JPH03207937A - Air-conditioner - Google Patents

Abstract

PURPOSE:To make the distribution of an indoor temperature more uniform both in cooling and in heating by providing a ventilation duct switching mechanism which can allow an indoor-side outlet to position on the upper side of a room in cooling, and on the lower side of the room in heating. CONSTITUTION:Indoor air is sucked in from a vent hole in the central part, cooled down by an evaporator 5 and then let out from a vent hole in the upper part. Meanwhile, an outdoor air is sucked in also from the vent hole in the central part, warmed by a condenser 7 and then let out from a vent hole in the lower part. A control is made, on the occasion, so that the quantity of airflow of a blower for the evaporator be small and that of airflow of a blower for the condenser be large. When a ventilation duct partition plate 6 is rotated, a slide partition plate 2 is pushed or pulled through the intermediary of a connection rod 3 and thereby switching is made over to a heating state. In this state, the indoor air is sucked in from the vent hole in the central part, warmed by the condenser 7 and let out from the vent hole in the lower part. Meanwhile, the outdoor air is sucked in from the vent hole in the central part, cooled down by the evaporator 5 and then let out from the vent hole in the upper part.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a duct mechanism for an air conditioner that performs air conditioning and heating using an integrated air conditioner that uses a refrigeration cycle exclusively for cooling.
This invention relates to a method for switching between an indoor ventilation duct, an outdoor ventilation duct, and an indoor air outlet.

[Conventional technology]

Conventional technology requires a method of switching the ventilation path of the duct in a ceiling-embedded duct type air conditioner, or a method of switching the ventilation path of the duct in a ceiling-embedded duct type air conditioner, or
There was a method, as disclosed in Japanese Patent Application Laid-Open No. 60-122839, in which the indoor heat exchanger and the outdoor heat exchanger were replaced by rotating the main body, thereby making it possible to perform cooling and heating even with a cooling-only refrigeration cycle.

[Problem to be solved by the invention]

The purpose of the above conventional technology is to perform air conditioning and heating using a simple cooling-only refrigeration cycle, and the indoor air outlet is not divided into cooling and heating, and the indoor temperature distribution during either cooling or heating. The problem was that it was bad.

An object of the present invention is to provide an air conditioner that can make the indoor temperature distribution more uniform in both cooling and heating using a simple ventilation path switching mechanism.

[Means to solve the problem]

In order to achieve the above objectives, in an air conditioning system consisting of an integrated air conditioner and duct system that uses a cooling-only refrigeration cycle, ■ it is possible to switch between indoor ventilation ducts and outdoor ventilation ducts during cooling and heating; ■ It has a ventilation path switching mechanism that allows the indoor air outlet to be placed above the room when cooling, and below the room when heating.■ Two blowers for the outdoor heat exchanger and indoor heat exchanger have variable speed, Alternatively, an electric motor with multiple taps is used to control the air volume.

[Effect]

In the cooling-only refrigeration cycle, during normal operation, that is,
During cooling, outdoor air passes through a condenser and indoor air passes through an evaporator. The heat bomb cycle is a mechanism that performs heating by switching the functions of the evaporator and condenser by switching the four-way valve, but in the present invention, the functions of the evaporator and condenser remain the same, and the ventilation path is used instead of the four-way valve. By switching the , outdoor air passes through the evaporator,
Heating is also possible by passing indoor air through a condenser. This simplifies the structure of the cycle.

It also controls the air volume of the two heat exchanger blowers in response to switching between air conditioning and heating. That is, during cooling, the air volume of the condenser fan, ie, the outdoor side, is increased, and the evaporator fan, ie, the air volume of the indoor side, is decreased. During heating, reduce the air volume of the condenser fan and increase the air volume of the evaporator fan to maintain an appropriate balance between cooling and heating cycles.

Furthermore, during cooling, indoor air is sucked in from below and blown out from above, and during heating, indoor air is sucked in from above and blown out from below, so that the cold air, which is heavy and tends to fall downward during cooling, rises lightly upward during heating. It is possible to more evenly distribute warm air indoors.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 4.

1 and 2 show an example in which the present invention is applied to a wall-embedded air conditioner, and FIG. 1 shows the air conditioner in a cooling state.

1 is a wall, and three ventilation holes are provided in each of the indoor and outdoor walls. Indoor air is sucked in through the central ventilation opening, cooled by the evaporator 5, and then blown out through the upper ventilation opening. On the other hand, outdoor air is also sucked in through the central ventilation passage, heated by the condenser 7, and then blown out through the lower ventilation opening. At this time, the air volume of the evaporator fan is controlled to be small, and the air volume of the condenser fan is controlled to be large.

Next, when the ventilation passage partition plate 6 is rotated, the connecting rod 3
Slide partition plates 2 (four in total) are pushed through the
Or, it is pulled, as shown in Figure 2, and switches to the heating state. In this state. Indoor air is sucked in through the central ventilation opening, heated by the condenser 7, and blown out through the lower ventilation opening.

On the other hand, outdoor air is sucked in through the central ventilation opening, cooled by the evaporator 5, and then blown out through the upper ventilation opening.

At this time, the air volume of the evaporator fan 4 is controlled to be large, and the air volume of the condenser fan 8 is controlled to be small.

FIGS. 3 and 4 show examples in which the present invention is applied to a duct type air conditioner, and FIG. 3 shows a cooling state.

10 in the figure is a ventilation duct, and the duct is installed so that the indoor suction port is located at the bottom of the room and the air outlet is located at the top of the room. As a result, indoor air sucked in from the lower part of the room is cooled by the evaporator 5 and blown out from the upper part of the room.

Further, reference numeral 9 denotes a ventilation path switching valve attached to the ventilation duct, and by switching this as shown in FIG. 4, the heating state is achieved. In this state, indoor air is sucked in through the air outlet during cooling, heated by the condenser 7, and then blown out through the air inlet during cooling, that is, the ventilation opening at the bottom of the room. In these cooling and heating states, the air volume of the blowers 4 and 8 is controlled in the same manner as described in FIGS. 1 and 2.

With the ventilation path switching mechanism of the present invention as described above, heating and cooling can be performed even with a cooling-only refrigeration cycle, and when cooling, it is possible to perform heating and cooling from the top of the room, and when heating, it is from the bottom of the room. cold,
Air conditioning that blows out warm air becomes possible.

〔Effect of the invention〕

According to the present invention, heating and cooling can be performed using a refrigeration cycle dedicated to cooling, and complex cycle parts such as four-way valves and check valves, which are required in heat pump machines, are not required, making it less likely to break down and making cycle design easier. becomes.

In addition, since cold air is blown from the top of the room during cooling, and warm air is blown from the bottom of the room during heating, the indoor temperature distribution can be made more uniform and comfortable air conditioning can be achieved.

[Brief explanation of drawings]

Figures 1 and 2 are cross-sectional views of a wall-embedded air conditioner according to an embodiment of the present invention, and Figures 3 and 4 are system diagrams of an example in which the present invention is applied to a duct-integrated air conditioner. It is an explanatory diagram. 1... Wall, 2... Sliding partition plate, 3... Connecting rond, 4... Evaporator blower, 5... Evaporator, 6...
- Ventilation path switching board, 7... Condenser, 8... Condenser blower, 9... Ventilation path switching valve, 10... Ventilation duct. Right figure 1 (Rei A time) Tail figure 2 (Mezaka Fusada〒ノ

Claims (1)

[Scope of Claims] 1. In an air conditioning system consisting of an integrated air conditioner and duct system using a refrigeration cycle dedicated to cooling, an indoor ventilation passage and an outdoor ventilation passage are connected by links, slide plates,
Alternatively, a mechanism is provided that can be switched using a rotary ventilation valve, and a ventilation passage is installed so that the indoor air outlet is located below the room during heating and above the room during cooling. Air conditioner.