Instant electric water heater with anti-scalding function

Abstract

An instant electric water heater with an anti-scalding function comprises an instant heating body, a water inlet pipe fitting, a bypass valve, a bypass water inlet pipe, a bypass water outlet pipe and a water outlet pipe fitting, the bypass valve comprises a valve body, a valve cover and a valve element, the valve element is arranged in a valve element cavity, a gap between the valve element and the valve element cavity forms a water channel, and the valve cover is buckled with an upper opening of the valve element cavity. The water inlet straight pipe is communicated with a cold water inlet pipe of the instant heating body, and the bypass branch pipe is communicated with the water inlet connector through a bypass water inlet pipe. When the water outlet pipe fitting is in a closed state, the valve element and the valve element cavity bottom plate are attached to seal the water inlet end, and when the water outlet pipe fitting is in an open state, the valve element and the valve deck are attached to seal the water outlet end. When the water outlet pipe is closed, the valve element is located on the bottom plate of the valve element cavity and sealed. When the water outlet pipe is opened, the valve element slowly ascends under the action of cold water pressure, so that the cold water amount of the bypass water outlet pipe is guaranteed, and scalding prevention is achieved.

Description

Technical Field

[0001] This utility model relates to an instant electric water heater. Background Technology

[0002] The existing technology, Chinese patent 202011313311.5, describes an instant electric water heater, including a hot water chamber for containing hot water. The hot water chamber is connected to an inlet pipe for cold water and an outlet pipe for hot water. A bypass pipe connects the inlet and outlet pipes, and the bypass pipe is equipped with a valve unit for automatically switching the water flow in the bypass pipe when the outlet pipe is switched between open and closed states. This invention, by connecting a bypass pipe between the inlet and outlet pipes, allows the cold water in the bypass pipe to mix with the hot water in the outlet pipe before being discharged when the user turns on the hot water again, effectively solving the temperature rise problem and preventing the temperature rise during shutdown from affecting the user experience. However, a problem exists: when the outlet pipe is closed, the valve core seals the inlet end at the top of the valve body; when the outlet pipe is opened, the valve core moves downwards quickly, resulting in insufficient cold water and poor anti-scalding effect. Utility Model Content

[0003] The purpose of this utility model is to provide an instant electric water heater with anti-scalding function, which is unaffected by water pressure changes, has a sufficient supply of cold water, and has a good anti-scalding effect.

[0004] This utility model is implemented as follows: an instant electric water heater with anti-scalding function, characterized in that it includes an instant heating element, an inlet pipe fitting, a bypass valve, a bypass inlet pipe, a bypass outlet pipe, and an outlet pipe fitting.

[0005] Water inlet fittings include straight inlet pipes and bypass branch pipes;

[0006] The bypass valve includes a valve body, a valve cover, and a valve core. The valve body has a valve core cavity with an upper opening, an inlet port on the base plate, and an outlet port on the valve cover. The valve core is located inside the valve core cavity, and the gap between them forms a water channel. The valve cover is engaged with the upper opening of the valve core cavity.

[0007] The inlet straight pipe is connected to the cold water inlet pipe of the instant heating element, and the bypass branch pipe is connected to the inlet interface through the bypass inlet pipe; the outlet fitting is connected to the hot water outlet pipe of the instant heating element, and the bypass outlet pipe is connected to the outlet interface and the outlet fitting. When the outlet fitting is closed, the valve core and the valve core cavity bottom plate are fitted together to seal the inlet end. When the outlet fitting is open, the valve core and the valve cover are fitted together to seal the outlet end.

[0008] The instantaneous electric water heater with anti-scalding function is characterized in that: the water outlet fitting includes an angled pipe section and a hot water branch pipe section.

[0009] The hot water branch pipe is connected to the horizontal pipe of the angled pipe section, and the vertical pipe of the angled pipe section is connected to the shower head; the bypass outlet pipe is connected to the suspended end of the horizontal pipe.

[0010] The instant electric water heater with anti-scalding function is characterized in that the valve core is cylindrical.

[0011] The instant electric water heater with anti-scalding function is characterized in that the valve core is multi-faceted and the ridges and valve core cavity are in sliding fit.

[0012] The instantaneous electric water heater with anti-scalding function is characterized in that the bypass outlet pipe includes a top bypass pipe section and a left bypass pipe section.

[0013] The instant electric water heater with anti-scalding function is characterized in that: the water inlet pipe of the water inlet fitting includes a water inlet chamber, a partition and a water outlet chamber, the water outlet chamber wall is provided with an axial guide groove and an arc-shaped water inlet groove, and the partition is provided with a water guide hole;

[0014] It also includes an internal connector, a spring, and a float, with an axial guide plate on the float;

[0015] The inner connector is located inside the upper end of the water outlet cavity, the float is located inside the water outlet cavity and is clearance-fitted, the axial guide plate is slidingly fitted with the axial guide groove, and the spring is located on the float, with the upper end of the spring fitting with the inner connector.

[0016] This utility model discloses an instant electric water heater with anti-scalding function. When the water outlet pipe is closed, the valve core is located on the bottom plate of the valve core cavity and is sealed. When the water outlet pipe is opened, the valve core slowly rises under the action of cold water pressure, thereby ensuring the amount of cold water in the bypass water outlet pipe and realizing anti-scalding. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 This is a cross-sectional view of the water outlet pipe of this utility model in the closed state.

[0019] Figure 3 This is a cross-sectional view of the water outlet pipe of this utility model during the opening process.

[0020] Figure 4 This is a cross-sectional view of the water outlet pipe of this utility model after it has been opened.

[0021] Figure 5 This is a partial sectional view of the present invention.

[0022] Figure 6 This is a partial exploded perspective view of this utility model. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] 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 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.

[0025] like Figure 1 , Figure 2 As shown, an instant electric water heater with anti-scalding function includes an instant heating element 1, an inlet pipe 2, a bypass valve 3, a bypass inlet pipe 41, a bypass outlet pipe 42, and an outlet pipe 5.

[0026] Water inlet fitting 2 includes a straight water inlet pipe 21 and a bypass branch pipe 22;

[0027] The bypass valve 3 includes a valve body 31, a valve cover 32, and a valve core 33. The valve body 31 has a valve core cavity 311 with an upper opening and a water inlet 312 on the bottom plate. The valve cover 32 has a water outlet 321. The valve core 33 is located inside the valve core cavity 311, and the gap between them forms a water channel. The valve cover 32 is fastened to the upper opening of the valve core cavity 311. The valve core 33 has a large buoyancy due to its weight.

[0028] The bypass inlet pipe 41 is a 90-degree elbow;

[0029] The inlet straight pipe 21 is connected to the cold water inlet pipe of the instant heating element 1, and the bypass branch pipe 22 is connected to the inlet interface 312 through the bypass inlet pipe 41; the outlet pipe fitting 5 is connected to the hot water outlet pipe of the instant heating element 1, and the bypass outlet pipe 42 is connected to the outlet interface 321 and the outlet pipe fitting 5, such as Figure 2 As shown, with the outlet pipe 5 closed, the valve core 33 and the bottom plate of the valve core cavity 311 are in contact to seal the inlet end. At this time, the valve core cavity 311 above the valve core 33 and the outlet bypass pipe 42 contain water; Figure 4 As shown, when the outlet pipe 5 is open, the valve core 33 and the valve cover 32 are in contact to seal the outlet end; after the outlet pipe is closed, there is no water flow in the inlet pipe 2, the valve core 33 falls down until it seals the inlet with the bottom plate of the valve core cavity, and the water inlet is sealed from the outlet end to the inlet end.

[0030] With this design, when the outlet pipe is opened, water enters the valve core cavity 311 through the inlet pipe 2. Under the action of water pressure, the valve core 33 slowly rises until it is sealed against the valve cover, overcoming the defect of insufficient cold water supply caused by excessively rapid sealing in existing technologies. Sufficient cold water supply effectively prevents scalding.

[0031] As a further improvement of this utility model: the water outlet pipe fitting 5 includes an angled pipe section 51 and a hot water branch pipe section 52.

[0032] The hot water branch pipe 52 is connected to the horizontal pipe 511 of the angled pipe section 51, and the vertical pipe 512 of the angled pipe section 51 is connected to the shower head; the bypass outlet pipe 42 is connected to the suspended end of the horizontal pipe 511.

[0033] The valve core 33 is cylindrical; or the valve core 33 is polygonal, with the ridges and valve core cavity 311 slidingly fitted.

[0034] As a further improvement of this utility model: the bypass outlet pipe 42 includes a top bypass pipe 421 and a left bypass pipe 422, the left bypass pipe 422 being connected to the suspended end of the horizontal pipe 511. The bypass valve 3 is located on the right side. This layout makes full use of the space in the housing 10, resulting in a compact structure. The bypass outlet pipe 42 has a large water storage capacity, meeting the requirements for scalding prevention.

[0035] As a further improvement of this utility model: the water inlet straight pipe 21 of the water inlet fitting 2 includes a water inlet cavity 211, a partition 212 and a water outlet cavity 213. The wall of the water outlet cavity 213 is provided with an axial guide groove 2131 and an arc-shaped water inlet groove 2132. The partition 212 is provided with a water guide hole. The bypass branch pipe 22 is connected to the water outlet cavity 213.

[0036] It also includes an inner connector 7, a spring 8 and a float 9, with an axial guide plate 91 on the float 9;

[0037] The inner connector 7 is located inside the upper end of the water outlet chamber 213. The float 9 is located inside the water outlet chamber 213 with a clearance fit. The axial guide plate 61 is slidably fitted with the axial guide groove 2131. The spring 8 is located on the float 9, and the upper end of the spring 8 is fitted with the inner connector 7. The inner connector 7 is connected to the water inlet of the instant heating element 1 through a pipeline.

[0038] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An instantaneous electric water heater with anti-scalding function, characterized in that: Includes instant heating element, inlet pipe fittings, bypass valve, bypass inlet pipe, bypass outlet pipe, and outlet pipe fittings. Water inlet fittings include straight inlet pipes and bypass branch pipes; The bypass valve includes a valve body, a valve cover, and a valve core. The valve body has a valve core cavity with an upper opening, an inlet port on the base plate, and an outlet port on the valve cover. The valve core is located inside the valve core cavity, and the gap between them forms a water channel. The valve cover is engaged with the upper opening of the valve core cavity. The inlet straight pipe is connected to the cold water inlet pipe of the instant heating element, and the bypass branch pipe is connected to the inlet interface through the bypass inlet pipe; the outlet fitting is connected to the hot water outlet pipe of the instant heating element, and the bypass outlet pipe is connected to the outlet interface and the outlet fitting. When the outlet fitting is closed, the valve core and the valve core cavity bottom plate are fitted together to seal the inlet end. When the outlet fitting is open, the valve core and the valve cover are fitted together to seal the outlet end.

2. An instantaneous electric water heater with anti-scalding function according to claim 1, characterized in that: The water outlet fitting includes an angled pipe section and a hot water branch pipe section. The hot water branch pipe is connected to the horizontal pipe of the angled pipe section, and the vertical pipe of the angled pipe section is connected to the shower head; the bypass outlet pipe is connected to the suspended end of the horizontal pipe.

3. An instantaneous electric water heater with anti-scalding function according to claim 1, characterized in that: The valve core is cylindrical.

4. An instantaneous electric water heater with anti-scalding function according to claim 1, characterized in that: The valve core is multi-faceted and prismatic, with the edges slidingly fitted into the valve core cavity.

5. An instantaneous electric water heater with anti-scalding function according to claim 1, characterized in that: The bypass outlet pipe includes a top bypass pipe section and a left bypass pipe section.

6. An instantaneous electric water heater with anti-scalding function according to claim 1, 2, 3, 4, or 5, characterized in that: The water inlet pipe of the water inlet fitting includes an inlet chamber, a partition and an outlet chamber. The outlet chamber wall is provided with an axial guide groove and an arc-shaped inlet groove, and the partition is provided with a water guide hole. It also includes an internal connector, a spring, and a float, with an axial guide plate on the float; The inner connector is located inside the upper end of the water outlet cavity, the float is located inside the water outlet cavity and is clearance-fitted, the axial guide plate is slidingly fitted with the axial guide groove, and the spring is located on the float, with the upper end of the spring fitting with the inner connector.

Images