Inner container water outlet pipe for preventing pressure relief and water dripping of safety valve of water storage type electric water heater

Abstract

The utility model discloses an inner container water outlet pipe for preventing a safety valve from releasing pressure and dripping water for a water storage type electric water heater, and relates to the technical field of water heaters. The water storage type electric water heater comprises a water storage type electric water heater body, and a water inlet assembly used for water inflow is connected to the bottom face of the water storage type electric water heater body in an inserted mode. According to the water storage type electric water heater, air can be compressed, so that the volume of expanded water is adjusted through the volume of compressed air in the air compression area in the water storage type electric water heater body, and the volume of water in the water storage type electric water heater body does not need to be discharged through a pressure relief opening of the safety valve; when water is injected into the water storage inner container, the water is discharged after reaching the water outlet, and the water outlet is separated from the top of the water storage inner container by a certain distance, and the upper part of the water outlet pipe is sealed by the water outlet pipe sealing head; therefore, a certain air compression area without water is reserved on the upper portion of the water outlet on the surface of the water outlet pipe, and water can be prevented from dripping through the safety valve after being heated and expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, and particularly relates to an inner tank water outlet pipe for preventing a safety valve from discharging pressure and dripping water in a storage water heater. Background Technique

[0002] The working principle of a storage water heater is that when a user needs hot water, a temperature controller will detect the water temperature and start a heating element to heat the water to a set temperature. After the heating is completed, the insulating material in the water tank can effectively maintain the water temperature and ensure that the stored hot water remains hot for a period of time for ready use. The storage water heater is a simple, reliable and low-cost hot water supply method, suitable for the hot water needs of families and small commercial places.

[0003] The electric water heater stores water through a storage inner tank, and the water in it has a certain volume. Due to the physical property of thermal expansion and contraction of water, the volume of water becomes larger after heating. In order to protect the inner tank, the existing electric water heaters are equipped with a safety valve protection component. Although this component effectively protects the inner tank, the dripping water from the safety valve brings relatively big troubles to users. It is easy to drip water, which affects life and may even cause people to slip. Although a diversion pipe can be installed, the water still has to be drained on the bathroom floor, resulting in wetness, and it also damages the wall, and even causes people to slip and fall. Moreover, some of the existing installation positions are high, and the diversion pipe is in a suspended state, affecting the beauty of the home fine decoration and easily resulting in a poor market reputation.

[0004] Therefore, an inner tank water outlet pipe for preventing a safety valve from discharging pressure and dripping water in a storage water heater is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide an inner tank water outlet pipe for preventing a safety valve from discharging pressure and dripping water in a storage water heater to solve the problems mentioned in the above background technique.

[0006] The utility model specifically adopts the following technical solutions to achieve the above purpose:

[0007] An inner tank water outlet pipe for preventing a safety valve from discharging pressure and dripping water in a storage water heater includes a storage water heater body. An inlet assembly for water inlet is inserted at the bottom surface of the storage water heater body. An outlet assembly for discharging the water in the storage water heater body is inserted at the bottom end of the storage water heater body, and a water outlet is provided on the surface of the outlet assembly.

[0008] Further, the storage water heater body includes a mounting rack. A storage inner tank is fixedly installed on the end face of the mounting rack. A controller is arranged on the front side wall of the storage inner tank. An electric heating tube for heating the water in the mounting rack is arranged on one inner wall of the mounting rack.

[0009] Further, a threaded mounting hole is provided on another side wall of the water storage inner tank, and a plug is threadedly inserted into the threaded mounting hole. A magnesium rod is arranged on the end face of the plug and inside the water storage inner tank.

[0010] Further, the water inlet assembly includes a water inlet pipe. The water inlet pipe is inserted into the bottom of the water storage inner tank. A water inlet joint is fixedly installed at the bottom end of the water inlet pipe. Water inlet holes are provided on the surface of the water inlet pipe.

[0011] Further, the water outlet assembly includes a water outlet pipe. The water outlet pipe is inserted into the bottom surface of the water storage inner tank. A water outlet joint is fixedly installed at the bottom end of the water outlet pipe. A water outlet pipe head is inserted at the top end of the water outlet pipe. A water outlet is provided on the surface of the water outlet pipe and near the water outlet pipe head.

[0012] Further, the water outlets are arranged in an array on the surface of the water outlet pipe, and the distance between the water outlets and the top end of the water outlet pipe is 3 - 5 cm.

[0013] The beneficial effects of the present utility model are as follows:

[0014] By providing multiple groups of water outlets on the surface of the water outlet assembly, a certain air compression area is left inside the storage type electric water heater body, retaining a certain amount of air. When water is heated, its volume increases. However, the design of this structure enables a certain air compression area to be forcibly left above the inside of the storage type electric water heater body after water injection. Air itself can be compressed, and the volume of the expanded water can be solved by the compressed air volume in the air compression area inside the storage type electric water heater body, so that it is not necessary for the volume of water in the storage type electric water heater body to be discharged through the safety valve relief port, reducing the complaints of electric water heater users caused by the safety valve dripping water. When the water storage inner tank is filled with water and reaches the water outlet, water flows out. Since the outlet is at a certain distance from the top of the water storage inner tank and the upper part of the water outlet pipe is sealed by the water outlet pipe head, a certain air compression area without water will be reserved above the water outlets on the surface of the water outlet pipe, which can avoid water dripping through the safety valve after water heating and expansion. Description of the Drawings

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

[0016] Figure 2 is a rear view of the present utility model;

[0017] Figure 3 is a partial rear view of the present utility model;

[0018] Figure 4 is a front cross-sectional view of the present utility model;

[0019] Figure 5 is a front cross-sectional view of the water outlet assembly of the present utility model;

[0020] Reference numerals: 1, the body of a storage-type electric water heater; 101, mounting bracket; 102, water storage inner tank; 103, controller; 104, electric heating tube; 2, plug; 3, magnesium rod; 4, water inlet assembly; 401, water inlet pipe; 402, water inlet joint; 403, water inlet hole; 5, water outlet assembly; 501, water outlet pipe; 502, water outlet joint; 503, water outlet pipe end cap; 6, water outlet. Specific embodiments

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0023] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0024] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", "upper", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model.

[0025] Such as Figures 1 to 5As shown in the figure, an inner water outlet pipe of a storage water heater for preventing the safety valve from discharging and dripping water includes a storage water heater body 1. An inlet assembly 4 for water inlet is inserted into the bottom surface of the storage water heater body 1. An outlet assembly 5 for discharging the water in the storage water heater body 1 is inserted into the bottom end of the storage water heater body 1, and a water outlet 6 is formed on the surface of the outlet assembly 5. More specifically, by arranging multiple groups of water outlets 6 on the surface of the outlet assembly 5, a certain air compression area is left inside the storage water heater body 1, and a certain amount of air is retained. When the water is heated, its volume increases. However, the design of this structure makes it so that after the storage water heater body 1 is filled with water, a certain air compression area is forcibly left above the storage water heater body 1. Air itself can be compressed, and the volume of the expanded water can be solved by the compressed air volume in the air compression area inside the storage water heater body 1, so that the volume of water in the storage water heater body 1 does not need to be discharged through the safety valve relief port, reducing the complaints brought by the safety valve dripping water to the users of the water heater.

[0026] The storage water heater body 1 includes a mounting rack 101. A storage water tank 102 is fixedly installed on the end face of the mounting rack 101. A controller 103 is arranged on the front side wall of the storage water tank 102. An electric heating tube 104 for heating the water in the mounting rack 101 is arranged on one inner wall of the mounting rack 101. More specifically, the mounting rack 101 makes it convenient to hang the storage water tank 102, and the controller 103 controls the electric heating tube 104 to heat the water in the mounting rack 101.

[0027] Another side wall of the storage water tank 102 is provided with a threaded mounting hole, and a plug 2 is threadedly inserted into the threaded mounting hole. A magnesium rod 3 is arranged on the end face of the plug 2 and inside the storage water tank 102. More specifically, by inserting the plug 2 into the threaded mounting hole on the surface of the storage water tank 102, the magnesium rod 3 is fixed inside the storage water heater body 1. Through the magnesium rod 3, as the anode, it can extend the service life of the storage water tank 102 and reduce corrosive damage.

[0028] The inlet assembly 4 includes an inlet pipe 401. The inlet pipe 401 is inserted into the bottom of the storage water tank 102. A water inlet joint 402 is fixedly installed at the bottom end of the inlet pipe 401. Water inlet holes 403 are formed on the surface of the inlet pipe 401. More specifically, the water inlet joint 402 makes it convenient to connect with the water supply pipe, and through the inlet pipe 401 and the water inlet holes 403 on its surface, it is convenient for water to enter the inside of the storage water tank 102.

[0029] The water outlet assembly 5 includes a water outlet pipe 501. The bottom surface of the water storage inner tank 102 is plugged with the water outlet pipe 501. A water outlet joint 502 is fixedly installed at the bottom end of the water outlet pipe 501. A water outlet pipe head 503 is plugged at the top end of the water outlet pipe 501. A water outlet 6 is opened on the surface of the water outlet pipe 501 and near the water outlet pipe head 503. More specifically, it is convenient to connect with a hot water pipe through the water outlet joint 502, and the water in the water storage inner tank 102 is discharged through the water outlet 6 on the surface of the water outlet pipe 501.

[0030] The water outlets 6 are arranged in an array on the surface of the water outlet pipe 501, and the distance between the water outlets 6 and the top end of the water outlet pipe 501 is 3 - 5 cm. More specifically, the air compression area is reserved in the water storage inner tank 102 through the water outlets 6 on the surface of the water outlet pipe 501, thereby preventing the unnecessary discharge of the water volume in the water storage inner tank 102 through the traditional safety valve pressure relief port.

[0031] Taking a 60 - liter water heater as an example, the minimum inlet water temperature is generally 5 degrees, and the water heater generally heats the water to 75 degrees, with a temperature rise of 70 degrees. The water is between 0 - 100 degrees, and the volume expansion coefficient of water is 0.00021 / °C. For a 60 - liter water heater with a temperature rise of 70 degrees, the total expanded volume is 60 * 70 * 0.00021 = 0.882 liters.

[0032] The air compression ratio is designed based on a tap water pressure of 0.5 MPa. Generally, the safety valve is 0.8 MPa. The reserved air space in the inner tank should be at least under the premise of tap water pressure of 0.5 MPa, and the standard air pressure is 0.1 MPa. When adding water, the air is compressed from the initial 0.5 MPa to 0.8 MPa. If the volume change is greater than 0.882 liters, the safety valve will not release pressure externally, avoiding the safety valve from dripping water. Taking a 60 - liter water heater as an example for calculation, the air compression coefficient is 0.003. According to the formula P1V1 = P2V2, P1 = 0.1 MPa, P2 = 0.8 MPa, V2 = 0.882 liters,

[0033] V1 = P2V2 / P1 = 0.8 * 0.882 / 0.1 = 7.056 liters.

[0034] That is, designed according to the inlet water pressure of 0.5 MPa, a space of 7.056 liters above the water outlet of the water outlet pipe can meet the requirement that the safety valve does not release pressure when heated to 0.8 MPa.

[0035] Calculation of the height from the outlet to the top of the inner tank

[0036] According to the formula, taking an inner tank with a diameter of 31 cm as an example, with a volume of 60 liters and a length of about 45 cm, according to the spherical cap calculation formula S = 2Πrh, where S is 7.056 liters / 4.5 decimeters = 1.568 square decimeters

[0037] H = S / (2πr) = 1.568 / (2 * 3.14 * 3.1 / 2) = 0.16 decimeters = 1.6 centimeters

[0038] That is, the distance from the upper opening of the water outlet pipe of the 60-liter water heater to the top is greater than 1.6 centimeters. After the reserved air is compressed, it can ensure that there will be no water dripping when the inner tank is heated from 5 degrees to 75 degrees.

[0039] In summary: By providing multiple groups of water outlet openings 6 on the surface of the water outlet assembly 5, a certain air compression area is left inside the storage type electric water heater body 1, and a certain amount of air is retained. When the water is heated, its volume expands. However, the design of this structure forces a certain air compression area to be left above the inside of the storage type electric water heater body 1 after it is filled with water. The air itself can be compressed, and the volume of the expanded water can be solved by the volume of the compressed air in the air compression area inside the storage type electric water heater body 1, so that the water volume in the storage type electric water heater body 1 does not need to be discharged through the safety valve pressure relief port, reducing the complaints of electric water heater users caused by the dripping of the safety valve.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An inner tank water outlet pipe of a water storage type electric water heater to prevent water dripping due to pressure relief of a safety valve, characterized in that: The invention comprises a water storage type electric water heater body (1), wherein a water inlet assembly (4) for water inlet is plugged into the bottom surface of the water storage type electric water heater body (1), a water outlet assembly (5) for water discharge from the water storage type electric water heater body (1) is plugged into the bottom end of the water storage type electric water heater body (1), and a water outlet (6) is provided on the surface of the water outlet assembly (5).

2. The inner tank water outlet pipe of a water storage type electric water heater for preventing water dripping from a safety valve during pressure relief according to claim 1, characterized in that: The water storage type electric water heater body (1) comprises a mounting frame (101), a water storage tank (102) being fixedly mounted on the end surface of the mounting frame (101), a controller (103) being arranged on the front side wall of the water storage tank (102), and an electric heating pipe (104) for heating water in the mounting frame (101) being arranged on the inner wall of one side of the mounting frame (101).

3. The inner tank water outlet pipe of a water storage type electric water heater for preventing water dripping from a safety valve during pressure relief according to claim 2, characterized in that: The other side wall of the water storage inner tank (102) is provided with a threaded mounting hole, and a plug (2) is threadedly inserted into the threaded mounting hole. A magnesium rod (3) is provided on the end surface of the plug (2) and located inside the water storage inner tank (102).

4. The inner tank water outlet pipe of a water storage type electric water heater for preventing water dripping due to pressure relief of a safety valve according to claim 2, characterized in that: The water inlet assembly (4) comprises a water inlet pipe (401), the bottom of the water storage liner (102) is plugged with the water inlet pipe (401), the bottom end of the water inlet pipe (401) is fixedly mounted with a water inlet joint (402), and the surface of the water inlet pipe (401) is provided with a water inlet hole (403).

5. The inner tank water outlet pipe of a water storage type electric water heater for preventing water dripping due to pressure relief of a safety valve according to claim 2, characterized in that: The water outlet assembly (5) comprises a water outlet pipe (501), the bottom surface of the water storage inner tank (102) is plugged with the water outlet pipe (501), the bottom end of the water outlet pipe (501) is fixedly mounted with a water outlet joint (502), the top end of the water outlet pipe (501) is plugged with a water outlet pipe seal (503), and a water outlet (6) is provided on the surface of the water outlet pipe (501) and close to the water outlet pipe seal (503).

6. The inner tank water outlet pipe of a water storage type electric water heater for preventing water dripping due to pressure relief of a safety valve according to claim 5, characterized in that: The water outlets (6) are arranged in an array on the surface of the water outlet pipe (501), and the distance between the water outlets (6) and the top of the water outlet pipe (501) is 3-5 centimeters.

Images