JPS62110512A - Air conditioner for vehicle - Google Patents

Abstract

PURPOSE:To secure such a function as, say, keeping the head cool and the feet warm with a simple structure, by installing a movable damper for setting each air quantity rate of plural spit holes, at the downstream of a mix chamber as well as installing and elevating surface part, opening or closing a bypass circuit, in a movable end of this movable damper. CONSTITUTION:Opening of mix damper 1 is regulated whereby flow rate percentage between air which passes through a heat exchanger 2 and another sir which does not pass through it is varied, setting the blowoff temperature. Also opening of a movable damper 3 installed in an elevating surface part 8 is regulated and either of a face spit hole 5 or a foot spit hole 6 or both are selected. In addition, in order to give such a function that keeps the head cool and the feed warm to these holes, there is provided with a bypass circuit 7, whereby cold air passing through this bypass circuit 7 is made to flow into the face spit hole 5, giving a temperature difference to the foot spit hole 6. For example, when the movable damper 3 is situated in the BI-LEBEL position shown in a one-point chain line, the cold air out of the bypass circuit 7 and a part of hot air out of a mix chamber 4 are mixed together and blown out of the face spit hole 5, and from the foot spit hole 6, the hot air alone is blown off.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a vehicle air conditioner that controls the temperature inside a vehicle interior.

BACKGROUND OF THE INVENTION In recent years, in vehicle air conditioners, users' demands for comfort in the cabin of a vehicle have increased, and fine air conditioning control has become necessary. If you simply warm up the interior of the vehicle during heating, the upper part of the interior, which is affected by sunlight, will become hot and cause discomfort such as making the user sleepy or feel sick, so the head will be cold and the feet will be cold. There is a demand for warmth, a so-called feeling of having a cold head and warm feet, and in recent years, vehicle air conditioners that have a function to control cold head and warm feet have begun to be developed.

An example of the conventional vehicle air conditioner mentioned above will be described below with reference to the drawings.

FIG. 3 is a system diagram showing an outline of head cold/foot heat control in a conventional vehicle air conditioner. As shown in the figure, the temperature of the blown air is controlled by moving the mix damper 11. It is a 12-piece heat exchanger. 13 is a movable damper that selects the outlet. A bypass circuit 14 bypasses the movable goomba 11, the heat exchanger 12, and the movable damper 13. 16 is an air outlet for the face;
17 is an air outlet to the feet. Further, 15 is a movable tapper that opens and closes the bypass circuit 14.

The operation of the heater unit configured as described above will be explained below.

The opening degree of the mix damper 11 determines the air volume ratio between the air passing through the heat exchanger 12 and the air not passing through the heat exchanger 12, thereby determining the blowout temperature. Further, by adjusting the opening degree of the movable goomba 13, the air outlet can be selected as the face air outlet 16, the foot air outlet 17, or both. In addition, a bypass circuit 14 is provided in order to add a so-called head cold and foot heat function, and by adjusting the opening degree of the movable goomba 15, the cold air passing through the bypass circuit 14 flows to the face outlet 16, and the temperature of the foot outlet 17 and the temperature However, in such a configuration, a movable damper 15 is newly installed in order to add a function of so-called cold feet and cold feet, and in order to open and close the movable damper 15, A special wire cable or transmission or drive parts such as a motor or actuator are required to link the operation unit, and the operation unit can also be used! It is necessary to add a dedicated function for operating with the 111 damper 15, which increases the cost. In addition, space is required for the wire cable, motor or actuator, and the inner cone is easily attached when installed. Also, from the user's perspective, in addition to the conventional operation modes such as operating the temperature lever to determine the width of the room, operating the vent lever to select the air outlet, and operating the 7-notch button to determine the air flow h5, it is now necessary to operate the movable damper 15 to keep the head cold and the feet warm. In recent years, the increasing complexity of air conditioning adjustment methods has become a major problem as simple operations are required.

In view of the above-mentioned problems, the present invention eliminates the movable damper 15, eliminates the dedicated wire cable and related parts, and adds the cold-head-foot-heat function, although it has the head-cold-foot-heat function, and adds complexity to the operation. The purpose of the present invention is to provide an air conditioner having a configuration that does not involve.

Means for Solving the Problems In order to solve the above problems, the air conditioner of the present invention has an air intake port for taking in wind upstream, and a ventilation duct that has a plurality of branched air outlets downstream. , a blower device for sending out air is provided, a heating heat exchanger is provided in one cross section of the ventilation duct on the F flow side of the blower device, and the air flowing through the heat exchanger bypasses the heat exchanger. A mixer is provided for controlling the air temperature inside the vehicle, and further mixes the air flowing through the heat exchanger and the air flowing bypassing the heat exchanger downstream of the heat exchanger. A mix damper is provided, and further downstream of the mix damper, a pre-damper is provided for determining the air volume ratio of each outlet of the ntl storage number. Equipped with
In addition, a bias circuit is provided between the upstream of the movable goomba for controlling the vehicle interior temperature marked Kf'jQ and the movable goomba for determining the Ia amount ratio of the air outlet described in 11fI, and furthermore, a bias circuit is formed between the upstream of the movable goomba for controlling the vehicle interior temperature described in Kf'jQ, and the air volume ratio of the air outlet described in 6fi is determined. A movable damper for determining Af is provided with an arc-shaped elevation portion centered on the rotation axis, and is configured to cut off or open the bypass circuit.

Effect: With the above-described configuration, the present invention does not require the installation of a new movable damper to cut off or open the bypass circuit for so-called cold head and foot heat, and only provides an elevational portion at one end of the movable damper that determines the volume ratio of the air outlet. This doubles as the opening/closing function of the bypass circuit, and the structure can be simpler than the conventional one. That is, it is possible to eliminate the use of a dedicated bypass damper, dedicated wire cable, motor, or actuator, resulting in lower costs. Workability has been improved when wearing the air conditioner, and from a user's perspective, it is possible to obtain a cooling effect on the head and feet by simply operating the vent lever to select the air outlet.
Easy to operate.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An air conditioner according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a system diagram showing an outline of head cold foot heat control of a vehicle air conditioner according to the present invention. In Figure 1, 1 is a mix damper that controls the temperature of the air being blown out, 2 is a heat exchanger, 3 is a movable damper that selects the air outlet, 4 is a mix chamber that mixes the air, 5 is a face air outlet, and 6 is a foot air outlet. It is the exit. A bypass circuit 7 bypasses the mix damper 1, heat exchanger 2, and mix chamber 4 and is connected to the face outlet. Reference numeral 8 is an elevated surface provided at one end of the movable damper 3, and is configured to cut off or open the bypass circuit 7.

FIG. 2 is a schematic diagram showing the operation section. 9 is a temperature lever that is linked to mix damper 1.

10 is a vent L/bar which is interlocked with the movable lever 3.

The operation of the vehicle inspection air conditioner, which is drawn as shown in Figure 2, is explained below. Depending on the opening degree of the mix damper 1, the air that passes through the heat exchanger 42 and the air that does not pass through the heat exchanger 2 are divided. The air volume (ratio) is determined to determine the amount of air to be blown each time.Also, by adjusting the opening degree of the movable damper 3, the air outlet can be selected from the face outlet 5, the foot outlet 6, or both. In order to add functions, a bypass circuit 7 is provided, and by adjusting the opening degree of the movable damper 3, the cold air flowing up the bypass circuit 7 flows to the face outlet 5, and the foot outlet 6 and the γ difference are adjusted each time to achieve the 6 functions. In other words, the position shown by the solid line of possible 4σJ Gunba 3 (
A is when the mode lever 10 is at the VENT position 1N,
At this time, mix chamber 4's il,! Air with a temperature that is a mixture of air and cold air from the bypass circuit 7 is blown out from the face outlet 12, and the temperature shown by the broken line of the movable damper 3 is "A" when the mode lever 10 is in the HEAT or DEF position.
At this time, warm air from the mix chamber 4 is blown out from the foot outlet 6. The position of the soft movable damper indicated by the dashed line is when the mode lever 10 is at the BI-LEBEL position. In this case, the cold air from the bypass circuit 7 and a portion of the warm air from the mix chamber 4 flow from the face suita port 5. Mixed and blown out,
Only warm air from the mix chamber is blown out from the foot outlet 6. In addition, if you change the position of the damper 3 of Possible 1 little by little during B I-LEBEL, the mixing ratio of the cold air coming out of the face blower outlet 5 will change, so you can freely adjust the M1i degree difference between the face blower and the foot blower. It can be changed.

Effects of the Invention As described above, the present invention provides a heating heat exchanger in one cross section of the ventilation passage, and the wind flowing through the heat exchanger 011,
1) It is equipped with a movable damper for controlling the temperature inside the vehicle that bypasses the heat exchanger described in No. 11 and separates it into the airflow, and is further equipped with a chamber for mixing hot air and cold air downstream of the heat exchanger described in ff1f. A movable damper is provided downstream of the chamber to determine the wind ratio of each of the plurality of air outlets, and furthermore, a movable damper is provided for determining the air flow ratio of the air outlet from the ball flow of the vehicle interior temperature control damper. A bypass circuit is provided between the ωj dampers 1 and 7′V2, and an elevational surface is provided at one end of the movable damper for determining the air volume at the Suita outlet, and the bypass circuit is completely shut off or opened. By doing so, while having the function of cooling the head and keeping the feet warm, the structure can be simplified, the cost can be reduced, the installation workability is good, and the user's usability is also improved without the need to newly install 6-to-1 gussets. can.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a vehicle air conditioner according to an embodiment of the present invention. FIG. 2 is a schematic diagram of an air conditioning unit in the same embodiment, and FIG. 3 is a schematic diagram of a conventional vehicle air conditioning system. 1... mix damper, 2... heat exchanger,
3 of movement, 4...mix chamber,
5 face air outlet, 6 - foot air outlet, 7 ・Cold air bypass circuit i, El-...fLlfi1 part of movable damper, 9
Room temperature control lever, 10 Mode lever, 11 - Mix damper, 12 Heat exchanger, 13 - Possible damper, 14 - Cold air bypass circuit, 15 - Bypass 11
14: Closed damper, 16: Face outlet, 17: Foot outlet. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure/θ

Claims (1)

[Claims] A blower device for sending out wind is provided in a ventilation duct having an air intake port for taking in wind upstream and a plurality of branched outlet ports downstream, and a cross section of one of the blower ducts on the downstream side of the blower device is provided. A heating heat exchanger is provided in the heat exchanger, and a mix damper is provided for controlling the temperature inside the vehicle compartment, which separates air flowing through the heat exchanger and air flowing bypassing the heat exchanger. A mixing chamber is provided downstream for mixing the air flowing through the heat exchanger and the air flowing bypassing the heat exchanger, and further downstream of the mixing chamber, the air volume ratio of each of the plurality of air outlets is adjusted. A bypass circuit is provided between the upstream of the movable damper for controlling the vehicle interior temperature and a movable damper for determining the air volume ratio of the air outlet. An air conditioner for a vehicle, comprising an elevational portion at one end of a movable damper for determining an air volume ratio, and configured to cut off or open the bypass circuit.