JPH04110552A - air conditioner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field This invention relates to an air conditioner equipped with a cooler and a heater.

(b) Conventional technology The conventional technology for air conditioners that can dehumidify is as follows:
There is one described in Japanese Patent Publication No. 60-2579.

This air conditioner includes a cooler that cools the air in the ventilation passage and a heater that heats the cooled air, and dehumidifies the air without changing its temperature.

<C) Problems to be Solved by the Invention In the same type of air conditioner as described above, when performing a dehumidifying operation, when the measured humidity is higher than the set relative humidity, the cooler is used to cool the air conditioner, and the heater is used to heat the air conditioner to dehumidify the air conditioner. When the measured temperature was less than the set relative humidity, cooling and heating in the cooler and heater were stopped.

For this reason, even in the case of low temperature and high humidity where heating alone would be sufficient to lower the relative humidity, the energy required for cooling is wasted because cooling and heating are performed using a cooler and a heater.

Furthermore, in cases of high temperature and high humidity where cooling alone is sufficient to lower the relative humidity, the energy required for heating is wasted.

The present invention provides an air conditioner that wastes less energy and can adjust temperature and humidity.

<2) Means for Solving the Problems This invention provides an air system that includes a cooler and a heater in the same air path, and a controller that controls the cooling capacity of the cooler and the heating capacity of the heater. In the conditioner, the controller includes an adjusting means that adjusts the cooling capacity according to the difference between the target dew point temperature and the measured dew point temperature, and adjusts the heating capacity according to the difference between the set temperature and the measured temperature. It was established.

(E) Function In this air conditioner, the adjustment means of the controller adjusts the cooling capacity according to the difference between the target dew point temperature and the measured dew point temperature, and also adjusts the cooling capacity according to the difference between the set temperature and the measured temperature. Adjust ability.

(f) Example This invention will be explained based on the drawings. FIG. 1 is a schematic configuration diagram of an air conditioner showing a first embodiment. In this figure, (1) is an indoor unit of the air conditioner, and (2) is an outdoor unit. (3X4) is a refrigerant pipe connecting both units (1) and (2), and (5) and (6) are hot water pipes. <
7) and (8) are a cooler and a heater, 9) is a blower, and <10) is a hot water flow rate control valve.

(11) is a heat source device that is installed in the outdoor unit (2) and supplies hot water at a predetermined temperature; (12) is a compressor (13);
an inverter device for controlling the operating frequency of (14
) is a blower that blows air to the heat exchanger (31), (15) is a controller [adjustment means] for adjusting the cooling capacity and heating capacity of the cooler (7) and the heater (8), (16) is a temperature sensor for detecting room temperature, and (17> is a humidity sensor for detecting relative humidity).

The controller (15) is composed of, for example, a one-chip microcomputer, and stores an input device (18), a program, and data indicating the relationship between temperature and saturated humidity used to determine the dew point temperature for the humidity. A read-only storage device (19) that performs calculations, a central processing unit (20) that performs calculations, a storage device (21) that stores input data such as room temperature and relative humidity, and an output device (22). [See Figure 2]. Also, (30) is this controller (
15) is a setting device for inputting set relative humidity and set temperature.

In the air conditioner configured as described above, during operation, the air cooled by the cooler (7) is heated by the heater (8) to remove humidity in the air and adjust the temperature. The cooling capacity and heating capacity are determined as follows.

First of all, the controller (15) sets the set relative humidity [R5],
Read the set temperature (Ts), current relative humidity [R1], and current room temperature (T,), calculate the target dew point temperature (Tds) for the target relative humidity from Rs and Ts, and calculate the measured dew point from R,,T,. Calculate the temperature (Td, ).

Next, (Td, -Tds) and d(TcL Tds )/dt are calculated from TcL and Tds. At this time, the relationship between the required dehumidification capacity and dehumidification load is (Td,
-Tds) and d(Td, -Tds)/dt.

The central processing unit (20) of the controller (15) then f(
(Td, -Tds), d (Td, -Tds)/dt)
Calculate. This calculation result corresponds to the cooling (dehumidifying) capacity of the cooler 7). In addition, the number f during this time is (Td, -Td
It is a function that takes a value indicating that when both s) and d (T d l - T ds )/dt are negative, no cooling capacity is required, and when both of the above values are positive, a strong cooling capacity is required. and,
During this time, depending on the calculation result of the number f, the compressor (13)
The operating frequency of the cooler (7) is increased or decreased, and the cooling capacity of the cooler (7) is increased or decreased.

In addition, the central processing unit (20) of the controller (15) has g(
(T+Ts), d(T+-T!3)/dt). At this time, the relationship between the required reheating capacity and the reheating capacity can be known from (T, -Ts) and d (T, -Ts) /dt.

Then, the central processing unit (20) of the controller (15) g(
(T+ Ts), d (T+ Ts)/dt). This calculation result corresponds to the heating capacity of the heater (8). During this time, the opening degree of the flow control valve (10) is increased or decreased depending on the calculation result of several g, and the heating capacity of the heater (8) is increased or decreased.

In this way, the controller (15) adjusts the cooling capacity of the cooler (7) and the heating capacity of the heater (8), making it possible to efficiently control humidity and temperature.

FIG. 5 shows a second embodiment, in which the same or equivalent parts as in the first embodiment are denoted by the same figure numbers. The controller (15) in this embodiment has a function f.

The opening degree of the refrigerant control valve (25), the operating frequency of the compressor (13), and the rotational speed of the blower (31) are increased or decreased depending on the calculation result of g, thereby controlling the cooling capacity of the cooler (7) and the heater. (
8) Adjust the heating capacity.

(G) As described in detail, according to the present invention, the adjusting means of the controller adjusts the cooling capacity according to the difference between the target dew point temperature and the measured dew point temperature, and also adjusts the cooling capacity according to the difference between the set temperature and the measured dew point temperature. Since the heating capacity is adjusted according to the difference in temperature, humidity and temperature can be adjusted efficiently, and energy waste can be minimized.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of an air conditioner showing a first embodiment of the present invention, FIG. 2 is a block diagram showing a control device of the air conditioner, and FIG. 3 is a flow chart showing the operation of the control device. FIG. 4 is a diagram showing the relationship between room temperature and absolute humidity, and FIG. 5 is a schematic configuration diagram of an air conditioner showing a second embodiment of the present invention. (7)...Cooler, (8)...Heater, (15
)...controller [adjustment means]. ■ 1!31!1 ds T+a s Office Manager]

Claims (1)

[Claims] (1) In an air conditioner that has a cooler and a heater in the same air path and is equipped with a controller that controls the cooling capacity of the cooler and the heating capacity of the heater, the controller has a target Adjusts the cooling capacity according to the difference between the dew point temperature and the measured dew point temperature,
An air conditioner further comprising an adjusting means for adjusting the heating capacity according to the difference between the set temperature and the measured temperature.