JPS60159546A - Heat pump type air conditioner - Google Patents

Abstract

PURPOSE:To heat a room efficiently immediately after the starting of operation of the air conditioner by a method wherein room temperature and the blow-off air temperature of the air conditioner are detected to operate a rotating number controlable fan motor in conjunction with an airflow direction changing plate, whose position is changed by a small motor, and control the blow-off angle, ventilating air amount and blow-off speed of the air conditioner. CONSTITUTION:An air conditioner is provided with a sensor 10, detecting the temperature Td of blow-off airflow c, the small motor 11, controlling the angle R of the air direction changing plate 12 and the height Dh of a blow-off port, and a control circuit 13, connected with a room temperature sensor 7, the blow-off air temperature sensor 10, the small motor 11, the rotating number controlable fan motor 14 and the like and controlling them cooperatingly. Upon the starting of operation, the blow-off angle theta is enlarged and blow-off speed V is decreased to increase the blow-off temperature Td immediately and when the blow-off temperature Td has become high, the height Dh of the blow-off port is decreased to increase the blow-off speed V. Subsequently, the blow- off angle theta is decreased and when a room temperature Ti is increased further, ventilation is controlled by increasing the airflow amount M as well as the height Dh of the blow-off port and the like.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a heat pump type air conditioner, and particularly relates to an air blow control method suitable for improving the comfort of a wall-mounted air conditioner immediately after starting heating operation. be.

[Background of the invention]

A conventional heat pump type air conditioner will be explained with reference to FIGS. 1 and 2. , 1 is the base of the air conditioner, 2 is the heat exchanger, 6 is the fan casing that also serves as a dew treatment, 4 is the blower fan, 5 is the fan motor whose output can be switched in several stages, and 6 is the top for blowing air. 7 is a sensor that is built into the controller 8 and detects the room temperature Ti, and 9 is a control circuit that controls operation (JN, OFF, output switching of the motor 5, etc.). The angle adjustment of the plate 6 is mainly manual, and even if it is automated, it is controlled in two directions: up and down.Moreover, the blowing angle β when facing downward is generally set at about 60° to ensure good temperature distribution throughout the room when the air volume is large. Since the design was designed around 30°C, it took a long time for the living area to become comfortable because the amount of heat was diffused, and the discomfort was increased especially immediately after the start of operation because the air flow did not reach a high temperature.Furthermore, as shown in Figure 2 As shown in Figure 2, in the unsteady state after the start of operation, the rate of increase in the wall temperature Tw is slow, and the temperature increases due to the effects of radiation. I understand.

In this way, conventional heat pump air conditioners control the blower, wind direction, etc. independently, and are mainly operated manually.
It was impossible to create a comfort zone until the entire room was warmed up.

[Purpose of the invention]

The present invention aims to improve the above-mentioned drawbacks. In other words, a fan motor that can control the rotation speed by sensing the room temperature and the temperature of the air being blown out, and a small motor that works in conjunction with a wind direction plate that changes its position to control the blowing angle and air volume.

The aim is to control the blowing speed and create a comfortable zone in the living space immediately after the start of operation.

[Summary of the invention]

The heating capacity of a heat pump type air conditioner decreases as the outside temperature decreases. Conventionally, the heating capacity of a heat pump type air conditioner decreases as the outside temperature decreases. Conventionally, it attempts to warm the entire room, so it takes a long time from the start of operation until the room is warmed up. Due to the unusual airflow, the temperature felt lower and the discomfort was increasing. So, temperature/? −
, The fan motor and wind direction plate are controlled in conjunction to heat the lower part of the air conditioner with high-temperature air and small air volume immediately after the start of operation, and as the room temperature rises, the air volume increases and changes upward to gradually increase the comfort zone. I devised something.

FIG. 6 shows a comparison of characteristics after a certain period of time when the same air conditioner is used under different blowing conditions. The horizontal axis is the blowing angle θ, and the vertical axis is the average room temperature Tl and the suction air temperature Ts. From this figure, it can be estimated that the room temperature T i is almost constant regardless of the air blowing conditions and is affected by the capacity, and the suction air temperature Ts changes when the blowing speed ■ is small and the blowing angle θ is large or small. It can be seen that immediately returns to the suction side and rises. In other words, in order to locally raise the temperature below the harmonizer, it is sufficient to select an air blowing specification that increases the suction temperature.

Therefore, at the beginning of operation, the blowing angle θ is made large and the blowing speed V is made small so that the suction temperature Ts rises in a short period of time (i.e.,
If the blowing air temperature becomes high (the temperature of the blowing air becomes high), by increasing the blowing speed V, a high temperature area can be formed locally on the floor surface, and as the room temperature Ti rises, a state where the room temperature Ti and the suction temperature '1' s are closest to each other. (In other words, if the air blowing control is performed sequentially so that the temperature distribution throughout the room becomes favorable), it is possible to imagine that a comfortable zone can be created immediately after the start of operation.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to FIG. The same reference numerals as in the conventional example indicate the same parts. 10 is a sensor that detects the temperature Td of the blowing air flow C; 11 is the angle of the wind direction plate 12;
A small motor that controls the air outlet height Dh, 16 is a room temperature sensor 7, an air outlet temperature sensor 10, and a small motor 1
1. A control circuit that connects the rotation speed control fan motor 14, etc. and performs interlock control.

By adopting such a structure, at the start of operation, the blowing angle θ is large to about 80°, and the blowing speed V is set to about 3-n1.
When the blowing temperature Td reaches a high temperature of about 60° C., the blowing outlet height Dh is reduced and the blowing speed V is set to about 4 rrV/S. Then, the blowout angle θ is reduced to approximately 70 degrees, and the air flow rate M is increased when the room temperature Ti rises, and the blowout outlet height 1) h is increased, etc. in detail. This makes it possible to control the air flow, ensuring a comfortable space at all times from the start of operation.

〔Effect of the invention〕

FIG. 5 shows a comparison of the warming return performance when the air blowing control according to the present invention is performed and when the constant air volume and constant blowing specifications are used. The horizontal axis is the operating time, and the vertical axis is the ventilation conditions and temperatures Ti, Td,
Comfort area Pv is shown. Figure 6 shows each operating time A and B in Figure 5.
, C, and D, 15 is a vertical section at the center of the room, 16 is the conditioner Kimoto, and 17 is the trajectory of the main flow of the outlet airflow.

In the air blow control operation, at the beginning of operation, the air volume M is small, so the blowing temperature Td is high, and the blowing outlet height Dh is large, so the blowing speed V is small, and the blowing angle θ is also large, so the blowing airflow returns to the suction side. The blowout temperature Td becomes even higher in a short time. At this point, if the height Dh of the air outlet is reduced, the airflow speed V becomes high, allowing the hot air to reach the floor, and even if the room temperature Ti has not yet risen, it is possible to create a high temperature area downward in the conditioner 16. can. Next, the blowout angle θ is slightly decreased to expand the high temperature region, and when the room temperature T i rises further, the wind iM
is increased, the air outlet height Dh is increased, the air outlet speed V is kept constant, and the air outlet angle θ is set so that the temperature distribution throughout the room is good, and the entire room becomes comfortable.

On the other hand, in the conventional fixed air blowing operation, since the entire room is heated from the beginning of operation, the amount of heat is diffused to the S room, and it is not possible to locally form a high temperature area in a short time.

In this way, the room temperature Ti and the blowout temperature Td are sensed, and the wind i1
By fully controlling M, angle θ, and speed V of the airflow C, a high temperature region can be created locally from the beginning of operation, and efficient and comfortable heating can be obtained.

[Brief explanation of the drawing]

Figure 1 is a structural diagram of a conventional heat pump type air conditioner, Figure 2 is a diagram of changes in comfort level at the start of operation, Figure 6 is a diagram of the relationship between ventilation conditions and suction temperature, and Figure 4 is the structure of the present invention. Figures 5 and 6 are heating performance comparison diagrams at the start of operation. 7.10...Temperature sensing sensor, 11...Small motor, 12...Wind direction plate, 16...Control circuit, 12.
...Wind direction plate angle, Dh...Outlet height, θ...Blowout airflow angle, a, b, c...Airflow, Ti...Room temperature, T
S... Suction temperature, Td... Outlet temperature, Tw... Wall temperature, M... Air volume, ■... Outlet speed, Pv... Comfort area. Half 1 (2) $, Figure 3 Stump angle repulsion T = Figure 5 Closed when reversed 1 Figure $6

Claims (1)

[Claims] It has sensors (7) and (10) that detect room temperature (Ti) and blown air temperature (Td), and has an angle (1) of the wind direction plate (12).
: L), air outlet height Dh), a wind direction plate (12) connected to a drive device that can control the air outlet height Dh), a fan motor (5) whose output can be changed, a drive device for the wind direction plate (12), and a sensor ( 7). (10) has a control circuit (16) that controls the fan motor (5), and the control circuit (16) reduces the air volume (M) at the beginning of operation and adjusts the blowing angle (θ) almost vertically. Then, the outlet height (Dh) is increased, and then when the outlet temperature (Td) reaches a high level, the outlet height (nh) is lowered, and then, after the room temperature (T1) rises, the outlet angle ( θ)
If the room temperature (Ti) rises above this level, use a heat bong type air conditioner.