JPS61149743A - Air coditioner - Google Patents

Abstract

PURPOSE:To prevent heat loss and dew condensation caused by heat radiation, and to prevent fluctuation in refrigerating cycles caused by the change in environmental temperature, by making the refrigerator unit of an air conditioner including a cylindri cal water heat exchanger on the supply side, a liquid reservoir housed in the hollow space of a heat exchanger, an accumulator, and a compressor to heat-insulating struc ture, by covering all those sections with foamed heat insulation material in one body as a whole. CONSTITUTION:All constituent sections for refrigerating cycle encircled by dotted lines, including a water heat exchanger 3 on the supply side, a low pressure accumulator 6, a compressor 7 and a liquid reservoir 15, are made of heat-insulating structure, a completely insulated from atmosphere, as the sections are foam-molded in one body by a foamed heat insulation material 16 such as foam urethane. Because all sections of a refrigerator unit are completely insulated from open air as a whole, the refrigerator is not affected by the environmental temparature, and energy loss and dew condensation caused by heat radiation are none in it. The size of a refrigerator can be made compact as a whole by utilizing a hollow space. Besides, pipings and units are free from vibration and resonance, because mechanical vibration transmitted from a power system is absorbed by the heat insulation material. As a result, stabilized performance can be obtained in an air conditioner.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明はヒートポンプ式の冷凍サイクルを持つ空気調
和装置に関し、特に冷凍サイクルの構成要素の放熱ロス
及び結露を防ぎ、かつ周囲温度による冷凍サイクルの変
動をなくするものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an air conditioner having a heat pump type refrigeration cycle, and in particular, to prevent heat radiation loss and dew condensation from the components of the refrigeration cycle, and to prevent the refrigeration cycle from changing depending on the ambient temperature. This eliminates fluctuations.

〔従来の技術〕[Conventional technology]

従来、チリングユニット等に適用される空気調和装置は
、一般に冷凍装置を収容する機械室部分と、非利用側空
気熱交換器等を収容する熱交換室と、送風機及びこれら
を覆うケーシング部からなり、冷凍装置は、圧縮機、利
用側水熱交換器、余剰冷媒を貯える液溜容器、紋り装置
及びアキュムレータ等からなっている。Conventionally, an air conditioner applied to a chilling unit, etc. generally consists of a machine room section that houses a refrigeration device, a heat exchange room that houses a non-use side air heat exchanger, etc., a blower, and a casing section that covers these. The refrigeration system consists of a compressor, a water heat exchanger on the user side, a liquid storage container for storing surplus refrigerant, a swell device, an accumulator, and the like.

第５図はこの種従来の空気調和装置の冷凍サイクル図を
示すもので、１は圧縮機、２は四方弁、３は利用側水熱
交換器で、その外管３ａには蓄熱槽または冷却塔からの
水が循環されるようになっているとともに、外管３ａ内
に挿着した内管（図示せず）には圧縮機１の運転により
冷媒が循環するようになっている。＊た、４は非利用側
空気熱交換器、５はその送風機、６は低圧アキュムレー
タ、７は利用側水熱交換器３と非利用側空気熱交換器４
とを結ぶ冷媒通路に設けた絞り装置で、逆止弁８ａ〜８
ｄと、ドライヤ９と、冷房用キャピラリチューブ１０と
、暖房用キャピラリチェープ１１と、電磁弁１２と、電
気式膨張弁１３及び二重管１４とから構成され、そして
、上記二重管１４は電磁弁１２に接続された内管１４ａ
と、電気式膨張弁１３に接続され内管１４ｍの周囲に覆
うようにした外管１４ｂとからなる。また、１５は利用
側水熱交換器３と絞り装置７間を結ぶ冷媒通路に設けた
余剰冷媒用の液溜容器である。Fig. 5 shows a refrigeration cycle diagram of this type of conventional air conditioner, in which 1 is a compressor, 2 is a four-way valve, 3 is a user-side water heat exchanger, and the outer pipe 3a has a heat storage tank or cooling Water from the tower is circulated, and refrigerant is circulated through an inner pipe (not shown) inserted into the outer pipe 3a by operation of the compressor 1. * 4 is the air heat exchanger on the non-use side, 5 is its blower, 6 is the low-pressure accumulator, 7 is the water heat exchanger 3 on the use side and the air heat exchanger 4 on the non-use side
A throttling device installed in the refrigerant passage connecting the check valves 8a to 8.
d, a dryer 9, a capillary tube 10 for cooling, a capillary chain 11 for heating, a solenoid valve 12, an electric expansion valve 13, and a double pipe 14. Inner pipe 14a connected to solenoid valve 12
and an outer pipe 14b connected to the electric expansion valve 13 and surrounding the inner pipe 14m. Moreover, 15 is a liquid storage container for surplus refrigerant provided in the refrigerant passage connecting the utilization side water heat exchanger 3 and the expansion device 7.

上記二重管は、内管のキャピラリ内を流れる冷媒流量が
入口冷媒の圧力と過冷却度とに依存するということを利
用して、内管１４ａのキャピラリの周囲の流量を電気式
膨張弁１３によって制御し、これにより内管のキャピラ
リの過冷却度を変化させて全体の冷媒流量を制御するの
である。The double pipe uses the fact that the flow rate of refrigerant flowing inside the capillary of the inner pipe depends on the pressure of the inlet refrigerant and the degree of supercooling to control the flow rate around the capillary of the inner pipe 14a using the electric expansion valve 13. This controls the overall refrigerant flow rate by changing the degree of supercooling of the capillary in the inner tube.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上記のような、従来の空気調和！ＩＲにおける問題点は
、前記の絞りｉｔの外管に流す電気式膨張弁１３からの
流量は正確さを要するばかりでなく、内管のキャピラリ
の周囲を減圧、蒸発させて熱交換を行なうことにより、
過冷却度を調整するものであるため、外気温度の影響を
受けやすく、実際の制御においては内管のキャピラリと
外管と外気との両方で決定する必要があり、かつ不安定
となるという問題がある。また、多数のキャピラリ及び
電気部品を使用しているため、使用時の絞り装置からの
配管振れが大きく、その振動減衰のため対策が必要とな
る。Conventional air conditioning as above! The problem with IR is that the flow rate from the electric expansion valve 13 that flows into the outer tube of the aperture IT requires not only accuracy, but also the pressure around the capillary of the inner tube is reduced and evaporation is performed to perform heat exchange. ,
Because it adjusts the degree of supercooling, it is easily affected by the outside air temperature, and in actual control, it must be determined by both the inner tube capillary, the outer tube, and the outside air, and it is unstable. There is. Furthermore, since a large number of capillaries and electrical parts are used, there is a large amount of piping vibration from the throttling device during use, and countermeasures are required to dampen this vibration.

さらにチリングユニット等の空気調和装置は、屋外に設
置されるため、その冷凍装置部分は外気の影響を受けや
すく、放熱による熱交換能力の低下や各部品の放熱ロス
が大きいほか、外気の影響による冷凍サイクルの変動、
部品表面への結露により冷凍装置の信頼性が低下し、さ
らに結露水を収集、排水するために冷凍装置の台枠をド
シン皿構造にしなければならない等の問題があった。Furthermore, since air conditioners such as chilling units are installed outdoors, their refrigeration equipment is susceptible to the effects of outside air, resulting in a reduction in heat exchange capacity due to heat radiation and large heat loss in each component. Fluctuations in the refrigeration cycle,
Condensation on the surfaces of the parts lowers the reliability of the refrigeration system, and there are also problems such as the need for the frame of the refrigeration system to have a dish-like structure in order to collect and drain the condensed water.

この発明は、上記のような従来の問題を解決するために
なされたもので、利用側水熱交換器、絞り装置、ａｍ容
器等の冷凍サイクル構成要素からの放熱ロス及びその結
露を防止し、併せて周囲温度による冷凍サイクルの変動
をなくするようにした空気調和装置を提供することを目
的とする。This invention was made in order to solve the conventional problems as described above, and prevents heat radiation loss and condensation from refrigeration cycle components such as the user-side water heat exchanger, expansion device, and am container, Another object of the present invention is to provide an air conditioner that eliminates fluctuations in the refrigeration cycle due to ambient temperature.

〔問題点を解決するための手段〕[Means for solving problems]

この発明に係る空気調和装置は、利用側水熱交換器を筒
状に形成し、この筒状の中空部内に他の冷凍装置を構成
する液′Ｍ容器、アキエムレータ及び紋り装置等の部品
を収容し、中空部内の収容部品及び利用側水熱交換器全
体を断熱材によりモールドしたものである。In the air conditioner according to the present invention, the user-side water heat exchanger is formed into a cylindrical shape, and parts such as a liquid 'M container, an aqueous emulator, and a refrigeration device constituting other refrigeration equipment are placed inside the cylindrical hollow part. The housing parts in the hollow part and the entire user-side water heat exchanger are molded with a heat insulating material.

〔作用〕[Effect]

この発明においては、筒状に形成した利用側水熱交換器
及びその中空部内に収容しだ液溜容器。In the present invention, there is provided a user-side water heat exchanger formed in a cylindrical shape and a liquid storage container accommodated in the hollow portion thereof.

７キユムレータ、紋り装置の部品全体を発泡断熱材等に
より被覆モールドして断熱構造とすることにより、冷凍
装置が外気温度に影響されなくなり、所期の目的が達成
される。7. By molding the entire parts of the storage device and the refrigeration device with a foamed heat insulating material or the like to form a heat insulating structure, the refrigeration device is not affected by the outside temperature, and the intended purpose is achieved.

〔実施例〕〔Example〕

以下、この発明の一実施例を第１図乃至第４図について
説明する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

第１図はこの発明に係る空気調和装置の冷凍サイクル図
を示すもので、第４図と同一の部分には同一符号を付し
てその説明を省略し、第４図と異なる部分を重点に述べ
る。FIG. 1 shows a refrigeration cycle diagram of an air conditioner according to the present invention. The same parts as in FIG. state

第１図からも明らかなように１点鎖線で囲んだ冷凍サイ
クルの各構成部品、即ち、利用側水熱交換器３．低圧ア
キュムレータ６１絞り装置７及び液溜容器１５全体を、
発泡ウレタン等の発泡断熱材１６により被覆モールドし
て、外気と完全に遮断された断熱構造にしたものである
。As is clear from FIG. 1, each component of the refrigeration cycle surrounded by a dashed-dotted line includes the user-side water heat exchanger 3. The entire low pressure accumulator 61 throttle device 7 and liquid storage container 15,
It is covered and molded with a foamed heat insulating material 16 such as foamed urethane to create a heat insulating structure that is completely isolated from the outside air.

！１１２図乃至第４図は利用側水熱交換器３を含む底圧
アキエムレータ６、紋り装置７及び液溜容器１５の断熱
構造を具体的に示した場合の空気調和装置の全体図を示
すもので、１７は比較的厚鋼板によって皿状に成形され
た台枠であり、この台枠１７上の四隅部分には４本の支
柱１８が垂直に取り付けられ、さらにこの支柱１８の前
面側及び後面側同志の上端をそれぞれ連結板１９．２０
により互いに連結することで機械室Ａを構成しで１１す
る。! 112 to 4 show the overall diagram of the air conditioner when the insulation structure of the bottom pressure achievator 6 including the water heat exchanger 3 on the user side, the swell device 7, and the liquid storage container 15 is specifically shown. Reference numeral 17 denotes an underframe formed into a dish shape from a relatively thick steel plate, and four columns 18 are vertically attached to the four corners of this underframe 17, and the front and rear sides of these columns 18 are attached vertically to the four corners of this underframe 17. Connecting plates 19 and 20 at the upper ends of the side comrades, respectively.
The machine room A is constructed by connecting them to each other.

この機械室Ａ内の台枠１７上には、上記圧縮８！１及び
上記利用側水熱交換器３が設置されてＩｌｌるとともに
、機械室Ａ内の連結板１９には、冷凍装置及び送風ｆｉ
５を制御する接触器、リレー、保護装置等を装着した電
気制御盤２１が、連結板２０には図示しないジスターン
タンクがそれぞれ取り付けられている。On the underframe 17 in the machine room A, the compressor 8!1 and the water heat exchanger 3 on the user side are installed. fi
An electric control panel 21 equipped with a contactor, a relay, a protection device, etc. for controlling the 5 is attached to the connecting plate 20, and a distern tank (not shown) is attached to the connecting plate 20, respectively.

２２は上記支柱１８上に取り付けたドレンパンで、この
ドレンパン２２上には、フレートフィンと鋼管でＬ字状
に成形した非利用側空気熱交換器４が設置されている。Reference numeral 22 denotes a drain pan attached to the above-mentioned support column 18. On this drain pan 22, a non-use side air heat exchanger 4 formed into an L-shape using a plate fin and a steel pipe is installed.

２２ａはドレンパン２゛２に形成したドレン排出口であ
る。22a is a drain outlet formed in the drain pan 2-2.

２３〜２６は上記四隅の支柱１８に取り付けられる外装
用支柱で、この外装用支柱２３〜２６によりＳまれる前
後及び左右の側面は、第２図に示すような板材２７〜２
９を外装用支柱２３〜２６に取り付けることによってカ
バーされ、装置のケーシングを構成するようになってい
る。＊た、上記ケーシングで覆われた外装用支柱２３〜
２６の上端には、送風機５を装着したファンケーシング
５ａが一体に取り付けられ、送風機５はＬ字状の非利用
側空気熱交換器４で囲まれた熱交換室Ｂの対向している
。Reference numerals 23 to 26 are exterior pillars attached to the four corner pillars 18, and the front, rear, left and right sides of the exterior pillars 23 to 26 are made of plate materials 27 to 2 as shown in FIG.
9 are attached to exterior supports 23 to 26 to form a casing of the device. *The exterior pillar 23 covered with the above casing
A fan casing 5a equipped with a blower 5 is integrally attached to the upper end of the fan 26, and the blower 5 faces a heat exchange chamber B surrounded by an L-shaped non-use side air heat exchanger 4.

また、上記利用側水熱交換器３は、蓄熱槽または冷却塔
の水回路に接続される外管３ａと冷媒回路に接続される
内管（図示せず）をコイル状にした円筒形をなし、この
ように成形した利用側水熱交換器３の中空部３ｂ内には
、第３図及び第４図に示すごとく低圧アキエムレータ６
と、絞り装Ｍ７を構成する逆止弁８＆〜８ｄ、ドライヤ
９．冷房用キャピラすチェープ１０．Ｉｌｌ房用キャピ
ラリチェーブ１１、電磁弁１２．電気式膨張弁１３およ
び二重管１４と、液溜容器１５が収容され、そしてこれ
ら全体はケース１７内にセットされた後、その内部空間
に発泡ウレタン等の発泡断熱材１６を充填し、利用側水
熱交換器３を含む収容部品全体を被覆し、かつモールド
して各収容部品を外気から完全に遮断した断熱構造にす
る。Further, the user-side water heat exchanger 3 has a cylindrical shape in which an outer pipe 3a connected to a water circuit of a heat storage tank or a cooling tower and an inner pipe (not shown) connected to a refrigerant circuit are coiled. In the hollow part 3b of the user-side water heat exchanger 3 formed in this way, there is a low pressure Akiemulator 6 as shown in FIGS. 3 and 4.
, check valves 8&~8d constituting the throttle device M7, and dryer 9. Capillary chain for cooling 10. Ill chamber capillary tube 11, solenoid valve 12. An electric expansion valve 13, a double pipe 14, and a liquid storage container 15 are housed, and after these are all set in a case 17, the internal space is filled with a foam insulation material 16 such as foamed urethane and used. The entire housing part including the side water heat exchanger 3 is coated and molded to form a heat insulating structure that completely isolates each housing part from the outside air.

次にｓｉ図に従って、冷凍サイクル運転を説明すると、
冷房運伝の場合は、圧縮機１から吐出された高温、高圧
のガス冷媒は、四方弁２を通って非利用側空気熱交換器
４へ送られ、ここで送風機５によりガス冷媒が凝縮され
、高圧の液冷媒となる。この高圧液冷媒は逆止弁８ａを
通ってドライヤ９１電磁弁１２．電気式膨張弁１３．二
重管１４でそれぞれ減圧される。＊た冷房用キャピラリ
チ。Next, the refrigeration cycle operation will be explained according to the SI diagram.
In the case of cooling transmission, the high temperature, high pressure gas refrigerant discharged from the compressor 1 is sent through the four-way valve 2 to the non-use side air heat exchanger 4, where the gas refrigerant is condensed by the blower 5. , becomes a high-pressure liquid refrigerant. This high-pressure liquid refrigerant passes through the check valve 8a to the dryer 91 and the solenoid valve 12. Electric expansion valve 13. The pressure is reduced in each double pipe 14. *Capillary for cooling.

−プ１０でも減圧をうける。減圧された低圧のγス、液
混合冷媒は利用側水熱交換器３で蒸発し、外部から導入
される外管３＆内の水を冷却して熱交換を行なう。また
、蒸発したガス、液混合冷媒は低圧アキュムレータ６へ
送られ、液は底部へ。-Pull 10 is also depressurized. The reduced pressure low-pressure gamma gas/liquid mixed refrigerant evaporates in the user-side water heat exchanger 3, cools the water introduced from the outside in the outer tube 3&, and performs heat exchange. Also, the evaporated gas and liquid mixed refrigerant is sent to the low pressure accumulator 6, and the liquid goes to the bottom.

ガスは配管６ａを通って四方弁２へ、そして圧縮機１へ
と戻る。The gas passes through the pipe 6a to the four-way valve 2 and then returns to the compressor 1.

一方、暖房運転の場合は逆の経路をたどる。即ち、圧縮
８！１より吐出された＾温、高圧のガス冷媒は四方弁２
を通って利用側水熱交換器３へ送られ、そこで外管３ａ
を流れる温水によりａｍされて高圧の液冷媒となる。こ
の高圧の液冷媒は液溜容器１５．逆止弁８ｂを通って紋
り装置７で減圧される。＊た、暖房用キャピラリチュー
ブ１１でも減圧される。On the other hand, in the case of heating operation, the route is reversed. That is, the high temperature, high pressure gas refrigerant discharged from the compression 8!1 is transferred to the four-way valve 2.
through the water heat exchanger 3 on the user side, where the outer pipe 3a
It becomes a high-pressure liquid refrigerant by being amped by the hot water flowing through it. This high pressure liquid refrigerant is stored in a liquid storage container 15. It passes through the check valve 8b and is depressurized by the curving device 7. *In addition, the pressure is also reduced in the heating capillary tube 11.

このような冷・暖房の冷凍サイクル運転が繰り返される
と、従来の冷凍装置では、外気との温度差から低圧アキ
エムレータ６はその表面に結露し、また液溜容器１５か
ら放熱によるエネルギー損失が生じたり、結露したりす
るのであるが、この発明の実施例では、低圧アキュムレ
ータ６、液溜容器１５が断熱材で被覆されているため、
上記の現象は回避できるほか、冷凍サイクルが外気温の
影響を受けることがない。また、低圧アキュムレータ６
．８！溜容器１５及び絞９装置ｉ７は、利用側水熱交換
器３の円筒中空部３ｂ内に収容され、断熱材１６で一体
にモールドされるため、装置のコンパクト化が可能とな
り、ドレン排水の問題もなくなる。When such a cooling/heating refrigeration cycle operation is repeated, in a conventional refrigeration system, dew condensation occurs on the surface of the low-pressure Akiemulator 6 due to the temperature difference with the outside air, and energy loss occurs due to heat radiation from the liquid storage container 15. However, in the embodiment of the present invention, since the low pressure accumulator 6 and the liquid storage container 15 are covered with a heat insulating material,
In addition to avoiding the above phenomenon, the refrigeration cycle is not affected by the outside temperature. Also, low pressure accumulator 6
．． 8! The storage container 15 and the diaphragm 9 device i7 are housed in the cylindrical hollow part 3b of the water heat exchanger 3 on the user side, and are integrally molded with the heat insulating material 16, so the device can be made more compact and there is no problem with drain drainage. It also disappears.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、この発明によれば、冷凍ｉ置部品
の利用側水熱交換器を全体が筒状となるように形成し、
その中空部内に冷凍装置の他の部品である７キユムレー
タ、液溜容器、絞り装置等を収容し、これら収容部品及
び利用側水熱交換器全体を断熱材によりモールド被覆す
る構造としたので、外気とこれら部品とは完全に遮断さ
れ、放熱によるエネルギー損失がなく、結露もない周囲
温度に影響されない冷凍装置が得られるばかりでなく、
空間を利用して冷凍装置全体をコンパクトにまとめるこ
とができ、かつ動力系からの機械的振動が断熱材で吸収
されるので配管や装置の不要な振動や共振が防止され、
空気調和装置として性能の安定したものを得ることがで
きるという効果がある。As explained above, according to the present invention, the user-side water heat exchanger of the refrigeration equipment part is formed so as to have a cylindrical shape as a whole,
The other parts of the refrigeration system, such as the 7 storage unit, liquid storage container, expansion device, etc., are housed in the hollow part, and these housing parts and the entire water heat exchanger on the user side are molded and covered with a heat insulating material, so that the outside air can be These parts are completely isolated, and not only can you obtain a refrigeration system that is not affected by ambient temperature with no energy loss due to heat radiation and no condensation, but also
The entire refrigeration system can be made compact by utilizing space, and mechanical vibrations from the power system are absorbed by the insulation material, preventing unnecessary vibrations and resonances of piping and equipment.
This has the effect of providing an air conditioner with stable performance.

【図面の簡単な説明】[Brief explanation of drawings]

第１図乃至第４図はこの発明の一実施例を示し、＃１１
１！Ｉは空気調和Ｉｊｃ置の冷凍サイクル図、第２図は
全体の構成を示す分解斜視図、ｆＩＳ３図は利用側水熱
交換器部分の平面図、第４図はその側面図、ｌ＠５図は
従来の冷凍サイクルを示す模式図である。 １・・・圧縮機、２・・・四方弁、３・・・利用側水熱
交換器、３ｂ−・・中空部、４・・・非利用側空気熱交
換器、５・・・送風機、６・・・７キユムレータ、７・
・・紋り装置、１５・・・液溜容器、１６・・・断熱材
。 なお、図中同一符号は同一または相当部分を示す。 代理人　大　岩　増　雄（ばか２名） 第１図 第３図 第４図 乙FIGS. 1 to 4 show an embodiment of the present invention, #11
1! I is a refrigeration cycle diagram of the air conditioner Ijc, Fig. 2 is an exploded perspective view showing the overall configuration, fIS3 is a plan view of the water heat exchanger on the user side, Fig. 4 is its side view, l@5 Fig. is a schematic diagram showing a conventional refrigeration cycle. DESCRIPTION OF SYMBOLS 1... Compressor, 2... Four-way valve, 3... Utilization side water heat exchanger, 3b-... Hollow part, 4... Non-utilization side air heat exchanger, 5... Air blower, 6...7 Kyumurata, 7.
...Fingerprint device, 15...Liquid storage container, 16...Insulating material. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent: Masuo Oiwa (2 idiots) Figure 1 Figure 3 Figure 4 Figure B

Claims (1)

【特許請求の範囲】[Claims] 圧縮機と、利用側水熱交換器と、液溜容器と、絞り装置
と、アキュムレータ等により冷凍サイクルを構成する冷
凍装置及び非利用側空気熱交換器を備えた空気調和装置
において、上記利用側水熱交換器を筒状に形成し、その
中空部内に上記液溜容器、絞り装置、アキュムレータ等
を収容するとともに、該収容部品を含む上記利用側水熱
交換器全体を断熱材で被覆したことを特徴とする空気調
和装置。In an air conditioner equipped with a refrigeration system and a non-use side air heat exchanger, which constitute a refrigeration cycle including a compressor, a use-side water heat exchanger, a liquid storage container, a throttling device, an accumulator, etc., the above-mentioned use side The water heat exchanger is formed into a cylindrical shape, and the liquid storage container, expansion device, accumulator, etc. are housed in the hollow part, and the entire user side water heat exchanger including the housing parts is covered with a heat insulating material. An air conditioner featuring: