JPS6023617Y2 - local cooling machine - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a local air conditioner.

A conventional local air conditioner is shown in FIGS. 1 and 2. High-temperature, high-pressure refrigerant gas compressed by a compressor 1 enters a condenser 3 via a discharge pipe 2, where it is pumped by a blower 4 on the condenser side. After releasing heat and liquefying, it exits the condenser 3, is depressurized by the capillary tube 5, and enters the evaporator 6.

The liquefied refrigerant is endothermically gasified in the evaporator 6 from the suction air 8 sent by the evaporator-side blower 7, and returns to the compressor 1 through the suction pipe 9.

A series of devices constituting the above-mentioned general refrigerant cycle are housed in an outer box 10 in FIG.

During this refrigerant cycle, the suction air 8 sucked in from the evaporator side air suction port 11 by the evaporator side blower 7 absorbs heat in the evaporator 6 and is cooled. and stored in the drain tank 13.

The outer box 10 is provided with casters 14.

With the above configuration, the conventional machine does not need to fix the outer box 10 in terms of drain processing, and this machine has the drain tank 13 inside the outer box 10. I don't accept it.

For the drain, take out the drain tank 13 from the outer box 10 and set it aside.

This machine has the feature of being easily movable due to the casters 14, but on the other hand, there was a problem in heat dissipation from the condenser 3.

That is, this machine uses cooled evaporator-side air 16 that is sucked in from the evaporator-side air suction port 11 and blows out from the evaporator-side air outlet 15 to hit the object to be cooled in spots, and the condenser-side air Sucked in from the suction port 17 and the condenser side outlet 18
The only way to release the heated air 19 from the condenser side is to release it in a direction other than the object to be cooled.

Therefore, if you use this machine in a closed room, etc., the amount of heat dissipated is greater than the amount of heat absorbed, so the room temperature will rise as you operate.
There was no choice but to use the condenser 3 in such a way that the amount of heat dissipated was released outside.

In order to improve this point, a bellows-shaped flexible exhaust duct 20 is attached to the condenser side outlet 18, and heated condenser side outlet air 19 is installed so as not to destroy the characteristic of easy movement.
Efforts were made to allow the water to escape outside, but it was not sufficient.

Another type is an air conditioner that drains the drain outdoors.In this case, a drain hose is used, one end of which is connected to the drain tray 12, and the other end is drained outdoors through a hole made in the indoor wall. However, the location was restricted depending on how the drain hose was installed, and movement of the main body was restricted.

The present invention solves the above-mentioned conventional problems and aims at processing the heat radiated from the condenser and utilizing this heat.

An embodiment of the present invention is shown in FIGS. 3 to 5.

Numbers 1 to 19 have almost the same shape as the conventional figure 1,
Since they have the same effect, they are given the same symbols.

A water heat exchanger 21 is connected to the discharge pipe 1 between the compressor 1 and the condenser 3.
8 and piping 22 in series.

The water heat exchanger 21 has a water supply connection port 23 and a drainage connection port 24 for supplying and discharging water for cooling, and a water supply connection port through hole 25 and a drainage connection port through hole 26 provided in the outer box 10.
Flexible hoses 27 and 28 are connected to the water supply connection port 23 and the drainage connection port 24 through them, respectively.The flexible hose 27 is connected to the discharge side of the water pump 29, and the flexible hose 30 is connected to the suction side of the water pump 29. The end of the flexible hose 28 is connected to the water storage container 31, and one end of the flexible hose 28 is also inserted into the water storage container 31.

A bimetal thermoswitch 32 is attached to the outlet pipe 22 of the water heat exchanger 21, which senses the temperature of the refrigerant in the pipe 22, and when the temperature is higher than a predetermined temperature, the contact changes to the state 33 shown by the solid line in Fig. 5. The condenser side blower motor 3
If the temperature is lower than a predetermined temperature, the state is conversely indicated by a broken line 33', and the notch is connected to the low speed rotation notch.

The evaporator side blower motor 35 and the compressor motor 36 are
The bimetal thermoswitch 32 and the condenser-side ventilation motor 34 connected in series are connected in parallel, and energization of these is performed by opening and closing a switch 37.

Note that 38 is a power plug.

Next, the operation of the present invention will be described. The flexible hoses 27 and 28 are connected to the water supply connection port 23 and the drainage connection port 24, respectively, and the water pump 29 is driven to circulate the water in the water storage container 31.

On the other hand, the high-temperature, high-pressure refrigerant gas compressed by the compressor 1 enters the water heat exchanger 21 through the discharge pipe 2, and exchanges heat with the circulating water (
heat dissipation) and enters the condenser 3 through a pipe 22.

The refrigerant gas that has entered the condenser 3 exchanges heat (radiates heat) with the suction air 8 sent by the condenser-side blower 4, and exits the condenser 3 as a high-pressure liquid refrigerant.

The high-pressure liquid refrigerant is depressurized by the capillary tube 5, becomes a low-pressure liquid refrigerant, enters the evaporator 6, exchanges heat (absorbs heat) with the suction air 8 sent by the evaporator-side blower 7, becomes a low-pressure gas refrigerant, and enters the suction pipe. 9 and returns to the compressor 1.

In this cycle, due to the circulation of water, the temperature of the refrigerant passing through the pipe 22 at the outlet of the water heat exchanger 21 is lower than when water is not circulated.

The bimetal thermoswitch 32 detects this temperature change and switches its contact to change the rotation speed of the condenser side blower motor 34.

That is, when the refrigerant temperature is lowered by the circulating water, the rotation speed of the condenser side blower motor 34 is lowered, and the air volume is reduced.

Conversely, if the water is not circulated, or if the water temperature is sufficiently high and the refrigerant temperature does not drop even if it is circulated, the rotational speed will not be reduced and air will be blown normally.

Instead of the water punch 29, water may be supplied directly from the tap.

As described above, the present invention is a water heat exchanger that exchanges heat between water and refrigerant in a refrigerant pipe between a compressor and a condenser in a local air conditioner that discharges indoor air into the room through a condenser and an evaporator. are connected in series, and a flexible hose is connected to supply and drain water to and from the water heat exchanger.A temperature sensing part is attached to the water heat exchanger outlet, and the temperature of the refrigerant at the water heat exchanger outlet causes condensation. This is a local air conditioner equipped with an air volume adjustment mechanism that adjusts the air volume of the air blower on the side of the condenser. Therefore, the amount of heat released from the condenser becomes smaller.

For this reason, the rise in room temperature when used in a closed room can be suppressed.

(2) At this time, the rotational speed of the condenser-side blower motor is reduced, which also reduces noise.

(3) By circulating the water in the water storage tank in the water heat exchanger, it can be raised to a temperature close to the discharged refrigerant gas, and this hot water can be used for bathing, washing, etc.

(4) Since flexible hoses can be used for water supply and drainage, the movable feature of this machine is not impaired.

It has excellent effects such as

[Brief explanation of drawings]

Figures 1 and 2 are a front view and refrigeration cycle diagram of a conventional local air conditioner, Figures 3 to 5 are an embodiment of the present invention, Figure 3 is a front view, and Figure 4 is a refrigeration cycle diagram. cycle diagram,
FIG. 5 is a wiring diagram of the air volume adjustment mechanism of the condenser side blower and each motor. 1... Compressor, 3... Condenser, 4...
...Condenser side blower, 6...Evaporator, 7.
...Evaporator side blower, 10 ...Outer box, 1
3------Drain tank, 21... Water heat exchanger, 22... Piping, 23... Water supply connection port, 24... Drainage Connection port, 27, 28, 30
・Curved/flexible hose, 29...Water pump, 31.
...Water storage container, 32...Bimetal thermoswitch, 33°33'...Contact, 34...
...Condenser side blower motor.

Claims (1)

[Scope of utility model registration request] In a local air conditioner that discharges indoor air indoors through a condenser and an evaporator, a water heat exchanger that exchanges heat between water and refrigerant is connected in series to the refrigerant piping between the compressor and the condenser. In addition to connecting a flexible hose for supplying and draining water to and from the water heat exchanger, a temperature sensing part is attached to the outlet of the water heat exchanger, and the air volume of the condenser side blower is adjusted according to the refrigerant temperature at the outlet of the water heat exchanger. A local air conditioner characterized by being equipped with an air volume adjustment mechanism.