JPS62228853A - Antifreezing device in forced water circulating duct - Google Patents
Antifreezing device in forced water circulating ductInfo
- Publication number
- JPS62228853A JPS62228853A JP7234386A JP7234386A JPS62228853A JP S62228853 A JPS62228853 A JP S62228853A JP 7234386 A JP7234386 A JP 7234386A JP 7234386 A JP7234386 A JP 7234386A JP S62228853 A JPS62228853 A JP S62228853A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- water
- heat exchanger
- pipe
- forced
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 35
- 238000007710 freezing Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 11
- 230000008014 freezing Effects 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000002528 anti-freeze Effects 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005192 partition Methods 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Landscapes
- Pipeline Systems (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、例えばピー１−ポンプ式冷凍機にＪ３ける構
成要県の一つで、サイクルの切換えによって蒸発器とし
て、又は凝縮器として作用する冷媒−水熱交換器に連絡
された水循環路系の水を、例えばレーザー加工機など保
冷又は保温を必要とする装置側の熱交換器に循環ポンプ
を介して強制的に圧送するにう構成された強制水垢ｙ：
Ｉ管路等であって、詳しくは、冷却又は加熱用熱交換器
と被冷却又は被加熱用熱交換器との間に亘る循環管路中
に、冷７Ｊｌ水又は加熱水を強制循環させる主ポンプを
介装してある強制水循環路の＾な記主ポンプ停ＪＬ１０
における凍結防止装置に関Ｊ゛る。Detailed Description of the Invention (Field of Industrial Application) The present invention is applicable to, for example, one of the main components of a P-1 pump type refrigerator in J3, which operates as an evaporator or a condenser by switching the cycle. A configuration in which water in a water circulation system connected to a refrigerant-water heat exchanger is forcibly pumped through a circulation pump to a heat exchanger on the side of equipment that requires cold or warm insulation, such as a laser processing machine. Forced limescale:
I pipe, etc., specifically, a main pipe that forcibly circulates cold 7Jl water or heated water in a circulation pipe that spans between a cooling or heating heat exchanger and a cooled or heated heat exchanger. The main pump stop JL10 of the forced water circulation path with a pump installed
Regarding anti-freezing equipment in
（従来の技術）
上記の如き強制水循環路において、前記主−Ｉｌ？ンブ
の停止時に周囲温度が摂氏零度近くに降下すると、前記
管路内の水が凍結し、体積膨張ににって管路が破裂する
とか、亀裂が入るなどの事故を発生Ｊる可能性がある。(Prior Art) In the forced water circulation path as described above, the main -Il? If the ambient temperature drops to near zero degrees Celsius when the pump is stopped, the water in the pipes may freeze, causing volumetric expansion that may cause the pipes to rupture or crack. be.
このような凍結事故防止対策として従来から実施され−
Ｃいるしのに、■管路の一部にヒーターを付設したもの
、■実公昭／ｌ ８−３９１３７ Ｑ公報で開示されて
いるように、循環用の主ポンプを作動させて管路水をフ
［１−さけるように構成したもの等りく知られている。Conventionally, measures to prevent such freezing accidents have been implemented.
C, ■ one with a heater attached to a part of the pipe, ■ Jitsukosho/l 8-39137 As disclosed in the Q bulletin, the main pump for circulation is operated to drain the pipe water. It is well known that the structure is configured to avoid f[1-.
（発明か解決しようとりる問題点）
しかしながら、前者■のｌ賜金は′電気配線、安全装四
などを要し、またヒーターの何段場所の選定もむずかし
くて実用的でないばかりでなく、凍結防止に多くの消費
電力を要づる。また、１ｆ：を名■の場合は、凍結防止
に必要かつ充分な流量に対して違かに高揚程、高流量の
循環用主ポンプを作動させるが故に、ポンプの運転経費
が必要以上に崇み、かつ該主ポンプの耐久性の面でも不
利な結果をＩＢぎ易い欠点があった。(Problem to be solved by invention) However, the former (1) requires electrical wiring, safety equipment, etc., and it is difficult to select the number of heater locations, making it not only impractical but also difficult to prevent freezing. This requires a lot of power consumption. In addition, in the case of 1f:, the main circulation pump is operated at a higher head and flow rate compared to the necessary and sufficient flow rate for anti-freezing, so the operating cost of the pump is unnecessarily high. However, it also has the drawback that it is likely to cause disadvantageous results in terms of the durability of the main pump.
本発明はかかる実情に鑑み、構成簡単で、しかも省エネ
ルＡ”−のらとで所期の凍結防止を確実に実現できる凍
結防止装置を提供する点に目的を有する。In view of the above circumstances, it is an object of the present invention to provide an anti-freezing device which has a simple structure and can reliably achieve the desired anti-freezing effect with an energy-saving A''-rate.
（問題点を解決するための手段）
上記の目的を達成するために、本発明に係る強制水垢Ｉ
Ｍ管路に４３ける凍結防止装置は、冒頭詳記のような基
本構成を右するしのにおいて、循環管路中に、主ポンプ
の停止時にＪ’５ける周囲温度が設定温度以下のとぎに
作動する凍結防止用補助ポンプを、前記主ポンプと直列
に介装するとともに、前記両ポンプをともに非容積型ポ
ンプで構成したという点に特徴を有するものである。(Means for Solving the Problems) In order to achieve the above object, forced lime scale I according to the present invention
The antifreeze device in pipe M has the basic configuration as described in detail at the beginning, and is installed in the circulation pipe when the main pump is stopped and the ambient temperature at pipe J'5 is below the set temperature. The present invention is characterized in that an auxiliary antifreeze pump that operates is interposed in series with the main pump, and both pumps are non-displacement pumps.
つまり、上述の特徴構成を右でる本発明に係る装置を第
１図の概念図をもとに説明すると、（１）は冷却又は加
熱用熱交換器であって、冷却源又は加熱源を有する。（
２）は被冷却又は被加熱用熱交換器であって、レーザー
加工磯などの高熱を発生する装置又は熱を放出する装置
に連絡されている。（３）は前記画然交換器（１）、（
２＞間に亘って接続形成された往遠二系統の循環管路で
ある。（４）は前記循環管路（３）の往管路部分（３△
）に介装した冷部水又は加熱水強制循環用の非容積型主
ポンプであって、高揚程、高温化である。（５）は前記
循環管路〈３）の主ポンプ（４）吸込側の往管路部分（
３Ａ）に前記主ポンプ（４）と直列の状態で介装した凍
結防止用の非容積型補助ポンプであって、低揚程で低抵
抗であるとともに、前記主ポンプ（４）の停止時におけ
る周囲（雰囲気）温度を検出する温度センサー（６）の
検出温度が設定温度（０’ Ｃ付近〉以下になったどぎ
に作動するように構成されている。In other words, if the device according to the present invention having the above-mentioned characteristic configuration is explained based on the conceptual diagram of FIG. 1, (1) is a cooling or heating heat exchanger, which has a cooling source or a heating source. . (
2) is a heat exchanger for being cooled or heated, and is connected to a device that generates high heat such as a laser processing rock or a device that emits heat. (3) is the above-mentioned Gazen exchanger (1), (
2> This is a two-way circulation pipe connected between the two. (4) is the outgoing pipe section (3△
) is a non-displacement type main pump for forced circulation of cold water or heated water, which is installed in a pump with high head and high temperature. (5) is the outgoing pipe section on the main pump (4) suction side of the circulation pipe <3) (
3A) is a non-displacement type auxiliary pump for anti-freezing installed in series with the main pump (4), which has a low head and low resistance, and has a low lift and a low resistance to the surroundings when the main pump (4) is stopped. It is configured to operate as soon as the temperature detected by a temperature sensor (6) that detects (atmosphere) temperature falls below a set temperature (near 0'C).
（作用）
このような１．！１徴構成を有する本発明に係る強制水
循環路に４３ける凍結防止装置によれば、通常運転時は
、前者熱交換器（１）で生成された冷却水又は加熱水が
前記主ポンプ（４）によってｆｆ２青熱交換器（２）に
強制的に送給され、この後者熱交換器（２）での熱交換
により昇温又は薪温した水が＠名熱交換ｉ’！９（１）
に帰還されるといったように、前記管路（３）内を強制
循環される。また、かかる強制循環運転の停止時におい
て、周囲′ｌＢ度が設定温）女以１；になると、温度セ
ンサー（６）からの４ｉｉ号を受けて前記補助ポンプ（
５）が作動開始して、面記管路〈３）内の水が循Ｉ′！
：４することになり、水の凍結が防止される。そして、
水の士ポンプ（／Ｉ）による通電循環時及び凍結防止の
ための補助ポンプ（５〉による循環時の何れにおいても
、一方のポンプ（５〉及び（４）は作動しないが、それ
らがともに非容積型であるから、通水抵抗ははとｌυど
なく、スムーズなｉｌＩ！ｉ環が行える乙のである。(Effect) 1. ! According to the antifreeze device in the forced water circulation path 43 of the present invention having a one-character configuration, during normal operation, the cooling water or heated water generated in the former heat exchanger (1) is transferred to the main pump (4). The water is forcibly fed to the ff2 blue heat exchanger (2) by the heat exchanger (2), and the water whose temperature is raised or warmed by firewood through heat exchange in the latter heat exchanger (2) is sent to the @name heat exchange i'! 9(1)
It is forcibly circulated within the pipe (3), such as being returned to the water. In addition, when the forced circulation operation is stopped, if the ambient temperature reaches 1 below the set temperature, the auxiliary pump (
5) starts to operate, and the water in the surface pipe 〈3) circulates I'!
:4, which prevents water from freezing. and,
One of the pumps (5> and (4) does not operate either during energized circulation using the water pump (/I) or during circulation using the auxiliary pump for freezing prevention (5>), but both pumps are non-operating. Since it is a volumetric type, there is no water flow resistance, and a smooth flow can be achieved.
（実施例〉
以−ト、本発明の実施例を、冷凍磯による冷却水供給ユ
ニットにおける冷却器が前記冷却用熱交換器（１）とな
るように構成し！ζものについて具体的に詳述する。(Embodiment) Hereinafter, an embodiment of the present invention will be specifically described in detail, in which the cooler in the cooling water supply unit using frozen rock is configured as the cooling heat exchanger (1). do.
第２図において、（７）は圧縮機、（８）。In FIG. 2, (7) is a compressor, and (8).
（９）はファンモータ（８△）、（９△〉を備えた２つ
の空気熱源式の凝縮器であり、各々前記圧縮機（７）の
吐出側に並列に接続されている。(9) are two air heat source type condensers equipped with fan motors (8△) and (9△>), each of which is connected in parallel to the discharge side of the compressor (7).
（１０）は受液器であり、前記両凝給田（８）。(10) is a liquid receiver, and both coagulation fields (8).
（９）で凝縮された高圧冷媒液を合流させる。The high-pressure refrigerant liquid condensed in (9) is merged.
（１１）は感温膨張弁、（１）は前記の冷却用熱交換器
（冷却器）、（１２＞はアキュムレータであって、これ
らの各構成要素は、高圧冷媒ガス管（１３）、ｎｆｆＥ
冷媒’ａ７１ （１４） 、 冷ＷＨ管（１５）、及び
低圧冷媒ガス管（１６）により夫々順次接続されている
。以上の各構成要素及び配管系からなる冷凍機における
冷凍サイクル作用は周知であるため、ここでは記載を省
略する。(11) is a temperature-sensitive expansion valve, (1) is the cooling heat exchanger (cooler), (12> is an accumulator, and each of these components is a high-pressure refrigerant gas pipe (13), nffE
The refrigerant 'a71 (14), the cold WH pipe (15), and the low pressure refrigerant gas pipe (16) are connected in sequence. Since the refrigeration cycle operation in the refrigerator consisting of the above-mentioned components and piping system is well known, the description thereof will be omitted here.
上記の冷凍機にＪ３いて、冷却水供給ユニットの主要構
成の１つである前記冷却用熱交換器（１）は次のように
構成されている。In the above refrigerator J3, the cooling heat exchanger (1), which is one of the main components of the cooling water supply unit, is constructed as follows.
即ち、液面計又はレベルスイッヂ（１７）により常に略
一定液面レベルの水が保持されるように構成された水槽
（１Ａ）内に隔壁（１Ｂ）を、その上端縁が前記液面レ
ベルよりもやや低位に位置Ｊる状態に設けて、該隔壁（
１Ｂ）によって仕切られた画室をオーバーフロー形態に
連通させ、そのうちの一方の仕切室内に、冷媒液管（１
５）と低圧冷媒ガス管（１６）とを連絡づる冷媒−水間
接熱交換器（ＩＣ）を挿設するとともに、該仕切室内の
底部に、循環管路（３）の往管路部分（３Ａ）の一端を
間口接続し、かつ他方の仕切室内に、前記循環管路（３
）の遠管路部分く３Ｂ）の終端を間口接続したものであ
る。図中（２０）はフィルター、（２１）は湿度調節器
であって、高圧冷媒ガス管（１３）から分岐され、前記
膨張弁（１１）下流の冷媒液管（１５）に合流接続され
たホットガス供給管（２２）中に介在した電磁弁く２３
）を自動的に開閉して冷却負荷変動に対応させるもので
ある。That is, a partition wall (1B) is placed in a water tank (1A) configured so that water is always maintained at a substantially constant liquid level using a liquid level gauge or a level switch (17), and the upper edge of the partition wall (1B) is placed above the liquid level. The partition wall (
The compartments partitioned by
A refrigerant-water indirect heat exchanger (IC) connecting the refrigerant gas pipe (16) and the low-pressure refrigerant gas pipe (16) is installed at the bottom of the partition chamber. ) is connected to one end of the circulation pipe (3), and the circulation pipe (3
The terminal end of the far pipe section 3B) of 3B) is connected with the frontage. In the figure, (20) is a filter, and (21) is a humidity controller, which is branched from the high-pressure refrigerant gas pipe (13) and connected to the refrigerant liquid pipe (15) downstream of the expansion valve (11). A solenoid valve 23 interposed in the gas supply pipe (22)
) to respond to cooling load fluctuations by automatically opening and closing.
尚、上記の冷却用熱交換器（１）以外の冷却供給ユニッ
トの各主要構成に関しては、既）ホの概念図で示した各
構成と機能上、何等変わらないため、第１図で使用した
と同一の部品ｆｆｉ ｑを付することにより、詳細説明
は省略する。The main components of the cooling supply unit other than the above-mentioned cooling heat exchanger (1) are functionally the same as those shown in the conceptual diagram in (e) above, so they are used in Figure 1. Detailed explanation will be omitted by assigning the same parts ffi q as .
第３図は、本発明の別の実施例を概念的に示した乙のぐ
、循環管路（３）内の水徂を一定に保持し、かつ膨張を
吸収するために、ポールタップ式の自助給水機構（１８
）付きの膨張タンク（１９）を前記循環管路（３）に接
続配設したものである。FIG. 3 conceptually shows another embodiment of the present invention, in which a pole tap type is used to maintain a constant water range in the circulation pipe (3) and absorb expansion. Self-help water supply mechanism (18
) is connected to the circulation pipe (3).
また、前記熱交換器（１）が電気ヒーターやガス燃焼装
置等を備えた水加熱用であり、前記熱交換器（２）が加
熱水によって保温される床暖房ユニットパネルなどの被
加熱器であっても良い。In addition, the heat exchanger (1) is for water heating equipped with an electric heater, a gas combustion device, etc., and the heat exchanger (2) is a heated device such as a floor heating unit panel that is kept warm by heated water. It's okay to have one.
更に、前記熱交換器（１）が、可逆形ヒートポンプ式冷
凍装置の構成要素の一つで、サイクル切換えによって蒸
発器として又は凝縮器として選択的に作用するものであ
って゛し良い。Furthermore, the heat exchanger (1) may be one of the components of a reversible heat pump type refrigeration system, and may selectively function as an evaporator or a condenser by switching cycles.
更にまた、前記補助ポンプ（５）を、前記主ポンプ（４
）の吸込側、に配置する時は、主ポンプ（４）作動時に
Ｊｊ ＬＪる補助ポンプ（５）による通水抵抗を一層小
さくできるとともに、主ポンプ（４）の吐出圧が作用せ
ず低圧の吸込圧が補助ポンプ（５）に作用するだけであ
るので、補助ポンプ（５）はこの吸込圧に耐える強度で
済み安価なポンプを使用できる利点がある。但し、本発
明はこのよ・）な配置を特に限定しないしのである。Furthermore, the auxiliary pump (5) may be replaced with the main pump (4).
), when the main pump (4) is activated, the water flow resistance caused by the auxiliary pump (5) can be further reduced, and the discharge pressure of the main pump (4) is not applied, resulting in low-pressure Since the suction pressure only acts on the auxiliary pump (5), the auxiliary pump (5) needs to be strong enough to withstand this suction pressure, and there is an advantage that an inexpensive pump can be used. However, the present invention is not particularly limited to such an arrangement.
（発明の効果）
以上の説明からも既に明らかにされたように、本発明に
Ｊこれば、通常の強制循環運転停止時における管路内水
の凍結防止対策として、高揚程、高流量の主ポンプとは
別個に凍結防止専用の低揚程補助ポンプを用いることに
Ｊ、って、既記の従来対策に比べて、消費エネルギーを
節減し、全体の運転経費を最小限に止めながら、所期の
凍結防止を確実に達成できる。しかも、主、補助画ポン
プともに非容積型のものを使用することによって、それ
らを直列に配置べするといった（石く簡単な配管構成を
採りながらも、いずれのポンプの作動時にＪ３いても作
動停止側ポンプの存在に起因した通水抵抗ロスを回避で
き、これににって、上述の省エネルギー効果、省ランニ
ング効果を確実に実現しく７るのである。(Effects of the Invention) As already clarified from the above explanation, if the present invention is applied, it will be possible to prevent the water in the pipe from freezing when the normal forced circulation operation is stopped. Compared to the conventional measures mentioned above, using a low-lift auxiliary pump for anti-freezing separately from the pump saves energy consumption and minimizes overall operating costs while achieving the desired results. Freezing prevention can be reliably achieved. Moreover, by using non-displacement type pumps for both the main and auxiliary pumps, they can be arranged in series (despite adopting a fairly simple piping configuration, J3 stops operating when either pump is activated). Water flow resistance loss due to the presence of the side pump can be avoided, and thereby the above-mentioned energy saving effect and running saving effect can be reliably realized.
第１図は本発明の構成を示す概念図、第２図は本発明実
施例の配管系統図、第３図は別の実施例を示づ構成概念
図である。
（１）・・・冷却又は加熱用熱交換器、（２）・・・被
冷却又は被加熱用熱交換器、（３）・・・循環管路、（
４〉・・・主ポンプ、（５）・・・補助ポンプ。FIG. 1 is a conceptual diagram showing the configuration of the present invention, FIG. 2 is a piping system diagram of an embodiment of the present invention, and FIG. 3 is a conceptual diagram of the configuration of another embodiment. (1)...Heat exchanger for cooling or heating, (2)...Heat exchanger for being cooled or heated, (3)...Circulation pipe line, (
4>...Main pump, (5)...Auxiliary pump.
Claims (2)
熱用熱交換器（２）との間に亘る循環管路（３）中に、
冷却水又は加熱水を強制循環させる主ポンプ（４）を介
装してある強制水循環管路において、前記循環管路（３
）中に、前記主ポンプ（４）の停止時における周囲温度
が設定温度以下のときに作動する凍結防止用補助ポンプ
（５）を、前記主ポンプ（４）と直列に介装するととも
に、前記両ポンプ（４）、（５）をともに非容積型ポン
プで構成したことを特徴とする強制水循環管路における
凍結防止装置。(1) In the circulation pipe (3) spanning between the cooling or heating heat exchanger (1) and the cooled or heated heat exchanger (2),
In a forced water circulation pipe in which a main pump (4) for forced circulation of cooling water or heated water is interposed, the circulation pipe (3
), an auxiliary anti-freezing pump (5) that operates when the ambient temperature is below the set temperature when the main pump (4) is stopped is installed in series with the main pump (4); A freezing prevention device for a forced water circulation pipe, characterized in that both pumps (4) and (5) are non-displacement pumps.
配置されている特許請求の範囲第（１）項に記載の強制
水循環路における凍結防止装置。(2) The antifreeze device in a forced water circulation path according to claim (1), wherein the auxiliary pump (5) is arranged on the suction side of the main pump (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7234386A JPS62228853A (en) | 1986-03-29 | 1986-03-29 | Antifreezing device in forced water circulating duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7234386A JPS62228853A (en) | 1986-03-29 | 1986-03-29 | Antifreezing device in forced water circulating duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62228853A true JPS62228853A (en) | 1987-10-07 |
Family
ID=13486557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7234386A Pending JPS62228853A (en) | 1986-03-29 | 1986-03-29 | Antifreezing device in forced water circulating duct |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62228853A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0275875A (en) * | 1988-09-10 | 1990-03-15 | Hoshizaki Electric Co Ltd | Preventing method for freezing of constant-temperature and high moisture refrigerator |
| JPH06341782A (en) * | 1993-05-18 | 1994-12-13 | Nec Corp | Refrigerant circulating structure |
-
1986
- 1986-03-29 JP JP7234386A patent/JPS62228853A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0275875A (en) * | 1988-09-10 | 1990-03-15 | Hoshizaki Electric Co Ltd | Preventing method for freezing of constant-temperature and high moisture refrigerator |
| JPH06341782A (en) * | 1993-05-18 | 1994-12-13 | Nec Corp | Refrigerant circulating structure |
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