JPS631138Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Industrial Field of Application) The present invention relates to a window-type air conditioner having a partition plate that can open and close a communication path that communicates indoors and outdoors.

(Prior Art) A method of controlling operation when performing cooling operation and simple dry operation using a window type air conditioner will be explained with reference to FIGS. 1 and 2. FIG. 1 is a diagram showing an outline during cooling operation. The outdoor blower 1 takes in air at an outside temperature from outside the room and blows it outside through the condenser 2 again. On the other hand, the indoor blower 3 circulates indoor air via the evaporator 4. At this time, the partition plate 5, which can be opened and closed to allow communication between the outdoor air duct and the indoor air duct, is in a closed state. In this way, the flows of outside air A and inside air B exist only in the outdoor air duct and the indoor tank air duct, respectively, as indicated by the arrows in the figure, and do not intersect with each other.

FIG. 2 is a diagram when the window type air conditioner is used for simple dry operation. In this case, in order to remove indoor humidity without lowering the room temperature by introducing a portion of outside air A into the indoor air duct, the partition plate 5 is opened to partially connect the outdoor air duct and the indoor air duct. .

(Problem to be solved by the invention) In this way, in order to switch between cooling operation and simple dry operation, the window type air conditioner communicates the outdoor air duct with the indoor air duct, and uses the communicating passage. It is designed to switch between a closed state and an open state. In window type air conditioners, moisture removed from indoor air during cooling operation or dry operation is often discharged and accumulated in the vicinity of the outdoor air passage in the form of water droplets. Therefore, when the outdoor air duct and the indoor air duct are in communication with each other through the above-mentioned passage, when air flows into the room from the outdoors, the air is removed from the water droplets accumulated near the outdoor air duct. Wind-type air conditioners often experience a phenomenon called moisture return, in which they contain a large amount of moisture and carry that moisture into the room.

An object of the present invention is to focus on the above-mentioned moisture return, which is a particular problem in window-type air conditioners, and to provide a window-type air conditioner that can prevent such moisture return.

[Structure of the idea]

(Means for Solving the Problems) The window air conditioner of the present invention includes a refrigeration circuit having a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a partition plate that opens and closes a communication path that communicates indoor and outdoor areas. , comprising a room temperature sensor that detects room temperature, a memory that stores a predetermined set temperature, and a comparison circuit that compares an output from the room temperature sensor and the set temperature in the memory, and an output from the comparison circuit. In a window type air conditioner that opens and closes the partition plate and switches between cooling operation, dry operation, and operation stop based on the above, when the room temperature drops by a predetermined value from the set temperature during the dry operation, the compressor is stopped and the The partition plate is configured to include a control means for switching the partition plate to a closed state.

(Function) During dry operation, when the room temperature detected by the room temperature sensor drops by a predetermined value from the preset temperature stored in the memory, the compressor is stopped based on the output from the comparison circuit.
At the same time, the control means operates based on the output from the comparator circuit to stop the compressor, thereby causing the partition plate to close. By closing the partition plate, the interior and exterior are cut off, and even when the compressor is stopped, so-called moisture return, in which moisture flows into the interior from the exterior, does not occur.

(Example) Hereinafter, embodiments of the present invention will be described in detail.

First, if the room temperature is higher than the set temperature Ts, cooling operation is performed. In that case, divider plate 5
is closed.

Furthermore, when the room temperature falls below the set temperature Ts, a simple dry operation is performed by introducing a portion of outside air and raising the blowing temperature by the amount of outside air compared to during cooling. Therefore, in this case, the partition plate 5 is opened.

Furthermore, when the room temperature drops by α below the set temperature Ts, the operation of the air conditioner is stopped to prevent it from getting too cold and to prevent moisture from returning. When the air conditioner stops operating, the compressor of the refrigeration circuit (not shown), the outdoor blower 1, and the indoor blower 3 are stopped, and the partition plate 5 is closed.

In this manner, when the room temperature drops by α further than the set temperature during simple dry operation, the partition plate 5 is closed together with the operation of the air conditioner being stopped.
This reliably prevents moisture from returning, which is a particular difficulty in window air conditioners. That is,
Generally, in a window air conditioner, when a cooling operation or a simple dry operation is performed, indoor air is cooled by the evaporator 4, and moisture in the indoor air is removed as water droplets. The water droplets are discharged outside. Therefore, when outdoor air flows into the room, the incoming air contains moisture from the discharged water droplets, and it is inevitable that the moisture will flow back into the room. When the air conditioner is operating, that is, during simple dry operation, even if outdoor moisture flows into the room, there is no practical problem because the evaporator 4 dehumidifies the indoor air. . However, when the air conditioner is stopped, the evaporator 4 does not dehumidify, so the inflow of moisture from the outdoors into the room cannot be ignored, causing a problem unique to window-type air conditioners called moisture return. Thus, when stopping a simple dry operation, not only the operation of the air conditioner is stopped, but also the partition plate 5 is closed, so that the above-mentioned return of moisture can be reliably prevented.

FIG. 3 is a diagram showing the operation pattern of the air conditioner. Dotted arrows in the figure indicate changes in the operating status of the air conditioner. The air conditioner operates at the set temperature Ts mentioned above depending on whether the air conditioner goes from cooling to simple dry operation and then stops, or from a stopped state to simple dry operation and then to cooling operation.
It is preferable to maintain a difference between the temperature and the temperature α.

By operating the air conditioner according to the operating pattern shown in FIG. 3, the air conditioner is rapidly cooled until the set temperature Ts is reached, and then the partition plate 5 is opened to switch to simple dry operation, thereby achieving an energy saving effect. In addition, by providing the simple dry operation range to the area that is further lower than the set temperature Ts by α, the operable range is expanded when the outside air is low, such as during the rainy season.

FIGS. 4 and 5 show an example of a control circuit for automatically opening and closing the partition plate 5 based on the room temperature and the set temperature Ts. The room temperature is detected by a room temperature sensor 6 and input to a comparison circuit 7 .
On the other hand, the set temperature Ts of the room temperature is inputted from an input circuit 8 and stored in an arithmetic circuit (hereinafter referred to as "CPU") 9 having a memory. The comparison circuit 7 compares the difference between the set temperature Ts stored in the CPU 9 and the room temperature detected by the room temperature sensor 6, and the difference signal is inputted again to the CPU 9, and the difference signal is inputted to the CPU 9 to open/close the partition plate 5 as described above. A signal is sent from the CPU 9 to the relay output circuit 10. The relay output circuit 10 has relay contacts 10a, 10b, 10c, shown in FIG.
Open and close 10d. With this opening/closing, the outdoor blower motor 1a, the indoor blower motor 3a, the partition plate opening/closing motor 5a, and the compressor 11 connected to the respective contacts operate or stop. Then, as shown in the operation pattern shown in Figure 3, the operation pattern of the air conditioner is determined depending on where the room temperature is relative to the set temperature Ts and temperature α, and the partition plate is opened and closed according to the determined operation pattern. and operations to continue or stop the air conditioner are automatically performed. The operation of each part of the air conditioner according to this operating pattern may be stored in advance as a program in the CPU 5 shown in FIG.

(Effect of the invention) According to the window type air conditioner of the present invention, when the indoor temperature drops by a predetermined value from the preset temperature during simple dry operation, the operation of the air conditioner (compressor) is stopped and the operation of the air conditioner (compressor) is stopped. Since the partition plate is closed to isolate the interior and exterior, it is possible to reliably prevent moisture from returning to the interior from the outside air, which is unique to window-type air conditioners.

[Brief explanation of drawings]

Figure 1 is a diagram to explain the operation of a window air conditioner during cooling operation, Figure 2 is a diagram to explain the operation operation in simple dry operation, and Figure 3 is a diagram to explain the relationship between room temperature and operation pattern. The figures shown, FIGS. 4 and 5, are diagrams showing an example of a control circuit used in a window type air conditioner according to this invention. DESCRIPTION OF SYMBOLS 1... Outdoor blower, 3... Indoor partition plate, 5... Partition plate, 6... Room temperature sensor, 7... Comparison circuit, 8... Input circuit, 9... CPU, 10... Relay output circuit, 10a,
10b, 10c, 10d...Relay contacts, 11...Compressor.

Claims (1)

[Scope of utility model registration request] A refrigeration circuit having a compressor, an indoor heat exchanger, an outdoor heat exchanger, a partition plate that opens and closes a communication path connecting the indoor and outdoor areas, a room temperature sensor that detects room temperature, and a memory that stores a predetermined temperature setting. and a comparison circuit that compares the output from the room temperature sensor and the set temperature in the memory, and opens and closes the partition plate based on the output from the comparison circuit, and performs cooling operation, dry operation, and operation stop. In the window type air conditioner, the window type air conditioner is characterized by comprising a control means for stopping the compressor and switching the partition plate to a closed state when the room temperature drops by a predetermined value from the set temperature during the dry operation. shaped air conditioner.