Water inlet valve of rear throttle valve

Abstract

The water inlet valve comprises a shell, a first installation cavity and a second installation cavity are formed in the shell, a flow sensor is installed in the first installation cavity, the throttling valve is installed in the second installation cavity, the first installation cavity and the second installation cavity are communicated through a communication opening, and the throttling valve is installed in the communication opening. The shell comprises a first cold water inlet communicating with the first mounting cavity and a plate exchange inlet communicating with the second mounting cavity, and the first cold water inlet, the flow sensor, the communicating opening, the throttling valve and the plate exchange inlet form a water inlet path. The flow sensor is arranged at the first cold water inlet, and the throttling valve is arranged at the limiting cavity, so that cold water entering the shell firstly passes through the flow sensor and then passes through the throttling valve, the throttling valve is arranged at the back, and flow regulation and control of the whole water path of the wall-hanging stove are facilitated.

Description

Technical Field

[0001] The utility model relates to a water inlet valve for a wall-mounted boiler, and more particularly to a water inlet valve with a rear throttle valve. Background Art

[0002] The water inlet valve currently used for wall-mounted boilers has the following problems:

[0003] The flow sensor of the water inlet valve is placed after the throttle valve, which means that the flow sensor can only detect the flow of water after the throttle valve and cannot detect the water flow before the throttle valve. Therefore, there is an urgent need to improve this. Utility Model Content

[0004] The purpose of the present utility model is to overcome the deficiencies of the above-mentioned prior art and provide a water inlet valve with a post-throttle valve. By arranging a flow sensor at the first cold water inlet and arranging the throttle valve at the limit cavity, the cold water entering the shell first passes through the flow sensor and then enters the throttle valve, thereby realizing the post-positioning of the throttle valve, which is beneficial to the flow control of the overall water channel of the wall-mounted boiler.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a water inlet valve with a post-throttle valve, comprising a shell, a first installation cavity and a second installation cavity are provided inside the shell, a flow sensor is installed in the first installation cavity, a throttle valve is installed in the second installation cavity, the first installation cavity and the second installation cavity are connected through a connecting port, the shell comprises a first cold water inlet connected to the first installation cavity, and a plate exchange inlet connected to the second installation cavity, the first cold water inlet, the flow sensor, the connecting port, the throttle valve and the plate exchange inlet form a water inlet waterway.

[0006] Furthermore, the second installation cavity includes a limiting cavity, the throttle valve is installed in the limiting cavity, the end cover of the second installation cavity away from the plate exchange inlet is covered with a blocking cover, the blocking cover includes a convex rib, the convex rib abuts one end of the throttle valve, the inner wall of the plate exchange inlet is provided with an annular platform, and the annular platform abuts the other end of the throttle valve.

[0007] Furthermore, the blocking cover is fixed to the shell by screws.

[0008] Furthermore, the first cold water inlet is connected to a first joint, and a first filter is installed inside the first joint.

[0009] Furthermore, a second filter element is provided at one end of the first joint located in the first cold water inlet, and the second filter element includes a hemispherical cover, which protrudes into the first installation cavity. A limit platform is provided between the first installation cavity and the first cold water inlet, and an annular surface is provided on the side of the hemispherical cover. One end of the first joint located in the first cold water inlet abuts the lower part of the annular surface and the limit platform abuts the upper part of the annular surface.

[0010] Furthermore, a water channel is provided inside the shell, and the shell also includes a plate exchange outlet and a first interface connected to the water channel, and the plate exchange outlet, the water channel and the first interface form a water outlet waterway.

[0011] Furthermore, a second interface is provided on the side of the shell, and the first interface, the second interface and the water channel are connected.

[0012] Furthermore, a third interface is provided on the side of the shell, a second joint is installed at the third interface, and the first interface, the third interface and the water channel are connected.

[0013] Furthermore, the first cold water inlet is eccentrically arranged with respect to the first installation cavity.

[0014] Furthermore, a fifth interface is provided on the side of the shell, and a water supply valve is installed at the end of the fifth interface.

[0015] In summary, the present invention has the following beneficial effects:

[0016] The first cold water inlet is connected to an external water source, and the external water source enters the first installation cavity from the first cold water inlet, passes through the flow sensor, and then enters the second installation cavity from the connecting port. After the flow is limited by the throttle valve in the second installation cavity, it enters the plate heat exchanger (not shown in the figure) from the plate heat exchanger inlet for heat exchange. It can be seen that the cold water entering the shell from the first cold water inlet first passes through the flow sensor and then passes through the throttle valve, realizing the post-positioned throttle valve structure, which is beneficial to the flow control of the overall water channel of the wall-mounted boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the embodiment at a first viewing angle;

[0018] Figure 2 This is a schematic structural diagram of the embodiment at a second viewing angle;

[0019] Figure 3 It is a sectional view of the main view of this embodiment;

[0020] Figure 4 for Figure 3 A partial schematic diagram of

[0021] Figure 5 for Figure 3 Cross-sectional view at AA;

[0022] Figure 6 for Figure 5 Cross-sectional view at BB.

[0023] Figure numerals: 1. Shell; 101. First cold water inlet; 102. First installation cavity; 103. Communication port; 104. Limiting cavity; 105. Second installation cavity; 106. Plate exchange inlet; 107. Plate exchange outlet; 108. First interface; 109. Second interface; 110. Third interface; 111. Water channel; 112. Annular platform; 113. Limiting platform; 114. Fourth interface; 115. Fifth interface; 2. Flow sensor; 3. Throttle valve; 4. First connector; 5. Second connector; 6. First filter element; 7. Second filter element; 71. Hemispherical cover; 72. Annular surface; 8. Plug cover; 81. Convex rib; 9. Water supply valve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 making creative efforts are within the scope of protection of the present invention.

[0025] Disclosed is a water inlet valve with a post-throttle valve, comprising a shell 1. A first mounting cavity 102 and a second mounting cavity 105 are provided inside the shell 1. A flow sensor 2 is installed in the first mounting cavity 102, and a throttle valve 3 is installed in the second mounting cavity 105. The first mounting cavity 102 and the second mounting cavity 105 are connected via a connecting port 103. The flow sensor 2 and the throttle valve 3 are both existing technologies, and their specific structures and working principles are not described in detail in this specification.

[0026] The shell 1 includes a first cold water inlet 101 connected to the first installation cavity 102, and a plate exchange inlet 106 connected to the second installation cavity 105. The first cold water inlet 101, the flow sensor 2, the connecting port 103, the throttle valve 3 and the plate exchange inlet 106 form a water inlet waterway.

[0027] like Figure 2 and Figure 3 As shown, the first cold water inlet 101 is connected to the external water source, and the external water source enters the first installation cavity 102 from the first cold water inlet 101, passes through the flow sensor 2, and flows into the second installation cavity 105 from the connecting port 103. After the flow is limited by the throttle valve 3 installed in the limiting cavity 104 in the second installation cavity 105, it enters the plate heat exchanger (not shown in the figure) from the plate heat exchanger inlet 106 for heat exchange. It can be seen that the cold water entering the shell 1 from the first cold water inlet 101 first passes through the flow sensor 2 and then passes through the throttle valve 3, realizing the post-mounted structure of the throttle valve 3, which is beneficial to the flow control of the overall water channel of the wall-mounted boiler.

[0028] The throttle valve 3 is equivalent to a flow regulating valve. The flow rate of water after passing through the throttle valve 3 depends on the model of the throttle valve 3. The flow sensor 2 is set in front of the throttle valve 3, which can detect the flow rate entering the shell 1 from the first cold water inlet 101. The flow rate detected by the flow sensor 2 and the flow rate limited by the throttle valve 3 can be beneficial to the flow control of the overall water channel of the wall-mounted boiler, thereby improving the water temperature control in the wall-mounted boiler system pipeline.

[0029] like Figure 5 As shown, the first cold water inlet 101 and the first installation cavity 102 are eccentrically arranged. Through the above design, the water flow entering from the first cold water inlet 101 is prevented from directly impacting the flow sensor 2, which is beneficial to improving the service life of the flow sensor 2.

[0030] like Figure 1 and Figure 6 As shown, the second installation cavity 105 includes a limiting cavity 104, and the throttle valve 3 is installed in the limiting cavity 104. One end of the second installation cavity 105 away from the plate exchange inlet 106 is covered with a blocking cover 8, and the blocking cover 8 is fixed to the shell 1 by screws. The blocking cover 8 includes a convex rib 81, and the convex rib 81 abuts one end of the throttle valve 3. The inner wall of the plate exchange inlet 106 is provided with an annular platform 112, and the annular platform 112 abuts the other end of the throttle valve 3. By providing the blocking cover 8, not only can the throttle valve 3 be installed and limited, but also the throttle valve 3 is convenient for disassembly and assembly, which is conducive to replacing different models of throttle valves 3 according to different needs.

[0031] like Figure 4 As shown, the first cold water inlet 101 end is connected to the first joint 4, and the first filter element 6 is installed inside the first joint 4. The end of the first joint 4 located in the first cold water inlet 101 is provided with a second filter element 7, and the second filter element 7 includes a hemispherical cover 71, which protrudes into the first installation cavity 102. A stopper 113 is provided between the first installation cavity 102 and the first cold water inlet 101. The side of the hemispherical cover 71 is provided with an annular surface 72. The end of the first joint 4 located in the first cold water inlet 101 abuts the lower part of the annular surface 72, and the stopper 113 abuts the upper part of the annular surface 72. The outer wall of the first filter element 6 is tightly matched with the inner wall of the first joint 4. The mesh size of the first filter element 6 is larger than the mesh size of the second filter element 7. By arranging the first filter element 6 and the second filter element 7, secondary filtration of the incoming water source can be achieved, and the filtration effect is good. In addition, the hemispherical cover 71 structure can increase the contact area between the second filter element 7 and water, thereby facilitating the flow of water through the second filter element 7.

[0032] like Figure 5As shown, a water channel 111 is provided inside the shell 1, and the shell 1 also includes a plate heat exchanger outlet 107 and a first interface 108 communicated with the water channel 111. The first interface 108 end can be connected to a circulating water pump (not shown in the figure). The plate heat exchanger outlet 107, the water channel 111 and the first interface 108 form a water outlet waterway. After the hot water is cooled by the plate heat exchanger, it enters the water channel 111 from the plate heat exchanger outlet 107 and then flows out from the first interface 108. The cooled hot water is re-delivered to the boiler of the wall-mounted boiler (not shown in the figure) through the circulating water pump for heating.

[0033] A second interface 109 is provided on the side of the shell 1. The first interface 108, the second interface 109 and the water channel 111 are connected. The second interface 109 is connected to the floor heating return pipe (not shown in the figure). The water in the floor heating return pipe can also flow out through the first interface 108 and be heated by the boiler.

[0034] A third interface 110 is provided on the side of the shell 1, and a second joint 5 is installed at the third interface 110. The first interface 108, the third interface 110 and the water channel 111 are connected. The third interface 110 can be connected to an expansion water tank (not shown in the figure). In the wall-mounted boiler heating system, due to the expansion of the volume of water in the pipeline, pressure will be generated during the heating process, which will have a negative impact on the entire system. The expansion water tank helps to reduce the pressure of other elements and the expansion of hot water by adding a certain amount of water capacity in the system, thereby effectively protecting the entire system and extending the service life of the system.

[0035] A fourth interface 114 is provided on the side of the housing 1 , and a temperature sensor (not shown in the figure) can be installed at the fourth interface 114 for detecting the water temperature in the waterway 111 .

[0036] A fifth interface 115 is provided on the side of the shell 1, and a water supply valve 9 is installed at the end of the fifth interface 115. The water supply valve 9 is used to supply water to the wall-mounted boiler system pipeline. The water supply valve 9 is existing technology and its specific structure is not described in detail in this manual.

[0037] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A water inlet valve with a post-throttle valve, characterized in that: The invention comprises a shell (1), wherein a first installation cavity (102) and a second installation cavity (105) are provided inside the shell (1), a flow sensor (2) is installed in the first installation cavity (102), a throttle valve (3) is installed in the second installation cavity (105), the first installation cavity (102) and the second installation cavity (105) are communicated through a connecting port (103), the shell (1) comprises a first cold water inlet (101) connected to the first installation cavity (102), and a plate exchange inlet (106) connected to the second installation cavity (105), and the first cold water inlet (101), the flow sensor (2), the connecting port (103), the throttle valve (3) and the plate exchange inlet (106) form a water inlet path.

2. The water inlet valve with a post-throttle valve according to claim 1, characterized in that: The second installation cavity (105) includes a limiting cavity (104), the throttle valve (3) is installed in the limiting cavity (104), and the end of the second installation cavity (105) away from the plate exchange inlet (106) is covered with a blocking cover (8), the blocking cover (8) includes a convex rib (81), the convex rib (81) abuts one end of the throttle valve (3), and the inner wall of the plate exchange inlet (106) is provided with an annular platform (112), and the annular platform (112) abuts the other end of the throttle valve (3).

3. The water inlet valve with a post-throttle valve according to claim 2, characterized in that: The blocking cover (8) is fixed to the housing (1) by screws.

4. The water inlet valve with a post-throttle valve according to claim 1, characterized in that: The first cold water inlet (101) is connected to a first joint (4), and a first filter element (6) is installed inside the first joint (4).

5. The water inlet valve with a post-throttle valve according to claim 4, characterized in that: A second filter element (7) is provided at one end of the first joint (4) located in the first cold water inlet (101), the second filter element (7) comprises a hemispherical cover (71), the hemispherical cover (71) protrudes toward the first installation cavity (102), a limiting platform (113) is provided between the first installation cavity (102) and the first cold water inlet (101), an annular surface (72) is provided on the side surface of the hemispherical cover (71), the end of the first joint (4) located in the first cold water inlet (101) abuts against the lower part of the annular surface (72), and the limiting platform (113) abuts against the upper part of the annular surface (72).

6. The water inlet valve with a post-throttle valve according to claim 1, characterized in that: A water channel (111) is provided inside the housing (1), and the housing (1) further comprises a plate exchange outlet (107) and a first interface (108) in communication with the water channel (111); the plate exchange outlet (107), the water channel (111) and the first interface (108) form a water outlet waterway.

7. The water inlet valve with a post-throttle valve according to claim 6, characterized in that: A second interface (109) is provided on the side of the housing (1), and the first interface (108), the second interface (109) and the water channel (111) are in communication.

8. The water inlet valve with a post-throttle valve according to claim 6, characterized in that: A third interface (110) is provided on the side of the housing (1), a second connector (5) is installed at the third interface (110), and the first interface (108), the third interface (110) and the waterway (111) are in communication.

9. The water inlet valve with a post-throttle valve according to claim 1, characterized in that: The first cold water inlet (101) and the first installation cavity (102) are eccentrically arranged.

10. The water inlet valve with a post-throttle valve according to claim 1, characterized in that: A fifth interface (115) is provided on the side of the housing (1), and a water supply valve (9) is installed at the end of the fifth interface (115).

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