JP2004036918A - Heat pump-type air conditioning system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat pump-type air conditioning system capable of easily performing VAV independent control. <P>SOLUTION: This air conditioning system comprises a heat pump-type air conditioner 1, a plurality of air supply ducts 2 for supplying the air from the heat pump-type air conditioner 1 to an air-conditioned zone, and air volume controlling units 3 for controlling the air supply volume of every air supply duct 2. An output control means 6 is mounted for totalizing integrated values of a volume point of the air volume controlling units of every air supply duct 2 and an inner diameter ratio point of the air supply duct for every air supply ducts, and controlling the air volume of an air blower 4 supplying the air of the heat pump-type air conditioner 1, and the capacity of a compressor 5 for the heat pump on the basis of a ratio of the totalized integrated value to the totalized integrated value in the maximum volume of the whole air volume controlling units. <P>COPYRIGHT: (C)2004,JPO

Description

【０００８】
この変風量ユニットボリュームポイントと給気ダクト内径比ポイントの積算値を給気ダクト２毎に算出し、それらを全給気ダクト分合計する。その合計積算値が全変風量ユニット最大ボリューム時合計積算値に対して何割あるかによって、ヒートポンプ式空調機１の送風機４の風量とヒートポンプ用圧縮機５の容量を変動させる。例えば表２のように給気ダクト２の内径（ｍｍ）が７５、１００、１００、２００であったとすると、全変風量ユニット最大ボリューム時の合計積算値が４８となる。そして、空調機運転中の変風量ユニットボリュームポイントが、給気ダクトＮｏ１が４（強）、給気ダクトＮｏ２が３（中）、給気ダクトＮｏ３が２（弱）、給気ダクトＮｏ４が３（中）の場合、合計積算値が３５となるので、送風機４と圧縮機５を定格出力の７３％（３５／４８×１００）で駆動し、全体の給気バランスをとり省エネ化を図る。なお、前記の各ポイント数値は一例であり変更は自由である。また、図示省略するが、給気ダクト２毎の変風量ユニットボリュームポイントと給気ダクト内径比ポイントとの積算値を全給気ダクト分合計すると共にその合計積算値の全変風量ユニット最大ボリューム時合計積算値に対する比に基いてヒートポンプ式空調機１の給気用送風機４の風量制御のみを行う出力制御手段６に、構成するも自由である。
【０００９】
【表２】

【００１０】
風量混合比制御手段１０は、複数種類の各空気温度と混合後の空気温度を検出する温度検出手段１３と、複数種類の空気の予定の風量比設定値を設定する設定手段３１と、温度検出手段１３による各検出温度から複数種類の空気の現状の風量比計算値を演算する演算手段３２と、この風量比計算値が予定の風量比設定値になるようにダンパ機構９へ補正分の風量増減信号を出す指令手段３３と、混合前の複数種類の空気の各検出温度が同値の場合に予定の風量比設定値になるようにダンパ機構９へ特定の風量増減信号を出す補助手段３４と、備えている。図例では、各種類毎の空気温度を検出する混気前温度検出器１４、１５と混気後温度検出器１６にて温度検出手段１３を構成している。またダンパ機構９は、ヒートポンプ式空調機１に設けた風量調整ダンパ１１、１２にて構成しているが、その構成変更は自由で、複数種類の空気を風量比率調整自在に混合できる機構のものであればよい。なお、ダンパ機構９と温度検出手段１３は空調機以外にチャンバやダクトなどの機器に設けるも自由である。
【００１１】
混合前の複数種類の空気を例えば外気と還気として説明すると、送風状態で、還気温度と外気温度と混合後の還外混気温度を温度検出手段１３で検出し、還気温度と外気温度が同値でない場合は、空気線図などに基いて還気温度と外気温度と還外混気温度から還気：外気の風量比計算値を演算手段３２で演算し、この現状の風量比計算値と、設定手段３１で設定した風量比設定値と、の差がなくなるようにダンパ機構９へ補正分の風量増減信号を出力する。還気温度と外気温度が同値の場合は予定の風量比設定値になるように経験的に定められた特定の風量増減信号をダンパ機構９へ出力して制御する。なお、風量混合比制御手段１０は、蒸発器７側での風量混合比制御だけでなく、凝縮器８側での風量混合比制御に用いるも自由である（図示省略）。また、空気種は外気と還気以外であってもよく、空気種の数の増減も自由である。
【００１２】
【発明の効果】
請求項１と２の発明では、個別空調制御が簡単容易で、高価なセンサが不要である。変風量ユニットの風量変動に応じて空調機側の送風機風量と圧縮機容量を変動させて空調することができるので、省エネとなり、吹出風量のしぼりすぎによる気流の不均一や温度ムラなどを防止し得る。
請求項２の発明では、高価なセンサを用いずに風量混合比制御を行える。風量比算出の基となる温度は、検出が容易で場所による検出値のバラツキもなく、複数種類の空気の混合比を精度良く制御できる。空調機における外気や還気などのミキシングや、チャンバ類でのミキシングなど幅広く活用できる。
【図面の簡単な説明】
【図１】本発明の一実施例を示す説明図である。
【図２】空調システムの簡略構成図である。
【符号の説明】
１　　ヒートポンプ式空調機
２　　給気ダクト
３　　変風量ユニット
４　　送風機
５　　圧縮機
６　　出力制御手段
９　　ダンパ機構
１０　風量混合比制御手段[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a heat pump air conditioning system.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in individual air conditioning using a variable air volume duct method (VAV), a change in static pressure due to a variation in VAV air volume is detected by a pressure sensor, and air volume control on the air conditioner side is performed according to the variation.
[0003]
[Problems to be solved by the invention]
Therefore, there is a problem that the control is complicated and the cost increases. Further, for example, when air is supplied by mixing the outside air and the return air at a predetermined ratio with an air conditioner, the air volume adjustment damper is controlled based on the wind speed of the outside air and the return air detected by the wind speed sensor, and the predetermined mixture ratio is set. However, the wind speed sensor is expensive and has a problem in that the detection value varies depending on the installation location, so that it is difficult to install and detect the wind speed sensor, and the accuracy of the mixing ratio is reduced. Then, it aims at providing the heat pump type air conditioning system which solves these problems.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a heat pump type air conditioner, a plurality of air supply ducts for supplying air from the heat pump type air conditioner to a zone to be air-conditioned, and adjusting an air supply amount of the air supply duct. When the total value of the variable air volume unit and the variable air volume unit volume point for each air supply duct and the air supply duct inner diameter ratio point is summed for all air supply ducts, and the total air volume unit total volume of the total integrated value is at the maximum volume Output control means for controlling only the air volume of the air supply fan of the heat pump air conditioner based on the ratio to the total integrated value or for controlling the air volume of the air supply fan and the capacity control of the heat pump compressor. It is. A heat pump air conditioner, a plurality of air supply ducts for supplying air from the heat pump air conditioner to the air-conditioned zone, a variable air volume unit capable of adjusting an air flow rate of the air supply duct, The integrated value of the variable air volume unit volume point and the air supply duct inner diameter ratio point for each duct is summed for all air supply ducts, and based on the ratio of the total integrated value to the total integrated value of all the variable air volume units at the maximum volume, the heat pump is used. Output control means for controlling only the air flow rate of the air supply blower of the air conditioner or controlling the air flow rate of the air supply blower and the capacity control of the heat pump compressor, and a damper mechanism for freely adjusting the air flow ratio of a plurality of types of air And an air flow mixing ratio controlling means for controlling the damper mechanism so as to attain a predetermined air flow mixing ratio based on the plurality of types of air temperatures and the air temperature after mixing. When, those having a.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
1 and 2 show an embodiment of a heat pump type air conditioning system according to the present invention. The air conditioner system is provided for supplying air to a zone to be air conditioned from the heat pump type air conditioner 1. A plurality of air supply ducts 2, a variable air volume unit 3 capable of adjusting the amount of air supplied to the air supply duct 2, and a variable air volume unit volume point for each of the air supply ducts 2 and an air supply duct inner diameter ratio point. The integrated value is summed for all the air supply ducts, and based on the ratio of the total integrated value to the total integrated value at the time of the maximum volume of all variable air volume units, the air volume control of the air supply blower 4 of the heat pump type air conditioner 1 and the heat pump compression. Output control means 6 for controlling the capacity of the machine 5, a damper mechanism 9 for mixing a plurality of types of air so that the air volume ratio can be adjusted, and a temperature of each of the plurality of types of air and an air temperature after mixing. Based in includes a air volume mixing ratio control means 10 for controlling the damper mechanism 9 to a predetermined air volume mixing ratio, a. In addition, the wind direction (blowing direction) is indicated by solid and dotted outline arrows.
[0006]
The heat pump air conditioner 1 includes at least an evaporator 7, a condenser 8, a compressor 5, and a blower 4 that constitute a refrigerant circuit C. The blower 4 is configured to be capable of controlling the air volume, and the compressor 5 has a capacity. It is configured to be controllable. The variable air volume unit 3 is automatically or manually driven according to the heat load of a zone to be air-conditioned such as a room, and individually controls the amount of air supplied to each air supply duct 2. For example, a variable air volume unit volume point for a change in supply air volume is set such as 0 points for "off", 2 points for "low", 3 points for "medium", and 4 points for "high". Although the variable air volume unit 3 is provided for each air supply duct 2, it may be provided at a different portion from the example in the drawing. Each air supply duct 2 is in communication with the heat pump type air conditioner 1. Since the air flow rate of the air supply duct 2 changes depending on the air supply duct inner diameter (cross-sectional area), the air supply duct inner diameter ratio point on the upstream side of the variable air volume unit is set as a correction coefficient, for example, as shown in Table 1.
[0007]
[Table 1]

[0008]
The integrated value of the variable air volume unit volume point and the air supply duct inner diameter ratio point is calculated for each air supply duct 2, and these are summed for all air supply ducts. The air volume of the blower 4 of the heat pump type air conditioner 1 and the capacity of the heat pump compressor 5 are varied depending on the percentage of the total integrated value with respect to the total integrated value at the time of the maximum volume of all the variable air volume units. For example, if the inside diameter (mm) of the air supply duct 2 is 75, 100, 100, and 200 as shown in Table 2, the total integrated value at the time of the maximum volume of all the variable air volume units is 48. The air volume unit volume points during air conditioner operation are as follows: supply air duct No1 is 4 (strong), air supply duct No2 is 3 (medium), air supply duct No3 is 2 (weak), and air supply duct No4 is 3 In the case of (medium), since the total integrated value is 35, the blower 4 and the compressor 5 are driven at 73% (35/48 × 100) of the rated output, and the whole air supply balance is achieved to save energy. It should be noted that the above-mentioned point numerical values are merely examples, and can be freely changed. Although not shown, the integrated value of the variable air volume unit volume point for each air supply duct 2 and the internal diameter ratio point of the air supply duct is summed for all air supply ducts, and the total integrated value of the total air volume unit maximum volume is used. The output control means 6 for controlling only the air volume of the air supply blower 4 of the heat pump air conditioner 1 based on the ratio to the total integrated value may be freely configured.
[0009]
[Table 2]

[0010]
The air volume mixing ratio control unit 10 includes a temperature detection unit 13 for detecting a plurality of types of air temperatures and an air temperature after mixing, a setting unit 31 for setting a predetermined air volume ratio set value for the plurality of types of air, and a temperature detection unit. Means 13 for calculating the current air volume ratio calculation values of a plurality of types of air from the respective detected temperatures by the means 13; and a correction air volume to the damper mechanism 9 so that the air volume ratio calculation value becomes a predetermined air volume ratio set value. Commanding means 33 for issuing an increase / decrease signal; and auxiliary means 34 for issuing a specific airflow increase / decrease signal to the damper mechanism 9 so that when the detected temperatures of a plurality of types of air before mixing are the same, a predetermined airflow ratio set value is obtained. , Have. In the illustrated example, the temperature detector 13 is composed of pre-air-mixing temperature detectors 14 and 15 for detecting the air temperature of each type and a post-air-mixing temperature detector 16. The damper mechanism 9 is composed of air volume adjustment dampers 11 and 12 provided in the heat pump type air conditioner 1. The configuration can be freely changed, and a mechanism capable of freely mixing a plurality of types of air with an air volume ratio can be adjusted. Is good enough. In addition, the damper mechanism 9 and the temperature detecting means 13 can be freely provided in devices such as a chamber and a duct other than the air conditioner.
[0011]
If the plurality of types of air before mixing are described as, for example, outside air and return air, the return air temperature, the outside air temperature, and the return outside air mixture temperature after mixing are detected by the temperature detecting means 13 in the blown state, and the return air temperature and the outside air are detected. If the temperatures are not the same value, the calculation means 32 calculates a return air: outside air flow ratio calculation value from the return air temperature, the outside air temperature, and the outside air mixture temperature based on a psychrometric chart or the like. A correction airflow increase / decrease signal is output to the damper mechanism 9 so that the difference between the value and the airflow ratio set value set by the setting means 31 disappears. When the return air temperature and the outside air temperature have the same value, a specific air volume increase / decrease signal which is empirically determined so as to become a predetermined air volume ratio set value is output to the damper mechanism 9 and controlled. The air volume mixing ratio control means 10 may be used not only for the air volume mixing ratio control on the evaporator 7 side but also for the air volume mixing ratio control on the condenser 8 side (not shown). The air type may be other than the outside air and the return air, and the number of the air types may be freely increased or decreased.
[0012]
【The invention's effect】
According to the first and second aspects of the present invention, individual air conditioning control is simple and easy, and an expensive sensor is not required. Air-conditioning can be performed by changing the blower air volume and compressor capacity on the air conditioner side according to the air volume fluctuation of the variable air volume unit, which saves energy and prevents non-uniform air flow and temperature unevenness caused by excessively narrowing the blow-out air volume. obtain.
According to the second aspect of the present invention, the air volume mixing ratio can be controlled without using an expensive sensor. The temperature on which the air volume ratio calculation is based is easy to detect, there is no variation in the detected value depending on the location, and the mixture ratio of a plurality of types of air can be controlled with high accuracy. It can be widely used for mixing outside air and return air in air conditioners and mixing in chambers.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing one embodiment of the present invention.
FIG. 2 is a simplified configuration diagram of an air conditioning system.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heat pump type air conditioner 2 Air supply duct 3 Variable air volume unit 4 Blower 5 Compressor 6 Output control means 9 Damper mechanism 10 Air volume mixing ratio control means

Claims (2)

A heat pump type air conditioner 1, a plurality of air supply ducts 2 for supplying air from the heat pump type air conditioner 1 to a zone to be air-conditioned, and a variable air volume unit 3 capable of adjusting the amount of air supplied to the air supply duct 2. The sum of the variable air volume unit volume point and the air supply duct inner diameter ratio point for each air supply duct 2 for all air supply ducts, and the ratio of the total integrated value to the total integrated value of all variable air volume units at the maximum volume. Output control means 6 for controlling only the air volume of the air supply fan 4 of the heat pump type air conditioner 1 or controlling the air volume of the air supply fan 4 and the capacity control of the heat pump compressor 5 based on A heat pump type air conditioning system characterized by the following. A heat pump type air conditioner 1, a plurality of air supply ducts 2 for supplying air from the heat pump type air conditioner 1 to a zone to be air-conditioned, and a variable air volume unit 3 capable of adjusting the amount of air supplied to the air supply duct 2. The sum of the variable air volume unit volume point and the air supply duct inner diameter ratio point for each air supply duct 2 for all air supply ducts, and the ratio of the total integrated value to the total integrated value of all variable air volume units at the maximum volume. Output control means 6 for controlling only the air volume of the air supply fan 4 of the heat pump type air conditioner 1 or for controlling the air volume of the air supply fan 4 and the capacity of the heat pump compressor 5 based on And a damper mechanism 9 for controlling the damper mechanism 9 so that a predetermined air volume mixing ratio is obtained based on the plurality of types of air temperatures and the air temperature after mixing. Heat pump air conditioning system which is characterized by comprising the air volume mixing ratio control means 10 for, a.

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