KR100759422B1 - Heating system for enhancing initial warming performance of vehicles - Google Patents

Abstract

The present invention relates to a heating system for an automobile having an improved initial heating performance, in which high-temperature cooling water is stored in a thermostat reservoir and is supplied to a heater core using a cooling water pressure force of a water pump without starting a separate driving source The purpose.

The automotive heating system of the present invention comprises a first flow path (12) for returning the cooling water discharged from the engine (10) to the engine by the water pump (14); A second flow path 31 having a cooling water inlet flow path 32 connecting the first flow path and the heater core 30 and a cooling water discharge flow path 34 connecting the first flow path and the heater core; A power transmission means (50) connected to the first flow path and connected to the second flow path by the connection flow paths and circulating the cooling water of the second flow path (31) by the inflow pressure of the cooling water flowing through the first flow path; A cooling water warming reservoir 40 installed in the cooling water inlet flow path; And two intermittent valves (60, 62), which are sequentially installed at a portion connected to the first flow path of the second flow path and open or close the flow path under a predetermined setting condition.

Heating, cooling water, heater, heater core

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a heating system for an automobile,

1 is a configuration diagram showing a heating system for a vehicle according to the present invention.

2 is a cross-sectional view showing a structure of a power transmitting means constituting a heating system for a vehicle according to the present invention.

3 is a cross-sectional view showing the structure of an intermittent valve constituting a heating system for a vehicle according to the present invention.

4 is a view showing the flow of cooling water at the time of initial heating in the automotive heating system according to the present invention.

5 is a view showing the flow of cooling water after the initial heating in the automotive heating system according to the present invention.

Fig. 6 is a configuration diagram showing an example of a conventional automotive heating system.

7 is a configuration diagram showing another example of a conventional heating system for a car.

Description of the Related Art

10: engine, 12: first flow path,

14: water pump, 30: heater core,

32: cooling water inlet flow path, 34: cooling water discharge flow path,                 

36, 38: connection channel, 31: second channel,

40: cooling water inserting reservoir, 50: power transmitting means,

52: driving part, 52a: driving room,

52b: drive circuit, 52c, 54c: entrance,

52d, 54d: outlet, 54:

54a: a servant room, 54b: a servant tram,

56: shaft, 60, 62: intermittent valve

The present invention relates to a heating system for an automobile having an improved initial heating performance, and more particularly, to a heating system for an automobile which is provided with a heater core for supplying high temperature cooling water stored in a cooling water warming reservoir to a heater core using a cooling water pressure of an existing water pump, The present invention relates to a heating system for an automobile having an improved initial heating performance capable of increasing the heating performance of the automobile.

The automotive heating system is a device that heats the automobile interior by flowing into the automobile room in a state where the engine cooling water is heat-exchanged with the air blown by the blower constituting the air conditioner in the process of passing through the heater core. However, if the driver starts to ride and start the heating system while the vehicle is stopped for a long period of time in winter, the temperature of the cooling water is low at the beginning of the start, and the outside air or the inside air is discharged into the automobile room with little heat exchange. Also, even when the automatic thermostat is provided, the blower motor is driven to the lowest level, and the air discharge mode is set to the defrost mode, and the cold wind is blown to the driver until the temperature of the cooling water supplied to the heater core rises above a predetermined temperature. So as not to be discharged to the passengers. As a result, it is not a fundamental solution to how to control the low coolant temperature at the start of the engine, which is the avoidance control for the low temperature air discharge and causes the low temperature discharge.

Taking this into consideration, the technique disclosed in the U.S. Patent No. 5,765,511 has been proposed. 6, a three-way valve 130 is provided on the inlet flow path 120 side of the heater core 110, and a three-way valve 130 is provided between the three-way valve 130 and the inlet flow path 120. In this prior art, A first temperature sensor 150 and a second temperature sensor 160 are sequentially installed upstream of the three-way valve 130 and downstream of the heat storage mechanism 140, The values of the temperature sensors 150 and 160 are compared by the comparison circuit 170 to switch the three-way valve 130. Reference numeral 180 denotes a water pump. Accordingly, when the value of the first temperature sensor 150 is higher than the value of the second temperature sensor 160, the three-way valve 130 operates to close the flow path to the heat storage mechanism 140, The cooling water is directly supplied to the heater core 110 via the three-way valve 130. If the value of the first temperature sensor 150 is lower than the value of the second temperature sensor 160 at the beginning of the start, the three-way valve 130 operates to close the flow path to the heater core 110, And the cooling water is supplied to the heater core 110 through the three-way valve 130 and the heat storage mechanism 140. Accordingly, since the low-temperature cooling water and the high-temperature cooling water stored in the heat storage mechanism 140 are supplied to the heater core 110 in a mixed state, the heating efficiency in the initial stage is somewhat higher than in the conventional case, Rapid heating in the early stage of starting has a difficult problem.

7 has been proposed as another prior art disclosed in the above publication. In this case, a water pump 180 (not shown) is installed in the inlet flow path 120 on the side of the heater core 110 so as to increase the heating efficiency by increasing the flow rate of the cooling water at the start- ) Is installed. However, in the state where the cooling water discharged from the engine 100 is higher than the temperature of the cooling water stored in the heat storage mechanism 140, the heating efficiency is increased by the increase of the flow rate, but when the cooling water of the former is lower than the latter, The temperature of the mixed cooling water is lowered and the mixed cooling water is supplied to the heater core 110, so that the heating efficiency can not be increased.

In particular, the present invention provides a method of increasing the heating performance at the initial stage of startup by storing the high-temperature cooling water in the heat retaining reservoir and supplying the high-temperature cooling water stored at startup to the heater core using the cooling water pressure of the water pump without a separate driving source The purpose.

In order to achieve the above object, a heating system for an automobile having an improved initial heating performance according to the present invention includes: a first flow path for returning cooling water discharged from an engine to a engine by a water pump; A second flow path having a cooling water inlet flow path connecting the first flow path and the heater core to supply cooling water to the heater core and a cooling water discharge flow path connecting the first flow path and the heater core to send cooling water discharged from the heater core to the engine side, ; Power transmission means connected to the first flow path and connected to the second flow path by the first connection flow path and the second connection flow path to circulate the cooling water of the second flow path by the inflow pressure of the cooling water flowing through the first flow path; A cooling water inserting reservoir installed in the cooling water inlet passage for storing and discharging cooling water; And two intermittent valves which are sequentially installed at a portion connected to the first flow path of the second flow path to open or close the flow path under a predetermined setting condition.

According to the present invention, the power transmission means includes a drive chamber in which an inlet and an outlet are connected to a first flow path, a drive chamber having a drive circuit that is rotatably installed in the drive chamber by a shaft, A slave chamber in which the inlet is connected to the cooling water discharge channel by the first connection channel, an outlet is connected to the cooling water inlet channel by the second connection channel, and a slave trolley which is rotatably built in the slave chamber by the shaft And a driven portion for circulating the cooling water of the heater core-side cooling water flow path.

As an example of controlling the intermittent valves, when the cooling water temperature of the first flow path is higher than the cooling water temperature flowing through the second flow path, the intermittent valves can be respectively opened open. Alternatively, the intermittent valves may be controlled to open in a closed operation state, respectively, after a certain period of time after engine startup. In addition, the intermittent valves can be controlled to open when the temperature of the cooling water flowing through the first flow path is higher than a predetermined temperature.

The features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Prior to this, terms and words used in the present specification and claims are to be interpreted in accordance with the technical idea of the present invention based on the principle that the inventor can properly define the concept of the term in order to explain his invention in the best way. It must be interpreted in terms of meaning and concept.

Fig. 1 shows a configuration diagram of a heating system for a vehicle with an improved initial heating performance according to the present invention.

Reference numeral 12 denotes a first flow path constituting the heating system according to the present invention. The cooling water is discharged from the engine 10 by the water pump 14 and is returned to the engine 10. Reference numeral 20 denotes a cooling system for sending cooling water discharged from the engine 10 by the water pump 14 to the radiator 22 and returning the cooling water to the engine 10, .

According to the present invention, the first flow path 12 is connected to the second flow path 31 connected to the heater core 30. That is, in order to supply the cooling water flowing through the first flow path 12 to the heater core 30 and return the cooling water supplied to the heater core 30 back to the engine 10, And the outlet of the heater core 30 is connected to the outlet of the first flow path 12 by the cooling water inlet flow path 32 of the second flow path 31, And is connected by the cooling water discharge passage 34 of the two flow paths 31.

A part of the cooling water flowing through the first flow path 12 returns to the engine 10 via the first flow path 12 and the remaining cooling water flows through the cooling water inlet flow path 32, the heater core 30, (34) and the first flow path (12).                     

According to the present invention, a cooling water warming reservoir (40) capable of storing and discharging cooling water at a high temperature is installed in the cooling water intake flow path (32) in order to enhance the heating performance at the initial stage of engine startup. The cooling water inserting reservoir 40 may be of a type capable of heating the cooling water by electricity.

In order to allow the cooling water having a high temperature stored in the cooling water warming reservoir 40 to circulate through the second flow path 31 without flowing into the first flow path 12 at the start of the engine, The power transmission means 50 is connected to the second flow path 31 through the first connection flow path 36 and the second connection flow path 38, And is also connected to the flow path 34 and the cooling water intake flow path 32.

Specifically, as shown in FIGS. 1 and 2, the power transmitting means 50 includes a driving portion 52 and a follower portion 54. The drive unit 52 includes a drive chamber 52a having an inlet 52c and an outlet 52d connected to the first flow path 12 and a drive shaft 52a rotatably installed in the drive chamber 52a by a shaft 56, And a driving circuit 52b rotating by the discharged cooling water. The follower 54 has an inlet 54c connected to the cooling water discharge passage 34 by the first connection passage 36 and an outlet 54d connected to the cooling water inlet passage 32 And a slave tram 54b which is rotatably installed in the slave chamber 54a by the shaft 56. The slave tram 54b is connected to the slave station 54a.

When the cooling water flowing through the first flow path 12 flows into the drive chamber 52a through the inlet 52c of the drive chamber 52a and the drive circuit 52b rotates due to the inflow pressure, (56) also rotates together and the slave trams (54b) also rotate in accordance with the rotation of the shaft (56). The cooling water discharged from the heater core 30 and flowing through the cooling water discharge flow passage 34 is supplied to the first connection passage 36 and the inlet 54c of the slave chamber 54a by the suction force generated by the rotation of the sub- And then discharged through the outlet 54d of the slave chamber 54a by the pumping action of the rotating slave tram 54b so as to be discharged through the second connection passage 38, It is possible to return to the heater core 30 via the reservoir 40 and the cooling water inlet flow path 32. [ That is, the cooling water flowing through the second flow path 31 is circulated by the flow pressure of the cooling water flowing through the first flow path 12. The cooling water introduced into the drive chamber 52a is discharged through the outlet 52d of the drive chamber 52a by the rotation of the drive circuit 52b and returned to the engine 10 along the first flow path 12 .

The cooling water flowing in the first flow path 12 does not flow toward the second flow path 31 and the second flow path 31 flows into the cooling water inserting reservoir The high-temperature cooling water stored in the heat exchanger 40 is circulated so as to increase the heating efficiency at the initial stage of engine startup.

That is, the portion of the second flow path 31 connected to the first flow path 12 (specifically, the portion between the first flow path 12 and the connection flow paths 36 and 38, The first intermittent valve 60 and the second intermittent valve 62 are sequentially installed in the first passage portion 34a and the second passage portion 34b. The intermittent valves 60 and 62 have an electromagnet 64 as shown in FIG. 3. The electromagnet 64 receives a signal from an electronic control unit (not shown) under a predetermined setting condition, It may be adopted that the flow path is opened or closed.

For example, the temperature of the cooling water flowing through the first flow path 12 (which may be sensed by a water temperature sensor constituting the cooling system, for example) is higher than the cooling water temperature of the second flow path 31, 12 can be controlled so that the intermittent valves 60, 62 open when the temperature of the cooling water flowing through the intermittent valves 12, 12 is equal to or higher than a predetermined set temperature. The shutoff valves 60 and 62 can be controlled to be closed when the temperature of the cooling water flowing through the first flow path 12 is below the set condition. Alternatively, the shutoff valves 60 and 62 may be closed and operated to open for a certain period of time after startup.

Next, the operation of the heating system for an automobile having the improved initial heating performance according to the present invention configured as described above will be described.

4, when the cooling water temperature flowing through the first flow path 12, for example, is lower than the cooling water temperature of the second flow path 31 at the beginning of startup, when the shut-off valves 60 and 62 are closed, The cooling water flowing through the first flow path 12 does not flow into the second flow path 31. [ In this state, when the cooling water flowing in the first flow path 12 flows into the inlet 52c of the drive chamber 52a, the drive circuit 52b is rotated by the inflow pressure and the rotation of the drive circuit 52b, (56). The cooling water introduced into the drive chamber 52a by the rotation of the drive circuit 52b is discharged through the outlet 52d of the drive chamber 52a and returned to the engine 10 via the first flow path 12.

On the other hand, when the shaft 56 of the power transmission means 50 is rotated by the flow pressure of the cooling water flowing through the first flow path 12, the tail tram 54b of the follower portion 54, And a suction force is generated by the rotation of the sub train tanks 54b. The cooling water discharged from the heater core 30 by the suction force flows into the slave chamber 54a through the inlet 54c of the slave chamber 54a via the cooling water discharge passage 34 and the first connection passage 36 Is discharged through the outlet 54d of the slave chamber 54a by the pumping action of the slave tram 54b which rotates along the shaft 56 and flows through the cooling water warming reservoir 40 and the cooling water inlet flow path 32, And returns to the core 30. Therefore, the high-temperature cooling water circulates in the second flow path 31. [ The high-temperature cooling water is heat-exchanged with the blowing air in the heater core 30, so that the blowing air is changed into a warmer, and the warming effect flows into the interior of the automobile.

When the temperature of the engine 10 gradually rises and the temperature of the cooling water flowing through the first flow path 12 becomes higher than the cooling water temperature of the second flow path 31, ) Is open. 5, the high-temperature cooling water discharged from the engine 10 flows along the first flow path 12 and flows through the first intermittent valve 60 and the cooling water inserting passage 32 provided in the cooling water inlet flow path 32, (40) to the heater core (30) and can be heat-exchanged with the blowing air. The cooling water that has been heat-exchanged while passing through the heater core 30 is discharged to the cooling water discharge flow path 34 and returned to the engine 10 along the first flow path 12 via the second intermittent valve 62. It can be considered that a part of the cooling water flowing out of the engine 10 and flowing along the first flow path 12 flows toward the driving part 52 during the cooling water returning process, All of the refrigerant flows to the second flow path 31 through the first intermittent valve 60 without passing through the driving part 52 due to the flow path resistance of the driving circuit 52b. Therefore, the cooling water passing through the second flow path 31 is also supplied to the engine (not shown) via the second flow rate valve 62 and the first flow path 12 without passing through the follower part 54, 10). ≪ / RTI > That is, in the present invention, when the intermittent valves 60 and 62 are opened after the heating at the initial stage of engine startup, the cooling water is circulated along the normal cooling water circulation path, so there is no problem in heating.

In the heating system for an automobile having the improved initial heating performance according to the present invention configured as described above, the cooling water discharged from the engine 10 at the initial stage of startup is shut off so as not to flow into the second flow path 31, By allowing the high-temperature cooling water stored in the warm-up storage unit 40 to circulate through the second flow path 31, the rapid heating efficiency at the initial startup can be effectively increased.

Further, by employing the power transmission means 50 of a simple and mechanical structure driven by the pressure transmission force of the existing water pump without employing a separate water pump, power for driving the power transmission means 50 is separately demanded And the installation cost can be reduced.

Claims (5)

A first flow path for returning cooling water discharged from the engine to the engine by a water pump; A second flow path having a cooling water inlet flow path connecting the first flow path and the heater core to supply cooling water to the heater core and a cooling water discharge flow path connecting the first flow path and the heater core to send cooling water discharged from the heater core to the engine side, ; Power transmission means connected to the first flow path and connected to the second flow path by the first connection flow path and the second connection flow path to circulate the cooling water of the second flow path by the inflow pressure of the cooling water flowing through the first flow path; A cooling water inserting reservoir installed in the cooling water inlet passage for storing and discharging cooling water; And, And two intermittent valves which are sequentially installed at a portion connected to the first flow path of the second flow path and open or close the flow path under a predetermined setting condition. The method according to claim 1, The power transmitting means includes: A drive chamber having an inlet and an outlet connected to the first flow path and a drive circuit having a drive circuit that is rotatably installed in the drive chamber by a shaft and rotates by cooling water flowing in and out, An outlet is connected to the cooling water discharge passage by the first connection passage, an outlet is connected to the cooling water inlet passage by the second connection passage, and a bellmouth train rotatably built in the bellows by the shaft, And a driven portion for circulating the cooling water of the second flow path. The method according to claim 1, Wherein the control valves are respectively controlled to be in the open operation state when the cooling water temperature of the first flow path is higher than the cooling water temperature of the second flow path in the closed operation state. The method according to claim 1, Wherein the control valves are respectively controlled to be in an open operation state after a certain period of time after the engine is started in a closed operation state. The method according to claim 1, Wherein the intermittent valves are controlled to be in an open operating state when the temperature of the cooling water in the first flow path is higher than a predetermined temperature in a closed operation state.

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