CN-122029063-A - Air conditioning device

CN122029063ACN 122029063 ACN122029063 ACN 122029063ACN-122029063-A

Abstract

In an air conditioner provided with a heat exchanger, the performance degradation of the heat exchanger with the time is suppressed. The HVAC system (1) is provided with a heat exchanger (3) for performing heat exchange between exhaust gas discharged to the outside of a vehicle compartment and outside air introduced into the vehicle compartment, and a case (5) formed with an exhaust passage (5A) for guiding the exhaust gas to an exhaust gas inlet (3A) of the heat exchanger (3), an outside air passage (5B) for guiding the outside air to an outside air inlet (3B) of the heat exchanger (3), an air return passage (5C) for bypassing the heat exchanger (3) and circulating return air in the vehicle compartment, and an exhaust port (5D) for discharging the exhaust gas after passing through the heat exchanger (3) to the outside of the vehicle compartment. The HVAC system (1) further comprises a filter (7) disposed on the upstream side of the exhaust gas inlet (3A) and the outside air inlet (3B) of the heat exchanger (3) so as to extend across at least the exhaust gas channel (5A) and the outside air channel (5B) of the exhaust gas channel (5A), the outside air channel (5B) and the return air channel (5C), and a damper (9) for adjusting the amount of outside air introduced into the vehicle interior by changing the aperture ratio of the outside air channel (5B) and the return air channel (5C) on the upstream side of the filter (7).

Inventors

HOKARI MASAYUKI
INABA HIDEO
Pei Xiangzhe
KASUYA JUNICHIRO
Ban Yehuang

Assignees

三电株式会社

Dates

Publication Date: 20260512
Application Date: 20240913
Priority Date: 20231023

Claims (5)

1. An air conditioning apparatus, wherein, The air conditioning device is provided with: a heat exchanger that exchanges heat between exhaust gas discharged from a vehicle interior to an outside of the vehicle interior and outside air introduced from the outside of the vehicle interior to the inside of the vehicle interior; A housing having an exhaust passage for guiding the exhaust gas to an exhaust gas inlet of the heat exchanger, an outside air passage for guiding the outside air to an outside air inlet of the heat exchanger, an air return passage for bypassing the heat exchanger and circulating the air return from the vehicle interior, and an exhaust port for exhausting the exhaust gas after passing through the heat exchanger to the outside of the vehicle interior; A filter disposed on an upstream side of the exhaust gas introduction port and the outside air introduction port of the heat exchanger so as to cross at least the exhaust gas passage and the outside air passage of the exhaust gas passage, the outside air passage, and the return air passage, and And a damper for adjusting the amount of outside air introduced into the vehicle interior by changing the opening ratios of the outside air passage and the return air passage on the upstream side of the filter.
2. The air-conditioning apparatus according to claim 1, wherein, The heat exchanger is a total heat exchanger.
3. The air-conditioning apparatus according to claim 1, wherein, The air conditioning device further comprises: A concentration sensor for detecting the carbon dioxide concentration of the return air flowing in the return air channel, and And a control unit configured to control the damper so that the carbon dioxide concentration detected by the concentration sensor becomes smaller than a predetermined concentration.
4. The air-conditioning apparatus according to claim 1, wherein, The air conditioning device further comprises: a temperature and humidity sensor for detecting the temperature and humidity of the return air flowing in the return air channel; An outside air temperature sensor for detecting an outside air temperature, and And a control unit configured to determine a dew point temperature from the temperature and humidity detected by the temperature and humidity sensor, and to control the damper so that the dew point temperature is lower than the outside air temperature detected by the outside air temperature sensor.
5. The air-conditioning apparatus according to claim 1, wherein, The air conditioning device is configured to be detachably mounted to an inside and outside air inlet of an HVAC unit.

Description

Air conditioning device Technical Field The present invention relates to an air conditioning apparatus for performing air conditioning in a vehicle cabin. Background In a vehicle such as an automobile, an air conditioning apparatus such as an HVAC (Heating, ventilation, and air conditioning) system that performs Heating, ventilation, and air conditioning is mounted in order to keep the interior of the vehicle comfortable. As described in japanese patent application laid-open No. 2016-155516 (patent document 1), the air conditioning apparatus includes a heat exchanger that improves energy saving performance by exchanging heat between outside air introduced into the vehicle interior and inside air discharged outside the vehicle interior when ventilation is performed. Prior art literature Patent literature Patent document 1 Japanese patent laid-open publication 2016-155516 Disclosure of Invention Problems to be solved by the invention However, in the air conditioning apparatus described in patent document 1, since the outside air and the inside air containing foreign matter such as dust are directly introduced into the heat exchanger, clogging of the heat exchanger is increased with the passage of time, and there is a possibility that the performance of the heat exchanger is lowered. Accordingly, an object of the present invention is to suppress degradation of performance of an exchanger with time passage in an air conditioning apparatus including the heat exchanger. Means for solving the problems The air conditioning device is provided with a heat exchanger that exchanges heat between exhaust gas discharged from the interior of a vehicle to the outside of the vehicle and outside air introduced from the outside of the vehicle to the inside of the vehicle, and a case that is formed with an exhaust passage that guides the exhaust gas to an exhaust gas introduction port of the heat exchanger, an outside air passage that guides the outside air to an outside air introduction port of the heat exchanger, an air return passage that bypasses the heat exchanger and circulates return air from the inside of the vehicle, and an exhaust port that discharges the exhaust gas after passing through the heat exchanger to the outside of the vehicle. The air conditioning apparatus includes a filter disposed on an upstream side of the exhaust gas inlet and the outside air inlet of the heat exchanger so as to extend across the entire exhaust gas passage, the outside air passage, and the return air passage, and a damper for adjusting an amount of outside air introduced into the vehicle interior by changing opening ratios of the outside air passage and the return air passage on the upstream side of the filter. Effects of the invention According to the present invention, in an air conditioning apparatus including a heat exchanger, a decrease in performance of the heat exchanger with the passage of time can be suppressed. Drawings Fig. 1 is a schematic diagram showing an example of an HVAC (Heating, ventilation and Air Conditioning) system. Fig. 2 is a schematic perspective view showing an example of a stationary heat exchanger. Fig. 3 is an operation explanatory diagram of the outside air introduction mode in summer. Fig. 4 is an operation explanatory diagram of the hybrid mode in summer. Fig. 5 is an operation explanatory diagram of the cycle mode in summer. Fig. 6 is an operation explanatory diagram of the outside air introduction mode in winter. Fig. 7 is an operation explanatory diagram of the hybrid mode in winter. Fig. 8 is an operation explanatory diagram of the cycle mode in winter. Detailed Description Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. Fig. 1 shows an example of an HVAC system 1 to which the present embodiment can be applied. Note that the HVAC system 1 described below is merely an example to which the present embodiment can be applied, and should not be construed as being limited to this configuration. Therefore, it is needless to say that the present embodiment can be arbitrarily changed and modified within the technical scope of the present embodiment. The HVAC system 1 is also exemplified as an air conditioning apparatus. The HVAC system 1 includes a heat exchanger 3 that exchanges heat between exhaust gas discharged from the interior of the vehicle to the outside of the vehicle and outside air introduced from the outside of the vehicle to the inside of the vehicle, a case 5 that houses the heat exchanger 3, and a filter 7 that removes foreign matter such as dust contained in the exhaust gas, the outside air, and return air from the inside of the vehicle. The heat exchanger 3 can be used as, for example, a total heat exchanger for exchanging and recovering sensible heat (temperature) and latent heat (humidity) which are total heat of air conditioning energy lost by ventilation. If the heat exchanger 3 is used as the total