CN216080423U - Temperature sensing flange module and water heater - Google Patents

Abstract

The utility model belongs to the technical field of household appliances, and particularly relates to a temperature sensing flange module and a water heater. The utility model aims to solve the problem that the temperature accuracy for collecting hot water in the inner container is low due to the fact that the existing temperature sensor is arranged on the outer wall surface of the inner container. The water heater comprises a liner, a temperature sensing flange module, a flange plate, at least two temperature measuring tubes and a water tank, wherein the end cover of the liner is hermetically connected with the temperature sensing flange module, the flange plate is hermetically connected with the end cover of the liner, the temperature measuring tubes are mounted on the flange plate, the temperature measuring tubes can extend into the liner to detect water temperature, and the two temperature measuring tubes are different in length, so that the water temperature at the height position of the liner is detected, the accuracy and the reliability of water temperature detection are improved, the stability of a product is improved, a user can control the temperature of the water heater better, and the experience of the user is improved. And the temperature measuring pipe is fixed on the flange plate to form a modular structure, so that the temperature measuring pipe is convenient to mount and is beneficial to improving the assembly efficiency.

Description

Temperature sensing flange module and water heater

Technical Field

The utility model belongs to the technical field of household appliances, and particularly relates to a temperature sensing flange module and a water heater.

Background

With the continuous development of new energy markets, the application of air energy household heat pump water heaters is gradually increased. In the actual use process, the temperature of the hot water in the inner container is judged by the user through the temperature displayed by the electric control box. The key point is that whether the installation position of the temperature detection device is reasonable or not influences whether the display temperature of the electric control box accurately reflects the actual water temperature in the inner container or not. Therefore, the mounting structure of the temperature detection device is particularly important.

In the prior art, in order to avoid that the inner container is provided with a plurality of holes to influence the sealing performance of the inner container, and meanwhile, for the convenience of installation, a temperature sensor is usually installed on the outer wall surface of the inner container, and the water temperature in the inner container is transmitted to a temperature sensing element of the temperature sensor through the side wall of the inner container, so that the measurement of the hot water temperature in the inner container is realized.

However, the temperature sensor installed on the outer wall surface of the inner container has low temperature acquisition accuracy and large difference of installation positions, so that the temperature displayed by the electric control box cannot accurately reflect the actual temperature of hot water in the inner container, and the user experience is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, namely the problem that the accuracy of collecting the temperature of hot water in the inner container is low due to the fact that the existing temperature sensor is installed on the outer wall surface of the inner container, the utility model provides a temperature sensing flange module and a water heater.

The temperature sensing flange module includes: the flange plate and the at least two temperature measuring pipes are arranged on the flange plate; the two temperature measuring pipes are fixedly arranged on the flange plate, and the length of the two temperature measuring pipes is different.

In an optional technical scheme of the temperature sensing flange module, the ratio of the length of one of the two temperature measuring tubes to the height of the inner container is 1/4-5/12; the ratio of the length of the other one of the two temperature measuring tubes to the height of the inner container is 7/12-3/4.

In an optional technical scheme of the temperature sensing flange module, the temperature measuring tubes comprise blind tubes and temperature sensors arranged in the blind tubes, open ends of the blind tubes are located on the outer sides of the flange plates, closed ends of the blind tubes of the two temperature measuring tubes are located in the inner container, and the height positions of the closed ends of the blind tubes in the inner container are different.

In an optional technical scheme of the temperature sensing flange module, the flange plate is provided with at least two welding holes; the blind pipe is a metal pipe, the blind pipe penetrates through the welding hole, and the blind pipe is welded with the flange plate.

In an optional technical scheme of the temperature sensing flange module, the temperature sensing flange module further comprises a magnesium anode, and the magnesium anode is detachably mounted on the flange plate.

In an optional technical scheme of the temperature sensing flange module, the length of the magnesium anode is less than 350 mm.

In an optional technical scheme of the temperature sensing flange module, the distance between the magnesium anode and the temperature measuring pipe on the flange plate is 26-36 mm.

In an optional technical scheme of the temperature sensing flange module, the flange plate is provided with a mounting hole; the end part of the magnesium anode is provided with a threaded column, the threaded column penetrates out of the mounting hole to be in threaded connection with a nut, and a gasket is arranged between the nut and the flange plate.

In an optional technical scheme of the temperature sensing flange module, the flange plate is provided with a plurality of arc-shaped convex ribs arranged along the circumferential direction of the flange plate at intervals.

In an optional technical scheme of the temperature sensing flange module, the flange plate is provided with an annular step, and the two temperature measuring pipes are arranged in the annular step.

In an optional technical scheme of the temperature sensing flange module, the flange plate is provided with at least two hanging lugs for hoisting, and the at least two hanging lugs are arranged at intervals along the circumferential direction of the flange plate.

The water heater includes: the flange plate of the temperature sensing flange module is hermetically connected with the end cover of the inner container.

The water heater comprises a liner, a temperature sensing flange module, a flange plate, at least two temperature measuring tubes and a water tank, wherein the end cover of the liner is hermetically connected with the temperature sensing flange module, the flange plate is hermetically connected with the end cover of the liner, the temperature measuring tubes are mounted on the flange plate, the temperature measuring tubes can extend into the liner to detect water temperature, and the two temperature measuring tubes are different in length, so that the water temperature at the height position of the liner is detected, the accuracy and the reliability of water temperature detection are improved, the stability of a product is improved, a user can control the temperature of the water heater better, and the experience of the user is improved. And the temperature measuring pipe is fixed on the flange plate to form a modular structure, so that the temperature measuring pipe is convenient to mount and is beneficial to improving the assembly efficiency.

Drawings

Preferred embodiments of the temperature sensitive flange module and the water heater of the present invention will be described with reference to the accompanying drawings. The attached drawings are as follows:

FIG. 1 is a schematic structural diagram of a water heater provided by an embodiment of the utility model;

FIG. 2 is a top view of a temperature sensitive flange module according to an embodiment of the present invention;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged schematic view of P of FIG. 3;

fig. 5 is a plan view of a temperature sensitive flange module according to an embodiment of the present invention.

In the drawings: 1. a flange plate; 11. a fixing hole; 12. welding the hole; 13. mounting holes; 14. an arc convex rib; 15. an annular step; 16. hanging a lug; 161. hanging holes; 2. a first temperature measuring tube; 21. a first blind pipe; 22. a first temperature sensor; 3. a second temperature measuring tube; 31. a second blind pipe; 32. a second temperature sensor; 4. a magnesium anode; 42. a nut; 43. a gasket; 44. a wire; 5. an inner container.

Detailed Description

First, it should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications. For example, although the temperature sensing flange module of the present invention has been described in connection with a heat pump water heater, this is not intended to be limiting, and other types of water heaters may be configured with the temperature sensing flange module of the present invention, such as a storage-type electric water heater.

Next, it should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "inside", "outside", and the like are based on the direction or positional relationship shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or member must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The heat pump water heater generally comprises an inner container and a heat pump system, wherein the heat pump system generally comprises a compressor, a condenser, a throttling device and an evaporator, the compressor is provided with an exhaust port and a return port, the exhaust port of the compressor is communicated with an inlet of the condenser, the return port of the compressor is communicated with an outlet of the evaporator, and the throttling device is arranged between the outlet of the condenser and the inlet of the evaporator. When the heat pump water heater operates, high-temperature and high-pressure refrigerant discharged from the compressor directly or indirectly exchanges heat with the inside of the inner container in the condenser, enters the throttling device, is subjected to pressure reduction and throttling, exchanges heat with ambient air in the evaporator, and finally returns to the compressor, and the circulation is repeated in such a way, and heat carried by the refrigerant in the condenser is transferred to water in a heat conduction manner to form hot water for a user to use. And a temperature sensor is arranged on the outer wall surface of the inner container for detecting the temperature of the hot water in the inner container, and the water temperature in the inner container is transmitted to a temperature sensing element of the temperature sensor through the side wall of the inner container, so that the measurement of the temperature of the hot water in the inner container is realized. However, the temperature sensor installed on the outer wall surface of the inner container has low temperature acquisition accuracy and large difference of installation positions, so that the temperature displayed by the electric control box cannot accurately reflect the actual temperature of hot water in the inner container, and the user experience is influenced.

In view of the above, the temperature sensor is inserted into the inner container through the blind pipe with one closed end to form the temperature measuring pipe, so that the accuracy of temperature detection is improved; moreover, the temperature measuring tube is arranged on the flange plate, and a hole does not need to be formed in the inner container, so that the influence on the tightness of the inner container is avoided; in addition, the flange plate is provided with the long temperature measuring pipe and the short temperature measuring pipe, so that the water temperatures of different positions of the inner container are detected, and the accuracy and the reliability of temperature detection are further improved.

The preferred embodiments of the temperature sensing flange module and the water heater according to the present invention will be described below.

Referring first to fig. 1 and 2, fig. 1 is a schematic structural diagram of a water heater according to an embodiment of the present invention, and fig. 2 is a top view of a temperature sensing flange module according to an embodiment of the present invention. As shown in fig. 1, the water heater of the present invention includes an inner container 5 and a temperature sensing flange module, wherein a flange plate 1 of the temperature sensing flange module is hermetically connected with an end cover of the inner container.

The end cover of the inner container is provided with connecting holes at intervals along the circumferential direction, and with reference to fig. 2, the flange plate 1 is provided with a plurality of fixing holes 11, the fixing holes 11 are arranged at intervals along the circumferential direction of the flange plate 1, and bolts penetrate through the connecting holes and the fixing holes 11 and then are connected with nuts, so that the fixed connection of the flange plate 1 and the end cover of the inner container 5 is realized; and a sealing structure, such as a sealing ring, a sealing gasket and the like, is arranged between the end cover of the inner container and the flange plate 11, so that the flange plate 1 and the end cover of the inner container 5 are connected in a sealing way. In a specific implementation manner, as shown in fig. 2, five fixing holes 11 are uniformly arranged along the circumferential direction of the flange plate 1 at intervals, and correspondingly, five connecting holes are arranged on the end cover of the inner container 5, so that the stability and the balance of connection are improved. Of course, the number of the fixing holes 11 is not limited thereto, and those skilled in the art can set the number according to the diameter of the flange plate 1, the diameter of the fixing holes 11, and the like.

The flange plate 1 of the embodiment of the utility model is of a disc-shaped structure, can be formed by punching by a grinding tool, is easy to process and has high efficiency.

The temperature sensing flange module comprises the flange plate 1 and at least two temperature measuring pipes; two temperature measurement pipes are all fixed mounting on ring flange 1, and the length of two temperature measurement pipes is different. The arrangement positions of the at least two temperature measuring pipes on the flange plate 1 are not limited, for example, the at least two temperature measuring pipes are arranged at intervals along the circumferential direction of the flange plate 1. For convenience of description, the two temperature measuring tubes are respectively defined as a first temperature measuring tube 2 and a second temperature measuring tube 3.

Take the structure shown in fig. 1 and fig. 3 as an example, wherein fig. 3 is a sectional view taken along a-a in fig. 2. The flange plate 1 is provided with a first temperature measuring pipe 2 and a second temperature measuring pipe 3. Of course, this is not restrictive, for example, three or four temperature measuring tubes may be disposed on the flange plate 1, and those skilled in the art may set the temperature measuring tubes according to actual situations such as installation space, temperature control calculation complexity, and the like.

The first temperature measuring tube 2 and the second temperature measuring tube 3 have different lengths, for example, referring to fig. 1 and 3, the first temperature measuring tube 2 has a length greater than that of the second temperature measuring tube 3, the first temperature measuring tube 2 is longer and can detect the water temperature of the liner 5 far away from one end of the flange plate 1, and the second temperature measuring tube 3 is shorter and can detect the water temperature of the liner 5 near one end of the flange plate 1. So, the temperature of the different positions of inner bag 5 can be detected to first temperature tube 2 and second temperature tube 3, and its sign inner bag 5 that can be more accurate is temperature.

The present invention is not limited to the processing of detecting the temperature of the first temperature measuring tube 2 and the second temperature measuring tube 3. The first temperature measuring tube 2 and the second temperature measuring tube 3 are in communication connection with a main control board of the water heater, and the main control board can directly display two temperatures on the electric control box after receiving the detection temperatures of the first temperature measuring tube 2 and the second temperature measuring tube 3; the main control board can also perform mathematical operation on the two detected temperatures and then display the two detected temperatures on the electronic control box, for example, the main control board calculates the average value of the received detected temperatures of the two temperature measuring tubes and displays the average value on the electronic control box.

Generally, the height H of the inner container 5 is larger, the water inlet of the inner container is arranged at the bottom of the inner container 5, and the water temperature close to the water inlet is lower; the water outlet of the temperature measuring device is arranged at the top of the inner container 5, and the water temperature at the position close to the water outlet is higher. In addition, by arranging at least two temperature measuring tubes, even if one temperature measuring tube is damaged, the other temperature measuring tube can monitor the water temperature, and the reliability of water temperature detection is improved.

The technical personnel in the field can set the lengths of the first temperature measuring tube 2 and the second temperature measuring tube 3 according to the specific value of the height H of the inner container 5, so that the problem that the first temperature measuring tube 2 is too long and inconvenient to install is avoided, the problem that the second temperature measuring tube 3 is too short and cannot accurately reflect the water temperature in the inner container 5 is avoided, and the problem that the first temperature measuring tube 2 and the second temperature measuring tube 3 are too close and cannot reflect the integral water temperature in the inner container 5 is avoided. In view of the above, referring to fig. 1, in a specific implementation manner, a ratio of a length of one of the two temperature measuring tubes to a height H of the inner container 5 is 1/4-5/12; the ratio of the length of the other one of the two temperature measuring tubes to the height H of the inner container 5 is 7/12-3/4.

Referring to fig. 1, an end cap in which a flange 1 is attached to the top end of an inner container 5 will be described as an example. The height of the inner container 5 is H, the length H1 of the first temperature measuring tube 2 is the distance from the top end of the inner container 5 to the bottom end of the first temperature measuring tube 2, and H1 is 7/12H-3/4H, namely, the ratio of the length H1 of the first temperature measuring tube 2 to the height H of the inner container 5 is 7/12-3/4. At this time, the first temperature measuring tube 2 is used to detect the water temperature at the lower position of the inner container 5. The length H2 of the second temperature measuring tube 3 is the distance from the top end of the liner 5 to the bottom end of the second temperature measuring tube 3, and H2 is 1/4H-5/12H, that is, the ratio of the length H2 of the second temperature measuring tube 3 to the height H of the liner 5 is 1/4-5/12. At this time, the second temperature measuring tube 3 is used for detecting the water temperature at the upper position of the inner container 5. The realization detects the temperature of 5 different positions of direction of height of inner bag like this, improves the accuracy that the temperature detected, and then improves user experience.

In a specific embodiment, the ratio of the length H1 of the first temperature measuring tube 2 to the height H of the liner 5 is 2/3, at this time, the first temperature measuring tube 2 detects the water temperature at the 2/3H position of the liner 5; the ratio of the length H2 of the second temperature measuring tube 3 to the height H of the inner container 5 is 1/3, and at the moment, the second temperature measuring tube 3 detects the water temperature at the 1/3H position of the inner container 5. So realize the temperature to 1/3H position department and the 2/3H position department of inner bag 5 and detect, further improve the accuracy that the temperature detected, both can avoid the inconvenient installation of first temperature tube 2 overlength, can also avoid first temperature tube 2 and second temperature tube 3 length to be close and can not reflect the holistic temperature of inner bag 5. Both H, h1 and h2 are referenced from one end of the mounting flange 1.

Of course, the flange 1 is not limited to be mounted on the end cap at the top end of the inner container 5, and for example, the flange 1 may be mounted on the end cap at the bottom end of the inner container 5.

In a specific implementation mode, the temperature measuring tubes comprise blind tubes and temperature sensors arranged in the blind tubes, the open ends of the blind tubes are located on the outer side of the flange plate 1, the closed ends of the blind tubes of the two temperature measuring tubes are located in the liner 5, and the height positions of the blind tubes in the liner 5 are different.

Taking the structure shown in fig. 3 as an example, the first temperature measuring tube 2 includes a first blind tube 21 and a first temperature sensor 22 disposed in the first blind tube 21, the first blind tube 21 is a straight tubular structure extending along the height direction of the liner 5, a cavity for accommodating the first temperature sensor 22 is formed in the first blind tube 21, and one end of the first blind tube 21 is open and the other end is closed. The closed end of the first blind pipe 21 is positioned in the inner container 5, the open end of the first blind pipe 21 is positioned on the outer side of the flange plate 1, and in order to avoid the first temperature sensor 22 from being separated from the cavity, the open end of the first blind pipe 21 is provided with a rubber plug to plug the first blind pipe 21. The cross section of the first blind pipe 21 can be circular, oval, polygonal and the like, and optionally, the cross section of the first blind pipe 21 is circular, so that the processing and the installation are convenient. The first temperature sensor 22 is used for detecting the temperature of water in the inner container 5, and the first temperature sensor 22 may be a thermocouple, a thermistor, a Resistance Temperature Detector (RTD), an IC temperature sensor, and the like, which are not limited herein. Therefore, the first temperature measuring tube 2 extends into the inner container 5 through the first blind tube 21, so that the first temperature sensor 22 can detect the water temperature in the inner container 5, and the detection accuracy is improved; in addition, one end of the first blind pipe 21, which is positioned in the inner container 5, is closed, so that the problems of water resistance, corrosion resistance and the like of the first temperature sensor 22 do not need to be considered, the structure is simple, and the installation is convenient; in addition, the first blind pipe 21 is a straight pipe, so that the installation occupies a small space, and is simple and convenient.

The structure of the second temperature measuring tube 3 may be the same as that of the first temperature measuring tube 2. Referring to fig. 3 in particular, the second temperature measuring tube 3 includes a second blind tube 31 and a second temperature sensor 32 disposed in the second blind tube 31, the second blind tube 31 is a straight tubular structure extending along the height direction of the liner 5, a cavity for accommodating the second temperature sensor 32 is disposed in the second blind tube 31, and one end of the second blind tube 31 is open and the other end is closed. The closed end of the second blind pipe 31 is positioned in the liner 5, and the closed end of the second blind pipe 31 and the closed end of the first blind pipe 21 have different height positions in the liner 5; the open end of the second blind pipe 31 is located outside the flange 1. In order to avoid the second temperature sensor 32 from falling out of the cavity, a rubber plug is arranged at the open end of the second blind pipe 31 to plug the second blind pipe 31. The cross section of the second blind pipe 31 can be circular, oval, polygonal and the like, and optionally, the cross section of the second blind pipe 31 is circular, so that the processing and the installation are convenient. The second temperature sensor 32 is used for detecting the temperature of water in the inner container 5, and the second temperature sensor 32 may be a thermocouple, a thermistor, a Resistance Temperature Detector (RTD), an IC temperature sensor, and the like, which are not limited herein. Therefore, the second temperature measuring tube 3 of the utility model extends into the inner container 5 through the second blind tube 31, so that the second temperature sensor 32 can detect the water temperature in the inner container 5, and the detection accuracy is improved; in addition, one end of the second blind pipe 31, which is positioned in the inner container 5, is closed, so that the problems of water resistance, corrosion resistance and the like of the second temperature sensor 32 do not need to be considered, and the structure is simple and the installation is convenient; in addition, the second blind pipe 31 is a straight pipe, so that the installation occupies a small space, and is simple and convenient.

The embodiment of the utility model does not limit the way of fixing the plurality of temperature measuring tubes on the flange plate 1. Optionally, the mode that a plurality of temperature measurement pipes are fixed on ring flange 1 is the same, so adopt same fixed mode to fix a plurality of temperature measurement pipes on ring flange 1, not only be favorable to improving assembly production efficiency, can also avoid the different ring flange 1 atress that leads to of connected mode uneven and produce the deformation.

The temperature measuring pipe can be fixed in various ways, for example, the end part of the temperature measuring pipe is provided with a thread and is fixed on the flange plate 1 through a nut; for another example, the temperature measuring tube is welded to the flange 1. Specifically, referring to fig. 5, in which fig. 5 is a top view of a temperature sensing flange module according to an embodiment of the present invention. The flange plate 1 is provided with at least two welding holes 12; the blind pipe is a metal pipe, the blind pipe penetrates through the welding hole 12, and the blind pipe is welded with the flange plate 1.

The first blind pipe 21 and the second blind pipe 31 are both metal pipes, and optionally, the first blind pipe 21 and the second blind pipe 31 are both steel pipes, which is beneficial to reducing the cost. The first blind pipe 21 and the second blind pipe 31 are respectively arranged in the two welding holes 12 in a penetrating mode, the first blind pipe 21 and the second blind pipe 31 are respectively welded with the flange plate 1, and the welding mode can be brazing, resistance welding and the like, so that the first temperature measuring pipe 2 and the second temperature measuring pipe 3 are fixedly arranged on the flange plate 1.

In addition, the first temperature measuring tube 2 and the second temperature measuring tube 3 are both undetachably connected with the flange plate 1, so that the first temperature measuring tube 2, the second temperature measuring tube 3 and the flange plate 1 form a modular structure, the installation is convenient, the assembly efficiency is improved, and the production cost is favorably reduced; in addition, the scattered and disordered placement of all parts can be avoided, and the loss of the temperature measuring tube is avoided.

With continued reference to fig. 1 and 2, the temperature-sensitive flange module according to the embodiment of the present invention further includes a magnesium anode 4, and the magnesium anode 4 is detachably mounted on the flange plate 1. The magnesium anode 4 is arranged on the flange plate 1, so that the temperature measuring tube, the magnesium anode 4 and the flange plate 1 are integrated to form a modular structure, assembly is facilitated during production of the water heater, and production efficiency is improved; and, magnesium anode 4 demountable installation is behind ring flange 1, and the after-sale of being convenient for is changed, improves water heater competitiveness. Wherein, the magnesium anode 4 can be an existing structure, and the corrosion of the inner container 5 is reduced by corroding the material of the magnesium anode.

In this embodiment, magnesium anode 4 is integrated on ring flange 1, improves ring flange 1's integrated level, improves the installation effectiveness to magnesium anode 4 carries the top of inner bag 1 through the installation of ring flange 1, and convenient the dismantlement is favorable to reducing the water heater after-sales maintenance cost.

Optionally, the length L of the magnesium anode 4 is less than 350mm, so that the problem that the installation is influenced by the overlong length L of the magnesium anode 4 can be avoided, and the convenience of installation and replacement can be improved.

In a specific installation mode of the magnesium anode 4, the magnesium anode 4 is in threaded connection with the flange plate 1. Specifically, referring to fig. 5, the flange plate 1 is provided with a mounting hole 13; the end part of the magnesium anode 4 is provided with a threaded column, the threaded column penetrates through the mounting hole 13 to be in threaded connection with a nut 42, and a gasket 43 is arranged between the nut 42 and the flange plate 1. And a sealant can be arranged between the threaded column and the mounting hole 13, so that the mounting tightness of the magnesium anode 4 is improved. The washer 43 is beneficial to improving that the washer 43 is also arranged between the nut 42 and the flange plate 1, and the washer 43 can be an elastic rubber washer, so that the connection reliability of the magnesium anode 4 can be improved, and the nut and the flange plate 1 can be insulated. Therefore, the magnesium anode 4 is fixed on the flange plate 1 through the nut 42, the installation is stable and reliable, and the magnesium anode 4 can be replaced by unscrewing the nut 42.

The sealing gasket arranged between the flange plate 1 and the end cover of the inner container 5 is usually an insulating sealing gasket such as a silica gel gasket, so that the magnesium anode 4 is insulated from the inner container 5. In order to form two electrodes for electrochemical corrosion, the magnesium anode 4 can be connected with the inner container 5 through a lead 44, and a connecting terminal at one end of the lead 44 is clamped between the washer 43 and the nut 42, so that the installation is reliable. Therefore, the magnesium anode 4 and the inner container 5 form a conducting loop, the magnesium anode 4 corrodes to provide electrons, and the effect of preventing the inner container 5 from corroding is achieved.

Optionally, two conducting wires 44 are provided, wherein one conducting wire is connected with the inner container 5 to ensure that the magnesium anode 4 is communicated with the inner container 5; the other conducting wire is connected with the flange plate 1, and the resistance element is arranged on the conducting wire, so that the magnesium anode 4 can be prevented from being directly in conductive connection with the flange plate 1, the magnesium anode 4 can be prevented from being consumed due to slow corrosion of metal on the surface of the flange plate 1, and the formed passage can also improve the safety of the water heater.

When the flange plate 1 is simultaneously provided with the magnesium anode 4 and the two temperature measuring tubes, the arrangement positions of the magnesium anode 4 and the two temperature measuring tubes on the flange plate 1 can be various. In a possible embodiment, the distance between the magnesium anode 4 and the center of the temperature measuring tube on the flange plate 1 is 26-36 mm. Referring to fig. 5, the center-to-center distance C between the magnesium anode 4 and the temperature measuring tube is the distance between the center of the mounting hole 13 and the center of the welding hole 12.

In the embodiment, the center distance between the magnesium anode 4 and the temperature measuring tube is 26-36 mm, so that an operation space can be provided for mounting the nut 42 of the magnesium anode 4; in addition, the mounting holes 13 and the two welding holes 12 are arranged on the flange plate 1 in a triangular shape, so that the opening stress of the flange plate 1 is balanced, and the possibility of deformation of the flange plate 1 is reduced.

In order to increase the structural strength of the flange plate 1, a reinforcing structure is arranged on the flange plate 1. Reference is made to fig. 4 and 5, wherein P in fig. 3 is an enlarged schematic view in fig. 4.

Optionally, the flange plate 1 is provided with a plurality of arc-shaped ribs 14 arranged at intervals along the circumferential direction of the flange plate 1. The arc-shaped convex ribs 14 can be arranged between two adjacent fixing holes 11, so that the structural strength of the flange plate 1 is improved, and the flange plate 1 is prevented from deforming to influence the installation.

Optionally, the flange plate 1 is provided with an annular step 15, the two temperature measuring tubes are arranged in the annular step 15, and the annular step 15 can improve the structural strength of the flange plate 1, and is also convenient to be matched with the end cover of the inner container 5, so that the improved convenience is realized.

Because the inner bag 5 size is great, for easy to assemble, be provided with two at least hangers 16 for hoist on the ring flange 1, two at least hangers 16 set up along ring flange 1's circumference interval, are provided with hanging hole 161 on the hangers 16 for with the lifting device cooperation, realize the hoist and mount of inner bag 5 and the inner bag 5 that is equipped with the shell, easy operation is convenient.

In summary, in the water heater of the present invention, the end cover of the inner container 5 is hermetically connected to the temperature sensing flange module, wherein the temperature sensing flange module includes the flange 1 hermetically connected to the end cover of the inner container 5 and at least two temperature measuring tubes installed on the flange 1, the temperature measuring tubes can extend into the inner container 5 to detect the water temperature, and the two temperature measuring tubes have different lengths, so as to achieve the water temperature detection of the height position of the inner container 5, improve the accuracy and reliability of the water temperature detection, facilitate the improvement of the product stability, facilitate the user to better control the temperature of the water heater, and improve the user experience. Moreover, the temperature measuring pipe is fixed on the flange plate 1 to form a modular structure, so that the temperature measuring pipe is convenient to mount and is beneficial to improving the assembly efficiency.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the utility model, and the technical scheme after the changes or substitutions can fall into the protection scope of the utility model.

Claims (9)

1. A temperature sensitive flange module, comprising: the flange plate and the at least two temperature measuring pipes are arranged on the flange plate;

the two temperature measuring pipes are fixedly arranged on the flange plate, and the lengths of the two temperature measuring pipes are different;

the temperature measuring pipe comprises a blind pipe and a temperature sensor arranged in the blind pipe, the open end of the blind pipe is positioned on the outer side of the flange plate, the closed ends of the blind pipes of the two temperature measuring pipes are positioned in the inner container of the water heater, and the height positions of the blind pipes in the inner container are different.

2. The temperature-sensing flange module according to claim 1, wherein a ratio of a length of one of the two temperature measuring pipes to a height of the inner container is 1/4-5/12; the ratio of the length of the other one of the two temperature measuring tubes to the height of the inner container is 7/12-3/4.

3. The temperature-sensitive flange module according to claim 2, wherein the flange plate is provided with at least two welding holes; the blind pipe is a metal pipe, the blind pipe penetrates through the welding hole, and the blind pipe is welded with the flange plate.

4. A temperature-sensitive flange module according to any one of claims 1 to 3, further comprising a magnesium anode removably mounted on said flange plate.

5. The temperature-sensitive flange module according to claim 4, wherein the magnesium anode has a length of less than 350 mm.

6. The temperature-sensing flange module according to claim 4, wherein the distance between the centers of the magnesium anode and the temperature measuring pipe on the flange plate is 26-36 mm.

7. The temperature-sensitive flange module according to claim 4, wherein the flange plate is provided with mounting holes; the end part of the magnesium anode is provided with a threaded column, the threaded column penetrates out of the mounting hole to be in threaded connection with a nut, and a gasket is arranged between the nut and the flange plate.

8. The temperature sensitive flange module according to any one of claims 1 to 3, wherein the flange plate is provided with a plurality of arc-shaped ribs arranged at intervals along a circumferential direction of the flange plate;

the flange plate is provided with an annular step, and the two temperature measuring tubes are arranged in the annular step;

at least two hanging lugs for hoisting are arranged on the flange plate, and at least two hanging lugs are arranged along the circumferential direction of the flange plate at intervals.

9. A water heater, comprising: the temperature sensing flange module according to any one of claims 1 to 8, wherein a flange of the temperature sensing flange module is hermetically connected to an end cap of the inner container.

Images