Water heater with pressure relief structure

Abstract

The utility model relates to a water heater with a pressure relief structure, which comprises a machine body, an inner cavity, a heat exchange device, a water tank pressure relief pipe and a mounting pipe part, the inner cavity is arranged in the machine body; the heat exchange device is arranged in an inner cavity of the machine body; the water tank pressure relief pipe is used for releasing the inner cavity pressure of the machine body, when the inner cavity air pressure is too high, the water tank pressure relief pipe is communicated with outside air and plays a role in balancing the air pressure, and when the inner cavity water level is too high, inner cavity overflow water is discharged from the water tank pressure relief pipe; the mounting pipe part is used for assisting in mounting the water tank pressure relief pipe into the inner cavity of the machine body, and the water tank pressure relief pipe is mounted into the inner cavity of the machine body from the outside of the machine body through the mounting pipe part, so that the water tank pressure relief pipe is convenient to assemble; one end of the liquid water inlet and outlet pipe penetrates through the bottom wall of the inner cavity and forms a water inlet end, and the other end of the liquid water inlet and outlet pipe penetrates through the bottom wall of the inner cavity and forms a water outlet end. The installation pipe part used for assisting in installing the water tank pressure relief pipe is arranged on the inner cavity of the water heater, the structure that the water tank pressure relief pipe is fixed to the inner cavity of the water heater is omitted, and the problem that some existing water heaters are not provided with overflow structures is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, and particularly relates to a water heater with a pressure relief structure. Background Art

[0002] Chinese Patent No. ZL201910819818.9 discloses a multifunctional water heater, which includes a water tank. A heating device is installed in the water tank. A water outlet pipe and a sewage pipe are connected to the water tank. A heat exchange water pipe is also installed in the water tank. The water outlet end of the heat exchange water pipe is connected to the water outlet pipe. A cold water inlet pipe and a water tank inlet pipe are installed on the water tank. The cold water inlet pipe is connected to the water inlet end of the heat exchange water pipe. The water tank inlet pipe is connected to the inner cavity of the water tank. The water heater of this structure realizes temperature rise by heat exchange between the water heated in the water tank and the water in the heat exchange water pipe. By heating with the heating device, chemical reactions occur to metal ions in the water in the water tank. Without replenishing water to the water tank, the water in the water tank is continuously circulated, so that the water in the water tank gradually becomes pure water. After long-term use, scale will no longer be generated and covered on the heating device, enabling the heat of the heating device to be transferred out faster and improving the heating speed of the water heater.

[0003] An exhaust port is opened at the top of the water tank, and an exhaust valve is installed on the exhaust port. Since a very small amount of steam is generated when the water in the water tank is heated and raised in temperature, the water vapor in the inner cavity of the water tank can be discharged through the exhaust valve, avoiding the problem of expansion and explosion due to excessive pressure in the inner cavity of the water tank; the exhaust valve can only discharge the water vapor in the water tank. However, when the liquid level in the water tank is relatively high, it is difficult to discharge the overflow water.

[0004] In addition, some sensors are arranged on one side of the inner tank of the water heater, and the installation is rather troublesome. Content of the Utility Model

[0005] The purpose of the utility model is to provide a water heater with a pressure relief structure. By providing an installation pipe part for assisting in installing a water tank pressure relief pipe on the inner cavity of the water heater and canceling the structure of fixing the water tank pressure relief pipe on the inner cavity of the water heater, the problem that some existing water heaters do not have an overflow structure is solved.

[0006] The purpose of the utility model is achieved as follows:

[0007] A water heater with a pressure relief structure includes a body and an inner cavity, and further includes a heat exchange device, a water tank pressure relief pipe and an installation pipe part;

[0008] The inner cavity is arranged in the body and is used for storing liquid;

[0009] The heat exchange device is arranged in the inner cavity of the body and is used for heating the liquid in the inner cavity;

[0010] The water tank pressure relief pipe is used for discharging the overflow water from the overflow pipe when the water level in the inner cavity is too high; and when the air pressure in the inner cavity is too high, since the overflow pipe is connected to the outside air, the pressure in the inner cavity of the body is released, so that the open design of the water tank does not bear too much pressure, and the service life of the water tank is extended by 2 times compared with that of the traditional electric water heater;

[0011] The installation pipe part is used to assist in installing the water tank pressure relief pipe into the inner cavity of the body. The water tank pressure relief pipe is installed from outside the body to the inner cavity of the body through the installation pipe part, which is convenient for the assembly of the water tank pressure relief pipe;

[0012] The inner cavity is provided with a liquid inlet and outlet pipe. One end of the liquid inlet and outlet pipe penetrates the bottom wall of the inner cavity to form an inlet end, and the other end of the liquid inlet and outlet pipe penetrates the bottom wall of the inner cavity to form an outlet end.

[0013] A part of the installation pipe part is located outside the body, and the water tank pressure relief pipe is inserted into the inner cavity of the body from the installation pipe part outside the body.

[0014] One end of the installation pipe part is inserted into the inner cavity of the body; or, one end of the installation pipe part is fixed on the outer side of the bottom of the body.

[0015] An installation cavity communicating with the inner cavity is provided on the installation pipe part, and the water tank pressure relief pipe is inserted into the inner cavity along the installation cavity.

[0016] An installation position for fixing the installation pipe part is provided on the bottom wall of the inner cavity of the body; one end of the installation pipe part is inserted into the installation position; or, one end of the installation pipe part abuts against the outside of the installation position.

[0017] A sealing connection part is provided between the installation pipe part and the installation position, so that the installation pipe part and the installation position are sealed and matched to prevent the liquid in the inner cavity from leaking from the gap between the installation pipe part and the installation position.

[0018] The heat exchange device includes a cover body and a heating pipe. The heating pipe is arranged in the cover body so as to form a heating chamber in the cover body;

[0019] A first pipe is provided on the inner cavity and is located outside the cover body;

[0020] A second pipe is provided on the cover body. The second pipe is arranged in the cover body and is spirally wound around the outer peripheral side of the heating pipe;

[0021] One end of the first pipe is connected to the second pipe to form a liquid inlet and outlet pipe for the liquid to flow from a low place to a high place, extending the heating travel of the liquid flow. The liquid flows to a high place for heating and then flows from a high place to a low place for heating and discharging water.

[0022] The inner cavity is provided with a first support pipe part for installing a liquid sensor.

[0023] The inner cavity is provided with a second support pipe part for installing a temperature sensor.

[0024] Remove the installation of the liquid sensor and the temperature sensor on one side of the inner tank to facilitate the installation and maintenance of the sensors. The sensors and the second support pipe part are of a hollow structure to facilitate threading of wires. Sealing structures are provided at the tops of the first support pipe part and the second support pipe part to prevent the liquid in the inner cavity from entering the first support pipe part and the second support pipe part.

[0025] A water replenishing pipe is provided on the body. One end of the water replenishing pipe is provided with a switch valve in an open state and a closed state. A four-way valve is provided between the water inlet end of the liquid inlet and outlet water pipe and the switch valve. A thermostatic mixing valve is provided between the four-way valve and the water outlet end of the liquid inlet and outlet water pipe.

[0026] The beneficial effects of the present utility model are as follows:

[0027] A water replenishing pipe is provided on the body. When the liquid level in the inner cavity is too low, the switch valve opens, and the water replenishing pipe replenishes water into the inner cavity.

[0028] The thermostatic mixing valve opens, and cold water and hot water are mixed. When the thermostatic mixing valve is closed, only hot water flows out, meeting the user's bathing water demand.

[0029] Through the installation pipe part for assisting in installing the water tank pressure relief pipe provided on the inner cavity of the water heater, the structure of fixing the water tank pressure relief pipe on the inner cavity of the water heater is removed, solving the problem that some existing water heaters do not have an overflow structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the internal structure of the water heater in an embodiment of the present utility model.

[0031] Figure 2 It is a schematic diagram of the plane cross-sectional structure of the water heater in an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The present utility model will be further described below with reference to the drawings and embodiments.

[0033] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0034] See Figure 1 And Figure 2 , a water heater with a pressure relief structure, including a body 1 and an inner cavity 2, further including a heat exchange device 3, a water tank pressure relief pipe 4, and an installation pipe part 5;

[0035] The inner cavity 2 is arranged in the body 1 and is used for storing liquid;

[0036] The heat exchange device 3 is disposed in the inner cavity 2 of the body 1 and is used to heat the liquid in the inner cavity 2;

[0037] The water tank pressure relief pipe 4 is used to release the pressure in the inner cavity 2 of the body 1;

[0038] The installation pipe portion 5 is used to assist in installing the water tank pressure relief pipe 4 into the inner cavity 2 of the body 1;

[0039] The inner cavity 2 is provided with a liquid inlet and outlet pipe. One end of the liquid inlet and outlet pipe penetrates the bottom wall of the inner cavity 2 to form a water inlet end 2.1, and the other end of the liquid inlet and outlet pipe penetrates the bottom wall of the inner cavity 2 to form a water outlet end 2.2.

[0040] A part of the installation pipe portion 5 is located outside the body 1, and the water tank pressure relief pipe 4 is inserted into the inner cavity 2 of the body 1 from the installation pipe portion 5 outside the body 1.

[0041] One end of the installation pipe portion 5 is inserted into the inner cavity 2 of the body 1; alternatively, one end of the installation pipe portion 5 is fixed on the outer side of the bottom of the body 1.

[0042] The installation pipe portion 5 is provided with an installation cavity communicating with the inner cavity 2, and the water tank pressure relief pipe 4 is inserted into the inner cavity 2 along the installation cavity.

[0043] An installation position for fixing the installation pipe portion 5 is provided on the bottom wall of the inner cavity 2 of the body 1; one end of the installation pipe portion 5 is inserted into the installation position; alternatively, one end of the installation pipe portion 5 abuts against the outside of the installation position.

[0044] Specifically, the installation position is a threaded hole, one end of the installation pipe portion 5 is provided with an external thread end, and the installation pipe portion 5 is threadedly engaged and fixed to the bottom wall of the inner cavity 2 of the body 1;

[0045] Alternatively, one end of the installation pipe portion 5 is inserted into the installation position on the bottom wall of the inner cavity 2 and abuts against the outside of the installation position by welding, and the weld forms a sealed connection portion between the installation pipe portion 5 and the installation position.

[0046] A sealed connection portion is provided between the installation pipe portion 5 and the installation position to enable the installation pipe portion 5 and the installation position to be sealed and matched.

[0047] Specifically, a sealing ring is sleeved on the installation pipe portion 5 and inserted into the installation position on the bottom wall of the inner cavity 2, and the sealing ring seals the gap between the installation pipe portion 5 and the installation position.

[0048] The heat exchange device 3 includes a cover body 6 and a heating pipe 7. The heating pipe 7 is disposed in the cover body 6 so that a heating chamber is formed in the cover body 6;

[0049] A first pipe 8 located outside the cover body 6 is provided on the inner cavity 2;

[0050] A second pipe 9 is provided on the cover body 6. The second pipe 9 is arranged inside the cover body 6 and is spirally wound around the outer peripheral side of the heating pipe 7.

[0051] Specifically, the bottom of the cover body 6 can be supported on the bottom wall of the inner cavity 2 through a support block structure.

[0052] One end of the first pipe 8 is connected to the second pipe 9 to form a liquid inlet and outlet pipe for liquid to flow from a lower place to a higher place.

[0053] A first support pipe portion 10 for installing a liquid sensor is provided in the inner cavity 2.

[0054] A second support pipe portion 11 for installing a temperature sensor is provided in the inner cavity 2.

[0055] Specifically, mounting holes for installing the first support pipe portion 10 and the second support pipe portion 11 are provided on the bottom wall of the inner cavity 2.

[0056] A water replenishing pipe 12 is provided on the machine body 1. A switch valve 13 in an open state and a closed state is provided at one end of the water replenishing pipe 12. A four-way valve 14 is provided between the water inlet end 2.1 of the liquid inlet and outlet pipe and the switch valve 13. A constant temperature mixing valve 15 is provided between the four-way valve 14 and the water outlet end 2.2 of the liquid inlet and outlet pipe.

[0057] Specifically, the switch valve 13 is an electromagnetic valve.

[0058] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and 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 thus should not be construed as a limitation to the present utility model.

[0059] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0060] In the present utility model, unless otherwise clearly stipulated and defined, the terms "installation", "connection", "linkage", "fixation" and the like shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art

[0061] it is possible to understand the specific meanings of the above terms in the present utility model according to specific circumstances.

[0062] In the present utility model, unless otherwise clearly stipulated and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher level than the second feature in terms of horizontal height. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower level than the second feature in terms of horizontal height.

[0063] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0064] It should also be understood that when interpreting the connection relationship or positional relationship of elements, although not clearly described, the connection relationship and positional relationship are interpreted to include an error range, and this error range should be within the acceptable deviation range of a specific value determined by those skilled in the art. For example, "about", "approximate" or "substantially" may mean within one or more standard deviations, which are not defined herein.

[0065] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0066] The above embodiments only represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

[0067] The above is the preferred solution of the present utility model, which shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A water heater with a pressure relief structure, comprising a body (1) and an inner cavity (2), characterized in that: It also includes a heat exchange device (3), a water tank pressure relief pipe (4) and an installation pipe part (5); The inner cavity (2) is arranged in the body (1) and is used to store liquid; The heat exchange device (3) is arranged in the inner cavity (2) of the body (1) and is used to heat the liquid in the inner cavity (2); The water tank pressure relief pipe (4) is used to release the pressure in the inner cavity (2) of the body (1); The installation pipe portion (5) is used to assist the water tank pressure relief pipe (4) in being installed into the inner cavity (2) of the machine body (1); The inner cavity (2) is provided with a liquid inlet and outlet pipe, one end of the liquid inlet and outlet pipe penetrates the bottom wall of the inner cavity (2) to form a water inlet end (2.1), and the other end of the liquid inlet and outlet pipe penetrates the bottom wall of the inner cavity (2) to form a water outlet end (2.2).

2. The water heater with a pressure relief structure according to claim 1, characterized in that: Part of the installation pipe part (5) is located outside the machine body (1), and the water tank pressure relief pipe (4) is inserted from the installation pipe part (5) outside the machine body (1) into the inner cavity (2) of the machine body (1).

3. The water heater with a pressure relief structure according to claim 1, characterized in that: One end of the installation tube (5) is inserted into the inner cavity (2) of the machine body (1); or, one end of the installation tube (5) is fixed on the outer side of the bottom of the machine body (1).

4. The water heater with a pressure relief structure according to claim 1, characterized in that: The installation pipe portion (5) is provided with an installation cavity communicating with the inner cavity (2), and the water tank pressure relief pipe (4) is inserted into the inner cavity (2) along the installation cavity.

5. The water heater with a pressure relief structure according to claim 1, characterized in that: A mounting position for fixing the mounting tube (5) is provided on the bottom wall of the inner cavity (2) of the machine body (1); one end of the mounting tube (5) is inserted into the mounting position; or one end of the mounting tube (5) abuts against the outside of the mounting position.

6. The water heater with a pressure relief structure according to claim 5, characterized in that: A sealing connection portion is provided between the installation pipe portion (5) and the installation position, so that the installation pipe portion (5) and the installation position are in sealing cooperation.

7. The water heater with a pressure relief structure according to claim 1, characterized in that: The heat exchange device (3) comprises a cover body (6) and a heating tube (7), wherein the heating tube (7) is arranged inside the cover body (6) so that a heating chamber is formed inside the cover body (6); The inner cavity (2) is provided with a first pipe (8) located outside the cover body (6); The cover body (6) is provided with a second pipe (9), the second pipe (9) is arranged inside the cover body (6), and the second pipe (9) is spirally wound and arranged on the outer peripheral side of the heating pipe (7); One end of the first pipe (8) is connected to the second pipe (9) to form a liquid inlet and outlet pipe for the liquid to flow from a lower place to a higher place, and then from a higher place to a lower place.

8. The water heater with a pressure relief structure according to claim 1, characterized in that: The inner cavity (2) is provided with a first supporting tube portion (10) for mounting a liquid sensor.

9. The water heater with a pressure relief structure according to claim 1, characterized in that: The inner cavity (2) is provided with a second supporting tube portion (11) for mounting a temperature sensor.

10. The water heater with a pressure relief structure according to claim 1, characterized in that: The machine body (1) is provided with a water supply pipe (12), one end of which is provided with a switch valve (13) which can be in an open state or a closed state, a four-way valve (14) is provided between the water inlet end (2.1) of the liquid inlet and outlet pipes and the switch valve (13), and a constant temperature mixing valve (15) is provided between the four-way valve (14) and the water outlet end (2.2) of the liquid inlet and outlet pipes.

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