GB2366609A

GB2366609A - A gas heater for mounting within a wall

Info

Publication number: GB2366609A
Application number: GB0022346A
Authority: GB
Inventors: Wen-I Chen
Original assignee: Taiwan Sakura Corp
Current assignee: Taiwan Sakura Corp
Priority date: 2000-09-12
Filing date: 2000-09-12
Publication date: 2002-03-13
Also published as: DE20016017U1; GB0022346D0

Abstract

A gas heater adapted for mounting within a wall 5 comprises a main body 2 and an operating panel 3, the main body having a combustion chamber 24 (not shown) and a cold water inlet 21, hot water outlet 23 and gas inlet 25. The main body may be retractably and detachably mounted in a housing 4 previously embedded in a hole in the wall. When mounted, the pipes 51-53 are safely shielded and hidden from view by the operating panel. Preferably the water heater has a control circuit comprising a water flow detector, a water temperature detector, a gas servo valve and a gas/air ratio valve for automatically maintaining the temperature of the hot water generated to that preset by control panel 30. The main body preferably comprises an air inlet chamber 27, with a fan motor 271 to draw air in from outside and expel it into the combustion chamber, to mix with the gas therein, the housing rear preferably including separate and remote air inlet and waste-gas outlet means. The gas heater may also comprise a residue fire safety device 220 or a temperature fuse that activates automatically to cut-off the gas supply when the temperature within the main housing exceeds a pre-set amount.

Description

2366609 EMBEDDED TYPE GAS WATER HEATER

FIELD OF THE INVENTION

The present invention relates to an embedded type gas water 5 heater, wherein a main body is completely embedded in a wall hole, the structures of heating, air input and output, panel are designed specially so that it can be attached and detached conveniently with a high heating efficiency and a beautiful outlook.

10 BACKGROUND OF THE INVENTION

The prior art water heater used in home can be divided into an electric water heater using electric power and gas water heater using gas as power source. Conventional]\... it is prevented to install a gas \.vater heater in a closed space. for example. bathroorn,

15 since it must suffer from a danger of -as draining so as to poison or explode. Therefore. in general. a gas water heater is put in an open space. However, this is inconvenient to operate the gas water heater for openin-, closing and setting. Furthermore, the gas C> - 'D water heater occupies a great space and has a lower efficiency.

20 Furthermore, if a building has no balcony. it is troublesome in installation.

Furthermore, in aeneral, a hanging type gas water heater has ID an operating panel with a temperature adjusting button for I i controllins! the input volume of the gas so as to control the water is possibly changed temperature. However, the floNN, of cold I I by user or weather, or the mixing ratio of gas and air is changed, Therefore, the output hot water -is changed if not be adjusted by an automatic detector and thus the output hot water can not retain in a constant temperature.

5 Another, in general, a gas water heater is installed with a frame sensing pin for sensing frame. If frame is extinguished, then the supply of gas is interrupted. However, if the output hot water is over a temperature suffered by the human body, a danger is induced. Similarly, if the residue temperature of the heat 10 exchanger is too high and the combustion is not interrupted instantly, the mechanic or electronic components therein will be harmed so as to induce some potential danger.

Despite the conventional gas water heater is installed indoors or outdoors, the pipes for mixing fresh air and gas are not arranged 15 properly, which enter into the gas water heater from holes formed on the housing. The waste gas from the combustor is exhausted out from the exhausting holes at topside. Therefore, the arrangement of air inlet and outlet are too complex so that the heating efficiency is affected and the clearness of the peripheral air is 20 polluted. If the wind or rain is too large so that wind or rain will fill into the combustion chamber so as to effect the steadiness of the combustion and possibly, the combustion is incomplete.

Therefore, there is an eager demand for improving the defects in the prior art, and thus a novel design of gas water heater is

ZD 25 necessary.

2 SUMMARY OF THE INVENTION

Accordingly, the primary object of the present invention is to 5 provide an embedded type gas water heater, wherein the structure is almost closed and is completely embedded into the wall hole so that the temperature can be retained and thus the heat efficiency is increased. Especially, since the present invention is embedded into the wall hole, not only heater can be extracted and installed 10 conveniently, but also the space occupied is reduced. Moreover, it will not be effected by the arrangement of balcony, further, the heater of the present invention can be used safely, conveniently and efficiency and has a beautiful outlook.

Another object of the present invention is to provide a 15 embedded type gas water heater, wherein the main body is retractably and detachable embedded into a hole in a wall and only the control panel is exposed out of the wall and the cool and hot water tubes are safety shielded. Therefore, the maintenance and repairing works can be performed easily and conveniently.

20 A further object of the present invention is to provide a embedded type gas water heater, wherein the input hot water can be automatically retained in a preset temperature.

A yet object of the present invention is to provide a embedded type gas water heater, wherein not only combustion air is from 25 outdoor instead of from indoor, but also the exhausting gas from 3 combustion is exhausted outdoors instead of being exhausted indoor. Namely, the whole air. input and output are processed outdoors, individually. Therefore, the cleanness of the indoor air can be retained without any harmful danger.

5 A still object of the present invention is to provide an embedded type gas water heater, the operating panel is not only installed on the wall so as to shield the whole wall, but also cold water pipe, heat water pipe, and gas pipe are shielded wholly so that the shape of the heater is more beautiful.

10 The various objects and advantages of the present invention will be more readily understood from the following detailed description when reading in conjunction with the appended drawing, 15 BRIEF DESCRIPTION OF THE DRAWINGS

Fig. I is a schematic perspective view showing the present invention being embedded into a wall hole.

Fig. 2 is an exploded perspective view of the present invention.

20 Fig. 3 Is an exploded perspective view showing that in the present invention, a housing is installed in a wall hole, and then a main body and an operating panel are installed sequentially.

0 0 Fig. 4 is an exploded perspective view showing that after a main body is italled at the housing in the wall hole, an operating 25 panel is installed.

4 Fig. 5 is an exploded perspective view showing the assembling position of the com-bustor.

Fig. 6 is a front schematic view showing airflow direction for combustion.

5 Fig. 7 is a lateral schematic view showing airflow direction of the input and output air.

Fig. 8 is a partial schematic cross sectional view showing the present invention is embedded in a wall hole.

Fig. 9 is a structural elevation view showing the structure at 10 two sides of an operating panel.

Fig. 10 is a schematic perspective view showing the use of the present invention installed in a wall.

DETAILED DESCRIPTION OF THE PREFERRED

15 EMBODIMENTS Referring to Fig. 1, the embedded type gas water heater of the present invention can be embedded into the wall hole 50 of the wall 5. The interior structure is illustrated in Fig. 2, which includes a main body 2 and an operating panel 3.

20 The main body 2 is received in a wall hole 50. The housing 4 of the main body is enclosed by the wall hole 50, as shown in Figs.

3 and 4. The main body 2 has a frame set 20 installed with at least one cool water tube 23 therein for inputting cold water, an heat exchanger 22 for heating cold water and a hot water tube 23 for 25 outputting hot water. The heat exchanger 22 is heated by a gas combustor 240 in the lower combustion chamber 24 through a gas tube 25, as shown in Fig. 5.

The cool water tube 21 is installed with a flow detector 210 for detecting the inputting flow of cold water. The hot water tube 5 23 is installed with a water temperatur e detector 23 for detecting the output of hot water. The gas tube 25 is installed with a servo valve 250 for switching the input of gas and a ratio valve for adjusting the gas pressure and flow. The flow detector 2 10, water temperature detector 230, servo valve 250 and ratio valve 25 1 are 10 electrically connected to a temperature control circuit of a temperature controlled circuit board 26. Therefore, when the user sets a temperature from a temperature adjusting button 30 on the operating panel 3. The flow detector 2 10 serves to detect the water flow and the water temperature detector 230 serves to detect the 15 outputting temperature of water so as to drive the ratio valve 251 to automatically adjust the inlet flow of gas for combustion so that output hot water may be retained in a predetermined temperature. Furthermore, when the water temperature detector 230 detects that the temperature of hot water is over 90 'C, then the servo 20 valve 250 automatically closes so as to close the input gas. Similarly, the hot water tube wound around the heat exchanger 22 and proper places of the main body 2 are installed with a residue fire safety device 220 and a temperature fuse 221 which are similarly electrically connected to the temperature control circuit 25 It can be set as the temperature of the residue fire is over 100'C, 6 or the temperature with the main body is over I 40'C, then the gas supply is interrupted automatically, A wind chamber 27 is installed adjacent to the combustion chamber 24. An air slit 27 serves to connect the wind chamber 27 5 with the combustion chamber 24. The wind chamber 27 is connected to a fan motor 271, as shown in Fig. 6, so that the air outputted from the fan motor 271 can be filled into the combustion chamber 24 from the wind chamber 27 through the air slit 270 so as to mix with gas and then is combusted in the gas combustor 240.

10 The exhausted gas after combustion is exhausted from above the beat exchanger 22. Furthermore, the fan motor 271 is electrically connected to the control circuit. The rotary of the motor can be changed with the volume of the input gas for adjusting the air inlet Therefore, the input clean air and exhausting air of the combusted 15 gas can be divided without being mixed in order to avoid that the outer strong wind will extinguish fire of the combustor or the exhausting gas will return back. Referring to Fig. 7, the upper and lower rear sides of the housing 4 are installed with an gas exhausting chamber 40 and an air inlet chamber 41 which are 20 isolated by an up per spacer 40 and the lower spacer 410. The housing of the exhausting chamber 40 is installed with a plurality of exhausting holes 410 and an exhausting opening 402, The housing of the exhausting chamber 40 is installed with a plurality of exhausting holes 401 and an exhausting opening 402. The 25 housing of the air inlet chamber 41 is formed with an air inlet 7 holes 411 and an air inlet opening 412. The top of the heat exchanger 22 is further installed with an exhausting mask 222 so as to be connected to the exhausting opening 402. With reference to Figs. 6 and 7, by the driving of the fan motor 271, outdoor air 5 will input the main body from the air inlet hole 411 along the air inletchamber4l. Then, air is extracted by the fan motor 271 to the wind chamber 27 and through the air slit 270, it fills into the combustion chamber 24 to be mixed with the gas. Then, hot exhausting gas flows upwards to the exhausting mask 222 at the 10 top of the heat exchanger 22 to be guided by the exhausting chamber 40 to flow outdoors through the exhausting hole 401. In simply, not only combustion air is from outdoor space instead of from indoor space, but also the exhausting gas from combustion is exhausted outdoors instead of being exhausted indoor. Namely, 15 the whole air input and output are processed outdoors, individually. Therefore, the cleanness of the indoor air can be retained without any harmful danger or poisoning.

The operating panel 3 is assembled to the front side of the main body 2 and a temperature control circuit board 26 is installed, 20 which is electrically connected to the temperature control switch 30. As shown in Fig. 8, the inner side of the top plate of the operating panel 3 has a buckling groove 3 1 so that it can be hooked to the upper edge of the circular flange 42 of the housing 4. Further, referring to Figs. 2, 8 and 9, since left and right sides of 25 the operating panel 3 are installed with respective hook pieces 32.

8 The front plate 201 of the frame set 20 has two sides each installed with a positioning piece 200 so as to be positioned therein. Namely, as shown in Fig. 4, when an operator is desired to install the operating panel 3, by the hook pieces, the operating panel can 5 be installed on the housing 4 and the main body 2 (see Fig. 2) and tightly adhering to the wall surface (as shown in Fig. 10). Besides, as shown in Fig. 4, the cool water tube 21, gas tube 25 and hot water tube 23 are assembled to the cold water pipe 5 1, gas pipe 52, and heat water pipe 53 at the lower side of the wall hole 50. The 10 operating panel 3 is extended with mask portions 33 toward these pipes. With reference to Fig. 8, all the tube can be shielded for improving the outlook of the whole heat exchanger, as shown in Fig. 10. Moreover, user or children are avoided to contact the pipes carelessly so as to be harmed.

15 It is known from the aforesaid structure, since the main body 2 of the heat of the present invention is completely embedded into the wall hole 50 of the wall 5 to be hidden therein. Only the beautiful operating panel 3 exposes indoors, as the bathroom shown in Fig. 10. Therefore, the user may operate it outdoors 20 without needing to move indoors and outdoors. Furthermore, since the main body 2 is completely masked by the housing 4. The actions of air input and output are processed outdoors without flowing into the interior of the main body 2 so as to affect the safety of the fire. Furthermore, the structure is almost closed and 25 is completely embedded into the wall hole so that the temperature 9 can be retained and thus the heat efficiency is improved. Especially, since the present invention is embedded into the wall hole, not only heater can be extracted and installed conveniently, but also the space occupied is reduced. Moreover, it will not be 5 effected by the arrangement of balcony, further, the heater of the present invention can be used safely, conveniently and efficiency and has a beautiful outlook.

Although the present invention has been described with reference to the preferred embodiments, it will be understood that 10 the invention is not limited to the details described thereof.

Various substitutions and modifications have been suggested in the foregoing description, and others will occur to those of ordinary skill in the art. Therefore, all such substitutions and modifications are intended to be embraced within the scope of the 15 invention as defined in the appended claims.

I

Claims

Claims

1. An embedded type gas water heater comprising a main body and an Z:' 1 1 _ operating panel at a front lateral side of the main body, wherein the main body is installed with at least one cool water tube, a heat 5 exchanger, a hot water tube, a cras tube, and a gas combustor below the heat exchanger and for heating; characterized in that:

the main body is wholly embedded inwardly into a wall hole on a wall, so that only the operating panel exposes from a surface of the wall for shieldino, the wall hole.

10 2. The embedded type gas water heater as claimed in claim 1, wherein the main body is housed in a housing with a front opening, and the housing is installed in the wall hole in advance.

3- The embedded type gas water heater as claimed in claim 1, wherein a control circuit board for controlling the input volume of gas is 15 installed in the main body, and a temperature adjusting button electrically connected to the control circuit board and capable of presetting a temperature is installed on the operating panel.

M_ 4. The embedded type gas water heater as claimed in claim I, wherein a cool water tube is installed with a flow detector; a hot water tube is 20 installed with a water temperature detector; a gas tube is installed with a servo valve for switching input of gas and a ratio valve for adjusting a gas pressure and amount of flow; the flow detector, water temperature detector, servo valve and ratio valve are electrically connected to a temperature control circuit of a temperature controlled 25 circuit boardby detecting an amount of cold water and temperature of hot water, the input amount of gas is adjusted automatically for retaining the temperature in a constant value.

5. The embedded type gas water heater as claimed in claim 1, wherein the rear side of the housing is installed with an gas exhausting 5 chamber and an air inlet chamber wh ich are isolated by an upper spacer and the lower spacer; the exhausting chamber and air inlet chamber are further installed with exhausting holes for exhausting waste gas and air inlet holes for absorbing fresh air, respectively.

6. The embedded type gas water heater as claimed in claim 5, wherein a 10 exhaust mask is connected to a top of the heat exchanger, the exhausting mask is connected to the exhausting chamber for guiding waste gas to be exhausted out, so that inlet fresh air and waste gas flow along different paths which are isolated with one another.

7. The embedded type gas water heater as claimed in claim 1, wherein 15 the gas water heater is located in the combustion chamber; the combustion chamber is adjacent to a wind chamber with a fan motor therein so that the combustion chamber and wind chamber are communicated by an air slit, therefore, air from the wind chamber by the fan motor enters into the combustion chamber along the air slit so 20 as to be mixed with gas for combustion.

8. The embedded type gas water heater as claimed in claim 1, wherein the cool water tube, gas tube and hot water tube of the main body are assembled to a cold water pipe, a gas pipe, and a heat water pipe at the lower side of the wall hole; the operating panel is extended with mask 25 portions toward these pipes, therefore, all th e tube can be shielded for 12 improving an outlook of the whole heat exchanger.

9. The embedded type gas water heater as claimed in claim 1, wherein the hot water tube wound around the heat exchanger is installed with a residue fire safety device so that as the temperature of the residue 5 fire is over a preset temperature, then the gas supply is interrupted automatically.

10. The embedded type gas water heater as claimed in claim 1, wherein a temperature fuse is installed within the main body so that as the temperature of the residue fire is over a preset temperature, then the 10 gas supply is interrupted automatically.

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