CN210624887U

CN210624887U - Water heater

Info

Publication number: CN210624887U
Application number: CN201921082042.9U
Authority: CN
Inventors: 陈智照
Original assignee: Wenzhou Muge Intelligent Technology Co ltd
Current assignee: Wenzhou Muge Intelligent Technology Co ltd
Priority date: 2019-07-11
Filing date: 2019-07-11
Publication date: 2020-05-26
Anticipated expiration: 2029-07-11

Abstract

A water heater comprises an outer shell, a control unit, a heating unit and a temperature control unit, wherein a containing cavity for containing the control unit, the heating unit and the temperature control unit is arranged in the outer shell; temperature control unit fixed connection is on the mounting panel, the temperature control unit is including the temperature sensor and the temperature protector of equal connection control unit, temperature sensor is located water inlet one side and inserts the water conservancy diversion passageway in, temperature sensor is used for detecting the liquid temperature of water inlet, the heating strip is connected to the temperature protector, water conservancy diversion passageway middle part is connected to the temperature protector lower extreme.

Description

Water heater

Technical Field

The utility model relates to a water heater field, concretely relates to water heater.

Background

At present, domestic water heater products mainly comprise an electric water heater, a gas water heater, a solar water heater, an air energy water heater and the like. The field of water heaters is mainly dominated by traditional electric water heaters and gas water heaters. Further, the electric water heater is divided into a water storage type, an instant heating type and an instant heating type according to heating power. Among them, the water storage type water heater and the instant heating type water heater are widely used. The water storage type electric water heater is usually provided with an inner container for storing water, has the advantages of low power, cleanness, sanitation, safety and reliability, and is suitable for families with few people to use because hot water needs certain preheating time. Along with the increasing living standard of people, people also have higher and higher requirements on water heaters. For example, users have made further demands for compact design, water saving, environmental protection, comfort, health, etc., in addition to basic demands for safety and reliability. Therefore, there is a need for improvement of the existing water heater to better meet the user's use requirement and improve the user's use experience.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a water heater:

a water heater comprises an outer shell, a control unit, a heating unit and a temperature control unit, wherein an accommodating chamber for accommodating the control unit, the heating unit and the temperature control unit is arranged in the outer shell,

the heating unit comprises a mounting plate, the mounting plate is hermetically connected with the bottom of the outer shell to form a flow guide channel for guiding liquid to circulate, the flow guide channel is provided with a water inlet and a water outlet, a heating strip correspondingly extending along the flow guide channel is arranged in the flow guide channel, and the heating strip is connected with the control unit;

temperature control unit fixed connection is on the mounting panel, the temperature control unit is including the temperature sensor and the temperature protector of equal connection control unit, temperature sensor is located water inlet one side and inserts the water conservancy diversion passageway, temperature sensor is used for detecting the liquid temperature of water inlet, the heating strip is connected to the temperature protector, water conservancy diversion passageway middle part is connected to the temperature protector lower extreme, and when the liquid temperature that the temperature protector detected water conservancy diversion passageway middle part was greater than the setting value, temperature protector open circuit to make the heating strip stop heating.

Preferably, the heating strip is a flat metal electric heating strip, and the metal electric heating strip is fixedly connected to the upper end face of the bottom of the outer shell. Thereby the flat structure of metal electrical heating strip had both increased the area of contact with liquid and had increased the heat conduction effect, the welding of the metal electrical heating strip of being convenient for again and shell body bottom has improved the structural stability of product.

Preferably, the control unit comprises an upper cover plate and a control circuit board arranged at the lower end of the upper cover plate, the upper cover plate and the outer shell form a cover fit, and the lower end of the upper cover plate is provided with a clamping groove for accommodating the control circuit board, so that the control circuit board is protected, and liquid or dust is effectively prevented from corroding the control circuit board.

Preferably, the temperature protector includes a normally closed type recoverable switch and an unrecoverable fuse connected in series with each other.

Preferably, still include explosion-proof unit, explosion-proof unit is including the sealed cavity portion of intercommunication water conservancy diversion passageway, be equipped with the elastic rubber membrane in the sealed cavity portion, elastic rubber membrane edge airtight connection is in sealed cavity portion inner wall to with sealed cavity portion isolated into cavity and lower cavity.

Preferably, the upper cavity of the sealed cavity part is of a conical structure, and the lower cavity of the sealed cavity part is of a cylindrical structure, so that the elastic rubber mold can stretch conveniently.

The utility model discloses following beneficial effect has: this product forms the water conservancy diversion passageway through flaky shell body bottom and mounting panel, thereby the heating plate of rethread water conservancy diversion inslot heats liquid, has reduced the volume that the heater block occupied, also is convenient for install more. In addition, the product has a first set temperature value and a second set temperature value, and the first set temperature value is smaller than the second set temperature value. When the temperature sensor detects that the liquid temperature is less than a first set temperature value, the control unit controls the heating strip to start heating, when the temperature sensor detects that the liquid temperature is greater than the first set temperature value, the control unit controls the heating strip to stop heating, and when the temperature protector detects that the liquid temperature is greater than a second set temperature value, the control unit controls the heating strip to stop heating, so that corresponding temperature protection is carried out on products.

Drawings

Fig. 1 is a schematic overall structure diagram of the embodiment.

FIG. 2 is a partial cross-sectional view of an embodiment.

Fig. 3 is a schematic view of the internal structure of the embodiment.

Fig. 4 is a perspective view of the heating unit according to the embodiment.

Fig. 5 is a schematic plan view of the heating unit of the embodiment.

1. An outer housing; 2. mounting a plate; 3. a flow guide channel; 4. heating the strip; 5. a temperature sensor; 6. a temperature protector; 7. an upper cover plate; 8. a control circuit board; 9. sealing the cavity part; 10. an elastic rubber film; 11. an upper cavity; 12. and a lower cavity.

Detailed Description

The invention will be further described with reference to the following examples and figures 1-5.

Example (b): a water heater comprises an outer shell 1, a control unit, a heating unit, a temperature control unit and an explosion-proof unit. The bottom of the outer shell 1 and the outer shell 1 form an accommodating chamber for accommodating the control unit, the explosion-proof unit, the heating unit and the temperature control unit. The control unit comprises an upper cover plate 7 and a control circuit board 8 installed at the lower end of the upper cover plate 7, the upper cover plate 7 and the outer shell 1 form a cover matching, and a clamping groove for containing the control circuit board 8 is formed in the lower end of the upper cover plate 7, so that the control circuit board 8 is protected, and liquid or dust is effectively prevented from corroding the control circuit board 8.

The heating unit comprises a mounting plate 2 and a heating strip 4 fixedly welded on the bottom of the outer shell 1, the mounting plate 2 is connected with the bottom of the outer shell 1 in a sealing manner to form a flow guide channel 3 for guiding liquid to circulate, and the flow guide channel 3 is bent to advance and is provided with a water inlet and a water outlet. The heating strips 4 are positioned in the flow guide channel 3 and correspondingly extend along the flow guide channel 3, and the heating strips 4 are connected with the control circuit board 8. The heating strip 4 is a flat metal electric heating strip 4, and the metal electric heating strip 4 is fixedly connected to the upper end face of the bottom of the outer shell 1. Thereby the flat structure of metal electric heating strip 4 had both increased the area of contact with liquid and had increased the heat conduction effect, the welding of the metal electric heating strip 4 of being convenient for again and shell body 1 bottom has improved the structural stability of product. This product forms water conservancy diversion passageway 3 through 1 bottom of flaky shell body and mounting panel 2, thereby the heating plate in the rethread water conservancy diversion passageway 3 heats liquid, has reduced the volume that the heater block occupied, also is convenient for more the installation.

Temperature control unit fixed connection is on mounting panel 2, the temperature control unit is including equal connection control circuit board 8's temperature sensor 5 and temperature protector 6, temperature sensor 5 is located water inlet one side and inserts in water conservancy diversion passageway 3, temperature sensor 5 is used for detecting the liquid temperature of water inlet. The temperature protector 6 is connected in series between the heating strip 4 and the control circuit board 8, the middle part of the diversion channel 3 is connected to the lower end of the temperature protector 6, and when the temperature of the liquid at the middle part of the diversion channel 3 detected by the temperature protector 6 is greater than a set value, the temperature protector 6 is disconnected with a circuit, so that the heating strip 4 stops heating. The temperature protector 6 includes a normally closed type recoverable switch and an unrecoverable fuse connected in series with each other. The normally closed restorable switch is a temperature controller which is common in the market and adopts a bimetallic strip as a temperature sensing assembly, and the fuse adopts a fuse wire structure.

The explosion-proof unit is including the sealed cavity portion 9 of intercommunication water conservancy diversion passageway 3, and the sealed cavity portion 9 of this patent adopts plastics or hard materials such as metal material to enclose to close and form. An elastic rubber membrane 10 is arranged in the sealed cavity part 9, and the edge of the elastic rubber membrane 10 is hermetically connected with the inner wall of the sealed cavity part 9, so that the sealed cavity part 9 is isolated into an upper cavity 11 and a lower cavity 12. When the temperature of the liquid in the flow guide channel 3 changes, the hydraulic pressure in the flow guide channel 3 also changes, when the hydraulic pressure rises, the elastic rubber membrane 10 protrudes upwards, and when the hydraulic pressure decreases, the elastic rubber membrane 10 protrudes downwards, so that the hydraulic pressure in the flow guide channel 3 is correspondingly regulated and controlled, and the flow guide channel 3 is prevented from being broken down due to the change of the hydraulic pressure. The upper cavity 11 of the sealed cavity part 9 of the product is of a conical structure and the lower cavity 12 of the product is of a cylindrical structure, so that the elastic rubber die can stretch conveniently.

The operation principle is as follows: the product has a first set temperature value, a second set temperature value and a third set temperature value which become larger in sequence. When the temperature sensor 5 detects that the liquid temperature is lower than a first set temperature value, the control unit controls the heating strip 4 to start heating, and when the temperature sensor 5 detects that the liquid temperature is higher than the first set temperature value, the control unit controls the heating strip 4 to stop heating. When the temperature protector 6 detects that the liquid temperature is higher than the second set temperature value, the normally closed restorable switches connected in series are disconnected, so that the heating strip 4 stops heating, and corresponding temperature protection is performed on the product. And when the temperature is higher than the third set value, the fuse is started, the fuse wire is disconnected, and the heating of the heating wire is stopped. The liquid temperature is prevented from being excessively high when both the normally-closed type restorable switch and the temperature sensor 5 fail.

It is obvious that the above embodiments of the present invention are only examples for illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. There is no need or no way to give poor examples of all embodiments. And that such obvious changes and modifications are within the scope of the present invention as defined by the appended claims.

Claims

1. The utility model provides a water heater, includes shell body (1), the control unit, heating element and temperature control unit, its characterized in that: an accommodating chamber for accommodating the control unit, the heating unit and the temperature control unit is arranged in the outer shell (1),

the heating unit comprises a mounting plate (2), the mounting plate (2) is hermetically connected with the bottom of the outer shell (1) to form a flow guide channel (3) for guiding liquid to circulate, the flow guide channel (3) is provided with a water inlet and a water outlet, a heating strip (4) correspondingly extending along the flow guide channel (3) is arranged in the flow guide channel (3), and the heating strip (4) is connected with the control unit;

temperature control unit fixed connection is on mounting panel (2), the temperature control unit is including temperature sensor (5) and temperature protector (6) of equal connection control unit, temperature sensor (5) are located water inlet one side and insert water conservancy diversion passageway (3), temperature sensor (5) are used for detecting the liquid temperature of water inlet, heating strip (4) is connected in temperature protector (6), water conservancy diversion passageway (3) middle part is connected to temperature protector (6) lower extreme, and when temperature protector (6) detected the liquid temperature of water conservancy diversion passageway (3) middle part and is greater than the setting value, temperature protector (6) open circuit, heating strip (4) stop heating.

2. A water heater as claimed in claim 1, wherein: the heating strip (4) is a flat metal electric heating strip (4), and the metal electric heating strip (4) is fixedly connected to the upper end face of the bottom of the outer shell (1).

3. A water heater as claimed in claim 1, wherein: the control unit comprises an upper cover plate (7) and a control circuit board (8) arranged at the lower end of the upper cover plate (7), the upper cover plate (7) and the outer shell (1) form a cover fit, and a clamping groove for accommodating the control circuit board (8) is formed in the lower end of the upper cover plate (7).

4. A water heater as claimed in claim 1, wherein: the temperature protector (6) comprises a normally-closed type recoverable switch and an unrecoverable fuse which are connected in series with each other.

5. A water heater as claimed in claim 1, wherein: still include explosion-proof unit, explosion-proof unit is including sealed cavity portion (9) of intercommunication water conservancy diversion passageway (3), be equipped with elastic rubber membrane (10) in sealed cavity portion (9), elastic rubber membrane (10) edge sealing connection is in sealed cavity portion (9) inner wall to it isolates into cavity (11) and cavity (12) down to seal cavity portion (9).

6. A water heater as claimed in claim 5, wherein: the upper cavity (11) of the sealed cavity part (9) is of a conical structure, and the lower cavity (12) is of a cylindrical structure.