JPS5813216Y2 - cooling heating system - Google Patents

Description

[Detailed description of the invention] The present invention relates to a cooling and heating system using water as a heat medium.
In particular, the present invention relates to a cooling/heating system that can effectively utilize exhaust heat from a cooling water system for heating by balancing the amounts of water between the cooling water system and the heating water system.

BACKGROUND ART In operational or durability tests of automobile engines, cold water cooling devices are used to prevent the engine from overheating.

This cold water cooling device includes a cooling tower for cooling circulating water, and a cooler for exchanging heat between the circulating water cooled by the cooling tower and the engine.

The circulating water discharged from the cooler has an extremely high temperature, and various studies have been made in the past to utilize the thermal energy retained in this high-temperature water in heating devices such as hot water heaters.

However, generally, the amount of water circulating through the cooling water system in the cooling device and the amount of water circulating through the heating water system in the hot water heating device do not match.

For this reason, even if the cooling water system and the heating water system are directly connected, there will be an excess or deficiency in the amount of water in either system, making it impossible to effectively utilize the energy possessed by the high-temperature water in the cooling water system.

Therefore, an object of the present invention is to provide a cooling/heating system that can effectively utilize the retained thermal energy of high-temperature water discharged from a cooler in a cold water cooling device for heating.

The present invention introduces high-temperature water discharged from the cooler of a cold water cooling device to a high-temperature water tank, guides the high-temperature water in the high-temperature water tank as a heat medium to a radiator of a hot water heating device, and discharges the low-temperature water from the radiator. introducing water into a low-temperature water tank connected to the high-temperature water tank;
The low-temperature water that raises the specified water level in the low-temperature water tank is led to an auxiliary water tank, and the low-temperature water in the auxiliary water tank is cooled by a cooling tower and sent to the cooler.

Therefore, according to the present invention, the high temperature water tank, the low temperature water tank, and the auxiliary water tank, which are communicated with each other, can balance the overall amount of water circulating through the cooling device and the heating device. Thermal energy retained in the high-temperature water discharged from the vessel can be effectively used for heating.

The features of the present invention will become clearer from the following description of the illustrated embodiment')0 In FIG. ing.

The system 10 includes a cooler 14 for exchanging heat with a high-temperature body 12 such as an engine to cool it, a cooling tower 16 for cooling circulating water fed to the cooler, and a hot water heater. , and first and second water tanks 20 and 22 that are communicated with each other.

In the illustrated example, the first and second water tanks 20.22 are integrally formed by a container 24 made of a heat insulating material and a partition wall 26 that partitions the inside of the container. Both aquariums 20,22 can communicate with each other through an opening 28.

A first water tank for guiding high temperature water discharged from the cooler 14 through heat exchange with the high temperature body 12 to the second water tank 22.
A tube 30 extends into the second water tank 22.

The second water tank 22 is connected to the radiator 1 through a second pipe 32.
8 is connected.

The second pipe 32 is connected to the second water tank, that is, the high temperature water tank 2.
Pump 34 for feeding high temperature water in 2 to the radiator 18
In the illustrated example, an auxiliary heating device 36 is also provided.

The auxiliary heating device 36 includes a steam heat source 38 , a heat exchanger 40 for heating high-temperature water passing through the pipe 32 with the heat source, and a temperature control mechanism 42 , the control mechanism including a steam heat source 38 that heats the high-temperature water passing through the pipe 32 . The temperature of the high temperature water is detected, and depending on the temperature of the high temperature water, the steam heat source 38 is connected to the heat exchanger 40.
control the amount of steam supplied to

The high-temperature water fed from the high-temperature water tank 22 to the radiator 18 via the second pipe 32 releases part of its thermal energy by the radiator 18, and then is discharged from the radiator 18 as low-temperature water. The low temperature water is transferred from the radiator 18 to the first water tank 2.
It is led into the first aquarium 20 via a third tube 44 extending to 0.

A valve 46 is provided at the discharge port of the third pipe 44 to open the discharge port in conjunction with the pump 34 provided in the second pipe 32 .

The first water tank, that is, the low temperature water tank 2 into which low temperature water is introduced.
A fourth pipe 5 extending to the auxiliary tank 48 is installed on the upper side wall of the
0 end is open.

Therefore, of the low-temperature water introduced into the low-temperature water tank 20 through the second pipe 32, a portion corresponding to a height higher than the opening of the pipe 50 is transferred as overflow water to the auxiliary tank through the fourth pipe 50. 48.

Further, even if there is a difference in the inflow and outflow amounts of the first and second water tanks 20 and 22, the water in both the water tanks 20 and 22 will match the water surface of both the water tanks 20 and 22 due to the communication effect of the opening 28. As much as possible, it flows from one side to the other.

As a result, the high-temperature water and low-temperature water in both water tanks 20 and 22 maintain approximately equilibrium, but since low-temperature water and high-temperature water are continuously supplied to both water tanks 20 and 22, respectively, one of the above-mentioned The outflow from the ice tank 20 or 22 to the other water tank 22 or 20 does not cause the water temperatures in both the water tanks 20, 22 to become equal.

The low temperature water tank 20 is provided with a water supply mechanism 52,
The water supply from the water supply mechanism can compensate for a shortage of water due to evaporation or the like, and can also supply make-up water during startup.

A fifth pipe 54 extending to the cooling tower 16 is connected to the lower part of the auxiliary tank 48 that receives the overflow water.

The iron pipe 54 is provided with a pump 56, and when the pump operates, the low-temperature water in the auxiliary tank 48, that is, the overflow water, is sent to the cooling tower 16, and after being cooled by the cooling tower, it is sent to the cooling tower 16 as cooling water. The water is stored in a cooling water tank 58 installed below.

In order to maintain the water level in the auxiliary tank 48 within a certain range, the auxiliary tank 48 is provided with a sensor 60 that detects the upper and lower limits of the water level, and the pump 56 can be operated based on an activation signal from the sensor. .

The cooling water stored in the cooling water tank 58 is pumped through a pump 62.
is sent to the cooler 14 via a sixth pipe 64 having a
After heat exchange is performed in the cooler, the water is directed as high-temperature water through the high-temperature water tank 22 again to a radiator for heating.

In the above description, an example in which the auxiliary heating device 36 was provided in the second pipe 32 was explained, but if the high temperature water discharged from the cooler 14 has sufficient thermal energy, the auxiliary heating device may be installed. It can be made unnecessary.

Further, the high temperature water tank 22 and the low temperature water tank 20 can be provided separately, and a water level sensor is provided in the high temperature water tank 22 to stop the operation of the pump 34 when the water level in the high temperature water tank shows a significant drop. A protection mechanism may also be provided to prevent

According to the present invention, as described above, a high-temperature water tank that receives high-temperature water from a cooler is communicated with a low-temperature water tank that receives low-temperature water from a radiator, and overflow water from the low-temperature water tank is transferred to an auxiliary tank. By returning the water to the cooling tower through the rainwater tank, the high-temperature wastewater discharged into the high-temperature water tank can be directed to the radiator without wasting it without disrupting the water balance in the rainwater tank.
Thereby, the retained thermal energy of the high-temperature water discharged from the cooler can be effectively used for heating.

[Brief explanation of drawings]

FIG. 1 is a connection diagram schematically showing a cooling and heating system according to the present invention. 14: cooler, 16: cooling tower, 18: radiator, 20: low temperature water tank, 22: high temperature water tank, 30: first pipe, 32: second
pipe, 44: third pipe, 48: auxiliary water tank, 50: fourth pipe, 54: fifth pipe.

Claims (1)

[Scope of utility model registration request] A cooling tower, a cooler that receives cooling water cooled by the cooling tower and discharges high-temperature water through heat exchange with a high-temperature body, a radiator for hot water heating, and a low-temperature water tank that communicates with each other. and a high temperature water tank, an auxiliary water tank for the low temperature water tank, a first pipe that leads high temperature water discharged from the cooler to the high temperature water tank, and a first pipe that leads high temperature water in the high temperature water tank to the radiator. a third pipe that guides low-temperature water discharged from the radiator to the low-temperature water tank; and a fourth pipe that leads low-temperature water exceeding a specified water level in the low-temperature water tank to the auxiliary water tank;
a fifth pipe that leads low temperature water in the auxiliary water tank to the cooling tower.