TWI710738B - Interval heating device for electric water heater - Google Patents

Abstract

This creation at least includes: a water storage tank with a closed water storage area, a normal temperature water inlet pipe connected to the water storage area of the water storage tank, a closed heating area and set up at the water storage area of the water storage tank The heating cylinder, the inner water inlet pipe connecting the water storage area to the heating area, a single-seat heating element group synchronously placed in the heating area and the water storage area, and a connecting the heating area to the outside The hot water outlet pipe; wherein: the single-seat heating element group, which includes at least a set of bottom plates, an outer heating tube assembled on the bottom plate and contained in the water storage area, and assembled on the bottom plate In addition, the water storage area is provided with an external inlet connected to the outside, and the heating area is provided with a built-in inlet connected to the outside, and makes the The external inlet is adjacent to one side of the internal inlet, so that the inner and outer heating tubes of a single-seat heating element group can be disposed from the inner and outer inlets into the heating area and the water storage area respectively .

Description

Interval heating device for electric water heater

The invention relates to an electric water heater; in particular, it relates to an electric water heater interval heating device that can utilize a single heating element group to achieve the dual functions of synchronous preheating and instantaneous heating.

According to the general electric water heater, please refer to Figure 1. It consists of a water storage tank 1 with a closed water storage area 10, a normal temperature water inlet pipe 12 connected to the water storage area 10 of the water storage tank 1, and a continuous The water storage area 10 of the water storage cylinder 1 to the hot water pipe 13 outside the water storage cylinder 1, and a set of heating pipes 15 arranged at the water storage area 10 of the water storage cylinder 1, wherein: the hot water pipe 13 is mainly divided into It is a water inlet 131 for the hot water formed by heating the water storage area 10 to flow out, a connecting portion 132 extending downward from the water inlet 131, and a connecting portion 132 connected to the storage from the other end of the connecting portion 132 The water outlet 133 outside the water area 10, and the horizontal position of the water inlet 131 must be higher than the horizontal position of the water outlet 133, and the horizontal position of the water inlet 131 must be higher than the highest horizontal position of the heating pipe 15 In this way, when the heating tube 15 starts to heat, the normal temperature water source that has been distributed on the peripheral side of the heating tube 15 will directly absorb the heat generated by the heating tube 15, and the water source temperature will be greatly increased, and Heat convection is generated, and the heating tube 15 will stop operating until the normal temperature water source stored in the water storage area 10 reaches a predetermined temperature due to heating.

Although the above creation can achieve its creative purpose, it will have the following shortcomings in the process of operation and use: due to the conventional technology in the heating process, it is necessary to heat all the normal temperature water sources in the entire water storage area to a predetermined high temperature. The operation of the heating tube will be stopped. In this way, when the temperature during the waiting period (ie waiting) drops to the lowest predetermined temperature, the heating tube must be activated to start heating, and the temperature of the entire water storage area must be heated to The heating is stopped only after a predetermined high temperature, so that the capacity of each reheating is too large, and the time required for reheating is too long, which in turn causes the consumption of electric power as a major problem.

As mentioned above, since each reheating refers to the entire water storage area, especially when consumers are heating while using it, the heat generated by the heating tube and expanded heat convection will often cause local After the high hot water source is neutralized and cooled by the normal temperature water source, and the heating temperature in the water storage area does not reach the predetermined temperature, it will be directly discharged from the hot water pipe for consumers to use, so that the consumers will use the temperature Low water sources are another major problem.

Therefore, how to develop a technology that can effectively shorten the reheating time, reduce the loss of intangible heat energy, and improve the heating efficiency and environmental protection and energy saving is a technical issue that the industry needs to solve first.

The main content of the heating device of the electric water heater of the present invention is to provide a water storage area that can be used to coat the outer periphery of the heating cylinder, and a connecting area is provided between the heating area and the outside of the heating cylinder. The built-in entrance and the external entrance are connected between the water storage area and the outside of the water storage cylinder, and the external entrance is adjacent On one side of the built-in entrance, so that the bottom plate of the single-seat heating element group can be assembled and fixed at the base plate, so that the inner and outer heating tubes of the single-seat heating element group can be installed from the inner and outer respectively The entrance is moved synchronously and inserted into the heating area and the water storage area; in this way, it not only enables the inner and outer heating tubes of the single-seat heating element group to be placed in two different areas at the same time (ie heating area and Water storage area), so that the highest temperature water source (that is, water source higher than normal temperature) already located in the water storage area flows directly through the water intake and then into the heating area, as the inner heating pipe Reheating is used to greatly increase the initial water temperature that flows into the heating zone for reheating, effectively shortening the required reheating time and providing faster heating efficiency, and can greatly reduce The loss of intangible heat energy effectively enhances the use of its thermal efficiency, making it environmentally friendly and energy-saving. At the same time, it also enables the water storage area to function as a preheating water source and the heating area to function as an instant hot water source. Furthermore, achieving the dual effects of simultaneous preheating and instantaneous heating and the best balance is an advanced proposition.

In order to achieve the purpose of the above creation, the main technical means of the present invention include at least: a water storage tank with a closed water storage area, a normal temperature water inlet pipe connected to the water storage area of the water storage tank, and a closed heating The heating cylinder installed in the water storage area of the water storage tank, the inner water inlet pipe connecting the water storage area to the heating area, and a single seat simultaneously placed in the heating area and the water storage area Heating element group, and a hot water outlet pipe connecting the heating area to the outside; wherein: the water storage cylinder is provided with a closed and independent water storage area, and the water storage area can be wrapped around the outer periphery of the heating cylinder And make the water storage area available for the storage of the water source from the normal temperature water inlet pipe; and the appropriate locations of the water storage area are equipped with normal temperature water inlet pipes, exhaust devices, and outflow pipes. The normal temperature water inlet pipe, the exhaust device, and the outlet pipe are respectively used as the communication between the water storage area and the outside of the water storage cylinder; the heating cylinder is accommodated in the water storage area, and the The heating cylinder includes at least a side panel surrounded by sides to form a closed shape, and a cover plate welded and fixed to the top edge of the side panel; the bottom edge of the side panel of the heating tube is assembled with a base plate, and The side wall and the cover plate or the side wall and the cover plate and the substrate can be surrounded to form a closed and independent heating zone, and the substrate is provided with an adjacent built-in entrance penetrating the thickness of the substrate And an external inlet, so that the built-in inlet is used as the communication between the heating zone and the outside of the heating cylinder and the external inlet is used as the communication between the water storage area and the outside of the water storage cylinder, and the external inlet It is adjacent to the side of the built-in entrance, and enables the bottom plate of the single-seat heating element group to be assembled and fixed at the base plate, so that the inner and outer heating tubes of the single-seat heating element group can be separated from the inner and outer heating pipes. The external entrance is moved synchronously and inserted into the heating area and the water storage area; and the length of the outer heating tube is longer than the length of the inner heating tube; and the heating cylinder is provided with a connecting An inner water inlet pipe between the heating area and the water storage area and a hot water outlet pipe connecting the heating area to the outer side of the water storage cylinder; the inner water inlet pipe includes at least one for the inflow of the water source near the high temperature layer of the water storage area The water intake and a water intake connected to the heating zone of the heating cylinder. The water intake must be set at a level area of at least one-half of the total height of the water storage area, so as to be distributed and stored in The high-temperature water source in the water storage area can directly flow from the water intake into the heating area and then be used for reheating by the inner heating tube, and used as a high-temperature water source for rapid heating again and a higher hot water source The single-seat heating element group includes at least a set of bottom plates, an outer heating tube that is assembled at the bottom plate and accommodated in the water storage area, and is assembled at the bottom plate and accommodated in the plus The inner heating pipe in the hot zone; the hot water outlet pipe is used to connect the heating area to the outside of the water storage cylinder, and the hot water outlet pipe is provided with at least one drain inlet for the heating area to reheat to form hot water outflow, and make The horizontal position of the drain inlet is lower than the horizontal position of the water intake of the inner water inlet pipe, and the horizontal position of the drain inlet is higher than the horizontal position of the water inlet of the inner water inlet pipe; one end of the exhaust device is connected The water storage area and its other end are connected to the outside of the water storage cylinder, and an on-off valve is assembled; and the exhaust device includes at least one vent pipe connected to the water storage area and a set of The switch valve at the other end of the vent pipe, so that the vent pipe that is already in the water storage area is provided with an air inlet, and the horizontal position of the air inlet is higher than the horizontal position of the water intake of the inner water inlet pipe , To control the height of the water in the water storage area.

1‧‧‧Water tank

10‧‧‧Water storage area

15‧‧‧Heat resistance element

2‧‧‧Normal temperature inlet pipe

3‧‧‧Heating cylinder

30‧‧‧Heating area

31‧‧‧Side panel

32‧‧‧Cover plate

33‧‧‧Substrate

331‧‧‧Built-in entrance

332‧‧‧External entrance

34‧‧‧Base frame seat

35‧‧‧Locking unit

4‧‧‧Inlet water pipe

40‧‧‧Water intake

41‧‧‧Water inlet

5‧‧‧Single-seat heating element group

51‧‧‧Bottom plate

52‧‧‧Inner heating tube

53‧‧‧External heating tube

6‧‧‧Hot water outlet pipe

60‧‧‧Drainage inlet

8‧‧‧Exhaust device

80‧‧‧Vent pipe

801‧‧‧Air inlet

85‧‧‧On-off valve

9‧‧‧External water pipe

Figure 1 is a schematic partial cross-sectional view of a conventional storage type electric water heater.

Figure 2 is a sectional view of the combined electric water heater section heating device of the present invention.

Figure 3 is a partial combined cross-section and plan exploded schematic view of Figure 2.

Figure 4 is a bottom view of Figure 2.

Figure 5 is a bottom view of Figure 4 with the water storage cylinder removed.

Figure 6 is a top view of Figure 5.

Figure 7 is a bottom view of the combination of Figure 5 after pulling out the single-seat heating element group.

Figure 8 is a bottom view of the single-seat heating element group taken out from Figure 5.

Figure 9 is a combined cross-sectional view of the second embodiment of the present invention.

Figure 10 is a combined cross-sectional view of the third embodiment of the present invention.

The present invention relates to an electric water heater interval heating device. Please refer to Figures 2 to 8, which at least includes: a water storage tank 1 with a closed and independent water storage area 10, and a water storage tank 1 connected to the water storage tank 1. The normal temperature water inlet pipe at the water storage area 10 2, a closed heating area 30 and a heating cylinder 3 arranged in the water storage area 10 of the water storage cylinder 1, connecting the water storage area 10 to the heating area 30 The inner water inlet pipe 4, a single-seat heating element group 5 simultaneously placed in the heating area 30 and the water storage area 10, and a hot water outlet pipe 6 connecting the heating area 30 to the outside of the water storage cylinder 1 ; Among them: the water storage cylinder 1, which is provided with a closed and independent water storage area 10, and the water storage area 10 can be wrapped around the heating cylinder 3, and the water storage area 10 is provided It is used for storage of the water inflow from the normal temperature water inlet pipe 2; in addition, the water storage area 10 is equipped with a normal temperature water inlet pipe 2, an exhaust device 8, and an outflow water pipe 9 at appropriate positions. The water pipe 2, the exhaust device 8, and the external water pipe 9 are respectively used as the communication between the water storage area 10 and the outer side of the water storage cylinder 1, so that the normal temperature water source can pass through the normal temperature water inlet pipe 2. The gas that has flowed into the water storage area 10 or has been located in the water storage area 10 is discharged to the outside of the water storage cylinder 1 through the exhaust device 8 (as a height for controlling the water storage capacity), or has been located in the storage area. The stored water source in the water area 10 is discharged to the outside of the water storage cylinder 1 through the drain pipe 9; and the above-mentioned water storage cylinder 1 wall surface or between the two walls is provided with a heat resistance element 15 and the heat resistance element 15 It can be made of foam, heat-insulating cotton, or enamel; one end of the normal temperature water inlet pipe 2 is connected to the water source and the other end is connected The water storage area 10 is used as a water supply source to flow into and stored in the water storage area 10. The above-mentioned normal temperature water inlet pipe 2 is preferably installed on the wall surface of the water storage cylinder 1; the heating cylinder 3 , It is made of metal thermal conductive material, and the heating cylinder 3 is housed in the water storage area 10 (that is, the water storage area 10 is wrapped around the heating cylinder 3); and the heating cylinder 3 It includes at least a side wall 31 surrounded by the sides to form a closed shape, and a cover plate 32 welded and fixed at the top edge of the side wall 31; further, the heating cylinder 3 is assembled at the bottom edge of the side wall 31 A base plate 33 is provided, and the side wall 31 and the cover plate 32 or between the side wall plate 31 and the cover plate 32 and the base plate 33 can be surrounded to form a closed and independent heating zone 30, and is placed on the base plate There are adjacent internal inlets 331 and external inlets 332 penetrating through the thickness of the base plate 33 at 33. When the base plate 33 is completely covered and arranged at the open end of the water storage cylinder 1, the internal inlets 331 can be used as The heating area 30 is used to communicate with the outside of the heating cylinder 3 and the external inlet 332 is used to communicate with the water storage area 10 to the outside of the water storage cylinder 1, so that the bottom plate 51 of the single-seat heating element group 5 can The assembly is fixed at the base plate 33, so that the inner and outer heating pipes 52, 53 can move synchronously from the inner and outer inlets 331, 332 into the heating zone 30 and the water storage zone 10 ( Or if the base plate 33 is not completely covered and arranged at the open end of the water storage cylinder 1, an external inlet 332 connected to the water storage area 10 is formed, and the base plate 33 is provided with a connection to the The built-in inlet 331 at the heating zone 30, so that the bottom plate 51 of the single-seat heating element group 5 can be assembled and fixed at the base plate 33 and the water tank 1, so that the inner and outer heating tubes 52, 53 can be separately Move synchronously from the internal and external entrances 331 and 332 into the heating zone 30 and the water storage zone 1 0); In addition, the heating cylinder 3 is provided with an inner water inlet pipe 4 connecting the heating area 30 to the water storage area 10 and a connecting heating area 30 to the outside of the water storage cylinder 1 at appropriate places. The hot water outlet pipe 6 at the location, so that the high-temperature water source already located at the water storage area 10 can flow directly into the heating area 30 from the water intake 40 of the inner water inlet pipe 4 and then serve as the inner heating pipe 52 For reheating; in addition, the base plate 33 is provided with an exhaust device 8 connecting the outside of the water storage cylinder 1 to the water storage area 10; the inner water inlet pipe 4 is assembled at the heating cylinder 3, and It can be used to connect the water storage area 10 and the heating area 30, and the water intake 40 of the inner water inlet pipe 4 must be set at least at a horizontal area of more than half of the total height of the water storage area 10; In addition, the inner water inlet pipe 4 at least includes a water intake 40 for the inflow of the water source near the high temperature layer of the water storage area 10, and a water intake 41 connected to the heating area 30 of the heating cylinder 3, and the water intake 40 must be installed at a level area that is at least one-half of the total height of the water storage area 10, so that the high-temperature water source distributed and stored in the water storage area 10 can flow directly from the water intake 40 to In the heating zone 30, the inner heating tube 52 is used for reheating, and is used as a high-temperature water source for rapid heating again and providing a higher hot water source; and the above-mentioned inner water inlet tube 4 is a through the heating The wall surface of the cylinder 3 and a part of it will be located in the hollow tube in the heating zone 30, or one end of the water inlet 41 can be connected to the heating zone 30 of the heating cylinder 3 so that the inner water inlet pipe 4 is located in the water storage zone 10. The hollow tube inside is the best; the single-seat heating element group 5 can be an electric heating tube, etc., which at least includes a set of bottom plates 51, which are assembled at the bottom plate 51 and accommodated in the storage The outer heating tube 53 in the water zone 10 and the base plate 51 are assembled and housed in the heating zone The inner heating tube 52 within 30; when the bottom plate 51 of the single-seat heating element group 5 is set and fixed at the base plate 33, the inner and outer heating tubes 52, 53 can be separated from the inner and outer inlets 331, 332 synchronously moved and inserted into the heating area 30 and the water storage area 10; and the number of the above-mentioned outer heating tube 53 and the inner heating tube 52 is at least one (including one) to be arranged side by side. Is the best, and the length of the outer heating tube 53 is longer than the length of the inner heating tube 52; the hot water outlet tube 6 is used to connect the heating zone 30 to the outside of the water storage cylinder 1, and the The hot water outlet pipe 6 is provided with at least one drainage inlet 60 for the heating zone 30 to reheat to form hot water outflow, and the horizontal position of the drainage inlet 60 is lower than the horizontal position of the water intake 40 of the inner water inlet pipe 4, And make the horizontal position of the drain inlet 60 higher than the horizontal position of the water inlet 41 of the inner water inlet pipe 4; and the above-mentioned hot water outlet pipe 6 is a wall that penetrates the base plate 33 of the heating cylinder 3 and extends toward the outside A hollow tube or a hollow tube whose one end of the drainage inlet 60 can be connected to the heating zone 30 of the heating cylinder 3 and so that the hot water outlet pipe 6 is located in the water storage zone 10 is the best; the exhaust device 8, One end is connected to the water storage area 10 and the other end is connected to the outside of the water storage cylinder 1 to be assembled with an on-off valve 85; and the exhaust device 8 includes at least one connected to the water storage area 10 The vent pipe 80 and a set of on-off valves 85 are arranged at the other end of the vent pipe 80, so that the vent pipe 80 already in the water storage area 10 is provided with an air inlet 801, and the air inlet 801 The horizontal position is higher than the horizontal position of the water intake 40 of the inner water inlet pipe 4, which is used to control the water storage height already in the water storage area 10; in addition, the vent pipe 80 is installed and fixed to the The water storage cylinder 1 is fixed to the heating cylinder at the wall surface or through the assembly 3 on the wall surface of the base plate 33; in addition, the switch valve 85 is used to control whether the vent pipe 80 of the exhaust device 8 can connect the water storage area 10 to the outside of the water tank 1; the drain pipe 9, which It serves as a connection between the water storage area 10 and the outside of the water storage tank 1, so that the water source stored in the water storage area 10 can be discharged to the outside of the water storage tank 1 through the drain pipe 9 for maintenance or It is used for drainage during cleaning; when installing for the first time, please refer to Fig. 2. It is necessary to completely cover the base plate 33 and set it at the open end of the water tank 1, so that the base plate 33 The built-in inlet 331 and the external inlet 332 can be used to connect the heating area 30 to the outside of the heating cylinder 3 and to connect the water storage area 10 to the outside of the water storage cylinder 1, respectively. The inner and outer heating tubes 52, 53 located at the single-seat heating element group 5 are aligned at the inner and outer inlets 331, 332, respectively, and then the bottom plate 51 set at the single-seat heating element group 5 The seal is fixed at the base plate 33, so that the inner and outer heating tubes 52, 53 can be moved synchronously from the inner and outer inlets 331, 332, respectively, and inserted into the heating zone 30 and the water storage zone 10 , And the preliminary assembly is completed (that is, the single-seat heating element group 5 is installed and fixed at the base plate 33); at this time, the leakage water pipe 9 and the hot water outlet pipe 6 are closed (that is, they are not connected to the outside) Then, turn the on-off valve 85 so that the two ends of the vent pipe 80 of the exhaust device 8 can be connected to the water storage area 10 and the outside of the water storage cylinder 1 (that is, open and connected). Turn on the normal temperature water source so that the normal temperature water source can flow into the water storage area 10 through the normal temperature water inlet pipe 2 until the water level of the water storage area 10 is higher than the top surface of the heating cylinder 3 and the water intake of the inner water inlet pipe 4 After 40 places, and often The warm water source directly flows into the heating zone 30 from the water intake 40, and will also cover the entire heating zone 30 (that is, located on the peripheral side of the inner heating tube 52) and behind the hot water outlet pipe 6, before the normal temperature The water source continues to be filled in the water storage area 10 until the water surface in the water storage area 10 is covered and discharged from the air inlet 801 of the vent pipe 80; at this time, the on-off valve 85 can be turned in the reverse direction. The two ends of the vent pipe 80 of the exhaust device 8 will not connect the water storage area 10 to the outside of the water storage cylinder 1 (that is, in a closed state), and the initial installation operation is completed. In this way, The depth position of the water inlet 801 of the vent pipe 80 into the water storage area 10 can be used to determine the amount of water level that the water storage area 10 can actually store; when the single-seat heating element group 5 is activated to generate heat energy , The inner heating pipe 52 already located in the heating zone 30 and the outer heating pipe 53 already located in the water storage area 10 will be activated simultaneously to generate heat; at this time, due to the volume of the water storage area 10 The volume of the heating zone 30 is several times as much. Therefore, when the heat energy generated by the inner heating tube 52 is directly absorbed by the normal temperature water source already located in the heating zone 30 (because the volume of the heating zone 30 is small) , And enough to enable the normal temperature water source in the heating zone 30 to be quickly turned into a high hot water source. At the same time, the heat generated by the outer heating tube 53 will be directly absorbed by the normal temperature water source already located in the water storage zone 10. Become a warm water source (that is, slowly increase the water temperature due to the large volume of the water storage area 10) and generate thermal convection to flow upward and distribute at the highest temperature water layer of the water source of the water storage area 10 to form the storage The normal temperature water source in the water area 10 becomes a preheated warm water source until the temperature of the water source in the water storage area 10 reaches the preset maximum temperature value, the operation of the single-seat heating element group 5 can be cut off; When consumers use it, the high-temperature hot water source already located in the heating zone 30 will flow in from the drain inlet 60 of the hot water outlet pipe 6 and be discharged to the outside. At the same time, the hot water source already located in the water storage zone 10 will be discharged. The warm water source of the highest temperature water layer inside can directly flow into the heating zone 30 from the water intake 40 of the inner water inlet pipe 4, and can increase the initial temperature value flowing into the heating zone 30, and can follow This is used as the initial temperature value for the reheating of the inner heating tube 52 to greatly increase the temperature of the high hot water source in the heating zone 30. In this way, the inner and outer parts of the single-seat heating element group 5 can be used. The heating pipes 52 and 53 can be separately placed in two different areas (namely, the heating zone 30 and the water storage area 10) at the same time, so that the water source of the highest temperature in the water storage area 10 (that is, the water source higher than the normal temperature) It flows directly through the water intake 40 and then flows into the heating zone 30, and is used for reheating the inner heating tube 52 to greatly increase the initial water temperature that flows into the heating zone 30 for reheating. Temperature, and effectively shorten the required reheating time and provide faster heating efficiency to greatly reduce the loss of intangible heat and effectively improve the use of its thermal efficiency, making it environmentally friendly and energy-saving, and at the same time , It can also make the water storage area 10 have the function of preheating water source and the heating area 30 have the function of instantaneous hot water source, so as to achieve the dual function of synchronous preheating and instantaneous heating and the best balance.

Please refer to Figure 9, which is a combined cross-sectional schematic diagram of the second embodiment of the present invention, which is mainly: the original heating cylinder 3 is surrounded by the sides to form a closed side enclosure 31 and a welding The cover plate 32 fixed at the top edge of the side panel 31 is changed to that the heating cylinder 3 includes at least a side panel 31 surrounded by sides to form a closed shape, and a set of the side panel 31 Cover plate 32 at the top edge opening, And the locking unit 35 that can fix the cover plate 32 to the side panel 31; As for the above-mentioned water storage cylinder 1, the normal temperature water inlet pipe 2, the heating cylinder 3, the inner water inlet pipe 4, the single seat The structure and relative arrangement relationship of the heating element group 5, the hot water outlet pipe 6, the exhaust device 8, and the leaking water pipe 9 have been described in detail in the above content, so they will not be repeated here.

Please refer to Figure 10, which is a combined cross-sectional schematic view of the third embodiment of the present invention, which is mainly: the original heating cylinder 3 is surrounded by the side to form a closed side enclosure 31 and a welding The cover plate 32 fixed at the top edge of the side panel 31 is changed to that the heating cylinder 3 at least includes a side panel 31 surrounded by sides to form a closed shape, and a welding fixed on the top of the side panel 31 The cover plate 32 at the edge, the base frame seat 34 set at the bottom edge of the side panel 31, and the locking unit 35 that can fix the side panel 31 to the base frame seat 34; The water storage cylinder 1, the normal temperature water inlet pipe 2, the heating cylinder 3, the internal water inlet pipe 4, the single-seat heating element group 5, the hot water outlet pipe 6, the exhaust device 8, and the external drain pipe 9 And the relative setting relationship has been described in detail in the above content, so I will not repeat it here.

The above are only the preferred embodiments of the present invention and are not used to limit the scope of implementation of the present invention; therefore, all equivalent changes or modifications based on the features and spirit described in the scope of the application of the present invention shall include Within the scope of the patent application of the present invention.

1‧‧‧Water tank

10‧‧‧Water storage area

15‧‧‧Heat resistance element

2‧‧‧Normal temperature inlet pipe

3‧‧‧Heating cylinder

30‧‧‧Heating area

31‧‧‧Side panel

32‧‧‧Cover plate

33‧‧‧Substrate

331‧‧‧Built-in entrance

332‧‧‧External entrance

4‧‧‧Inlet water pipe

40‧‧‧Water intake

41‧‧‧Water inlet

5‧‧‧Single-seat heating element group

51‧‧‧Bottom plate

52‧‧‧Inner heating tube

53‧‧‧External heating tube

6‧‧‧Hot water outlet pipe

60‧‧‧Drainage inlet

8‧‧‧Exhaust device

80‧‧‧Vent pipe

801‧‧‧Air inlet

85‧‧‧On-off valve

9‧‧‧External water pipe

Claims (10)

An electric water heater interval heating device, which at least includes: a water storage tank with a closed water storage area, a normal temperature water inlet pipe connected to the water storage area of the water storage tank, a closed heating area and set in the storage tank The heating cylinder at the water storage area of the water cylinder, the inner water inlet pipe connecting the water storage area to the heating area, a single-seat heating element group simultaneously placed in the heating area and the water storage area, and a connection The hot water outlet pipe from the heating area to the outside; wherein: the single-seat heating element group includes at least a set of bottom plates, an outer heating pipe assembled on the bottom plate and accommodated in the water storage area, And an inner heating tube assembled at the bottom plate and accommodated in the heating zone; in addition, the water storage area is provided with an external inlet connected to the outside, and the heating zone is provided with a connected to the outside Built-in entrance, and make the external entrance adjacent to one side of the built-in entrance, so that the built-in entrance and the external entrance can be separated into different areas by the heating cylinder being arranged at the water storage area So that the inner and outer heating pipes of a single-seat heating element group can be disposed into the heating area and the water storage area from the inner and outer inlets respectively, so that the outer heating pipe will already be located in the The normal temperature water source in the water storage area is pre-heated and the inner heating pipe reheats the hot water source that has flowed into the heating area, so that the same single-seat heating element group can be placed in two at the same time. The dual functions of simultaneous preheating and instantaneous heating in different areas. As described in the first item of the scope of the patent application, the heating device of the electric water heater, wherein the heating cylinder includes at least a side panel surrounded by sides to form a closed shape, and a cover plate welded and fixed at the top edge of the side panel . As described in the first item of the scope of patent application, the heating device of the electric water heater, wherein the heating cylinder includes at least a side panel surrounded by sides to form a closed shape, and a cover plate set at the top edge opening of the side panel And a locking unit capable of fixing the cover plate assembly on the side panel. As described in the first item of the scope of patent application, the heating device of the electric water heater, wherein the heating cylinder includes at least a side panel surrounded by sides to form a closed shape, a cover plate welded and fixed to the top edge of the side panel, A base frame seat set at the bottom edge of the side panel and a locking unit capable of combining and fixing the side panel at the base frame seat. For the electric water heater interval heating device described in item 1, 2, 3 or 4 of the scope of patent application, wherein a base plate is assembled at the bottom edge of the heating cylinder, and the base plate completely covers the opening arranged in the water storage cylinder At the end, and on the base plate, a built-in entrance connected to the heating area and an external entrance connected to the water storage area are respectively provided, and the external entrance is adjacent to one side of the built-in entrance , So that the bottom plate of the single-seat heating element group can be assembled and fixed at the base plate, so that the inner and outer heating pipes can move synchronously from the inner and outer entrances to the heating area and the water storage Area. As described in item 5 of the scope of patent application, the electric water heater interval heating device, wherein the inner water inlet pipe includes at least a water intake for inflow of the water level near the high temperature layer of the water storage area, and a heater connected to the heating cylinder The water inlet must be located at a level above one-half of the total height of the water storage area; and the hot water outlet pipe is provided with a hot water outlet for reheating the heating area to form hot water outflow Used drainage inlet, and make the horizontal position of the drainage inlet It is lower than the horizontal position of the water inlet of the inner water inlet pipe, and the horizontal position of the drainage inlet is higher than the horizontal position of the water inlet of the inner water inlet pipe. For example, the electric water heater interval heating device described in item 6 of the scope of patent application, wherein the base plate is provided with an exhaust device connecting the outside of the water storage cylinder to the water storage area, and the exhaust device includes at least one connecting to The vent pipe used in the water storage area and a set of on-off valves arranged at the vent pipe, so that the vent pipe already in the water storage area is provided with an air inlet, and the horizontal position of the air inlet is set It is higher than the horizontal position of the water intake of the inner water inlet pipe; in addition, the length of the outer heating pipe is longer than the length of the inner heating pipe. For example, the electric water heater interval heating device described in item 1, 2, 3, or 4 of the scope of patent application, wherein a base plate is assembled at the bottom edge of the heating cylinder, and the base plate does not completely cover the assembly arranged in the water storage cylinder At the open end, an external inlet connected to the water storage area is formed, and a built-in inlet connected to the heating area is provided on the base plate, and the external inlet is adjacent to the built-in inlet One side, so that the bottom plate of the single-seat heating element group can be assembled and fixed at the base plate and the water storage cylinder, so that the inner and outer heating tubes can move synchronously from the inner and outer entrances and insert them into the The heating zone and the water storage zone. As described in item 8 of the scope of patent application, the electric water heater section heating device, wherein the inner water inlet pipe includes at least a water intake for inflow of the water level near the high temperature layer of the water storage area, and a heater connected to the heating cylinder The water inlet must be located at a level above one-half of the total height of the water storage area; and the hot water outlet pipe is provided with a hot water outlet for reheating the heating area to form hot water outflow Used drainage inlet, and make the horizontal position of the drainage inlet It is lower than the horizontal position of the water inlet of the inner water inlet pipe, and the horizontal position of the drainage inlet is higher than the horizontal position of the water inlet of the inner water inlet pipe. For example, the electric water heater interval heating device described in item 9 of the scope of patent application, wherein the base plate is provided with an exhaust device connected to the outside of the water storage cylinder to the water storage area, and the exhaust device includes at least one connected to The vent pipe used in the water storage area and a set of on-off valves arranged at the vent pipe, so that the vent pipe already in the water storage area is provided with an air inlet, and the horizontal position of the air inlet is set It is higher than the horizontal position of the water intake of the inner water inlet pipe; in addition, the length of the outer heating pipe is longer than the length of the inner heating pipe.

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