PTC instant water heater

Abstract

The utility model relates to water heater technical field discloses a PTC instant water heater, including shell and install in the PTC heating module of shell, be provided with water inlet, water outlet on the shell, and water inlet, water outlet all with PTC heating module intercommunication, and PTC heating module includes heat transfer medium and sets up in the multiple heat absorption pipes of heat transfer medium, PTC pipe, heat absorption pipe includes inner ring heat absorption pipe, peripheral heat absorption pipe. The utility model discloses a PTC pipe around setting inner ring heat absorption pipe makes the heat of PTC pipe mainly be absorbed by inner ring heat absorption pipe, reduces heat dissipation, and then part of the heat dissipation will be absorbed by the peripheral heat absorption pipe of periphery, further effectively utilizes the heat, and only a small part of heat will be lost completely through heat transfer medium finally, to realize the maximization utilization of heat, improve energy conversion efficiency, reduce power loss, green, environmental protection.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, specifically, a PTC instantaneous water heater. Background Technology

[0002] PTC instant water heaters are electric water heaters that use positive temperature coefficient (PTC) material as the heating core. PTC is a special semiconductor material whose resistance increases significantly with increasing temperature, allowing it to quickly heat water and maintain a constant temperature, offering advantages such as energy saving and high efficiency.

[0003] The working principle of a PTC instant water heater is that when an electric current passes through the PTC material, the material heats up rapidly, generating heat and causing the water temperature to rise quickly. This heating method differs from traditional electric water heaters, which require a longer time to heat the water in the tank. PTC instant water heaters are typically designed to be compact, suitable for use in homes, offices, and other locations, offering convenience and speed by providing instant hot water and reducing waiting time.

[0004] In most existing PTC water heaters, during the heating process, the heat from the PTC is transferred to the tap water. However, due to the unreasonable setting of the heat absorption tube, a significant amount of heat is lost from the PTC heating unit. Although the tap water can be heated to the ideal temperature, a lot of electrical energy is wasted. Therefore, it is necessary to design a PTC water heater with less heat loss. Utility Model Content

[0005] The purpose of this invention is to provide a PTC instant water heater that solves the problem of large heat loss and high energy consumption caused by the PTC heating unit in the prior art.

[0006] This utility model is achieved through the following technical solution: A PTC instantaneous water heater includes a shell and a PTC heating module installed in the shell. The shell is provided with an inlet and an outlet, both of which are connected to the PTC heating module. The PTC heating module includes a heat transfer medium and multiple heat absorption tubes and a PTC tube disposed within the heat transfer medium. The heat absorption tubes include inner ring heat absorption tubes and outer ring heat absorption tubes. Multiple inner ring heat absorption tubes are distributed around the PTC tubes, and multiple outer ring heat absorption tubes are distributed around the inner ring heat absorption tubes. The inlet is connected to one end of the multiple heat absorption tubes, and the outlet is connected to the other end of the multiple heat absorption tubes.

[0007] To better realize this utility model, the inner heat-absorbing tubes are further distributed in an equidistant circular array around the PTC tube.

[0008] To better realize this utility model, the PTC tube further includes a protective tube and a PTC heating unit inserted therein, wherein the protective tube is ceramic.

[0009] To better realize this utility model, further: the heat absorption tube is made of copper, and the heat transfer medium is made of aluminum.

[0010] To better realize this utility model, a control module is further installed on the housing, which is used to control the heating power of the PCT tube.

[0011] To better realize this utility model, the control module is further provided with a temperature sensor and a temperature display device.

[0012] To better realize this utility model, the control module is further provided with an overload protector.

[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects: (1) This utility model sets an inner ring heat absorption tube around the PTC tube, so that the heat of the PTC tube is mainly absorbed by the inner ring heat absorption tube, reducing heat loss. Then, some of the lost heat is absorbed by the outer ring heat absorption tube, further making effective use of the heat. In the end, only a very small part of the heat is completely lost through the heat transfer medium. This achieves the maximum utilization of heat, improves energy conversion efficiency, reduces power loss, and is green and environmentally friendly. (2) Compared with ordinary gas water heaters, storage electric water heaters and instant water faucets, this utility model can prepare hot water quickly and in large quantities, continuously without interruption, without waiting, and the temperature can reach about 80°; it is small in size and easy to install, and is not limited by space; there is no need to worry about gas leakage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the PTC heating module.

[0015] Figure 2 This is the circuit diagram for the control module.

[0016] Wherein: 101-protective tube; 102-PTC heating unit; 103-heat absorber tube; 1031-inner ring heat absorber tube; 1032-outer ring heat absorber tube; 104-heat transfer medium. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] Example 1: This embodiment provides a PTC instantaneous water heater, specifically as follows: Figure 1 As shown, the device includes a housing and a PTC heating module installed in the housing. The housing has an inlet and an outlet, both of which are connected to the PTC heating module. The PTC heating module includes a heat transfer medium 104 and multiple heat absorption tubes 103 and a PTC tube disposed within the heat transfer medium 104. Each heat absorption tube 103 includes an inner ring heat absorption tube 1031 and an outer ring heat absorption tube 1032. The multiple inner ring heat absorption tubes 1031 are distributed around the PTC tube, and the multiple outer ring heat absorption tubes 1032 are distributed around the inner ring heat absorption tubes 1031. The inlet is connected to one end of the multiple heat absorption tubes 103, and the outlet is connected to the other end of the multiple heat absorption tubes 103.

[0020] When the user turns on the water heater, the PTC tube in the PTC heating module is energized and quickly converts electrical energy into heat energy. The heat is then transferred to the heat transfer medium 104 surrounding the PTC tube, and then continues to diffuse outwards, reaching the inner heat absorber tube 1031. At this point, the cold water flowing from the inlet to the inner heat absorber tube 1031 begins to absorb heat and become hot. Simultaneously, some of the heat further diffuses outwards through the heat transfer medium 104 and is then transferred to the outer heat absorber tube 1032. At this point, the cold water flowing from the inlet to the outer heat absorption pipe 1032 also begins to absorb heat and become hot. However, the temperature of the cold water in the inner heat absorption pipe 1031 is higher than that of the cold water in the outer heat absorption pipe 1032. The outer heat absorption pipe 1032 is only used to absorb some of the dissipated heat, and the main heat is absorbed by the inner heat absorption pipe 1031. Afterwards, the water in the inner heat absorption pipe 1031 and the outer heat absorption pipe 1032 converges at the outlet. At this point, the two types of water with different temperatures mix and are then discharged.

[0021] By setting an inner ring heat absorber 1031 around the PTC tube, the heat of the PTC tube is mainly absorbed by the inner ring heat absorber 1031, reducing heat loss. Then, some of the lost heat is absorbed by the outer ring heat absorber 1032, further utilizing the heat effectively. In the end, only a very small portion of the heat is completely lost through the heat transfer medium 104. This maximizes the utilization of heat, improves energy conversion efficiency, reduces power loss, and is green and environmentally friendly.

[0022] Compared with ordinary gas water heaters, storage-type electric water heaters, and instant faucets, it produces hot water quickly, in large quantities, continuously and without waiting, reducing water waste caused by waiting. The temperature can reach around 80°C. It is small in size, easy to install, and not limited by space. There are no concerns about gas leaks or exhaust poisoning. It can be installed under cabinets or sinks without affecting the overall aesthetics or taking up too much space. The temperature is displayed digitally, which is intuitive and clear, and the temperature control is convenient and accurate.

[0023] Example 2: This embodiment further extends the above embodiment, specifically as follows: Figure 1 As shown, the inner ring heat absorber tubes 1031 are distributed in an equidistant circular array around the PTC tube. The eight inner ring heat absorber tubes 1031 arranged in a circular array around the PTC tube can form an encircling ring, reducing heat loss and improving energy utilization.

[0024] Furthermore, the PTC tube includes a protective tube 101 and a PTC heating unit 102 inserted therein, wherein the protective tube 101 is ceramic. The heat absorption tube 103 is made of copper, and the heat transfer medium 104 is made of aluminum. The protective tube 101 protects the PTC heating unit 102 from damage or deformation due to overheating; it also effectively isolates current to prevent electrical faults. Both copper and aluminum are metals with good thermal conductivity, but aluminum has a lower density, thus reducing the overall weight. However, copper has better thermal conductivity, allowing the heat absorption tube 103 to quickly transfer heat from the heat transfer medium 104 to the cold water.

[0025] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0026] Example 3: This embodiment further extends the above embodiment, specifically as follows: Figure 2 As shown, a control module is also installed on the housing. This control module is used to control the heating power of the PCT tube. Specifically, the control module includes a temperature controller, which is electrically connected to a fixed relay, a temperature display device, and a temperature sensor. The solid-state relay is electrically connected to the PTC heating module, and the PTC heating module is electrically connected to an overload protector, which includes a temperature protection switch and a fuse; thus forming the entire control circuit.

[0027] When using the device, users simply need to press the temperature controller located on the casing to adjust the desired temperature, and then turn on the main switch. At this time, the PTC heating module starts to work, and cold water flows from the inlet through the PTC heating module, absorbs heat, and then flows out from the outlet for user use. If the temperature sensor detects that the temperature is abnormally high, the temperature protection switch will disconnect to form self-protection. If there is an overload of current, the fuse will blow to form self-protection.

[0028] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A PTC instantaneous water heater, comprising a housing and a PTC heating module installed in the housing, wherein the housing is provided with an inlet and an outlet, both of which are connected to the PTC heating module, characterized in that: The PTC heating module includes a heat transfer medium (104) and multiple heat absorption tubes (103) and a PTC tube disposed within the heat transfer medium (104); the heat absorption tube (103) includes an inner ring heat absorption tube (1031) and an outer ring heat absorption tube (1032), the multiple inner ring heat absorption tubes (1031) are distributed around the PTC tube, and the multiple outer ring heat absorption tubes (1032) are distributed around the inner ring heat absorption tubes (1031); the water inlet is connected to one end of the multiple heat absorption tubes (103), and the water outlet is connected to the other end of the multiple heat absorption tubes (103).

2. The PTC instantaneous water heater according to claim 1, characterized in that: The inner heat absorption tubes (1031) are distributed in an equidistant circular array around the PTC tube.

3. A PTC instantaneous water heater according to claim 1, characterized in that: The PTC tube includes a protective tube (101) and a PTC heating unit (102) inserted therein, wherein the protective tube (101) is ceramic.

4. A PTC instantaneous water heater according to any one of claims 1-3, characterized in that: The housing is also equipped with a control module, which is used to control the heating power of the PCT tube.

5. A PTC instantaneous water heater according to claim 4, characterized in that: The control module is equipped with a temperature sensor and a temperature display device.

6. A PTC instantaneous water heater according to claim 5, characterized in that: The control module is also equipped with an overload protector.

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