JPH0442653Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a window type or through-the-wall type air conditioning unit that has a connector for connecting a power source inside the unit body.

(b) Prior Art Japanese Utility Model Publication No. 47-40838 discloses a window type air conditioning unit in which a secondary connector for connecting a power cord is provided on the front surface of the unit body.

In this proposed device, the primary connector has a female type structure to prevent electric shock, so the male secondary connector is embedded in the front surface of the unit body.

(c) Problems to be solved by the invention When the female primary connector is pushed from the front to the rear and connected to the male secondary connector, the embedded secondary connector becomes invisible.
There was a problem in that it was difficult to align the primary connector with the secondary connector.

Additionally, since the secondary connector is provided on the front of the unit, this front cannot be removed from the unit, making it difficult to clean the air filter or inspect the internal equipment of the unit. It had a point.

The present invention provides an air conditioning unit that solves these problems.

(d) Means for solving the problem The present invention forms a through hole between the lower edge of the unit body and a decorative panel that closes the front opening of the unit body, and also allows the front plate to face the front opening. The corner of the electrical control box built into the unit body is recessed to form a power connection chamber facing the through hole, and the secondary connector that is connected to the primary connector in this power connection chamber is connected to the power connection chamber. The power cord is fixed to the side wall of the unit, and the power cord connected to the primary connector is led out of the unit body through the through hole.

(E) Effect When the decorative panel is removed from the unit body, the sideways secondary connector fixed to the side wall of the power connection chamber can be seen from the front, so when connecting the primary connector to the secondary connector, the primary Easily align connectors.

Then, the power supply connection work is completed by leading the power cord out of the unit main body through the through hole and closing the front opening of the main body with a decorative panel.

Note that cleaning the air filter and inspecting the evaporator, electric heater, fan, etc. can be easily done from the front opening by removing the decorative panel.

(F) Embodiment Figure 1 is a perspective view of an air conditioning unit showing a part of the internal structure.The rear half of the unit body 1 is embedded in the wall of a house, and the decorative panel 3 that closes the front opening 2 of this body is shown. The air conditioning unit consists of the following:

Reference numeral 4 denotes a partition plate that partitions the inside of the unit body 1 into an indoor chamber 5 on the inside and an outdoor chamber 6 on the rear side.
The upper stage 1.5KW is supported by a plate fin type evaporator 7, a cross flow fan 8 and a support plate 9.
Electric heater 10, middle 2KW electric heater 11,
A lower 1.5KW electric heater 12 is built in, and the outdoor chamber 6 includes a compressor 13, a plate fin condenser 14, a fan casing 15, and a propeller fan 16. Then, the indoor air is sucked in through the intake grill 17 of the decorative panel 3, passes through the air filter 18, the evaporator 7, and the electric heaters 10, 11, and 12 in order, and then is sent to the outlet grill 1 of the decorative panel 3 by the cross flow fan 8.
9 into the room, while outdoor air is sucked in from the grills 20 on both sides of the back, is blown onto the condenser 14 by the propeller fan 16, and is discharged outside from the central grill (not shown) on the back. Indoor air is cooled by the evaporator 7, and during heating, the indoor air is heated by electric heaters 10, 11, and 12.

Reference numeral 21 denotes a through hole formed by inwardly recessing the center of the lower edge 22 of the unit main body 1 and between it and the decorative panel 3. A portion of the indoor air is sucked in through the through hole 21 and is discharged from the intake grill 17. It is designed to merge with the intake air of the air.

23 is located on the right side of the indoor chamber 5, and the unit main body 1 is positioned so that the front plate 24 faces the front opening 2.
This is an electrical control box built into the unit, which controls the compressor 13, the motor 25 of the cross flow fan 8, the motor 26 of the propeller fan 16, and the electric heaters 10, 11, 1.
Electrical components 27 for controlling the operation of 2 are housed therein.

Reference numeral 28 denotes a power supply connection chamber formed by recessing a corner portion of the electrical equipment control box 23 facing the through hole 21;
A power cord 9 has a primary connector 30 at one end and a plug 31 at the other end, and is led out of the unit main body 1 through the through hole 21. A power cord 32 is connected to the primary connector 30 in the power connection chamber 28. A secondary connector is fixed to a side wall 33 of the power supply connection chamber 28 facing the through hole 21 .

34 consists of a temperature fuse 34a and a bimetallic thermostat 34b, and the electric heaters 10, 1
This is an overheat protection device that protects Nos. 1 and 12 from overheating.

FIG. 2 is an enlarged perspective view of the power supply connection chamber 28, and FIG. 3 is an exploded perspective view of the connector. Electric heater 10,1
1 and 12, and nine fitting holes 35b are provided which fit into the nine protruding pins 35a of the primary connector 30, respectively.

36 is a first locking piece provided on the upper and lower surfaces of the primary connector 30 and engaged with the first protrusion 37 of the secondary connector 32; 38 is a lead wire 39, 40 connected to the primary connector 30; , 41 and shorting wire 4
2, and 43 is a second locking piece 45 provided on both sides of the connector cover 38 and engaged with the second locking piece 44 of the primary connector 30;
is the hole 4 formed in the mounting piece 46 of the power supply connection chamber 28.
This is a cord clip that fixes the power cord 29 to the mounting piece 46 by fitting the arrowhead piece 48 into the belt 7 and pushing the belt 49 into the square hole 50. 51 is a mark indicating the direction in which the primary connector 30 is inserted.

The connector cover 38 is divided into left and right symmetrical parts, and by inserting the screws 52b into the screw holes 52a and tightening them, the power cord 29 is caught, and even if the power cord 29 is pulled strongly, the lead wire 3
9, 40, and 41 are prevented from coming off from the primary side connector 30.

FIG. 4 is a side view of the primary connector 30, in which the terminals A to I are arranged as shown. In the example shown in FIG. 3, the lead wire 39 is inserted into the insertion hole of terminal A, and the lead wire 40 is A lead wire 41 is inserted into the insertion hole of the terminal F, and a lead wire 41 is inserted into the insertion hole of the terminal G, respectively.
This figure shows a state in which the shorting wire 42 is inserted across the insertion hole of the terminal B and the insertion hole of the terminal C.

FIG. 5 is a wiring diagram of the secondary connector 32, and the terminals A to G of this secondary connector are connected to the electric heater 10,
11, 12, an operation switch 53, a temperature fuse 34a, a bimetallic thermostat 34b,
and the relay winding 54 and this normally open relay contact piece 54
a, 54b, and 54c as shown in the figure.

Figure 6 is a wiring diagram of the primary connector 30 with a rated capacity of 20 amperes, with lead wires 39, 40, 4
1 and the shorting wire 42 are respectively connected to the terminals A and 42 as described above.
It is connected to B, E, F, and G as shown.
In addition, the plug 31 is a 20 ampere outlet 55.
It is shaped to match the shape of the.

The primary connector 30 and secondary connector 32 wired in this way are connected and the operation switch 53 is turned on.
When you turn on the middle 2KW electric heater 10,
Upper 1.5KW via connection 56 and shorting wire 42
The electric heater 11 is energized.

Figure 7 is a wiring diagram of the primary connector 30 with a rated capacity of 15 amperes.The difference from Figure 6 is that there is no shorting wire 42, and the plug 31a is shaped to match the shape of the 15 ampere outlet 55a. This is the point. When the primary connector 30 and the secondary connector 32 are connected and the operation switch 53 is turned on, only the 2KW electric heater 10 in the middle stage is energized.

Fig. 8 is a wiring diagram of the primary connector 30 with a rated capacity of 30 amperes.The difference from Fig. 6 is that the shorting wire 57 is connected across terminals D and E, and the plug 31b is connected to the Outlet for amperage 5
The point is that the shape matches the shape of 5b.
When the primary connector 30 and the secondary connector 32 are connected and the operation switch 53 is turned on, the 2KW electric heater 10 in the middle stage is connected to the 1.5KW electric heater 10 in the upper and lower stages via the connection 56 and the shorting wires 42, 57. Electric heaters 11 and 12 are energized.

Note that the temperature fuse 34a is connected to the electric heaters 10, 1.
It will turn off when the heat generation temperature of 1 and 12 reaches 120℃, and
The bimetallic thermostat 34b is set to turn off when the temperature reaches 65°C. When the thermostat 34b is turned off, the relay winding 54 is demagnetized, the normally open relay contacts 54a, 54b, and 54c are opened, and the electric heaters 10, 11, and 12 are deenergized.

Further, the above-mentioned primary side connectors 30 are all used with the same rated power supply voltage, and when different rated power supply voltages are used, terminals H and I shown in FIG. 4 are used.

In this way, if you connect the shorting wires 42, 57 across the terminals B and C and terminals D and E of the primary connector 30 and change the plugs 31, 31a, 31b according to the rated capacity of the power supply, energization can be carried out. The electric heaters 10, 11, and 12 are selected in accordance with the power supply capacity.

FIG. 9 shows another embodiment that replaces FIG. 3, in which instead of using the plugs 31, 31a, 31b and the connector cover 38, a side cover 58 that closes one side and the bottom of the power connection chamber 28 is used. A front cover 59 that closes the front side of the power supply connection chamber 28, and one end 61 of the side cover 58 that is penetrated through a hole 60 and secured with a nut 62, and a cord (not shown) that is directly connected to the power supply inside. This is because a metal pipe 63 is used.

The installation work is done through the installation holes 64 of the side cover 58.
is screwed into the screw hole 65 and the mounting hole 66 is screwed into the screw hole 67, respectively, and the metal pipe 63 is screwed into the side cover 5.
8, the power cord passing through the metal pipe 63 and the lead wires 39, 40, 41 are connected inside the side cover 58, and the primary connector 30 is connected to the secondary connector 32, and then After
When the projecting piece 68 of the front cover 59 is inserted into the engaging piece 69 of the unit body 1 from above and the mounting hole 70 is screwed into the screw hole 71, the power supply connection chamber 2 is completed.
8 is completely isolated from the outside, so the decorative panel 3
When cleaning the air filter 18 or inspecting the evaporator 7, electric heaters 10, 11, 12, cross flow fan 8, etc. by removing the lead wire 3,
You will not get an electric shock if you touch the connection points 9, 40, and 41.

According to such other embodiments, simply connecting the shorting wires 42 and 57 according to the rated capacity of the power supply,
The electric heaters 10, 11, 12 to be energized are selected in accordance with the power supply capacity.

(g) Effects of the invention According to the invention, a power connection chamber is formed by recessing the corner of the electrical control box, and a secondary connector is fixed to the side wall of this power connection chamber so that the connector is placed horizontally. Therefore, when connecting the primary side connector to the secondary side connector, the connection terminals of each connector are visible from the front of the unit body, so it is necessary to have a large number of connection terminals to accommodate power supplies with different rated capacities. It is also possible to easily align the primary connector.

In addition, since the power supply connection room is provided separately from the electrical control box so as to face the front opening of the unit body, the primary side connector and the power supply can be easily connected either by a connection method using a plug or a direct connection method without using a plug. be able to.

Furthermore, a through hole is formed between the lower edge of the unit body and the decorative panel that closes the front opening of the unit body, and the power cord is led out from this through hole, so when the decorative panel is attached or removed, Serviceability is improved because the power cord does not get in the way, and the through hole can also be used as an indoor air intake.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view showing a part of the internal structure of an air conditioning unit;
Figure 2 is an enlarged perspective view showing the main parts of the air conditioning unit, Figure 3 is an exploded perspective view showing the main parts of the air conditioning unit, Figure 4 is a side view of the primary connector, and Figure 5 is the secondary connector. Wiring diagram of the side connector, Fig. 6 is a wiring diagram of the primary side connector showing one embodiment, Fig. 7 is a wiring diagram of the primary side connector showing another embodiment,
FIG. 8 is a wiring diagram of a primary side connector showing two other embodiments, and FIG. 9 is an exploded perspective view of essential parts of an air conditioning unit showing another embodiment in place of FIG. 3. 1...Unit body, 2...Front opening, 3...
Decorative panel, 21... Penetration opening, 22... Lower edge of unit main body, 23... Electrical control box, 28... Power connection chamber, 29... Power cord, 30... Primary connector, 32... Secondary Side connector, 33... Side wall of the power connection room.

Claims (1)

[Scope of utility model registration request] In an air conditioning unit in which the front opening of the unit body is closed with a decorative panel, the through hole formed between the lower edge of the unit body and the decorative panel and the front plate facing the front opening are inserted into the unit body. A built-in electrical equipment control box, a power supply connection chamber formed by recessing a corner facing the through-hole of the electrical equipment control box, and primary and secondary side connectors that are connected to each other in this power supply connection room. , a power cord connected to the primary connector and led out of the unit main body from the through hole,
An air conditioning unit characterized in that a secondary side connector is fixed to a side wall of the power supply connection room facing the through hole.