KR100957323B1 - Automobile Heater Apparatus Having Variable Circulating Path - Google Patents

Abstract

The present invention relates to a heater device for a vehicle having a variable net environment path.

An engine having an inlet and an outlet to allow the cooling working fluid to enter and exit;

A heat generating means connected to the working fluid through the engine and the flow path and circulated by the heated working fluid and having an inlet and an outlet; And

A supply passage communicating the engine outlet with the heat generating means inlet, an auxiliary passage 210 connecting the heat generating means outlet with the discharge passage 212 communicating with the engine inlet;

An auxiliary heater 220 installed on the auxiliary flow path 210 to heat the working fluid;

A first flow path control valve 230 installed at a branch point of the supply flow path 211 and the auxiliary flow path 210 to open and close the flow path of the engine discharge port 112 and the auxiliary heater 220;

A second channel control valve 240 installed at a branch point of the discharge channel 212 and the auxiliary channel 210 to open and close the channel of the engine inlet 111 and the auxiliary heater 220;

Installed between at least one of the first flow control valve 230 and the heat generating means 120 or between the second flow control valve 240 and the heat generating means 120 to circulate the working fluid. Pump unit 250,

The auxiliary heater 220 of the flow path from the engine outlet 112 to the first flow control valve 230 of the supply flow path 211 and the second flow control valve 240 of the auxiliary flow path 210. Comprising a bypass portion 260 to communicate with each other, the cooling fluid of the engine 110 when the operating fluid flowing into the heat generating means 120 to the auxiliary heater 220 to the engine ( Auxiliary heating means 200 for circulating in the flow path that does not pass through 110 and after the warm-up of the engine 110 is circulated in the flow path through which the heat generating means 120 and the engine 110 communicate with each other; Provided is a heater device for a vehicle having a variable circulation passage comprising a.

Automotive, Heater, Engine, Coolant, Heater Core, Auxiliary Heating, PTC

Description

Automotive Heater Apparatus with Variable Pure Environment Path {Automobile Heater Apparatus Having Variable Circulating Path}

The present invention relates to a heater apparatus for a vehicle having a variable net environment path.

Generally, a cooling fluid (eg, "coolant") for cooling the engine is circulated in the vehicle, and the working fluid is heated in the engine and heats air flowing between the radiating fins of the heater core to warm the air in the interior of the vehicle. To be supplied.

That is, the working fluid is heated in the engine to a high temperature, the high temperature working fluid serves to warm the indoor air of the vehicle by heat exchange with the air flowing through the air flow path connected to the interior of the vehicle.

1 is a configuration diagram schematically showing a conventional heater device for automobiles.

As shown in FIG. 1, a conventional automotive heater apparatus includes an engine 11 that generates heat during operation, and cooling water flowing through the flow path 15 by being connected to the engine 11 via a flow path 15. Heated by the circulation of the engine 11 and the heater core 12 for supplying the cooled cooling water again, and the auxiliary heating means 13 installed between the engine 11 and the heater core 12 and And a water pump 14 for circulating the cooling water.

The heater core 12 is configured to heat the vehicle interior air by exchanging heat with ambient air while passing the inside of the high temperature coolant discharged from the engine 11, and has a structure such as a heat sink fin.

In addition, the low temperature cooling water passing through the heater core 12 is introduced into the engine 11 again by the water pump 14 and is heated again by passing through the engine 11 so that the high temperature cooling water is heated in the heater core. It has a circulation structure to be introduced into (12).

However, in the engine 11, since the cooling state of the engine lasts for a predetermined time during initial operation, the cooling water discharged from the engine 11 is still maintained at a low temperature, so that heat is generated in the heater core 12. This phenomenon is more severe in winter, so that passengers are not supplied with warm air for a certain period of time.

Therefore, by installing a separate auxiliary heating means (13) irrelevant to the engine heating in front of the heater core 12 to heat the coolant even before the engine is warmed up so that the warm air comes out of the heater core 12, the engine ( After 11) is warmed up, the operation of the auxiliary heating means 13 is stopped so that the heater core 12 generates heat only by the coolant discharged from the engine 11.

However, the conventional automotive heater apparatus as described above has an unreasonable structure in which the coolant heated by the auxiliary heating means passes through the heater core and then flows back into the cold engine, as shown in FIG. The coolant passing through the core is further cooled after passing through the engine, and it takes a long time to reheat the coolant to the auxiliary heating means and wastes unnecessary power.

That is, the conventional heater device for automobiles has a structure in which the coolant passing through the heater core passes through the engine unconditionally, and the heat efficiency is lowered, and the cooled coolant needs to be heated again to a predetermined temperature. There is a problem that requires power.

The present invention is to solve the problems described above, the object is to properly control the circulation path of the engine, the heater core and the auxiliary heating means to minimize the thermal loss to increase the thermal efficiency and the auxiliary heating means with a minimum of power It is possible to optimally control the heater device for automobiles by allowing them to operate.

In addition, even after the engine operation is completed, the coolant is circulated to the heater core by using the latent heat of the engine so that the warm air can be continuously supplied.

In order to solve the above-mentioned problems,

An engine having an inlet and an outlet to allow the cooling working fluid to enter and exit;

A heat dissipation means connected to the working fluid through the engine and the flow path and heat dissipated by the heated working fluid, the inlet and the outlet being provided;

It is connected to the engine and the heat generating means, and when the engine is cooled to heat the working fluid flowing into the heat generating means to be circulated to the passage that does not pass through the engine, and after the warm-up of the engine and the heat generating means Auxiliary heating means for allowing the engine to circulate in a flow path communicating with each other; Provided is a heater device for a vehicle having a variable circulation passage comprising a.

In addition, the auxiliary heating means, the auxiliary flow path for connecting the supply passage communicating the engine outlet and the heat generating means inlet, and the discharge passage communicating the heat generating means discharge and the engine inlet with each other;

An auxiliary heating element installed on the auxiliary passage to heat the working fluid;

A first flow path control valve installed at a branch point of the supply flow path and the auxiliary flow path to open and close the engine discharge port side and the auxiliary heater side flow path;

A second passage control valve installed at a branch point of the discharge passage and the auxiliary passage to open and close the engine inlet side and the auxiliary heater side passage;

And a pump unit installed between at least one of the first flow control valve and the heat generating means or between the second flow control valve and the heat generating means to circulate the working fluid.

In addition, the auxiliary heating means may be configured such that a flow path between the engine outlet port and the first flow path control valve in the supply flow path and a flow path from the second flow path control valve to the auxiliary heat generator in the auxiliary flow path communicate with each other. The pass section is formed.

In addition, the first flow control valve and the second flow control valve is characterized in that consisting of a three-way valve.

In addition, the auxiliary heater is characterized in that consisting of a PTC element.

In addition, the auxiliary heater, the first flow path control valve, the second flow path control valve, the pump unit is characterized in that each controlled by a control unit for receiving temperature information from the engine coolant sensor and the core temperature sensor.

Herein, the control unit controls the first flow path control valve and the second flow path control valve to open only the side path of the auxiliary heat generator when the engine is cooled, and controls the auxiliary heat generator and the pump unit to be turned on. It is characterized by.

The control unit may control the first flow path control valve to open only the auxiliary heater side flow path and the second flow path control valve to open only the engine side flow path when the engine coolant temperature is higher than the heat generating means discharge part temperature. The auxiliary heater may be turned on and the pump unit may be turned off.

The control unit controls the first flow path control valve and the second flow path control valve to open only the engine side flow path at the end of the engine warm-up, and controls the auxiliary heater and the pump unit to be turned off. Characterized in that.

The control unit may control the first flow path control valve and the second flow path control valve to open only the engine-side flow path when the engine is not operated, the auxiliary heater is turned off, and the pump part is turned on. It is characterized in that (ON).

According to the present invention, as the flow path of the heater device is optimally controlled, the thermal efficiency is improved, and in particular, the auxiliary heater is operated with a minimum power, thereby having a unique effect of saving energy.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a block diagram showing a closed circuit circulation process during the engine cooling of the heater device for a vehicle according to the present invention, Figure 3 is a block diagram showing the circulation process of the working fluid during engine warm-up, Figure 4 is a view of the working fluid at the end of the engine warm-up 5 is a block diagram showing a circulating process, and FIG. 5 is a block diagram showing a circulating process of an operating fluid and an operating state of each component when the engine is not operated, and FIG. 6 is a block diagram showing a control relationship according to the present invention.

First, referring to FIG. 2, the present invention is largely made up of an engine 110, a heat generating means 120, and an auxiliary heating means 200.

In the engine 110, an inlet 111 is formed at one side of the engine 110 and an outlet 112 is formed at the other side such that a cooling working fluid for cooling the engine 110 can be introduced and discharged.

Here, the working fluid refers to all fluids that can be used for the purpose of cooling the engine 110, for example, a mixture of water or water and an antifreeze at a predetermined ratio (hereinafter referred to as "cooling water"), and the like. Where possible, the working fluid is not limited to the coolant.

In addition, the engine 110 is provided with a water pump 113 to circulate the working fluid, the water pump 113 is the water during the operation of the engine 110 by the mechanical power transfer of the engine 110. The pump 113 also operates.

At this time, the engine 110 includes a conventional single engine such as a gasoline engine, a diesel engine, and a gas engine, but also includes a hybrid engine in which two different forms are merged. Commonly referred to as just the engine (110).

On the other hand, the heat generating means 120 is connected to the engine 110 and the flow path so that the working fluid is circulated, the working fluid heated by the engine 110 is passed around the heat generating means 120 Heat is dissipated through the heat exchange with the cooling fluid thus flowing into the engine 110 to cool the engine 110 again.

That is, since the heat generating means 120 cools the engine 110 and radiates heat to the surroundings, the heat generating means 120 may use the heat in various places. For example, the heat generating means 120 uses the heat of the heat generating means 120 in the vehicle interior. Can warm the air.

At this time, the heat generating means 120 may be made of various structures as necessary, but may also be implemented in the form of a heater core in order to use to warm the interior air.

In this way, in order for the exchange of heat with the surroundings while the heated working fluid passes through the heat generating means 120, an inlet 121 through which working fluid flows is formed on one side of the heat generating means 120, and the heat exchange operation is completed on the other side. A discharge part 122 through which the fluid is discharged is formed.

On the other hand, the auxiliary heating means 200 is connected to the engine 110 and the heat generating means 120 to communicate with each other, the auxiliary heating means 200 is a low temperature before the engine 110 is warmed up The working fluid is introduced to the heat generating means 120 to compensate for the heat dissipation means 120 not normally being heat dissipated, and the self-operation by an energy source operated separately from the operation of the engine 110. By heating the fluid, it is provided for the purpose of heat dissipation in the heat generating means 120 even before the warm-up of the engine 110.

Here, the auxiliary heating means 200 heats the working fluid introduced into the heat generating means 120 when the engine 110 is cooled, and the engine 110 when the working fluid is discharged from the heat generating means 120. By circulating in the bypass flow path that does not pass through, a closed circuit is formed between the heat generating means 120 and the auxiliary heating means 200 to prevent heat loss generated when the working fluid passes through the engine 110.

In addition, the auxiliary heating means 200 after the warm-up of the engine 110, the heat generating means 120 and the engine 110 to be circulated in the flow path in communication with each other by the working fluid heated by the engine 110 is the heat generated Heat dissipates in the means 120 and then flows back into the engine 110.

As shown in FIG. 2, the auxiliary heating means 200 includes an auxiliary passage 210, an auxiliary heater 220, a first passage control valve 230, a second passage control valve 240, and a pump unit 250. )

A flow path for communicating the engine outlet 112 and the heat generating means inlet 121 is referred to as a "supply flow path 211", and a flow path for communicating the heat generating means discharge part 122 and the engine inlet 111 is provided. It is referred to as "discharge channel 212", the auxiliary channel 210 is a channel for connecting the supply channel 211 and the discharge channel 212 to communicate with each other.

Accordingly, the supply passage 211 and the discharge passage 212 communicate with each other without passing through the engine 110 or the heat generating means 120 by the auxiliary passage 210.

In addition, the auxiliary heat generator 220 is installed on the auxiliary flow path 210 to heat the working fluid flowing in the auxiliary flow path 210, and the auxiliary heat generator 220 is connected to the engine 110. It is preferable that an electric heating element is generated when the power is supplied from the outside to generate heat regardless of the operation.

There may be various kinds of the sub-heater 220 generated by the power supply, in the embodiment of the present invention, the sub-heater 220 is implemented as a PTC heater made of a PTC element.

The PTC heater is mainly made of a positive temperature coefficient thermistor (PTC), which has a small change in temperature coefficient even if the temperature of the heater changes.

For reference, the PTC element will be described briefly. A heater made of a PTC element is made of a ceramic which is made of a ceramic which does not cause a fire even when the temperature is increased.

In addition, although the PTC heater is used as a dryer for drying a body or household goods, or various living appliances requiring heat, it is easy to control the heat emitted and is widely used in various industrial apparatuses.

In addition, the first flow path control valve 230 is installed at the branch point of the supply flow passage 211 and the auxiliary flow passage 210 to open and close the flow path of the engine outlet 112 side and the auxiliary heater 220 side. The flow path of the inflow part 121 of the heat generating means 120 in the first flow path control valve 230 is always in an open state.

That is, the flow path coming into the first flow control valve 230 from the engine outlet 112 side or the flow path coming into the first flow control valve 230 from the auxiliary heater 220 side of the first flow control valve 230. It is opened and closed by control.

In addition, the second flow path control valve 240 is installed at a branch point of the discharge flow path 212 and the auxiliary flow path 210 to open and close the flow path of the engine inlet 111 side and the auxiliary heater 220 side. In the second flow path control valve 240, the flow path of the outlet portion 122 of the heat generating means 120 is always in an open state.

That is, the flow path exiting toward the engine inlet 111 or the flow path exiting to the sub-heater 220 is opened and closed by the control of the second flow path control valve 240.

Here, the first flow path control valve 230 and the second flow path control valve 240 is formed of a three-way (Three Way) valve bar, when the electrical signal is input to these valves of the two flow paths of the opening and closing As a result, a flow path is made.

In addition, the pump unit 250 is located at least one of between the first flow control valve 230 and the heating means 120, or between the second flow control valve 240 and the heat generating means 120. As shown in FIG. 2, the force of the water pump 113 provided in the engine 110 does not reach the flow path, or as shown in FIG. 5, the engine 110 is turned off and the water pump 113 is turned off. Allows the working fluid to circulate even when not in operation.

Here, the pump unit 250 is preferably configured to be operated by an external power source in a configuration that operates independently of the engine 110.

On the other hand, the auxiliary heating means 200, the flow path from the engine 110, the outlet 112 of the supply passage 211 to the first passage control valve 230, and the of the auxiliary passage 210 It is preferable that a bypass portion 260 is formed to allow flow paths from the second flow control valve 240 to the auxiliary heater 220 to communicate with each other.

As shown in FIG. 3, the bypass unit 260 is warmed up when the engine 110 is warming up, that is, the engine 110 is not completely warmed up. When the working fluid passes through the engine 110 and then passes through the sub-heater 220 again, when the temperature of the outlet 122 is higher than the temperature of the outlet 122, the high-temperature working fluid passes through the heat generating means 120. .

That is, the state of FIG. 3 is in the on state in which the auxiliary heater 220 operates because the warming up of the engine 110 has not been completed.

The auxiliary heater 220, the first flow control valve 230, the second flow control valve 240, and the pump unit 250 are connected to the control signal of the controller 270 as shown in FIG. 6. The control unit 270 is controlled by the core temperature for measuring the temperature of the working fluid of the engine coolant sensor 114 and the outlet 122 of the heat generating means 120 and the engine coolant sensor 114 for measuring the coolant temperature of the engine 110. The temperature information of the working fluid is received from the sensor 123.

Therefore, when the coolant temperature of the engine 110 is equal to or lower than the set temperature, the controller 270 determines that the engine 110 is cooled, and as shown in FIG. The two-channel control valve 240 is controlled to open only the flow path toward the auxiliary heater 220, so that the working fluid is not circulated to the engine 110 while the auxiliary heater 220 and the pump unit 250 are controlled. Control to be ON.

In the state of FIG. 2, since the force of the water pump 113 of the engine 110 does not reach the circulating working fluid, the pump unit 250 is turned on so that the working fluid can be circulated, and the auxiliary heater 220 is provided. By heating the working fluid to heat the heat dissipation through the heat generating means 120 even in the engine 110 cooling state, which is particularly warm in the winter when the engine 110 warm-up time is long, It can be very useful.

On the other hand, the controller 270 is the first flow path control valve 230 when the warm-up of the engine 110 is in progress, that is, when the engine coolant temperature is higher than the temperature of the heat generating means discharge unit 122 as shown in FIG. ) Opens only the flow path of the auxiliary heat generator 220 and the second flow control valve 240 controls to open only the flow path of the engine 110 so that the operating fluid heated while passing through the engine 110 receives the bypass portion. It is heated once again in the auxiliary heater 220 through 260 to be supplied to the heat generating means 120.

Here, the auxiliary heat generator 220 has a small power since the auxiliary heat generator 220 reaches the target temperature even though the working fluid heats less by the amount of heat absorbed while the working fluid passes through the engine 110. Operation is possible.

In this case, the auxiliary heater 220 is turned on, and the pump unit 250 is controlled by the controller 270 to be off.

As shown in FIG. 4, when the warming-up of the engine 110 is completed, the controller 270 has both the first flow path control valve 230 and the second flow path control valve 240 at the engine 110 side. Only open control, and the auxiliary heater 220 and the pump unit 250 is controlled to be off.

At this time, since the working fluid reaches the target temperature sufficiently only by the heat of the engine 110, the auxiliary heater 220 is turned off, and the force of the water pump 113 extends to the working fluid circulating. 250) is also turned off.

Finally, as shown in FIG. 5, when the start of the engine 110 is turned off and the engine 110 is not operated, the control unit 270 controls the first flow control valve 230 and the second flow control valve ( 240 controls to open only the flow path toward the engine 110, which is the same as the state of FIG. 4, that is, the engine 110 is warmed up.

However, since the engine 110 does not operate, the force of the water pump 113 does not reach the working fluid so that the pump unit 250 is turned on so that the working fluid can be circulated, while the auxiliary heater 220 ) Is turned off so that the heat is generated by the heat generating means 120 after the working fluid is heated by the engine heat which still has latent heat.

As described above, the present invention has the advantage of heating the working fluid using latent heat of the engine 110 and warming the indoor air with the heated working fluid even when the engine 110 is turned off.

As mentioned above, although this invention was demonstrated in detail using the preferable Example, the scope of the present invention is not limited to the specific Example described, and the person of ordinary skill in the art is not limited within the scope of this invention. Substitution and modification of the components are possible, which also belongs to the rights of the present invention.

1 is a schematic view showing a conventional heater device for a vehicle;

2 is a configuration diagram showing a closed circuit circulation process during engine cooling of a heater device for a vehicle according to the present invention;

3 is a configuration diagram showing a circulating process of the working fluid during engine warm-up;

4 is a configuration diagram showing a circulating process of the working fluid at the end of engine warm-up;

5 is a configuration diagram showing an operating state of each configuration and the circulation process of the working fluid when the engine is inactive;

Figure 6 is a block diagram showing a control relationship in accordance with the present invention.

<Description of the symbols for the main parts of the drawings>

110: engine (hybrid engine) 111: inlet

112: outlet 113: water pump

120: heating means 121: inlet

122: outlet 200: auxiliary heating means

210: auxiliary flow passage 211: supply passage

212: discharge passage 220: auxiliary heater

230: first flow control valve 240: second flow control valve

250: pump portion 260: bypass portion

270 control unit

Claims (11)

delete delete An engine 110 provided with an inlet 111 and an outlet 112 so that the cooling working fluid enters and exits; A working fluid circulated through the engine 110 and a flow path and heat-dissipated by the heated working fluid, the heat generating means 120 having an inlet 121 and an outlet 122; And A supply passage 211 communicating with the engine outlet 112 and the heat generating means inlet 121 and a discharge passage 212 communicating with the heat generating means outlet 122 and the engine inlet 111 are mutually provided. Auxiliary flow path 210 connected to the through, An auxiliary heater 220 installed on the auxiliary flow path 210 to heat the working fluid; A first flow path control valve 230 installed at a branch point of the supply flow path 211 and the auxiliary flow path 210 to open and close the flow path of the engine discharge port 112 and the auxiliary heater 220; A second channel control valve 240 installed at a branch point of the discharge channel 212 and the auxiliary channel 210 to open and close the channel of the engine inlet 111 and the auxiliary heater 220; Installed between at least one of the first flow control valve 230 and the heat generating means 120 or between the second flow control valve 240 and the heat generating means 120 to circulate the working fluid. Pump unit 250, The auxiliary heater 220 of the flow path from the engine outlet 112 to the first flow control valve 230 of the supply flow path 211 and the second flow control valve 240 of the auxiliary flow path 210. Comprising a bypass portion 260 to communicate with each other, the cooling fluid of the engine 110 when the operating fluid flowing into the heat generating means 120 to the auxiliary heater 220 to the engine ( Auxiliary heating means 200 for circulating in the flow path that does not pass through 110 and after the warm-up of the engine 110 is circulated in the flow path through which the heat generating means 120 and the engine 110 communicate with each other; Heater apparatus for a vehicle having a variable circulation passage comprising a. 4. The heater apparatus of claim 3, wherein the first flow path control valve (230) and the second flow path control valve (240) comprise a three-way valve. 5. The heater apparatus of claim 3, wherein the auxiliary heater 220 is formed of a PTC element. 6. According to claim 5, The auxiliary heater 220, the first flow path control valve 230, the second flow path control valve 240, the pump unit 250 is the engine coolant sensor 114 and the core temperature sensor Heater apparatus for a vehicle having a variable circulation passage, characterized in that each is controlled by a control unit (270) for receiving temperature information from the (123). The method of claim 6, wherein the control unit 270, When the engine 110 is cooled, the first flow path control valve 230 and the second flow path control valve 240 are controlled to open only the side path of the auxiliary heat generator 220, and the auxiliary heat generator 220 and the pump. Car heater apparatus having a variable circulation passage characterized in that the control unit 250 is turned on (ON). The method of claim 6, wherein the control unit 270, When the coolant temperature of the engine 110 is higher than the temperature of the outlet 122 of the heat generating means 120, the first flow path control valve 230 opens only the side path of the auxiliary heater 220, and controls the second flow path. The valve 240 is controlled to open only the flow path to the engine 110, the auxiliary heater 220 is turned on (ON) and the pump unit 250 has a variable circulation passage characterized in that (OFF) OFF (OFF) Automotive heater. The method of claim 6, wherein the control unit 270, When the warm-up of the engine 110 ends, the first flow path control valve 230 and the second flow path control valve 240 are controlled to open only the flow path toward the engine 110, and the auxiliary heater 220 and the Heater device for a vehicle having a variable circulation flow path characterized in that the pump unit 250 is controlled to be turned off (OFF). The method of claim 6, wherein the control unit 270, When the engine 110 is not operated, the first flow path control valve 230 and the second flow path control valve 240 are controlled to open only the flow path toward the engine 110, and the auxiliary heater 220 Heater device for a vehicle having a variable circulation passage characterized in that the OFF (OFF) and the pump unit (ON). The method of claim 3, wherein The engine is a heater device for a vehicle having a variable circulation flow path, characterized in that the hybrid engine.

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