CN-224215572-U - Water inlet device and electric water heater thereof

CN224215572UCN 224215572 UCN224215572 UCN 224215572UCN-224215572-U

Abstract

The utility model provides a water inlet device and an electric water heater thereof, comprising a water inlet joint and an outer tube, wherein the first end of the outer tube is connected with the water inlet joint, an inner tube is sleeved in the outer tube, an outer flow passage is formed by a gap between the inner wall of the outer tube and the outer wall of the inner tube, an outer cavity water outlet is arranged on the side wall of the outer tube, an inner flow passage communicated with the water inlet joint is formed in an inner cavity of the inner tube, a water inlet port is arranged at one end of the inner tube close to the water inlet joint, an inner cavity water outlet is arranged at one end of the inner tube far away from the water inlet joint, the water inlet port is communicated with the inner flow passage and the outer flow passage through the inner flow passage, a slow flow structure is arranged in the inner flow passage, and a multi-stage micro step is arranged in the flow passage of the integrally arranged water inlet structure, so that unnecessary parts such as a water retaining structure and the like of the whole electric water heater can be reduced, and meanwhile, the hot water quantity of the electric water heater can be greatly promoted.

Inventors

LI PENGFEI
PU JUNCHENG
TANG WEIWEI
Ma haichuan
ZHONG SHAOHAI

Assignees

广东万家乐燃气具有限公司

Dates

Publication Date: 20260508
Application Date: 20250529

Claims (10)

1. The utility model provides a water inlet device, its characterized in that, includes water inlet joint and outer tube, the first end of outer tube with water inlet joint connects, the outer tube endotheca is equipped with the inner tube, the inner wall of outer tube with clearance between the outer wall of inner tube forms the outer runner, be provided with outer chamber delivery port on the lateral wall of outer tube, the inner chamber of inner tube form with the inner runner of water inlet joint intercommunication, the inner tube is close to water inlet joint's one end is provided with the inlet port, the inner tube is kept away from water inlet joint's one end is provided with the inner chamber delivery port, the inlet port with the inner chamber delivery port passes through the inner runner intercommunication, the inner chamber delivery port intercommunication the inner runner with the outer runner, be provided with the slow flow structure in the inner runner.
2. The water inlet device of claim 1, wherein the slow flow structure comprises a fixed rod and a plurality of slow flow sheets, and the slow flow sheets are sequentially arranged on the fixed rod along the extending direction of the fixed rod.
3. The water inlet device of claim 2, wherein the slow flow sheet comprises a first slow flow sheet and a second slow flow sheet which are respectively positioned at opposite sides of two ends of the fixed rod, and the first slow flow sheet and the second slow flow sheet are alternately arranged along the extending direction of the fixed rod.
4. The water inlet device of claim 2, wherein the bottom surfaces of the slow flow sheets and the extending direction of the fixing rod form an included angle, the included angle is 30-90 degrees, and the shape of the slow flow sheets is matched with the shape of the inner cavity.
5. The water inlet device of claim 4, wherein the included angle is 90 degrees, the inner cavity section of the inner tube is circular, and the corresponding slow flow sheet is semicircular.
6. The water inlet device according to claim 1, wherein the end part of the inner tube is connected with the inner wall of the second end part of the outer tube, the inner cavity water outlet is positioned on the side wall of the inner tube, a plurality of inner cavity water outlets are arranged, the inner cavity water outlets are distributed along the peripheral wall of the inner tube, and the interval between two adjacent inner cavity water outlets is the same.
7. The water inlet device of claim 1, wherein the outer flow passage surrounds the inner tube, a plurality of the outer cavity water outlets are arranged, the plurality of the outer cavity water outlets are uniformly distributed along the side wall of the outer tube, and the outer cavity water outlets are communicated with the outer side of the outer flow passage and the outer tube.
8. The water inlet device of claim 1, wherein an annular limiting groove is formed in the position, located at the outer side wall, of the second end of the inner tube, and a sealing ring is arranged in the annular limiting groove and located between the inner tube and the outer tube.
9. An electric water heater, characterized by comprising a water inlet device as claimed in any one of claims 1-8, wherein an inner container for storing water is arranged inside the electric water heater, and the water inlet device is arranged at a water inlet of the inner container.
10. The electric water heater of claim 9, wherein the water inlet connector is provided with an inner insert and an outer insert with threads, the inner insert is in threaded connection with a water inlet of an electric water heater inner container, and the outer insert is in threaded connection with a water inlet end of a user.

Description

Water inlet device and electric water heater thereof Technical Field The utility model relates to the field of water heaters, in particular to a water inlet device and an electric water heater thereof. Background The electric water heater is a water heater which uses electricity as energy source to heat. The electric water heater is three water heaters which are in parallel with the gas water heater and the solar water heater. The electric water heater can be divided into three types of water storage type, instant heating type and instant heating type according to the heating power, wherein the water storage type electric water heater is also called a positive displacement type or heat storage type electric water heater, can automatically keep temperature and keep temperature, can supply hot water as required during power failure, and the most important part of the water storage type electric water heater is an inner container, and relates to the service performance and service life of the water heater, wherein a water inlet component is directly communicated with the inner container to provide a water source for the water heater. The water in the water heater inner bag can form the temperature gradient, the inside temperature of inner bag has the layering in longitudinal direction, the inner bag upper strata is hot water, and cold water is located the inner bag lower floor, consequently, the subassembly delivery port of intaking is located water heater inner bag below, carry cold water to the inner bag is interior, but when cold water is through the subassembly of intaking from the water inlet injection water heater bottom fast, because the velocity of flow of intaking is great, the direction of intaking is direct alignment inner bag, the flow of water can disturb the water layer of different temperatures in the inner bag, lead to upper strata hot water and newly-entering cold water to mix, thereby reduce the overall efficiency of water heater. The water flow of the electric water heater water inlet has larger impact on the hot water on the upper layer inside the liner, and disturbs the stability of the hot water layer, so that the heat loss is serious, and the hot water quantity is low. In order to improve the hot water quantity, parts using water blocking components and the like are arranged on the market, so that the water inlet impact is reduced, and the hot water quantity is improved. However, the existing water inlet parts of the electric water heater reduce the impact on the inside of the liner, ensure the stability of a hot water layer to a certain extent, and also have the problems of complicated installation and high cost due to more complex structures and more parts. Disclosure of utility model Based on this, it is necessary to provide a water inlet device and an electric water heater thereof. In order to solve the technical problems, the utility model provides a water inlet device which comprises a water inlet connector and an outer tube, wherein a first end of the outer tube is connected with the water inlet connector, an inner tube is sleeved in the outer tube, a gap between the inner wall of the outer tube and the outer wall of the inner tube forms an outer flow channel, an outer cavity water outlet is arranged on the side wall of the outer tube, an inner cavity of the inner tube forms an inner flow channel communicated with the water inlet connector, a water inlet port is arranged at one end of the inner tube, which is close to the water inlet connector, an inner cavity water outlet is arranged at one end of the inner tube, which is far away from the water inlet connector, the water inlet port is communicated with the inner cavity water outlet through the inner flow channel, the inner cavity water outlet is communicated with the inner flow channel and the outer flow channel, and a slow flow structure is arranged in the inner flow channel. Preferably, the slow flow structure comprises a fixed rod and a plurality of slow flow sheets, and the slow flow sheets are sequentially arranged on the fixed rod along the extending direction of the fixed rod. Preferably, the slow flow piece comprises a first slow flow piece and a second slow flow piece which are respectively positioned on opposite sides of two ends of the fixing rod, and the first slow flow piece and the second slow flow piece are alternately arranged along the extending direction of the fixing rod. Preferably, the bottom surfaces of the slow flow sheets and the extending direction of the fixing rod form an included angle, the value range of the included angle is 30-90 degrees, and the shape of the slow flow sheets is adapted to the shape of the inner cavity. Preferably, the included angle is 90 degrees, the inner cavity section of the inner tube is circular, and the shape of the corresponding slow flow sheet is semicircular. Preferably, the end part of the inner tube is connected with the inner wall of the second end part of the outer t