Valve device and gas water heater

Abstract

The utility model discloses a valve device and gas water heater relates to water heater technical field, wherein, valve device includes valve body, fixed sleeve, first barrier piece and valve core subassembly, and valve body is equipped with valve cavity and with the water inlet channel of valve cavity communication, first water outlet channel, second water outlet channel and mounting port, and first water outlet channel has first water inlet, and second water outlet channel has second water inlet, fixed sleeve is sealed and is installed in mounting port, and first barrier piece is fixed and is established in fixed sleeve, and is installed to valve cavity in via mounting port, valve core subassembly is installed in fixed sleeve, and valve core subassembly includes first valve core and second valve core, and first valve core and first barrier piece rotate and cooperate to be used for adjusting the water flow of first water inlet, and second valve core rotates in valve cavity to be used for adjusting the water flow of second water inlet. The utility model technical scheme can improve the water temperature fluctuation, promote the constant temperature performance, can effectively reduce the assembly difficulty simultaneously, promotes the assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, and in particular to a valve device and a gas water heater. Background Technology

[0002] As people's living standards continue to improve, their pursuit of bathing comfort is increasing. Gas water heaters, with their fast heating speed and large water volume, have become the preferred type of water heater for many users. However, gas water heaters can experience significant temperature fluctuations when the water volume fluctuates, such as sudden changes in water temperature, and the water temperature fluctuating considerably when the water is turned off and then on again, resulting in the water being hot initially and then cold later.

[0003] In related technologies, valve devices are installed in hot water systems to solve the problem of large fluctuations in outlet water temperature. However, the valve body, shielding parts, and valve core of these valve devices are inconvenient to install. Utility Model Content

[0004] The main purpose of this utility model is to propose a valve device that aims to reduce the assembly difficulty of the valve device and improve production efficiency.

[0005] To achieve the above objectives, the valve device proposed in this utility model includes:

[0006] The valve body is provided with a valve cavity and an inlet channel, a first outlet channel, a second outlet channel and an installation port communicating with the valve cavity. The first outlet channel has a first water inlet communicating with the valve cavity, and the second outlet channel has a second water inlet communicating with the valve cavity.

[0007] A retaining sleeve is installed in a sealed manner at the mounting port;

[0008] The first blocking member is fixedly disposed in the fixing sleeve and installed into the valve cavity through the mounting port; and

[0009] A valve core assembly is installed on the fixed sleeve. The valve core assembly includes a first valve core and a second valve core disposed in the valve cavity. The first valve core rotates with the first shielding member to adjust the water flow rate of the first water inlet. The second valve core rotates in the valve cavity to adjust the water flow rate of the second water inlet.

[0010] In one embodiment of this application, the first shielding member and the fixing sleeve are an integral structure.

[0011] In one embodiment of this application, the first shielding member is provided with a water inlet, and when the fixing sleeve is installed to the mounting port, the first water inlet communicates with the valve cavity through the water inlet;

[0012] The first valve core rotates in conjunction with the first shielding member to block or open the water inlet.

[0013] In one embodiment of this application, the first water inlet is located on the peripheral wall surface of the valve cavity;

[0014] The first shielding member is a cylindrical body, and the outer peripheral surface of the first shielding member is tightly fitted with the peripheral wall surface of the valve cavity. The water inlet penetrates the inner and outer peripheral surfaces of the first shielding member.

[0015] The first valve core is located inside the first shielding member and rotates with the inner circumferential surface of the first shielding member to block or open the water inlet.

[0016] In one embodiment of this application, the water inlet extends circumferentially along the first blocking member; the first valve core is a stop block, and the outer peripheral surface of the first valve core cooperates with the inner peripheral surface of the first blocking member to block or open the water inlet.

[0017] In one embodiment of this application, the fixed sleeve is provided with an assembly hole; the valve core assembly further includes a rotating shaft axially connecting the first valve core and the second valve core, the end of the rotating shaft opposite to the second valve core is sealed and fitted into the assembly hole, and extends out of the assembly hole for driving connection with the drive assembly.

[0018] In one embodiment of this application, the mounting port is located at one axial end of the valve cavity, the mounting port is coaxially arranged with the valve cavity, and the rotating shaft is coaxially arranged with the valve cavity.

[0019] In one embodiment of this application, a second shielding member is provided in the valve body. The second shielding member is located at one end of the valve cavity that is axially opposite to the mounting port, and the second shielding member is provided with a second water inlet.

[0020] The second valve core rotates in conjunction with the second shielding member to block or open the second water inlet.

[0021] In one embodiment of this application, the second shielding member is a baffle; the periphery of the baffle is connected to the peripheral wall of the valve cavity, and the second water inlet is formed by an opening in the baffle; or, the baffle has a notch to surround the peripheral wall of the valve cavity to form the second water inlet;

[0022] The second valve core is a baffle, and the axial end face of the baffle is rotatably engaged with the axial end face of the baffle plate. The baffle has a flow port that communicates with the valve cavity. When the baffle rotates, it can drive the flow port to move relative to the second water inlet, so as to adjust the overlap area between the flow port and the second water inlet.

[0023] In one embodiment of this application, the second shielding member is provided with a mounting hole, and the mounting hole is coaxially arranged with the valve cavity;

[0024] The second valve core has a protruding shaft on its axial end face away from the first valve core. When the valve core assembly is inserted into the valve cavity through the mounting port, the protruding shaft rotates and engages with the mounting hole.

[0025] In one embodiment of this application, the inner wall of the valve cavity is provided with a first limiting stop, and the outer wall of the fixed sleeve is provided with a second limiting stop;

[0026] The first limiting stop is used to limit and stop the second limiting stop when the fixed sleeve is installed to the installation port.

[0027] To achieve the above objectives, this application also provides a gas water heater, including an inlet pipe, an outlet pipe, a heat exchanger, and the aforementioned valve device. The inlet channel is connected to the inlet pipe, and one of the first outlet channel and the second outlet channel is connected to the inlet end of the heat exchanger, while the other is connected to the outlet pipe.

[0028] In this utility model's valve device, the valve body is provided with a valve cavity and an inlet channel, a first outlet channel, and a second outlet channel communicating with the valve cavity. The first outlet channel has a first water inlet, and the second outlet channel has a second water inlet. A rotatable valve core assembly is provided in the valve cavity. The valve core assembly has a first valve core and a second valve core spaced apart. The first valve core rotates and cooperates with a first blocking member in the valve cavity to adjust the water flow rate of the first water inlet. The second valve core rotates in the valve cavity to adjust the water flow rate of the second water inlet, thereby realizing the water distribution function of the first outlet channel and the second outlet channel. When the valve device of this embodiment is applied to a gas water heater, it can adjust the water flow rate of the first outlet channel and the second outlet channel according to different operating conditions of the gas water heater, thereby improving water temperature fluctuations and enhancing constant temperature performance.

[0029] In addition, the valve body is provided with an installation port that communicates with the valve cavity. By fixing the first shielding member to the fixed sleeve and installing the valve core assembly to the fixed sleeve, during assembly, the first shielding member and the valve core assembly can be installed on the fixed sleeve outside the valve body to form a whole assembly. Thus, the operator can pick up the whole assembly by holding the fixed sleeve and insert it into the valve cavity through the installation port to complete the assembly. This effectively reduces the assembly difficulty and improves the assembly efficiency. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of an embodiment of the valve device of this utility model;

[0032] Figure 2 This is an exploded view of an embodiment of the valve device of this utility model;

[0033] Figure 3 This is a schematic diagram of the cooperative structure of the valve core assembly, the first shielding member, and the fixing sleeve in the valve device of this utility model;

[0034] Figure 4 This is a schematic diagram of the structure of the first shielding member and the fixing sleeve in the embodiment of this utility model;

[0035] Figure 5 This is a cross-sectional view of an embodiment of the valve device of this utility model;

[0036] Figure 6 This is an assembly diagram of the valve body, valve core assembly, and fixing sleeve in an embodiment of this utility model;

[0037] Figure 7 This is an axial view of the valve body in an embodiment of the present invention;

[0038] Figure 8 This is a schematic diagram of the valve body from another perspective in an embodiment of this utility model;

[0039] Figure 9 This is a schematic diagram of the structure of one embodiment of the valve core assembly in this utility model;

[0040] Figure 10 for Figure 9 Another perspective on the embodiments;

[0041] Figure 11 This is a schematic diagram of an embodiment of the gas water heater of this utility model.

[0042] Explanation of icon numbers:

[0043]

[0044]

[0045] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0047] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0048] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0049] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0050] Gas water heaters often experience significant temperature fluctuations when water flow changes, such as sudden changes in water temperature, or the water becoming hot initially and then cold again after being turned off and on again. Related technologies address this by incorporating a valve into the hot water system. However, these valves typically involve a valve core and a shielding component working together to release water, with the shielding component only connected to the valve core. During assembly, the valve core, shielding component, and mounting bracket for the valve core drive shaft are all independent parts. Workers must simultaneously hold these parts and install them into the valve body, resulting in inconvenient installation.

[0051] Therefore, this utility model proposes a valve device to reduce the assembly difficulty of the valve device. It is understood that the valve device is applied in a gas water heater, which includes an inlet pipe 200, an outlet pipe 300, and a heat exchanger 400. The valve device 100 is connected between the inlet pipe 200, the inlet end of the heat exchanger 400, and the outlet pipe 300. By adjusting the amount of water entering the inlet end of the heat exchanger 400 and the outlet pipe 300, the fluctuation of the outlet water temperature can be improved, and the constant temperature performance can be enhanced. The structure of this valve device 100 will be described below by way of an embodiment.

[0052] like Figures 1 to 3 as well as Figure 5 As shown, the valve device 100 includes a valve body 1, a fixing sleeve 4, a first shielding member 5, and a valve core assembly 2. The valve body 1 is provided with a valve cavity 101 and an inlet channel 11, a first outlet channel 12, a second outlet channel 13 and an installation port 15 communicating with the valve cavity 101. The first outlet channel 12 has a first water inlet 121 communicating with the valve cavity 101, and the second outlet channel 13 has a second water inlet 131 communicating with the valve cavity 101. The fixing sleeve 4 is sealed and installed in the installation port 15. The first shielding member 5 is fixedly disposed in the fixing sleeve 4 and installed into the valve cavity 101 through the installation port 15. The valve core assembly 2 is installed in the fixing sleeve 4. The valve core assembly 2 includes a first valve core 21 and a second valve core 22 disposed in the valve cavity 101. The first valve core 21 rotates with the first shielding member 5 to adjust the flow rate of the first water inlet 121, and the second valve core 22 rotates in the valve cavity 101 to adjust the flow rate of the second water inlet 131.

[0053] The valve body 1 serves as the outer shell of the valve device 100. The valve body 1 is provided with a valve cavity 101, an inlet channel 11, a first outlet channel 12, and a second outlet channel 13. It can be understood that water flowing into the valve cavity 101 from the inlet channel 11 can flow out from the first outlet channel 12 and / or the second outlet channel 13. Specifically, the first outlet channel 12 has a first water inlet 121 communicating with the valve cavity 101, and the second outlet channel 13 has a second water inlet 131 communicating with the valve cavity 101. The flow rate of the first water inlet 121 and the second water inlet 131 can be adjusted by the valve core assembly 2 located in the valve cavity 101 to adjust the water output of the first outlet channel 12 and the second outlet channel 13. The first valve core 21 rotates with the first shield 5 to adjust the flow rate of the first water inlet 121, and the second valve core 22 rotates in the valve cavity 101 to adjust the flow rate of the second water inlet 131. In practical applications, the inlet channel 11 can be selected as an inlet pipe, and the first outlet channel 12 and the second outlet channel 13 can be selected as outlet pipes to facilitate pipe installation.

[0054] It should be noted that in this embodiment, the valve cavity 101, the inlet channel 11, the first outlet channel 12, and the second outlet channel 13 are all formed in the valve body 1. The inlet channel 11, the first outlet channel 12, and the second outlet channel 13 are independent of the valve cavity 101 and are connected to the valve cavity 101 through corresponding water inlets. Specifically, the first water inlet 121 is located at the connection between the first outlet channel 121 and the valve cavity 101, the second water inlet 131 is located at the connection between the second outlet channel 131 and the valve cavity 101, and the inlet water inlet 111 is located at the connection between the inlet channel 11 and the valve cavity 101. That is, the valve cavity 101 and the first outlet channel 121 are located on both sides of the first water inlet 121, the valve cavity 101 and the second outlet channel 131 are located on both sides of the second water inlet 131, and the valve cavity 101 and the inlet channel 11 are located on both sides of the inlet water inlet 111.

[0055] Understandably, the relative positions of the inlet channel 11, the first outlet channel 12, and the second outlet channel 13 with the valve chamber 101 can be determined according to actual conditions. For example, one or two of the inlet channel 11, the first outlet channel 12, and the second outlet channel 13 may be located along the axial direction of the valve chamber 101, and the remaining ones may be located at an angle to the axial direction of the valve chamber 101; alternatively, the inlet channel 11, the first outlet channel 12, and the second outlet channel 13 may all be located along the axial direction of the valve chamber 101 or all may be located at an angle to the axial direction of the valve chamber 101. As an example, such as... Figure 5 As shown, valve cavity 101 is a cavity whose axial direction is parallel to the plane of the paper and extends laterally. Water inlet channel 11 is a channel that extends approximately radially along valve cavity 101 (i.e., water inlet channel 11 extends radially along valve cavity 101 or is slightly inclined), and communicates with valve cavity 101 through water inlet port 111. In some embodiments, water inlet port 111 is located on the peripheral wall of valve cavity 101. First water outlet channel 12 is a channel that extends approximately radially along valve cavity 101 (i.e., first water outlet channel 12 extends radially along valve cavity 101 or is slightly inclined), and communicates with valve cavity 101 through first water inlet port 121. In some embodiments... The first water inlet 121 is located on the peripheral wall of the valve cavity 101; the second water outlet channel 13 is a channel that extends approximately radially along the valve cavity 101 (i.e., the second water outlet channel 13 extends radially along the valve cavity 101 or is slightly inclined), and communicates with the valve cavity 101 through the second water inlet 131. In some embodiments, the second water inlet 131 may be located on the peripheral wall of the valve cavity 101 or at one axial end. It should be noted that when the second water inlet 131 is located at one axial end of the valve cavity 101, the second water outlet channel 13 is located on one axial side of the valve cavity 101, and the second water inlet 131 is located on the side wall of the second water outlet channel 13. In some embodiments, the mounting port 15 is located at one axial end of the valve cavity 101.

[0056] Understandably, this valve device 100 achieves the function of distributing the water flow through the rotational movement of the valve core assembly 2. To facilitate the rotational movement of the valve core assembly 2, the valve cavity 101 can be configured as a cylindrical cavity, with the valve core assembly 2 rotating around the central axis of the valve cavity 101. The first valve core 21 and the second valve core 22 are spaced apart along the axial direction of the valve cavity 101, and both the first valve core 21 and the second valve core 22 can rotate around the central axis of the valve cavity 101. Optionally, the first valve core 21 and the second valve core 22 can rotate synchronously or asynchronously.

[0057] Understandably, the valve cavity 101 is equipped with a first blocking member 5 independent of the valve body 1. The flow rate of the first water inlet 121 is adjusted by the rotational cooperation between the first valve core 21 and the first blocking member 5. Compared with the related technology, which uses the first valve core 21 to directly cooperate with the valve body 1 to adjust the opening of the first water inlet 121, this embodiment does not require limiting the shape and structure of the first water inlet 121 at the junction of the first water outlet channel 12 and the valve cavity 101. By using the first blocking member 5, which is independent of the valve body 1, to cooperate with the first valve core 21 for water flow, the manufacturing difficulty of the valve body 1 can be reduced, and the structural design of the first valve core 21 can be simplified, thereby improving the overall production efficiency of the valve device 100. In practical applications, the specific structure of the first blocking member 55 can be determined according to the actual situation, such as a plate structure, a block structure, a cylindrical structure, or some other structure.

[0058] In this embodiment, the valve body 1 is further provided with an installation port 15 communicating with the valve cavity 101. This installation port 15 serves to allow components such as the valve core assembly 2, the first shielding member 5, and the fixing sleeve 4 to be installed onto the valve body 1. It is understood that the fixing sleeve 4 supports the installation of the first shielding member 5 and the valve core assembly 2. During assembly, the first shielding member 5 and the valve core assembly 2 can be first installed onto the fixing sleeve 4 outside the valve body 1, and then the valve core assembly 2 and the shielding member can be inserted into the valve cavity 101 through the installation port 15. Simultaneously, the fixing sleeve 4 is sealed at the installation port 15, thus achieving the assembly of the first shielding member 5, the valve core assembly 2, and the fixing sleeve 4 with the valve body 1. In practical applications, the specific location of the installation port 15 can be determined according to the actual situation; for example, it can be on the peripheral wall surface 101a of the valve cavity 101 or at the axial end. The shape and structure of the installation port 15 can also be determined according to the actual situation; for example, it can be a circular port, a square port, a polygonal port, or some other shaped port.

[0059] The fixing sleeve 4 is sealed and installed at the mounting port 15. It is understood that the sealing connection method between the two can be determined according to the actual situation. For example, the fixing sleeve 4 and the mounting port 15 can be directly press-fitted, or a sealing element can be provided between the fixing sleeve 4 and the mounting port 15 for a sealed connection. Preferably, a sealing ring can be fitted onto the fixing sleeve 4. During assembly, the outer wall surface of the fixing sleeve 4 and the inner wall surface of the mounting port 15 press against the sealing ring to achieve a sealed assembly, thereby preventing water leakage at the mounting port 15.

[0060] It should be noted that in this embodiment, the first shielding member 5 is fixedly mounted on the fixed sleeve 4, and the valve core assembly 2 is mounted on the fixed sleeve 4. Therefore, before assembling it onto the valve body 1, the first shielding member 5 and the valve core assembly 2 can be mounted on the fixed sleeve 4 to form a single assembly. At this time, since the first shielding member 5 and the valve core assembly 2 are both engaged and limited by the fixed sleeve 4, the operator can simply hold the fixed sleeve 4 to pick up the entire assembly and insert it into the valve cavity 101 through the mounting port 15 to complete the assembly. Thus, compared with the related technology where the shielding member is only connected to the valve core, and the operator needs to hold the valve core, shielding member, and fixed sleeve 4 simultaneously for installation, this embodiment can effectively reduce the assembly difficulty and improve the assembly efficiency.

[0061] When this valve device 100 is applied to a water heater, the inlet channel 11 is connected to the inlet pipe 200, and one of the first outlet channel 12 and the second outlet channel 13 is connected to the inlet end of the heat exchanger 400, while the other is connected to the outlet pipe 300. The following explanation uses the example of the first outlet channel 12 being connected to the inlet end of the heat exchanger 400 and the second outlet channel 13 being connected to the outlet pipe 300 as an example:

[0062] Regarding the temperature rise during water outages, when the water heater is turned off and then turned on again, the valve core assembly 2 rotates. The first valve core 21 rotates to reduce or close the water flow at the first water inlet 121, while the second valve core 22 rotates to increase the water flow at the second water inlet 131. This allows more cold water to flow out from the second outlet and into the outlet pipe 300, thereby reducing the overall water temperature and resolving the temperature rise issue during water outages, preventing users from being scalded by hot water.

[0063] Regarding fluctuations during secondary startup, when the water heater is turned off and then turned on again, the valve core assembly 2 rotates, reducing the water flow rate at the first water inlet 121 and increasing the water flow rate at the second water inlet 131. This lowers the outlet water temperature to the required temperature, mitigating the issue of temperature rise during water outages. Then, after the device starts up, the valve core assembly 2 continues to rotate, increasing the water flow rate at the first water inlet 121 and decreasing the water flow rate at the second water inlet 131. This reduces the amount of cold water mixed into the outlet pipe 300, preventing excessive drops in the overall outlet water temperature. Therefore, the water temperature at the user's end is kept stable during the second startup of the water heater, avoiding sudden temperature changes.

[0064] Regarding water flow fluctuations, when the water flow suddenly increases, the water temperature will decrease. At this time, the valve core assembly 2 rotates, reducing the water flow through the second water inlet 131 and decreasing the amount of cold water mixed into the outlet pipe 300, thus preventing the outlet water temperature from dropping too much. Conversely, when the water flow suddenly decreases, the water temperature will rise. At this time, the valve core assembly 2 rotates, increasing the water flow through the second water inlet 131 and increasing the amount of cold water mixed into the outlet pipe 300, thus preventing the outlet water temperature from rising too much. This ensures a stable water temperature at the user's end when the water flow fluctuates.

[0065] In summary, in the valve device 100 of this utility model, the valve body 1 is provided with a valve cavity 101 and an inlet channel 11, a first outlet channel 12, and a second outlet channel 13 communicating with the valve cavity 101. The first outlet channel 12 has a first water inlet 121, and the second outlet channel 13 has a second water inlet 131. A rotatable valve core assembly 2 is provided in the valve cavity 101. The valve core assembly 2 has a first valve core 21 and a second valve core 22 spaced apart. The first valve core 21 and the valve core 22 in the valve cavity 101 are connected. The first blocking member 5 rotates to adjust the water flow rate of the first water inlet 121, and the second valve core 22 rotates in the valve cavity 101 to adjust the water flow rate of the second water inlet 131, thereby realizing the water distribution function of the first water outlet channel 12 and the second water outlet channel 13. When the valve device 100 of this embodiment is applied to a gas water heater, it can adjust the water flow rate of the first water outlet channel 12 and the second water outlet channel 13 according to different operating conditions of the gas water heater, thereby improving the water temperature fluctuation and enhancing the constant temperature performance.

[0066] In addition, the valve body 1 is provided with an installation port 15 that communicates with the valve cavity 101. By fixing the first shielding member 5 to the fixing sleeve 4 and installing the valve core assembly 2 to the fixing sleeve 4, during assembly, the first shielding member 5 and the valve core assembly 2 can be installed on the fixing sleeve 4 outside the valve body 1 to form a whole assembly. Thus, the operator can pick up the whole assembly by holding the fixing sleeve 4 and insert it into the valve cavity 101 through the installation port 15 to complete the assembly. In this way, the assembly difficulty can be effectively reduced and the assembly efficiency can be improved.

[0067] In one embodiment of this application, as Figures 2 to 4 The first shielding component 5 and the fixing sleeve 4 are an integral structure.

[0068] This design eliminates the need for assembling the first shielding component 5 with the fixing sleeve 4. During assembly, the valve core assembly 2 only needs to be installed onto the fixing sleeve 4, so that the first shielding component 5, the valve core assembly 2, and the fixing sleeve 4 can form a single component before being installed into the valve body 1, further simplifying the assembly steps and reducing assembly difficulty.

[0069] As an example, the first shielding member 5 and the fixing sleeve 4 are integrally formed. Optionally, when the fixing sleeve 4 is a plastic part, the first shielding member 5 and the fixing sleeve 4 can be integrally formed by molding or 3D printing; when the fixing sleeve 4 is a metal part, the first shielding member 5 and the fixing sleeve 4 can be integrally formed by casting.

[0070] In one embodiment of this application, as Figures 2 to 6 as well as Figure 9 The fixed sleeve 4 is provided with an assembly hole 41; the valve core assembly 2 also includes a rotating shaft 23 that axially connects the first valve core 21 and the second valve core 22. The end of the rotating shaft 23 facing away from the second valve core 22 is sealed and fitted into the assembly hole 41, and extends out of the assembly hole 41 for driving connection with the drive assembly 3.

[0071] In this embodiment, by connecting both the first valve core 21 and the second valve core 22 to the rotating shaft 23, the rotation of the rotating shaft 23 can drive the first valve core 21 and the second valve core 22 to rotate simultaneously. Therefore, flow rate regulation of the first outlet channel 12 and the second outlet channel 13 can be achieved simply by driving the rotating shaft 23 to rotate. Optionally, the rotation axis of the rotating shaft 23 is aligned with the central axis of the valve cavity 101, and the first valve core 21 and the second valve core 22 rotate around the central axis of the valve cavity 101. Connecting the first valve core 21 and the second valve core 22 via the rotating shaft 23 further improves the structural reliability of the valve core assembly 2 during rotation and ensures the synchronous rotation of the first valve core 21 and the second valve core 22.

[0072] During assembly, the end of the rotating shaft 23 facing away from the second valve core 22 can be inserted into the assembly hole 41 of the fixed sleeve 4 and protrude from the assembly hole 41, so that the valve core assembly 2 is assembled with the fixed sleeve 4. At this time, since the first shielding member 5 and the fixed sleeve 4 are an integral structure, the valve core assembly 2, the first shielding member 5 and the fixed sleeve 4 form an integral assembly. Then, the integral assembly is inserted into the valve cavity 101 from the mounting port 15, and the assembly step is achieved by sealing the fixed sleeve 4 with the mounting port 15. Further, the drive assembly 3 is installed on the fixed sleeve 4 and driven to connect with the rotating shaft 23 to realize the function of the drive assembly 3 driving the valve core assembly 2 to rotate.

[0073] Optionally, the rotating shaft 23 and the mounting hole 41 can be sealed with a sealing ring. Optionally, the drive assembly 3 is a stepper motor, and the portion of the rotating shaft 23 extending outside the fixing sleeve 4 can be a gear shaft for drive connection with the stepper motor. Optionally, the drive assembly 3 and the fixing sleeve 4 can be fixed with screws.

[0074] Furthermore, such as Figure 4 and Figure 6The assembly hole 41 is provided with a first limiting part 411, and the rotating shaft 23 is provided with a second limiting part 231. The second limiting part 231 is used to cooperate with the first limiting part 411 to limit the rotation angle of the rotating shaft 23. This arrangement can prevent the rotating shaft 23 from rotating too far and affecting the distribution of the water flow.

[0075] Optionally, the first limiting part 411 can be an arc-shaped rib provided on the wall of the assembly hole 41, so that the first limiting part 411 has two limiting surfaces along the circumferential direction. When the rotating shaft 23 rotates in the assembly hole 41, the two limiting surfaces can respectively abut against the second limiting part 231 on the rotating shaft 23 to limit the rotation angle of the rotating shaft 23.

[0076] In one embodiment of this application, the mounting port 15 is located at one axial end of the valve cavity 101, and the rotating shaft 23 is coaxially arranged with the valve cavity 101. This design allows the valve core assembly 2, the first shielding member 5, and the fixing sleeve 4 to be inserted into the valve cavity 101 from the mounting port 15 along the axial direction of the valve cavity 101. Compared with insertion from other directions, the valve core assembly 2 in this embodiment is easier to position and simpler to operate.

[0077] In one embodiment of this application, as Figure 3 , Figure 5 as well as Figure 8 The inner wall of the valve cavity 101 is provided with a first limiting stop, and the outer wall of the fixing sleeve 4 is provided with a second limiting stop 401; the first limiting stop is used to limit and stop the second limiting stop 401 when the fixing sleeve 4 is installed to the installation port 15.

[0078] As can be seen from the foregoing embodiments, during assembly, the first shielding member 5 and the valve core assembly 2 are first installed on the fixing sleeve 4, and then inserted into the valve cavity 101 through the mounting port 15. In this embodiment, the inner wall of the valve cavity 101 is provided with a first limiting stop, and the outer wall of the fixing sleeve 4 is provided with a second limiting stop 401. When the fixing sleeve 4 drives the first shielding member 5 and the valve core assembly 2 to be inserted into the valve cavity 101, the first limiting stop and the second limiting stop 401 can play an axial limiting role on the fixing sleeve 4, thereby playing a role in the installation and positioning of the first shielding member 5 and the valve core assembly 2.

[0079] Optionally, the first limiting stop can be a protruding structure on the peripheral wall 101a of the valve cavity 101. To ensure a better stopping effect, preferably, the first limiting stop is an annular boss structure. Correspondingly, the second limiting stop 401 can be a protruding structure on the outer peripheral surface of the fixing sleeve 4. To ensure a better stopping effect, preferably, the second limiting stop 401 is an annular boss structure.

[0080] In one embodiment of this application, as Figure 2 , Figure 3 as well as Figure 5The first shielding member 5 is provided with a water inlet 501. When the fixing sleeve 4 is installed to the installation port 15, the first water inlet 121 is connected to the valve cavity 101 through the water inlet 501. The first valve core 21 is rotatably engaged with the first shielding member 5 to adjust the opening of the water inlet 501.

[0081] Understandably, the first water inlet 121 is connected to the valve chamber 101 through the water outlet 501. The water flow rate of the first water inlet 121 is adjusted by the rotation of the first valve core 21 and the first blocking member 5. In other words, in this embodiment, it is only necessary to rotate the first valve core 21 to block or open the water outlet 501 to adjust the opening degree of the water outlet 501. Compared to the related technologies where a notch is provided on the first valve core 21 and the opening of the notch is adjusted by rotating the first valve core 21, this embodiment does not require specific limitations on the structure of the first valve core 21 itself. Compared to the related technologies where the first valve core 21 is directly engaged with the valve body 1 to adjust the opening of the first water inlet 121, this embodiment does not require limitations on the shape and structure of the first water inlet 121 at the junction of the first water outlet channel 12 and the valve cavity 101. By providing the water outlet 501 on the first shielding member 5 independent of the valve body 1, the manufacturing difficulty of the valve body 1 structure can be reduced, and the structural design of the first valve core 21 can be simplified, thereby improving the overall production efficiency of the valve device 100.

[0082] Furthermore, such as Figure 2 , Figure 3 as well as Figure 5 The first water inlet 121 is located on the peripheral wall surface 101a of the valve cavity 101.

[0083] In this embodiment, the first water inlet 121 is located on the peripheral wall surface 101a of the valve cavity 101. By engaging the first blocking member 5 with the peripheral wall surface 101a of the valve cavity 101, the water outlet 501 is aligned and connected with the first water inlet 121. When the first valve core 21 rotates relative to the first blocking member 5, the outer peripheral surface of the first valve core 21 can block or open the water outlet 501, thereby adjusting the opening degree of the water outlet 501. It can be understood that the water outlet 501 is for radial water flow, which can reduce the generation of eddies in the valve cavity 101 and reduce resistance.

[0084] In practical applications, the first shielding member 5 can be an arc structure or a cylindrical structure that mates with the peripheral wall 101a of the valve cavity 101.

[0085] As an example, such as Figure 2 , Figure 3 as well as Figure 5The first shielding member 5 is a cylindrical body; the outer peripheral surface of the first shielding member 5 is tightly fitted with the peripheral wall surface 101a of the valve cavity 101, and the water inlet 501 penetrates the inner and outer peripheral surfaces of the first shielding member 5; the first valve core 21 is located inside the first shielding member 5, and the outer peripheral surface of the first valve core 21 is rotatably engaged with the inner peripheral surface of the first shielding member 5 to block or open the water inlet 501.

[0086] By setting the first shielding member 5 as a cylindrical structure, the outer peripheral surface of the first shielding member 5 is tightly fitted with the peripheral wall surface 101a of the valve cavity 101, which can prevent water from leaking out between the first shielding member 5 and the peripheral wall surface 101a of the valve cavity 101, thus ensuring the accuracy of flow control. The water inlet 501 penetrates the inner and outer peripheral surfaces of the first shielding member 5. At this time, the inner cavity of the first shielding member 5 is connected to the valve cavity 101, and the water inlet 501 is a radial water passage. By placing the first valve core 21 inside the first shielding member 5, the first valve core 21 is located on the upstream side of the water inlet 501. Thus, when the first valve core 21 rotates to block the water inlet 501, the water pressure can be used to increase the blocking force of the first valve core 21 on the water inlet 501.

[0087] Furthermore, the first valve core 21 is a stop block 211. The outer peripheral surface of the stop block 211 is rotatably engaged with the inner peripheral surface of the first blocking member 5 to block or open the water outlet 501; the outer peripheral surface of the stop block 211 is an arc surface or a spherical surface.

[0088] Understandably, the first valve core 21 can be an arc-shaped block, a spherical block, a butterfly-shaped block, or some other shape or structure.

[0089] Preferably, the outer peripheral surface of the first valve core 21 is an arc surface, so that the shape of the outer peripheral surface of the first valve core 21 matches the shape of the inner peripheral surface of the first shielding member 5. Specifically, the outer peripheral surface of the first valve core 21 is basically tangent to the inner peripheral surface of the first shielding member 5. Here, "basically tangent" means that the outer peripheral surface of the first valve core 21 is in contact or basically in contact with the inner peripheral surface of the first shielding member 5, so that there is no flow gap or a very small flow gap between the outer peripheral surface of the first valve core 21 and the inner peripheral surface of the first shielding member 5, so as to further improve the sealing effect of the first valve core 21 on the water outlet 501.

[0090] In one embodiment of this application, as Figure 5 , Figure 7 , Figure 9 as well as Figure 10 The valve body 1 is provided with a second blocking member 14, which is located at one end of the valve cavity 101 that is axially opposite to the mounting port 15. The second blocking member 14 is provided with a second water inlet 131. The second valve core 22 is rotatably engaged with the second blocking member 14 to block or open the second water inlet 131.

[0091] In this embodiment, a second blocking member 14 is provided inside the valve body 1, and a second water inlet 131 is provided on the second blocking member 14. The second valve core 22 adjusts the opening degree of the second water inlet 131 by rotating with the second blocking member 14. It can be understood that the valve core assembly 2 is installed into the valve cavity 101 via the mounting port 15. The second blocking member 14 is located at the end of the valve cavity 101 axially away from the mounting port 15. Therefore, the valve core assembly 2 only needs to be inserted from the mounting port 15 along the axial direction of the valve cavity 101 to allow the second valve core 22 to move and rotate with the second blocking member 14. This eliminates the need for multiple installation operations on the valve core assembly 2 and for multiple positioning operations on the rotation center of the valve core assembly 2, further simplifying the installation operation and improving installation convenience.

[0092] Understandably, the specific structure of the second shielding member 14 can be determined according to the actual situation. For example, it can be a plate-shaped structure, a block-shaped structure, a cylindrical structure, or some other structures.

[0093] In practical applications, the second shielding member 14 can be an integral or separate structure from the valve body 1. In this embodiment, considering assembly efficiency, it is preferable that the second shielding member 14 is integrally formed into the valve body 1 for ease of manufacturing. It is understood that the method of integral forming of the second shielding member 14 and the valve body 1 can also be determined according to the actual situation. For example, when the valve body 1 is a metal part, the second shielding member 14 and the valve body 1 can be integrally formed by casting; when the valve body 1 is a plastic part, the second shielding member 14 and the valve body 1 can be integrally formed by molding or 3D printing.

[0094] As an example, the second shielding member 14 is a shielding plate; the second water inlet 131 extends axially along the valve cavity 101, and the axial end face of the second valve core 22 is rotatably engaged with the second shielding member 14. It can be understood that the axial end face of the second valve core 22 and the axial end face of the second shielding member 14 are basically fitted together, so that there is no or very little flow gap between the axial end face of the second valve core 22 and the axial end face of the second shielding member 14, to ensure the sealing effect of the second valve core 22 on the second water inlet 131.

[0095] In this embodiment, by setting the second shielding member 14 as a shielding plate, compared with other structures such as cylindrical or block structures, the shielding plate has a simpler structural shape, is easier to integrally mold inside the valve body 1, and has a lower molding process difficulty. The shielding plate separates the second water outlet channel 13 from the valve cavity 101. The second water inlet 131 is located on the shielding plate or between the shielding plate and the peripheral wall surface 101a of the valve cavity 101, so that when the second valve core 22 rotates in the valve cavity 101, it can rotate relative to the shielding plate to block or open the second water inlet 131, thereby regulating the flow rate at the second water inlet 131.

[0096] Optionally, when the periphery of the baffle plate is connected to the peripheral wall surface 101a of the valve cavity 101, the second water inlet 131 is directly formed by an opening in the baffle plate. In this manner, when the second valve core 22 blocks the second water inlet 131, the second valve core 22 can cooperate with the plate surface around the second water inlet 131 to achieve a better water-blocking effect.

[0097] Optionally, the side of the baffle plate is provided with a notch, which is used to form a second water inlet 131 by surrounding the peripheral wall 101a of the valve cavity 101. This design makes it easier to mold and manufacture.

[0098] Understandably, the shape of the second water inlet 131 can be, for example, circular, fan-shaped, square, strip-shaped, or other shapes. The radial cross-sectional shape of the second valve core 22 can also be determined according to the actual situation, for example, it can be fan-shaped, square, circular, or other shapes. Considering that the second valve core 22 rotates within the valve cavity 101, in order to better block and allow water to pass through, in this embodiment, the second water inlet 131 is set as a fan-shaped hole with the central axis of the valve cavity 101 as the center. Correspondingly, the radial cross-section of the second valve core 22 is fan-shaped, so the outer peripheral surface of the second valve core 22 is an arc surface adapted to the peripheral wall surface 101a of the valve cavity 101. Specifically, the outer peripheral surface of the second valve core 22 is basically tangent to the peripheral wall surface 101a of the valve cavity 101. Here, "basically tangent" means that the outer peripheral surface of the second valve core 22 is in contact or basically in contact with the peripheral wall surface 101a of the valve cavity 101, so that there is no flow gap or a very small flow gap between the outer peripheral surface of the second valve core 22 and the peripheral wall surface 101a of the valve cavity 101, thereby further improving the sealing effect of the second valve core 22 on the second water inlet 131. The central angle of the second valve core 22 is larger than the central angle of the second water inlet 131. This setting allows the second valve core 22 to completely seal the second water inlet 131 during rotation, while the second valve core 22 can adjust the opening size of the second water inlet 131.

[0099] Furthermore, such as Figure 5 , Figure 7 , Figure 9 as well as Figure 10The second valve core 22 is a baffle plate, and the axial end face of the baffle plate is rotatably engaged with the axial end face of the baffle plate. The baffle plate of the second valve core 22 is provided with a flow port 22a. Optionally, the flow port 22a can be a through hole or notch on the second valve core 22. When the second valve core 22 rotates, it can drive the flow port 22a to move relative to the second water inlet 131 to adjust the overlap area between the flow port 22a and the second water inlet 131. It can be understood that when the second valve core 22 rotates and causes the flow port 22a to overlap with the second water inlet 131, the valve cavity 101 and the second water outlet channel 13 are in a conductive state. The conductive area between the valve cavity 101 and the second water outlet channel 13 is adjusted by adjusting the overlap area. When the disc of the second valve core 22 completely blocks the second water inlet 131, the second water outlet channel 13 and the valve cavity 101 are in a disconnected state.

[0100] Specifically, the second shielding member 14 is provided with a mounting hole 141, and the second valve core 22 has a protruding shaft 221 on its axial end face away from the first valve core 21. When the valve core assembly 2 is inserted into the valve cavity 101 through the mounting port 15, the protruding shaft 221 is rotatably engaged in the mounting hole 141. It can be understood that the central axis of the mounting hole 141 is consistent with the central axis of the valve cavity 101, and the central axis of the protruding shaft 221 is consistent with the central axis of the valve cavity 101. During assembly, the mounting hole 141 and the protruding shaft 221 can play a role in the installation and positioning of the valve core assembly 2. Thus, when the valve core assembly 2 is inserted into the valve cavity 101 through the mounting port 15, the protruding shaft 221 of the second valve core 22 can be directly rotatably engaged in the mounting hole 141, so that the axial end face of the second valve core 22 engages with the plate surface of the shielding plate, without the need for additional positioning and limiting operations on the valve core assembly 2.

[0101] This utility model also proposes a gas water heater, such as Figure 11 The gas water heater includes an inlet pipe 200, an outlet pipe 300, a heat exchanger 400, and a valve device 100. The specific structure of the valve device 100 is as described in the above embodiments. Since this gas water heater adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. Among them, the inlet channel 11 is connected to the inlet pipe 200, and one of the first outlet channel 12 and the second outlet channel 13 is connected to the inlet end of the heat exchanger 400, and the other is connected to the outlet pipe 300.

[0102] The following explanation is based on the example of the first water outlet channel 12 being connected to the inlet end of the heat exchanger 400, and the second water outlet channel 13 being connected to the outlet pipe 300:

[0103] Regarding the temperature rise during water outages, when the water heater is turned off and then turned on again, the valve core assembly 2 rotates. The first valve core 21 rotates to reduce or close the water flow at the first water inlet 121, while the second valve core 22 rotates to increase the water flow at the second water inlet 131. This allows more cold water to flow out from the second outlet and into the outlet pipe 300, thereby reducing the overall water temperature and resolving the temperature rise issue during water outages, preventing users from being scalded by hot water.

[0104] Regarding fluctuations during secondary startup, when the water heater is turned off and then turned on again, the valve core assembly 2 rotates, reducing the water flow rate at the first water inlet 121 and increasing the water flow rate at the second water inlet 131. This lowers the outlet water temperature to the required temperature, mitigating the issue of temperature rise during water outages. Then, after the device starts up, the valve core assembly 2 continues to rotate, increasing the water flow rate at the first water inlet 121 and decreasing the water flow rate at the second water inlet 131. This reduces the amount of cold water mixed into the outlet pipe 300, preventing excessive drops in the overall outlet water temperature. Therefore, the water temperature at the user's end is kept stable during the second startup of the water heater, avoiding sudden temperature changes.

[0105] Regarding water flow fluctuations, when the water flow suddenly increases, the water temperature will decrease. At this time, the valve core assembly 2 rotates, reducing the water flow through the second water inlet 131 and decreasing the amount of cold water mixed into the outlet pipe 300, thus preventing the outlet water temperature from dropping too much. Conversely, when the water flow suddenly decreases, the water temperature will rise. At this time, the valve core assembly 2 rotates, increasing the water flow through the second water inlet 131 and increasing the amount of cold water mixed into the outlet pipe 300, thus preventing the outlet water temperature from rising too much. This ensures a stable water temperature at the user's end when the water flow fluctuates.

[0106] Therefore, it can be seen that the gas water heater provided in this application can improve the fluctuation of water temperature and enhance the constant temperature performance.

[0107] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A valve device, characterized by include: The valve body is provided with a valve cavity and an inlet channel, a first outlet channel, a second outlet channel and an installation port communicating with the valve cavity. The first outlet channel has a first water inlet communicating with the valve cavity, and the second outlet channel has a second water inlet communicating with the valve cavity. A retaining sleeve is installed in a sealed manner at the mounting port; The first blocking member is fixedly disposed in the fixing sleeve and installed into the valve cavity through the mounting port; and A valve core assembly is installed on the fixed sleeve. The valve core assembly includes a first valve core and a second valve core disposed in the valve cavity. The first valve core rotates with the first shielding member to adjust the water flow rate of the first water inlet. The second valve core rotates in the valve cavity to adjust the water flow rate of the second water inlet.

2. The valve device of claim 1, wherein The first shielding member and the fixing sleeve are an integral structure.

3. The valve device of claim 2, wherein The first shielding member is provided with a water inlet. When the fixing sleeve is installed at the mounting port, the first water inlet communicates with the valve cavity through the water inlet. The first valve core rotates in conjunction with the first shielding member to block or open the water inlet.

4. The valve device of claim 3, wherein The first water inlet is located on the peripheral wall of the valve cavity; The first shielding member is a cylindrical body, and the outer peripheral surface of the first shielding member is tightly fitted with the peripheral wall surface of the valve cavity. The water inlet penetrates the inner and outer peripheral surfaces of the first shielding member. The first valve core is located inside the first shielding member and rotates with the inner circumferential surface of the first shielding member to block or open the water inlet.

5. The valve device of claim 4, wherein The water inlet extends circumferentially along the first shielding member; the first valve core is a stop block, and the outer circumferential surface of the first valve core cooperates with the inner circumferential surface of the first shielding member to block or open the water inlet.

6. Valve device according to any of claims 1 to 5, characterized in that The fixed sleeve is provided with an assembly hole; the valve core assembly also includes a rotating shaft that axially connects the first valve core and the second valve core, the end of the rotating shaft opposite to the second valve core is sealed and fitted in the assembly hole, and extends out of the assembly hole for driving connection with the drive assembly.

7. The valve device of claim 6, wherein The mounting port is located at one axial end of the valve cavity, and the mounting port is coaxial with the valve cavity. The rotating shaft is coaxial with the valve cavity.

8. The valve apparatus of claim 7, wherein The valve body is provided with a second shielding member, which is located at one end of the valve cavity that is axially opposite to the mounting port, and the second shielding member is provided with a second water inlet; The second valve core rotates in conjunction with the second shielding member to block or open the second water inlet.

9. The valve apparatus of claim 8, wherein The second shielding component is a shielding plate; the periphery of the shielding plate is connected to the peripheral wall of the valve cavity, and the second water inlet is formed by an opening in the shielding plate; or, the shielding plate has a notch to surround the peripheral wall of the valve cavity to form the second water inlet; The second valve core is a baffle, and the axial end face of the baffle is rotatably engaged with the axial end face of the baffle plate. The baffle has a flow port that communicates with the valve cavity. When the baffle rotates, it can drive the flow port to move relative to the second water inlet, so as to adjust the overlap area between the flow port and the second water inlet.

10. The valve apparatus of claim 8, wherein The second shielding member is provided with a mounting hole, which is coaxially arranged with the valve cavity; The second valve core is provided with a convex shaft at the axial end surface away from the first valve core, and the convex shaft is rotationally fitted in the mounting hole when the valve core assembly is inserted into the valve cavity through the mounting port.

11. The valve device according to any one of claims 1 to 5, wherein An inner wall of the valve cavity is provided with a first limiting stop table, and an outer wall of the fixed sleeve is provided with a second limiting stop table. The first limiting stop table is used for limiting and stopping the second limiting stop table when the fixed sleeve is installed to the mounting port.

12. A gas water heater, characterized by, The water heating device comprises a water inlet pipe, a water outlet pipe, a heat exchanger, and the valve device according to any one of claims 1 to 11, the water inlet flow channel is communicated with the water inlet pipe, one of the first water outlet flow channel and the second water outlet flow channel is communicated with the water inlet end of the heat exchanger, and the other is communicated with the water outlet pipe.

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