JPS62261848A - Control circuit for wall penetrating type air-conditioning machine - Google Patents

Abstract

PURPOSE:To prevent the delay of rise time especially of room heating operation including the time of room cooling and sane energy by a method wherein the contact of a delay relay is provided between the ON side of an operation switch and the closed circuit side of a limit switch connected to the side of an electric source through a damper motor. CONSTITUTION:When an operation switch 21 is thrown into the side of ON, a compressor relay 32 is conducted through a thermostat 22, the contact 32a of the compressor relay 32 is closed, a compressor 31 is connected between the terminal A and the terminal B of an electric source and room cooling or room heating is started. Simultaneously, a delay relay 23 is excited and the contact 23a of the delay relay 23 is closed after a time during which a room temperature approaches to a set temperature after starting room heating operation and then arrives at the room temperature of rise has elapsed. According to this operation, a damper motor 30 is conducted through the closed circuit (a)-(b) of a limit switch 24 and a ventilation damper is opened, while the circuit of the limit switch 24 is switched from the closed circuit (a)-(b) into an open circuit (a)-(c) to keep the open condition of the damper whereby ventilation may be effected while effecting room cooling or heating operation.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a control circuit for a through-wall air conditioner that is used for air conditioning in buildings and performs cooling and heating operations while introducing outside air.

2. Description of the Related Art Conventionally, a control circuit for this type of wall-penetrating air conditioner is as shown in FIG. In other words, the operation switch 2 connected to the A side of the power supply 1, and the operation switch 2
It is connected from the ON side (dotted line) to the thermostat 3, the limit switch 6 via the contact 4at of the auxiliary relay 4, and the outdoor blower 7 and the indoor blower 8 via the B contact 6a of the auxiliary relay 6. The OFF side (solid line) of the operation switch 2 is connected to the damper motor 9 via the open circuit a-c of the limit switch 6. 1o is a compressor, one end is on the power supply A side and the other end is the contact 11 of the compressor relay 11
It is connected to the power supply B side via a.

The thermostat 3 has two stages of contacts 3a.

3b, the timer motor 13 of the defrost timer 12 is connected in parallel to the compressor relay 11 through the contact 3c of the thermostat 3, and the four-way valve coil 14 is connected in parallel through the contact 12a.
3 and the other end of the four-way valve coil 14 are connected to the power source B side.

Conventionally, the control circuit is configured in this way, and the operation switch 2
When set to iON, the compressor relay 11 is energized via the contacts 3M and 3b of the thermostat 3, and the other end of the compressor relay 11 is excited by the energization from the power source B. Due to this excitation of the compressor relay 11, the contact 11a is closed and the compressor 1
0 is operated and cooling or heating operation starts. At the same time as the contact 11a is closed, the auxiliary relay 4 is energized and the contact 4a is closed, and as a result, the damper motor 9 is energized by energizing the contact 4a and the limit switch 6 a-5 from the ON side of the operation switch 2. , a ventilation damper (not shown) built into the main body of the air conditioner is activated and opened, and the limit switch 6 is opened from the closed circuit a-b.
Switches between open circuit a and a (dotted line). Then, outside air was brought in and ventilated while heating and cooling operations were performed.

Also, when the operation switch 2 is turned OFF, the lead wire 18
The damper motor 9 is energized through circuits a and a of the limit switch 6, and this energization operates the damper from open to close, and the limit switch 6 is switched again to the closed circuit a to 5. At the same time as the operation was stopped, the damper was also closed and the intake of outside air was stopped.

Problems to be Solved by the Invention In such a conventional configuration, as described above, the operation switch 2 is turned on to excite the compressor relay 11, and the contact 11 is turned on.
While the compressor 10 is operated via the AI, the limit switch 5 is also switched to the open circuit a - 0 to open the damper and perform cooling and heating operation while taking in outside air. Turn on switch 2
When this is done, contact 4a of auxiliary relay 4 is also closed via contact 11ai of compressor relay 11, so limit switch 6
The damper motor 9 is energized through a-b, and at the same time as the heating and cooling operation starts, the limit switch 6 is activated through a-b.
Since ventilation is performed at the same time as the start of operation, the damper of the ventilation opening is opened, outside air is brought in, and indoor air is exhausted, the rise to the indoor temperature is slow and unnecessary ventilation is performed. There was a problem of doing it.

The present invention is intended to solve these problems, and aims to prevent delays in the start-up time of heating operation, including during cooling, to save energy, and to achieve economical operation.

Means for Solving the Problem In order to solve this problem, the present invention provides an operation switch connected to the power supply side, a compressor relay connected from the ON side of the operation switch via a thermostat, and a compressor relay connected to the ON side of the operation switch. A compressor connected through a contact that is opened and closed by a relay, a delay relay connected to a power supply side in parallel with the compressor through the contact, and a delay relay connected to the power supply side through the ON side of the operation switch and a Danbo motor. The contact point of the delay relay is provided between the closed circuit side of the limit switch.

Function: With this configuration, the compressor relay is energized from the operation switch via the thermostat, and by energizing the compressor relay, the contacts of the compressor relay are closed, the compressor is operated, and heating and cooling operation is performed. When the contact of the compressor relay is closed and the delay relay is energized, the contact of the delay relay is closed for a predetermined time, that is, the time when the air conditioning starts up in the cooling/heating operation, and the relay is closed, and the relay is energized through the closed circuit of the limit switch. energizes the damper motor, the damper operates to open, the limit switch switches from a closed circuit to an open circuit, the damper stops in the open state, and ventilation is performed.

EXAMPLE An example of the present invention will be described below with reference to FIG. The operation switch 21 connected to the A side of the power supply 20, the thermostat 22 from the ON side (dotted line) of this operation switch 21, the limit switch 24 via the contact 23a of the delay relay 23, and the B contact 25al of the auxiliary relay 26. It is connected to an outdoor blower 26 and an indoor blower 27, respectively. The OFF side (solid line) of the operation switch 21 is connected to the damper motor 3o via a lead wire 28 and an open circuit a-0 of the limit switch 24. 31 is a compressor, one end is connected to the A side of the power source 2°, and the other end is connected to the B side of the power source 20 via the contact 32a of the compressor relay 32.
Connected to the side. The thermostat 22 has two stages of contacts 22a.

22b and is connected to the compressor relay 32 via a lead wire 33, while the contact 22 of the thermostat 22
From c, the tie motor 36 of the defrost timer 34 and the four-way valve coil 36 are connected in parallel via the contact 35a. And compressor relay 32, four-way valve coil 3
6, auxiliary relay 26, damper motor 301 indoor blower 27, outdoor blower 26, compressor 3 via contact 32a
The other end of each of the first class is connected to the power supply 20 via a lead wire 37.
It is connected to the B side of the

In the above configuration, the operation switch 21 is turned to the ON side (dotted line)
When it is, the contact 22a of the thermostat 22.

The compressor relay 32 is energized via the compressor relay 22b, the contact 32a of the compressor relay 32 is closed, the compressor 31 is energized between A and B of the power source 2o, and is operated to start cooling or heating. At the same time as the contact 32a closes, the delay relay 23 also connects the A of the power supply 2o via the contact 32ai.
-B is energized, and the delay relay 23 is energized. Then, the delay relay 23 is activated for a predetermined period of time, for example, if it is 30 minutes from the start of the cooling/heating operation until the room temperature approaches the set temperature and reaches the rising room temperature, the contact 23 is activated after the 30 minutes have passed. Closed. and the contact 23
When a is closed, the damper motor 3o is energized through the closed circuit a-b of the limit switch 24. As a result, a ventilation damper (not shown) built into the main body of the wall-penetrating air conditioner is activated and opened, causing the limit switch 24 to change from the closed circuit a-b to the open circuit a-b.
The damper is maintained in the open state by switching to the period a, and ventilation is performed while performing cooling/heating operation.

During this cooling/heating operation, when the indoor temperature reaches the desired temperature, the contact 22a of the thermostat 22 is activated.
Alternatively, 22b is reversed, and this reversal disconnects the compressor relay 32, opening its contact 32a and stopping the compressor 31 as well. Since the delay relay 23 is also turned off at the same time that the contact 32a is opened, the contact 23& is opened. When the operation switch 21 is turned to the OFF side, the compressor 31 stops and the damper motor 30 is energized from the open circuits a to c of the limit switch 24 via the lead wire 28, thereby operating the damper motor 30 and turning the damper off. Open circuit a of limit switch 24 while closing
From 0 to 0, the closed circuit a-b is reversed and stopped, and ventilation is stopped.

Effects of the Invention As is clear from the description of the above-mentioned embodiments, the present invention delays ventilation from the start of cooling/heating operation, thereby suppressing an increase in heating load due to ventilation during morning start-up operation during cooling and heating. This makes it possible to quickly raise the indoor temperature of the living room to a predetermined temperature. This has great effects in saving energy and reducing running costs, as well as improving comfort.

[Brief explanation of drawings]

FIG. 1 is a control circuit diagram of a wall penetrating air conditioner according to an embodiment of the present invention, and FIG. 2 is a control circuit diagram of a conventional wall penetrating air conditioner. 2o...Power supply, 21...Operation switch, 22...Thermostat, 23...
Delay relay, 23a...Delay relay contact, 2
4... Limit switch, 3o... Damper motor, 31... Compressor, 32...
...Compressor relay. Name of agent: Patent Attorney Toshio Tsuchio and 1 other person 20-
21-11 φ de middle t sui, 7 te 23 Shin... No Mystery 24--Somi, Tomata) Nna 3ω--Dan''nhe °-Ki-ta 3/---/E Piece 1p (32-,, I-roe 32o--・I-ri a-eye"-Simachi. Figure 2

Claims (1)

[Claims] The operation switch connected to the power supply and the O of this operation switch
a compressor relay connected from the N side via a thermostat; a compressor connected via a contact that is opened and closed by the compressor relay; a delay relay connected to the power source side in parallel with the compressor via the contact; A control circuit for a penetrating air conditioner, in which a contact point of the delay relay is connected between an ON side of an operation switch and a closed circuit side of a limit switch connected to a power supply side via a damper motor.