JPS5823243B2 - Heater unit structure of vehicle air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heater unit structure for a vehicle air conditioner.

As shown in FIGS. 1 and 2, the heater duct (heater duct in a conventional vehicle air conditioner) includes a heater core 1 that circulates cooling water heated by the engine in its casing 9, and an air volume that passes through the heater core 1. the vent door 4 that opens and closes the ventilator outlet 3, and the amount of warm air blown out to the heater outlet 5 and defroster outlet 6 toward the occupant's feet, or to the rear duct 7 leading to the rear seats. A ventilator outlet is provided in the casing 9 by integrally disposing a floor door 8 to mix the warm air passing through the heater core 1 and the cold air bypassing the heater core 1 inside the heater duct (H) to produce appropriately heated air. 3. The air is blown into the vehicle interior from the heater outlet 5, the defroster outlet 6, or the rear duct 7.

However, in the conventional heater unit H, the cold air from a cooling unit or a heater duct (not shown) is mixed with warm air that has passed through the heater core in order to make the air at an appropriate temperature within the casing 9, and then the above-mentioned heater unit H, which is opened on one side of the casing 9, is The air outlet 3, 5, and 6°7 are designed to be blown into the vehicle interior, but in order to bring the cool air from the cooling unit or heater duct to the appropriate temperature within the casing 9, various measures are required for each vehicle model. In addition, the position of the air outlet must be changed and remolded for each vehicle model depending on the surrounding conditions, so there are many problems in terms of production control, such as lack of versatility and complicated molding work. Was.

This invention was devised in view of the current situation, and its purpose is to merge and mix cold air from a cooling unit or heater duct and warm air that has passed through a heater core from substantially perpendicular directions or substantially opposite directions. A temperature control casing that discharges suitable temperature air in a direction substantially perpendicular to the cold air/warm air, and a ventilation casing formed separately from the temperature control casing that distributes this suitable temperature air into the vehicle interior. This allows for even more reliable mixing of cold and hot air without the need for any special efforts, and in addition, only the air distribution casing can be remolded instead of remolding the heater unit for each car model, which has a different blowout position for the appropriate humid air. And, by attaching this new air distribution casing to the temperature control casing, we provide a heater unit structure for a vehicle air conditioner that can form a heater unit that can be adapted to vehicles with different outlet locations for suitable humidity air. This is what I am trying to do.

A preferred embodiment of the present invention will be described below based on the accompanying drawings.

As shown in FIGS. 3 to 6, the structure of the heater unit H of this embodiment includes a temperature control casing 11 having a cold air outlet 10 connected to the outlet side of a cooling unit or heater duct (not shown), and It is composed of a ventilation casing 13 that distributes appropriately heated air blown out from a discharge port 12 of a temperature control casing 11 and blows it out into the vehicle interior.

Then, an air mix door 2 for controlling the amount of air passing through the heater core 1 disposed inside the temperature control casing 11 is installed toward its free end side or toward the cold air inlet 10, so that the temperature control casing 11 is opened from the cold air inlet 10. The upper wall 1 of the temperature control casing 11 is arranged so that the cold air that enters the air and bypasses the heater core 1 by the air mix door 2 collides with the side wall 14.
A cold air passage 16 is formed between the air mix door 5 and the air mix door 2, and the warm air that has passed through the heater core 1 by the air mix door 2 flows from the low wall 17 of the temperature control casing 11 to the side wall 1.
A heater unit H is provided in a mix chamber 19 where the cold air passage 16 and the hot air passage 18 merge from a perpendicular direction to each other, and these passages 16° 18 merge. A discharge port 12 is opened in the rear wall 20 located at the rear of the vehicle body when assembled to the vehicle body, and the discharge port 12 is formed in a direction perpendicular to the flow direction of the cold air and hot air to allow suitable temperature air mixed in the mix chamber 19. Further, this discharge port 12 is provided with a triangular baffle plate 23 protruding in the opposite direction to the flow direction of the suitable temperature air blown from the discharge port 12 on the hot air passage 18 side of the open end 22 thereof. .

In FIG. 6, reference numeral 24 indicates a shield door that opens and closes the hot air passage 18 in synchronization with the air mix door 2, and this shield door 24 closes the air inlet to the heater core 1 during cooling. When the hot air passage 18 is closed and the air mix door 2 divides the air toward the heater core 1 and the air that bypasses the heater core 1, the larger the amount of cold air that bypasses the heater core 1, the more the cold air becomes The system is designed to merge warm air from opposite directions.

The air distribution casing 13 has a defroster outlet 25 that opens upward at the upper end, a ventilator outlet 26 at the center near the upper end, and a ventilator outlet 26 that opens left and right at the lower end. The defroster has a heater outlet 2T that opens toward the rear of the vehicle body, and a rear heater outlet 28 that opens toward the rear of the vehicle body. A defroster door 21 is provided on either the side of the air outlet 25 or the side of the ventilator air outlet 26, or a defroster door 21 is provided to guide the air to both sides. A vent door 29 is provided to block the flow of suitable temperature air to either side of the vent door 29, and the suitable temperature air flowing into the distribution casing 13 from the discharge port 12 of the temperature control casing 11 is directed to either of the outlets 25°, 26.2γ. Or blows out from 28 into the passenger compartment.

In FIGS. 3 to 5, reference numeral 30 indicates a side ventilator air outlet provided on both side walls of the ventilator outlet 26. From this side ventilator air outlet 30, air is connected to both left and right ends of the instrument via a duct not shown. The system blows a suitable amount of humid air into the vehicle interior.

3 and 5, reference numeral 31 indicates one side wall of a second air mixture chamber 32 formed between the vent door 29 of the ventilation casing 13, the heater outlet 27, and the rear heater outlet 28. The pie level door 31 is pivotally supported by a hinge in an opening 34 opened at the lower part of the side wall 20 of the temperature control casing 11. 1 and which has not passed through the air mix chamber 19, the temperature of the warm air blown out from the heater outlet 2γ and the rear heater outlet 28 is made higher than the temperature of the suitable warm air blown out from the ventilator outlet 26. I try to create temperature conditions that keep my head cold and my feet warm.

Next, the function of this embodiment will be explained.Cold air inlet.

When the air mix door 2 is in the intermediate position, the cold air from the cooling unit or the heater duct that has flowed into the temperature control casing 11 from the air mix door 2 is divided into the air that bypasses the heater core 1 and the air that passes through the heater core 1. The cold air that bypassed the heater core 1 flows into the air mix chamber 19 through the cold air passage 16, and the hot air that passed through the heater core 1 flows through the hot air passage 1.
8 and enters the air mix chamber 19, where the cold air and warm air combine to form a suitable humid air. 13.

At this time, the cold air passage 16 and the hot air passage 18 merge at right angles to each other, and the discharge port 12 of the air mix chamber 19 opens further at right angles to these passages 16 and 18. The cold air, hot air, and air that have passed through the passages 16 and 18 collide with each other at right angles and merge, and furthermore, in the air mix chamber 19, the cold air and hot air flow in a direction perpendicular to the flow direction of the cold air and hot air. Since the flow direction is changed, the light is mixed with the appropriate temperature air and flows into the air distribution casing 13 from the rope outlet 12.

As shown in FIG. 5, the appropriately heated air mixed in the temperature control casing 11 is transferred by the defrost door 21 closing the defroster outlet 25 disposed in the air distribution casing 13, and by the vent door 29 closing the heater outlet 27 and When the rear heater outlet 28 is closed, air is blown out from the ventilator outlet 26 and the side vent outlet 30.

In addition, suitable temperature air flows through the vent door 29 through the ventilator outlet 26.
and the pie level door 31 is controlled to a position where it blows out from both the heater outlet 21 and the rear heater outlet 28, and the pie level door 31 is controlled in the opening direction so that the hot air that has passed through the heater core 1 is directed toward the second chamber 32. Then, the appropriate temperature air is distributed to the ventilator outlet 26 side, heater outlet 27, and rear heater outlet 28 side by the vent door 29, and the appropriate temperature air distributed to the heater outlet 2T and rear heater outlet 28 side is 2 Air mixture chamber 32 further mixes the warm air that has passed through the heater core 1 and sends it to the heater outlet 2.
7 and is blown out from the rear heater outlet 28.

Therefore, the temperature of the warm air blown out from the heater outlet 27 and rear heater outlet 28 side can be higher than the temperature of the suitable humid air blown out from the ventilator outlet 26 side, so that when heating the vehicle interior, the temperature of the warm air is higher than the temperature of the suitable humid air blown out from the ventilator outlet 26 side. Temperature conditions can be easily set.

As described above, this invention divides the casing of a heater unit into a temperature control casing and an air distribution casing, and in the temperature control casing, cold air and warm air are merged in an almost perpendicular direction inside the temperature control casing to form suitably heated air. The air distribution casing is bent almost at right angles to the cold air and hot air, for even better mixing. Compared to conventional heater units, there is no need to integrally mold the heater unit for each vehicle with a different outlet location, and only the outlet location of the ventilation casing can be attached to the outlet of the vehicle. Since it is only necessary to re-mold the heater unit in accordance with the corresponding specifications, the manufacturing process of the heater unit can be greatly simplified and labor-saving, and the manufacturing cost can also be reduced. It has many beneficial effects on management.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the structure of a conventional heater unit;
The figures are a sectional view taken along the line ■-■ in Fig. 1, Fig. 3 is a perspective view showing a temperature control casing and an air distribution casing of a heater unit structure in an embodiment of the present invention in a divided state, and Fig. 4. 5 is a sectional view taken along the line v-V in FIG. 4, and FIG. 6 is a sectional view taken along the line Vl-VI in FIG. 4. H... Heater unit, 1... Heater core, 2...
Air mix door, 11...Temperature control casing, 13.
...Air distribution casing, 25...Defroster outlet, 2
6... Ventilator outlet, 27... Heater outlet, 28... Rear heater outlet, 30... Side vent outlet, 21... Defroster door, 29... Vent door.

Claims (1)

[Claims] 1 The casing of the heater unit H is divided into a temperature control casing 11 and an air distribution casing 13, and a heater core 1 and an air mix door for controlling the amount of air passing through the heater core 1 are arranged in the temperature control casing 11, and the heater core A passage 16.18 is provided that allows the cold air that bypassed the heater core 1 and the warm air that passed through the heater core to merge from a substantially perpendicular direction or from substantially opposite directions, and these passages 16.18
The above-mentioned passages 1 are connected to the air mix chamber 19 where the
6.18 is provided with a discharge port 12 that bends cold air and warm air in a direction substantially perpendicular to
A baffle plate 23 is provided on the passage 18 side of No. 2, which protrudes in the opposite direction to the flow direction of the suitable temperature air blown out from the opening edge, and directs the suitable temperature air mixed in the air mix chamber 19 in the direction of the flow of cold air and hot air. In the air distribution casing 13 installed on the downstream side of the air outlet, there is a defroster that blows out the appropriately heated air that has been temperature-controlled in the temperature control casing 11 to a predetermined position in the vehicle interior. The air distribution casing 13 has an air outlet 25, a vent radar air outlet, a heater air outlet 27, etc., and is provided with an air distribution door 21, 29 for controlling the amount of air emitted from these air outlets. A heater unit structure for a vehicle air conditioner, characterized in that it can be installed freely.