18:00 to 9:00 the following morning, and 60 to 70% is maintained from 9:00 to 18:00 in the daytime.

  The operation shown in FIG. 7C is intended to reduce the running cost of the warming machine 21 and improve the quality so that crops and plants can grow without disease. For this reason, the CC heating operation is performed so that the temperature is kept at 20 ° C. or higher from 18:00 to 9:00 the following morning, and the reheating dehumidification operation of BB is performed so that 70 to 80% is maintained from 9:00 to 18:00 in the daytime. Do.

  In these AA cooling operation, BB reheat dehumidification operation, CC heating operation, and DD humidification operation, feedback control is performed to keep the temperature and humidity within a certain range so as to maintain the set humidity and the set temperature, respectively. The determination in step S0 is repeated at regular time intervals (ex. 15 minutes). The season and day / night time zones are set by default, but the user can change them and the operation is performed by the indoor unit 1.

  Furthermore, it is convenient if it is possible to set in advance a program operation that switches the operation at each time. If it is configured so that the program operation is possible, for example, from 8 o'clock to 12 o'clock, humidify operation to 15 ° C / 60% or more, and from 12 o'clock to 17 o'clock, humidification operation to 20 ° C / 70% or more, 17:00 From 0:00 to 0 o'clock, heating control or dehumidification operation makes 85% or less, and from 0 o'clock to 8 o'clock in the next morning, fine control is possible to make heating operation or dehumidification operation less than 80%, making it relatively easy to produce high quality crops. Can grow plants.

  In this way, by providing an automatic operation switching function, that is, a switching means so that the switching can be performed four or more times a day, it is possible to grow crops and plants with good handling. This operation pattern switching can be performed at an arbitrary time period of four or more times a day. By setting the temperature and humidity, it is possible to satisfy the unique requirements of each horticultural house. The air conditioner of the present embodiment has such an automatic operation switching function and can perform a program operation.

  8 to 10, reference numeral 20 denotes a house 20 such as a vinyl house or a greenhouse (for example, a glass house), in which plants such as roses and crops such as melons, tomatoes, cucumbers and persimmons are cultivated. Is. The indoor unit 1 is placed at a predetermined position in the house 20, and the outdoor unit 2 is installed near the indoor unit 1 or at any outdoor location via a refrigerant pipe 19.

In normal air conditioning in the house 20, it is better to use the heater 21 together.
FIG. 8 is a schematic diagram of construction in which the indoor unit 1 is installed in the house 20, the outdoor unit 2 is installed outside the house 20, and connected by the refrigerant pipe 19.

  FIG. 9 is a schematic diagram showing a state in which the wind blown from the blower 7 in the indoor unit 1 is blown directly into the house 20 from the pipe (the telescopic duct 16).

  FIG. 10 is a schematic view showing a state in which the wind blown from the blower 7 in the indoor unit 1 is blown uniformly into the house 20 with the vinyl duct 17 attached to the tip of the tube (expandable duct 16). .

  The cool air and warm air blown out are blown directly into the house 20 from the housing of the indoor unit 1 as shown in FIG. 8, and FIG. 9 is attached with a chamber box 15 for blowing out, and can be further attached and detached. There is a type using a duct 16 that can freely change the direction of the bellows that can be stretched and contracted freely.

  Further, in order to reduce temperature drop and unevenness in the house 20, a vinyl duct 17 is attached to the tip of the telescopic duct 16 as shown in FIG. As a result, the circulation of the airflow in the house 20 is improved, and there is an effect that variations in humidity and temperature in the entire house 20 can be reduced. Also, the wind does not hit plants or crops directly, but reaches far away. This effect is very large, and is particularly effective for disease control and disease prevention in cultivation of roses and the like.

  In the case of FIGS. 8 and 9, the duct 16 can be attached to both the front surface and the upper surface, so that it can be freely arranged for ease of use.

  In FIG. 11, the indoor unit 1 and the outdoor unit 2 and the refrigerant pipe 19 are provided on a common integrated frame, installed on the outdoor wall surface of the house 20, an opening is provided in the house 20, and suction air and blowing air are circulated. It is a schematic diagram which shows the state which performs the air conditioning in the house 20. FIG.

  Reference numeral 1 denotes an indoor unit which is disposed outside the room. This is because air is blown into the house 20. When configured as such an integrated air conditioner, it is possible to place the integrated common frame 18 in another place in the house 20 only by transporting the integrated common frame 18. It can be moved and installed at any time. In the past, when moving or moving, it was virtually impossible to move or move the refrigerant once it was necessary to recover the refrigerant and re-execute the construction. However, the initial cost was eliminated by eliminating such troublesome work. Can also be reduced.

  By using the air conditioner of this embodiment having cooling, reheat dehumidification, and heating functions, it becomes possible to create an optimal temperature and humidity environment for the above-mentioned disease countermeasures / prevention and cultivated plants, etc. It can also be used as an auxiliary heater for the system warmer 21.

  In this air conditioner, not only can the inside of the house 20 be dehumidified, but also cooling (cooling), heating (heating) and humidification are possible. Further, the air conditioner can be moved to a predetermined position in the house 20 with a carriage or crane. By using it freely, changing the direction of the duct, and expanding and contracting, air conditioning in a predetermined area is possible at any time.

  In the heat exchanger and refrigeration cycle components of the indoor unit in which the air in the house 20 circulates, dust such as fertilizer powder and agricultural chemicals enters the air conditioner, corroding the copper refrigerant piping or causing failure. Anti-corrosion coating is applied to avoid this. This is a level that belongs to the salt damage of a general outdoor unit, but coating by cationic electrodeposition is also possible.

  If the compressor 3 and each heat exchanger 4, 5, 6 are connected by a copper refrigerant pipe coated with anti-corrosion, sufficient capacity can be obtained even in the environment around the greenhouse where chemicals are used. It is possible to obtain a highly reliable heat pump air conditioner for a facility horticultural house by preventing corrosion against chemicals and the like.

  Moreover, it is preferable that the inside of the house 20 be very hot in the summer and be able to exert its ability even in an environment exceeding 40 ° C., for example, a high temperature environment of 40 to 48 ° C. In this embodiment, dehumidification and cooling can be performed even under such a high temperature environment. That is, the reheat heat exchanger 5 has a larger size (heat exchange area, heat exchange capacity) than the evaporation heat exchanger 4, and the indoor blower 7 is a sirocco fan, so that the condensing capacity is sufficiently high. We are trying to secure it.

  Further, since the indoor blower 7 is a sirocco fan, the static pressure can be increased, so that the wind can be blown far away even if the duct 16 and the vinyl duct 17 are lengthened. That is, by using a sirocco fan, it becomes possible to ensure static pressure and air volume, and even in combination with an expansion duct, an extended vinyl duct, etc., it is possible to easily air-condition a predetermined area.

Moreover, the electric heat pump package for facility horticulture having the current heating operation function can be used as an auxiliary heater for the combustion system warmer 21 to reduce CO ₂ by switching from the combustion system to the electric system. is there.

1 Indoor Unit 2 Outdoor Unit 3 Compressor 4 Indoor Heat Exchanger A
5 Indoor heat exchanger B
6 Outdoor heat exchanger 7 Indoor blower 8 Outdoor blower 9 Indoor expansion valve 10 Four-way valve 11 Drain pan 12 Temperature / humidity sensor 13 Humidification unit 14 Outdoor expansion valve 15 Chamber box 16 Duct 17 Vinyl duct 18 Integrated common mount 19 Refrigerant piping 20 House 21 Heating machine 30 Control unit CU
50 Clock function

Claims (6)

In a heat pump air conditioner for a facility horticulture house capable of reheat dehumidification operation,
A control device that receives information from each sensor and outputs a control signal to each device, the control device having a time function,
A humidifying unit;
A selection means for selecting cooling (cooling) operation, reheat dehumidification operation, heating operation, humidification operation,
A heat pump air conditioner for a horticultural house equipped with In the heat pump type air conditioner for facility horticultural house capable of reheat dehumidification operation by providing a plurality of heat exchangers in the indoor unit and providing an expansion device between them,
A control device that receives information from each sensor and outputs a control signal to each device, the control device having a time function,
A humidifying unit;
With
Based on information from the clock function, the control device performs the humidification operation by operating the humidification unit,
A heat pump air conditioner for a facility horticultural house that performs a reheat dehumidifying operation by controlling the expansion device based on information from the clock function. In claim 1 or 2,
A heat pump air conditioner for a facility horticultural house characterized by having switching means for switching each operation mode of cooling operation, reheat dehumidification operation, heating operation, and humidification operation. In claim 3,
A heat pump air conditioner for a facility horticultural house, comprising switching means for switching between a cooling operation and a reheat dehumidifying operation based on humidity information and / or temperature information. In claim 3,
A heat pump air conditioner for a facility horticultural house, comprising switching means for switching between heating operation and reheat dehumidification operation based on humidity information and / or temperature information. In claim 3,
A heat pump type air conditioner for a facility horticulture house, comprising switching means for switching between cooling operation and reheat dehumidification operation, heating operation and reheat dehumidification operation according to priority.

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