JPS58500863A - Method and apparatus for producing hot water for domestic use from the heat power wasted in cooling vehicle engines - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] To produce hot water for domestic use from the thermal power wasted when cooling vehicle engines. Method and equipment technology field The present invention provides heat and heat from modified cooling systems of internal combustion engines used in automobiles. This invention relates to a device for heating round water for storage and human consumption.

Background technology Currently, most cooling systems used in internal combustion engines rely on heat exchangers (radiators). removes heat and transfers it to the atmosphere. car, for example 10-1100k or -Daily use over longer distances results in significant energy loss.

There are also proposals to limit this exchange with the atmosphere by limiting heat storage. the The stored heat is later lost to the atmosphere. West German Patent Application Publication No. 282169 No. 0 and other proposals in German patent application no. The heat is removed from the cooling water of vehicles, stored in vehicles, and later used at home or in industry. It has been proposed to send it out at a special pick-up point for use. Its aim It is very vague and the equipment is not described in sufficient detail.

Another scheme in German patent application no. 2930269 is to use the cooling fluid as a storage fluid. or by using a heat exchanger placed in a tank without circulating the stored fluid. It has been proposed to exchange heat directly from the cooling circuit, but this heat exchange rate is It was low. On the other hand, the capacity of the cooling circuit is greatly increased. In general, fever increases The actual use of heated water is not clearly described.

The main goal of the present invention is to eliminate the drawbacks of these proposals.

Disclosure of invention The present invention increases the capacity of the engine cooling circuit as claimed in the claims. Solving the problem of efficiently heating water for human consumption over short distances without Decide. The practical use of heated water is obtained by special features of the device. Main departure In Ming, a vehicle company, with or without a trailer, has two independent fluids. Equipped with a pressure loop. This means that in each loop, the hot fluid exits and cools down. This means that the fluid is returning. One loop is for the engineering/gin cooling system. This is because the other loop heats and stores water. These two loops , different fluids, namely the cooling fluid for the engine, the ninth heat storage flow in the storage circuit. Containing water for consumption by the body, e.g. humans, each loop has its own circulation pump The pumps are connected by a heat exchanger placed in the cooling circuit. cooling The circuit maintains approximately its initial fluid capacity. One engine cooling company, two temperatures Includes self-regulating control valve.

One side is always placed at the outlet of the 4-way tube, and the other side is at the outlet of the heat exchanger for heat dissipation. Adjust the flow to the vessel. The storage tank has a large temperature between the two sides of the heat exchanger Get the difference and improve heat transfer. (A laminated plate is provided.Storage circuit circulation pump However, very good heat exchange is possible. According to the above 4 pumps, hot water is also added. It is ensured that the water is distributed inside the object or that this water is transferred to the outside. .

The advantages obtained by this invention are basically as follows. Cooling circuit and storage By separating the storage circuit, short distances (10 to 5 0km), hot water can be made directly from the vehicle. Cooling circuit characteristics (volume, dimensions, flow By making slight modifications to the can be used. Another significant advantage is that the storage circuit can be emptied or removed. The system is completely reversible, which ensures normal operation of the engine in the event of an accident. the latter , the weight of the vehicle is 15 to 20 hg more than its normal condition. Ginai.・Using hot water inside or outside the vehicle is an option for storage circuit pumps. It becomes very easy to run. Vehicle heating in case of shift and stop is by convection radiator. It can be obtained by storing and circulating hot water within. Applying this device to vehicles For some types, this can be achieved through the use of a combined heat exchanger-radiator. It can be done easily. Another advantage is that the engine has improved thermal regulation and The presence of two automatic temperature control valves reduces the time it takes to reach normal operating temperature. be. one Other features and advantages of the invention will appear during the course of the following description. This document's wax We describe some forms of the invention using the nine drawings contained in the drawings. Of course Yes, other formats are possible.

Brief description of the drawing Figure 1: A heat exchanger integrated inside a radiator and a pump driven by an electric motor. Indicates a format with Heat/water is supplied by a storage circuit pump operated in reverse. and transported to fixed storage tanks.

Figure 2 shows the details of the fixed tank and its connections. Figure 3 shows the details of the fixed tank and its connections inside the radiator. mechanically driven by the engine or cooling circuit pump Let us illustrate the case of a pump. Temporarily connect the storage tank, hot water distribution circuit, and cold water supply circuit. The stored water can be used directly by being hydraulically connected to the

Figure 4 shows a heat exchanger containing a bundle of tubes instead of hoses and a point driven by an electric motor. water pump and direct use of water inside the vehicle or inside the trailer. 0Vehicle or trailer heating is the best way to implement the invention with a convection radiator. form Figure 1 shows the cooling circuit (L 2.3 or 4.5.6) and the storage circuit (8, 10, 1 2, 16, 9). Ordinary heat sinks can be understood better The radiator is replaced by a radiator with a combined heat exchanger, shown in front view. and part 4 corresponds to a conventional liquid-air radiator with an associated ventilator. Ru. Part 3 is the primary side of the liquid-liquid heat exchanger.

The purpose of such a design is for the two parts of the exchanger to be easily connected. Having a common plenum. On the other hand, standard heat sinks can be used in such devices. This makes it easier to apply the present invention to existing vehicles. An easy method can be obtained. The automatic temperature adjustment control valve 5 can be incorporated into the sections 4 and 30. Wear. The heat exchanger 8, comprising a bundle of straight tubes or U-tubes, has a sufficient secondary transfer surface (0,0 5-0, 2 m2 or more). Connect the inlet and outlet pipes to the bottom of the bundle. can be tied. This design facilitates temperature induced expansion. engine cold The cooling circuit, ie the next circuit, includes pump 1, thermostatic control valve 2, part 3 and and 4, a thermostatic control valve 5, and pump inlet and outlet pipes 6. workman When the engine water temperature is high enough, the automatic temperature control valve 2 allows water to circulate to 3. , and the thermostatic control valve 5 is closed to prevent circulation to the temperature control valve 4. heat is heat The exchanger 8 exchanges it to the secondary circuit. Pump 9 driven by electric motor 33 , supplying the desired flow rate. The temperature of the cooling circuit measured by the globe 34 is sufficient As soon as the temperature rises (eg 40° C. to 60° C.), the tank is activated. Savings When the temperature measured by the globe 35 of the stored circuit reaches the desired value (for example, 60°C or 80℃), the $yp9 will stop. The pump is connected between the negative side and the secondary side. It has a variable speed 11 that increases when the temperature difference decreases. This is due to a relationship of the form This is done to increase the heat transfer coefficient given.

k: Coefficient Pr Nyrantl number Ro: Reynolds number λ: Thermal conductivity P: Transmission force Reynolds number is a function of pump speed and physical properties of the fluid. Given the The law that gives the rotational speed of the pump as a function of temperature and temperature difference for the transmitted force is can be determined. Using the electronic device 37Fi and the measured values of probes 34 and 35 We can reproduce the friend function described above. The tubes 10 and 16 are provided with laminated plates 13 Storage tank 12 is connected to exchanger 8 and pump 9. Temperature f part 3 is very high (for example, 70°C to 85°C), the automatic temperature control valve 5 opens and the cooling fluid flows into section 4 and reduces the flow to section 3. The standard fan starts and Limit the temperature of 4 in the usual manner. From the tank 12 to the fixed outer tank 32 (Fig. ) can be achieved by means of a pump 9. reverse the pump To do this, reverse the wires that energize the motor 33. Hot water is piped from the top of tank 12. It is sucked out via 10 and pumped to the top of 32 via tubes 16 and 28.

This operation requires only three valves, valve 21 closed and valve 20.22 opened.

Hoses 28 and 29 provide the necessary hydraulic connections. Electronic device 37 supervises the transfer of hot water. You can see it and stop it. The safety valve 17 is compensated by the expansion volume 14 of the storage circuit. Avoid overpressurization that would not be possible.

FIG. 2 shows a tank 32 with a laminated plate 13. FIG.

When the valves 24 and 25 are open, hot water flows through 28. , and the cold water is returned by 29 to tank 1 (FIG. 1). The laminated plate is the hot water being transferred. and reduce mixing with cold water. Quick-lock hydraulic connections (e.g. -8TAUBLI'' ) can replace valves 20, 22 (FIG. 1) and 24,25.

Valves 26 and 27 separate tank 32 from inlet cold water 30 and outlet hot water 31 be able to.

FIG. 3 shows that the secondary circuit pump 9 is driven directly by the engine or cooled. Another type of circuit 4 connected to amplifier 1 is shown. An additional temperature source placed in the secondary circuit The dynamic adjustment control valve 11 and the bypass XS volume adjust the flow of the section 8 toward the tank 12. It is necessary to do so. The automatic temperature adjustment control valve 5 connects the radiator 4 to the exchanger 3. can be placed in an extra tube. According to the safety valve 17, there is Overpressures which cannot be compensated for by the expansion volume 14 are avoided. Units ) 12-14 are easy to remove. Tank 12#i Like a normal hot water tank use @8TAUBLIm type quick lock hydraulic connection 20.23 is used to connect the tank. 12 is connected to the cold water supply circuit 30 and the hot water distribution circuit 31. Vehicle lines, water are used No need to park near the location.

FIG. 4 shows another format with liquid-liquid heat exchange @3-8, including a bundle of tubes.

These tubes have a low pressure drop and a satisfactory transfer surface (0.05-0.2 ml or more). The exchanger is attached to the hose. -Next 1 Direct return from 113 to the engine is via calibration tube 7. Figures 1 and 3 In the case shown, the direct return is via the combined heat exchanger greenum. child The type of operation is the same as that described above. Heat exchanger 3-8 takes enough heat. When the cooling fluid does not leave the radiator 4, the thermostatic control valve 5 opens and the cooling fluid flows into the radiator 4. Ru. Switches 38 and 39 of thermostats 34 and 35 start motor 33, respectively. 9 I moved it and stopped it. Distribute hot water into the vehicle or trailer using square 23 can do. The hot water is pressurized by pump 9 or by compression of volume 14. give. The pump 9 is activated or deactivated depending on the position of the valve 23. It is driven by a motor 33. The compression of the volume 14 is due to the expansion of the water in the storage circuit. and caused by the air within volume 14. When the engine is stopped, pipe 10 or The vehicle can be heated by a convection radiator 18 placed on one side or 16. versus By opening the shutter 19 of the flow heat radiator, the thermostat 36 is connected. This thermostat determines whether the motor 33 of the pump 9 is started or stopped. The contact point 40 determines whether the The shutter 19 is closed while the water is being heated. It is. During this phase, very little heat is lost and the efficiency of the storage circuit is limited. Not possible.

Claims (1)

[Claims] 10 From modified cooling systems of vehicle engines, and for domestic use due to heat storage In the equipment for obtaining hot water, with a trailer, the light is The device is equipped with two independent closed hydraulic loops, i.e. each loop is filled with hot fluid. departure and cold fluid return, one loop (1, 3, 4, 5, 6) The other loop (8, 10, 12, 16, 9) is for the water cooling system. These two loops are used to heat and store different fluids in the engine. cooling fluids for storage circuits and heat storage fluids for human consumption, e.g. Each loop has its own circulation pump and is attached to the cooling circuit. Even if the two loops are connected to a heat exchanger, the capacity of the circuit increases only slightly. A device characterized by thermal coupling. B: The modified cooling circuit has a lower A liquid-to-liquid heat exchanger (3, 8) designed to have a pressure drop is used; This heat exchanger is easily installed in place of the existing hose, and the heat exchanger (3, 8) U-tube to obtain a suitable exchange surface (0.05-0.2m2 or plus) or a bundle of other types of tubes, the secondary side (8) being connected to the tank (9) by the tank (9). 12) Constituting a ninth element for heating the filtrate flowing towards Apparatus described in Scope No. 1. 3. Prevent the warming up of the engine and its normal operation from being affected. It includes two thermostatic control valves that shut down when the engine's normal operating temperature is reached. When the first valve (2) allows the flow to the cooling circuit and the secondary circuit A second valve (5) transfers heat to the vehicle's radiator (4) when there is insufficient cooling. Claim 1 or 2, characterized in that the invention is capable of moving. Devices listed in any of the above. 4. Combined heat exchangers of liquid-air (4) and several body-liquid (3,8) types, At least one purina shared by liquid-liquid (3) and liquid-air (4) system, incorporated or located in one or several supplementary pipes, depending on the situation. One or more temperature controls that open or close in response to changes It may have a control valve and an optionally separate kettle emptying valve; Claims 1 and 2, wherein a conventional heat radiator is replaced by a photothermal exchanger. Item 9 is a device described in any of Item 3. 5. A pump (9) providing flow to the secondary circuit of water for human consumption is connected to the engine. or by a water pump of the normal cooling circuit. Equipment described in. 60 An electric motor (33) energized by the vehicle's electrical circuit drives a secondary circuit pump (9). Apparatus as claimed in claim 1 characterized. 7. - The motor (33 ) including temperature control devices that start or stop the A device according to any one of Item 1 and Item 6 of the Claims. 8. An electrical device (34) is connected to or connected to the storage circuit as a function of the measured temperature. The voltage applied to the motor (33) is a function of the temperature difference between the engine cooling circuits and therefore A device as claimed in claim 1, 6 or 7 characterized by its speed. 9. From the vehicle storage tank (12), a storage tank placed in a place where hot water is used. (32) placed on a vehicle or trailer to transfer hot water to (32) ) is used in reverse when driven by an electric motor. Scope of Requirement Item 1, tJL Item 5, Item 6, Item 7 or Item 8. equipment. 10. The pump (9) of the secondary hot water storage circuit is installed in the vehicle in a tray connected to the vehicle. Claims 1, 6, 7, and 8 are used for distributing this water within the tank. 9. The device according to any one of Items 9 and 9. 11. Storage circuit tube (10) to heat the vehicle when the engine is not running or (16) comprising nine convection radiators (18); There is a shutter in the convection radiator, and the storage tank water is heated. energizes the thermostat (36) by opening the , whether to turn on or off the motor (33) that drives the pump (9). Claims 1 to 4 and 6 to 10 are as follows: Equipment described in any of the paragraphs. one or several laminated plates to physically separate the hot and cold water chambers. 3) in the storage tank (12), and this device transfers or directly transfers the heating phase and hot water. tclll according to claim 1, characterized in that the access phase is improved. lll. 13. By including a free expansion volume in the storage tank, which is a necessary part of the secondary circuit. , form a means for obtaining nine (1 to several A-rules) pressurized by the expansion of water and air, According to any one of claims 1 or 2, Equipment described. 14. According to two separate circuits and thermostats or other devices, the secondary When emptying the circuit, the radiator or combined heat exchanger part (4) Keeping the engine cool at all times and removing the storage tank will allow the vehicle to as claimed in any one of claims 1 to 7, wherein the initial state of Device.