Water collecting box and gas water heater

Abstract

The invention discloses a water collecting box and a gas water heater, the water collecting box is used for the gas water heater with a condensate water outlet, the water collecting box comprises a box body and a module mounting part, the box body is provided with a water storage cavity and a water inlet communicated with the water storage cavity, and the water inlet is used for being communicated with the condensate water outlet; the module mounting part is arranged on the box body, and the module mounting part is used for integrally mounting corresponding functional modules. The water collecting box is provided with the module mounting part, so that different functional modules on the gas water heater can be integrated on the box body, the space utilization rate is high, and the water collecting box is suitable for being mounted on different types of gas water heaters and used for collecting condensate water without limitation.

Description

Technical Field

[0001] The present invention relates to the technical field of gas water heaters, and in particular to a water collecting box and a gas water heater. Background Art

[0002] At present, gas water heaters have become one of the main water supply appliances on the market. Gas water heaters are 10%-15% more energy efficient than non-condensing ones, and have good market potential in energy conservation and emission reduction. Condensing water heaters will discharge condensed water during use, which is formed after the water vapor in the flue gas condenses. Since natural gas contains a certain amount of H2S, SO3 and NO2 will be generated after mixing with air and burning, so the condensed water is acidic with a pH of about 3. Therefore, it is necessary to equip it with an independent dedicated condensed water drainage pipe to drain it, or to equip it with a condensed water collector to collect and treat it.

[0003] However, directly draining the condensed water causes a waste of water resources. When a condensed water collector is used to collect and process the condensed water, the gas water heater is limited by the internal space. The volume and installation position of the water collection box need to be set according to different types of gas water heaters, resulting in low space utilization. Summary of the invention

[0004] The main purpose of the present invention is to provide a water collecting box and a gas water heater, aiming to solve the problem of low space utilization of gas water heaters in the prior art.

[0005] To achieve the above-mentioned purpose, the water collecting box proposed in the present invention is used for a gas water heater with a condensed water discharge port, comprising:

[0006] A box body having a water storage cavity and a water inlet connected to the water storage cavity, wherein the water inlet is used to connect to a condensed water discharge port; and

[0007] The module installation part is arranged on the box body, and the module installation part is used for integrating and installing the corresponding functional modules.

[0008] A water collecting box, used for a gas water heater with a condensed water discharge port, characterized in that the water collecting box comprises:

[0009] A box body, comprising a water storage cavity and a water inlet connected to the water storage cavity, wherein the water inlet is used to connect to a condensed water discharge port; and

[0010] The module installation part is arranged on the box body, and the module installation part is used for integrating and installing the corresponding functional modules.

[0011] Optionally, the box body includes a cover body and a box body, the box body has a receiving groove with one end open, the cover body is covered on the open end of the box body to form the water storage cavity, and the water inlet is arranged on the cover body.

[0012] Optionally, the module mounting portion includes at least one of a pumping device mounting portion, an exhaust device mounting portion, a filtering device mounting portion, and a liquid level detection device mounting portion.

[0013] Optionally, the water pumping device installation portion includes a first installation groove for the water pumping device to be installed and fixed, and a quick-connect pipe communicating with the first installation groove, wherein the quick-connect pipe has an outlet end and an inlet end;

[0014] The inlet end of the quick-connect pipe is placed in the water storage cavity, and the outlet end of the quick-connect pipe is used to be connected to the water pumping device.

[0015] Optionally, the distance between the inlet end of the quick-connect pipe and the bottom of the water storage chamber is not less than 5 mm.

[0016] Optionally, a baffle is provided in the water storage chamber, and the baffle is arranged around the outer circumference of the quick-connect pipe. The inner wall of the baffle and the outer wall of the quick-connect pipe cooperate to form a water pumping space, and the baffle has a filtering hole for connecting the water pumping space and the water storage tank.

[0017] Optionally, the installation portion of the liquid level detection device includes a first through hole communicating with the water storage chamber.

[0018] Optionally, the first through hole is provided in the cover body, and a fixing portion is protruded from the periphery of the first through hole toward the inside of the water storage cavity for installation and fixing of the liquid level detection device.

[0019] Optionally, the water collecting box further comprises a liquid level detection device, and the liquid level detection device is installed on the fixing part;

[0020] The liquid level detection device is provided with a low trigger liquid level and a high trigger liquid level;

[0021] The distance between the high-level triggering liquid level and the inlet end of the quick-connect pipe is not less than 5 mm, and the high-level triggering liquid level is higher than the inlet end of the quick-connect pipe.

[0022] Optionally, the height of the baffle is greater than the height of the inlet end of the quick-connect pipe but less than the height of the high-level triggering liquid level.

[0023] Optionally, the exhaust device mounting portion includes an exhaust port connected to the water storage chamber.

[0024] Optionally, the exhaust port is arranged on the cover body, and a first mounting portion is protruded from the periphery of the exhaust port in a direction away from the cover body.

[0025] Optionally, the water collecting box further comprises a filtering device, and the filtering device comprises:

[0026] A filter housing is mounted on the cover body, the filter housing has a second water inlet and a second water outlet, the filter housing comprises a filter cartridge and a filter cover, one end of the filter cartridge is open, the other end of the filter cartridge is provided with the second water outlet, the second water outlet is communicated with the water inlet of the box body; the cover body is provided on the open end of the filter body, and the second water inlet is provided on the cover body;

[0027] The filter element is arranged in the filter housing, the second water inlet, the filter element and the second water outlet are connected in sequence to form a main filtering channel, and a bypass branch connecting the second water inlet and the second water outlet is arranged between the filter element and the filter housing.

[0028] Optionally, the filter housing is provided with a liquid sealing tube extending into the water storage cavity, and the distance between the end surface of the liquid sealing tube away from the cover body and the connection surface between the cover body is not less than 5mm and not more than 15mm.

[0029] Optionally, the filter housing and the cover body are integrally formed.

[0030] Optionally, a sewage outlet communicated with the water storage cavity is provided at the bottom of the box body, and the water collecting box further comprises a plugging cover for sealing the sewage outlet.

[0031] The present invention also provides a gas water heater, comprising the water collecting box as described in any one of the above items.

[0032] The technical solution of the present invention adopts the method of inputting the condensed water of the gas water heater from the water inlet into the water storage cavity of the box body for collection and storage. A module mounting portion is provided on the box body for integrating and installing corresponding functional modules. In this way, different functional modules on the gas water heater can be integrated on the box body, and the space utilization rate is high. The water collection box is suitable for installation on different gas water heater models to collect condensed water without restriction. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0034] Figure 1 It is a structural schematic diagram of a first embodiment of a gas water heater of the present invention;

[0035] Figure 2 It is a structural schematic diagram of a second embodiment of a gas water heater of the present invention;

[0036] Figure 3It is a structural schematic diagram of a third embodiment of a gas water heater of the present invention;

[0037] Figure 4 It is a structural schematic diagram of a fourth embodiment of a gas water heater of the present invention;

[0038] Figure 5 It is a structural schematic diagram of a fifth embodiment of a gas water heater of the present invention;

[0039] Figure 6 It is a structural schematic diagram of a sixth embodiment of a gas water heater of the present invention;

[0040] Figure 7 It is a structural schematic diagram of a seventh embodiment of a gas water heater of the present invention;

[0041] Figure 8 It is a structural schematic diagram of an eighth embodiment of a gas water heater of the present invention;

[0042] Fig. 9 It is a structural schematic diagram of a ninth embodiment of a gas water heater of the present invention;

[0043] Fig.10 It is a structural schematic diagram of a tenth embodiment of a gas water heater of the present invention;

[0044] Fig.11 It is a structural schematic diagram of an embodiment of a condensed water recovery and treatment device of the present invention;

[0045] Fig.12 for Fig.11 Exploded diagram of

[0046] Fig.13 for Fig.11 A schematic diagram of the structure of the filter device and the water collection box;

[0047] Fig.14 for Fig.13 A cross-sectional view from the first perspective;

[0048] Fig.15 It is a schematic structural diagram of an embodiment of a pump-valve integrated system of the present invention.

[0049] Description of Figure Numbers:

[0050]

[0051]

[0052] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0053] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0054] It should be noted that if a directional indication is involved in the embodiment of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0055] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0056] Gas water heaters, also known as gas water heaters, are gas appliances that use gas as fuel and transfer heat to cold water flowing through a heat exchanger through combustion heating to prepare hot water. Gas water heaters are mainly composed of valve body assemblies, main burners, low-fire burners, heat exchangers, safety devices, etc. They also include flues for flue-type water heaters and forced exhaust devices for forced exhaust water heaters. The valve body assembly controls the working procedures of the entire water heater, and it includes water valves, gas valves, micro switches, igniters, etc. When installing a water heater, valves should be installed on the water inlet pipe, outlet pipe, and gas pipe.

[0057] After a heat exchange, ordinary gas water heaters usually produce medium-temperature flue gas with a temperature of about 180°C. XThe flue gas has a high content and has water vapor with high heat energy content. If it is discharged directly, it will not only pollute the environment, but also cause a large amount of heat energy loss. In order to avoid environmental pollution and waste of heat energy caused by direct flue gas discharge, condensing gas water heaters came into being. Condensing gas water heaters use condensing heat exchange devices for secondary heat exchange to preheat the water, recover the latent heat of the medium-temperature flue gas, improve the utilization rate of the gas, and greatly reduce the temperature of the flue gas discharged from the machine. Because the water vapor in the medium-temperature flue gas will condense into liquid condensed water while releasing latent heat, and the CO2 and NO in the flue gas X Acidic gases such as condensate will dissolve in condensate, making it corrosive. Therefore, condensing gas water heaters usually need to be equipped with a condensate drain pipe to discharge the acidic condensate outside the machine, and a neutralizer must be used to remove the corrosiveness of the condensate before discharge. For the treatment of condensate, the user can place a water container for temporary storage and pour it out regularly; or set a drain pipe to connect to the user's home sewer. It can be seen that the existence of the condensate drain pipe and the discharge of condensate bring many inconveniences to users and are not beautiful; direct discharge of condensate will also cause waste of water resources.

[0058] The present invention provides a gas water heater, which is a condensing gas water heater.

[0059] In the embodiment of the present invention, Figures 1 to 15 As shown, the gas water heater 1 includes a device body 20 and a condensed water recovery and treatment device 10, wherein the device body 20 includes a main heat exchanger 22 for primary heat exchange of flue gas after combustion and a condensation heat exchanger 23 for secondary heat exchange of flue gas after primary heat exchange; the condensed water recovery and treatment device 10 is used to recover the condensed water generated by the condensation heat exchanger 23 and inject the collected condensed water into the water system 21. In this way, through the setting of the condensed water recovery and treatment device 10, the condensed water can be effectively injected into the water system 21 of the gas water heater 1, avoiding direct discharge of the condensed water, thereby avoiding waste of water resources, and also avoiding inconvenience caused to users by improper location of direct discharge of the condensed water.

[0060] The equipment body 20 generally includes a shell, a burner, a main heat exchanger 22, a condensing heat exchanger 23 and a water system 21; the water system 21 is connected to an external water source, and after the external water source passes through the water system 21, it exchanges heat through the main heat exchanger 22 and the condensing heat exchanger 23, thereby outputting hot water required by the user. The shell forms a combustion chamber and a flue gas heat exchange chamber connected to each other, as well as a smoke exhaust port and a condensed water outlet connected to the flue gas heat exchange chamber. The burner and the main heat exchanger 22 are arranged in the combustion chamber. That is to say, in this embodiment, the flue gas heat exchange chamber also has the function of collecting condensed water. Of course, in other embodiments, it can also be an additional water receiving tray, which receives water and then transports it to the condensed water recovery and treatment device 10. Usually, the main heat exchanger 22 is arranged above the burner for heating, and the condensing heat exchanger 23 is arranged in the flue gas heat exchange chamber, and the combustion chamber and the flue gas heat exchange chamber are connected, so that the flue gas generated by the burner is subjected to a primary heat exchange with the main heat exchanger 22 in the combustion chamber, and then flows into the flue gas heat exchange chamber for a secondary heat exchange with the condensing heat exchanger 23. Preferably, in order to improve the heat exchange efficiency of the secondary heat exchange, the flow direction of the water system 21 is usually to first exchange heat with the condensing heat exchanger 23, and then to exchange heat with the main heat exchanger 22.

[0061] In this embodiment, the condensed water recovery and treatment device 10 includes a water collection box 100 and a pumping device 200. The water collection box 100 is used to temporarily store condensed water. The pumping device 200 is arranged in the connecting pipe between the water collection box 100 and the water system 21 to inject the condensed water in the water collection box 100 into the water system 21. The pumping device 200 can be integrated with the water collection box 100, can be built in the water collection box 100, or can be arranged outside the water collection box 100.

[0062] Among them, the pumping device 200 can be integrated and installed in the embodiment of the water collecting box 100, which can reduce the components of the condensed water recovery and treatment device 10, specifically reduce the installation components of the pumping device 200.

[0063] In the embodiment where the pumping device 200 is arranged outside the water collecting box 100, it is usually necessary to arrange an exhaust device 700 to exhaust the air inside the pumping device 200 itself before the pumping operation can be performed. Therefore, if the pumping device 200 is built into the water collecting box 100, the exhaust device 700 can be omitted, thereby simplifying the installation structure of the pumping device 200 and, to a certain extent, reducing the space occupied by the condensed water recovery and treatment device 10 in the gas water heater 1. In addition, the pumping device 200 is arranged outside the water collecting box 100, which is convenient for users to install the condensed water recovery and treatment device 10, and the existing pumping device 200 and the water collecting box 100 can also be directly selected, which can be quickly implemented.

[0064] In the embodiment of the water collecting box 100 , the pumping device 200 is built into the water collecting box 100 , which can simplify the installation structure of the pumping device 200 and, to a certain extent, reduce the space occupied by the condensed water recovery device 10 in the gas water heater 1 .

[0065] It should be understood that the pumping device 200 can be a water pump or other negative pressure devices, such as a negative pressure device composed of a pipe and an impeller. In an embodiment where the pumping device 200 uses a water pump, the type of water pump can be selected according to its installation position with respect to the water collecting box 100. For example, it can be a diaphragm pump or a submersible pump.

[0066] The main function of the exhaust device 700 is to exhaust the air in the pumping device 200 before the pumping device 200 can operate in the embodiment where the pumping device 200 is arranged outside the water collecting box 100. Usually, the outlet of the pumping device 200 is connected to the exhaust pipe before the condensed water is injected into the water system 21, and the outlet of the pumping device 200 is connected to the water system 21 after the air in the pumping device 200 is exhausted.

[0067] Exemplarily, the exhaust device 700 includes a control valve and an exhaust pipeline. The exhaust device 700 is electrically connected to the control device 500, and the exhaust device 700 is controlled by the control device 500 to start or stop working.

[0068] Wherein, the control valve is configured as follows: when the pumping device 200 starts working and the pressure value of the connecting pipeline reaches a preset value, the outlet of the pumping device 200 is connected with the domestic water pipeline; when the pumping device 200 starts working and the pressure value of the connecting pipeline does not reach the preset value, the outlet of the pumping device 200 is cut off from the domestic water pipeline, and the outlet end of the pumping device 200 is connected with the water collecting box 100 through the exhaust pipeline.

[0069] Preferably, in order to avoid improper control timing of the control valve, which may cause condensed water to flow out of the exhaust pipe, the exhaust pipe may be connected to the water storage chamber 101 of the water collecting box 100, so that the air inside the pumping device 200 can be emptied, and condensed water can be prevented from flowing out of the exhaust pipe to pollute the gas water heater 1. In this way, the time accuracy control requirements for the control valve can also be reduced.

[0070] The water collecting box 100 is mainly used for collecting condensed water. The condensed water generated in the smoke is collected by the water collecting box 100, so there is no need to add an additional drain pipe to drain the condensed water.

[0071] In one embodiment, the water collecting box 100 includes a box body 110 and a module mounting portion, wherein the box body 110 has a water storage chamber 101 and a first water inlet 103 connected to the water storage chamber 101, and the first water inlet 103 is used to connect to a condensed water discharge outlet; the module mounting portion is arranged on the box body 110, and the module mounting portion is used to integrate and install corresponding functional modules.

[0072] It is understandable that when the water collecting box 100 is used to collect condensed water, different functional modules need to be configured accordingly. Taking the module mounting portion used for installing and fixing the pumping device 200 as an example, the module mounting portion can be specifically a groove provided on the box body 110 and adapted to the pumping device 200, so as to facilitate the installation and positioning of the pumping device 200 on the box body 110, so that the assembly of the pumping device 200 and the box body 110 is simpler and more convenient. In addition, when the water collecting box 100 is installed in the gas water heater 1, at least the pumping device 200 is integrated with the box body 110, and the space occupied between the pumping device 200 and the box body 110 is small, and the space utilization rate is high. In this way, the water collecting box 100 can be installed on different gas water heaters, and the adaptation range is wider.

[0073] Among them, the functional module can be specifically configured according to the configuration requirements, and is not limited here one by one. In this embodiment, the functional module can also include a liquid level detection device 400, and correspondingly, a module mounting portion for mounting and fixing the liquid level detection device 400 is reserved on the box body 110, so as to facilitate the integration of the liquid level detection device 400 on the water collection box 100.

[0074] In an exemplary embodiment, see Figures 11 to 15 The box body 110 includes a cover body 111 and a box body 112 . The box body 112 has a receiving groove with one end open. The cover body 111 is covered on the open end of the box body 112 to form the water storage cavity 101 . The water inlet is arranged on the cover body 111 .

[0075] Optionally, in order to facilitate the processing of the box body 110 and the module mounting portion installed on the box body 110, in this embodiment, the box body 110 is divided into two parts: a box body 112 and a cover body 111. The box body 110 can be set to a rectangular, cylindrical or other irregular shape, and its shape is not limited here. Figures 11 to 15 As shown, in order to minimize the internal space occupied by the box body 110 of the gas water heater 1 while providing a larger water storage space, the box body 110 is configured as a rectangular body, and its surface has a larger area for other module mounting parts to be installed and fixed.

[0076] It is understandable that the box body 110 is used to contain condensed water. Since the box body 112 and the cover body 111 are processed separately and assembled later, the condensed water may seep out from the connection end surface of the cover body 111 and the box body 112, causing the gas water heater 1 to leak. Generally, when the water collecting box 100 is installed in the gas water heater for use, the box body 112 is usually at the bottom and the cover body 111 is arranged at the top. In this embodiment, the cover body 111 and the box body 112 are arranged in the up and down direction for illustration, that is, the box body 112 has a receiving groove with an open upper end, and the cover body 111 is arranged in a plate shape, which is fixed to the upper end surface of the box body 112 by welding, screwing, etc., and the receiving groove is sealed to form the water storage chamber 101. In this way, when the condensed water in the water storage chamber 101 is full, it is possible to seep out from the connection gap between the cover body 111 and the box body 112, thereby improving its reliability.

[0077] Furthermore, the cover 111 is provided with an annular positioning protrusion adapted to the mounting groove, which can limit the relative displacement of the cover 111 and the box body 112 in the circumferential direction and improve the stability of the structure. In this embodiment, the water inlet is opened on the cover 111, which further improves the water collection capacity of the water collection box 100.

[0078] In one embodiment, the module installation portion includes at least one of a pumping device installation portion, an exhaust device installation portion, a filtering device installation portion, and a liquid level detection device installation portion.

[0079] Optionally, the water collecting box 100 can be fixed together with the pumping device 200 alone, or can be installed and fixed together with the exhaust device 700, or can be installed and fixed together with the filter device 300 or the liquid level detection device 400, and a corresponding module mounting part is provided on the box body 110 for each functional module to facilitate the rapid assembly of other functional modules with the box body 110 and improve the assembly efficiency.

[0080] It should be noted that the box body 110 may also have two parts, namely, a pumping device installation part, an exhaust device installation part, a filter device installation part, and a liquid level detection device installation part, such as only integrating the pumping device 200 and the exhaust device 700 on the box body 110, or only integrating the liquid level detection device 400 and the filter device 300 on the box body 110, etc., which are not limited here. In this embodiment, the box body 110 has a pumping device installation part, an exhaust device installation part, a filter device installation part, and a liquid level detection device installation part. In this way, all functional modules that cooperate with the water collecting box 100 are integrated on the box body 110, further reducing the space occupied by the water collecting box 100. It can be installed at different positions of the gas water heater 1 according to the needs of use, and has a wider range of adaptation.

[0081] In one embodiment, the water pumping device installation portion includes a first installation groove 107 for installing and fixing the water pumping device 200 and a quick-connect pipe 130 connected to the first installation groove 107, and the quick-connect pipe 130 has an outlet end and an inlet end; the inlet end of the quick-connect pipe 130 is placed in the water storage chamber 101, and the outlet end of the quick-connect pipe 130 is used to connect with the water pumping device 200.

[0082] In this embodiment, the installation part of the pumping device is located on the cover 111. Compared with the installation part on the box body 112, the box body 112 does not need to add other supporting structures to fix the pumping device 200, which simplifies the structure of the water collecting box 100 and reduces its size setting. The structural setting of the first installation groove 107 is adapted to the pumping device 200, which can be determined according to the selected pumping device 200. For example, when the pumping device 200 uses a diaphragm pump, the shape setting of the first installation groove 107 is adapted to the bottom end of the diaphragm pump, which is used to locate the installation position of the diaphragm pump and assemble with the diaphragm pump.

[0083] Furthermore, the quick-connect pipe 130 is configured as a straight pipe, which can be integrally formed with the cover body 111, or fixed to the cover body 111 by welding, flange connection, etc., which is not limited here. It can be understood that, in general, when the diaphragm pump is produced, the length of the water suction port end of the diaphragm pump is fixed. Therefore, in order for the diaphragm pump to be able to pump condensed water at a lower liquid level in the water storage chamber 101, it is necessary to connect an extension tube to the water suction port end of the diaphragm pump. By extending the lower end of the extension tube into the bottom of the chamber, the condensed water in the water storage chamber 101 can be discharged. This installation method is inefficient. In this embodiment, by setting the quick-connect pipe 130 and setting the quick-connect pipe 130 to match the size of the water suction port end of the diaphragm pump, when the diaphragm pump is installed in the first installation groove 107 of the box body 112, the water suction port end of the diaphragm pump is correspondingly inserted into the quick-connect pipe 130, and the effect of sucking out the condensed water at a lower liquid level in the water storage chamber 101 can be achieved through the quick-connect pipe 130, which greatly reduces the difficulty of assembling the diaphragm pump and the box body 110. It should be noted that the inner wall of the quick-connect pipe 130 abuts against the outer wall of the water suction port end of the diaphragm pump, which can achieve a better sealing effect.

[0084] In one embodiment, the distance between the inlet end of the quick-connect pipe 130 and the bottom of the water storage chamber 101 is not less than 5 mm. The distance between the inlet end of the quick-connect pipe 130 and the bottom of the water storage chamber 101 is defined as A, and A is greater than or equal to 5 mm. It can be understood that the inlet end of the quick-connect pipe 130 is equivalent to the suction port of the pump. In order to drain the condensed water in the water storage chamber 101, generally speaking, the inlet end of the quick-connect pipe 130 needs to be set close to the cavity. However, if the inlet end of the quick-connect pipe 130 is too close to the bottom of the cavity, the bottom of the box body 112 is likely to block the suction port of the diaphragm pump during the assembly and manufacturing process. Therefore, after repeated experiments and verification by the inventor, the distance between the inlet end of the quick-connect pipe 130 and the bottom of the water storage chamber 101 needs to be not less than 5 mm.

[0085] In one embodiment, a baffle 160 is provided in the water storage chamber 101, and the baffle 160 is arranged around the outer periphery of the quick-connect pipe 130. The inner wall of the baffle 160 and the outer wall of the quick-connect pipe 130 cooperate to form a water pumping space. The baffle 160 has a filter hole 161 for connecting the water pumping space and the water storage tank.

[0086] It should be noted that after long-term use of the water collection box 100, some solid particles from the flue gas and the filter element 320 may accumulate in the water storage chamber 101. The solid particles enter the pump and cause a blockage failure. Therefore, in this embodiment, a baffle 160 is provided in the water storage chamber 101. The baffle 160 is mainly used to isolate a pumping space from the inlet end of the quick-connect pipe 130. A large number of filter holes 161 are provided on the baffle 160, so that the condensed water outside the baffle 160 can enter the pumping space through the filter holes 161, so that the liquid level inside and outside the baffle 160 is kept consistent. By reasonably setting the size of the filter holes 161, solid particles can be blocked outside the baffle 160 to avoid damage to the pumping device 200, and the reliability of the water collection box 100 is higher.

[0087] Furthermore, if Fig.15 As shown, the baffle 160 is formed integrally with the box body 112 to reduce the production process of the water collection box 100. Specifically, the baffle 160 is protruded upward at the position of the bottom of the water storage chamber 101 corresponding to the quick-connect pipe 130, and the baffle 160 cooperates with the bottom of the water storage chamber 101 to form a groove with an upper opening, and the inlet end of the quick-connect pipe 130 is inserted into the groove. The baffle 160 is provided with a plurality of strip-shaped filter holes 161 in the vertical direction, and the plurality of strip-shaped filter holes 161 are arranged at intervals along the circumference of the quick-connect pipe 130, so that condensed water can enter the pumping space while limiting large particles from being sucked into the pump to prevent the pump from being blocked.

[0088] In one embodiment, the installation portion of the liquid level detection device includes a first through hole 105 communicating with the water storage chamber 101 .

[0089] Optionally, the liquid level detection device 400 for detecting the liquid level of the water storage chamber 101 can generally be a liquid level meter, a liquid level probe, etc., which needs to be inserted into the water storage chamber 101 to detect the liquid level of the water storage chamber 101. In this embodiment, the installation part of the liquid level detection device is provided with a first through hole 105 opened in the box body 110, and its position is not limited here, and it only needs not to interfere with other module installation parts. In this way, when the water collection box 100 and the liquid level detection device 400 are installed, there is no need to re-open a hole on the box body 110, which reduces the difficulty of its installation.

[0090] In one embodiment, the first through hole 105 is disposed in the cover body 111 , and a fixing portion 170 is protruded from the periphery of the first through hole 105 toward the inside of the water storage chamber 101 for installation and fixing of the liquid level detection device 400 .

[0091] Optionally, the first through hole 105 is installed on the cover 111, so that the condensed water in the water storage chamber 101 is prevented from seeping out from the connection gap between the first through hole 105 and the liquid level detection device 400, thereby preventing leakage. Furthermore, the first protrusion is arranged in a cylindrical shape, so that when the liquid level detection device 400 passes through the fixing portion 170 and is inserted into the water storage chamber 101, the contact area between the liquid level detection device 400 and the protrusion is increased, thereby preventing the liquid level detection device 400 from shaking and improving its detection accuracy.

[0092] In one embodiment, a liquid level detection device 400 is further provided on the water collecting box 100, and the liquid level detection device 400 is installed on the fixing portion 170, and the distance between the liquid level detection device 400 and the inlet end of the quick-connect pipe 130 is not less than 5 mm, and the liquid level detection device 400 is higher than the inlet end of the quick-connect pipe 130.

[0093] Optionally, in this embodiment, the liquid level detection device 400 is integrated on the box body 110, so that there is no need to assemble the liquid level detection device 400 with the box body 110 later, thereby improving its installation efficiency. In this embodiment, the liquid level detection device 400 uses a liquid level gauge, and the number of liquid level gauges is not limited here. The user can set it to 1, 2 or more according to actual use. If a liquid level detection device 400 is selected, the liquid level detection device 400 can realize high and low position detection in the water storage chamber 101. The liquid level detection device 400 can use a float level gauge, a radar level gauge or an ultrasonic level gauge.

[0094] However, considering the high cost of using radar level gauges or ultrasonic level gauges. In this embodiment, an ordinary level gauge is used, and two level gauges are arranged at intervals, defined as the first level gauge and the second level gauge. The first level gauge is used to detect the low liquid level in the water storage chamber 101, and the second level gauge is used to detect the high liquid level in the water storage chamber 101. When the condensed water in the gas water heater 1 gradually accumulates in the water collecting box 100, the liquid level gradually rises and submerges the inlet end of the quick-connect pipe 130, and continues to rise until the liquid level reaches the second level gauge. After a certain delay, the pumping device 200 starts to pump water. The pumping speed of the pumping device 200 is greater than the condensed water generation speed, and the liquid level gradually decreases. When the liquid level drops to the first level gauge, the pumping device 200 stops pumping water, and the cycle repeats, and the condensed water is intermittently discharged from the water collecting box 100.

[0095] It should be noted that the pumping device 200 generally uses a pump, which will vibrate when working, causing the liquid level in the water storage chamber 101 to shake. If the height difference between the second liquid level gauge and the pump inlet is small, the pump will start and stop frequently and be easily damaged. Therefore, in this embodiment, the distance between the height of the second liquid level gauge and the inlet end of the quick-connect pipe 130 is defined as B. By setting the distance B between the height of the second liquid level gauge and the inlet end of the quick-connect pipe 130 to be greater than or equal to 5 mm, such as setting B to 5 mm, 6 mm, 7 mm, 10 mm, 20 mm, etc., frequent starting and stopping of the pump can be avoided.

[0096] In one embodiment, the upper edge of the baffle 160 is higher than the height of the inlet end of the quick-connect pipe 130 , but lower than the liquid level detection device 400 .

[0097] It is understandable that the upper edge of the baffle 160 is higher than the height of the inlet end of the quick-connect port, which prevents large particles of impurities from entering the pumping space through the gap between the upper edge of the baffle 160 and the inlet end of the quick-connect port and being sucked into the pump, further preventing pump blockage. At the same time, if the upper edge of the baffle 160 is higher than the liquid level detection device 400, it is easy to interfere with the detection accuracy of the liquid level detection device 400, resulting in system instability.

[0098] In one embodiment, the exhaust device installation portion includes an exhaust port 104 communicated with the water storage chamber 101 .

[0099] Optionally, the exhaust device installation portion is set as an exhaust port 104, which can be produced and processed together with the box body 110, reducing its processing difficulty, and is used to balance the air pressure inside and outside the water storage chamber 101.

[0100] Furthermore, the exhaust port 104 is provided on the cover 111 to prevent the liquid level in the water storage chamber 101 from being too high and condensed water from leaking out of the exhaust port 104. A first mounting portion 140 is protruded from the periphery of the exhaust port 104 in a direction away from the main body. The first mounting portion 140 is cylindrically arranged to facilitate the communication between the external pipeline and the exhaust port 104.

[0101] In one embodiment, the water collection box 100 further includes a filter device 300, the filter device 300 includes a filter housing 310 and a filter element 320, wherein the filter housing 310 is installed on the cover body 111, the filter housing 310 has a second water inlet 301 and a second water outlet 302, the filter housing 310 includes a filter cartridge 311 and a filter cover 312, one end of the filter cartridge 311 is open, and the other end of the filter cartridge 311 is provided with the second water outlet 302, and the second water outlet 301 is provided with a filter cover 312. 2 is connected with the first water inlet 103 of the box body 110; the cover body 111 is covered on the open end of the cylinder body, and the second water inlet 301 is arranged on the cover body 111; the filter element 320 is arranged in the filter housing 310, and the second water inlet 301, the filter element 320 and the second water outlet 302 are connected in sequence to form a main filtering channel, and a bypass branch connecting the second water inlet 301 and the second water outlet 302 is arranged between the filter element 320 and the filter housing 310.

[0102] It is understandable that a neutralizer is usually placed inside the filter element 320. An embodiment of the neutralizer may be a granular object containing magnesium oxide.

[0103] Optionally, in this embodiment, the filter device 300 is directly integrated into the box body 110. In this way, the condensed water discharged from the condensed water outlet of the gas water heater 1 into the water storage chamber 101 in the water collecting box 100 will first be filtered and neutralized by the filter device 300 before entering the water storage chamber 101. In this way, there is no need to install an additional filter on the pipeline between the water collecting box 100 and the condensed water outlet of the gas water heater 1 to treat the condensed water.

[0104] Furthermore, since a bypass branch is provided between the filter element 320 and the filter housing 310, even if the filter device 300 is clogged during long-term use, the condensed water can enter the water storage chamber 101 through the bypass branch, and will not flow back into the condensed water drainage pipe or even overflow from the smoke pipe, causing the machine to fail to work properly. This makes the gas water heater 1 using the water collection box 100 more reliable.

[0105] In one embodiment, the filter housing 310 is provided with a liquid sealing tube 180 extending into the water storage chamber 101, and the distance between the end surface of the liquid sealing tube 180 away from the cover body 111 and the connecting surface between the cover body 111 and the main body is not less than 5mm and not more than 15mm.

[0106] Optionally, the liquid sealing tube 180 is provided in a cylindrical shape, such as Fig.15 As shown, the end surface of the end of the liquid sealing tube 180 away from the cover body 111 is the lower end surface of the liquid sealing tube 180, and the distance between the end surface of the end of the liquid sealing tube 180 away from the cover body 111 and the connecting surface of the cover body 111 and the main body is defined as C, then C can be 5mm, 6mm, 7mm, 10mm, 15mm and any value therebetween. In this way, if the pump installed on the installation part of the pumping device of the water collecting box 100 fails and cannot pump water, the liquid level of the water storage chamber 101 will continue to rise to the lower end surface position of the liquid sealing tube 180. At this time, the cover body 111, the lower end surface of the liquid sealing tube 180 and the liquid surface form a closed cavity. The condensed water continues to flow into the water collecting box 100, and the liquid level continues to rise, which will compress the gas in the closed cavity, causing the pressure in the closed cavity to rise. The condensed water will gradually rise in the liquid sealing tube 180 until the pressure generated by the gravity of the condensed water in the liquid sealing tube 180 exceeds the pressure in the closed cavity. The liquid level of the liquid reservoir in the water collecting box 100 will further rise, thereby preventing the liquid level from reaching the connection surface between the cover body 111 and the box body 112. When the seal of the connection surface fails, it plays a second anti-leakage protection and reduces the risk of water leakage.

[0107] In one embodiment, the filter housing 310 and the cover body 111 are integrally formed, so as to facilitate the overall assembly of the water collecting box 100 and improve the assembly efficiency of the water collecting box 100.

[0108] In one embodiment, a drain port 106 communicating with the water storage chamber 101 is provided at the bottom of the box body 110, and the water collection box 100 further includes a plugging cover for blocking the drain port 106. After long-term use of the water collection box 100, some solid particles from smoke and the filter element 320 may accumulate at the bottom of the water storage chamber 101. Opening the drain port 106 can prevent sediment from gathering and play a role in regular cleaning. In addition, the drain port 106 can also be used as a leak detection port for the whole machine process. A certain amount of water is injected from the drain port 106 so that the liquid level reaches the connection surface position of the cover body 111 and the box body 112 to detect the sealing of the water collection box 100. After the inspection is completed, the water can be discharged from the drain port 106. A drain pipe is convexly provided downwardly on the periphery of the drain port 106, and the outer peripheral wall of the drain pipe has an external thread. The plugging cover is in the shape of a cap, which is sleeved on the drain pipe and is threadedly connected to the drain pipe to facilitate blocking or opening the drain pipe.

[0109] Considering that condensed water has a certain degree of corrosiveness, the water collection box 100 generally needs to have a certain degree of corrosion resistance. In other embodiments, a filter device 300 can also be set at the first water inlet 103, so that the condensed water is first neutralized by the filter device 300 and then enters the water collection box 100 for storage, so that general materials can be selected as the material of the water collection box 100, and the condensed water first neutralized by the filter device 300 is then injected into the water system 21, which can also reduce the loss of condensed water to the water system 21. Of course, in some embodiments, the filter device 300 is suitable for neutralizing the condensed water before injecting it into the water system 21.

[0110] In order to reduce the manufacturing cost of the water collecting box 100, the water collecting box 100 for temporarily storing the condensed water in the condensed water recovery and treatment device 10 is arranged away from the main heat exchanger 22 and the condensing heat exchanger 23, that is, the water collecting box 100 is kept away from the high temperature area of ​​the gas water heater 1, avoiding the use of high temperature resistant materials for the water collecting box 100, thereby increasing the manufacturing cost, thereby reducing the manufacturing cost of the gas water heater 1 to a certain extent.

[0111] Exemplarily, the condensing heat exchanger 23 is located above the main heat exchanger 22, and the water collecting box 100 is located below the main heat exchanger 22. Of course, it is also necessary to stay away from the combustion port of the burner. Preferably, in order to shorten the distance for condensed water to enter the water collecting box 100, the condensing heat exchanger 23 and the water collecting box 100 are located on the same side of the main heat exchanger 22.

[0112] In one embodiment, a mounting seat 150 for mounting the exhaust device 700 is formed on one side of the water collecting box 100 , and the mounting seat 150 is integrally formed with the water collecting box 100 .

[0113] In another preferred embodiment, in order to avoid the pumping device 200 from running idle and thus causing a waste of electricity, the condensate recovery and treatment device 10 includes a liquid level detection device 400 and a control device 500 electrically connected to the liquid level detection device 400; the liquid level detection device 400 is used to detect the liquid level of the water collecting box 100 and output a liquid level detection signal; the control device 500 is used to start the pumping device 200 when the liquid level value corresponding to the liquid level detection signal reaches a first preset liquid level value; and to shut down the pumping device 200 when the liquid level value corresponding to the liquid level detection signal reaches a second preset liquid level value, and the second preset liquid level value is less than the first preset liquid level.

[0114] The liquid level detection device 400 is a water level probe or a liquid level sensor. The specific values ​​of the second preset liquid level value and the first preset liquid level need to be defined according to the amount of condensed water and the size of the water collecting box 100.

[0115] In another preferred embodiment, in order to prevent the water in the water system 21 from flowing back into the water collection box 100, the condensed water recovery and treatment device 10 includes a one-way valve 600, which is arranged on the connecting pipe between the water collection box 100 and the water system 21. It should be understood that in this embodiment, the direction of the one-way valve 600 is to only allow the water in the water collection box 100 to flow into the water system 21.

[0116] The present invention further proposes a pump-valve integrated system 2 for a gas water heater 1, wherein the gas water heater 1 has a water system 21, and the pump-valve integrated system 2 is used to recover condensed water generated by the gas water heater 1, so that the condensed water does not need to be directly discharged through additional water pipes.

[0117] In an embodiment of the present invention, a pump-valve integrated system 2 is used for a gas water heater 1, and the gas water heater 1 has a water system 21, including a water collecting box 100 and a pumping device 200, the water collecting box 100 has a water storage chamber 101; the water device is installed on the water collecting box 100, and the liquid inlet 201 of the pumping device 200 is connected to the water storage chamber 101, which is used to transport the condensed water in the water storage chamber 101 to the water system 21.

[0118] In this embodiment, by directly installing and fixing the pumping device 200 on the water collecting box 100, the liquid inlet 201 of the pumping device is connected to the liquid storage chamber, and the outlet end of the pumping device 200 is connected to the water system 21. In this way, when the pumping device 200 is started, the cooling water stored in the liquid storage chamber can be directly discharged into the water system 21 of the gas water heater 1 for recovery, so that the gas water heater 1 does not need to add a water pipe to discharge the condensed water, and the generated condensed water can be discharged back to the water system 21 through a pump, thereby realizing the recycling of the condensed water.

[0119] The technical solution of the present invention integrates a pumping device 200 on the water collecting box 100, and the liquid inlet 201 of the pumping device 200 is connected to the water storage chamber 101, so as to transport the condensed water in the water storage chamber 101 to the water system 21, so as to realize the recovery of the condensed water generated by the gas water heater 1 to the water system 21. The pumping device 200 is integrated in the water collecting box 100, and the components are interconnected, with high space utilization, which is suitable for installing the system on different models of gas water heaters 1 without restriction.

[0120] In one embodiment, the pump-valve integrated system 2 further includes a pressure relief pipe 800 , one end of which is connected to the water storage chamber 101 , and the other end of which is connected to the outlet end of the pumping device 200 .

[0121] It is understandable that when the pumping device 200 pumps the condensed water in the water storage chamber 101 into the water system 21, when the liquid level in the water storage chamber 101 drops to a preset low level, the pumping device 200 will stop working to avoid dry pumping. The pumping device 200 generally uses a pump or other negative pressure device to control the pressure difference between the inlet and outlet of the pumping device 200, thereby achieving the suction and discharge of the conveying medium. When the pumping device 200 stops working, since the outlet of the pump-valve integrated system 2 for recycling condensed water is connected to the tap water channel and has a certain back pressure, the boost pressure in the pumping device 200 cannot be released in time. Long-term operation will affect the performance and life of the pumping device 200. Therefore, in this embodiment, by adding the pressure relief pipe 800, when the pumping device 200 stops working, the outlet end of the pumping device 200 is connected with the inlet end of the pumping device 200 through the pressure relief pipe 800, so that the internal pressure of the pumping device 200 is released, ensuring the pressure balance between the outlet end of the pumping device 200 and the inlet end of the pumping device 200, thereby ensuring the performance loss of the pumping device 200 and extending its working life.

[0122] In one embodiment, the pump-valve integrated system 2 further includes a control valve, which is connected to the pressure relief pipe 800 and is used to control the on-off of the pressure relief pipe 800 .

[0123] Optionally, by setting the control valve, when the pumping device 200 stops working, the control valve can be controlled by the control component to open the pressure relief pipe 800 to achieve automatic pressure relief and reduce labor costs. At the same time, when the pumping device 200 is working, the pressure relief pipe 800 is disconnected when the control valve is closed to ensure that the pumping device 200 discharges the condensed water in the water storage chamber 101.

[0124] In one embodiment, the control valve is integrated and mounted on the water collecting box 100. In this way, the control valve, the pumping device 200 and the water collecting box 100 are integrated into one piece, which has high space utilization and convenient assembly, and further improves its applicability.

[0125] In one embodiment, the control valve is disposed on one side of the outlet end of the pumping device 200 .

[0126] With such an arrangement, the distance between the control valve and the outlet end of the pumping device 200 is relatively close, and there is no need to arrange a long pipeline to connect the control valve and the outlet end of the pumping device 200. The pipeline connection of the pump-valve integrated system 2 is shorter, simpler and more convenient, further reducing its assembly difficulty.

[0127] Furthermore, the control valve may be a two-position three-way solenoid valve, the three interfaces of which are respectively used to communicate with the outlet of the pumping device 200, the pressure relief pipe 800, and the water system 21.

[0128] In one embodiment, the control valve is configured as a solenoid valve, and the outlet end of the pumping device 200 is connected to a three-way joint, one end of the three-way joint is used to communicate with the water system 21, and the other end is connected to the solenoid valve.

[0129] In this embodiment, the solenoid valve is a one-position one-way solenoid valve, and the inlet and outlet ends of the solenoid valve are arranged vertically. The pumping device 200 is installed at the upper end of the water collecting box 100, and the water outlet of the pumping device 200 faces the left direction. The solenoid valve is installed on the left side of the water collecting box 100 and is placed below the three-way joint. Preferably, one end of the three-way joint is arranged opposite to the inlet end of the solenoid valve. In terms of pipeline layout, the pipeline between the solenoid valve and the outlet end of the water suction device is the shortest, and the wiring difficulty is reduced.

[0130] In one embodiment, the water collecting box 100 is provided with the exhaust port 104 , and a first mounting portion 140 is protruded from the periphery of the exhaust port 104 away from the water collecting box 100 , and one end of the pressure relief pipe 800 away from the water outlet device is connected to the first mounting portion 140 .

[0131] Optionally, the first mounting portion 140 is cylindrical, and a groove is provided on its outer peripheral wall, and its size is adapted to the pressure relief pipe 800. One end of the pressure relief pipe 800 is sleeved on the first mounting portion 140 to achieve communication with the water storage chamber 101. The pressure relief pipe 800 and the first mounting portion 140 can be sealed and connected by an external cable tie or an interference fit between the pressure relief pipe 800 and the first mounting portion 140. In this way, both ends of the pressure relief pipe 800 can be disassembled, which is convenient for its installation and replacement.

[0132] In one embodiment, the water collecting box 100 includes a cover 111 and a box body 112 , wherein the box body 112 has a receiving groove with one end open, and the cover 111 is disposed on the open end of the body to form the water storage chamber 101 .

[0133] Optionally, in order to facilitate the processing of the water collecting box 100 and the module mounting portion installed on the water collecting box 100, in this embodiment, the water collecting box 100 is divided into two parts: a box body 112 and a cover body 111. The water collecting box 100 can be set to a rectangular, cylindrical or other irregular shape, and its shape is not limited here. In this embodiment, if Figures 11 to 15 As shown, considering that the water collecting box 100 occupies as little internal space of the gas water heater 1 as possible while having a larger water storage space, the water collecting box 100 is configured as a rectangular body, and its surface has a larger area for other module mounting parts to be installed and fixed.

[0134] It is understandable that the water collecting box 100 is used to contain condensed water. Since the box body 112 and the cover body 111 are processed separately and assembled later, the condensed water may seep out from the connecting end surface of the cover body 111 and the box body 112, causing the gas water heater 1 to leak. Generally, when the water collecting box 100 is installed in a gas water heater for use, the box body 112 is usually at the bottom and the cover body 111 is at the top. In this embodiment, the cover body 111 and the box body 112 are arranged in the up and down direction for illustration, that is, the box body 112 has a receiving groove with an open upper end, and the cover body 111 is arranged in a plate shape, which is fixed to the upper end surface of the box body 112 by welding, screwing, etc., and the receiving groove is sealed to form the water storage chamber 101.

[0135] Furthermore, the cover 111 is provided with an annular positioning protrusion adapted to the mounting groove, which can limit the relative displacement of the cover 111 and the box body 112 in the circumferential direction and improve the stability of the structure. In this embodiment, the water inlet is opened on the cover 111, which further improves the water collection capacity of the water collection box 100.

[0136] In one embodiment, the water inlet is disposed on the cover body 111 , the pumping device 200 is disposed on the cover body 111 and is placed on the cover body 111 and on one side of the water inlet; and / or, the drain outlet 102 is disposed on the cover body 111 .

[0137] It is understandable that, generally speaking, when the water collecting box 100 is installed in the gas water heater 1, the box body 112 is the supporting end, and the cover body 111 is placed on the upper end of the cover body 111. In this way, when the pumping device 200 is installed on the cover body 111, the inlet end of the pumping device 200 can extend into the water storage chamber 101 along the vertical direction, and the pipeline length of the inlet end of the pumping device 200 is relatively short, which simplifies the pipeline length of the pump-valve integrated system 2.

[0138] In one embodiment, the water collecting box 100 further includes a quick-connect connector 120 , the first mounting portion 140 is provided with a quick-connect connector 120 , and / or the outlet end of the control valve is provided with a quick-connect connector 120 .

[0139] Optionally, one end of the first mounting portion 140 away from the cover body 111 is fixedly connected to the quick-connect connector 120, and the other end of the quick-connect connector 120 is used for quick disassembly and assembly with the pressure relief pipe 800. Furthermore, a quick-connect connector 120 is also fixedly connected to the outlet end of the control valve. In this way, both ends of the pressure relief pipe 800 can be quickly disassembled and assembled, so that there is no need to pre-install the pressure relief pipe 800 in the pump-valve integrated system 2. The pressure relief pipe 800 can connect the two quick-connect connectors 120 after the pump-valve integrated system 2 is installed in the gas water heater 1.

[0140] In one embodiment, the cover body 111 is formed with a first installation groove 107 for installing the pumping device 200, and the cover body 111 is formed with a drain port 102 connecting the first installation groove 107 and the water storage chamber 101 at the first installation groove 107. When the pumping device 200 is installed in the first installation groove 107, the liquid inlet 201 of the pumping device 200 is connected with the drain port 102.

[0141] In this embodiment, the installation part of the pumping device is located on the cover 111. Compared with the installation part on the box body 112, the box body 112 does not need to add other supporting structures to fix the pumping device 200, which simplifies the structure of the water collecting box 100 and reduces its size setting. The structural setting of the first installation groove 107 is adapted to the pumping device 200, which can be determined according to the selected pumping device 200. For example, when the pumping device 200 uses a diaphragm pump, the shape setting of the first installation groove 107 is adapted to the bottom end of the diaphragm pump, which is used to locate the installation position of the diaphragm pump and assemble with the diaphragm pump.

[0142] Furthermore, the drain port 102 is coaxially arranged with the liquid inlet 201 of the pumping device 200. Thus, when the pumping device 200 is fixed to the first mounting groove 107 by means of screws or the like, the liquid inlet 201 of the pumping device 200 is directly connected to the water storage chamber 101 through the drain port 102 to pump water.

[0143] In one embodiment, the periphery of the drain outlet 102 protrudes downward to form a quick-connect pipe 130; when the pumping device 200 is installed at the installation position, the inlet end of the pumping device 200 is inserted into the quick-connect pipe 130 and sealedly connected to the inner wall of the quick-connect pipe 130.

[0144] Optionally, the quick-connect pipe 130 can be integrally formed with the cover body 111, or can be fixed to the cover body 111 by welding, flange connection, etc., which is not limited here. It can be understood that, in general, when the diaphragm pump is produced, the length of the water suction port end of the diaphragm pump is fixed. Therefore, in order for the diaphragm pump to be able to pump condensed water at a lower liquid level in the water storage chamber 101, it is necessary to connect an extension tube to the water suction port end of the diaphragm pump. By extending the lower end of the extension tube into the bottom of the chamber, the condensed water in the water storage chamber 101 can be discharged. This installation method is inefficient. In this embodiment, by setting the quick-connect pipe 130 and setting the quick-connect pipe 130 to match the size of the water suction port end of the pumping device 200, when the pumping device 200 is installed in the first installation groove 107 of the box body 112, the water suction port end of the diaphragm pump is correspondingly inserted into the quick-connect pipe 130, and the effect of sucking out the condensed water at a lower liquid level in the water storage chamber 101 can be achieved through the quick-connect pipe 130, further reducing the difficulty of assembling the diaphragm pump and the box body 110. It should be noted that the inner wall of the quick-connect pipe 130 abuts against the outer wall of the water suction port end of the diaphragm pump, which can achieve a better sealing effect.

[0145] In one embodiment, the distance between the lower end of the quick-connect pipe 130 and the bottom of the water storage chamber 101 is not less than 5 mm.

[0146] It is understandable that the inlet end of the quick-connect pipe 130 is equivalent to the suction port of the pump. In order to drain the condensed water in the water storage chamber 101, generally speaking, the inlet end of the quick-connect pipe 130 needs to be set close to the chamber. However, if the inlet end of the quick-connect pipe 130 is too close to the bottom of the chamber, the bottom of the box body 112 is easy to block the suction port of the diaphragm pump during the assembly and manufacturing process. Therefore, after repeated experiments and verifications by the inventor, the distance between the inlet end of the quick-connect pipe 130 and the bottom of the water storage chamber 101 needs to be no less than 5 mm.

[0147] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A water collecting box for a gas water heater having a condensed water outlet, characterized in that: The water collecting box comprises: A box body having a water storage cavity and a water inlet connected to the water storage cavity, wherein the water inlet is used to connect to a condensed water discharge port; and The module installation part is arranged on the box body, and the module installation part is used for integrating and installing the corresponding functional modules.

2. The water collecting box according to claim 1, characterized in that: The box body comprises a cover body and a box body, the box body has a receiving groove with one end open, the cover body is arranged on the open end of the box body to form the water storage cavity, and the water inlet is arranged on the cover body.

3. The water collecting box according to claim 2, characterized in that: The module installation part includes at least one of a pumping device installation part, an exhaust device installation part, a filtering device installation part, and a liquid level detection device installation part.

4. The water collecting box according to claim 3, characterized in that: The water pumping device installation part includes a first installation groove for the water pumping device to be installed and fixed, and a quick-connect pipe communicating with the first installation groove, wherein the quick-connect pipe has an outlet end and an inlet end; The inlet end of the quick-connect pipe is placed in the water storage cavity, and the outlet end of the quick-connect pipe is used to be connected to the water pumping device.

5. The water collecting box according to claim 4, characterized in that: The distance between the inlet end of the quick-connect pipe and the bottom of the water storage chamber is not less than 5 mm.

6. The water collecting box according to claim 5, characterized in that: A baffle is arranged in the water storage cavity, and the baffle is arranged around the outer circumference of the quick-connect pipe. The inner wall of the baffle and the outer wall of the quick-connect pipe cooperate to form a water pumping space. The baffle has a filtering hole for connecting the water pumping space and the water storage tank.

7. The water collecting box according to claim 6, characterized in that: The liquid level detection device mounting portion includes a first through hole communicating with the water storage chamber.

8. The water collecting box according to claim 7, characterized in that: The first through hole is arranged on the cover body, and a fixing portion is protruded from the periphery of the first through hole toward the inside of the water storage cavity for installing and fixing the liquid level detection device.

9. The water collecting box according to claim 8, characterized in that: The water collecting box further comprises a liquid level detection device, and the liquid level detection device is installed on the fixing part; The liquid level detection device is provided with a low trigger liquid level and a high trigger liquid level; The distance between the high-level triggering liquid level and the inlet end of the quick-connect pipe is not less than 5 mm, and the high-level triggering liquid level is higher than the inlet end of the quick-connect pipe.

10. The water collecting box according to claim 9, characterized in that: The height of the baffle is greater than the height of the inlet end of the quick-connect pipe and less than the height of the high-level triggering liquid level.

11. The water collecting box according to claim 3, characterized in that: The exhaust device installation portion includes an exhaust port communicated with the water storage chamber.

12. The water collecting box according to claim 11, characterized in that: The exhaust port is arranged on the cover body, and a first mounting portion is protruded from the periphery of the exhaust port in a direction away from the box body.

13. The water collecting box according to claim 2, characterized in that: The water collecting box also includes a filtering device, which includes: A filter housing is mounted on the cover body, the filter housing has a second water inlet and a second water outlet, the filter housing comprises a filter cartridge and a filter cover, one end of the filter cartridge is open, the other end of the filter cartridge is provided with the second water outlet, the second water outlet is communicated with the water inlet of the box body; the cover body is provided on the open end of the filter body, and the second water inlet is provided on the cover body; The filter element is arranged in the filter housing, the second water inlet, the filter element and the second water outlet are connected in sequence to form a main filtering channel, and a bypass branch connecting the second water inlet and the second water outlet is arranged between the filter element and the filter housing.

14. The water collecting box according to claim 13, characterized in that: The filter housing is provided with a liquid sealing tube extending into the water storage cavity, and the distance between the end surface of the liquid sealing tube away from the cover body and the connecting surface of the cover body and the box body is not less than 5mm and not more than 15mm.

15. The water collecting box according to claim 14, characterized in that: The filter housing and the cover body are integrally formed.

16. The water collecting box according to claim 1, characterized in that: The bottom of the box body is provided with a sewage outlet communicated with the water storage cavity, and the water collection box also includes a plugging cover for blocking the sewage outlet.

17. A gas water heater, characterized in that: It comprises a water collecting box as described in any one of claims 1 to 16.

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