A condensate water collection device and a gas-fired heating and hot water boiler

Abstract

The present invention discloses a condensate collection device and a gas heating and hot water furnace thereof. The condensate collection device includes: a housing assembly having a water collection chamber, a valve chamber, a water passage hole, a water inlet communicating with the water collection chamber, and a drain outlet communicating with the valve chamber. The water collection chamber is located above the valve chamber, and the valve chamber is communicated with the water collection chamber through the water passage hole; a valve assembly movably disposed up and down in the valve chamber for opening or closing the water passage hole. The valve assembly is provided with a collection groove having an open top, and the collection groove is located below the water passage hole and communicated with the water passage hole. The condensate collection device of the present invention can not only meet the requirements of condensate collection and discharge, but also maintain good sealing performance in the state where the condensate contains dust and impurities, avoid flue gas leakage, and improve the reliability of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of water heaters, and particularly to a condensate water collection device and a gas-fired heating water heater thereof. Background Art

[0002] In the condensate water collection device of some gas-fired heating water heaters on the market, a float ball for closing the condensate water outlet is provided in the condensate water cavity. As the condensate water in the condensate water cavity increases, the buoyancy force on the float ball continuously increases. When the condensate water volume reaches a certain water level, the float ball is floated up and the condensate water outlet is opened.

[0003] However, due to the presence of dust impurities in the condensate water or the design of the sealing surface structure, the sealing performance of the above-mentioned collection device is not good, and there is a phenomenon of flue gas leakage. Summary of the Invention

[0004] The present invention aims to solve at least one of the problems existing in the related art to a certain extent. For this purpose, the present invention provides a condensate water collection device, which not only meets the requirements of condensate water collection and discharge, but also can maintain good sealing performance in the state of condensate water with dust impurities, avoid flue gas leakage, and improve the reliability of the product.

[0005] The present invention also provides a gas-fired heating water heater with the condensate water collection device.

[0006] According to the above-provided condensate water collection device, it is realized through the following technical solutions:

[0007] A condensate water collection device includes: a housing assembly having a water collection chamber, a valve chamber, a water passing hole, a water inlet communicating with the water collection chamber, and a drain outlet communicating with the valve chamber. The water collection chamber is located above the valve chamber, and the valve chamber is communicated with the water collection chamber through the water passing hole; a valve assembly movably disposed up and down in the valve chamber for opening or closing the water passing hole. The valve assembly is provided with a collection groove with an open top, and the collection groove is located below the water passing hole and communicates with the water passing hole.

[0008] In some embodiments, the horizontal cross-sectional area of the open top of the collection groove is larger than the horizontal cross-sectional area of the outlet of the water passing hole.

[0009] In some embodiments, the collection groove includes an upper concave cavity communicating with the water passing hole, and the upper concave cavity is in the shape of a frustum of a cone or a frustum of a pyramid with a diameter narrowing from top to bottom.

[0010] In some embodiments, the collection groove further includes a lower concave cavity, the lower concave cavity is located below the upper concave cavity and communicates with the upper concave cavity, and the cross-sectional area of the lower end surface of the upper concave cavity is not less than the cross-sectional area of the upper end surface of the lower concave cavity.

[0011] In some embodiments, the valve assembly includes a valve core having a collection groove and an elastic member. The valve core is disposed below the water passage hole in a vertically movable manner for opening or closing the water passage hole. The elastic member is disposed between the valve core and the bottom surface of the valve chamber for pushing the valve core upward to close the water passage hole.

[0012] In some embodiments, the valve core includes a sealing section and a positioning section fixedly connected to each other. The sealing section is used for opening or closing the water passage hole, and the horizontal cross-sectional area of the positioning section is smaller than that of the sealing section. Part or all of the collection groove is disposed in the sealing section. The upper end of the elastic member is sleeved outside the positioning section and abuts against the sealing section.

[0013] In some embodiments, an upwardly extending annular positioning portion is fixedly provided on the bottom surface of the valve chamber. The annular positioning portion is provided with a water passage hole communicating with the drain port. The lower end of the elastic member is sleeved outside the annular positioning portion and abuts against the bottom surface of the valve chamber.

[0014] In some embodiments, a first sealing ring is provided between the water passage hole and the valve core. The first sealing ring is located outside the collection groove, and the first sealing ring is fixedly connected to the valve core or the lower edge of the water passage hole.

[0015] In some embodiments, the bottom surface of the water collection chamber is an inclined surface or an arc surface that slopes downward from top to bottom and faces the water passage hole.

[0016] In some embodiments, an upwardly extending annular water retaining rib is fixedly provided on the bottom surface of the valve chamber. The annular water retaining rib is located radially outside the drain port and the valve assembly, and the entire orthographic projection of the valve assembly is located radially inside the annular water retaining rib.

[0017] In some embodiments, a one-way valve and / or a filter screen are further included. The one-way valve is provided at the water inlet and / or the drain port. The filter screen is vertically disposed in the collection groove and the water passage hole for filtering the water flowing into the gap between the valve assembly and the lower end surface of the water passage hole, or the filter screen is disposed in the water collection chamber and covers the upper end surface of the water passage hole.

[0018] In some embodiments, the filter screen is annular, and its lower end abuts against the groove wall of the collection groove and is fixedly connected to the valve core, and its upper end is vertically movably inserted into the water passage hole.

[0019] Alternatively, a downwardly recessed annular groove is circumferentially provided on the groove wall of the collection groove. The annular groove communicates with the collection groove. The filter screen is annular, and its upper end is fixedly connected to the hole wall of the water passage hole, and its lower end is vertically movably inserted into the annular groove.

[0020] In some embodiments, a blockage detection device is provided on the housing assembly, and the blockage detection device is used to detect whether the water passing hole is blocked.

[0021] In some embodiments, the housing assembly includes a water collection box, an upper cover having a water inlet, and a lower cover having a drain outlet. The water collection box has an upper cavity with an upward opening, a lower cavity with a downward opening, and a water passing hole. The upper cavity communicates with the lower cavity through the water passing hole; the upper cover is detachably connected to the water collection box and covers the upward opening of the upper cavity, and the upper cover and the upper cavity enclose the water collection chamber; the lower cover is detachably connected to the water collection box and covers the downward opening of the lower cavity, and the lower cover and the lower cavity enclose the valve chamber.

[0022] In some embodiments, a second sealing ring is provided between the water collection box and the upper cover, and a third sealing ring is provided between the water collection box and the lower cover.

[0023] According to a gas-fired heating and hot water boiler provided above, it is realized by the following technical solutions:

[0024] A gas-fired heating and hot water boiler includes a water heater body, a condenser, and a condensate water collection device as described above. The condenser is arranged on the water heater body and is used for condensing flue gas. The condensate water collection device is arranged on the water heater body, and the water inlet communicates with the condensate water discharge outlet of the condenser.

[0025] Compared with the prior art, the present invention has at least the following beneficial effects:

[0026] 1. For the condensate water collection device of the present invention, by arranging the valve chamber below the water collection chamber and using a water passing hole to connect the valve chamber and the water collection chamber, the valve assembly is movably arranged up and down in the valve chamber and is used to open or close the water passing hole. In this way, the device can not only meet the requirements of condensate water collection and discharge, but also avoid flue gas leakage.

[0027] 2. By providing a collection groove with an open top on the valve assembly, the collection groove is located below the water passing hole and communicates with the water passing hole, so that the valve assembly has the function of collecting condensate water and dust impurities in the condensate water, preventing the valve assembly from being unable to reliably close the water passing hole due to the presence of dust impurities in the condensate water, ensuring good sealing performance in the state where there are dust impurities in the condensate water, further avoiding flue gas leakage, and improving the product reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of the condensate water collection device in Embodiment 1 of the present invention;

[0029] Figure 2It is an exploded view of the condensate collection device in Embodiment 1 of the present invention;

[0030] Figure 3 It is a cross-sectional view of the condensate collection device in Embodiment 1 of the present invention;

[0031] Figure 4 It is Figure 3 A partial enlarged view of part A in

[0032] Figure 5 It is a cross-sectional view of the condensate collection device in Embodiment 2 of the present invention;

[0033] Figure 6 It is Figure 5 A partial enlarged view of part B in

[0034] In the figure: 1 - housing assembly, 101 - water collection chamber, 102 - valve chamber, 11 - water collection box, 112 - upper cavity, 113 - water passage hole, 114 - upper sealing groove, 12 - upper cover, 121 - water inlet, 13 - lower cover, 131 - drain port, 132 - annular positioning portion, 133 - water passing hole, 134 - annular water retaining rib, 135 - mounting portion, 14 - second sealing ring, 15 - third sealing ring; 2 - valve assembly, 21 - valve core, 2101 - sealing section, 2102 - positioning section, 211 - collection groove, 2111 - upper concave cavity, 2112 - lower concave cavity, 212 - annular groove, 22 - elastic member, 23 - first sealing ring; 3 - filter screen. Detailed implementation manners

[0035] The following embodiments illustrate the present invention, but the present invention is not limited by these embodiments. Modifying the specific implementation manners of the present invention or making equivalent replacements for some technical features without departing from the spirit of the present invention's solution shall all be covered within the scope of the technical solution claimed by the present invention.

[0036] Embodiment 1

[0037] Referring to Figures 1-3 , this embodiment provides a condensate collection device, which is applied to a gas-fired heating water heater and includes a housing assembly 1 and a valve assembly 2. Among them, the housing assembly 1 has a water collection chamber 101, a valve chamber 102, a water passage hole 113, a water inlet 121 communicating with the water collection chamber 101, and a drain port 131 communicating with the valve chamber 102. The water collection chamber 101 is used to collect the condensate flowing in from the water inlet 121. The valve chamber 102 is located below the water collection chamber, and the valve chamber 102 is communicated with the water collection chamber 101 through the water passage hole 113.

[0038] The valve assembly 2 is disposed in the valve chamber 102 so as to be movable up and down, and is used to open or close the water passing hole 113. The valve assembly 2 is provided with a collecting groove 211 with an open top. The collecting groove 211 is located below the water passing hole and communicates with the water passing hole 113. In this way, through the collecting groove 211, the valve assembly 2 has the function of collecting condensed water and dust impurities in the condensed water, preventing the valve assembly 2 from being unable to reliably close the water passing hole 113 due to the presence of dust impurities in the condensed water, thereby avoiding flue gas leakage and improving the product reliability.

[0039] When the total gravity of the condensed water in the collecting groove 211, the water passing hole 113 and the water collecting chamber 101 is less than the preset valve opening value, the valve assembly 2 tightly presses the lower end surface of the water passing hole 113 and closes the water passing hole 113. At this time, the condensed water in the water collecting chamber 101 cannot flow into the valve chamber 102 through the water passing hole 113, that is, the discharge of condensed water stops, and the dust impurities in the condensed water gather or deposit in the collecting groove 211, preventing the dust impurities from entering the mating part between the valve assembly 2 and the water passing hole 113. When the gravity of the condensed water in the water collecting chamber 101 is greater than the preset valve opening value, the condensed water pushes the valve assembly 2 to move downward so that a gap is formed between the valve assembly 2 and the lower end surface of the water passing hole 113. At this time, the condensed water in the water collecting chamber 101 sequentially flows into the valve chamber 102 through the water passing hole 113 and the gap, and is discharged out of the device and the gas heating hot water furnace through the drain port 131. During this process, since the water level of the condensed water is still higher than the gap, a water seal is formed, preventing the flue gas from leaking out through the gap. In addition, since the dust impurities in the condensed water gather or deposit in the collecting groove 211, the dust impurities cannot flow upward into the gap, preventing the valve assembly 2 from being unable to reliably close the water passing hole 113 due to the presence of dust impurities in the condensed water, thereby avoiding flue gas leakage and improving the product reliability.

[0040] After the condensed water is drained away, as the condensed water in the water collecting chamber 101 decreases, the valve assembly 2 moves upward. When the total gravity of the remaining or residual condensed water is less than the preset valve opening value, the valve assembly 2 tightly presses the lower end surface of the water passing hole 113 again and closes the water passing hole 113, stopping the discharge of condensed water.

[0041] It can be seen that by locating the valve chamber 102 below the water collecting chamber 101 and using the water through hole 113 to connect the valve chamber 102 and the water collecting chamber 101, the valve assembly 2 is arranged in the valve chamber 102 so as to be movable up and down for opening or closing the water through hole 113. In this way, the device can not only meet the requirements of condensate collection and discharge, but also avoid flue gas leakage. In addition, by providing a collecting groove 211 with an open top on the valve assembly 2, the collecting groove 211 is located below the water through hole and communicates with the water through hole 113, so that the valve assembly 2 has the function of collecting condensate and dust impurities in the condensate, preventing the valve assembly 2 from being unable to reliably close the water through hole 113 due to the presence of dust impurities in the condensate, ensuring good sealing performance in the state where there are dust impurities in the condensate, further avoiding flue gas leakage and improving the product reliability.

[0042] Referring to FIGS. 3-4, in this embodiment, the collecting groove 211 and the water through hole 113 are coaxially arranged, and the horizontal cross-sectional area of the open top of the collecting groove 211 is larger than the horizontal cross-sectional area of the outlet of the water through hole 113, that is, the diameter D2 of the open top of the collecting groove 211 is larger than the diameter D1 of the outlet of the water through hole 113, so that the cross-sectional area of the upper end surface of the collecting groove 211 is larger than the cross-sectional area of the lower end surface of the water through hole 113. In this way, the collecting groove 211 completely covers the outlet of the water through hole 113, ensuring that the collecting groove 211 can receive or hold all the dust impurities flowing down from the water through hole 113, and at the same time preventing the condensate flowing down from the water through hole 113 from flowing to the edge of the upper end surface of the collecting groove 211.

[0043] Reference Figures 1-3 Referring to FIGS., the housing assembly 1 includes a water collecting box 11, an upper cover 12 and a lower cover 13. Among them, the water collecting box 11 has an upper cavity 112 with an upward opening, a lower cavity (not shown in the figure) with a downward opening and a water through hole 113. The upper cavity 112 and the lower cavity are connected through the water through hole 113. The upper cover 12 is detachably connected to the water collecting box 11 and covers the upward opening of the upper cavity 112. The upper cover 12 and the upper cavity 112 enclose to form a water collecting chamber 101, and a water inlet 121 is provided on the upper cover 12. The lower cover 13 is detachably connected to the water collecting box 11 and covers the downward opening of the lower cavity. The lower cover 13 and the lower cavity enclose to form a valve chamber 102, and a drain port 131 is provided on the lower cover 13. Thus, by designing the housing assembly 1 as a split water collecting box 11, an upper cover 12 and a lower cover 13, the upper and lower ends of the water collecting box 11 are respectively detachably connected to the upper cover 12 and the lower cover 13, which is convenient for the processing and manufacturing of each component, convenient for assembling the valve assembly 2 into the valve chamber 120, and also convenient for the later maintenance of the valve assembly 2.

[0044] In this embodiment, the water collecting box 11 is formed with a through hole that is open at the bottom and open at the top. Inside the water collecting box 11, a partition part (not shown in the figure) having a water passing hole 113 is provided. The radially outer end of the partition part is integrally formed with the hole wall of the through hole, and the partition part divides the through hole into an upper cavity 112 and a lower cavity that are arranged at intervals up and down. This partition part constitutes the top of the valve chamber 102 and also constitutes the bottom of the water collecting chamber 101.

[0045] The bottom surface of the water collecting chamber 101 (i.e., the top surface of the partition part) is an inclined surface that slopes downward and toward the water passing hole 113 from top to bottom. The included angle between this inclined surface and the horizontal plane is between 15° and 75°. Of course, the top surface of the partition part can also be designed as an arc surface. In this way, the bottom surface of the water collecting chamber 101 plays a guiding role, facilitating the guiding of the condensed water and the dust impurities contained therein in the water collecting chamber 101 to the water passing hole 113. The top surface of the valve chamber 102 (i.e., the bottom surface of the partition part) is an inclined surface parallel to this inclined surface. In other embodiments, the top surface of the valve chamber 102 can be designed as a plane parallel to the horizontal plane.

[0046] The upper cover 12 is detachably connected to the upper end of the water collecting box 11 by means of buckles, threads, or screws, etc. In this embodiment, the upper cover 12 is detachably connected to the water collecting box 11 by means of buckles. The housing assembly 1 further includes a second sealing ring 14, which is arranged between the water collecting box 11 and the upper cover 12 to make the upper cover 12 be sealingly connected to the water collecting box 11. A downwardly recessed and upwardly opening upper sealing groove 114 is provided circumferentially on the top surface of the water collecting box 11. The upper sealing groove 114 is located on the periphery of the upper cavity 113, and the second sealing ring 14 is fitted into the upper sealing groove 114 and tightly abuts against the upper cover 12.

[0047] The lower cover 13 is detachably connected to the lower end of the water collecting box 11 by means of buckles, threads, or screws, etc. In this embodiment, the lower cover 13 is detachably connected to the water collecting box 11 by means of threads. The housing assembly 1 further includes a third sealing ring 15, which is arranged between the water collecting box 11 and the lower cover 13 to make the lower cover 13 be sealingly connected to the water collecting box 11. An upwardly extending annular water retaining rib 134 is fixedly provided on the bottom surface of the valve chamber 102. The annular water retaining rib 134 is integrally formed with the lower cover 13 and is located between the radially inner side of the third sealing ring 15 and the drain port 131. An upwardly opening lower sealing groove (in the figure) is formed between the outer ring wall of the lower cover 13 and the annular water retaining rib 134. The third sealing ring 15 is installed in the lower sealing groove and is clamped between the lower end surface of the water collecting box 11 and the lower cover 13. In this way, the annular water retaining rib 134 can prevent the water in the valve chamber 102 from flowing toward the third sealing ring 15.

[0048] In this embodiment, the annular water retaining rib 134 is located radially outside the drain port 131 and the valve assembly 2, and the entire orthographic projection of the valve assembly 2 is located radially inside the annular water retaining rib 134. In this way, when the condensed water flows into the valve chamber 102 from the gap between the valve assembly 2 and the lower end surface (i.e., the partition portion) of the water passing hole 113, the annular water retaining rib 134 can play a role in retaining water and prevent the condensed water flowing down from the gap from flowing into the third sealing ring 15.

[0049] To position the valve assembly 2, refer to Figure 3 , an upwardly extending annular positioning portion 132 is fixedly provided on the bottom surface of the valve chamber 102 (i.e., the lower cover 13). The annular positioning portion 132 is provided with water passing holes 133 that communicate with the drain port 131 and the valve chamber 102 respectively. In this way, the lower end of the valve assembly 2 is positioned by the annular positioning portion 132, and by providing the water passing holes 133 on the annular positioning portion 132, it is ensured that the setting of the annular positioning portion 132 will not affect the discharge of the condensed water in the valve chamber 102. In addition, two outwardly extending mounting portions 135 are integrally formed on the outer side wall of the lower cover 13. Refer to Figure 1 , and through the two mounting portions 135, it is convenient to detachably mount the device on the gas-fired heating and hot water furnace.

[0050] To detect whether the water passing hole 113 is blocked, a blockage detection device (not shown in the figure) is provided on the housing assembly 1. The blockage detection device is mounted on the upper cover 12 and is used to detect whether the water passing hole 113 is blocked. Optionally, the blockage detection device can be a water level sensor for detecting the water level in the water collection chamber 101. When the water level sensor detects that the water level in the water collection chamber is greater than the set water level threshold, and this set water level threshold is greater than the water level corresponding to the preset valve opening value, it can be directly determined that the water passing hole 113 is blocked, or if the water level is greater than the set water level threshold for a period of time, it is determined that the water passing hole 113 is blocked; otherwise, it can be judged that the water passing hole 113 is not blocked.

[0051] Refer to Figures 3-4, the collection tank 211 includes an upper concave cavity 2111 communicating with the water passing hole 113. The upper concave cavity 2111 is in the shape of a frustum of a cone or a frustum of a pyramid with a diameter narrowing from top to bottom. In this way, it is convenient to guide the condensed water and the dust impurities in the condensed water to the lowest position of the upper concave cavity 2111. In this embodiment, the collection tank 211 further includes a lower concave cavity 2112. The lower concave cavity 2112 is located below the upper concave cavity 2111 and communicates with the upper concave cavity 2111. The cross-sectional area of the lower end surface of the upper concave cavity 2111 is not less than the cross-sectional area of the upper end surface of the lower concave cavity 2112. In this way, through the cooperation of the connected lower concave cavity 2112 and the upper concave cavity 2111, on the one hand, the collection capacity of the condensed water and the dust impurities contained therein is increased. On the other hand, the dust impurities collected in the upper concave cavity 2111 are less likely to flow upward to the gap, thereby further improving the reliability of the valve assembly 2 to close the water passing hole 113, ensuring good sealing performance in the state where there are dust impurities in the condensed water, and improving the product reliability.

[0052] Optionally, the lower concave cavity 2112 is in any one of a cylindrical shape, a prismatic shape, a frustum of a cone with a diameter increasing from top to bottom, or a frustum of a pyramid with a diameter increasing from top to bottom. In this embodiment, the lower concave cavity 2112 is taken as an example of a cylindrical shape. In other embodiments, the lower concave cavity 2112 can be omitted. After omitting the lower concave cavity 2112, the volume of the upper concave cavity can be correspondingly enlarged to ensure that the collection tank has a large volume and guarantee the collection capacity.

[0053] Reference Figures 2-4 , the valve assembly 2 includes a valve core 21 and an elastic member 22. The valve core 21 is movably arranged up and down below the water passing hole 113 for opening or closing the water passing hole 113. A collection tank 211 communicating with the water passing hole 113 is provided on the valve core 21. In this way, the valve core 21 not only has the function of opening / closing the water passing hole, but also has the function of collecting condensed water and the dust impurities contained therein. The elastic member 22 is arranged between the valve core 21 and the bottom surface of the valve chamber 102. In this embodiment, the upper end of the elastic member 22 abuts against or is connected to the valve core 21, and the lower end abuts against or is connected to the bottom surface of the valve chamber 102 for pushing the valve core 21 upward to close the water passing hole 113.

[0054] In this embodiment, the upward elastic force of the elastic member 22 is greater than the gravity of the valve core 21, and the preset valve opening value is the difference between the upward elastic force of the elastic member 22 and the gravity of the valve core 21. When the total gravity of the condensed water in the collection tank 211, the water passing hole 113 and the water collection chamber 101 is less than the preset valve opening value, that is, when the total gravity of the condensed water is less than the difference value, the elastic force of the elastic member 22 presses the valve core 21 tightly against the lower end surface of the water passing hole 113, so that the valve core 21 tightly closes the water passing hole 113. At this time, the collection device is still in a sealed state, and the condensed water generated by the operation of the gas heating hot water furnace is always stored in the water collection chamber 101, and the flue gas generated by the operation of the gas heating hot water furnace cannot escape outward through the collection device, effectively avoiding flue gas leakage.

[0055] When the condensed water stored in the water collecting chamber 101 increases until the total gravity of the condensed water is greater than the preset valve opening value, a gap is formed between the valve core 21 and the lower end surface (i.e., the partition part) of the water passing hole 113. The condensed water in the water collecting chamber 101 flows into the valve chamber 102 through this gap and is discharged to the outside of the device through the drain port. When the condensed water is drained away, the total gravity of the condensed water is less than the preset valve opening value, and the valve core 21 is pressed against the partition part by the elastic member 22 again to close the water passing hole 113 and stop the discharge of the condensed water.

[0056] The valve core 21 includes a sealing section 2101 and a positioning section 2102 that are fixedly connected as a whole. The sealing section 2101 is used to open or close the water passing hole 113. The horizontal cross-sectional area of the positioning section 2102 is smaller than that of the sealing section 2101. Part or all of the collecting groove 211 is arranged on the sealing section 2101. In this embodiment, an upper concave cavity 2111 of the collecting groove 211 is provided on the sealing section 2101, so that the sealing section 2101 not only has the function of opening / closing the water passing hole, but also has the function of collecting condensed water and the dust impurities contained therein. A lower concave cavity 2112 of the collecting groove 211 is provided on the positioning section 2102, so that in addition to the positioning section 2102 having the function of collecting condensed water and the dust impurities contained therein, it can also be used for positioning the elastic member 22.

[0057] The upper end of the elastic member 22 is sleeved outside the positioning section 2102 and abuts against the sealing section 2101, and the lower end is sleeved outside the annular positioning portion 132 and abuts against the bottom surface of the valve chamber 102.

[0058] In order to improve the sealing performance between the valve core 21 and the partition part. The valve assembly 2 further includes a first sealing ring 23. A first sealing ring 23 is provided between the water passing hole 113 and the sealing section 2101 of the valve core 21. The first sealing ring 23 is located outside the collecting groove 211, and the first sealing ring 23 is fixedly connected to the lower edge of the valve core 21 or the water passing hole 113. In this embodiment, the first sealing ring 23 is fixedly connected to the valve core 21.

[0059] In other embodiments, the condensed water collecting device may further include a check valve. A check valve is provided at the water inlet 121 and / or the drain port 131. The check valve at the water inlet 121 is used to prevent the condensed water in the water collecting chamber from flowing back to the water inlet 121. The check valve at the drain port 131 is used to prevent water from flowing back into the valve chamber 102 from the drain port 131 and to prevent odor from flowing back into the device through the drain port 131.

[0060] This embodiment also provides a gas heating and hot water boiler, which includes a boiler body, a condenser, and a condensate collection device as described above. The condenser is disposed on the boiler body and is used for condensing flue gas. The condensate collection device is disposed on the boiler body, and the water inlet 121 of the condensate collection device is communicated with the condensate discharge port of the condenser. Thus, by communicating the water inlet 121 of the condensate collection device with the condensate discharge port of the condenser, the condensate collection device can not only meet the requirements of condensate collection and discharge, but also ensure good sealing performance in the state where there are dust impurities in the condensate, avoid flue gas leakage, and improve product reliability.

[0061] Embodiment 2

[0062] Reference Figures 5-6 In this embodiment, the difference from Embodiment 1 is that the condensate collection device further includes a filter screen 3. In this embodiment, the filter screen 3 is annular, and is vertically disposed in the collection tank 211 and the water passing hole 113, and is used for filtering the water flowing into the gap between the valve assembly 2 and the lower end surface of the water passing hole 113. In other embodiments, the filter screen 3 may be planar, and is disposed in the water collection cavity 101 and covers the upper end surface of the water passing hole 113, and is used for filtering the water flowing into the water passing hole 113.

[0063] It can be seen that by adding the filter screen 3, the condensate can be filtered, preventing the dust impurities in the condensate from flowing into the gap between the valve core 21 in the valve assembly 2 and the lower end surface of the water passing hole 113, further ensuring good sealing performance of the device in the state where there are dust impurities in the condensate, avoiding flue gas leakage, and improving product reliability.

[0064] In this embodiment, an annular groove 212 recessed downward is provided in the circumferential direction of the groove wall of the collection tank 211, and the annular groove 212 is communicated with the collection tank 211. The filter screen 3 is annular, and its upper end is inserted into the water passing hole 113 and fixedly connected to the hole wall of the water passing hole 113, and the lower end is inserted into the annular groove 212 in a vertically movable manner, so that the valve core assembly 2 can move up and down relative to the filter screen 3 and the water passing hole 113.

[0065] Of course, the lower end of the filter screen 3 can also be designed to be inserted into the annular groove 212 and fixedly connected to the valve core 21, and the upper end is inserted into the water passing hole 113 in a vertically movable manner, so that the valve core assembly 2 can drive the filter screen 3 to move up and down. In other embodiments, the annular groove 212 can be omitted, and the lower end of the filter screen 3 is changed to abut against the groove wall of the collection tank 211 and fixedly connected to the valve core 21, and the upper end is inserted into the water passing hole 113 in a vertically movable manner.

[0066] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention.

Claims

1. A condensate water collection device, characterized in that, Comprising: A housing assembly (1) having a water collection chamber (101), a valve chamber (102), a water passage hole (113), a water inlet (121) communicating with the water collection chamber (101), and a drain outlet (131) communicating with the valve chamber (102), wherein the water collection chamber (101) is located above the valve chamber (102), and the valve chamber (102) is communicated with the water collection chamber (101) through the water passage hole (113); A valve assembly (2) movably disposed up and down within the valve chamber (102) for opening or closing the water passage hole (113), the valve assembly (2) being provided with a collection groove (211) having an open top, the collection groove (211) being located below the water passage hole (113) and communicating with the water passage hole (113), and the horizontal cross-sectional area of the open top of the collection groove (211) being larger than the horizontal cross-sectional area of the outlet of the water passage hole (113); The collection groove (211) includes an upper concave cavity (2111) communicating with the water passage hole (113), and the upper concave cavity (2111) is in the shape of a frustum of a cone or a frustum of a pyramid with a diameter narrowing from top to bottom; An upwardly extending annular water retaining rib (134) is fixedly provided on the bottom surface of the valve chamber (102), the annular water retaining rib (134) being located radially outside the drain outlet (131) and the valve assembly (2), and the entire orthographic projection of the valve assembly (2) being located radially inside the annular water retaining rib (134).

2. The condensate water collection device according to claim 1, characterized in that, The collection groove (211) further includes a lower concave cavity (2112), the lower concave cavity (2112) being located below the upper concave cavity (2111) and communicating with the upper concave cavity (2111), and the cross-sectional area of the lower end surface of the upper concave cavity (2111) being not less than the cross-sectional area of the upper end surface of the lower concave cavity (2112).

3. The condensate water collection device according to claim 1 or 2, characterized in that, The valve assembly (2) includes a valve core (21) having a collection groove (211) and an elastic member (22), the valve core (21) being movably disposed up and down below the water passage hole (113) for opening or closing the water passage hole (113); the elastic member (22) is disposed between the valve core (21) and the bottom surface of the valve chamber (102) for pushing the valve core (21) upward to close the water passage hole (113).

4. The condensate water collection device according to claim 3, characterized in that, The valve core (21) includes a sealing section (2101) and a positioning section (2102) fixedly connected to each other, the sealing section (2101) being used for opening or closing the water passage hole (113), and the horizontal cross-sectional area of the positioning section (2102) being smaller than the horizontal cross-sectional area of the sealing section (2101); part or all of the collection groove (211) is disposed on the sealing section (2101); the upper end of the elastic member (22) is sleeved outside the positioning section (2102) and abuts against the sealing section (2101).

5. The condensate water collection device according to claim 3, characterized in that, An annular positioning portion (132) extending upward is fixedly provided on the bottom surface of the valve chamber (102), and a water passing hole (133) communicating with the drain port (131) is formed in the annular positioning portion (132); the lower end of the elastic member (22) is sleeved outside the annular positioning portion (132) and abuts against the bottom surface of the valve chamber (102).

6. The condensate water collection device according to claim 3, characterized in that, A first sealing ring (23) is provided between the water passing hole (113) and the valve core (21), the first sealing ring (23) is located outside the collection groove (211), and the first sealing ring (23) is fixedly connected to the valve core (21) or the lower end edge of the water passing hole (113).

7. The condensate water collection device according to claim 1, characterized in that, The bottom surface of the water collection chamber (101) is an inclined surface or an arc surface that slopes downward and toward the water passing hole (113).

8. The condensate water collection device according to claim 1, characterized in that, It further includes a one-way valve and / or a filter screen (3), and the one-way valve is provided at the water inlet (121) and / or the drain port (131); the filter screen (3) is vertically arranged in the collection groove (211) and the water passing hole (113) for filtering the water flowing into the gap between the valve assembly (2) and the lower end surface of the water passing hole (113), or the filter screen (3) is arranged in the water collection chamber (101) and covers the upper end surface of the water passing hole (113).

9. The condensate water collection device according to claim 8, characterized in that, The filter screen (3) is annular, and its lower end abuts against the groove wall of the collection groove (211) and is fixedly connected to the valve core (21), and the upper end is movably inserted into the water passing hole (113) in the vertical direction; Alternatively, an annular groove (212) recessed downward is circumferentially provided on the groove wall of the collection groove (211), the annular groove (212) communicates with the collection groove (211), the filter screen (3) is annular, and its upper end is fixedly connected to the hole wall of the water passing hole (113), and the lower end is movably inserted into the annular groove (212) in the vertical direction.

10. The condensate water collection device according to claim 1, characterized in that, A blockage detection device is provided on the housing assembly (1), and the blockage detection device is used to detect whether the water passing hole (113) is blocked.

11. The condensate water collection device according to claim 1 or 2 or any one of claims 7 - 10, characterized in that, The housing assembly (1) includes a water collection box (11), an upper cover (12) having a water inlet (121), and a lower cover (13) having a drain port (131). The water collection box (11) has an upper cavity (112) with an upward opening, a lower cavity with a downward opening, and a water passing hole (113). The upper cavity (112) is communicated with the lower cavity through the water passing hole (113); The upper cover (12) is detachably connected to the water collection box (11) and covers the upward opening of the upper cavity (112). The upper cover (12) and the upper cavity (112) enclose the water collection chamber (101); The lower cover (13) is detachably connected to the water collection box (11) and covers the downward opening of the lower cavity. The lower cover (13) and the lower cavity enclose the valve chamber (102).

12. The condensate water collection device according to claim 11, characterized in that, A second sealing ring (14) is provided between the water collection box (11) and the upper cover (12), and a third sealing ring (15) is provided between the water collection box (11) and the lower cover (13).

13. A gas - fired heating and hot water boiler, characterized in that, It includes a water heater body, a condenser, and a condensate water collection device as described in any one of claims 1-12. The condenser is disposed on the water heater body and is used for condensing flue gas. The condensate water collection device is disposed on the water heater body, and the water inlet communicates with the condensate water discharge port of the condenser.

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