JP2579029Y2 - Cooling unit for automotive air conditioner - Google Patents
Cooling unit for automotive air conditionerInfo
- Publication number
- JP2579029Y2 JP2579029Y2 JP1992065741U JP6574192U JP2579029Y2 JP 2579029 Y2 JP2579029 Y2 JP 2579029Y2 JP 1992065741 U JP1992065741 U JP 1992065741U JP 6574192 U JP6574192 U JP 6574192U JP 2579029 Y2 JP2579029 Y2 JP 2579029Y2
- Authority
- JP
- Japan
- Prior art keywords
- air
- expansion valve
- refrigerant
- duct
- filter device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Air-Conditioning For Vehicles (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この考案に係る自動車空調機用冷
房ユニットは、自動車空調機に組み込んで、自動車室内
に吹き出す空気を冷却したり、除湿したりする為に利用
する。The cooling unit for a vehicle air conditioner according to the present invention is incorporated in a vehicle air conditioner and used for cooling or dehumidifying air blown into a vehicle room.
【０００２】[0002]
【従来の技術】自動車室内の冷房を行なう為に、例えば
実開昭５２−２３７５６号公報等に記載されている様
に、蒸気圧縮式冷凍機が一般的に使用されている。図４
は、この様な蒸気圧縮式冷凍機の構造を略示している。2. Description of the Related Art As described in Japanese Utility Model Laid-Open Publication No. 52-23756, for example, a vapor compression refrigerator is generally used for cooling a vehicle cabin. FIG.
FIG. 1 schematically shows the structure of such a vapor compression refrigerator.
【０００３】コンプレッサ１で断熱圧縮される事により
温度上昇した冷媒蒸気は、コンデンサ２を通過する間に
空気との間で熱交換を行なって凝縮液化し、リキッドタ
ンク３に送られる。このリキッドタンク３には、図５に
示す様に、異物除去フィルタ４と水分除去フィルタ５
（乾燥剤）とが設けられており、上記コンデンサ２から
リキッドタンク３内に送り込まれた液状冷媒は、これら
両フィルタ４、５を通過する事で異物並びに水分を除去
されてから、上記リキッドタンク３の底部に貯溜され
る。[0003] Refrigerant vapor whose temperature has risen by being adiabatically compressed by the compressor 1 undergoes heat exchange with air while passing through the condenser 2 to be condensed and liquefied, and sent to the liquid tank 3. As shown in FIG. 5, the liquid tank 3 includes a foreign matter removing filter 4 and a water removing filter 5.
(Drying agent) is provided, and the liquid refrigerant sent from the condenser 2 into the liquid tank 3 is removed from the liquid tank 3 by passing through both the filters 4 and 5 to remove foreign matter and moisture. 3 is stored at the bottom.
【０００４】この様にリキッドタンク３の底部に貯溜さ
れた液状冷媒は、次いで膨張弁６を通過する事で急激に
膨張してからエバポレータ７内に、冷媒入口を通じて送
り込まれ、このエバポレータ７内で蒸発する。この様に
内部で冷媒を蒸発させる事により、このエバポレータ７
の温度が低下する。エバポレータ７は、図６に示す様
に、空調用の空気を流通させる為のダクト８内に配置さ
れており、空調用の空気はこのエバポレータ７のコア部
を通過しつつ流れる。この為、上記空調用の空気の温度
が低下し、自動車室内の冷房並びに除湿を行なえる。[0004] The liquid refrigerant stored at the bottom of the liquid tank 3 in this way rapidly expands by passing through the expansion valve 6 and then is sent into the evaporator 7 through the refrigerant inlet, where it is removed. Evaporate. By evaporating the refrigerant inside in this way, the evaporator 7
Of the temperature decreases. As shown in FIG. 6, the evaporator 7 is disposed in a duct 8 for circulating air for air conditioning, and the air for air conditioning flows while passing through the core of the evaporator 7. For this reason, the temperature of the air for air-conditioning falls, and cooling and dehumidification in the vehicle interior can be performed.
【０００５】尚、上記膨張弁６並びにこの膨張弁６と上
記冷媒入口とを結ぶ配管９は、図６に示す様に、エバポ
レータ７と共にダクト８内に配置して、この膨張弁６及
び配管９が、ダクト８内を流れる空気に曝らされる様に
している。これは、冷媒が膨張弁６を通過した直後から
蒸発を開始し、上記配管９の温度を低下させる為、この
配管９によってもダクト８内を流れる空気を冷却する為
である。The expansion valve 6 and a pipe 9 connecting the expansion valve 6 and the refrigerant inlet are arranged in a duct 8 together with an evaporator 7 as shown in FIG. Is exposed to the air flowing through the duct 8. This is because the refrigerant starts to evaporate immediately after passing through the expansion valve 6 and lowers the temperature of the pipe 9, so that the pipe 9 also cools the air flowing through the duct 8.
【０００６】[0006]
【考案が解決しようとする課題】本考案の自動車空調機
用冷房ユニットは、冷媒中に含まれる異物や水分を除去
する為のフィルタ４、５が詰まった場合に於ける、冷却
効率の低下を最小限に抑える事を目的としている。The cooling unit for an automotive air conditioner according to the present invention reduces the cooling efficiency when the filters 4 and 5 for removing foreign substances and moisture contained in the refrigerant are clogged. The aim is to minimize it.
【０００７】前述の様に、従来構造の場合、リキッドタ
ンク３内に異物除去フィルタ４と水分除去フィルタ５と
を設けているが、これら各フィルタ４、５は、稀にでは
あるが詰まって、冷媒通過に対し大きな抵抗となる場合
がある。この様に各フィルタ４、５が詰まった場合、冷
媒はフィルタ４、５を通過後に急激に膨張し、各フィル
タ４、５の通過直後から蒸発を開始してしまう。As described above, in the case of the conventional structure, the foreign matter removing filter 4 and the moisture removing filter 5 are provided in the liquid tank 3, but these filters 4 and 5 are rarely clogged. In some cases, the resistance to the passage of the refrigerant becomes large. When the filters 4 and 5 are clogged in this way, the refrigerant expands rapidly after passing through the filters 4 and 5, and starts evaporating immediately after passing through the filters 4 and 5.
【０００８】この結果、前記膨張弁６とエバポレータ７
とを結ぶ配管９だけでなく、上記リキッドタンク３と膨
張弁６とを結ぶ配管１０の温度も低下してしまう。とこ
ろが、上記リキッドタンク３は保守管理の必要上、エン
ジンルーム内に設けられており、上記配管１０もエンジ
ンルーム内に配設されている為、この配管１０の温度が
低下しても、エンジンルーム内に存在する比較的高温の
空気との間で熱交換を行なうだけで、ダクト８内を流れ
る空調用の空気を冷やす事に関しては全く寄与しないば
かりか、エバポレータ７の温度が十分に低下しなくなっ
て、冷房能力が低下してしまう。As a result, the expansion valve 6 and the evaporator 7
Not only the pipe 9 connecting the liquid tank 3 but also the temperature of the pipe 10 connecting the liquid tank 3 and the expansion valve 6 is reduced. However, since the liquid tank 3 is provided in the engine room due to the necessity of maintenance, the pipe 10 is also provided in the engine room. The heat exchange with the relatively high-temperature air existing in the duct 8 does not contribute to cooling the air-conditioning air flowing through the duct 8, and the temperature of the evaporator 7 does not sufficiently decrease. As a result, the cooling capacity is reduced.
【０００９】本考案の自動車空調機用冷房ユニットは、
上述の様な事情に鑑みて考案されたものである。[0009] The cooling unit for an automotive air conditioner of the present invention comprises:
It has been devised in view of the above circumstances.
【００１０】[0010]
【課題を解決するための手段】本考案の自動車空調機用
冷房ユニットは、前述した従来構造と同様に、ダクト内
に配置され、このダクトを通って自動車室内に吹き出す
空調用の空気を冷却する、冷媒入口と冷媒出口とを有す
るエバポレータと、上記空調入口の直前部に設けられ、
リキッドタンクから送られてくる液状冷媒を急激に膨張
させる膨張弁と、この膨張弁の上流側に設けられ、冷媒
中に含まれる異物並びに水分を捕集するフィルタ装置と
を備えている。The cooling unit for a vehicle air conditioner according to the present invention is disposed in a duct, and cools air for air conditioning blown into the vehicle compartment through the duct, similarly to the above-described conventional structure. An evaporator having a refrigerant inlet and a refrigerant outlet, provided immediately before the air conditioning inlet,
An expansion valve for rapidly expanding the liquid refrigerant sent from the liquid tank, and a filter device provided upstream of the expansion valve for collecting foreign matter and moisture contained in the refrigerant are provided.
【００１１】特に、本考案の自動車空調機用冷房ユニッ
トに於いては、少なくとも上記フィルタ装置の直下流部
分から上記膨張弁迄の配管部分を、この膨張弁から上記
冷媒入口迄の配管部分と共に、上記ダクト内で上記空調
用の空気が流通する部分に配置した事を特徴としてい
る。In particular, in the cooling unit for an automobile air conditioner of the present invention, at least a pipe portion from a portion immediately downstream of the filter device to the expansion valve is provided together with a pipe portion from the expansion valve to the refrigerant inlet. It is characterized in that the air-conditioning air is disposed at a portion in the duct where the air for air-conditioning flows.
【００１２】[0012]
【作用】上述の様に構成される本考案の自動車空調機用
冷房ユニットの場合、仮にフィルタ装置が詰まり、この
フィルタ装置の直下流部分で冷媒の蒸発が開始される
と、この直下流部分と膨張弁とを結ぶ配管部分の温度が
低下する。本考案の自動車空調機用冷房ユニットの場
合、この配管部分が、ダクト内で上記空調用の空気が流
通する部分に配置されている為、この配管部分とダクト
内を流れる空調用の空気との熱交換が行なわれ、この空
気の温度が低下する。In the case of the cooling unit for an automobile air conditioner of the present invention configured as described above, if the filter device is clogged and the refrigerant starts to evaporate immediately downstream of the filter device, the cooling device is connected to the immediately downstream portion. The temperature of the pipe connecting the expansion valve decreases. In the case of the cooling unit for an automobile air conditioner of the present invention, since this piping portion is disposed in a portion through which the air for air conditioning flows in the duct, the piping portion and the air for air conditioning flowing in the duct are connected. Heat exchange takes place and the temperature of this air drops.
【００１３】[0013]
【実施例】図１〜３は本考案の実施例を示している。前
述した従来構造と同様、図３に示す様に、コンプレッサ
１で断熱圧縮される事により温度上昇した冷媒蒸気は、
コンデンサ２を通過する間に空気との間で熱交換を行な
って凝縮液化し、リキッドタンク３に送られる。但し、
従来構造の場合とは異なり、このリキッドタンク３に
は、図５に示す様な異物除去フィルタ４と水分除去フィ
ルタ５とは設けていない。従って、上記コンデンサ２か
らリキッドタンク３内に送り込まれた液状冷媒は、その
ままリキッドタンク３の底部に貯溜される。1 to 3 show an embodiment of the present invention. As in the conventional structure described above, as shown in FIG.
While passing through the condenser 2, heat exchange is performed with air to condense and liquefy and is sent to the liquid tank 3. However,
Unlike the conventional structure, the liquid tank 3 is not provided with the foreign matter removing filter 4 and the moisture removing filter 5 as shown in FIG. Therefore, the liquid refrigerant sent from the condenser 2 into the liquid tank 3 is stored in the bottom of the liquid tank 3 as it is.
【００１４】この様にリキッドタンク３の底部に貯溜さ
れた液状冷媒は、次いでフィルタ装置１１を通過してか
ら膨張弁６に送られる。このフィルタ装置１１には、図
２に示す様に、異物除去フィルタ４と水分除去フィルタ
５が設けられており、上記リキッドタンク３から送り出
された液状冷媒は、これら両フィルタ４、５を通過する
事で異物並びに水分を除去されてから、上記膨張弁６に
送られる。The liquid refrigerant stored at the bottom of the liquid tank 3 is then sent to the expansion valve 6 after passing through the filter device 11. As shown in FIG. 2, the filter device 11 is provided with a foreign matter removing filter 4 and a moisture removing filter 5, and the liquid refrigerant sent from the liquid tank 3 passes through both filters 4, 5. Then, the foreign matter and moisture are removed, and then sent to the expansion valve 6.
【００１５】上記液状冷媒は、膨張弁６を通過する事で
急激に膨張してからエバポレータ７内に、冷媒入口を通
じて送り込まれ、このエバポレータ７内で蒸発する。こ
の様に内部で冷媒を蒸発させる事で、このエバポレータ
７の温度が低下する。エバポレータ７は、図１に示す様
に、空調用の空気を流通させる為のダクト８内に配置さ
れており、空調用の空気はこのエバポレータ７のコア部
を通過しつつ流れる。この為、上記空調用の空気の温度
が低下し、自動車室内の冷房並びに除湿を行なえる。The liquid refrigerant expands rapidly by passing through the expansion valve 6, is sent into the evaporator 7 through the refrigerant inlet, and evaporates in the evaporator 7. By evaporating the refrigerant inside in this way, the temperature of the evaporator 7 decreases. As shown in FIG. 1, the evaporator 7 is disposed in a duct 8 for circulating air for air conditioning, and the air for air conditioning flows while passing through a core portion of the evaporator 7. For this reason, the temperature of the air for air-conditioning falls, and cooling and dehumidification in the vehicle interior can be performed.
【００１６】上記フィルタ装置１１は、図１に示す様
に、膨張弁６、及びこの膨張弁６と上記冷媒入口とを結
ぶ配管９、並びにエバポレータ７と共にダクト８内に配
置して、このフィルタ装置１１、フィルタ装置１１と膨
張弁６とを結ぶ配管１２、膨張弁６及び配管９が、ダク
ト８内を流れる空気に曝らされる様にしている。As shown in FIG. 1, the filter device 11 is disposed in a duct 8 together with an expansion valve 6, a pipe 9 connecting the expansion valve 6 and the refrigerant inlet, and an evaporator 7. 11, the pipe 12 connecting the filter device 11 and the expansion valve 6, the expansion valve 6, and the pipe 9 are exposed to the air flowing through the duct 8.
【００１７】上述の様に構成される本考案の自動車空調
機用冷房ユニットの場合、仮にフィルタ装置１１を構成
する異物除去フィルタ４、水分除去フィルタ５が詰ま
り、このフィルタ装置１１の直下流部分で冷媒の蒸発が
開始されると、この直下流部分と膨張弁６とを結ぶ配管
１２部分の温度が低下する。本考案の自動車空調機用冷
房ユニットの場合、この配管１２部分が、ダクト８内で
上記空調用の空気が流通する部分に配置されている為、
この配管１２部分とダクト８内を流れる空調用の空気と
の熱交換が行なわれ、この空気の温度が低下する。In the case of the cooling unit for an automobile air conditioner of the present invention configured as described above, the foreign matter removing filter 4 and the moisture removing filter 5 which constitute the filter device 11 are clogged, and the portion immediately downstream of the filter device 11 is located. When the evaporation of the refrigerant is started, the temperature of the pipe 12 connecting the immediately downstream portion and the expansion valve 6 decreases. In the case of the cooling unit for an automobile air conditioner of the present invention, since the pipe 12 is disposed in the duct 8 where the air for air conditioning flows,
Heat exchange between the pipe 12 and air-conditioning air flowing in the duct 8 is performed, and the temperature of the air decreases.
【００１８】従って、フィルタ装置１１が詰まった場合
には、冷媒の流通抵抗が増大する事で、蒸気圧縮式冷凍
機の効率が低下し、冷房能力が低下する事は避けられな
いにしても、残った冷房能力を最大限に利用する事で、
冷房能力の低下を最小限に抑える事が出来る。Therefore, when the filter device 11 is clogged, it is inevitable that the efficiency of the vapor compression refrigerator is reduced and the cooling capacity is reduced by increasing the flow resistance of the refrigerant. By maximizing the remaining cooling capacity,
A decrease in cooling capacity can be minimized.
【００１９】尚、図示の実施例では、フィルタ装置１１
自体をダクト８内に配置しているが、このフィルタ装置
１１と膨張弁６とを結ぶ配管１２をダクト８内に配置す
れば、フィルタ装置１１はダクト８の外側に配置する事
も出来る。この様な構造は、フィルタ装置１１が大型
で、ダクト８内の通気抵抗を増大させる恐れがある場合
に有効である。In the illustrated embodiment, the filter device 11 is used.
Although the filter device 11 itself is disposed in the duct 8, the filter device 11 can be disposed outside the duct 8 if the pipe 12 connecting the filter device 11 and the expansion valve 6 is disposed in the duct 8. Such a structure is effective when the filter device 11 is large and there is a risk of increasing the airflow resistance in the duct 8.
【００２０】[0020]
【考案の効果】本考案の自動車空調機用冷房ユニット
は、以上に述べた通り構成され作用する為、フィルタ目
詰まりによる異常時にも、冷房能力の低下を最小限に抑
えて、自動車室内の快適性維持を図れる。[Effects of the Invention] Since the cooling unit for an automobile air conditioner of the present invention is constructed and operates as described above, even in the event of an abnormality due to filter clogging, a decrease in the cooling capacity is minimized and the comfort in the vehicle interior is minimized. Maintains sex.
【図１】本考案の実施例を示す略斜視図。FIG. 1 is a schematic perspective view showing an embodiment of the present invention.
【図２】同じく実施例を示すフィルタ装置の略断面図。FIG. 2 is a schematic cross-sectional view of the filter device showing the embodiment.
【図３】同じく実施例を示す冷房ユニットを含む冷房装
置の回路図。FIG. 3 is a circuit diagram of a cooling device including a cooling unit according to the embodiment.
【図４】従来装置の回路図。FIG. 4 is a circuit diagram of a conventional device.
【図５】従来装置に組み込まれているリキッドタンクの
略断面図。FIG. 5 is a schematic cross-sectional view of a liquid tank incorporated in a conventional device.
【図６】従来装置の略斜視図。FIG. 6 is a schematic perspective view of a conventional device.
１ コンプレッサ ２ コンデンサ ３ リキッドタンク ４ 異物除去フィルタ ５ 水分除去フィルタ ６ 膨張弁 ７ エバポレータ ８ ダクト ９ 配管 １０ 配管 １１ フィルタ装置 １２ 配管 DESCRIPTION OF SYMBOLS 1 Compressor 2 Condenser 3 Liquid tank 4 Foreign matter removal filter 5 Water removal filter 6 Expansion valve 7 Evaporator 8 Duct 9 Piping 10 Piping 11 Filter device 12 Piping
Claims (1)
て自動車室内に吹き出す空調用の空気を冷却する、冷媒
入口と冷媒出口とを有するエバポレータと、上記冷媒入
口の直前部に設けられ、リキッドタンクから送られてく
る液状冷媒を急激に膨張させる膨張弁と、この膨張弁の
上流側に設けられ、冷媒中に含まれる異物並びに水分を
捕集するフィルタ装置とを備えた自動車空調機用冷房ユ
ニットに於いて、少なくとも上記フィルタ装置の直下流
部分から上記膨張弁迄の配管部分を、この膨張弁から上
記冷媒入口迄の配管部分と共に、上記ダクト内で上記空
調用の空気が流通する部分に配置した事を特徴とする自
動車空調機用冷房ユニット。1. An evaporator having a refrigerant inlet and a refrigerant outlet disposed in a duct for cooling air-conditioning air blown into a vehicle room through the duct, and an evaporator provided immediately in front of the refrigerant inlet, A vehicle air conditioner cooling system comprising: an expansion valve that rapidly expands a liquid refrigerant sent from a tank; and a filter device that is provided upstream of the expansion valve and that captures foreign matter and moisture contained in the refrigerant. In the unit, at least a pipe portion from the immediately downstream portion of the filter device to the expansion valve, together with a pipe portion from the expansion valve to the refrigerant inlet, is connected to a portion through which the air for air conditioning flows in the duct. A cooling unit for automotive air conditioners, which is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992065741U JP2579029Y2 (en) | 1992-08-28 | 1992-08-28 | Cooling unit for automotive air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992065741U JP2579029Y2 (en) | 1992-08-28 | 1992-08-28 | Cooling unit for automotive air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0622874U JPH0622874U (en) | 1994-03-25 |
| JP2579029Y2 true JP2579029Y2 (en) | 1998-08-20 |
Family
ID=13295750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992065741U Expired - Lifetime JP2579029Y2 (en) | 1992-08-28 | 1992-08-28 | Cooling unit for automotive air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2579029Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4144639B2 (en) * | 2006-08-31 | 2008-09-03 | ダイキン工業株式会社 | Air conditioner |
-
1992
- 1992-08-28 JP JP1992065741U patent/JP2579029Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0622874U (en) | 1994-03-25 |
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