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Air conditioner for vehicle

A technology for air-conditioning devices and vehicles, which can be used in vehicle components, applications, household heating, etc., and can solve problems such as the inability to filter and the decline in the collection capacity

Active Publication Date: 2022-07-08
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the vehicle air conditioner described in Patent Document 1, there is a possibility that the decrease in the collection capacity of the filter cannot be detected from the pressure detected by the pressure sensor.

Method used

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  • Air conditioner for vehicle
  • Air conditioner for vehicle
  • Air conditioner for vehicle

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach ＞

[0026] First, the first embodiment of the vehicle air conditioner will be described.

[0027] like figure 1 As shown, the vehicle air conditioner 1 of the present embodiment includes an air conditioner duct 10 and an air conditioner unit 20 . The vehicle air conditioner 1 is provided inside a dashboard of a vehicle.

[0028] Inside the air-conditioning duct 10, an air passage 11 is formed, and the air passage 11 guides the air-conditioning wind for air-conditioning the vehicle interior into the vehicle interior. In the air passage 11, the air flows in the direction indicated by the arrow A in the figure. An outside air intake port 12 and an inside air intake port 13 are formed in a portion on the upstream side of the air conditioning duct 10 in the air flow direction A as a portion for taking in air from the outside of the air conditioning duct 10 into the air passage 11 . The outside air intake port 12 is a portion that takes outside air, which is the air outside the vehic...

no. 2 approach ＞

[0087] Next, a second embodiment of the vehicle air conditioner 1 will be described. Hereinafter, the difference from the first embodiment will be mainly described.

[0088] The ECU 80 of the present embodiment replaces image 3 The shown filter capability determination process is executed when the vehicle air conditioner 1 starts to operate Figure 8 The filter capability determination process shown. That is, first, as the process of step S30 , the ECU 80 detects the first dust concentration CD20 based on the detection signal VD of the dust sensor 70 . The first dust concentration CD20 is the dust concentration detected by the dust sensor 70 when the operation of the vehicle air conditioner 1 is started. After that, the ECU 80 starts the measurement of the elapsed time Ta as a process of step S31. That is, the ECU 80 starts the measurement of the elapsed time Ta from the time when the first dust concentration CD20 is detected. Next, as the process of step S32, the ECU 80...

no. 3 approach ＞

[0100] Next, a third embodiment of the vehicle air conditioner 1 will be described. Hereinafter, the difference from the first embodiment will be mainly described.

[0101] The ECU 80 of the present embodiment replaces image 3 The shown filter capability determination process is executed when the operation of the vehicle air conditioner 1 starts Figure 10 The filter capability determination process shown. That is, first, as the process of step S40, the ECU 80 starts detection of the dust concentration CD40 based on the detection signal VD of the dust sensor 70, and starts the measurement of the elapsed time Ta as the process of step S41.

[0102] Thereafter, as a process of step S42, the ECU 80 determines whether or not the elapsed time Ta has exceeded the predetermined time Tth31. When an affirmative determination is made in the process of step S42, that is, when the elapsed time Ta exceeds the predetermined time Tth31, as the process of step S43, the ECU 80 determines t...

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Abstract

An object of the present invention is to provide an air conditioner for a vehicle capable of detecting a drop in the collection capability of a filter with high accuracy. A vehicle air conditioner (1) performs air conditioning in the vehicle interior by blowing air flowing in an air conditioning duct (10) into the vehicle interior. A vehicle air conditioner includes a filter (17), a dust sensor (70), and a determination unit (80). The filter captures the dust contained in the air flowing in the air conditioning duct. The dust sensor detects the dust concentration of the air flowing in the air conditioning duct. The determination unit determines whether or not the collection capability of the filter has decreased based on the dust concentration detected by the dust sensor.

Description

[0001] Cross-reference to related applications [0002] This application claims the benefit of priority based on Japanese Patent Application No. 2017-008781 for which it applied on January 20, 2017, and the entire content of this patent application is incorporated herein by reference. technical field [0003] The present invention relates to an air conditioner for a vehicle. Background technique [0004] Conventionally, there is an air conditioner for a vehicle described in Patent Document 1. The vehicle air conditioner described in Patent Document 1 includes a filter arranged between a blower and an air intake, and a pressure sensor arranged in a space between the blower and the filter. The pressure sensor detects the pressure in the space between the blower and the filter. In addition, the vehicle air conditioner described in Patent Document 1 includes a detection device that detects the degree of clogging of the filter based on a pressure detected by a pressure sensor, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60H3/06B01D46/42F24F11/62
CPCB01D46/44B01D2279/50B60H3/0616B60H2003/0683F24F11/63F24F11/39F24F2110/64Y02B30/70Y02A50/2351
Inventor 福永博之石山尚敬
Owner DENSO CORP
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