Anti-scalding water mixing module and electric water heater

Abstract

The present invention discloses an anti-scalding water mixing module and an electric water heater. The anti-scalding water mixing module comprises: a three-way pipe, the three-way pipe is provided with an interconnected water inlet, a diversion port and a connection port; a connecting water pipe; an anti-scalding module, the anti-scalding module comprises a first tube body and an automatic temperature control component, the first tube body is provided with a water outlet, a hot water inlet and a cold water inlet; the automatic temperature control component comprises a plunger and a temperature sensing driving component, the plunger is provided with a fixing hole and at least one through hole, the through hole is located on one side of the fixing hole, the temperature sensing driving component comprises a cylinder body and a push rod, the push rod is inserted into the cylinder body, a temperature sensing cavity is formed between the push rod and the inside of the cylinder body, the temperature sensing cavity is filled with thermal expansion and contraction materials, and the cylinder body is arranged in the fixing hole. The present invention adopts a mechanical temperature sensing driving component to automatically control the mixing of hot and cold water, improves the reliability of the anti-scalding water mixing module, and improves the reliability of the electric water heater.

Description

Technical Field

[0001] The invention belongs to the technical field of household appliances, and in particular relates to an anti-scalding water mixing module and an electric water heater. Background Art

[0002] At present, electric water heaters are household appliances commonly used in people's daily lives. Electric water heaters are usually equipped with a water tank and an electric heating pipe arranged in the water tank. The motor heat pipe heats the water in the water tank after being energized. At the same time, the water tank is connected to a water inlet pipe and a water outlet pipe. Cold water enters the water tank through the water inlet pipe, and the hot water in the water tank is output from the water outlet pipe.

[0003] In order to avoid scalding the user, the electric water heater in the prior art adds a bypass pipe between the water inlet pipe and the water outlet pipe of the water tank to achieve the mixing of the hot water output from the water outlet pipe and the cold water transported by the bypass pipe, thereby preventing scalding. For example, Chinese Patent No. 200810218710.6 discloses a water heater, in which a solenoid valve is arranged on the bypass pipe, and the switch of the solenoid valve is triggered by a temperature probe arranged on the water outlet pipe.

[0004] However, in actual use, since the solenoid valve is triggered by the temperature detection signal, the probability of failure of the two electronic components is relatively high, thereby reducing the overall reliability of the electric water heater. In view of this, how to design an electric water heater with high reliability is a technical problem to be solved by the present invention. Summary of the invention

[0005] The present invention provides an anti-scalding water mixing module and an electric water heater, which adopt a mechanical temperature sensing driving component to automatically control the mixing of cold and hot water, thereby improving the use reliability of the anti-scalding water mixing module and thus improving the use reliability of the electric water heater.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] In one aspect, the present invention provides an anti-scalding water mixing module, comprising:

[0008] A three-way pipe, wherein the three-way pipe is provided with a water inlet, a diversion port and a connecting port which are interconnected;

[0009] Connect the water pipes;

[0010] The anti-scalding module comprises a first tube body and an automatic temperature control component, the first tube body is provided with a water outlet, a hot water inlet and a cold water inlet; the automatic temperature control component comprises a plunger and a temperature sensing driving component, the plunger is provided with a fixing hole and at least one through hole, the through hole is located on one side of the fixing hole, the temperature sensing driving component comprises a cylinder body and a push rod, the push rod is inserted into the cylinder body, a temperature sensing cavity is formed between the push rod and the inside of the cylinder body, the temperature sensing cavity is filled with a thermal expansion and contraction material, and the cylinder body is arranged in the fixing hole; the plunger is slidably and sealedly arranged in the first tube body, the cylinder body is located in the flow path between the hot water inlet and the water outlet, the thermal expansion and contraction material is used to drive the push rod to move depending on the change of water temperature, and the push rod is used to drive the plunger to slide to control the cold water inlet to selectively connect to the cold water cavity;

[0011] Wherein, the cold water inlet is connected to the diversion port through the connecting water pipe.

[0012] In one embodiment of the present application, a storage table is further included, in which a mounting cavity is formed, and the three-way pipe, the connecting water pipe and the anti-scalding module are arranged in the mounting cavity.

[0013] In one embodiment of the present application, two first external interfaces are provided on the top surface or the bottom surface of the storage table, a first connecting pipe is provided on the connecting port, a second tube body is provided on the first tube body, and the second tube body is connected to the hot water inlet; the first connecting pipe passes through the corresponding first external interface, and the second tube body passes through the corresponding first external interface.

[0014] In one embodiment of the present application, two second external interfaces are provided on the back of the storage table, a second connecting pipe is provided on the water inlet, a third tube body is provided on the first tube body, and the third tube body is connected to the hot water inlet; the second connecting pipe passes through the corresponding second external interface, and the third tube body passes through the corresponding second external interface.

[0015] In one embodiment of the present application, a mounting port is further provided on the first tube body, and the automatic temperature control assembly further includes a sealing plug, a moving part, a rotating part and a first knob;

[0016] The sealing plug is sealingly arranged on the mounting port, the rotating component is rotatably arranged on the sealing plug, the movable component is arranged on the rotating component, the first knob is connected to the rotating component and is used to drive the rotating component to rotate so as to drive the movable component to move relative to the sealing plug, the movable component is arranged opposite to the push rod, and the first knob is arranged outside the storage table.

[0017] In one embodiment of the present application, a valve core for opening and closing the diversion port and / or the connecting port is further provided in the three-way pipe, and a second knob is further provided on the valve core. The valve core is rotatably provided in the three-way pipe, and the second knob is arranged on the outside of the storage table.

[0018] In one embodiment of the present application, the automatic temperature control component also includes: a sealing ring, which is sleeved on the plunger, the sealing ring is clamped between the plunger and the inner tube wall of the first tube body, and the sealing ring is located between the hot water inlet and the cold water inlet.

[0019] In one embodiment of the present application, the automatic temperature control assembly further includes an elastic reset component, and the elastic reset component is used to apply an elastic force to the plunger or the cylinder body in a direction toward the sealing plug.

[0020] In one embodiment of the present application, a first retaining ring is provided on the sealing plug, and a second retaining ring is provided on one end face of the plunger, and the second retaining ring surrounds the outside of the through hole; after the first retaining ring and the second retaining ring are abutted against each other, the edge of the first retaining ring and the edge of the second retaining ring cooperate with each other to form a sealing water-blocking surface.

[0021] In another aspect, the present invention also provides an electric water heater, comprising a water tank having a water inlet pipe and a water outlet pipe, and also comprising the above-mentioned anti-scalding water mixing module; the connecting port of the three-way pipe in the anti-scalding water mixing module is connected to the water inlet pipe, and the hot water inlet of the first pipe body is connected to the water outlet pipe.

[0022] In another aspect, the present invention also provides an electric water heater, comprising a water tank, the water tank having a water inlet pipe and a water outlet pipe, the water inlet pipe being provided with a tee, and also comprising the above-mentioned anti-scalding water mixing module; the second tube body of the anti-scalding water mixing module is connected to the water outlet pipe, and the third tube body of the anti-scalding water mixing module is connected to the tee through a connecting water pipe.

[0023] Compared with the prior art, the advantages and positive effects of the present invention are: by configuring an automatic temperature control component on the first tube body, the temperature sensing driving component in the automatic temperature control component can control the on-off connection between the cold water inlet and the cold water cavity according to the water temperature of the water outlet, thereby realizing automatic adjustment of the mixing amount of cold water and hot water, without the need to additionally configure a temperature sensor and a solenoid valve to control the on-off connection of the cold water. The use of a mechanical automatic temperature control component has better reliability, thereby improving the reliability of the anti-scalding water mixing module to improve the reliability of the electric water heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 It is a structural schematic diagram of an embodiment of an electric water heater of the present invention;

[0026] Figure 2 One of the structural schematic diagrams of an anti-scalding module embodiment of an electric water heater of the present invention;

[0027] Figure 3 for Figure 2 Exploded view of the anti-scalding module;

[0028] Figure 4 for Figure 2 Schematic diagram of the structure of the middle plunger;

[0029] Figure 5 This is a second structural schematic diagram of an embodiment of an anti-scalding module in an embodiment of an electric water heater of the present invention;

[0030] Figure 6 for Figure 5 Middle AA section view;

[0031] Figure 7 This is a third structural schematic diagram of an embodiment of an anti-scalding module in an embodiment of an electric water heater of the present invention;

[0032] Figure 8 for Figure 7 Middle BB section view;

[0033] Fig. 9 One of the structural schematic diagrams of the anti-scalding water mixing module in an embodiment of the electric water heater of the present invention;

[0034] Fig.10 This is a second structural schematic diagram of the anti-scalding water mixing module in an embodiment of the electric water heater of the present invention;

[0035] Fig.11 for Fig.10 One of the partial structural diagrams without the storage table;

[0036] Fig.12 for Fig.10 The second schematic diagram of the partial structure without the storage table;

[0037] Fig.13 for Fig.12 CC section view. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0045] An electric water heater uses electricity as its main energy source. The high-temperature heat generated after power is turned on directly heats the water stored in the electric water heater to prepare hot water.

[0046] An electric water heater usually includes a water tank, an electric heating component, an electronic control device and other components, wherein a water storage cavity is formed in the water tank to store the water to be heated, the electric heating component is inserted into the water storage cavity formed by the water tank, and the electronic control device is used to control the on and off operation of the electric heating component so that the water in the water tank is heated to a set temperature.

[0047] For the water tank of an electric water heater, the water tank generally includes an outer shell and an inner tank, and an insulation layer is formed between the outer shell and the inner tank. Among them, the outer shell is generally made of plastic material to meet the design requirements of beautiful and diverse shapes; the inner tank can be made of metal or plastic according to needs.

[0048] In addition, the insulation layer formed between the outer shell and the inner liner, commonly used insulation materials include: asbestos, sponge, foam plastic, polyurethane foam, etc. In conventional technology, in order to obtain a good insulation effect, the insulation layer is usually formed by foaming.

[0049] Among them, for the inner tank using a metal tank body, the interior of the inner tank is prone to corrosion due to the influence of water quality. For this reason, a magnesium rod is also configured on the water tank, and the magnesium rod is inserted into the water storage cavity inside the water tank.

[0050] Since magnesium is the metal with the lowest potential in the electrochemical series and is physiologically non-toxic, it is ideal for making magnesium rods to protect the inner liner. The size of the magnesium rod is directly related to the length of time the inner liner is protected and the size of the protective effect. The larger the magnesium rod, the better the protective effect and the longer the protection time.

[0051] For the electric heating component, electric heating methods such as electric heating wire, magnetic energy or silicon tube heating can be used to heat the water stored in the water storage cavity.

[0052] Embodiment 1, as Figure 1-Figure 8 As shown, this embodiment provides an electric water heater, which includes a water tank 1000 , and the water tank 1000 has a water inlet pipe 1001 and a water outlet pipe 1002 .

[0053] In order to adjust the outlet water temperature to achieve the purpose of preventing scalding, the electric water heater further includes an anti-scalding water mixing module. The anti-scalding water mixing module includes a three-way pipe 100, an anti-scalding module 200 and a connecting water pipe 300.

[0054] The three-way pipe 100 is provided with a water inlet 101 , a diversion port 102 and a connection port 103 which are interconnected; the water inlet is used to connect to the tap water pipe in the user's home, and the connection port is used to connect to the water inlet pipe 1001 of the water tank 1000 .

[0055] In addition, the anti-scalding module 200 includes: a first tube body 1 and an automatic temperature adjustment component 4 .

[0056] The first pipe body 1 is provided with a water outlet 11, a mounting port 12, a hot water inlet 13 and a cold water inlet 14;

[0057] The automatic temperature control component 4 includes a plunger 41, a sealing plug 42 and a temperature-sensing driving component 43. The plunger 41 is provided with a fixing hole 411 and at least one through hole 412. The through hole 412 is located on one side of the fixing hole 411. The temperature-sensing driving component 43 includes a cylinder body 431 and a push rod 432. The push rod 432 is inserted into the cylinder body 431. A temperature-sensing cavity is formed between the push rod 432 and the inside of the cylinder body 431. The temperature-sensing cavity is filled with thermal expansion and contraction materials (not shown). The cylinder body 431 is set in the fixing hole 411.

[0058] The sealing plug 42 is arranged on the installation port 12, and the plunger 41 is slidably arranged in the first tube body 1. A cold water cavity is formed inside the first tube body 1 between the plunger 41 and the sealing plug 42, and the push rod 432 is arranged opposite to the sealing plug 42; the thermal expansion and contraction material is used to drive the push rod 432 to move depending on the change in the outlet water temperature of the water outlet 11, and the push rod 432 is used to cooperate with the sealing plug 42 to drive the plunger 41 to slide to control the cold water inlet 14 to selectively connect to the cold water cavity, and the cold water inlet is connected to the diversion port through a connecting water pipe 300.

[0059] In this embodiment, the first tube body 1 is provided with an automatic temperature regulating component 4 to automatically adjust the water temperature of the water outlet 11 through the automatic temperature regulating component 4, thereby preventing the hot water output from the water outlet 11 from being too high in temperature and scalding the user.

[0060] During actual assembly, the hot water inlet 13 is connected to the water outlet pipe 1002 of the water tank 1000 through the second tube body 2, and the second tube body 2 is used to input hot water. The cold water inlet 14 is connected to the connecting water pipe 300 through the third tube body 3, and the third tube body 3 is used to input cold water.

[0061] In actual use, hot water enters the first tube body 1 and is output through the water outlet 11 , while the amount of cold water entering the third tube body 3 is controlled by the automatic temperature control component 4 .

[0062] Specifically, when the outlet water temperature of the water outlet 11 is too high, the thermal expansion and contraction material in the cylinder 431 of the temperature-sensing driving component 43 expands and causes the push rod 432 to abut against the sealing plug 42. The push rod 432 uses the force generated by the thermal expansion and contraction material to push the cylinder 431 to drive the plunger 41 to move away from the sealing plug 42, thereby connecting the cold water inlet 14 configured on the first tube body 1 with the cold water cavity formed therein.

[0063] At this time, the cold water introduced by the third tube body 3 enters the cold water cavity, flows out through the through hole 412 and mixes with the hot water flowing into the hot water inlet 13, and finally reduces the water outlet temperature of the water outlet 11, thereby preventing the user from being scalded.

[0064] Since the automatic temperature control component 4 relies on the thermal expansion and contraction material to change its volume according to the temperature change, the push rod 432 is controlled to move, thereby controlling the cold water inlet 14 to selectively communicate with the cold water cavity.

[0065] In some embodiments, for the selection of thermal expansion and contraction materials, the solution of using paraffin for temperature control in conventional technology can be adopted, for example, the paraffin filling material in the paraffin thermostat can be used, and the specific component ratio of the paraffin filling material is not limited here.

[0066] In other embodiments, in order to achieve effective temperature control within the set temperature range, the push rod 432 in the automatic temperature control component 4 is set to have a certain distance from the sealing plug 42 in the initial state, so that more accurate temperature control can be achieved within a certain temperature range. For example: when the outlet water temperature of the water outlet 11 is lower than the first set temperature T1, a gap is formed between the free end of the push rod 432 and the sealing plug 42; when the outlet water temperature of the water outlet 11 is higher than the second set temperature T2, the free end of the push rod 432 abuts against the sealing plug 42.

[0067] Specifically, the temperature value of T2 is greater than the temperature value of T1. In the process of the water outlet 11 of the first tube body 1 outputting hot water, when the water temperature is lower than T1, the push rod 432 is in a completely retracted state. After the outlet water temperature of the water outlet 11 is greater than T1, the push rod 432 gradually extends outward relative to the cylinder body 431 under the action of the thermal expansion and contraction material. Before the outlet water temperature of the water outlet 11 reaches T2, the plunger 41 is in a stationary state to keep the cold water inlet 14 disconnected from the cold water cavity. In this way, it can be ensured that the user uses hot water within the set temperature range, thereby avoiding adding cold water when the hot water temperature is not high, causing the user's water temperature to be too low.

[0068] In actual application, there is no restriction on the values ​​of T1 and T2. It is mainly based on the temperature required by the user's hot water demand in different situations. T2 is used as a temperature trigger value to trigger the use of cold water for mixing to avoid scalding the user.

[0069] For example, in a normal household, T1 can be set to 40 degrees, and T2 can be set to 50 degrees; when the hot water entering the first tube body 1 is below 50 degrees, the cold water in the third tube body 3 will not enter the first tube body 1. When the water temperature in the first tube body 1 exceeds 50 degrees, in order to prevent the hot water from scalding the user, the cold water transported in the third tube body 3 enters the first tube body 1 and mixes with the hot water to reduce the temperature of the water output from the water outlet 11.

[0070] In another embodiment, in order to prevent the water entering the second tube body 2 and the third tube body 3 from influencing each other, the automatic temperature control component 4 further includes: a sealing ring 44, which is sleeved on the plunger 41 and clamped between the plunger 41 and the inner tube wall of the first tube body 1, and the sealing ring 44 is located between the hot water inlet 13 and the cold water inlet 14.

[0071] Specifically, after the plunger 41 is placed into the first tube body 1, the sealing ring 44 will be tightly attached to the inner tube wall of the first tube body 1, and the hot water inlet 13 and the cold water inlet 14 will be separated by the sealing ring 44 to avoid the hot and cold water entering from the hot water inlet 13 and the cold water inlet 14 from affecting each other.

[0072] In some embodiments, the automatic temperature control assembly 4 further includes an elastic reset component 45 , and the elastic reset component 45 is used to apply an elastic force to the plunger 41 or the cylinder 431 in a direction toward the sealing plug 42 .

[0073] Specifically, when the water temperature in the first tube body 1 is high, the push rod 432 extends and abuts against the sealing plug 42 to drive the plunger 41 to move, thereby connecting the cold water inlet 14 with the cold water cavity. When the water temperature in the first tube body 1 decreases, in order to prevent the water outlet temperature of the water outlet 11 from being too low, it is necessary to reduce or cut off the water path between the cold water inlet 14 and the cold water cavity in a timely manner.

[0074] By configuring the elastic reset component 45 and utilizing the elastic force applied by the elastic reset component 45 , when the push rod 432 retracts, the elastic reset component 45 can drive the plunger 41 to reset, thereby reducing or cutting off the water path between the cold water inlet 14 and the cold water cavity.

[0075] In one embodiment, the elastic reset component 45 can be a spring or a spring. Taking a spring as an example, the spring is located in the first tube body 1, one end of the spring abuts against the plunger 41 or the cylinder body 431, and the other end of the spring abuts against the first tube body 1.

[0076] Taking the spring against the cylinder 431 as an example, the spring can apply a spring force to the cylinder 431, and the direction of the spring force is toward the sealing plug 42. When the temperature of the water outlet 11 is higher than T2 and hot and cold water need to be mixed, the push rod 432 is against the sealing plug 42 to drive the cylinder 431 and the plunger 41 to move, thereby compressing the spring. When the temperature of the water outlet 11 is lower than T2, the push rod 432 retracts, and the spring drives the cylinder 431 to drive the plunger 41 to move in the opposite direction and reset, so as to cut off the flow path between the cold water inlet 14 and the cold water cavity.

[0077] In some embodiments, in order to facilitate the installation of the spring in the first tube body 1, a limit plate 15 is provided inside the first tube body 1 near the water outlet 11, and the other end of the spring abuts against the limit plate 15. Specifically, the limit plate 15 can support the spring, so that the spring is squeezed between the limit plate 15 and the plunger 41 or the cylinder body 431.

[0078] The limiting plate 15 may be an annular structure, which can provide good support for the spring on one hand, and can reduce the obstruction to the water flow on the other hand, to ensure smooth water flow from the water outlet 11 .

[0079] In addition, a guide column 433 extending toward the water outlet 11 can be provided on the cylinder body 431, and the spring is sleeved on the guide column 433. The guide column 433 can be used to support and shape the spring, thereby ensuring that the posture of the spring will not be skewed when the spring is compressed, thereby improving assembly reliability.

[0080] In a preferred embodiment, in order to more reliably control the on-off of the flow path between the cold water inlet 14 and the cold water cavity by the plunger 41, a first retaining ring 421 is provided on the sealing plug 42, and a second retaining ring 413 is provided on one end face of the plunger 41, and the second retaining ring 413 surrounds the outside of the through hole 412; after the first retaining ring 421 and the second retaining ring 413 are abutted against each other, the edge of the first retaining ring 421 and the edge of the second retaining ring 413 cooperate with each other to form a sealed water-blocking surface.

[0081] Specifically, when it is necessary to cut off the flow path between the cold water inlet 14 and the cold water cavity, the first retaining ring 421 and the second retaining ring 413 are pressed against each other, and the connection portion formed between the two constitutes a sealing water-blocking surface to cut off the flow path between the cold water inlet 14 and the cold water cavity. When it is necessary to mix the cold water and hot water entering through the cold water inlet 14, the plunger 41 moves to make the second retaining ring 413 move away from the first retaining ring 421, thereby making the flow path between the cold water inlet 14 and the cold water cavity conductive.

[0082] Similarly, in order to better prevent scalding, in one embodiment, a step surface 16 can be further provided in the first tube body 1, and the step surface 16 is located between the water outlet 11 and the hot water inlet 13; a third retaining ring is provided on one end surface of the plunger 41, and a water flow gap is formed between the third retaining ring and the step surface 16.

[0083] Specifically, when mixing of hot and cold water is required, the plunger 41 moves away from the sealing plug 42, thereby reducing the distance of the water flow interval formed between the third retaining ring and the step surface 16, so as to reduce the outflow of hot water, thereby being able to adjust the water temperature more quickly and efficiently to meet the anti-scalding requirements.

[0084] Embodiment 2, as Figure 9-13 As shown, based on the above-mentioned embodiment 1, in order to facilitate the user or operator to adjust the temperature that triggers water mixing, the automatic temperature adjustment component further includes a moving part 422 and a rotating part 423.

[0085] The rotating component 423 is rotatably disposed on the sealing plug, and the moving component 422 is disposed on the rotating component 423. The rotating component 423 rotates to drive the moving component 422 to move relative to the sealing plug. The moving component 422 is arranged opposite to the push rod.

[0086] Specifically, during use, when the user needs to adjust the mixed water temperature, the user can rotate the rotating component 423 to drive the moving component 422 to approach or move away from the push rod, thereby changing the initial distance between the moving component 422 and the push rod, and then changing the degree of mixing of cold and hot water to achieve the purpose of adjusting the mixed water temperature.

[0087] Similarly, in some special cases, when the user needs high-temperature water without mixing the water, the rotating part 423 is rotated to the maximum external stroke so that the push rod 432 in the extended state does not contact the moving part 422, thereby achieving high-temperature water output without mixing the water, which is more conducive to improving the user's requirements for water temperature diversity.

[0088] There are many ways for the rotating part 423 to drive the moving part 422 to move, for example: the rotating part 423 is provided with an internal thread, and the moving part 422 is correspondingly provided with an external thread, and the moving part 422 is connected to the rotating part 423 through the cooperation of the internal and external threads. By rotating the rotating part 423, under the action of the internal and external threads, the moving part 422 is reciprocated relative to the sealing plug.

[0089] In a preferred embodiment, a storage table 5 is further included, in which a mounting cavity is formed, and a three-way pipe 100, a connecting water pipe 300 and an anti-scalding module 200 are arranged in the mounting cavity.

[0090] Specifically, for the anti-scalding water mixing module, a modular design is achieved by configuring a storage table 5 to place the three-way pipe 100, the connecting water pipe 300 and the anti-scalding module 200. At the same time, the storage table 5 can be directly installed on the wall of the user's home away from the water tank 1000. During use, the storage table 5 can also facilitate users to place items to enrich its functionality.

[0091] When connecting to the water tank of the electric water heater and the water pipes in the user's home, the connection on the pipeline can be completed by opening corresponding external interfaces on the storage table 5. For example, two first external interfaces are provided on the top surface or the bottom surface of the storage table 5, and a first connecting pipe is provided on the connecting port, and a second pipe body is provided on the first pipe body, and the second pipe body is connected to the hot water inlet; the first connecting pipe passes through the corresponding first external interface, and the second pipe body passes through the corresponding first external interface.

[0092] Similarly, two second external interfaces are provided on the back of the storage table 5, a second connecting pipe is provided on the water inlet, a third tube body is provided on the first tube body, and the third tube body is connected to the hot water inlet; the second connecting pipe passes through the corresponding second external interface, and the third tube body passes through the corresponding second external interface.

[0093] In addition, in order to facilitate the user to rotate the rotating component 423, a first knob 61 is also provided on the rotating component 423, which is externally connected to the storage table 5. The first knob 61 is connected to the rotating component 423 and is used to drive the rotating component 423 to rotate. When the user needs to adjust the mixed water temperature during use, the outlet water temperature can be conveniently adjusted by rotating the first knob 61.

[0094] In some embodiments, a valve core 7 for opening and closing the diversion port and / or the connection port is further provided in the three-way tube 100, and a second knob 62 is further provided on the valve core 7. The valve core 7 is rotatably provided in the three-way tube 100, and the second knob 62 is arranged on the outside of the storage table 5.

[0095] Specifically, a valve core 7 is disposed in the three-way pipe 100, and the valve core 7 can be used to switch the diverter port and / or the connecting port according to functional requirements. Taking the valve core 7 as an example of the switching operation of the diverter port, when the user does not need to mix hot and cold water, the second knob 62 is turned to rotate the valve core 7, so that the diverter port is closed through the valve core 7. The specific structural form of the valve core 7 can adopt a valve structure such as a conventional stop valve or a ball valve, which is not limited or elaborated here.

[0096] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A scalding prevention water mixing module, characterized in that: include: A three-way pipe, wherein the three-way pipe is provided with a water inlet, a diversion port and a connecting port which are interconnected; Connect the water pipes; The anti-scalding module comprises a first tube body and an automatic temperature control component, the first tube body is provided with a water outlet, a hot water inlet and a cold water inlet; the automatic temperature control component comprises a plunger and a temperature sensing driving component, the plunger is provided with a fixing hole and at least one through hole, the through hole is located on one side of the fixing hole, the temperature sensing driving component comprises a cylinder body and a push rod, the push rod is inserted into the cylinder body, a temperature sensing cavity is formed between the push rod and the inside of the cylinder body, the temperature sensing cavity is filled with a thermal expansion and contraction material, the cylinder body is arranged in the fixing hole; the plunger is slidably and sealedly arranged in the first tube body, the cylinder body is located in the flow path between the hot water inlet and the water outlet, the thermal expansion and contraction material is used to drive the push rod to move depending on the change of water temperature, and the push rod is used to drive the plunger to slide to control the cold water inlet to selectively connect to the cold water cavity; Wherein, the cold water inlet is connected to the diversion port through the connecting water pipe; The first tube body is also provided with a mounting port, and the automatic temperature control assembly further comprises a sealing plug, a moving part, a rotating part and a first knob; the sealing plug is sealingly arranged on the mounting port, the rotating part is rotatably arranged on the sealing plug, the moving part is arranged on the rotating part, the first knob is connected to the rotating part and is used to drive the rotating part to rotate so as to drive the moving part to move relative to the sealing plug, and the moving part is arranged opposite to the push rod; the cold water cavity is formed inside the first tube body between the plunger and the sealing plug; The sealing plug is provided with a first retaining ring, and one end surface of the plunger is provided with a second retaining ring, and the second retaining ring surrounds the outside of the through hole; after the first retaining ring and the second retaining ring are abutted together, the edge of the first retaining ring and the edge of the second retaining ring cooperate with each other to form a sealing water-blocking surface; when it is necessary to cut off the flow path between the cold water inlet and the cold water cavity, the first retaining ring and the second retaining ring abut together and form a sealing water-blocking surface at the formed connection portion to cut off the flow path between the cold water inlet and the cold water cavity; The rotating member is configured to rotate to an outer maximum stroke so that the push rod in an extended state does not contact the moving member.

2. The anti-scalding water mixing module according to claim 1, characterized in that: It also includes a storage table, in which a mounting cavity is formed, and the three-way pipe, the connecting water pipe and the anti-scalding module are arranged in the mounting cavity.

3. The anti-scalding water mixing module according to claim 2, characterized in that: Two first external interfaces are provided on the top surface or the bottom surface of the storage table, a first connecting pipe is provided on the connecting port, a second tube body is provided on the first tube body, and the second tube body is connected to the hot water inlet; the first connecting pipe passes through the corresponding first external interface, and the second tube body passes through the corresponding first external interface.

4. The anti-scalding water mixing module according to claim 2, characterized in that: Two second external interfaces are provided on the back of the storage table, a second connecting pipe is provided on the water inlet, a third tube body is provided on the first tube body, and the third tube body is connected to the hot water inlet; the second connecting pipe passes through the corresponding second external interface, and the third tube body passes through the corresponding second external interface.

5. The anti-scalding water mixing module according to claim 2, characterized in that: The first knob is arranged outside the storage platform.

6. The anti-scalding water mixing module according to claim 2, characterized in that: The three-way pipe is also provided with a valve core for opening and closing the diversion port and / or the connection port, and the valve core is also provided with a second knob. The valve core is rotatably arranged in the three-way pipe, and the second knob is arranged outside the storage table.

7. The anti-scalding water mixing module according to any one of claims 1 to 6, characterized in that: The automatic temperature control component further comprises: a sealing ring, which is sleeved on the plunger, clamped between the plunger and the inner tube wall of the first tube body, and located between the hot water inlet and the cold water inlet.

8. The anti-scalding water mixing module according to claim 1, characterized in that: The automatic temperature control assembly further comprises an elastic reset component, and the elastic reset component is used to apply an elastic force to the plunger or the cylinder body in a direction toward the sealing plug.

9. An electric water heater, comprising a water tank, the water tank having a water inlet pipe and a water outlet pipe, characterized in that: It also includes the anti-scalding water mixing module according to any one of claims 1 to 8; the connecting port of the three-way pipe in the anti-scalding water mixing module is connected to the water inlet pipe, and the hot water inlet of the first pipe body is connected to the water outlet pipe.

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