TW201400772A - Electric water heating tank device - Google Patents
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Abstract
Description
本發明係有關於一種電熱水箱裝置，具有避免熱水箱加熱時箱內液體形成水蒸汽造成體積膨脹，膨脹之水蒸汽、熱水由熱水龍頭流出而燙傷使用者之功效。
The invention relates to an electric hot water tank device, which has the effects of avoiding the volume expansion caused by the formation of water vapor in the liquid in the tank when the hot water tank is heated, and the water vapor and the hot water which are expanded are discharged from the hot water tap to burn the user.
按，電熱水箱裝置，其結構如第一、二圖所示，具有：一熱水箱１０，內部設加熱器。一冷水進水管１１，一端與熱水箱１０底部連接，另一端連接水源。一熱水出水導管１２，一端與熱水箱１０頂部連接，另一端與熱水龍頭１２０連接。一觸控開關１３及一電磁閥１４，電磁閥１４受觸控開關１３所控制。其中，觸控開關１３設於熱水龍頭１２０位置，電磁閥１４設於冷水進水管１１上，當使用者控制觸控開關１３作動，該觸控開關１３可控制電磁閥１４同步作動，控制冷水由冷水進水管１１進入熱水箱１０內，而熱水由熱水龍頭１２０流出。一毛細管１５，係連接於熱水出水導管１２與排水系統１６間，當熱水箱１０加熱時，箱內液體漸漸蒸發成水蒸汽，箱內水蒸汽體積膨脹，箱內部份高壓水蒸汽可經由毛細管１５由排水系統１６排出。
惟，若排水系統１６阻塞，當使用熱水時，因虹吸原理，排水系統１６內之汙水會經由毛細管１５吸入熱水出水導管１２內，造成飲水衛生問題，如第二圖所示。
為改善上述缺失，有業者如第三圖所示，將毛細管１５移除，於冷水進水管１１以一三通接頭１７連接一膨脹水箱１８。該膨脹水箱１８外殼係由兩片左、右凹型蓋１８０、１８１以口對口方式所組成，其中左凹型蓋１８０端與冷水進水管１１連接，右凹型蓋１８１蓋面具氣孔１８１０與外側空氣連通，內部固定有一凹狀軟閥片１８１１。使用時，按壓觸控開關１３，電磁閥１４同步連動，冷水由冷水進水管１１進入熱水箱１０內，熱水箱１０內的熱水由熱水龍頭１２０流出。其中，膨脹水箱１８在熱水出水時，藉由冷水進水壓力及右凹型蓋１８１的氣孔１８１０將外面空氣吸入，使膨脹水箱１８內的冷水經由三通接頭１７排出，形成負壓。當觸控開關１３及電磁閥１４停止作動（即停止出水），利用白努利原理，形成負壓之膨脹水箱１８會將熱水箱１０內的部份熱水吸入，降低熱水箱１０內的水位，使熱水箱１０呈現非滿水位狀態，俾當熱水箱１０開始加熱時，液體加熱膨脹之水蒸汽體積不會因熱水箱１０內無膨脹空間而經由熱水出水導管１２熱水龍頭１２０流出，避免熱水流出燙傷使用者。
上述習知電熱水箱裝置雖改善習知第一、二圖安裝毛細管１５，若排水系統１６阻塞所衍生之飲水衛生問題。但膨脹水箱１８在止水狀態能吸收熱水箱１０的液體量，主要係受冷水進水壓力所控制，如果觸控開關１３控制熱水出水量小，相對的冷水進水壓力低，膨脹水箱１８的負壓相對小，在止水時，膨脹水箱１８所能吸入的熱水箱１０內的液體量相對降低，致使熱水箱１０降低之水量空間不足以應付液體加熱時所膨脹的體積，熱水常仍會由熱水龍頭１２０流出，燙傷使用者。
本發明人有鑑於習知電熱水箱裝置在使用上分別具有上列缺失，乃加以設計改良，遂有本發明之產生。According to the electric hot water tank device, the structure is as shown in the first and second figures, and has a hot water tank 10 with a heater inside. A cold water inlet pipe 11 has one end connected to the bottom of the hot water tank 10 and the other end connected to a water source. A hot water outlet conduit 12 has one end connected to the top of the hot water tank 10 and the other end connected to the hot water tap 120. A touch switch 13 and a solenoid valve 14 are controlled by the touch switch 13. The touch switch 13 is disposed at the position of the hot water tap 120, and the electromagnetic valve 14 is disposed on the cold water inlet pipe 11. When the user controls the touch switch 13 to operate, the touch switch 13 can control the synchronous operation of the electromagnetic valve 14 to control the cold water. The cold water inlet pipe 11 enters the hot water tank 10, and the hot water flows out from the hot water tap 120. A capillary tube 15 is connected between the hot water outlet conduit 12 and the drainage system 16. When the hot water tank 10 is heated, the liquid in the tank gradually evaporates into water vapor, and the volume of water vapor in the tank expands, and the high-pressure steam inside the tank can be It is discharged by the drainage system 16 via the capillary 15 .
However, if the drainage system 16 is blocked, when hot water is used, the sewage in the drainage system 16 will be sucked into the hot water outlet conduit 12 via the capillary 15 due to the siphon principle, causing drinking water hygiene problems, as shown in the second figure.
In order to improve the above-mentioned deficiency, the manufacturer removes the capillary 15 as shown in the third figure, and connects the expansion water tank 18 to the cold water inlet pipe 11 via a three-way joint 17. The casing of the expansion tank 18 is composed of two left and right concave covers 180, 181 in a mouth-to-mouth manner, wherein the left concave cover 180 end is connected to the cold water inlet pipe 11, and the right concave cover 181 covers the mask air hole 1810 to communicate with the outside air. A concave soft valve piece 1811 is fixed inside. In use, the touch switch 13 is pressed, the electromagnetic valve 14 is synchronously linked, and the cold water enters the hot water tank 10 from the cold water inlet pipe 11, and the hot water in the hot water tank 10 flows out from the hot water tap 120. In the expansion water tank 18, when the hot water is discharged, the outside air is sucked in by the cold water inlet pressure and the air holes 1810 of the right concave cover 181, so that the cold water in the expansion water tank 18 is discharged through the three-way joint 17 to form a negative pressure. When the touch switch 13 and the solenoid valve 14 stop operating (ie, stop the water discharge), the expansion water tank 18 forming the negative pressure is used to inhale part of the hot water in the hot water tank 10 by using the white Nuori principle, and the hot water tank 10 is lowered. The water level causes the hot water tank 10 to assume a non-full water level state. When the hot water tank 10 starts to heat, the volume of the water heated and expanded water vapor is not heated by the hot water outlet conduit 12 due to the lack of expansion space in the hot water tank 10. The faucet 120 flows out to prevent hot water from flowing out to burn the user.
The above-mentioned conventional electric hot water tank device improves the sanitary problems of the drinking water derived from the drainage system 16 although the first and second mounting capillary tubes 15 are improved. However, the expansion tank 18 can absorb the amount of liquid in the hot water tank 10 in the water stop state, mainly controlled by the cold water inlet pressure. If the touch switch 13 controls the hot water discharge amount is small, the relative cold water inlet pressure is low, and the expansion water tank The negative pressure of 18 is relatively small. When the water is stopped, the amount of liquid in the hot water tank 10 that can be sucked into the expansion tank 18 is relatively lowered, so that the water volume of the hot water tank 10 is insufficient to cope with the volume expanded when the liquid is heated. Hot water will often flow out of the hot water tap 120, scalding the user.
The present inventors have made improvements in design in view of the fact that the conventional electric hot water tank device has the above-mentioned missing in use, and the present invention has been produced.
爰是，本發明之主要目的係在提供一種可維護飲水衛生及避免熱水箱加熱時膨脹之熱水經由熱水龍頭流出燙傷使用者之電熱水箱裝置。
本發明之主要特徵係在冷水進水管位在熱水箱與膨脹水箱間，設置有一抽水幫浦，該抽水幫浦可對膨脹水箱提供固定的吸力，俾熱水箱止水時，膨脹水箱因負壓可吸引熱水箱內固定的水量進入膨脹水箱內，維持熱水箱內固定的無水膨脹空間，使熱水箱加熱時熱水箱內有足夠的膨脹空間，避免加熱時熱水流出燙傷使用者。
Therefore, the main object of the present invention is to provide an electric hot water tank device which can maintain the sanitary of drinking water and prevent hot water which expands when the hot water tank is heated, and flows out of the scalded user via the hot water tap.
The main feature of the present invention is that a cold water inlet pipe is disposed between the hot water tank and the expansion water tank, and a pumping pump is provided. The pumping pump can provide a fixed suction force to the expansion water tank, and when the hot water tank stops water, the expansion water tank is The negative pressure can attract the fixed amount of water in the hot water tank into the expansion water tank, and maintain the waterless expansion space fixed in the hot water tank, so that there is sufficient expansion space in the hot water tank when the hot water tank is heated, so as to avoid hot water scalding during heating. user.
有關本發明為達成上述目的、功效所採用之技術手段及結構，茲舉以下實施例加以說明。
請參閱第四圖所示，本發明實施例之電熱水箱裝置１如習知般具有：
熱水箱２０，內部具有加熱器，該加熱器可對熱水箱２０內的水加熱。
冷水進水管２１，一端連接水源，另一端連接至熱水箱２０的底部。
熱水出水導管２２，一端與熱水箱２０頂部連接，另一端與一熱水龍頭２２０連接。
膨脹水箱２３，係與冷水進水管２１相通，於冷水進水管２１連接一三通接頭２１０，膨脹水箱２３的水口２３０再以連接管與三通接頭２１０連接，俾膨脹水箱２３的水口與冷水進水管２１相通。該膨脹水箱２３的外殼係由兩片左右凹型蓋２３１、２３２以口對口方式鎖固而成，水口２３０位在左凹型蓋２３１蓋面上。於膨脹水箱２３內部固定有一軟閥片２３３，該軟閥片２３３呈凹狀，凹口面對水口２３０且位在右凹型蓋２３２內，右凹型蓋２３２的蓋面設置有氣孔２３４。
觸控開關２４及電磁閥２５，觸控開關２４係設於熱水龍頭２２０位置，用以控制電磁閥２５作動與否，使水源的水經由冷水進水管２１進入熱水箱２０內，進而控制熱水龍頭２２０的出水或止水；電磁閥２５設於冷水進水管２１上且位於水源與膨脹水箱２３間，用以控制水源的冷水經由冷水進水管２１進入熱水箱２０內。觸控開關２４一觸控作動，電磁閥２５便控制水源的冷水經由冷水進水管２１進入熱水箱２０內，且藉水壓使熱水龍頭２２０出水；反之，未按壓觸控開關２４，電磁閥２５未作動，熱水箱２０停止進水，熱水龍頭２２０未流出熱水。
本發明之主要改良係在：
冷水進水管２１位在熱水箱２０與膨脹水箱２３間設置有一抽水幫浦２６，該抽水幫浦２６可抽吸冷水進水管２１內的水往熱水箱２０推送，且受觸控開關２４控制，與電磁閥２５同步作動。藉由抽水幫浦２６的設置，俾水進入熱水箱２０的進水壓力、抽水幫浦２６的吸力作用及外面空氣經由氣孔２３４吸入擠壓，可使膨脹水箱２３內之軟閥片２３３內凹側的空氣形成穩定的負壓，利用白努利原理，使得電磁閥２５控制熱水箱２０停止進水時，膨脹水箱２３內的固定負壓將熱水箱２０內的水，經由水口２３０吸入膨脹水箱２３內，使熱水箱２０內呈現無滿水狀況（如第六圖所示），即熱水箱２０內留有穩定的水加熱時的膨脹空間，俾熱水箱２０加熱時水蒸汽體積膨脹，熱水箱２有穩定的膨脹空間可容納加熱時水蒸汽的膨脹體積，俾熱水不會任意由熱水龍頭２２０流出，避免燙傷使用者。當使用者要飲用熱水時，按壓觸控開關２４，電磁閥２５打開及抽水幫浦２６作動，冷水藉由水壓及抽水幫浦２６的抽吸進入熱水箱２０內，熱水由熱水龍頭２２０流出；此時，原在膨脹水箱２３內的水及水源的水被抽水幫浦２６抽往熱水箱２０（如第五圖所示），熱水箱２０內形成滿水位。當熱水龍頭２２０停止出水（即電磁閥２５關閉），原熱水箱２０內的部份水便會被膨脹水箱２３內的負壓抽吸充滿整個膨脹水箱２３，使熱水箱２０內具有與膨脹水箱２３之內容體積相等的膨脹空間，以供熱水箱２０內的水被加熱時水蒸汽膨脹用，避免水蒸汽膨脹時熱水箱２０內無膨脹空間，熱水經由熱水龍頭２２０流出燙傷使用者。
由上列之說明可知，本發明藉由抽水幫浦２６的設置，且抽水幫浦２６設於冷水進水管２１之膨脹水箱２３與熱水箱２０間，可使膨脹水箱２３具有固定的及足夠的吸力，使止水狀態熱水箱２０內的熱水能穩定且固定量的回流入膨脹水箱２３內，使熱水箱２０加熱時具有固定的水蒸汽膨脹空間，避免止水狀態熱水經由熱水龍頭２２０流出燙傷使用者，
綜觀上述，本發明不僅具新穎、發明性，且具產業利用性，依法提出發明專利申請，謹請准予專利。The technical means and structure of the present invention for achieving the above objects and effects will be described by way of the following examples.
Referring to the fourth figure, the electric hot water tank device 1 of the embodiment of the invention has as follows:
The hot water tank 20 has a heater inside, which heats the water in the hot water tank 20.
The cold water inlet pipe 21 has one end connected to the water source and the other end connected to the bottom of the hot water tank 20.
The hot water outlet conduit 22 has one end connected to the top of the hot water tank 20 and the other end connected to a hot water tap 220.
The expansion water tank 23 is connected to the cold water inlet pipe 21, and a cold water inlet pipe 21 is connected to a three-way joint 210. The water port 230 of the expansion water tank 23 is connected to the three-way joint 210 by a connecting pipe, and the water inlet and the cold water of the expansion water tank 23 are introduced. The water pipes 21 are connected. The outer casing of the expansion water tank 23 is formed by two-ported concave-shaped covers 231, 232 which are interlocked in a mouth-to-mouth manner, and the water nozzle 230 is located on the cover surface of the left concave cover 231. A soft valve piece 233 is fixed inside the expansion water tank 23, the soft valve piece 233 is concave, the notch faces the nozzle 230 and is located in the right concave cover 232, and the cover surface of the right concave cover 232 is provided with the air hole 234.
The touch switch 24 and the electromagnetic valve 25 are disposed at the position of the hot water tap 220 to control whether the electromagnetic valve 25 is actuated or not, so that water of the water source enters the hot water tank 20 via the cold water inlet pipe 21, thereby controlling the heat. The water outlet or water stop of the faucet 220; the electromagnetic valve 25 is disposed on the cold water inlet pipe 21 and located between the water source and the expansion water tank 23, and the cold water for controlling the water source enters the hot water tank 20 via the cold water inlet pipe 21. The touch switch 24 is touch-operated, and the electromagnetic valve 25 controls the cold water of the water source to enter the hot water tank 20 via the cold water inlet pipe 21, and the hot water tap 220 is discharged by the water pressure; otherwise, the touch switch 24 is not pressed, and the electromagnetic valve is not pressed. 25 is not actuated, the hot water tank 20 stops entering the water, and the hot water tap 220 does not flow out of the hot water.
The main improvements of the invention are:
A pumping pump 26 is disposed between the hot water tank 20 and the expansion water tank 23, and the pumping pump 26 can pump the water in the cold water inlet pipe 21 to the hot water tank 20, and is touched by the touch switch 24. Control, synchronized with the solenoid valve 25. By the setting of the pumping pump 26, the water inlet pressure of the water entering the hot water tank 20, the suction force of the pumping pump 26, and the outside air being sucked and squeezed through the air holes 234, the soft valve piece 233 in the expansion water tank 23 can be made. The concave side air forms a stable negative pressure. When the solenoid valve 25 controls the hot water tank 20 to stop entering the water, the fixed negative pressure in the expansion water tank 23 passes the water in the hot water tank 20 through the nozzle 230. The inside of the hot water tank 20 is sucked into the expansion water tank 23, so that the water tank 20 is not filled with water (as shown in the sixth figure), that is, the expansion space of the hot water tank 20 is stabilized when the water is heated, and the hot water tank 20 is heated. The water vapor volume expands, and the hot water tank 2 has a stable expansion space to accommodate the expansion volume of the water vapor during heating, and the hot water does not arbitrarily flow out from the hot water tap 220 to avoid scalding the user. When the user wants to drink hot water, the touch switch 24 is pressed, the electromagnetic valve 25 is opened, and the pumping pump 26 is actuated. The cold water is pumped into the hot water tank 20 by the water pressure and the suction pump 26, and the hot water is heated. The faucet 220 flows out; at this time, the water originally in the expansion tank 23 and the water source are pumped by the pumping pump 26 to the hot water tank 20 (as shown in FIG. 5), and a full water level is formed in the hot water tank 20. When the hot water tap 220 stops discharging water (ie, the solenoid valve 25 is closed), part of the water in the original hot water tank 20 is filled with the negative pressure in the expansion water tank 23 to fill the entire expansion water tank 23, so that the hot water tank 20 has The expansion space of the expansion water tank 23 has the same volume of expansion space, so that the water in the hot water tank 20 is heated to expand the water vapor, so as to prevent the water vapor from expanding, the hot water tank 20 has no expansion space, and the hot water flows out through the hot water tap 220. By.
As can be seen from the above description, the present invention is provided by the pumping pump 26, and the pumping pump 26 is disposed between the expansion water tank 23 of the cold water inlet pipe 21 and the hot water tank 20, so that the expansion water tank 23 can be fixed and sufficient. The suction force causes the hot water in the hot water tank 20 to be stably and a fixed amount of reflux into the expansion water tank 23, so that the hot water tank 20 has a fixed water vapor expansion space when heated, and avoids the water stop state. The hot water tap 220 flows out of the burned user.
Looking at the above, the present invention is not only novel, inventive, but also has industrial applicability, and applications for invention patents are filed according to law, and patents are permitted.
10．．．熱水箱10. . . Hot water tank
11．．．冷水進水管11. . . Cold water inlet pipe
12．．．熱水出水導管12. . . Hot water outlet conduit
120．．．熱水龍頭120. . . Hot water tap
13．．．觸控開關13. . . Touch switch
14．．．電磁閥14. . . The electromagnetic valve
15．．．毛細管15. . . Capillary
16．．．排水系統16. . . Drainage system
17．．．三通接頭17. . . Three-way connector
18．．．膨脹水箱18. . . Expansion tank
180．．．左凹型蓋180. . . Left concave cover
181．．．右凹型蓋181. . . Right concave cover
1810．．．氣孔1810. . . Stomata
1811．．．軟閥片1811. . . Soft valve
1．．．電熱水箱裝置1. . . Electric hot water tank device
20．．．熱水箱20. . . Hot water tank
21．．．冷水進水管twenty one. . . Cold water inlet pipe
22．．．熱水出水導管twenty two. . . Hot water outlet conduit
220．．．熱水龍頭220. . . Hot water tap
23．．．膨脹水箱twenty three. . . Expansion tank
210．．．三通接頭210. . . Three-way connector
230．．．水口230. . . Water outlet
231．．．左凹型蓋231. . . Left concave cover
232．．．右凹型蓋232. . . Right concave cover
233．．．軟閥片233. . . Soft valve
234．．．氣孔234. . . Stomata
24．．．觸控開關twenty four. . . Touch switch
25．．．電磁閥25. . . The electromagnetic valve
26．．．抽水幫浦26. . . Pumping pump
第一圖所示係第一習知電熱水箱裝置結構示意圖。
第二圖所示係第一習知電熱水箱裝置之排水系統阻塞使用示意圖。
第三圖所示係第二習知電熱水箱裝置結構示意圖。
第四圖所示係本發明實施例之結構示意圖。
第五圖所示係本發明實施例出水狀態結構示意圖。
第六圖所示係本發明實施例止水狀態結構示意圖。
The first figure shows the structure of the first conventional electric hot water tank device.
The second figure shows a schematic diagram of the use of the drainage system of the first conventional electric hot water tank device.
The third figure shows the structure of the second conventional electric hot water tank device.
The fourth figure shows a schematic structural view of an embodiment of the present invention.
The fifth figure is a schematic view showing the structure of the water discharge state of the embodiment of the present invention.
The sixth figure is a schematic view showing the structure of the water stop state of the embodiment of the present invention.
1．．．電熱水箱裝置1. . . Electric hot water tank device
20．．．熱水箱20. . . Hot water tank
21．．．冷水進水管twenty one. . . Cold water inlet pipe
22．．．熱水出水導管twenty two. . . Hot water outlet conduit
220．．．熱水龍頭220. . . Hot water tap
23．．．膨脹水箱twenty three. . . Expansion tank
210．．．三通接頭210. . . Three-way connector
230．．．水口230. . . Water outlet
231．．．左凹型蓋231. . . Left concave cover
232．．．右凹型蓋232. . . Right concave cover
233．．．軟閥片233. . . Soft valve
234．．．氣孔234. . . Stomata
24．．．觸控開關twenty four. . . Touch switch
25．．．電磁閥25. . . The electromagnetic valve
26．．．抽水幫浦26. . . Pumping pump
Claims (4)
熱水箱，內部具有加熱器，加熱器可對熱水箱內的水加熱；
冷水進水管，一端連接水源，另一端與熱水箱連接；
熱水出水導管，一端與熱水箱連接，另一端與一熱水龍頭連接；
膨脹水箱，具有水口與冷水進水管相通，內部固定有一凹狀軟閥片，該軟閥片凹口面對水口，膨脹水箱箱蓋背對水口端的蓋面設置有氣孔；
觸控開關及電磁閥，觸控開關係設於熱水龍頭位置，用以控制電磁閥作動，進而控制熱水龍頭出水或止水；電磁閥設於冷水進水管上且位於水源與膨脹水箱間，用以控制冷水經由冷水進水管進入熱水箱；
本發明之主要改良係在：
冷水進水管位在熱水箱與膨脹水箱間設置有一抽水幫浦，該抽水幫浦可抽吸冷水進水管內的水往熱水箱推送，且受觸控開關控制，與電磁閥同步作動者。An electric hot water tank device having:
a hot water tank having a heater inside, and the heater can heat the water in the hot water tank;
a cold water inlet pipe, one end connected to the water source and the other end connected to the hot water tank;
a hot water outlet pipe, one end connected to the hot water tank and the other end connected to a hot water tap;
The expansion water tank has a nozzle communicating with the cold water inlet pipe, and a concave soft valve piece is fixed inside, the soft valve piece notch faces the nozzle, and the expansion water tank cover is provided with air holes on the cover surface of the nozzle end;
The touch switch and the electromagnetic valve are provided at the position of the hot water tap to control the actuation of the solenoid valve, thereby controlling the water outlet or the water stop of the hot water tap; the electromagnetic valve is arranged on the cold water inlet pipe and located between the water source and the expansion water tank. To control the cold water to enter the hot water tank via the cold water inlet pipe;
The main improvements of the invention are:
The cold water inlet pipe is provided with a pumping pump between the hot water tank and the expansion water tank, and the pumping pump can pump the water in the cold water inlet pipe to the hot water tank, and is controlled by the touch switch, and is synchronized with the electromagnetic valve. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101122181A TWI532959B (en) | 2012-06-21 | 2012-06-21 | Electric water tank device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101122181A TWI532959B (en) | 2012-06-21 | 2012-06-21 | Electric water tank device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201400772A true TW201400772A (en) | 2014-01-01 |
| TWI532959B TWI532959B (en) | 2016-05-11 |
Family
ID=50344984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW101122181A TWI532959B (en) | 2012-06-21 | 2012-06-21 | Electric water tank device |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI532959B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839538A (en) * | 2017-04-17 | 2017-06-13 | 珠海格力电器股份有限公司 | Expansion canister assembly and unit |
-
2012
- 2012-06-21 TW TW101122181A patent/TWI532959B/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839538A (en) * | 2017-04-17 | 2017-06-13 | 珠海格力电器股份有限公司 | Expansion canister assembly and unit |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI532959B (en) | 2016-05-11 |
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