JPH0586614U - Heat storage type heater device - Google Patents

Abstract

(57) [Abstract] [Purpose] You can freely set the heat capacity of the regenerator, and
To provide a heat storage type heater device having a cooling water circulation circuit of a simple structure that does not require valve control or the like. [Configuration] An engine cooling water side heater core 3 for exchanging heat between the engine cooling water and the blower air B, and a regenerator side heater core 7 for exchanging heat between the hot water in the regenerator 5 and the blower air The heater-side heater core 7 is disposed inside the heater unit 2 so that the heater-side heater core 7 is located downstream of the engine cooling water-side heater core 3 in the blower air. Simultaneously with the start of the engine 1, the circulating water pump 6 is operated to circulate the hot water kept warm in the heat storage device 5. While the engine cooling water is cold, the blower air is warmed by the regenerator side heater core 7 through which warm water flows. After the water temperature of the engine cooling water rises, the blower air is warmed by the engine cooling water side heater core 3 and the regenerator side hot water is heated by the regenerator side heater core 7. The heat storage unit 5 is the heater unit 2
Since it is placed outside, the size can be set freely.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat storage type heater device used for heating an automobile or the like.

[0002]

[Prior Art]

 A heater device for heating an automobile is generally a hot water heater device that uses heat of engine cooling water as a heat source. In recent years, a heat storage heater device has been developed in which a heat storage device is added to such a hot water heater device. This is because a large amount of heat generated when the engine is under heavy load is stored in a regenerator, and the stored heat is released when the cooling water temperature is low and the heating effect does not increase much at the time of starting or idling. By doing so, the heating effect is improved.

FIG. 2 is a diagram showing an outline of a first conventional example of a heat storage type heater device. In FIG. 2, 1 is an engine, 2 is a heater unit, 5 is a heat accumulator, 9 is a heater core, 10 is a circulating water pump, 11 to 14 are heater hoses, and 15 and 16 are valves. The heater core 9 heats the blower air B by exchanging heat between the hot water flowing therein and the blower air B.

In this heat storage type heater device, the valves 15 and 16 are closed when the engine 1 is stopped. Then, for a while after the engine 1 is started, the operation is performed with the valves 15 and 16 closed. At that time, the engine cooling water does not flow into the heater core 9 because the flow paths to the heater core 9 are blocked by the valves 15 and 16.

On the other hand, after the engine 1 is started, while the valves 15 and 16 are closed, the circulating water pump 10 is operating, and the hot water stored / heat-retained by the heat storage device 5 passes through the heater core 9. Circulate. In that case, the warm water flows through the heater hoses 11 and 12 in the direction indicated by the solid arrow X. When the warm water flows into the heater core 9, heat is exchanged in the heater unit 2 to warm the blower air indicated by the arrow B, and the warm air is blown into the vehicle interior.

After that, when the cooling water temperature of the engine 1 rises, the valves 15 and 16 are opened and the circulating water pump 10 is stopped at the same time. After that, the cooling water heated by the heat of the engine 1 flows through the heater hoses 13, 12, and 14 in the direction indicated by the dotted arrow Y, and warms the blower air B in the heater core 9. At the same time, the high temperature cooling water is filled in the heat storage unit 5.

According to the first conventional example, the heat storage effect can be obtained by the heat storage device 5, and the heating temperature can be quickly raised at the time of starting or the like. However, in this method, the cooling water circulation circuit is shared between the engine side and the regenerator side, which complicates the circuit and requires a control device for the valve because it uses a valve. There is a problem that

As a heat storage type heater device that eliminates such problems, there are the following ones. FIG. 3 is a diagram showing an outline of a second conventional example of the heat storage type heater device. The reference numerals correspond to those in FIG. In this device, a heat storage body that absorbs heat and radiates heat according to the phase change of melting and solidification is built in the heat storage unit 5 and is housed in the heater unit 2 together with the heater core 9. In the heater unit 2, the heat storage unit 5 is arranged on the heater core 9 downstream of the blower air B. In some cases, a heating wire (not shown) is built in the heat storage device 5 in preparation for when the heat storage amount of the heat storage device 5 is insufficient.

In this heat storage type heater device, when the engine 1 is started, the engine cooling water circulates in the arrow direction through the heater hoses 13 and 14. Immediately after starting, the engine cooling water is still in a cold state, and the blower air B is not warmed in the heater core 9, but the heat accumulator 5 on the downstream side has heat due to the heat storage effect of the heat storage body. , Heated there. As a result, hot air is blown from the heater outlet immediately after the engine is started. Further, in the case where the heating wire is built in the heat storage unit 5, when the heat radiation from the heat storage unit 5 is insufficient, heating is performed by the heating wire to make up for the shortage.

When the temperature of the engine cooling water rises shortly after the engine 1 is started, the heater core 9 starts warming the blower air B. Then, when the temperature of the blower air B heated by the heater core 9 becomes equal to or higher than the temperature of the heat storage device 5, the heat storage device 5 starts to absorb heat from the blower air B, and finally, Stores heat until it reaches the same temperature as the engine coolant temperature. The stored heat is kept warm even after the engine is stopped to prepare for the next engine start.

In this second conventional example, the circulation circuit of the cooling water has only one circuit and the circuit is simple. Further, since the valve is not used, its control device is not necessary. As conventional documents relating to such a heat storage type heater device, there are, for example, Japanese Utility Model Publication No. 55-178411 and Japanese Utility Model Publication No. 56-308.

[0012]

[Problems to be solved by the device]

 (Problem) However, in the above-described conventional technology in which the heat storage body is incorporated in the heat storage device 5, since the heat storage device 5 is housed in the heater unit 2, the volume of the heat storage device 5 is restricted, and the heat capacity thereof is reduced. There was a problem that could not be made too large.

(Explanation of Problems) The size of the heater unit 2 is limited due to the fact that the heater unit 2 is arranged in the vehicle compartment. Therefore, the volume of the heat storage device 5, which must be housed in the heater unit 2, cannot be increased so much. As a result, the heat capacity of the heat accumulator becomes smaller, and the heat radiation time from the heat accumulator becomes shorter. Therefore, an auxiliary heat source such as an electric heater is sometimes needed. The present invention aims to solve the above problems.

[0014]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, in the heat storage type heater device of the present invention, a heat medium circulation circuit independent of the engine cooling water side heater core for exchanging heat between the engine cooling water and the blower air and the circulation circuit of the engine cooling water. And a regenerator-side heater core that is installed downstream of the engine cooling water side heater core in the blower air and exchanges heat between the heat medium in the regenerator and the blower air. ..

[0015]

[Work]

 It is the regenerator side heater core that is housed in the heater unit together with the engine cooling water side heater core, and the regenerator itself is placed separately from the heater unit, so there is no restriction on the size of the regenerator. , The heat capacity of the regenerator can be set freely. Therefore, the heat capacity of the heat accumulator can be sufficiently secured, and it is not necessary to provide an auxiliary heat source such as an electric heater. Further, since the circulation circuit of the engine cooling water and the circulation circuit of the heat medium on the regenerator side are independent of each other, the structure of each circulation circuit is simple, and a valve for switching the circulation circuit is not required. Becomes As a result, the valve controller is no longer needed.

[0016]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing an outline of a heat storage type heater device of the present invention. Reference numerals correspond to those in FIG. 2, 3 is an engine cooling water side heater core, 4 and 8 are heater hoses, 6 is a circulating water pump, and 7 is a regenerator side heater core.

The engine cooling water side heater core 3 performs heat exchange between the engine cooling water and the blower air B to warm the blower air B. On the other hand, water is circulated by a circulating water pump 6 in a circuit on the heat storage device 5 side, which is a circuit separate from the circulation circuit on the engine cooling water side. The heater core 7 is installed in the heater unit 2 at a position downstream of the blower air B, and heat exchange between the water in the circuit and the blower air B is performed there.

Next, the operation of this heat storage type heater device will be described. At the same time when the engine 1 is started, the circulating water pump 6 is operated. As a result, after the engine 1 is started, hot water in the heat storage device 5 circulates in the heat storage device-side heater core 7 through the heater hose 8. At that time, the engine cooling water is still in a cold state, and the blower air B is not warmed in the engine cooling water side heater core 3, but the blower air B is not cooled in the regenerator side heater core 7 on the downstream side. The blower air B is warmed there because the warm water that had been kept warm in the circulation. As a result, hot air is blown from the heater outlet immediately after the engine is started.

When the temperature of the engine cooling water rises shortly after the start of the engine 1, the engine cooling water side heater core 3 starts warming the blower air B. When the temperature of the blower air B warmed by the engine cooling water side heater core 3 becomes equal to or higher than the temperature of the hot water circulating in the heat storage side heater core 7, the heat storage side heater core 7 is removed from the blower air B. It begins to absorb heat, and finally the temperature inside the heat storage device 5 is made equal to the engine cooling water temperature.

When the engine 1 is idling and the temperature of the cooling water drops and the heating is not effective enough, the hot water circulating in the regenerator 5 side is passed through the regenerator side heater core 7. Supply heat. In the heat accumulator 5, the accumulated heat is kept warm even after the engine is stopped.

In this way, a large amount of heat generated when the engine is under heavy load is stored in the heat accumulator, and the heat is stored when the cooling water temperature is low and the heating effect is not so high at the time of starting or idling. It is possible to improve the heating effect by releasing the stored heat. In the above embodiment, water was used as the heat medium that circulates in the circuit on the side of the regenerator 5, but since the circulation circuit on the side of the regenerator 5 is independent of the circuit for circulating engine cooling water, Any heating medium other than can be used.

[0022]

[Effect of the device]

 As described above, the heat storage type heater device of the present invention has the following effects. It is the regenerator side heater core that is housed in the heater unit together with the engine cooling water side heater core, and the regenerator itself is placed separately from the heater unit. Therefore, the heat capacity of the heat accumulator can be freely set without being restricted by the size of the heat accumulator. Therefore, the heat capacity of the heat accumulator can be sufficiently secured, and it is no longer necessary to provide an auxiliary heat source such as an electric heater. Further, unlike the first conventional example of FIG. 2, the circulation circuit of the engine cooling water and the circulation circuit of the heat medium on the regenerator side are independent of each other, so that the structure of each circulation circuit is simple, Moreover, the valve for switching the circulation circuit is no longer necessary. As a result, the valve controller is no longer needed.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of a heat storage type heater device of the present invention.

FIG. 2 is a diagram showing an outline of a first conventional example of a heat storage type heater device.

FIG. 3 is a diagram showing an outline of a second conventional example of a heat storage type heater device.

[Explanation of symbols]

1 ... Engine, 2 ... Heater unit, 3 ... Engine cooling water side heater core, 4, 8, 11-14 ... Heater hose, 5 ... Regenerator, 6, 10 ... Circulating water pump, 7 ... Regenerator side heater core, 9 ... Heater core, 15, 16 ... Valve

Claims (1)

[Scope of utility model registration request] 1. An engine cooling water side heater core for exchanging heat between engine cooling water and a blower air, a heat storage device having a heat medium circulation circuit independent of a circulation circuit for engine cooling water, and an engine cooling water side heater. A regenerative heater device, comprising a regenerator-side heater core that is installed on the downstream side of the blower air with respect to the core and that performs heat exchange between the heat medium in the regenerator and the blower air.