JP6361904B2 - Air conditioning system - Google Patents

Description

The present invention is an air conditioning system intended for buildings, to an air conditioning system configured for particular combination Heating & Cooling from air conditioning and ceiling surface by the supply air from the air conditioner of the air-cooled heat pump package system.

  There are various types of air conditioning systems for buildings. Previously, large amounts of cold water and hot water prepared by central heat source equipment such as large-scale refrigerators, boilers, and cold / hot water generators that meet the load of the entire building were used. In general, the central system is a system that distributes and supplies the entire building through large-diameter pipes using large-capacity pumps. However, in recent years, relatively small air conditioners have been distributed throughout the building. The mainstream is an individual system that operates and controls them independently.

  In particular, the air-cooled heat pump package type air conditioner (air conditioner) among the individual methods is a room to be air-conditioned by preparing a cold air or a hot air in the indoor unit by circulating a refrigerant between the outdoor unit and the indoor unit. The entire system can be configured easily and inexpensively, and can be operated and controlled independently for each air-conditioned room, which is efficient and can be combined into a single outdoor unit. On the other hand, since a rational multi-system can be configured by combining a plurality of indoor units, it is widely used as the most common air conditioning system.

  For example, as shown in Patent Document 1, there is also a proposal for an apparatus that performs radiant cooling and heating by supplying cold water or hot water to panels installed on a ceiling, floor, or wall.

JP-A-7-174368

The radiant cooling and heating system is an effective system that can efficiently provide a comfortable environment, but various radiant cooling and heating systems proposed at the present time prepare cold water or hot water with a central heat source and supply it with a pump. The system is indispensable, and the entire system must be complicated and large.
Therefore, while the effectiveness of the radiant cooling and heating system is recognized, it is difficult to apply it to relatively small or simple buildings where the individual air conditioning system is applied. It is only applied to large-scale buildings and special buildings that apply the above, but has not yet spread widely.

  In view of the above circumstances, an object of the present invention is to provide a rational, effective and appropriate air conditioning system that can widely apply ceiling radiant cooling and heating to general buildings.

First aspect of the present invention is composed of the air conditioner of the air-cooled heat pump package system configuration for preparing a cold or warm air in the indoor unit by circulating the refrigerant between the outdoor unit and the indoor units mainly An air conditioning system configured to perform air conditioning on the air-conditioning target room by supplying cold air or hot air prepared by the indoor unit to the air-conditioning target room, wherein the refrigerant is placed in a refrigerant pipe in the air-conditioning unit. A heat exchanger unit that prepares cold water or hot water selectively designated by heat exchange with the heat exchanger is installed, and the cold water or hot water prepared by the heat exchanger unit is installed on the ceiling surface in the air conditioning target room through the cold / hot water pipe Circulating and supplying to the ceiling radiant panel is configured to perform radiant cooling and heating from the ceiling surface to the air conditioning target room, and the heat exchanger unit includes the refrigerant and the front A heat exchanger body for exchanging heat with cold water or hot water, a pump for circulating the cold water or hot water between the heat exchanger body and the ceiling radiant panel through the cold / hot water pipe, and the cold water Or an expansion tank for absorbing thermal expansion of hot water, and control means for controlling the temperature of the cold water or hot water by controlling the amount of the refrigerant supplied to the heat exchanger body by operating an expansion valve; It is characterized by comprising.
The invention according to claim 2 is characterized in that the heat exchanger main body, the pump, the expansion tank, and the control means of the heat exchanger unit are housed in one casing.
The invention according to claim 3 is characterized in that the heat exchanger unit is installed in a ceiling space of a non-residential room.

Invention of Claim 4 is an air-conditioning system as described in any one of Claim 1 to 3, Comprising: The interior load in the said air-conditioning object room | chamber can be processed with the said ceiling radiation | emission panel, and the said air-conditioning with the said indoor unit The perimeter load in the target room can be processed.

A fifth aspect of the present invention is the air conditioning system according to any one of the first to fourth aspects , wherein the outdoor unit can process an outdoor air load in the air conditioning target room.

A sixth aspect of the present invention is the air conditioning system according to any one of the first to fifth aspects , wherein air is exhausted from the air-conditioning target chamber while introducing the external air into the air-conditioning target chamber, and the outside air and the exhaust are exhausted. And an outside air processing device for controlling the humidity of the air-conditioning target room by exchanging moisture with the outside.

According to the present invention, there is no need to assume a large central air conditioning system to adopt a radiant cooling and heating system as in the prior art, and a simple individual air conditioning system based on a general-purpose air-cooled heat pump package type air conditioner is basically used. In addition, a rational and efficient air conditioning system that organically combines ceiling radiation cooling and heating systems can be realized.
Therefore, according to the present invention, a comfortable and efficient ceiling radiant cooling and heating system using a ceiling radiating panel can be applied to various buildings including small buildings and simple buildings without any trouble.

It is a figure which shows one Embodiment of the air conditioning system of this invention. It is a figure which shows other embodiment of the air conditioning system of this invention.

FIG. 1 is a diagram showing an embodiment of an air conditioning system of the present invention.
This air-conditioning air-cooled heat pump package system configuration for preparing a cold or warm air in the indoor unit 3 by circulating the refrigerant between them an outdoor unit 2 and the indoor units 3 are connected by refrigerant pipe 4 The apparatus 1 is mainly configured, and the cold air or the hot air prepared by the indoor unit 3 is supplied to the air conditioning target room 5 as the air supply SA via the air supply duct 6, thereby supplying the air conditioning target room 5 to the air conditioning target room 5. It is set as the structure which performs an air-conditioning, and it is set as the structure which performs radiant cooling / heating by the ceiling radiant panel 7 installed in the ceiling surface of the air-conditioning object room 5, and also the radiant cooling / heating by the ceiling radiant panel 7 is said air conditioner 1 (namely, air cooling). and focus on be carried out by the heat pump package).

  That is, in the air conditioning system of the present embodiment, a heat exchanger unit 8 that prepares cold water or hot water by heat exchange with the refrigerant is installed in the middle of the refrigerant pipe 4 in the air conditioner 1, and the heat exchanger unit 8 prepares it. By circulating and supplying cold water or hot water to the ceiling radiation panel 7 through the cold / hot water pipe 15, the air-conditioning target room 5 is configured to perform radiant cooling and heating from the ceiling surface.

  The heat exchanger unit 8 in the present embodiment includes a heat exchanger body 9 that performs heat exchange between cold water or hot water (hereinafter referred to as cold / hot water) supplied to the ceiling radiating panel 7 and a refrigerant, and cold / hot water as cold / hot water. Pump 10 for circulating between heat exchanger body 9 and ceiling radiant panel 7 through pipe 15, expansion tank 11 for absorbing thermal expansion of cold / hot water, and supply of refrigerant to heat exchanger body 9 And control means 12 for controlling the temperature of the cold / hot water by controlling the amount by operating the expansion valve.

Note that the heat exchanger unit 8 of the present embodiment preferably has a compact shape and dimensions that can be installed in a double ceiling, for example, as a configuration in which all the above-described elements are housed in the casing 13. .
In addition, by installing the heat exchanger unit 8 in the ceiling space of a non-living room (non-important room) such as a corridor, even if a water leakage accident occurs, the damage can be minimized.
In addition, the expansion tank 11 is hermetically sealed so that makeup water is not supplied to it, and a drain pan (not shown) is provided at the bottom of the casing 13 so that a water leakage accident should occur. However, it is possible for the retained water to leak, and it is possible to reliably prevent the water leakage damage by receiving it with the drain pan.

In this embodiment, the interior load in the air conditioning target room 5 is mainly processed by the ceiling radiating panel 7, and the indoor unit 3 can mainly process the perimeter load and the outside air load in the air conditioning target room 5.
That is, the perimeter zone facing the outer wall of the air-conditioned room 5 has a larger heat loss (skin load) and solar radiation load through the outer wall than the internal interior zone. By supplying the air SA directly and intensively to the perimeter zone through the air supply duct 6, the cooling / heating capacity for the perimeter zone is enhanced.
In addition, you may install a fan coil unit in a perimeter zone, and it is also possible to supply the cold / hot water prepared by said heat exchanger unit 8 to the fan coil unit in that case.

Furthermore, in the present embodiment, the required amount of outside air OA to be supplied to the air-conditioning target room 5 is taken into the indoor unit 3 through the outside air duct 16 and is supplied together with the supply air SA after performing a predetermined outside air treatment. Yes.
In the illustrated example, only the supply air SA and the outside air OA are supplied from the indoor unit 3, but if necessary, the return air RA from the air-conditioning target room 5 is passed through the return air duct 17 as shown by the broken line. The exhaust gas may be circulated by returning to the exhaust air, or may be exhausted in accordance with the amount of outside air OA introduced.

  According to the air conditioning system of the present embodiment, the heat exchanger unit 8 and the ceiling radiating panel 7 are added to the general air conditioning system using the general-purpose air-cooled heat pump package type air conditioner 1, so that the indoor unit 3 It is possible to use both air conditioning and heating by the air supply SA and radiation cooling and heating from the ceiling surface by the ceiling radiating panel 7 without any trouble.

  Further, the heat exchanger unit 8 used in the present embodiment has a simple and compact configuration in which the heat exchanger main body 9, the pump 10, and the entire expansion tank 11 are incorporated in the casing 13. In order to control the temperature of the cold / hot water to be prepared, the control means 12 configured to control the supply amount of the refrigerant by the operation of the expansion valve is also incorporated, so that sophisticated control by a complicated and expensive electric three-way valve for water temperature control is incorporated. In this respect, the entire system can be constructed sufficiently easily and inexpensively.

  From the above, according to the present invention, there is no need to assume a large-scale central air conditioning system in order to apply a radiant cooling / heating system as in the prior art. It is possible to realize an efficient air conditioning system that organically combines a ceiling radiant cooling and heating system with a basic individual air conditioning system, and it can be applied to various buildings including small buildings and simple buildings. However, comfortable and efficient radiation cooling and heating by the ceiling radiating panel 7 can be rationally applied.

FIG. 2 shows another embodiment of the air conditioning system of the present invention.
In the previous embodiment shown in FIG. 1, the outside air processing is performed by the indoor unit 3. However, in this embodiment, the outside air processing is performed by the dedicated outside air processing device 20.

  That is, the outside air processing apparatus 20 in the present embodiment performs exhaust EA from the air conditioning target chamber 5 through the exhaust duct 18 while introducing the outside air OA into the air conditioning target chamber 5 through the outside air duct 16, and the outside air OA and the exhaust EA. It is set as the structure which controls the humidity of the air-conditioning object room 5 by exchanging a water | moisture content between.

  As such an outside air processing apparatus 20, the thing of the structure which combined the desiccant adsorbent which is a raw material which adsorb | sucks and discharge | releases a water | moisture content, and a heat pump, specifically, the heat pump which functions as an evaporator and a condenser alternately. The desiccant adsorbent is attached to each of the two heat exchangers, and one heat exchanger functions as an evaporator to adsorb (dehumidify) moisture to the desiccant adsorbent while simultaneously exchanging the other heat. It is possible to suitably employ a configuration in which moisture is discharged (humidified) from the desiccant adsorbent by allowing the air-conditioning system to function as a condenser, and the outside air treatment device 20 is provided for the air conditioning system of the present invention. Thus, the humidity of the air-conditioning target room 5 can be finely controlled with high accuracy.

In this embodiment, it is assumed that a part of the interior load is processed by the indoor unit 3, and it is assumed that the supply air SA is supplied to the entire air-conditioned room 5 as shown in the figure. Similarly to the embodiment, it is also possible to supply the air supply SA intensively to the perimeter zone so that only the perimeter load is processed by the indoor unit 3.
Conversely, also in the previous embodiment, as in the present embodiment, the indoor unit 3 may process not only the perimeter load but also a part of the interior load so that the supply air SA is supplied to the entire air-conditioned room 5. Of course, it is of course possible to add the outside air processing apparatus 20 of the present embodiment to the previous embodiment.

1 Air conditioner (Air-cooled heat pump package)
DESCRIPTION OF SYMBOLS 2 Outdoor unit 3 Indoor unit 4 Refrigerant piping 5 Air-conditioning target room 6 Air supply duct 7 Ceiling radiation panel 8 Heat exchanger unit 9 Heat exchanger body 10 Pump 11 Expansion tank 12 Control means (expansion valve)
13 Casing 15 Cold / Hot Water Pipe 16 Outside Air Duct 17 Return Air Duct 18 Exhaust Duct 20 Outside Air Treatment Device

Claims (6)

Consists of an air conditioner of an air-cooled heat pump package system configuration for preparing a cold or warm air in the indoor unit by circulating the refrigerant between the outdoor unit and the indoor units mainly cool air prepared by the indoor unit Or an air conditioning system configured to perform air conditioning on the air conditioning target room by supplying warm air to the air conditioning target room,
A heat exchanger unit for preparing cold water or hot water selectively designated by heat exchange with the refrigerant is installed in the middle of the refrigerant pipe in the air conditioner, and the cold water or hot water prepared by the heat exchanger unit is installed in the cold / hot water pipe. It is configured to perform radiant cooling and heating from the ceiling surface to the air conditioning target room by circulatingly supplying the ceiling radiation panel installed on the ceiling surface to the air conditioning target room through,
The heat exchanger unit includes: a heat exchanger main body that exchanges heat between the refrigerant and the cold water or hot water; and the heat exchanger main body and the ceiling radiant panel that pass the cold water or hot water through the cold / hot water pipe. A pump for circulating between them, an expansion tank for absorbing thermal expansion of the cold water or hot water, and an amount of the refrigerant supplied to the heat exchanger body by controlling an operation of an expansion valve to control the cold water or An air conditioning system comprising a control means for controlling the temperature of the hot water.   2. The air conditioning system according to claim 1, wherein the heat exchanger main body, the pump, the expansion tank, and the control means of the heat exchanger unit are housed in one casing.   The air conditioning system according to claim 1 or 2, wherein the heat exchanger unit is installed in a ceiling space of a non-residential room. The air conditioning system according to any one of claims 1 to 3 ,
An air conditioning system characterized in that an interior load in the air conditioned room can be processed by the ceiling radiating panel, and a perimeter load in the air conditioned room can be processed by the indoor unit. The air conditioning system according to any one of claims 1 to 4 ,
An air conditioning system characterized in that an outside air load in the air conditioning target room can be processed by the indoor unit. The air conditioning system according to any one of claims 1 to 5 ,
An outside air processing device is provided that controls the humidity of the air-conditioning target room by exhausting air from the air-conditioning target room while introducing outside air into the air-conditioning target room and exchanging moisture between the outside air and the exhaust. An air conditioning system characterized by

Images