JPS634925Y2 - - Google Patents
Info
- Publication number
- JPS634925Y2 JPS634925Y2 JP8385781U JP8385781U JPS634925Y2 JP S634925 Y2 JPS634925 Y2 JP S634925Y2 JP 8385781 U JP8385781 U JP 8385781U JP 8385781 U JP8385781 U JP 8385781U JP S634925 Y2 JPS634925 Y2 JP S634925Y2
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- storage tank
- water storage
- temperature
- heat
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 79
- 238000009835 boiling Methods 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 description 7
- 230000006866 deterioration Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
Landscapes
- Heat-Pump Type And Storage Water Heaters (AREA)
Description
【考案の詳細な説明】
本考案は、下部に流出口を設け、かつ上部に流
入口を設けた貯湯タンクと、一端が循環ポンプを
介して貯湯タンクの流出口に配管接続され、かつ
他端が前記貯湯タンクの流入口に配管接続され、
さらにヒートポンプからの熱を奪う熱交換器とを
備え、前記循環ポンプの運転により貯湯タンク内
の水を熱交換器を介して循環させることにより、
熱交換器の部分で熱交換して湯とし、その湯を貯
湯タンクの上部より順次貯えるようにした電気温
水器に関するもので、ヒートポンプによる貯湯タ
ンク内の湯の沸き上げ停止を、ヒートポンプが過
負荷状態になる前に行なわせることにより、過負
荷によるヒートポンプの故障や機器の劣化を防止
することを目的とする。[Detailed description of the invention] The present invention consists of a hot water storage tank that has an outflow port at the bottom and an inflow port at the top, one end of which is connected via a circulation pump to the outflow port of the hot water storage tank, and the other end of which is connected to the outflow port of the hot water storage tank through a circulation pump. is connected by piping to the inlet of the hot water storage tank,
Furthermore, it is equipped with a heat exchanger that removes heat from the heat pump, and by operating the circulation pump, the water in the hot water storage tank is circulated through the heat exchanger.
This relates to an electric water heater that exchanges heat to create hot water in the heat exchanger section and stores the hot water sequentially from the top of the hot water storage tank. The purpose of this is to prevent heat pump failure and equipment deterioration due to overload by having the system perform this operation before the condition occurs.
以下、本考案をその一実施例を示す図面にもと
づいて説明する。第１図および第２図において、
１は貯湯タンクで、この貯湯タンク１は上面部に
流入口２を設け、かつ胴部の下部に流出口３を設
けている。４はヒートポンプ５の熱交換器６と接
触するように設けられた熱交換器で、この熱交換
器４の一端は循環ポンプ７を介して貯湯タンク１
の流出口３に配管接続され、かつ他端は湯温調整
弁８を介して前記貯湯タンク１の流入口２に配管
接続されている。９は貯湯タンク１の流入口２と
湯温調整弁８とを連絡する配管の途中から引き出
された給湯管で、この給湯管９の先端には給湯蛇
口（図示せず）を設けている。１０は貯湯タンク
１の下方胴部に配管接続された給水管、１１は前
記循環ポンプ６の吸込側と貯湯タンク１の流出口
３とを結ぶ配管１２の表面に内方に突出するよう
に設けた円筒状の凹部で、この凹部１１には常閉
型のサーモスタツトよりなる感温体１３を密着さ
せ、かつバンド（図示せず）により取付けてい
る。また前記配管１２は熱伝導のよい銅管により
構成されている。 Hereinafter, the present invention will be explained based on the drawings showing one embodiment thereof. In Figures 1 and 2,
Reference numeral 1 denotes a hot water storage tank, and the hot water storage tank 1 has an inlet 2 at its upper surface and an outlet 3 at the lower part of its body. 4 is a heat exchanger provided so as to be in contact with the heat exchanger 6 of the heat pump 5, and one end of this heat exchanger 4 is connected to the hot water storage tank 1 via the circulation pump 7.
The other end is connected to the inlet 2 of the hot water storage tank 1 via a hot water temperature regulating valve 8 . Reference numeral 9 denotes a hot water supply pipe drawn out from the middle of a pipe connecting the inlet 2 of the hot water storage tank 1 and the hot water temperature regulating valve 8, and a hot water supply faucet (not shown) is provided at the tip of this hot water supply pipe 9. 10 is a water supply pipe connected to the lower body of the hot water storage tank 1; 11 is provided on the surface of a pipe 12 connecting the suction side of the circulation pump 6 and the outlet 3 of the hot water storage tank 1 so as to protrude inward; The recess 11 has a cylindrical shape, and a temperature sensing element 13 made of a normally closed thermostat is brought into close contact with the recess 11 and is attached by a band (not shown). Further, the piping 12 is made of a copper pipe with good thermal conductivity.
前記ヒートポンプ５は、熱交換器４と接触する
熱交換器６の他に、コンプレツサー１４、蒸発器
１５、フアン１６、減圧弁１７を具備しており、
電気的に接続されたコンプレツサー１４とフアン
１６の運転により冷媒回路は第１図の矢印方向に
循環するようにしている。そして前記循環ポンプ
７は第３図に示すように、ヒートポンプ５のコン
プレツサー１４とフアン１６とともに、交流電源
１８に並列に接続され、かつ常閉型のサーモスタ
ツトよりなる感温体１３はリレー励磁コイル１９
に直列に接続されるとともに交流電源１８に並列
に接続されている。またリレー励磁コイル１９の
接点２０は交流電源１８に直列に接続されてい
る。 The heat pump 5 includes a heat exchanger 6 in contact with the heat exchanger 4, a compressor 14, an evaporator 15, a fan 16, and a pressure reducing valve 17.
The refrigerant circuit is made to circulate in the direction of the arrow in FIG. 1 by operating the electrically connected compressor 14 and fan 16. As shown in FIG. 3, the circulation pump 7, together with the compressor 14 and fan 16 of the heat pump 5, are connected in parallel to an AC power source 18, and the temperature sensing element 13, which is a normally closed thermostat, is connected to a relay excitation coil. 19
The AC power source 18 is connected in series with the AC power source 18 and in parallel with the AC power source 18 . Further, the contact 20 of the relay excitation coil 19 is connected in series to the AC power supply 18 .
上記第３図の回路構成において、交流電源１８
を通電状態にすると、循環ポンプ７とヒートポン
プ５に通電される。この場合、貯湯タンク１内の
水は第１図に示すように、循環ポンプ７の運転に
より、熱交換器４、湯温調整弁８を介して貯湯タ
ンク１の流入口２より貯湯タンク１内に戻るとい
う循環動作を行なう。そして前記ヒートポンプ５
は、フアン１６によつて蒸発器１５より外気を導
入した冷媒をコンプレツサー１４によつて凝縮
し、かつ熱交換器６に約85℃の熱にして送り、そ
してこの熱は循環回路における熱交換器４により
奪われる。その後、熱を奪われた冷媒は減圧弁１
７を介して蒸発器１５に戻るというサイクルを繰
り返すもので、定常運転サイクル時においては、
高圧力側は21〜25Kg／cm2の圧力を保つている。そ
してこの圧力の変動は熱交換器６の温度の変化に
よつて起こるもので、熱交換器６の温度が高い場
合は、高圧力になる。したがつて循環回路におけ
る熱交換器４による熱交換の度合によつて異常圧
を生じることになる。一般に冷媒を利用したコン
プレツサー１４は30Kg／cm2までの圧力にしないと
危険であることになつている。 In the circuit configuration shown in FIG. 3 above, the AC power supply 18
When energized, the circulation pump 7 and the heat pump 5 are energized. In this case, as shown in FIG. 1, the water in the hot water storage tank 1 is pumped into the hot water storage tank 1 from the inlet 2 of the hot water storage tank 1 via the heat exchanger 4 and the hot water temperature adjustment valve 8 by the operation of the circulation pump 7. Performs a circular motion of returning to . and the heat pump 5
The compressor 14 condenses the refrigerant introduced from the evaporator 15 by the fan 16 and sends it to the heat exchanger 6 as a heat of about 85°C, and this heat is transferred to the heat exchanger in the circulation circuit. Deprived by 4. After that, the refrigerant that has been deprived of heat is transferred to the pressure reducing valve 1.
The cycle of returning to the evaporator 15 via 7 is repeated, and during the steady operation cycle,
The high pressure side maintains a pressure of 21-25Kg/ cm2 . This pressure fluctuation occurs due to a change in the temperature of the heat exchanger 6, and when the temperature of the heat exchanger 6 is high, the pressure becomes high. Therefore, abnormal pressure is generated depending on the degree of heat exchange by the heat exchanger 4 in the circulation circuit. Generally, the compressor 14 using refrigerant is dangerous unless the pressure reaches 30 kg/cm 2 .
一方、循環回路における貯湯タンク１内の水は
循環ポンプ７の運転により、第１図に示す矢印方
向に循環しており、水が熱交換器４に達すると、
この熱交換器４はヒートポンプ５の熱交換器６よ
り熱を奪つているため、この熱により前記水を加
熱して湯とし、そしてこの湯は貯湯タンク１の流
入口２より貯湯タンク１内に入つて貯湯タンク１
の上部より順受貯湯される。このとき、水の加熱
温度は循環回路を流れる流量によつて変化するた
め、一定の加熱温度が得られるように、湯温調整
弁８により流れてくる湯の温度を感知してその流
量を一定にコントロールしている。なお、湯温調
整弁８の感温体としてはワツクスペレツトを採用
している。このようにして貯湯タンク１の流入口
２へ流入する湯温を55℃に設定し、貯湯タンク１
の上部より55℃の湯を順次貯湯する。この湯温を
55℃に設定することにより、熱交換のバランスを
保つてヒートポンプ５における冷媒回路の内圧を
21〜25Kg／cm2に保つている。 On the other hand, the water in the hot water storage tank 1 in the circulation circuit is being circulated in the direction of the arrow shown in FIG. 1 by the operation of the circulation pump 7, and when the water reaches the heat exchanger 4,
Since this heat exchanger 4 takes heat from the heat exchanger 6 of the heat pump 5, the water is heated with this heat to become hot water, and this hot water flows into the hot water storage tank 1 from the inlet 2 of the hot water storage tank 1. Enter hot water tank 1
Hot water is stored sequentially from the top of the tank. At this time, the heating temperature of the water changes depending on the flow rate flowing through the circulation circuit, so in order to obtain a constant heating temperature, the temperature of the flowing hot water is sensed by the hot water temperature adjustment valve 8 and the flow rate is kept constant. is controlled. Note that a wax pellet is used as the temperature sensing element of the hot water temperature regulating valve 8. In this way, the temperature of the hot water flowing into the inlet 2 of the hot water storage tank 1 is set to 55°C, and
Hot water at 55℃ is stored sequentially from the top of the tank. This water temperature
By setting the temperature to 55℃, the internal pressure of the refrigerant circuit in the heat pump 5 can be maintained while maintaining the balance of heat exchange.
It is maintained at 21-25Kg/ cm2 .
そして貯湯タンク１の下方まで55℃の温が貯湯
されると、従来は第４図に示すように、貯湯タン
ク１の側壁に取付けたサーモスタツト２１でその
湯温を感知し、電気回路を開路するようにしてい
た。しかしながら、従来のサーモスタツト２１の
取付けは、貯湯タンク１の側壁に取付金具２２を
溶接した後、サーモスタツト２１を取付金具２２
にビス２３により取付けるようにしているもの
で、前記取付金具２２の溶接の不具合や、貯湯タ
ンク１の板厚が２mmときわめて厚いため、実際貯
湯タンク１内の湯の沸き上げが完了しているにも
かかわらず、サーモスタツト２１による温度感知
が遅れることになり、その結果、これにおいて
は、循環回路内に湯がまわつてからヒートポンプ
５をオフさせることになるため、熱交換がバラン
スを失い、そしてヒートポンプにおける冷媒回路
の内圧が28〜30Kg／cm2に達して危険な状態となる
ものであつた。またこのことは、循環ポンプ７の
ケーシングにも熱的影響を与えることになるた
め、循環ポンプ７自体の劣化にもつながるもので
あつた。またサーモスタツト２１の設定温度を55
℃より下げた場合は、貯湯タンク１内の湯の量が
減少することになるため、いずれの場合にして
も、好ましくない結果となつていた。 When a temperature of 55°C reaches the bottom of the hot water storage tank 1, conventionally, as shown in Figure 4, the thermostat 21 attached to the side wall of the hot water storage tank 1 senses the temperature and opens the electric circuit. I was trying to do that. However, in the conventional installation of the thermostat 21, after welding the mounting bracket 22 to the side wall of the hot water storage tank 1, the thermostat 21 is attached to the mounting bracket 22.
The hot water storage tank 1 is attached to the hot water storage tank 1 with screws 23, and due to problems with the welding of the mounting bracket 22 and the extremely thick plate thickness of the hot water storage tank 1, which is 2 mm, the hot water in the hot water storage tank 1 is actually not fully boiled. Nevertheless, the temperature sensing by the thermostat 21 is delayed, and as a result, in this case, the heat pump 5 is turned off after the hot water has circulated in the circulation circuit, so the heat exchange becomes unbalanced. The internal pressure of the refrigerant circuit in the heat pump reached 28 to 30 kg/cm 2 , creating a dangerous situation. Moreover, this also has a thermal effect on the casing of the circulation pump 7, leading to deterioration of the circulation pump 7 itself. Also, set the temperature of thermostat 21 to 55.
If the temperature is lower than 0.degree. C., the amount of hot water in the hot water storage tank 1 will decrease, resulting in unfavorable results in either case.
しかるに本考案の一実施例においては、熱交換
のよい銅管により構成された配管１２の表面に内
方に突出するように円筒状の凹部１１を設け、こ
の凹部１１に密着するように、熱容量の小さい常
閉型のサーモスタツトよりなる感温体１３を取付
けているため、この感温体１３は配管１２内を通
る湯の温度をすばやくとらえ、かつリレー励磁コ
イル１９に信号を送り、電気回路を開路すること
ができる。この場合、感温体１３を構成する常閉
型のサーモスタツトはその設定温度を35℃に設定
しており、そして貯湯タンク１の上部より順次貯
湯される湯と水の混合層は55℃の湯温より低くな
つているため、貯湯タンク１の底面板１′の最上
端部が55℃に達すると、配管１２に設けた感温体
１３は35℃の温度を感知して電気回路を開路し、
循環ポンプ７およびヒートポンプ５への通電を停
止する。この場合、ヒートポンプ５における冷媒
回路の内圧は、35℃までの水温を吸入した場合、
熱交換的にバランスがとれている最大圧力値25
Kg／cm2となるため、常に安定したヒートポンプ５
の運転と安定した沸き上げ湯温を得ることができ
る。 However, in one embodiment of the present invention, a cylindrical recess 11 is provided on the surface of the pipe 12 made of a copper pipe with good heat exchange so as to protrude inward, and the heat capacity is Since the temperature sensing element 13 consisting of a small normally closed thermostat is installed, this temperature sensing element 13 quickly detects the temperature of the hot water passing through the pipe 12, and also sends a signal to the relay excitation coil 19, which activates the electric circuit. can be opened. In this case, the normally closed thermostat constituting the temperature sensor 13 has its set temperature set at 35°C, and the mixed layer of hot water and water stored sequentially from the top of the hot water storage tank 1 has a temperature of 55°C. Since the temperature is lower than the hot water temperature, when the top end of the bottom plate 1' of the hot water storage tank 1 reaches 55°C, the temperature sensor 13 installed in the pipe 12 senses a temperature of 35°C and opens the electric circuit. death,
The supply of electricity to the circulation pump 7 and the heat pump 5 is stopped. In this case, the internal pressure of the refrigerant circuit in the heat pump 5 is as follows:
Maximum pressure value 25 that is well balanced for heat exchange
Kg/cm 2 , so the heat pump is always stable 5
operation and stable boiling water temperature.
なお、上記一実施例においては、感温体１３と
して熱容量の小さいサーモスタツトを用い、これ
を配管１２の凹部１１に取付けるようにしていた
が、このサーモスタツトより小さい電子部品、例
えばサーミスタ等を上記一実施例と同様に取付
け、電子回路により制御するようにしても、上記
一実施例と同様の効果が得られるものである。 In the above embodiment, a thermostat with a small heat capacity was used as the temperature sensing element 13, and this was installed in the recess 11 of the pipe 12, but an electronic component smaller than this thermostat, such as a thermistor, etc. Even if it is mounted in the same manner as in the first embodiment and controlled by an electronic circuit, the same effects as in the above embodiment can be obtained.
以上のように本考案によれば、循環ポンプの吸
込側と貯湯タンクの流出口とを結ぶ配管に凹部を
設け、この凹部に貯湯タンク内の湯の沸き上げを
停止させる感温体を密着させて取付けているた
め、この感温体は配管内を通る湯の温度をすばや
くとらえることができ、その結果、ヒートポンプ
および循環ポンプへの通電もすみやかに停止させ
ることができるため、従来のように過負荷による
ヒートポンプの故障や機器の劣化ということはな
くなるものである。 As described above, according to the present invention, a recess is provided in the piping connecting the suction side of the circulation pump and the outlet of the hot water storage tank, and a temperature sensing element that stops the boiling of hot water in the hot water storage tank is tightly attached to this recess. Because this temperature sensing element is installed in There will be no more heat pump failures or equipment deterioration due to load.
第１図は本考案の一実施例を示す電気温水器の
配管構成図、第２図は同温水器の要部の分解斜視
図、第３図は同温水器の電気回路図、第４図は従
来の電気温水器におけるサーモスタツトの取付け
を示す斜視図である。
１……貯湯タンク、２……流入口、３……流出
口、４……熱交換器、５……ヒートポンプ、７…
…循環ポンプ、１１……凹部、１２……配管、１
３……感温体。
Fig. 1 is a piping configuration diagram of an electric water heater showing an embodiment of the present invention, Fig. 2 is an exploded perspective view of the main parts of the water heater, Fig. 3 is an electric circuit diagram of the water heater, and Fig. 4 1 is a perspective view showing the installation of a thermostat in a conventional electric water heater. 1... Hot water storage tank, 2... Inlet, 3... Outlet, 4... Heat exchanger, 5... Heat pump, 7...
...Circulation pump, 11...Recess, 12...Piping, 1
3...Thermosensitive body.
Claims (1)
た貯湯タンクと、一端が循環ポンプを介して貯湯
タンクの流出口に配管接続され、かつ他端が前記
貯湯タンクの流入口に配管接続され、さらにヒー
トポンプからの熱を奪う熱交換器とを備え、前記
循環ポンプの吸込側と貯湯タンクの流出口とを結
ぶ配管に凹部を設け、この凹部に貯湯タンク内の
湯の沸き上げを停止させる感温体を密着させて取
付けたことを特徴とする電気温水器。 A hot water storage tank having an outflow port at the bottom and an inflow port at the top, one end of which is connected via a circulation pump to the outflow port of the hot water storage tank, and the other end of which is connected to the inflow port of the hot water storage tank by piping. , further comprising a heat exchanger that removes heat from the heat pump, a recess is provided in the piping connecting the suction side of the circulation pump and the outlet of the hot water storage tank, and boiling of hot water in the hot water storage tank is stopped in the recess. An electric water heater characterized by having a temperature-sensitive body mounted in close contact with the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8385781U JPS634925Y2 (en) | 1981-06-08 | 1981-06-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8385781U JPS634925Y2 (en) | 1981-06-08 | 1981-06-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57195050U JPS57195050U (en) | 1982-12-10 |
| JPS634925Y2 true JPS634925Y2 (en) | 1988-02-09 |
Family
ID=29879252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8385781U Expired JPS634925Y2 (en) | 1981-06-08 | 1981-06-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS634925Y2 (en) |
-
1981
- 1981-06-08 JP JP8385781U patent/JPS634925Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57195050U (en) | 1982-12-10 |
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