CN215175958U - High safety tankless water heater - Google Patents

Abstract

The utility model relates to a high-safety instant water heater, comprising a heating pipe and a casing, one end of the heating pipe is a water inlet end, the other end is a water outlet end, and an annular flow channel is formed between the casing and the heating pipe, The water outlet end of the heating tube is communicated with the annular flow channel, and the outer wall of the water inlet end of the heating tube is sealed and connected to the shell. The shell is provided with a water outlet channel that communicates with the annular flow channel. The channel is far away from the water outlet end of the heating tube, a spiral heat-conducting wire is sleeved on the outer wall of the heating tube, and the heat-conducting wire is tightly wound on the outer wall of the heating tube. A first heat-conducting copper sheet is embedded in the first temperature-measuring hole, the first heat-conducting copper sheet is sealed and embedded in the first temperature-measuring hole, the outer bottom surface of the first heat-conducting copper sheet is in contact with the heat-conducting wire, and the shell A first temperature controller is externally connected, and the temperature measuring terminal of the first temperature controller is in close contact with the first heat-conducting copper sheet.

Description

High-safety instant water heater

Technical Field

The utility model relates to a high security instant heating type water heater.

Background

The instant water heater is widely applied to the intelligent toilet industry, and various instant water heaters have been developed to meet the use requirements of safety, reliability, high efficiency and stability. The instant heating type water heater on the existing market has two kinds of dry burning prevention structures, one: the fuse wire is pressed on the heater shell, and the temperature of the heating pipe can be transmitted to the fuse wire only through water or air between the heating pipe and the shell, the heater shell and the glass fiber tube wrapped on the fuse wire, so that the structure has the advantages of more passing media, unstable temperature transmission, low temperature transmission speed and easy external interference; the other one is as follows: the manual reset switch is directly arranged on the heater shell and is connected with the heater shell through the copper sheet, the response of the mode is sensitive compared with the first mode, but when the heater does not contain water, namely, the heater is dried, the heat transfer of the heater needs to be transferred through the air between the heating pipe and the shell, and therefore, the slow and unstable heat transfer still exists. Both of these techniques do not completely solve the problem of dry burning.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the high-safety instant water heater can quickly detect the dry-burning state of the instant water heater, and then cut off the power supply to avoid the instant water heater from being burnt.

In order to solve the technical problem, the utility model discloses a technical scheme is: the high-safety instant water heater comprises a heating pipe and a shell sleeved outside the heating pipe, wherein two ends of the heating pipe are open, one end of the heating pipe is a water inlet end, the other end of the heating pipe is a water outlet end, an annular flow passage is formed between the shell and the heating pipe, the water outlet end of the heating pipe is communicated with the annular flow passage, the outer wall of the water inlet end of the heating pipe is hermetically connected with the shell, a water outlet passage communicated with the annular flow passage is arranged on the shell, the water outlet passage extends to the outer wall of the shell to form a water outlet, the water outlet passage is far away from the water outlet end of the heating pipe, a spiral heat conducting wire is sleeved on the outer wall of the heating pipe and tightly wound on the outer wall of the heating pipe, a first temperature measuring hole opposite to the outer circumferential wall of the heating pipe is arranged on the shell, a first heat conducting copper sheet is embedded in the first temperature measuring hole and is hermetically embedded in the first temperature measuring hole, and the outer bottom surface of the first heat conducting copper sheet is abutted against the heat conducting wire, the shell is externally connected with a first temperature controller, and a temperature measuring terminal of the first temperature controller is tightly attached to the first heat-conducting copper sheet.

As a preferred scheme, the first heat conduction copper sheet is in a cylindrical shape with a closed bottom and an open upper end, the outer bottom surface of the first heat conduction copper sheet is in a concave arc shape and matched with the outer wall of the heat conduction wire, the inner bottom surface of the first heat conduction copper sheet is a plane, and the temperature measurement terminal of the first temperature controller is directly attached to the inner bottom surface of the first heat conduction copper sheet.

As a preferable scheme, an extension part is arranged at the edge of the first heat-conducting copper sheet, the extension part extends out of the shell and is attached to the outer wall of the shell, the anode of the heating pipe is connected with a plurality of thyristors, the thyristors are attached to the extension part of the first heat-conducting copper sheet, and the heating pipe is connected with a power supply through the plurality of thyristors.

As a preferable scheme, the shell is further provided with a second temperature measuring hole, the second temperature measuring hole is located on one side of the water outlet and communicated with the water outlet channel, a second heat-conducting copper sheet is arranged in the second temperature measuring hole, the second heat-conducting copper sheet is sealed and blocked on the second temperature measuring hole, the shell is connected with a second temperature controller, and a temperature measuring terminal of the second temperature controller is tightly attached to the second heat-conducting copper sheet.

Preferably, the first temperature controller is a manual reset temperature controller.

Preferably, the second temperature controller is an automatic reset temperature controller.

The utility model has the advantages that: the utility model discloses a spiral heat conduction wire twines on the heating tube outer wall, set up first temperature measurement hole simultaneously on the casing, set up in first temperature measurement hole with the first heat conduction copper sheet of heat conduction wire butt, install the first temperature controller with first heat conduction copper sheet butt outside the casing, thereby make the temperature of heating pipe pass through the heat conduction wire, first heat conduction copper sheet direct conduction gives first temperature controller, owing to eliminated air heat conduction, consequently, the heat conduction speed of heating pipe to first temperature controller has been improved greatly, make first temperature controller can detect instant heating type water heater's dry combustion method state fast, and then the cut off power supply, avoid instant heating type water heater to burn out.

Drawings

The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is an electrical control schematic diagram of the present invention;

in fig. 1 and 2: 1. the device comprises a heating pipe, 101, a water inlet end, 102, a water outlet end, 2, a shell, 3, an annular flow channel, 4, a water outlet channel, 5, a water outlet, 6, a heat conducting wire, 7, a first temperature measuring hole, 8, a first heat conducting copper sheet, 801, an extension part, 9, a first temperature controller, 10, a silicon controlled rectifier, 11, a second temperature measuring hole, 12, a second heat conducting copper sheet, 13 and a second temperature controller.

Detailed Description

The following describes in detail a specific embodiment of the present invention with reference to the drawings.

The high-safety instant heating type water heater shown in fig. 1 comprises a heating pipe 1 and a shell 2 sleeved outside the heating pipe 1, wherein two ends of the heating pipe 1 are open, one end is a water inlet end 101, the other end is a water outlet end 102, an annular flow passage 3 is formed between the shell 2 and the heating pipe 1, the water outlet end 102 of the heating pipe 1 is communicated with the annular flow passage 3, the outer wall of the water inlet end 101 of the heating pipe 1 is hermetically connected with the shell 2, a water outlet passage 4 communicated with the annular flow passage 3 is arranged on the shell 2, the water outlet passage 4 extends to the outer wall of the shell 2 to form a water outlet 5, the water outlet passage 4 is far away from the water outlet end 102 of the heating pipe 1, a spiral heat conducting wire 6 is sleeved on the outer wall of the heating pipe 1, the heat conducting wire 6 is tightly wound on the outer wall of the heating pipe 1, a first temperature measuring hole 7 opposite to the outer circumferential wall of the heating pipe 1 is formed on the shell 2, a first heat conducting copper sheet 8 is embedded in the first temperature measuring hole 7, the first heat conduction copper sheet 8 is embedded in the first temperature measurement hole 7 in a sealing mode, the outer bottom surface of the first heat conduction copper sheet 8 is abutted to the heat conduction wire 6, the first temperature controller 9 is connected to the outer portion of the shell 2, and a temperature measurement terminal of the first temperature controller 9 is tightly attached to the first heat conduction copper sheet 8.

The heat conducting wire 6 in this embodiment is preferably a metal coil spring, and may also be wound with a thick red copper wire, and when selecting a material, a material having a thermal conductivity higher than that of air is preferred, and the metal is a preferred material.

In this embodiment, the first heat conducting copper sheet 8 is a cylinder with a closed bottom and an open upper end, the outer bottom surface of the first heat conducting copper sheet 8 is in a concave arc shape and is matched with the outer wall of the heat conducting wire 6 to increase the contact area between the first heat conducting copper sheet 8 and the heat conducting wire 6 and improve the heat conduction efficiency, the inner bottom surface of the first heat conducting copper sheet 8 is a plane, the temperature measuring terminal of the first temperature controller 9 is directly attached to the inner bottom surface of the first heat conducting copper sheet 8, and a manual reset type temperature controller is preferably used as the first temperature controller 9 in this embodiment.

The edge of the first heat conduction copper sheet 8 is provided with an extension part 801, the extension part 801 extends to the outside of the shell 2 and is attached to the outer wall of the shell 2, the anode of the heating pipe 1 is connected with a plurality of controllable silicon 10, the controllable silicon 10 is attached to the extension part 801 of the first heat conduction copper sheet 8, the heating pipe 1 is connected with a power supply through the plurality of controllable silicon 10, the controllable silicon 10 is used for adjusting the circuit of the heating pipe 1, thereby adjusting the heating efficiency and controlling the water temperature, the controllable silicon 10 has large heat productivity, the controllable silicon 10 is attached to the first heat conduction copper sheet 8, so that the good heat dissipation effect can be achieved, when water exists in the annular flow channel 3, the lower water temperature can absorb the heat emitted by the controllable silicon 10, thereby the working temperature of the controllable silicon 10 is reduced, the service life of the controllable silicon 10 and the working stability of the water heater are improved, meanwhile, the heat of the controllable silicon 10 is absorbed by the water, and the electric energy required by the heating pipe 1 for heating the water is saved, the energy consumption of the instant heating type water heater is reduced, and when no water exists in the annular flow channel 3 (namely when dry burning occurs), the heat of the controllable silicon 10 cannot be transferred quickly, so that the temperature rise of the first heat conduction copper sheet 8 is accelerated, and the speed of the first temperature controller 9 for detecting the dry burning state is promoted.

The shell 2 is further provided with a second temperature measuring hole 11, the second temperature measuring hole 11 is located on one side of the water outlet 5 and communicated with the water outlet channel 4, a second heat conduction copper sheet 12 is arranged in the second temperature measuring hole 11, the second heat conduction copper sheet 12 is sealed and blocked on the second temperature measuring hole 11, the shell 2 is connected with a second temperature controller 13, a temperature measuring terminal of the second temperature controller 13 is tightly attached to the second heat conduction copper sheet 12, and the second temperature controller 13 is used for detecting the water temperature of the water outlet 5 to avoid damage to a human body due to overheating. The second temperature controller 13 in the present embodiment is an automatic reset type temperature controller.

The utility model discloses the theory of operation is: as shown in fig. 1 and fig. 2, cold water enters from a water inlet end 101 of the heating pipe 1, flows into the annular flow passage 3 from a water outlet end 102, flows along the annular flow passage 3 to a water outlet passage 4, and finally flows out of the water outlet 5 through the water outlet passage 4, in the process, a power supply supplies power to the heating pipe 1 through the silicon controlled rectifier 10 to continuously heat the water inside and outside the heating pipe 1, when the heating pipe 1 is heated, the heat on the heating pipe 1 is directly transferred to the heat conducting wire 6, the heat conducting wire 6 directly transfers the heat to the first heat conducting copper sheet 8, the first heat conducting copper sheet 8 directly transfers the heat to the first temperature controller 9, when water flows in the annular flow passage 3, the heat emitted from the heating pipe 1 is rapidly taken away by the water, so that the temperature detected by the first temperature controller 9 is low, once the heating pipe 1 is dry-burned, that is, when no water exists in the annular flow passage 3, the heat of heating pipe 1 can't be arranged outward, can only outwards transmit through heat conduction silk 6, and heat conduction silk 6 intensifies rapidly for the first heat conduction copper sheet 8 of butt with it intensifies rapidly, and the dry combustion method state of heating pipe 1 just can in time be detected with the first temperature controller 9 of first heat conduction copper sheet 8 butt, and disconnection when first temperature controller 9 detected the temperature and reached preset temperature cuts off the power of heating pipe 1.

Similarly, when the second temperature controller 13 detects that the water temperature at the water outlet 5 is too high and reaches the preset temperature, the connection is disconnected, and the power supply of the heating pipe 1 is cut off.

The above embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments in use, and are not intended to limit the invention; it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.

Claims (6)

1. High-safety instant water heater, including a heating pipe (1) and a shell (2) sleeved outside the heating pipe (1), the heating pipe (1) is open at both ends, and one end is the water inlet ( 101), the other end is the water outlet (102), an annular flow channel (3) is formed between the shell (2) and the heating tube (1), and the water outlet (102) of the heating tube (1) is connected to the annular flow channel (3). ) is connected, the outer wall of the water inlet end (101) of the heating pipe (1) is sealedly connected with the shell (2), and the shell (2) is provided with a water outlet channel (4) that communicates with the annular flow channel (3). (4) extending to the outer wall of the casing (2) to form a water outlet (5), and the water outlet channel (4) is far away from the water outlet end (102) of the heating pipe (1), characterized in that the outer wall of the heating pipe (1) is sleeved on the outer wall There is a spiral heat-conducting wire (6), the heat-conducting wire (6) is tightly wound on the outer wall of the heating pipe (1). A first temperature measuring hole (7), a first heat conducting copper sheet (8) is embedded in the first temperature measuring hole (7), and the first heat conducting copper sheet (8) is sealed and embedded in the first temperature measuring hole (7). ), the outer bottom surface of the first heat-conducting copper sheet (8) is in contact with the heat-conducting wire (6), and a first temperature controller (9) is connected to the outside of the casing (2). The first temperature controller (9) The temperature measuring terminal is in close contact with the first thermal conductive copper sheet (8). 2. The high-safety instant water heater according to claim 1, wherein the first thermally conductive copper sheet (8) is a cylindrical shape with a closed bottom and an open upper end, and the first thermally conductive copper sheet (8). ) is in a concave arc shape, matching the outer wall of the heat conducting wire (6), the inner bottom surface of the first heat conducting copper sheet (8) is flat, and the temperature measuring terminal of the first temperature controller (9) is directly close to the first heat conducting wire (8). on the inner bottom surface of the thermally conductive copper sheet (8). 3. The high-safety instant water heater according to claim 1, wherein an extension (801) is provided on the edge of the first heat-conducting copper sheet (8), and the extension (801) extends To the outside of the casing (2) and attached to the outer wall of the casing (2), the positive electrode of the heating tube (1) is connected with a number of thyristors (10), and the thyristor (10) is attached to the first heat-conducting copper On the extension part (801) of the sheet (8), the heating tube (1) is connected to the power supply through a number of thyristors (10). 4. The high-safety instant water heater according to claim 1, characterized in that a second temperature measuring hole (11) is further opened on the casing (2), the second temperature measuring hole (11) is located on one side of the water outlet (5) and communicated with the water outlet channel (4). The second temperature measuring hole (11) is provided with a second heat-conducting copper sheet (12), and the second heat-conducting copper sheet (12) is hermetically sealed. The second temperature measuring hole (11) is plugged, the casing (2) is connected with a second temperature controller (13), and the temperature measuring terminal of the second temperature controller (13) and the second heat conducting copper sheet (12) cling to. 5 . The high-safety instant water heater according to claim 1 , wherein the first temperature controller ( 9 ) is a manual reset type temperature controller. 6 . 6 . The high-safety instant water heater according to claim 4 , wherein the second temperature controller ( 13 ) is an automatic reset type temperature controller. 7 .

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