JPH0526255Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a device in which a radiator for cooling engine cooling water and a condenser for cooling the inside of a vehicle are integrated.

[Prior art]

In recent years, most passenger cars have been equipped with car air conditioners for cooling the inside of the car. Therefore, a radiator for cooling engine cooling water and a condenser for the car air conditioner are installed in the engine compartment.

[Problem to be solved]

However, due to the slant-nose shape of passenger car bonnets, the reduction in the cost of passenger cars themselves, and other factors, engine rooms have become smaller and smaller. Therefore, it is desired that car air conditioners and engine coolant cooling radiators be made smaller, easier to install, and lower in price as a whole.

Furthermore, it is not unthinkable to insert a condenser into the tank of the radiator for cooling the engine coolant, just as an oil cooler is built into the tank of the radiator for cooling the engine, but in that case, the following disadvantages occur.

First, the temperature of the radiator's outlet tank is relatively high at around 80 degrees, and if the refrigerant were to be cooled with such cooling water, the heat dissipation area of the condenser would have to be large, leading to an increase in the size of the device.

Also, if the radiator is made into a multi-pass type and the cooling water is supercooled, the circulation resistance of the engine cooling water will increase, resulting in a decrease in the cooling water flow rate of the radiator.
There is a possibility that the radiator capacity will decrease.

[Means for solving problems]

Therefore, the present invention adopts the following configuration in order to solve the above problems.

That is, both ends of a plurality of tubes 3 are fluid-tightly communicated with an elongated inlet tank 1 and an elongated outlet tank 2 which are spaced apart from each other, and a fin 4 is fixed in contact between the tubes 3 and 3, respectively. The inlet tanks 1 and 2 are provided with an inlet pipe 5 and an outlet pipe 6 for circulating engine cooling water. Here, the feature of the present invention is that at least the inlet tank 1 has a partition 9 inside.
, thereby forming a first chamber 7 in which one end of the inlet pipe 5 opens, and a second chamber 8 in which the inlet pipe 5 does not open. Then, part of the cooling water that has passed from the first chamber 7 to the outlet tank 2 in one pass is caused to flow out from the outlet tank 2, and other cooling water is made to make a U-turn through the outlet tank 2 to The water is introduced into the chamber 8 and used as return pass cooling water. The condenser 10 for cooling the inside of the vehicle is cooled in the tank by the return pass cooling water, and the cooling water after cooling the condenser 10 is used together with the cooling water directly flowing out from the outlet pipe 6 to cool the engine water. It is characterized by refluxing into the jacket. Therefore, according to the present vehicle radiator, it is possible to cool the engine cooling water and the car air conditioner condenser 10 with one radiator core. Moreover, since the condenser 10 for the car air conditioner exchanges heat with the coolant cooled to a low temperature by passing the engine coolant back through the condenser 10, a compact and efficient cooling device can be provided. After cooling the condenser 10, the cooling water flows back into the water jacket of the engine. At the same time, the cooling water flowing out from the outlet pipe 6 in one pass also flows back into the water jacket of the engine to cool the engine.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

FIG. 1 is an explanatory schematic diagram of the radiator of the present invention, and FIG. 2 is an explanatory diagram showing a circuit for engine cooling water and a car air conditioner. This radiator has vertically spaced elongated inlet tanks 1 and 2, respectively, and constitutes a core 18 with a large number of parallel tubes 3 and fins 4 disposed between them. installed between both tanks. Both ends of each tube 3 communicate with the inlet tank 1 and the outlet tank 2. Next, inlet tank 1
As shown in FIG. 1, there are three spaces in the longitudinal direction, namely a first chamber 7, a second chamber 8, and a third chamber 11
two partitions 9 in the width direction so that
will be provided. Furthermore, two partitions 9 are similarly provided inside the outlet tank 2. The partition 9 of the outlet tank 2 and the partition 9 of the inlet tank 1 are provided at different positions in the longitudinal direction. Furthermore, the outlet tank 2 has its sixth chamber 14.
A seventh chamber 15 is formed between the two via the control valve 22, and the capacitor 10 is disposed in the seventh chamber 15. The refrigerant 24 flows into the condenser 10 from one inlet and flows out from the other port. Note that this refrigerant 24 flows in through the compressor 19 as shown in FIG.
0, it flows into the compressor 19 via the evaporator 21 and is circulated. Next, in FIG. 2, cooling water 23 flowing out of the engine 16 flows into the inlet tank 1, flows through the core 18, and reaches the outlet tank 2. At this time, running wind accompanying the running or cooling air from the fan 17 flows through the core 18 to the outer surface of the tube 3 . As is clear from FIG. 1, this core 18 is divided into four parts because there are partitions 9 in each of the inlet tank 1 and the outlet tank 2. First, the cooling water 23 that has flowed into the first chamber 7 of the inlet tank 1 flows down the core on the right side and flows into the fourth chamber 12 of the outlet tank 2.

A large amount of the cooling water 23 then flows back directly from the outlet pipe 6 to the water jacket of the engine.
In addition, some of the cooling water 23 makes a U-turn in the fourth chamber 12, ascends the core in the left-centered part, flows into the second chamber 8, and further makes a U-turn in the second chamber 8 to move up the core in the left-sided middle part. The water then descends again, then makes a U-turn at the fifth chamber section 13 and the third chamber section 11, respectively, and flows in a meandering manner. Then, via the control valve 22, the seventh chamber 15
It flows into the capacitor 10 and cools the condenser 10. The temperature of the cooling water 23 flowing in from the inlet pipe 5 is, for example, about 90°C to 110°C, and the temperature at which it directly flows out from the outlet pipe 6 is about 80°C. Note that the amount of cooling water flowing out from the outlet pipe 6 is kept at about three quarters of the total amount. and the remaining quarter
The cooling water flows in a meandering manner as shown by the arrow and reaches the seventh chamber 1.
5, its temperature is approximately 45°C.
The condenser 10 is then cooled to a temperature of approximately 55°C, which is then returned to the engine's water jacket via the water pump. On the other hand, the refrigerant 24 flowing into the condenser 10 has an inflow temperature of about 90°C and an outflow temperature of about 55°C. However, it goes without saying that these temperatures and flow rates vary depending on various conditions. Note that capacitor 1
When the engine 0 is not used, all of the cooling water 23 can be directly returned to the engine through the outlet pipe 6 by closing the control valve 22.

[Effect of idea]

The vehicle radiator of the present invention has the above configuration and has the following effects.

This vehicle radiator circulates a part of the cooling water to the return path, thereby cooling the condenser 10 for cooling the inside of the vehicle in the tank with the return path cooling water cooled to a low temperature. Heat exchange can be improved. Therefore, the capacitor 10 can be made small and housed in a relatively small tank. And capacitor 1
The cooling water after cooling the radiator core and the cooling water that passed through the radiator core in one pass are respectively returned to the engine, and the engine can be cooled using all of the cooling water that has passed through the different flow paths. Moreover, since only a portion of the cooling water is of the multi-pass type, the flow resistance of the entire cooling water does not become excessively large, and a sufficient flow rate of the engine cooling water is ensured without reducing its cooling capacity.

Note that if a condenser is inserted directly into the outlet tank where some of the cooling water passes through one pass without making it a return pass, the condenser will have to be larger because the cooling water temperature will be relatively high. The invention eliminates its shortcomings. Also, if all the cooling water is of a multi-pass type, the flow resistance of the cooling water will become too large.
Although it is not possible to ensure a sufficient flow rate of engine cooling water, this problem is also solved by the present invention with the above configuration. In addition, it is possible to provide a space-saving radiator that can cool the engine coolant and the condenser with one heat exchanger core. Furthermore, the conventional engine coolant cooling radiator and air conditioning heat exchanger can be integrated, and the whole can be provided at low cost.

[Brief explanation of drawings]

FIG. 1 is an explanatory schematic diagram of the radiator of the present invention, and FIG. 2 is an explanatory diagram showing the engine cooling water and car air conditioner circuits of the radiator. 1...Inlet tank, 2...Outlet tank, 3...
Tube, 4...Finn, 5...Inlet pipe, 6
... Outlet pipe, 7 ... First chamber section, 8 ... Second chamber section, 9 ... Partition, 10 ... Condenser, 11 ...
3rd chamber, 12... 4th chamber, 13... 5th chamber, 14... 6th chamber, 15... 7th chamber, 16
...engine, 17...fan, 18...core,
19... Compressor, 20... Expansion valve, 21...
... Evaporator, 22 ... Control valve, 23 ... Cooling water, 24 ... Refrigerant.

Claims (1)

[Scope of utility model registration request] A pair of elongated inlet tanks 1 and outlet tanks 2 spaced apart from each other, a plurality of tubes 3 having both ends fluid-tightly communicating with both tanks 1 and 2, and an inlet provided in each of the tanks 1 and 2 for flowing engine cooling water. In a vehicle radiator comprising a pipe 5 and an outlet pipe 6, at least the inlet tank 1 has a first chamber 7 in which one end of the inlet pipe 5 opens and a second chamber 8 in which the inlet pipe 5 does not open. A partition 9 is provided to allow a portion of the cooling water that has flowed from the first chamber section 7 to the other tank 2 in one pass to directly flow out from the outlet tank 2, and also to allow the cooling water to flow directly from the outlet tank 2 to the other tank 2 through the outlet tank 2. The cooling water is made a U-turn and guided to the second chamber section 8 as return pass cooling water, and the return pass cooling water cools a condenser 10 for cooling the inside of the vehicle in the tank, and the condenser 10
A vehicle radiator characterized in that the cooling water after cooling the engine is returned to the water jacket of the engine together with the cooling water directly flowing out from the outlet pipe 6.