JPH0210069A - Chilling and heating apparatus - Google Patents
Chilling and heating apparatusInfo
- Publication number
- JPH0210069A JPH0210069A JP16022188A JP16022188A JPH0210069A JP H0210069 A JPH0210069 A JP H0210069A JP 16022188 A JP16022188 A JP 16022188A JP 16022188 A JP16022188 A JP 16022188A JP H0210069 A JPH0210069 A JP H0210069A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- refrigerant
- air
- oil cooler
- oil
- 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.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 36
- 239000003507 refrigerant Substances 0.000 claims description 72
- 238000001816 cooling Methods 0.000 claims description 19
- 238000005057 refrigeration Methods 0.000 claims description 13
- 238000004378 air conditioning Methods 0.000 abstract description 5
- 238000001704 evaporation Methods 0.000 abstract description 3
- 230000008020 evaporation Effects 0.000 abstract description 3
- 238000011144 upstream manufacturing Methods 0.000 abstract description 3
- 239000002826 coolant Substances 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 29
- 239000010720 hydraulic oil Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/31—Low ambient temperatures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、ヒートポンプ式冷凍サイクルによって室内へ
吹き出す空気を冷却、または加熱し、室内の冷房と暖房
とを行う冷暖房装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air-conditioning device that cools or heats air blown into a room using a heat pump type refrigeration cycle to cool and heat the room.
［従来の技術］
従来、ヒートポンプ式冷凍サイクルを用いた冷暖房装置
は、室外熱交換器が室外の空気（外気）と冷媒とを熱交
換する′）Ｆｔ１１造であったため、暖房時、外気温度
が低下すると、室内の暖房能力が低下してしまう。[Prior art] Conventionally, air-conditioning equipment using a heat pump type refrigeration cycle has an outdoor heat exchanger that exchanges heat between outdoor air (outside air) and a refrigerant. If it decreases, the indoor heating capacity will decrease.
そこで、自動車など、エンジンを搭載した車両のし−ト
ポンプ式冷凍サイクルは、冷房運転時に冷媒を外気と熱
交換させて凝縮させる室外熱交換器の他に、暖房運転時
に冷媒をエンジン冷却水や、エンジンオイルなどと熱交
換させ゛Ｃ蒸発させる熱交換器を搭載し、外気温度が低
下しても暖房能力が低下しないように設けられＣいた。Therefore, in the case of a vehicle equipped with an engine, such as a car, the seat pump type refrigeration cycle uses an outdoor heat exchanger that exchanges heat with the outside air and condenses the refrigerant during cooling operation, as well as an outdoor heat exchanger that exchanges heat with the outside air and condenses the refrigerant during heating operation. It is equipped with a heat exchanger that exchanges heat with engine oil and evaporates C to prevent the heating capacity from decreasing even if the outside temperature drops.
［発明が解決しようとする課題］
しかしながら、外気と冷媒とを熱交換する室外熱交換器
の他に、冷却水や、オイルと冷媒とを熱交換さぜる熱交
換器を用いなし−トボンプ式冷凍サイクルは、冷却水や
、オイルと冷媒とを熱交換させる室外熱交換器を用いな
いし一トポンプ式冷凍サイクルに比較して、構造が複雑
となる問題点を備えていた。[Problem to be solved by the invention] However, in addition to an outdoor heat exchanger that exchanges heat between outside air and a refrigerant, a heat exchanger that exchanges heat between cooling water and oil and a refrigerant is not used. Refrigeration cycles have a problem in that they are more complex in structure than single-pump refrigeration cycles that use outdoor heat exchangers for heat exchange between cooling water or oil and refrigerant.
本発明は、上記事情に鑑みてなされたもので、その目的
は、構造が簡単で、月っ外気温度が低下しても暖房能力
が低下しないし−１〜ポンプ式冷凍サイクルを搭載した
冷暖房装置の提供にある。The present invention has been made in view of the above circumstances, and its purpose is to provide a heating and cooling system equipped with a pump-type refrigeration cycle that has a simple structure, does not reduce its heating capacity even when the outside temperature drops, and is equipped with a pump-type refrigeration cycle. It is provided by.
［課題を解決するための手段］
本発明は上記目的を達成するために、冷房運転時に冷媒
凝縮器として働き、暖房運転時に冷媒蒸発器として働く
室外熱交換器を備えたし−１−ポンプ式冷凍サイクルと
、暖房運転時に熱を放熱する放熱器と、前記室外熱交換
器と前記放熱器とを収容するとともに、開口部を備え、
冷房運転時に前記開口部を開き、暖房運転時に前記開口
部を閉しる箱体とを具備することを技術的手段とする。[Means for Solving the Problems] In order to achieve the above object, the present invention includes an outdoor heat exchanger that functions as a refrigerant condenser during cooling operation and as a refrigerant evaporator during heating operation. A refrigeration cycle, a radiator that radiates heat during heating operation, and an opening that accommodates the outdoor heat exchanger and the radiator,
The technical means includes a box body that opens the opening during cooling operation and closes the opening during heating operation.
［作用］
上記構成よりなる本発明は、冷房運転時に箱体の開口部
が開かれ、室外熱交換器によって加熱された空気は開口
部より箱体の外へ逃げる。これにより、箱体内は温度の
１．昇を免れ、室外熱交換器の凝縮能力の低下が免れる
。[Function] In the present invention having the above configuration, the opening of the box is opened during cooling operation, and the air heated by the outdoor heat exchanger escapes to the outside of the box through the opening. As a result, the inside of the box has a temperature of 1. This prevents the condensing capacity of the outdoor heat exchanger from decreasing.
暖房運転時は、箱体の開口部が閉じられるとともに、放
熱器か箱体内へ熱を放熱する。すると、箱体内の温度が
」１昇する。これにより、室外熱交換器を流れる冷媒は
、放熱器で加熱された箱体内の空気と熱交換されて加熱
される。この結果、室内熱交換器の放熱能力か増し、室
内に吹き出される空気を加熱して、室内を暖房する能力
が大きくなる。During heating operation, the opening of the box is closed and heat is radiated into the radiator or into the box. Then, the temperature inside the box increases by 1. Thereby, the refrigerant flowing through the outdoor heat exchanger is heated by exchanging heat with the air inside the box heated by the radiator. As a result, the heat dissipation capacity of the indoor heat exchanger increases, and the ability to heat the air blown into the room and heat the room increases.
［発明の効果］
本発明によれば、冷房運転時の室外熱交換器と暖房運転
時の室外熱交換器とを共通化した簡歩な構造で、環境温
度に関係なく室内を暖房することができる。[Effects of the Invention] According to the present invention, with a simple structure in which the outdoor heat exchanger during cooling operation and the outdoor heat exchanger during heating operation are shared, it is possible to heat the room regardless of the environmental temperature. can.
また、暖房運転時に箱体は開口部が閉じられるため、放
熱器の放った熱は室外熱交換器によって冷却される以外
に余り逃げないため、放熱器の放った熱が効率良く室内
熱交換器の冷媒を加熱させることかできる。In addition, since the opening of the box body is closed during heating operation, the heat emitted by the radiator does not escape other than being cooled by the outdoor heat exchanger, so the heat emitted by the radiator is efficiently transferred to the indoor heat exchanger. It is possible to heat the refrigerant.
［実施例］
次に、本発明の冷暖房装；αを図に示す一実施例に基づ
き説明する。[Example] Next, the heating and cooling system of the present invention; α will be described based on an example shown in the drawings.
第１図および第２図に冷暖房装置のヒートポンプ式冷凍
サイクルの冷媒回路図を示す。本実施例の冷暖房装置は
、運転室が３６０°回転するクレーン車等の土木作業車
両の運転室内の冷房および暖房を行うものである。この
ように運転室が３６０゜回転する土木作業車両は、油圧
アクチュエータの働きによって作業を行うため、油圧ア
クチュエータの油圧源として運転室と一体に回転する位
置に油圧ポンプを備える。FIGS. 1 and 2 show refrigerant circuit diagrams of a heat pump type refrigeration cycle of an air-conditioning device. The air conditioning system of this embodiment cools and heats the cab of a civil engineering vehicle such as a crane truck whose cab rotates 360 degrees. A civil engineering work vehicle in which the driver's cab rotates 360 degrees as described above performs work by the action of a hydraulic actuator, and therefore, a hydraulic pump is provided at a position that rotates together with the driver's cab as a hydraulic pressure source for the hydraulic actuator.
このような土木作業車両の多くは、ヒートポンプ式冷凍
サイクル１の冷媒圧縮機２が油圧モータ３によって駆動
される。冷媒圧縮機２は、図示しないオイルポンプから
供給される作動油によって回転トルクを発生する油圧モ
ータ３によって駆動されるもので、オイルポンプと油圧
モータ３とを結ぶ供給油路４に設けられた電磁弁５がＯ
Ｎすることによって、油圧モータ３に作動油が供給され
、冷媒圧縮機２が作動する。冷媒圧縮機２が作動すると
、吸入口６から冷媒を吸引し、圧縮して吐出ロアから吐
出させるものである。吐出ロアより吐出された冷媒は、
冷媒配管８を介して四方弁９へ導かれる。In many of such civil engineering work vehicles, the refrigerant compressor 2 of the heat pump type refrigeration cycle 1 is driven by a hydraulic motor 3. The refrigerant compressor 2 is driven by a hydraulic motor 3 that generates rotational torque using hydraulic oil supplied from an oil pump (not shown). Valve 5 is O
By turning N, hydraulic oil is supplied to the hydraulic motor 3, and the refrigerant compressor 2 is operated. When the refrigerant compressor 2 operates, it sucks refrigerant from the suction port 6, compresses it, and discharges it from the discharge lower. The refrigerant discharged from the discharge lower is
The refrigerant is guided to a four-way valve 9 via a refrigerant pipe 8.
この四方弁９は、冷房運転時にＯＩ’Ｆされ、四方弁９
へ導かれた冷媒を室外熱交換器１０へ導くとともに、室
内熱交換器１１から四方弁９へ導かれた冷媒を吸入口６
へ導く。また、暖房運転時にはＯＮされ、四方弁９へ導
かれた冷媒を室内熱交換器１１へ導くとともに、室外熱
交換器１０から四方弁９へ導かれた冷媒を吸入口６へ導
くものである。This four-way valve 9 is OI'Fed during cooling operation, and the four-way valve 9
The refrigerant introduced from the indoor heat exchanger 11 to the four-way valve 9 is introduced to the suction port 6.
lead to. It is also turned on during heating operation to guide the refrigerant introduced to the four-way valve 9 to the indoor heat exchanger 11 and guide the refrigerant introduced from the outdoor heat exchanger 10 to the four-way valve 9 to the suction port 6.
室外熱交換器１０は、冷媒と外気とを熱交換するもので
、箱体１２の内部に配設されている。The outdoor heat exchanger 10 exchanges heat between the refrigerant and the outside air, and is disposed inside the box 12.
この箱体１２は、箱体１２内へ外気を導く第１開口１３
と、箱体１２内の空気を箱体１２の外へ導く第２開口１
４とを備え、室外熱交換器１０は第１開口１３から箱体
１２内に侵入し、第２開口１４から再び箱体１２の外部
へ流出する外気（第１図の矢印Ａ参照）と熱交換するよ
うに設けられＣいる。第１開口１３および第２開口１４
には、それぞれの開口を開閉する板ダンパ１５．１６が
設けられている。この板ダンパ１５、１６はそれぞれサ
ーボモータ１７．１８（第３図参照）によって駆動され
るもので、サーボモータ１７．１８が叶［されることに
より、第１開口１３、第２開口１４が開き、サーボモー
タ１７．１８が０１４されることにより第１開口１３、
第２開口１４が閉じるものである。This box body 12 has a first opening 13 that introduces outside air into the box body 12.
and a second opening 1 that guides the air inside the box 12 to the outside of the box 12.
4, the outdoor heat exchanger 10 receives outside air (see arrow A in FIG. 1) and heat that enters the box 12 through the first opening 13 and flows out of the box 12 again through the second opening 14. It is provided to be replaced. First opening 13 and second opening 14
are provided with plate dampers 15 and 16 that open and close the respective openings. These plate dampers 15 and 16 are each driven by servo motors 17 and 18 (see Fig. 3), and when the servo motors 17 and 18 are actuated, the first opening 13 and the second opening 14 are opened. , the first opening 13 is opened by the servo motors 17 and 18 being 014,
The second opening 14 is closed.
また、箱体１２の内部には、第１開口１３から室外熱交
換器１０を通り、第２開口１４へ抜ける空気通路１９と
、この空気通路１９と並列な循環通路２０か設けられて
いる。この循環通路２０は、第１開口１３および第２開
口１４か徴ダンパ１５．１６によって塞がれた際、第２
図の矢印Ｂに示すように、箱体１２内の空気を空気通路
１９を介して循環させるものである。Further, inside the box body 12, an air passage 19 that passes through the outdoor heat exchanger 10 from the first opening 13 and exits to the second opening 14, and a circulation passage 20 that is parallel to the air passage 19 are provided. When the first opening 13 and the second opening 14 are blocked by the damper 15.16, the circulation passage 20
As shown by arrow B in the figure, air within the box body 12 is circulated through an air passage 19.
なお、箱体１２内には送風機２１が設けられ′ζおり、
送風機２１が作動することにより、室外熱交換器１０を
通過する空気流が発生する。Note that a blower 21 is provided inside the box body 12;
When the blower 21 operates, an air flow passing through the outdoor heat exchanger 10 is generated.
さらに、箱体１２の空気通路１９の室外熱交換器１０の
上流には、オイルクーラ２２が配設されている。Further, an oil cooler 22 is disposed in the air passage 19 of the box body 12 upstream of the outdoor heat exchanger 10.
このオイルクーラ２２は、冷媒圧縮機２を駆動するため
に供給された作動油の熱を逃がす本発明の放熱器で、供
給油路４を介して油圧ポンプ、冷媒圧縮機２に連結され
ている。供給油路４には、オイルクーラ２２をバイパス
させるバイパス油路２３が設＋ｆられている。このオイ
ルクーラ２２とバイパス油路２３との分岐路には電磁切
換弁２４か設けられており、この電磁切換弁２４を通電
することによりオイルクーラ２２に作動油が供給され、
通電を停止することによってバイパス油路？３にオイル
が流れ、オイルクーラ２２への作動油の供給が停止され
る。The oil cooler 22 is a radiator of the present invention that releases the heat of the hydraulic oil supplied to drive the refrigerant compressor 2, and is connected to the hydraulic pump and the refrigerant compressor 2 via the oil supply line 4. . The supply oil passage 4 is provided with a bypass oil passage 23 that bypasses the oil cooler 22. An electromagnetic switching valve 24 is provided in the branch path between the oil cooler 22 and the bypass oil passage 23, and by energizing the electromagnetic switching valve 24, hydraulic oil is supplied to the oil cooler 22.
Bypass oil line by de-energizing? 3, and the supply of hydraulic oil to the oil cooler 22 is stopped.
一方、室内熱交換器１１は、運転室内へ向かって空気を
吹き出す空気調和装置のダクＩ〜（図示しない）内に配
設され、運転室内に吹き出される空気と冷媒とを熱交換
するもので、ダクトの内部には運転室内に向かっ゛Ｃ空
気流を生じさぜる送風機２５を備える。On the other hand, the indoor heat exchanger 11 is disposed in a duct I~ (not shown) of an air conditioner that blows air into the driver's cab, and exchanges heat between the air blown into the driver's cab and the refrigerant. The inside of the duct is equipped with a blower 25 that generates an air flow toward the driver's cabin.
冷房運転時に室外熱交換器１０で外気と熱交換して凝縮
した冷媒は冷媒配管８、第１一方向弁２６、レシーバ２
７、第２一方向弁２８、第１減圧装置２９を介して室内
熱交換器１１へ導かれ、室内へ吹き出される空気より潜
熱を奪って蒸発する。また、暖房運転時に室内熱交換器
１１で室内へ吹き出される空気と熱交換して凝縮した冷
媒は冷媒配管８、第３一方向弁３０、レシーバ２７、第
４一方向弁３１、第２減圧装置３２を介して室外熱交換
器１０へ導かれ、室外熱交換器１０を通過する空気より
潜熱を奪って蒸発する。During cooling operation, the refrigerant that is condensed by exchanging heat with outside air in the outdoor heat exchanger 10 is sent to the refrigerant pipe 8, the first one-way valve 26, and the receiver 2.
7. The air is guided to the indoor heat exchanger 11 via the second one-way valve 28 and the first pressure reducing device 29, and evaporates by taking latent heat from the air blown into the room. In addition, during heating operation, the refrigerant that is condensed by exchanging heat with the air blown into the room by the indoor heat exchanger 11 is transferred to the refrigerant pipe 8, the third one-way valve 30, the receiver 27, the fourth one-way valve 31, and the second pressure reducing The air is guided to the outdoor heat exchanger 10 via the device 32, and evaporates by removing latent heat from the air passing through the outdoor heat exchanger 10.
第３図に上記実施例に示す電気機能部品の通電制御を行
う電気回路３３を示す。FIG. 3 shows an electric circuit 33 that controls energization of the electrical functional components shown in the above embodiment.
電磁弁５には常開リレースイッチ旧、四方弁９には常開
リレースイッチＲ２、サーボモータ１１．１８には常開
リレースイッチ１（３、送風機２１には常開リレースイ
ッチＲ４、電磁切換弁２４には常開リレースイッチＲ５
、送風機２５には常開リレースイッチＲ６がそれぞれ接
続され、常開リレースイッチＲ１−Ｒ６が閏じることに
より、それぞれが通電されるように設けられている。The solenoid valve 5 has a normally open relay switch (old), the four-way valve 9 has a normally open relay switch R2, the servo motor 11.18 has a normally open relay switch 1 (3), the blower 21 has a normally open relay switch R4, and a solenoid switching valve. 24 has a normally open relay switch R5
, a normally open relay switch R6 is connected to each of the blowers 25, and is provided so that each of them is energized by switching the normally open relay switches R1 to R6.
リレースイッチＲ１〜・Ｒ６は、マイクロプロセッサ３
４によって通電制御されるリレーコイルＣｌ−Ｃ６が通
電されることによって閏じちれる。Relay switches R1 to R6 are connected to the microprocessor 3
The relay coils Cl-C6 whose energization is controlled by the relay coils 4 and 4 are turned off by being energized.
マイクロプロセッサ３４は、運転室内の操作パネル（図
示しない）に取り付けられたモード切換スイッチ３５、
温度調節用ボリューム３６、室内温度センサ３７、室外
温度センサ３８からの信号に基づいてリレーコイル０１
〜Ｃ６を通電制御するものである。The microprocessor 34 includes a mode selector switch 35 attached to an operation panel (not shown) in the driver's cab;
Relay coil 01 based on signals from temperature adjustment volume 36, indoor temperature sensor 37, and outdoor temperature sensor 38
-C6 is used to control energization.
なお、モード切換スイッチ３５は、叶Ｆモード、送風モ
ード、冷房モート、暖房モードのポジションを備える。Note that the mode changeover switch 35 has the following positions: leaf F mode, ventilation mode, cooling mode, and heating mode.
なお、第３図における符号３９は車両電源であるバッテ
リ、勾号４０はメインスイッチ、符号４１は過電流より
回路を守るヒュースを示す。In FIG. 3, reference numeral 39 indicates a battery as the vehicle's power source, 40 indicates a main switch, and 41 indicates a fuse that protects the circuit from overcurrent.
次にマイクロプロセッサ３４の作動の一例を次の表１に
示す。なお、表中のＯはＯＮを示し、×は叶「を示し、
Ｃ００［およびＨＯＴは温度調節用ボリューム３６、室
内温度センサ３７、室外温度センサ３８の状態に応じて
ＯＮ、ＯＦＦが決定される通電状態を示す。Next, an example of the operation of the microprocessor 34 is shown in Table 1 below. In addition, O in the table indicates ON, × indicates "Ko",
C00 [and HOT indicate the energization state in which ON or OFF is determined according to the states of the temperature adjustment volume 36, the indoor temperature sensor 37, and the outdoor temperature sensor 38.
（以下余白）
表１
次に上記実施例の冷房運転時と暖房運転時の作動を説明
する。(Margins below) Table 1 Next, the operations of the above embodiment during cooling operation and heating operation will be explained.
イ）冷房運転時（第１図参照）
運転室内の乗員かモ・−ド切換スイッチ３５を操作して
冷房運転を指示すると、四方弁９が０［［されるととも
に、室内温度などに応じて電磁弁５がＯＮされ、油圧モ
ータ３が冷媒圧縮機２を駆動する。b) During cooling operation (see Figure 1) When a passenger in the driver's cab operates the mode selector switch 35 to instruct cooling operation, the four-way valve 9 is turned to 0 and the The solenoid valve 5 is turned on, and the hydraulic motor 3 drives the refrigerant compressor 2.
冷媒圧縮機２が駆動されると、冷媒圧縮機２の吐出ロア
より高温高圧の冷媒が吐出され、吐出された冷媒は、四
方弁９によって室外熱交換器１０に導かれる。When the refrigerant compressor 2 is driven, high temperature and high pressure refrigerant is discharged from the discharge lower of the refrigerant compressor 2, and the discharged refrigerant is guided to the outdoor heat exchanger 10 by the four-way valve 9.
一方、箱体１２は、冷房運転時にサーボモータ１７．１
８が叶［されて第１開口１３および第２開口１４が開き
、送風機２１の作動により第１図の矢印Ａに示すように
外気が室外熱交換器１０と熱交換される。このとき、電
磁切換弁２４か０「［されているため、オイルクーラ２
２への作動油の供給は停止され、空気通路１９内の室外
熱交換器１０の上流で、オイルクーラ２２が放熱するの
が阻止される。On the other hand, the box body 12 is operated by the servo motor 17.1 during cooling operation.
8 is opened, the first opening 13 and the second opening 14 are opened, and the air blower 21 is operated to exchange heat with outside air with the outdoor heat exchanger 10 as shown by arrow A in FIG. At this time, the solenoid switching valve 24 is set to 0, so the oil cooler 2
2 is stopped, and the oil cooler 22 is prevented from dissipating heat upstream of the outdoor heat exchanger 10 in the air passage 19.
これにより、室外熱交換器１０に導がれな冷媒と箱体１
２の外部から導かれた外気とが熱交換され、冷媒が液化
凝縮する。室外熱交換器１０で液化した冷媒はレシーバ
２７、第１減圧装置？９を介して室内熱交換器１１へ流
入する。室外熱交換器１０で液化され、レシーバ２７で
液冷媒のみとされた冷媒は、第１減圧装置２９を通過す
る際に断熱膨張し、低温低圧の霧状冷媒となって、室内
熱交換器１１内へ流入する。This prevents the refrigerant from being introduced into the outdoor heat exchanger 10 and the box body 1.
Heat is exchanged with the outside air introduced from the outside of the refrigerant, and the refrigerant is liquefied and condensed. The refrigerant liquefied in the outdoor heat exchanger 10 is sent to the receiver 27 and the first pressure reducing device? 9 into the indoor heat exchanger 11. The refrigerant that is liquefied in the outdoor heat exchanger 10 and reduced to only liquid refrigerant in the receiver 27 expands adiabatically when passing through the first pressure reducing device 29 and becomes a low-temperature, low-pressure atomized refrigerant, which is then transferred to the indoor heat exchanger 11. flow inward.
室内熱交換器１１内へ流入した冷媒は、空気調和装置の
ダクト内を流れる運転室内へ吹き出される空気から潜熱
を奪って蒸発する。これにより運転室内へ吹き出される
空気が冷却されて、運転室内が冷房される。The refrigerant that has flowed into the indoor heat exchanger 11 evaporates by removing latent heat from the air that flows through the duct of the air conditioner and is blown into the driver's cabin. As a result, the air blown into the driver's cabin is cooled, and the inside of the driver's cabin is cooled.
そして、室内熱交換器１１内で蒸発が完了した冷媒は、
四方弁９を介して冷媒圧縮機２の吸入口６へ導かれ、上
記サイクルを繰り返ず。Then, the refrigerant that has completed evaporation in the indoor heat exchanger 11 is
The refrigerant is guided to the suction port 6 of the refrigerant compressor 2 via the four-way valve 9, and the above cycle is repeated.
口）暖房運転時（第２図参照）
運転室内の乗員がモード切換スイッチ３５を操作して暖
房運転を指示すると、四方弁９がＯＮされるとともに、
室内温度などに応じて電磁弁５がＯＮされ、油圧モータ
３が冷媒圧縮機２を駆動する。冷媒圧縮機２が駆動され
ると、冷媒圧縮機２の吐出ロアより高温高圧の冷媒が吐
出され、吐出された冷媒は、四方弁９によって室内熱交
換器１１に導かれる。室内熱交換器１１内へ導かれた冷
媒は、空気調和装置のダクト内を流れ、運転室内へ吹き
出される空気に潜熱を奪われて液化凝縮する。そして、
冷媒から潜熱を奪−）で加熱された空気は運転室内へ吹
き出され、運転室内を暖房する。(See Figure 2) When the occupant in the driver's cab operates the mode selector switch 35 to instruct heating operation, the four-way valve 9 is turned on, and
The solenoid valve 5 is turned on depending on the room temperature, etc., and the hydraulic motor 3 drives the refrigerant compressor 2. When the refrigerant compressor 2 is driven, high temperature and high pressure refrigerant is discharged from the discharge lower of the refrigerant compressor 2, and the discharged refrigerant is guided to the indoor heat exchanger 11 by the four-way valve 9. The refrigerant guided into the indoor heat exchanger 11 flows through the duct of the air conditioner, loses its latent heat to the air blown into the driver's cabin, and liquefies and condenses. and,
The air heated by removing latent heat from the refrigerant is blown into the driver's cabin, heating the driver's cabin.
室内熱交換器１１で液化した冷媒は、レシーバ２７、第
２減圧装置３２を介して室外熱交換器１０内へ流入する
。室内熱交換器１１で液化され、レシーバ２７で液冷媒
のみとされた冷媒は、第２減圧装置３２を通過する際に
断熱膨張し、低温低圧の霧状冷媒となって、室外熱交換
器１０内ｌ＼流入する。The refrigerant liquefied in the indoor heat exchanger 11 flows into the outdoor heat exchanger 10 via the receiver 27 and the second pressure reducing device 32 . The refrigerant that is liquefied in the indoor heat exchanger 11 and reduced to only liquid refrigerant in the receiver 27 expands adiabatically when passing through the second pressure reducing device 32 and becomes a low-temperature, low-pressure mist refrigerant that is transferred to the outdoor heat exchanger 10. Inflow.
一方、箱体１２は、暖房運転時にサーボモータ１７．１
８がＯＮされて第１開ｌ］１３および第２開ｌ」１４が
閉じられる。すると、箱体１２内は送風機２１の作動に
より第２図の矢印Ｂに示すように、箱体１２内の空気が
室外熱交換器１０、オイルクーラ２２を介して循環する
。また、この暖房運転時では、電磁切換弁２４がＯＮさ
れているため、オイルクーラ２２へ作動油が供給され、
室外熱交換器１０の」−流て、オイルクーラ２２が放熱
する。On the other hand, the box body 12 is operated by the servo motor 17.1 during heating operation.
8 is turned on, the first opening 1] 13 and the second opening 14 are closed. Then, the air inside the box 12 is circulated through the outdoor heat exchanger 10 and the oil cooler 22 as shown by arrow B in FIG. 2 due to the operation of the blower 21. In addition, during this heating operation, since the electromagnetic switching valve 24 is turned on, hydraulic oil is supplied to the oil cooler 22.
The oil cooler 22 radiates heat from the outdoor heat exchanger 10.
これにより、オイルクーラ２２の放熱した熱は第２図の
矢印Ｂに示すように箱体１２内を循環するとともに、室
外熱交換器１０と熱交換する。As a result, the heat radiated by the oil cooler 22 circulates within the box 12 as shown by arrow B in FIG. 2, and is exchanged with the outdoor heat exchanger 10.
この結果、室外熱交換器１０内へ流入した冷媒は箱体１
２内を循環する空気がら潜熱を奪−って加熱され、加熱
されて蒸発が完了した冷媒は、四方弁９を介して冷媒圧
縮機２の吸入に１６へ導かれ、上記サイクルを繰り返す
。As a result, the refrigerant flowing into the outdoor heat exchanger 10
The refrigerant that has been heated by removing latent heat from the air circulating in the refrigerant compressor 2 and has completed evaporation is guided to the suction 16 of the refrigerant compressor 2 via the four-way valve 9, and the above cycle is repeated.
本実施例によれば、オイルクーラ？２が放熱した熱は、
室外熱交換器１０によって冷却される以外に箱体１２内
から余り逃げないため、オイルクーラ２２の放った熱か
効率良く室外熱交換器１０の冷媒を加熱する。これによ
り外気温度に関係なくオイルクーラ２２の放熱した熱に
より、室外熱交換？；１０による冷媒の蒸発が行われる
ため、外気温度が低い場合でも、運転室内の暖房能力を
低下させることかない。According to this embodiment, the oil cooler? The heat radiated by 2 is
Since not much escapes from inside the box body 12 other than being cooled by the outdoor heat exchanger 10, the heat emitted by the oil cooler 22 efficiently heats the refrigerant in the outdoor heat exchanger 10. This allows outdoor heat exchange using the heat radiated by the oil cooler 22 regardless of the outside air temperature. ; Since the refrigerant is evaporated according to step 10, the heating capacity inside the driver's cabin will not be reduced even when the outside temperature is low.
また、本実施例では、従来、環境温度に関係なく室内を
暖房するために用いられてきた冷却水や、オイルと冷媒
どを熱交換さぜる熱交換器を廃止し、冷房運転時の室外
熱交換器と暖房運転時の室外熱交換器とを共通化して環
境温度に関係なく室内を暖房することができるため、暖
房能力の大きなヒートポンプ式冷凍サイクル１の構造を
簡単にすることかできる。また、運転室内に配設される
ダクト内に室内熱交換器１１以外の放熱器が配されない
ため、ダクトを小形化することができ、狭い運転室内を
空気調和装置の設置によりさらに狭くするのを防ぐこと
かできる。In addition, this embodiment eliminates the heat exchanger that exchanges heat between cooling water, oil, and refrigerant, which were conventionally used to heat the room regardless of the environmental temperature, and Since the heat exchanger and the outdoor heat exchanger during heating operation can be shared and the room can be heated regardless of the environmental temperature, the structure of the heat pump type refrigeration cycle 1 having a large heating capacity can be simplified. In addition, since no radiator other than the indoor heat exchanger 11 is disposed in the duct installed in the driver's cab, the duct can be made smaller, making it easier to make the narrow driver's cabin even narrower due to the installation of an air conditioner. It can be prevented.
さらに、暖房運転時に箱体１２の開口部１３．１４が閉
じられるため、オイルクーラ２２の放・った熱は室外熱
交換器１０によって冷却される以外に余り逃げない。こ
のため、オイルクーラ２２の放った熱が効率良く室外熱
交換器１０内の冷媒を加熱することができる。また、箱
体１２内の空気は、室外熱交換器１０を介して循環する
ように設けられているため、オイルクーラ２２によ・っ
て加熱された空気と冷媒との熱交換効率を向上させるこ
とかできる。Furthermore, since the openings 13 and 14 of the box body 12 are closed during heating operation, the heat released by the oil cooler 22 does not escape much other than being cooled by the outdoor heat exchanger 10. Therefore, the heat emitted by the oil cooler 22 can efficiently heat the refrigerant in the outdoor heat exchanger 10. Moreover, since the air inside the box body 12 is provided to circulate through the outdoor heat exchanger 10, the heat exchange efficiency between the air heated by the oil cooler 22 and the refrigerant is improved. I can do it.
（変形例）
放熱器として作動油を冷却するオイルクーラを用いた例
を示したが、エンジン冷却水を冷却するヒータコア、Ｐ
ＴＣヒータ等の電気ヒータ、燃焼用ヒータなど、他の放
熱器を用いても良い。(Modified example) Although an example using an oil cooler that cools hydraulic oil as a radiator has been shown, a heater core that cools engine cooling water, P
Other radiators such as electric heaters such as TC heaters, combustion heaters, etc. may also be used.
本発明を運転室が３６０°回転するクレーン車に適用し
た例を示したが、池の土木ｆｊ業重車両、冷媒圧縮機を
エンジンによ−って駆動する自動車、鉄道車両、船舶等
に適用しても良い。Although we have shown an example in which the present invention is applied to a crane truck whose driver's cab rotates 360 degrees, it is also applicable to heavy civil engineering vehicles, automobiles, railway vehicles, ships, etc. in which a refrigerant compressor is driven by an engine. You may do so.
第１図は冷暖房装置の冷房運転時を示す冷媒回路図、第
２図は冷暖房装置の暖房運転時を示す冷媒回路図、第３
図は冷暖房装置の電気回路図である。
図中 １・・・ヒートポンプ式冷凍サイクル１０・・・
室外熱交換器 １１・・・室内熱交換器１２・・・箱体
１３・・・第１開口１４・・・第２開口
２２・・・オイルクーラ（放熱器）Figure 1 is a refrigerant circuit diagram showing when the air conditioner is in cooling operation; Figure 2 is a refrigerant circuit diagram when the air conditioner is in heating operation; Figure 3 is a refrigerant circuit diagram when the air conditioner is in heating operation.
The figure is an electrical circuit diagram of the heating and cooling device. In the diagram 1...Heat pump type refrigeration cycle 10...
Outdoor heat exchanger 11... Indoor heat exchanger 12... Box 13... First opening 14... Second opening 22... Oil cooler (radiator)
Claims (1)
運転時に冷媒蒸発器として働く室外熱交換器を備えたヒ
ートポンプ式冷凍サイクルと、 （ｂ）暖房運転時に熱を放熱する放熱器と、（ｃ）前記
室外熱交換器と前記放熱器とを収容するとともに、開口
部を備え、冷房運転時に前記開口部を開き、暖房運転時
に前記開口部を閉じる箱体と を具備する冷暖房装置。[Scope of Claims] 1) (a) A heat pump refrigeration cycle equipped with an outdoor heat exchanger that functions as a refrigerant condenser during cooling operation and as a refrigerant evaporator during heating operation, and (b) radiates heat during heating operation. (c) a box body that accommodates the outdoor heat exchanger and the radiator and has an opening, opens the opening during cooling operation, and closes the opening during heating operation. heating and cooling equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16022188A JPH0210069A (en) | 1988-06-28 | 1988-06-28 | Chilling and heating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16022188A JPH0210069A (en) | 1988-06-28 | 1988-06-28 | Chilling and heating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0210069A true JPH0210069A (en) | 1990-01-12 |
Family
ID=15710340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16022188A Pending JPH0210069A (en) | 1988-06-28 | 1988-06-28 | Chilling and heating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0210069A (en) |
-
1988
- 1988-06-28 JP JP16022188A patent/JPH0210069A/en active Pending
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