TW203648B - Hot and cold water mixing apparatus - Google Patents

Hot and cold water mixing apparatus Download PDF

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Publication number
TW203648B
TW203648B TW080108266A TW80108266A TW203648B TW 203648 B TW203648 B TW 203648B TW 080108266 A TW080108266 A TW 080108266A TW 80108266 A TW80108266 A TW 80108266A TW 203648 B TW203648 B TW 203648B
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TW
Taiwan
Prior art keywords
hot water
cold
valve
cold water
mixing
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TW080108266A
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Chinese (zh)
Inventor
Yutaka Aoki
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Parliment Technology Kk
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00Domestic hot-water supply systems

Abstract

A hot and cold water mixing apparatus comprises a hot and cold mixing valve. The hot and cold water mixing valve is arranged between the hot water pipe and the cold water pipe and is capable of adjusting the opening areas of the hot water inlet and the cold water inlet by a control mechanism. The mixing apparatus is characterized in a pressure difference balance valve consisting of a valve body situated among the hot water port and the cold water port and the mixing water port, a piston disposed in a guide hole to sustain the pressures in the mixing water route and the cold water inlet, a piston disposed in a guide hole to sustain the pressures in the mixing water route and the hot water inlet, a partition wall arranged between the hot route and the cold route and extending into the valve body to divide the valve body into two portions sustaining two different pressures, and a connecting axle passing through the partition wall that separates the hot water route and the cold water route and enabling the open areas of the hot water route and the cold water route to vary in an inversely proportional relation.

Description

203648 A 6 Π 6 經濟部屮央標準劝A工消"合作杜印製 五、發明説明() 本發明偽藉調整熱水與冷水之混合(流*)比率,成 為一定值,而可得到所希望之混合熱水者;且僳有關於不 受冷熱水壓力變化之影響,而可控制一定流量比之冷熱水 混合裝置。 〔習知技術〕 冷熱水混合裝置之冷热水混合閥傜藉一支於其左、右 對向裝有冷水閥及熱水闕之軸所驅動,該等閥體偽使開口 / --------------------------------------------- 面積(調整口)成反比例變彳t煮。而且,如在日本専利公 開公報昭和6 1- 1 6 1 34 9號中所提者,係為了不受冷、熱水 壓變化之影«,而可得到所希望之混合流量比之裝置,以 下利用第3圖説明之。 冷熱水混合閥1'僳藉馬逹6使其進退移動,而得到 冷水閥11'舆熱水閥12Z所要之混合(流量)比者,為了 保持冷水壓與熱水壓於同一,而在該混合閥1/之上流側 ,裝有平衡閥2 '。該平衡閥2 z俱藉軸23 z將設於冷水 ........ 路(3、31)之冷水閥21>、與設於熱水路(4、41)之熱 水閥22 /連結者,於其中間部裝設i活塞24 該活塞24 1 1 _ I、 像插入做為Μ座之引導孔25'中。藉此活塞24 z将冷水路 3與熱水路4區隔、且保持於水密(Water-Seal)狀態。 該引導孔25 /偽從頭到尾具有相同之截面稹A的缸體 。因此,圈示之冷水側水壓P~c3被平衡而抵消,且作用 於冷水閥21 '之壓力僅為團示之P- C31。相同地.熟水傅 之水壓P' h4亦被抵消,且僅有_示之P' h41作用於熱水 閥22 -上。因此,平衡閥2 '左右移動,使冷水器31與熱 „ -I - . (請先閲讀背而之注意事項再蜞寫本頁) 本紙張尺度边用中a B家標準(CNS) Ή規格(210x297公;«:) 203648 Λ 6 Π 6 五、發明説明() 水路41之壓力變成相同,即將P/ c31與pz h41之壓力差調 整為0,而安定。平衡閥2 ·*因俱如此地動作,馬逹依據 溫度檢出器8之溫度檢知信號旋轉,而移動速结於其_出 轅13<之冷水閥11>及熱水閥12'之位置•且若冷水路31 及熱水路41之兩閥(11/、12>)的開口面稹變化,則該 平衡閥2 —即移動,使冷水路31舆熱水路41之壓力互相受 為相等,平衡閥移動之結果,冷水路3及熱水路4之 流量亦相對應而變化。極端的説,流至冷水路3—一冷水 路31-—混合通路5之流量,及流至熱水路4-一熱水路 41- —混合通路5之流量變化,而混合通路5之冷熱水混 合比率亦變化,即可得到對應於溫度檢出器8之信魏的所 希望之流出熱水《度。 〔本發明欲解決之課題〕 、/ , 上述冷熱水混合装置具有很難控制流出熱水溫度之缺 \ /// 點。其原因俱活塞24/之滑動阻力大,做平衡H 2 '之開 / 度調節蓮動很難圔滑地動作。J5且,缸體部之引導孔25 / 與該活塞24/之間很難完全密封,故會産生摻漏,該滲漏 r...―― — ------—............................. ............ν ............. 鼉足夠使流出熱水溫度不正常。此缺點會因冷水路3之壓 力昇高,且随室内自來水之使用狀態變動而産生;且降低 活塞之滑動阻力,則很難提高密封力,而成為無法根本改 善之技術上的困難點。以通常之技術欲解決此問題的話, 若降低活塞之滑動胆力值,則密封力亦會變小,受阻力與 密封呈相反關傜之影逛,終就會失敗。 若要指出此缺點中之其它問題的話,則是:熱水路4 (請先閲讀背而之注意事項再填寫木頁) 裝- 訂· 本紙尺度边用中a®家橾iMCNS)»H規格(210X297公;«:) 4 Λ 6 Π 6 203648 五、發明説明() (請先閲誚背而之注意事項再填寫本頁) 之壓力一般而言較冷水路之壓力相對地低,因此,從活塞 渗漏之冷水會因相對地离壓,而流入熱水》4、41中。在 密封力不足之情況下,此種流入熱水路之冷水量會變成相 當多,卽使抑制成少董,此滲漏冷水亦會在供給至混合通 輅5之前,變動熱水之溫度。此種滲獮現象,即使是相同 的活塞也會受其壓力、表面性狀等之狀態因素變化,而無 法控制其滲漏董;而且,縱使欲將量産之多數活塞的滲漏 量給予相同的規格化,亦無技術上之意義,受限於滲漏而 難改善流出熱水溫度之控制。 此等問題,除再檢討作用於閥及活塞之冷熱水混合裝 置内之壓力控制外,亦應由更廣之W點迫求解決之道。 〔欲解決問題之手段〕 經濟部屮央標準而A工消痄合作社印31 本發明為金面改菩上述之缺黏,開發一種冷熱水混合 装置,具備冷熱水混合閥1,該冷熱水混合Ml設置於冷 水路3及熱水路4 ,藉適當之驅動装置A可蹰整冷水W11 、熱水閥12之各開口面稹;S藉閥黼21、鬮體22;活塞23 、活塞24;連結麯25構成差壓平衡閥2,將該差壓平衡閥 裝設成,使冷熱水混合调1之二次側的冷水路3立、熱水路 41之流路截面積,分別成反比例鸞為其待揪者。 在如此構成之冷熱水混合裝置中,對差壓平衡閥2之 冷水閥賭21及熱水閥體22之有效動作壓力,如下所述: 活塞2 3承受自冷水路3之壓力Pc 3XA (截面稹),相 對於此,冷水閥醱21承受自冷水路31之K力Pc31XA你反 對方向動作.故該等壓力差Pc對該冷水閥體21産生作用。 本紙尺度逡用中SB家楳净(CNS>1M規格(2丨0x297公址) 203648 A 6 ____Π6_ 五、發明説明() 相同地,活塞24承受自熱水路4之壓力Ph4XA,相對 於此,热水閥體22承受自熱水輅41之壓力Ph41XA换反對 方向動作,故該等®力差對該熱水閥22産生作用。 因此,差壓平衡閥2會移動至有效作用力Pc與fh之差 為0,且停止於此平衡點。圔中所示之一對Pc5及一對Ph5 互柑抵消,且不影響上逑閥之動作。 即,若向左之力為正,則於上述平衡點,以下之關係 式成立。203648 A 6 Π 6 The Ministry of Economic Affairs ’Standards Persuaded A Gongxiao & Co .; Co. Du Printed 5. Description of the Invention () The invention pretends to adjust the mixing (flow *) ratio of hot and cold water to become a certain value and obtain Those who want to mix hot water; and they are not affected by the change of cold and hot water pressure, but can control a certain flow ratio of cold and hot water mixing device. [Conventional Technology] The cold and hot water mixing valve of the cold and hot water mixing device is driven by a shaft with a cold water valve and a hot water valve on its left and right. These valve bodies are fake openings --- ------------------------------------------ The area (adjustment port) changes in inverse proportion潳 t cook. Moreover, as mentioned in Japanese Open Publication No. Showa 6 1- 1 6 1 34 9, it is a device that can obtain the desired mixed flow ratio in order not to be affected by the change of cold and hot water pressure. This is explained using Figure 3. The hot and cold water mixing valve 1 'is moved forward and backward by the horse 6 to obtain the desired mixing (flow rate) ratio of the cold water valve 11' and the hot water valve 12Z. In order to keep the cold water pressure and hot water pressure at the same The mixing valve 1 / upstream side is equipped with a balancing valve 2 '. The balancing valve 2 z will be installed in the cold water via the shaft 23 z ........ The cold water valve 21 in the path (3, 31), and the hot water valve 22 in the hot water path (4, 41) / Connector, the i-piston 24 is installed in the middle, and the piston 24 1 1 _I is inserted into the guide hole 25 ′ as the M seat. With this, the piston 24 z separates the cold water path 3 from the hot water path 4 and keeps it in a water-sealed state. The guide hole 25 / pseudo-cylinder with the same cross-section A from beginning to end. Therefore, the circled cold water pressure P ~ c3 is balanced and canceled out, and the pressure acting on the cold water valve 21 'is only P-C31. Similarly, the water pressure P 'h4 of the cooked water is also cancelled, and only the P' h41 indicated by _ acts on the hot water valve 22-. Therefore, the balance valve 2 'moves to the left and right to make the water cooler 31 and hot „-I-. (Please read the precautions before writing this page) This paper is used in the standard a B standard (CNS) Ή specifications (210x297 g; «:) 203648 Λ 6 Π 6 V. Description of the invention () The pressure of the waterway 41 becomes the same, that is, the pressure difference between P / c31 and pz h41 is adjusted to 0, and it is stable. Balance valve 2 Ground movement, the horse rotates according to the temperature detection signal of the temperature detector 8, and the speed of movement is at the position of its cold water valve 11 > and hot water valve 12 ' If the opening surfaces of the two valves (11 /, 12>) of the water channel 41 change, the balancing valve 2 moves, so that the pressures of the cold water channel 31 and the hot water channel 41 are equal to each other. As a result of the movement of the balancing valve, The flow rate of the cold water path 3 and the hot water path 4 also changes correspondingly. Extremely speaking, the flow rate to the cold water path 3-a cold water path 31-mixed channel 5 and the hot water path 4-a hot water path 41--the flow rate of the mixing channel 5 changes, and the mixing ratio of the cold and hot water in the mixing channel 5 also changes, and the corresponding temperature detector 8 can be obtained Xin Wei's desired outflow hot water "degree. [Problem to be solved by the present invention], /, The above-mentioned cold and hot water mixing device has a defect that it is difficult to control the temperature of outflow hot water \ /// point. The reason is piston 24 / The sliding resistance is large, and it is difficult to make a smooth movement by balancing the opening / degree adjustment of H 2 '. J5 Moreover, it is difficult to completely seal between the guide hole 25 of the cylinder part and the piston 24 /, so it will occur Mixed leakage, the leakage r ...——————————...................................... .......... ν ............. The mole is enough to make the temperature of the outflowing hot water abnormal. This shortcoming will be caused by the pressure of the cold water circuit 3 increasing It is caused by the change in the use state of tap water; and reducing the sliding resistance of the piston makes it difficult to increase the sealing force, which becomes a technical difficulty that cannot be fundamentally improved. If the ordinary technology is to solve this problem, if the sliding force of the piston is reduced Value, the sealing force will also be reduced, and the resistance and sealing will be opposite, and will eventually fail. To point out other problems in this shortcoming, it is: hot water circuit 4 (please read the back And the matters needing attention Write a wooden page) Binding-Stapled · This paper is used in the standard a® homepage iMCNS) »H specifications (210X297;« :) 4 Λ 6 Π 6 203648 V. Description of invention () (please read the back and pay attention first Please fill in the details on this page.) The pressure is generally lower than the pressure of the cold water channel. Therefore, the cold water leaking from the piston will flow into the hot water due to the relative pressure away. 4, 41. The lack of sealing force In this case, the amount of cold water flowing into the hot water channel will become quite large, so that it will be suppressed to a small amount. This leaking cold water will also change the temperature of the hot water before being supplied to the mixing bowl 5. This kind of seepage phenomenon, even the same piston will be affected by the state factors such as its pressure, surface properties, etc., and its leakage can not be controlled; moreover, even if the leakage of most pistons in mass production is to be given the same specifications It also has no technical significance, and it is difficult to improve the control of the outflow hot water temperature due to leakage. In addition to reviewing the pressure control in the cold and hot water mixing device acting on the valve and piston, these problems should also be resolved by a wider W point. [Means to solve the problem] The Ministry of Economic Affairs ’standard and the seal of A Gongxiao Cooperative Society 31 This invention develops a cold and hot water mixing device with a cold and hot water mixing valve 1, which is equipped with a cold and hot water mixing valve 1 Ml is installed in the cold water circuit 3 and the hot water circuit 4, and the appropriate driving device A can be used to adjust the opening surface of the cold water W11 and the hot water valve 12; S borrows the valve 21, the body 22; the piston 23, the piston 24; The connecting curve 25 constitutes a differential pressure balancing valve 2, and the differential pressure balancing valve is installed so that the cross-sectional area of the cold water passage 3 on the secondary side of the cold and hot water mixing 1 and the flow passage of the hot water passage 41 are inversely proportional to each other. For those who are waiting. In the thus configured cold and hot water mixing device, the effective operating pressures of the cold water valve 21 and the hot water valve body 22 of the differential pressure balance valve 2 are as follows: The piston 23 bears the pressure Pc 3XA from the cold water circuit 3 (cross section Zhen), on the other hand, the cold water valve 21 receives the K force Pc31XA from the cold water path 31. You oppose the movement in the opposite direction. Therefore, the pressure difference Pc acts on the cold water valve body 21. This paper standard is used in the SB Jiayujing (CNS> 1M specifications (2 丨 0x297 public address) 203648 A 6 ____ Π6_ V. Description of the invention () Similarly, the piston 24 withstands the pressure Ph4XA of the self-heating water circuit 4, compared to this, The hot water valve body 22 is subjected to the pressure Ph41XA from the hot water tank 41, which acts in the opposite direction, so these differences in force act on the hot water valve 22. Therefore, the differential pressure balancing valve 2 will move to the effective forces Pc and fh The difference is 0, and it stops at this equilibrium point. One of the points shown in the figure cancels each other between Pc5 and a pair of Ph5, and does not affect the operation of the upper sag valve. That is, if the force to the left is positive, the above Balance point, the following relationship is established.

Ph4-Ph41+Pc31-Pc3= 0 Ph4-Ph41= Pc31-Pc31 且若熱水閥體22之流通量為Qh、冷水閥體21之流通置為Qc ,則有以下之關係:Ph4-Ph41 + Pc31-Pc3 = 0 Ph4-Ph41 = Pc31-Pc31, and if the flow volume of the hot water valve body 22 is Qh and the flow volume of the cold water valve body 21 is Qc, there is the following relationship:

Qh= α X a /V/Ph4-Ph41 Qc = a x b /JPh3-Pc31 (此式中,a、b分別偽冷熱水混合閥1之冷水閥11及 熱水閥12之開口面積,α傜比例常數。) 故,可得Qh = α X a / V / Ph4-Ph41 Qc = axb / JPh3-Pc31 (In this formula, a and b are the opening areas of the cold water valve 11 and the hot water valve 12 of the pseudo-cold-hot water mixing valve 1, respectively, and α 傜 proportional constant .) Therefore, available

Qh/ Qc = a/ b 經濟部中央榣準局只工消仲合作社印奴 (請先閲讀背而之注意事項再塡寫本頁) 之關僳,因此,令該差®平衡閥2動作之冷水及熱水,其 流量比率可藉冷熱水混合閥1之冷水閥11及熱水閥12之開 口比a/ b決定;自由地選擇該比率.即可確實地得到所希 望之熱水溫度。 具有如此之關傜,且設於差壓平衡閥2之上流一次侧 的冷熱水混合閥1.可藉如圖所示之單純機構來構成,故 本紙51··尺度边用中國困家樣準規IM2丨0X297公处) 203648 Λ 6 η 6_ 五、發明説明() t · 可令在流出熱水ffl度之控刺中檐任重要角色之上述開口比 a/b正確地動作。 例如,以一支«13連结時,冷热水混合閥1之驅動機 構即成為僅將該軸13進退移動之最單純的機構。無必要説 明以手動驅動之方式,以馬逹驅動此進退移動時,亦可依 溫度鼸檢出器8之檢出溫度_與設定溫度之溫度差驅動馬 逹,不管是大距離或细微的進退移動軸13,均可正確地進 行,' 而可適當地控制上述開口比a/b。亦即,绺使冷水溫 度與熱水溫度有變動,流出熱水溫度亦無變動。 〔寅施例1〕 在第1圖之實施例中,將冷水閥11及熱水閥12安裝於 單一軸13之冷熱水混合閥1 ,分別將其各閥對應於本裝置 之上流倒的冷水路3及熱水路4而設置。 在其下流倒之冷水路31與混合通路5之間,設有做為 閥座之引導孔73;且在冷水路4 1與該混合通路5之間,設 有引導孔74 ;且設有一隔壁7 1 ,使上述引導孔分別具有相 同之截面積A。本裝置内之冷水路及熱水路藉該隔壁71區 隔。 在上述一方之引導孔73設有控制冷水路31與混合通路 • 5之間的開口度之冷水閥2 1 ;且,在》—方之引導孔7 4設 有控制熱水路41與該混合通路5之間的開口度之熱水閥22 ,而構成差壓平衡閥2。 因此,將該冷水閥21安装於在引導孔7 3内運勧之活塞 2 3上;且,將該熱水閥22安裝於引導孔74内之活塞24上. (請先閲誚背而之注意枣項洱项窵木頁) 本紙尺度边ffl中a Η家樣JMCNS)>H規岱(210x297公;《:) 經濟部屮央榀準局A工消费合作社印5i 203648 Λ 6__[i_6_ 五、發明説明() 將該等活塞藉貫通於隔壁71之連結轎25連结,該差壓平衡 閥2之冷水閥21及熱水閥22將隔壁71挾住,且在互為反應 期i做閥動作。 隔壁亦可利用於前述冷熱水混合閥1,在貫通此隔壁 71之上逑軸13之互為反對侧處,分別安裝於冷水閫11及熱 水閥12,而該兩闢挟住隔壁71,且可在互為反對麵做閥動 作。為了此閥動作,利用馬逹6驅動該單騙13,藉馬逹驅 動_之進退移動較適宜。然而,亦可將該等冷水W11、熱 水閥12安裝於各別之作動軸,同時,分別控制各作動 而分別調整閥開度。而且,將溫度檢出器8安装於混合通 路5,而檢出流出之混合熱水溫度時,取出檢出租度舆設 定溫度之溫度差,可對應該溫度差調整驅動手段A之動作 ,藉此亦可微調冷水閥11與熱水閥12之W開度14、15。 〔實施例1之作用〕 上述活塞23之外側篇近混合通路5,且内侧經連通路 75而靠近冷水路3。相同地,活塞24之外側靠近混合通路 5,而其内側經連通路76而靠近熱水路4。 藉此,加於冷水閥21内侧之壓力與加於活塞23外倒之 壓力Pc5,因反對方向而互相抵消。冷水路3、31側之有 效壓力係,冷水閥21外倒所受之壓力Pc31及活塞23内倒所 受之壓力Pc3。又,加於熱水閥22内侧之®力與加於活塞 24外側之壓力Ph5,亦因反對方向而互相抵消。因此,該 熱水路4、41期I之有效壓力偽,熱水閥22外側所受之壓力 Ph41及活塞24内槲所受之壓力Ph4。亦即,對差壓平衡闕 (請先W1讀背而之注意事項典填寫本頁) 裝. 訂- 本紙5良尺度逡用中a Η家標準(CNS)>P4規格(210X297公tf) 203648 Λ 6 Β 6Qh / Qc = a / b The Central Bureau of Economics of the Ministry of Economic Affairs is only related to the Indian Slaves of Cooperative Cooperatives (please read the precautions before writing this page), therefore, the difference ® balance valve 2 is activated The flow ratio of cold water and hot water can be determined by the opening ratio a / b of the cold water valve 11 and the hot water valve 12 of the hot and cold water mixing valve 1; choose this ratio freely. The desired hot water temperature can be obtained reliably. The cold and hot water mixing valve 1, which has such a close relationship and is provided on the upstream side of the differential pressure balance valve 2. Can be constructed by a simple mechanism as shown in the figure, so the size of the paper 51 ·· is similar to that of the Chinese trapped house. (IM2 丨 0X297 public office) 203648 Λ 6 η 6_ V. Description of the invention () t · The above-mentioned opening ratio a / b, which plays an important role in the eaves control of the outflow of hot water ffl degrees, can be operated correctly. For example, when connected by a «13, the driving mechanism of the cold and hot water mixing valve 1 becomes the simplest mechanism that moves the shaft 13 forward and backward only. There is no need to explain the manual drive method. When driving forward and backward movements with a horse, you can also drive the horse according to the temperature difference between the temperature detected by the temperature detector 8 and the set temperature, whether it is a large distance or a slight advance and retreat. The movement shaft 13 can be accurately performed, and the above-mentioned opening ratio a / b can be appropriately controlled. That is, the lock causes the cold water temperature and the hot water temperature to change, and the outflow hot water temperature also does not change. [Example 1] In the embodiment of FIG. 1, the cold water valve 11 and the hot water valve 12 are installed on the single shaft 13 cold and hot water mixing valve 1, and their respective valves correspond to the cold water flowing down the device. Route 3 and hot water route 4 are installed. Between the cold water path 31 flowing down and the mixing path 5, there is a guide hole 73 as a valve seat; and between the cold water path 41 and the mixing path 5, there is a guide hole 74; and there is a partition 7 1. Make the guide holes have the same cross-sectional area A. The cold water path and hot water path in this device are separated by the partition wall 71. The guide hole 73 on the above side is provided with a cold water valve 2 1 that controls the opening degree between the cold water path 31 and the mixing passage 5; and, on the guide hole 74 on the side-a control hot water path 41 is provided with the mixing The hot water valve 22 with an opening degree between the passages 5 constitutes the differential pressure balancing valve 2. Therefore, the cold water valve 21 is installed on the piston 23 in the guide hole 73, and the hot water valve 22 is installed on the piston 24 in the guide hole 74. (Please read it first. Note the jujube item and the item item page) a HH sample JMCNS in the paper size side ffl)> H regulations Dai (210x297 g; ":) Printed by the Industrial and Consumer Cooperatives of the Central Bureau of Economics and Trade, 5i 203648 Λ 6 __ [i_6_ V. Description of the invention () The pistons are connected through the connecting car 25 of the partition wall 71, the cold water valve 21 and the hot water valve 22 of the differential pressure balancing valve 2 hold the partition wall 71, and during the mutual reaction period i Do the valve action. The partition wall can also be used for the aforementioned cold and hot water mixing valve 1. At the opposite sides of the shaft 13 passing through the partition wall 71, they are respectively installed at the cold water valve 11 and the hot water valve 12, and the two walls hold the partition wall 71, And the valve action can be done on the opposite sides. For this valve action, it is more appropriate to use the horse 6 to drive the single cheat 13, and use the horse to drive the forward and backward movement. However, the cold water W11 and the hot water valve 12 may be installed on separate actuating shafts, and at the same time, the actuation may be controlled separately to adjust the valve opening. Moreover, when the temperature detector 8 is installed in the mixing passage 5 and the temperature of the outflowing mixed hot water is detected, the temperature difference between the detection temperature and the set temperature is taken out, and the action of the driving means A can be adjusted corresponding to the temperature difference, thereby The W openings 14 and 15 of the cold water valve 11 and the hot water valve 12 can also be fine-tuned. [Function of Example 1] The piston 23 is near the mixing passage 5 on the outer side, and is closer to the cold water passage 3 through the communication passage 75 on the inner side. Similarly, the outer side of the piston 24 is close to the mixing passage 5, and the inner side thereof is close to the hot water passage 4 via the communication passage 76. With this, the pressure applied to the inside of the cold water valve 21 and the pressure Pc5 applied to the outside of the piston 23 cancel each other out due to the opposite direction. The effective pressure on the sides of the cold water channels 3 and 31 is the pressure Pc31 applied to the outside of the cold water valve 21 and the pressure Pc3 applied to the inside of the piston 23. Furthermore, the force applied to the inside of the hot water valve 22 and the pressure Ph5 applied to the outside of the piston 24 also cancel each other out due to the opposing direction. Therefore, the effective pressure of the hot water passages 4 and 41 is false, the pressure Ph41 received outside the hot water valve 22 and the pressure Ph4 received by the mist in the piston 24. That is, for the differential pressure balance threshold (please read the back to the W1 precautions and fill in this page). Binding-This paper is 5 good standards for use in a NH home standard (CNS) > P4 specification (210X297 public tf) 203648 Λ 6 Β 6

經濟部屮央橾準而A工消«合作杜印M 五、發明説明() 2_之有效動力换園之Pc31、Pc3;Ph41、PM。 若使用與前述關傜式相同條件、常數、變數,則在差 壓平衡閥2之平衡點處,下式成立。 Pc31+Ph4-(Ph41+Pc3)= 0 Pc3-Ph31= Ph4-Ph41 因此,冷水閥21與熱水閬22之各一次侧與二次侧之差 壓係相等。而且,若冷水路31(3)與熱水路41(4)之各通冷 水量、通熱水置為Qc、Qh,則 Qh/ a = Qc/ b Q h/ Qc = a/ b 因此,在差壓平衡閥2之平衡點*,與前述相同,通 熱水量與通冷水量之比,僳由冷熱水混合閥1之熱水閥12 與冷水閥11之開口比決定。此结畢,ϋ然水遍食Μ 1之 設定開口比,可確保相等之流量比。 而且,活塞23、24之前後壓力差變小的話,則從活塞 . — ...............一一 一 —------------------------------------------------------—-., 2 3、2 4之冷熱H麗量亦t變小g又.支持活塞蓮勘之隔 壁71挣藉由僅供键結軸2S或單軸13貫通之構造,故_周圍 ---- / I I ... I I *n»^ ^ _一 — - ... „ 之滑動面積可較活塞之滑動面積大幅地減小。即,在引導 f |M 一.. —........ ,....................... . .,·Μ«、......... .................... Λ ,. 孔72因連結轅25偽小直徑,故與隔壁71之間隙緦面積減小 ,因此,連結軸25周圍之滲漏防止,可以不提高其阻力 而輕易逹成。轉此,可防止冷水流向熱水及熱水流向冷水 ,且可金部消除使熱水溫度控制失常之習知技術的原因。 另外,各活塞無論在冷水路3、31倒、或熱水路4、41锢I均 是分別蓮動,因此,從活塞周圍之滲漏,完全不會成為問 (請先閲讀背而之注意事項再填窍本頁) 裝< 訂· 線- 本紙張尺度遑用中Η B家標準(CNS)T4規格(210乂297公址) 203648 Λ 6 Β6 經濟部屮央楛準而Μ工消费合作杜印3i 五、發明説明() 題。因不會引起熱水舆冷水之混合。 〔實施例2及作用〕 如第2圏所示,有鬭上述差壓平衡Μ2 .將冷水閥21 做成二籲閥體21a、21b;且將熱水W22做成二値闢髓22a 、22 b,以二段式閥構成時,做為變更例亦可。 在具有二段式閥構迪之差壓平衡閥2,分別做為二個 冷水閥醱21a、21b之两座而對應配置之引導孔73a及引導 孔73b,具有相同之截面積A ;相同地,做為二值熱水閥 22a、22b之閥座的引導孔74a、74b亦具有相同之截面稱A 。又,冷水W® 21a與活塞23之間,經連通路77而靠近冷 水路31,且熱水閥體22a與活塞24之間,經達通路78而鏵 近熱水路41。 藉此,左右向之混合通輅5之水壓Pc5,對加有冷水 路31之水壓Pc31的冷水閥體2U作用;另外,左右向之混 合通路5之水壓Ph5,亦對加有熱水路41之壓力Ph41的熱 水閥體22a作用。又,作用於冷水閥體21a内側及冷水閥體 21b外侧之壓力Pc5互相抵消,且,作用於冷水閥賭21b内 側及活塞23外側之壓力Pc31亦抵消。相同地,作用於熱水 閥體22a内側及熱水閥體22b外側之壓力Ph5互相抵消,且 ,作用於熱水閥體22b内側及活塞24外側之壓力Ph41亦抵 消。而且,冷水路3之®力Pc3作用於活塞23之内侧,且 ,熱水路4之壓力Ph4作用於活塞24之内侧。此結果,在 冷熱水混合装置2内之壓力平衡點處,下式成立。 Ph4-Ph41+Pc31-Pc3= 0 (請先閲請背而之注.意事項再堝窍本頁) 裝- 訂 線- 本JMfc尺度边用中困Η家標準(CNS)'f 4規格(210X297公设) 10 經濟部十央櫺準劝A工消仲合作杜印製 203648 A 6 . _ 五、發明説明() Ph4-Ph41= Pc3-Pc31 因此,此種情形亦可得到典上述相同之效果。該差β 平衡閥2之冷水閥體21a與熱水閥體22a依左右之移動, 将各別之開口面稹依反比例做大小變化,可随意取得開口 比〇 於此,作用於活塞23之壓力偽冷水路3輿冷水路31間 之差壓;且,熱水路4與熱水路41間之差壓作用於活塞24 ,此點亦可注意。即.作用於各活塞之壓力,在此情形下 ,當然較上例小。因此,發生於:活塞23與引導孔73c、 活塞24與引導孔74c間之滲漏,亦較上例小,滲漏對混合 通路5之熱水溫度的影壜,將更小減小。因此,對應於冷 熱水混合閥之開口比的通熱水量與通冷水量之比率,可》 差壓平衡閥自動地補正壓力;因冷熱水混合裝置具有所希 望之間口比,故可正確地執行流出熱水之溫度控制。另外 ,本例之冷熱水混合閥1像使用鬮盤閥。 〔發明之效果〕 藉在其左右具備有冷水閥及熱水閥,且於篛近冷水路 與混合通路處裝有冷水閥、於瘅近熱水路與混合通輅處裝 有熱水閥之差壓平衡閥.可保持冷水路及熱水路之冷水闕 與熱水閥之各一次側與二次側之上下流的壓力差於一定值 .且,可保持通冷水量與通熱水蛋之流量比,輿冷熱水混 合閥之開口比相等之值,故藉安裝於上流倒之冷熱水混合 閥得到之流量比,可保持於混合閥之開口比,而不會産生 流量比之變動。可提供一種有效之混合裝置,該混合裝置 (請先閲讀背而之注意事項再填窍木頁) 裝. 訂_ 線· 本紙5k尺度边用中BS家榀準(CNS)>H規怙(210x297公;Jt) 11 203648 Λ 6 η 6 五、發明説明() ,縱使從設於閥内供之活塞有冷熱水之滲漏現象,該活塞 兩铟之水歷差亦没有那麽大,且縱使從中間較細之連结軸 有冷熱水之雄漏現象,因滲漏面稹較小,故流量亦可較小 ,而不會有因冷热水之滲漏現象而産生溫度變化之庚。 再者,亦具有以下效果:在冷熱水混合鬮之冷水閥及 熱水Μ分別於前後具備有W髏之二段式閥構成中,將冷水 路3與混合通路5;及熱水路4與混合通路5匾隔之活塞 23、24之前後流的壓力差變小,而使冷熱水之滲漏量變小 ,故由於該活塞23、24之冷熱水滲漏的産生之溫度誤差, 亦會變為非常小。 圈式之簡單説明: 第1圔偽表示本發明一實施例之概略斷面團; 第2圖像表示不同實施例之概略斷面圖; 第3圖偽表示習知例之冷熱水混合裝置之概略斷面圔 (請先閱讀背而之注意事項再堝寫本頁) 裝< 訂 線- 經濟部中央標準而β工消作合作杜印5i 本紙51·•尺度边用中8困家標準(CNS)TM規怙(210X297公;!ί) 12The Ministry of Economic Affairs and the Central Committee of the Ministry of Economic Affairs and Industry «Cooperative Du Yin M. V. Description of Invention (2) Effective power for the park: Pc31, Pc3; Ph41, PM. If the same conditions, constants, and variables are used as in the above-mentioned shut-off equation, the following equation holds at the balance point of the differential pressure balance valve 2. Pc31 + Ph4- (Ph41 + Pc3) = 0 Pc3-Ph31 = Ph4-Ph41 Therefore, the differential pressure of the primary and secondary sides of the cold water valve 21 and the hot water valve 22 is equal. Moreover, if the cold water volume and the hot water volume of the cold water path 31 (3) and the hot water path 41 (4) are set to Qc and Qh, then Qh / a = Qc / b Q h / Qc = a / b At the balance point * of the differential pressure balancing valve 2, the ratio of the hot water flow to the cold water flow is determined by the opening ratio of the hot water valve 12 and the cold water valve 11 of the cold and hot water mixing valve 1 as described above. At the end of this, the set opening ratio of natural water consuming M 1 can ensure an equal flow ratio. Moreover, if the pressure difference between the pistons 23 and 24 becomes smaller, then the piston. --------------------------------------------., 2 3, 2 The hot and cold temperatures of 4 and the amount of light also become smaller and g. The partition wall 71 that supports the piston lotus is made of a structure that only passes through the bonding shaft 2S or the single shaft 13, so _ Surrounding ---- / II ... II * n »^ ^ _ 一 —-... The sliding area of„ can be greatly reduced compared to the sliding area of the piston. That is, in the guide f | M one .. —........, ... ......................., M «, .................................... ...... Λ,. The hole 72 has a pseudo-small diameter of the connecting shaft 25, so the area of the gap with the partition wall 71 is reduced. Therefore, the leakage around the connecting shaft 25 can be prevented without easily increasing its resistance. . In turn, it can prevent cold water from flowing into hot water and hot water from flowing into cold water, and can eliminate the cause of the conventional technology that makes the temperature control of hot water abnormal. In addition, each piston is poured in the cold water path 3, 31, or hot water Roads 4, 41 and I are all moving separately, so the leakage from around the piston will not be a problem at all (please read the back first and pay attention Item Refill Tips Page) Installation &Order; Thread-This paper standard is used in the NH B home standard (CNS) T4 specification (210 297 public address) 203648 Λ 6 Β6 Ministry of Economic Affairs Cooperation Duyin 3i V. Description of the invention () Problem. Because it will not cause mixing of hot water and cold water. [Example 2 and function] As shown in the second ring, there is a differential pressure balance Μ2 above. Use the cold water valve 21 as Cheng Eryu valve body 21a, 21b; and the hot water W22 is made into two valve 22a, 22b, when the two-stage valve structure, it can be used as a modified example. In the difference between the two-stage valve structure The pressure balance valve 2 is used as the two cold water valves 21a and 21b respectively, and the corresponding guide hole 73a and guide hole 73b are arranged with the same cross-sectional area A; similarly, as the two-value hot water valve 22a, The guide holes 74a and 74b of the valve seat of 22b also have the same cross-section A. Also, between the cold water W 21a and the piston 23, it is close to the cold water path 31 through the communication path 77, and the hot water valve body 22a and the piston 24 Between them, via the access passage 78, Hua closes to the hot water path 41. By this, the water pressure Pc5 of the left and right mixing ports 5 acts on the cold water valve body 2U to which the water pressure Pc31 of the cold water path 31 is added; In addition, the water pressure Ph5 of the left and right mixing passage 5 also acts on the hot water valve body 22a to which the pressure Ph41 of the hot water passage 41 is added. Also, the pressure Pc5 acting on the inside of the cold water valve body 21a and the outside of the cold water valve body 21b They cancel each other, and the pressure Pc31 acting on the inside of the cold water valve 21b and the outside of the piston 23 also cancels. Similarly, the pressure Ph5 acting on the inside of the hot water valve body 22a and the outside of the hot water valve body 22b cancel each other, and the pressure Ph41 acting on the inside of the hot water valve body 22b and the outside of the piston 24 also cancels. Moreover, the force Pc3 of the cold water passage 3 acts on the inside of the piston 23, and the pressure Ph4 of the hot water passage 4 acts on the inside of the piston 24. As a result, at the pressure balance point in the cold and hot water mixing device 2, the following formula holds. Ph4-Ph41 + Pc31-Pc3 = 0 (please read the back-notes first. Note this page before installing this page) Packing-Threading-This JMfc standard side-by-side standard (CNS) 'f 4 specifications ( 210X297 (public post) 10 Ministry of Economics Shizuo persuaded A Gong Xiao Zhong to cooperate to produce 203648 A 6. _ V. Description of invention () Ph4-Ph41 = Pc3-Pc31 Therefore, in this case, the same effects as above can also be obtained . The difference β balance valve 2 moves the cold water valve body 21a and the hot water valve body 22a according to the left and right, and changes the size of each opening surface inversely according to the inverse proportion. The opening ratio can be obtained at will. The pressure acting on the piston 23 The differential pressure between the pseudo-cold water path 3 and the cold water path 31; and the differential pressure between the hot water path 4 and the hot water path 41 acts on the piston 24, this point can also be noted. That is, the pressure acting on each piston, in this case, is of course smaller than the above example. Therefore, the leakage that occurs between the piston 23 and the guide hole 73c and the piston 24 and the guide hole 74c is also smaller than the above example, and the influence of the leakage on the temperature of the hot water in the mixing passage 5 will be smaller and reduced. Therefore, the ratio of the hot and cold water flow rate corresponding to the opening ratio of the cold and hot water mixing valve can be automatically corrected by the differential pressure balance valve; since the cold and hot water mixing device has the desired ratio between the ports, it can be correctly executed Temperature control of outflow hot water. In addition, the cold and hot water mixing valve 1 in this example is like a disc valve. [Effects of the invention] The cold water valve and the hot water valve are provided on the left and right sides, and the cold water valve is installed near the cold water channel and the mixing channel, and the hot water valve is installed near the hot water channel and the mixing tunnel. Differential pressure balancing valve. It can keep the pressure difference between the upstream and downstream sides of the cold water channel and hot water channel, and the primary and secondary sides of the hot water valve to a certain value. Moreover, it can maintain the flow of cold water and hot water. The flow ratio is equal to the opening ratio of the cold and hot water mixing valve. Therefore, the flow ratio obtained by the cold and hot water mixing valve installed upstream can be maintained at the opening ratio of the mixing valve without changing the flow ratio. An effective mixing device can be provided. Please install the mixing device (please read the precautions before filling in the wooden page). Order _ Line · This paper is used in the 5k scale side of the BS home standard (CNS) > H regulations (210x297 g; Jt) 11 203648 Λ 6 η 6 V. Description of the invention () Even if there is leakage of cold and hot water from the piston provided in the valve, the water history difference between the two indiums of the piston is not so great, and Even if there is a phenomenon of male and female leakage of hot and cold water from the thinner connecting shaft in the middle, the flow rate can be smaller due to the smaller surface area of the leakage, so there will be no temperature change due to the leakage of cold and hot water. In addition, it also has the following effects: the cold water valve and the hot water M in the cold and hot water mixing valve are respectively equipped with a two-section valve with a W-shaped front and back, the cold water circuit 3 and the mixing channel 5; and the hot water circuit 4 and The pressure difference between the front and back flow of the pistons 23 and 24 in the mixing passage 5 is reduced, and the leakage of cold and hot water is reduced. Therefore, the temperature error due to the leakage of cold and hot water of the pistons 23 and 24 will also change For very small. Brief description of the circle type: The first sham pseudo represents the rough broken dough of an embodiment of the present invention; the second image represents the rough sectional view of different embodiments; the third diagram pseudo represents the cold and hot water mixing device of the conventional example Rough cross-section (please read the precautions before writing this page) Install & Strand-Central Standard of the Ministry of Economic Affairs and β-work dissipation cooperation Duin 5i Original paper 51 · • Standard use in the middle of 8 trapped home standards (CNS) TM regulations (210X297 public;! Ί) 12

Claims (1)

丨公 「一^------------- !_.1月_丨1多止I—smmJ A7 B7 C7 D7 經濟部中央律竿^β工请費合作社印髮丨 Public 『一 ^ -------------! _. January_ 丨 1 more than I—smmJ A7 B7 C7 D7 Central Law of the Ministry of Economic Affairs 本纸?艮尺度適用中囡®家榡準(CNS)甲4规格(210 X 297公处) 六、申請專利範圍 第80108266號專利案申諳專利範圍修正本 修正日期:82年2月 1.—種冷熱水混合裝置,包括一冷熱水混合閥,該冷熱 水混合閥偽於一次側之冷水路及熱水路設置冷水閥及 熱水閥,並藉驅動手段可調整冷、熱水閥之各開口面 積;其待徽在於更設有一差壓平衡閥,其傜由: 閥體,傜分別設於該冷熱水混合閥二次刨冷水路 、熱冰路與混合通路之間; 活塞,傣嵌入引導孔内,承受混合通路内之壓力 、及藉連通路導入之該冷水閥一次側冷水路之壓力; 活塞,傜嵌入引導孔内,承受混合通路内之壓力 、及藉連通路導入之該熱水閥一次側熱水路之壓力; 隔壁,設於冷水路與熱水路之間,並延伸入&閥 體,將該閥體分成二受壓部;及,. 連結軸,傜貫通冷水路與熱水路之隔壁,所構成 .而使冷熱水混合閥二次側之冷水路、熱水路的流路 截面楨,分別成反比例變化。 2 .如申請專利範圍第1項所述之冷熱水混合裝置;其中 ,該冷熱水混合閥偽一支軸迪動冷水閥、熱水閥, 且可成反比例地調整各開口而稻。 3 .如申請專利範圍第1項所述之冷熱水混合裝罝;其中 ,該冷水閥及熱水閥之開口而積可菇驅劻手段調整, 而該驅動手段傜依插入混合通路中之溫度檢出器的檢 出溫度,與設定溫度之溫度差而驅動。 oi.y.丄υ,υυυ 203648 A7 B7 C7 D7 a、申請專利範園 烴濟部中央抹竿局8工消费合作社印製 4. 如申諳專利範圍第1或3項所述之冷熱水混合装置; 其中,該冷水閥及熱水閥傜藉軸連结,且該軸傜藉馬 逹進退移動,而冷水閥與熱水閥之開口面積傜成反比 例變化。 5. 如申請專利範圍第1項所述之冷熱水混合裝置;其中 ,該差壓平衡閥之冷水閥及熱水閥均傜分別由二個閥 體所構成之二段閥,且分別嵌入二引導孔之二活寒的 外側,分別承受由連通路導入冷水閥二次側之冷水路 的壓力,及由連通路導入熱水閥二次側之熱水路的壓 力。 6. 如申請專利範圍第5項所述之冷熱水混合裝置;偽將 該冷熱水混合閥設罝成,藉一支軸而可成反比例地調 整冷水閥、熱水閥之各開口面積。 7. 如申諳專利範圍第5項所述之冷熱水混合裝置;其中 ,該冷水閥及熱水閥之開口面積可藉驅動手段調整, 而該驅動手段傜依插入混合通路中之溫度檢出器的檢 出溫度.與設定溫度之溫度差而驅動。 8. 如申請專利範圍第5或7項所述之冷熱水混合裝置; 其中.該冷水閥及熱水閥偽锘軸迪結,該軸偽藉馬逹 進退移動,而各開口而積係成反比例地變化。 請 先 閲 讀 背 面* 之 注 意 事 項 再 塡 寫― 4 頁 裝 訂 線 本纸張尺度適用中國國家標準(CNS)甲<1规格(210 X 297公分) oi.y.iu.uThis paper? The Burgundy Standard applies to CNS® Home Standard (CNS) Grade 4 (210 X 297 Offices). Six. Patent Application No. 80108266. Patent Case Amendment to the Patent Scope Amendment Date: February 82, 1. Hot and cold The water mixing device includes a cold and hot water mixing valve. The cold and hot water mixing valve is provided with a cold water valve and a hot water valve on the cold water path and hot water path of the primary side, and each opening area of the cold and hot water valve can be adjusted by driving means ; The pending symbol is that there is a differential pressure balance valve, whose Tai consists of: a valve body, which is located between the secondary cold water path, the hot ice path and the mixing passage of the cold and hot water mixing valve; the piston and the Dai are inserted into the guide hole Inside, withstand the pressure in the mixing channel, and the pressure of the primary cold water channel of the cold water valve introduced through the communication channel; the piston, 傜 is embedded in the guide hole, withstand the pressure in the mixing channel, and the hot water valve introduced through the communication channel The pressure of the primary hot water circuit; the next door is located between the cold water channel and the hot water channel and extends into the & valve body, which divides the valve body into two pressure-receiving parts; and, the connecting shaft connects the cold water channel with Next to the hot water road, constituted The cross sections of the cold water and hot water channels on the secondary side of the cold and hot water mixing valve change in inverse proportion. 2. The cold and hot water mixing device as described in item 1 of the patent application scope; wherein, the cold and hot water mixing valve moves the cold water valve and the hot water valve with a pseudo axis, and can adjust each opening inversely proportional to the rice. 3. The hot and cold water mixing device as described in item 1 of the scope of patent application; wherein, the openings of the cold water valve and the hot water valve are adjusted by means of mushroom drive, and the driving means depends on the temperature inserted into the mixing path The detected temperature of the detector is driven by the temperature difference between the set temperature and the set temperature. oi.y. 丄 υ, υυυ 203648 A7 B7 C7 D7 a. Patent application. Printed by the Central Moisture Bureau of the Ministry of Hydrocarbon Economy of the 8th Industrial Consumer Cooperative 4. As claimed in item 1 or 3 of the patent scope. Device; wherein, the cold water valve and the hot water valve are connected by a shaft, and the shaft water is moved forward and backward by a horse, and the opening area of the cold water valve and the hot water valve changes inversely proportionally. 5. The cold and hot water mixing device as described in item 1 of the patent scope; wherein the cold water valve and the hot water valve of the differential pressure balance valve are two-stage valves composed of two valve bodies, and are respectively embedded in two The outside of the second cold hole of the guide hole respectively bears the pressure of the cold water channel leading from the communication channel to the secondary side of the cold water valve and the pressure of the hot water channel leading from the communication channel to the secondary side of the hot water valve. 6. The cold and hot water mixing device as described in item 5 of the patent scope; the cold and hot water mixing valve is pseudo-designed, and the opening area of the cold water valve and the hot water valve can be adjusted inversely proportionally by a shaft. 7. The cold and hot water mixing device as described in item 5 of the patent scope; wherein the opening area of the cold water valve and the hot water valve can be adjusted by the driving means, and the driving means is detected according to the temperature inserted into the mixing passage The detected temperature of the device is driven by the temperature difference from the set temperature. 8. The cold and hot water mixing device as described in item 5 or 7 of the patent application scope; wherein. The cold water valve and the hot water valve are pseudo-shafted, and the shaft is moved forward and backward by the horse, and each opening is integrated into Changes inversely. Please read the notes on the back * first, and then write-4 page binding line
TW080108266A 1990-10-19 1991-10-19 Hot and cold water mixing apparatus TW203648B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990110026U JPH0720455Y2 (en) 1990-10-19 1990-10-19 Hot water mixing device

Publications (1)

Publication Number Publication Date
TW203648B true TW203648B (en) 1993-04-11

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Application Number Title Priority Date Filing Date
TW080108266A TW203648B (en) 1990-10-19 1991-10-19 Hot and cold water mixing apparatus

Country Status (3)

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JP (1) JPH0720455Y2 (en)
KR (1) KR950007392B1 (en)
TW (1) TW203648B (en)

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JP2004108530A (en) * 2002-09-20 2004-04-08 Masayuki Sakamoto Automatic temperature controlling mixing equipment
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CN115054768B (en) * 2022-06-27 2023-05-26 西南医科大学 Medical care intelligent transfusion device with constant temperature structure
CN116250722A (en) * 2023-05-15 2023-06-13 广东顺德科锐玛电器有限公司 Coffee machine

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JP2676788B2 (en) * 1988-06-09 1997-11-17 松下電器産業株式会社 Automatic pressure control valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106958669A (en) * 2017-05-22 2017-07-18 东莞市皓奇企业管理服务有限公司 The application method of smart home Anti-drip water mixing valve

Also Published As

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JPH0720455Y2 (en) 1995-05-15
KR920008422A (en) 1992-05-28
KR950007392B1 (en) 1995-07-10
JPH0466467U (en) 1992-06-11

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