Heater of water dispenser

Abstract

The utility model belongs to the field of electric heating, and particularly relates to a water dispenser heater. The water dispenser heater comprises a tubular carrier, a thick film heating assembly arranged on the surface of the carrier, an upper end cover and a lower end cover which are arranged at the two ends of the carrier respectively, and an outer shell which is arranged on the carrier in a sleeving mode and fixedly connected with the upper end cover and the lower end cover, and is characterized in that at least one installation hole is formed in the outer shell, and a temperature controller is arranged in the installation hole; the end face of the temperature controller is tightly attached to the thick film heating assembly, a connecting through hole is formed in the outer shell, and the temperature controller, the PTC heating piece and the thick film heating assembly are connected in series. The utility model designs the water dispenser heater capable of preventing dry burning, and the heater is compact in structure and low in manufacturing cost.

Description

Technical Field

[0001] The utility model belongs to the field of electric heating, and particularly relates to a water dispenser heater. Background Art

[0002] With the improvement of people's living standards and the increasing demand for healthy drinking water, water dispensers, as a convenient drinking device, have been widely used in families, offices and public places. There are some obvious deficiencies in the traditional design: 1. Uneven heating; 2. Insufficient dry-burning protection design. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the utility model designs a water dispenser heater that can prevent dry burning, and the heater has a compact structure and low manufacturing cost.

[0004] The technical solution of the utility model is as follows:

[0005] The water dispenser heater includes a tubular carrier, a thick film heating component is provided on the surface of the carrier, an upper end cover and a lower end cover are respectively provided at both ends of the carrier, and an outer shell body that is sleeved on the carrier and fixedly connected to the upper end cover and the lower end cover. The characteristics are: at least one mounting hole is provided on the outer shell body, a thermostat is provided in the mounting hole, the end face of the thermostat is in close contact with the thick film heating component, a connection through hole is provided on the outer shell body, and a PTC heating sheet is further included. The thermostat, the PTC heating sheet and the thick film heating component are connected in series.

[0006] Furthermore, the thick film heating component includes a first heating thick film and a second heating thick film arranged at intervals in an S shape. The first heating thick film and the second heating thick film are arranged at intervals along the length direction of the carrier, and the first heating thick film and the second heating thick film share a common positive electrode.

[0007] Furthermore, the upper end cover includes an upper end cover plate. A lower sleeve is provided at the center of the lower end face of the upper end cover plate. A coaxial second lower sleeve is provided on the periphery of the lower sleeve. A sealing rubber ring is provided between the lower sleeve and the second lower sleeve. The sealing rubber ring is provided with an embedding groove. The end of the carrier is inserted and fitted in the embedding groove. An upper sleeve is provided at the center of the upper end face of the upper end cover. The upper sleeve is communicated with the lower sleeve. A water outlet pipe is provided on the side wall of the upper sleeve. Connection holes are provided at the four corners of the upper end cover plate.

[0008] Furthermore, a groove is provided on the inner part of the second lower sleeve, and a convex part that cooperates with the groove is provided on the corresponding sealing rubber ring.

[0009] Furthermore, four reinforcing rib plates are evenly arranged on the outer peripheral surface of the second lower sleeve.

[0010] Furthermore, an NTC sensor is provided at the end of the upper sleeve.

[0011] Furthermore, the lower end cover includes a lower end cover plate. At the center of the lower end face of the lower end cover plate, there is a first lower sleeve for lower end sealing. The water inlet pipe is arranged on the side of the first lower sleeve. On the upper end face of the lower end cover plate, there is a first upper sleeve, and the first upper sleeve is communicated with the first lower sleeve. It further includes a second upper sleeve coaxially arranged with the first upper sleeve. A sealing rubber ring is arranged between the first upper sleeve and the second upper sleeve. The sealing rubber ring is provided with an embedding groove, and the end of the carrier is inserted and fitted in the embedding groove.

[0012] A flow guiding rod is further arranged inside the carrier. Both ends of the flow guiding rod are conical. The surface of the flow guiding rod is provided with spiral blades. A plurality of support blocks are respectively arranged at both ends of the flow guiding rod, and the support blocks are connected to the upper end cover and the lower end cover.

[0013] To sum up, the utility model has the following beneficial effects:

[0014] The utility model improves the water dispenser heater. Specifically: the PTC heating sheet and the temperature controller are serially arranged with the thick film heating component. When the temperature rises abnormally, the resistance of the PTC heating sheet rises sharply, resulting in a decrease in the power of the thick film heating component, a decrease in the heat generation amount, and even an inability to generate heat, thereby protecting the water dispenser heater from dry burning and film bursting. The temperature controller plays a secondary protection role. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional schematic diagram of the utility model;

[0016] Figure 2 is a half-sectional three-dimensional schematic diagram of the utility model;

[0017] Figure 3 is a three-dimensional schematic diagram of the upper end cover and the carrier of the utility model;

[0018] Figure 4 is a three-dimensional schematic diagram of the lower end cover of the utility model;

[0019] In the figure, 1 is the carrier,

[0020] 2 is the thick film heating component, 20 is the first heating thick film, 21 is the second heating thick film,

[0021] 3 is the upper end cover, 30 is the upper end cover plate, 31 is the lower sleeve, 32 is the second lower sleeve, 320 is the groove, 33 is the sealing rubber ring, 330 is the embedding groove, 331 is the protruding part, 34 is the upper sleeve, 340 is the water outlet pipe, 35 is the connection hole, 321 is the reinforcing rib plate, 341 is the NTC sensor,

[0022] 4 is the lower end cover, 40 is the lower end cover plate, 41 is the first lower sleeve, 410 is the water inlet pipe, 42 is the first upper sleeve, 43 is the second upper sleeve, 44 is the sealing rubber ring, 440 is the embedding groove, 45 is the connecting hole,

[0023] 5 is the outer housing, 50 is the mounting hole, 51 is the thermostat, 52 is the connecting through hole, 53 is the PTC heating element,

[0024] 6 is the flow guiding rod, 60 is the spiral blade, 61 is the support block. Detailed implementation manners

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and be able to implement it, but the exemplified embodiments are not intended to limit the present invention.

[0026] It should be noted that when an element is referred to as "disposed on" or "fixed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is referred to as "fixed on" another element or "fixedly connected" to another element, the connection between them can be a detachable fixing method or a non-detachable fixing method. When an element is considered to be "connected" or "rotationally connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right", "upper", "lower" and similar expressions are only for the purpose of illustration and do not represent the only implementation manner.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention herein are only for the purpose of describing specific implementation manners and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0028] In the present invention, the terms such as "first", "second", "third", etc. do not represent specific quantities and orders, but are only used for name distinction.

[0029] See Figure 1 and Figure 3As shown, a water dispenser heater includes a tubular carrier 1, which is a stainless steel pipe fitting. A thick film heating component 2 is provided on the surface of the carrier 1. Upper end caps 3 and lower end caps 4 are respectively provided at both ends of the carrier 1, and a housing 5 is sleeved on the carrier and fixedly connected to the upper and lower end caps. The provided housing is sleeved on the surface of the carrier to protect the thick film heating component on the surface of the carrier, and it also facilitates the installation of other components. At least one mounting hole 50 is provided on the housing 5. In this embodiment, two mounting holes are provided on the housing. A thermostat 51 is provided in the mounting hole. Specifically, in this embodiment, there are two thermostats, and the two thermostats are connected in series. The end face of the thermostat 51 is in close contact with the thick film heating component. A connection through hole 52 is provided on the housing 5, and a PTC heating sheet 53 is further included. Specifically, the PTC heating sheet is provided on the surface of the carrier corresponding to the connection through hole. The connection through hole facilitates the connection of the cable to the PTC heating sheet. The thermostat, the PTC heating sheet, and the thick film heating component are connected in series.

[0030] The utility model improves the water dispenser heater. Specifically: the PTC heating sheet and the thermostat are connected in series with the thick film heating component. When the temperature rises abnormally, the resistance of the PTC heating sheet increases sharply, resulting in a decrease in the power of the thick film heating component, a decrease in the heat generation amount, and even the inability to generate heat, thereby protecting the water dispenser heater from dry burning and film bursting. The thermostat plays a secondary protection role.

[0031] Further, as shown in Figure 3 As shown, the thick film heating component 2 includes a first heating thick film 20 and a second heating thick film 21 arranged at intervals in an S shape. The first heating thick film 20 and the second heating thick film 21 are arranged at intervals along the length direction of the carrier, and the first heating thick film and the second heating thick film share a positive electrode. The thick film heating component of the utility model is set in two gears. When using the first gear, only the first heating thick film is turned on. When using the second gear, the first heating thick film and the second heating thick film are connected simultaneously. Moreover, the first heating thick film and the second heating thick film of the utility model are arranged along the length direction of the carrier. When different gears are selected, the designer can completely heat the flowing process of water in the carrier along the length direction, overcoming the problems of short heating distance and poor heating effect existing in the prior art when using the winding method.

[0032] As shown in Figure 2As shown in the figure, the upper end cover 3 includes an upper end cover plate 30. A lower sleeve 31 is provided at the center of the lower end face of the upper end cover plate 30. A coaxial second lower sleeve 32 is provided around the lower sleeve 31. A sealing rubber ring 33 is provided between the lower sleeve 31 and the second lower sleeve 32. The sealing rubber ring 33 is provided with an embedding groove 330. The end of the carrier 1 is inserted and fitted into the embedding groove 330. A upper sleeve 34 is provided at the center of the upper end face of the upper end cover 3. The upper sleeve 34 is communicated with the lower sleeve 31. A water outlet pipe 340 is provided on the side wall of the upper sleeve 34. Connecting holes 35 are provided at the four corners of the upper end cover plate. Here, the structure of the upper end cover is defined, which facilitates the assembly between the upper end cover and the carrier and also ensures the sealing effect between the two.

[0033] A groove 320 is provided inside the second lower sleeve 32. A convex portion 331 matched with the groove is provided on the corresponding sealing rubber ring 33. The provided convex portion is matched with the groove, and the two play a limiting role after being matched to prevent the sealing ring from rotating between the lower sleeve and the second lower sleeve.

[0034] Four reinforcing rib plates 321 are evenly distributed on the outer peripheral surface of the second lower sleeve 32. The setting of the reinforcing rib plates improves the structural strength of the upper end cover. At the same time, during the assembly with the outer shell, it also provides a positioning to prevent assembly errors by the staff.

[0035] An NTC sensor 341 is provided at the end of the upper sleeve 34. The provided NTC sensor is used to detect the liquid temperature to further ensure that the device will not be in a dry burning state.

[0036] See Figure 2 and Figure 4 As shown in the figure, the lower end cover 4 includes a lower end cover plate 40. A first lower sleeve 41 for lower end sealing is provided at the center of the lower end face of the lower end cover plate 40. A water inlet pipe 410 is provided on the side of the first lower sleeve 41. A first upper sleeve 42 is provided on the upper end face of the lower end cover plate 40, and the first upper sleeve 42 is communicated with the first lower sleeve 41. It also includes a second upper sleeve 43 coaxially arranged with the first upper sleeve 42. A sealing rubber ring 44 is provided between the first upper sleeve 42 and the second upper sleeve 43. The sealing rubber ring 44 is provided with an embedding groove 440. The end of the carrier 1 is inserted and fitted into the embedding groove. Connecting holes 45 are provided at the four corners of the lower end cover plate.

[0037] Inside the carrier 1, there is also a flow guiding rod 6. The two ends of the flow guiding rod 6 are conical. With this conical structure design, the water flow is diverted to reduce the impact force of the water flow entering the carrier on the flow guiding rod. The surface of the flow guiding rod 6 is provided with spiral blades 60. The spiral blades are arranged to form a spiral flow guiding area between the flow guiding rod and the inner wall of the carrier. The water flow spirally advances along the flow guiding area inside the carrier, increasing the travel distance of the liquid inside the carrier and enhancing the contact time between the liquid and the thick film heating component, thus ensuring the heating effect of the heating pipe of the water dispenser. Multiple support blocks are respectively arranged at both ends of the flow guiding rod. Specifically, in this embodiment, there are four support blocks. The support blocks are connected to the upper end cover and the lower end cover, and the four support blocks are evenly distributed at 90 degrees, ensuring the reliability of the fixation of the flow guiding rod inside the carrier.

[0038] In summary, the present utility model has the following beneficial effects:

[0039] The present utility model improves the water dispenser heater. Specifically: the PTC heating sheet and the temperature controller are connected in series with the thick film heating component. When the temperature abnormally rises, the resistance of the PTC heating sheet rapidly increases, resulting in a decrease in the power of the thick film heating component, a smaller amount of heat generation, and even an inability to generate heat, thereby protecting the water dispenser heater from dry burning and membrane explosion. The temperature controller plays a secondary protection role.

[0040] Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Claims

1. A water dispenser heater, comprising a tubular carrier, a thick film heating assembly being provided on the surface of the carrier, an upper end cap and a lower end cap being provided at both ends of the carrier, and an outer shell being sleeved on the carrier and fixedly connected to the upper end cap and the lower end cap, characterized in that: The outer shell is provided with at least one mounting hole, in which a thermostat is arranged, and the end face of the thermostat is in close contact with the thick film heating component. The outer shell is provided with a connecting through hole and also includes a PTC heating sheet. The thermostat, the PTC heating sheet and the thick film heating component are connected in series.

2. The water dispenser heater according to claim 1, characterized in that: The thick film heating assembly comprises a first heating thick film and a second heating thick film arranged in an S-shaped interval. The first heating thick film and the second heating thick film are arranged in an S-shaped interval along the length direction of the carrier, and the first heating thick film and the second heating thick film share a common positive electrode.

3. The water dispenser heater according to claim 1, characterized in that: The upper end cover includes an upper end cover plate, a lower sleeve is provided at the center of the lower end surface of the upper end cover plate, a coaxial second lower sleeve is provided on the periphery of the lower sleeve, a sealing rubber ring is provided between the lower sleeve and the second lower sleeve, the sealing rubber ring is provided with an embedding groove, the end of the carrier is inserted and fitted in the embedding groove, an upper sleeve is provided at the center of the upper end surface of the upper end cover, the upper sleeve is connected with the lower sleeve, a water outlet pipe is provided on the side wall of the upper sleeve, and connecting holes are provided at the four corners of the upper end cover plate.

4. The water dispenser heater according to claim 3, characterized in that: The second lower sleeve is provided with a groove inside, and the corresponding sealing rubber ring is provided with a protrusion matched with the groove.

5. The water dispenser heater according to claim 3 or 4, characterized in that: Four reinforcing rib plates are evenly distributed on the outer circumferential surface of the second lower casing.

6. The water dispenser heater according to claim 3, characterized in that: The end of the upper sleeve is provided with an NTC sensor.

7. The water dispenser heater according to claim 1, characterized in that: The lower end cover includes a lower end cover plate, a first lower sleeve with a lower end seal is provided at the center of the lower end surface of the lower end cover plate, a water inlet pipe is provided on the side of the first lower sleeve, a first upper sleeve is provided on the upper end surface of the lower end cover plate, and the first upper sleeve is connected to the first lower sleeve, and also includes a second upper sleeve coaxially arranged with the first upper sleeve, a sealing rubber ring is provided between the first upper sleeve and the second upper sleeve, the sealing rubber ring is provided with an embedding groove, and the end of the carrier is inserted and fitted in the embedding groove.

8. The water dispenser heater according to claim 1, characterized in that: A guide rod is also provided inside the carrier, and the two ends of the guide rod are tapered. The surface of the guide rod is provided with spiral blades. The two ends of the guide rod are respectively provided with a plurality of support blocks, and the support blocks are connected to the upper end cover and the lower end cover.

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