Wastewater recycling device for steam heating equipment and steam heating equipment

Abstract

The present invention relates to a wastewater recycling device of a steam heating device and a steam heating device, wherein the wastewater recycling device of the steam heating device comprises: a housing; a waterproof breathable membrane, which is arranged in the housing and divides the housing into a clean water chamber and a wastewater chamber, the clean water chamber is suitable for being connected to the water inlet of a water user; a heating component, which is suitable for heating the wastewater chamber; a water inlet pipe, comprising a heat exchange pipe section capable of cooling the clean water chamber and a water outlet end extending into the wastewater chamber, the water inlet pipe is suitable for being connected to the water outlet of the water user. Therefore, the wastewater recycling device of the present invention can complete the operations of storing and heating wastewater, condensing water vapor and storing purified water in one housing, has a more compact structure, occupies less space, and can be used in steam heating devices such as steam ovens. In addition, the water inlet pipe can cool the water vapor in the clean water chamber while supplying water to the wastewater chamber, thereby accelerating the condensation of the water vapor in the clean water chamber.

Description

Technical Field

[0001] The invention relates to the technical field of household appliances, and in particular to a wastewater recycling device for steam heating equipment and the steam heating equipment. Background Art

[0002] As people's living standards improve, their requirements for food nutrition and taste are also gradually increasing. In the process of steaming food, less nutrition is lost and the original taste of food can be retained. Steam heating equipment that uses steam to cook food has gradually entered thousands of households. Steam heating equipment in the prior art generally includes a steam generator, a clean water tank for supplying water to the steam generator, and a waste water tank for accommodating the remaining water of the steam generator.

[0003] The prior art discloses a salt wastewater treatment device, including a heating box, a cooling box, a water inlet pipe and an air inlet pipe. An electric heater is provided in the wall of the heating box, an oblique waterproof breathable membrane is provided on the inner wall of the heating box, one end of the water inlet pipe is installed in the heating box and is located above the waterproof breathable membrane, the other end of the water inlet pipe is installed in the cooling box, one end of the air inlet pipe is installed at the upper right end of the heating box, the other end of the air inlet pipe passes through the cooling box and is connected to the upper end of the cooling pipe, and the lower end of the cooling pipe is open. The salt wastewater in the heating box can be heated by the electric heating component, so that the water therein evaporates and passes through the waterproof breathable membrane, and is partially liquefied above the waterproof breathable membrane. The liquefied water can enter the cooling box through the water inlet pipe, and the water vapor can enter the cooling box through the air inlet pipe. The prior art sets a heating box and a cooling box, which takes up a large space. Generally, people have requirements for the volume of steam heating equipment such as steam ovens, and the prior art cannot be applied to steam heating equipment such as steam ovens. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the wastewater treatment device in the prior art cannot be applied to steam heating equipment such as steam ovens, thereby providing a wastewater recycling device and steam heating equipment for steam heating equipment with a compact structure and small space occupation.

[0005] In order to solve the above problems, the first aspect of the present invention provides a wastewater recycling device for steam heating equipment, comprising: a shell; a waterproof and breathable membrane, which is arranged in the shell and divides the shell into a clean water chamber and a wastewater chamber, and the clean water chamber is suitable for being connected to the water inlet of a water user; a heating component, which is suitable for heating the wastewater chamber; a water inlet pipe, including a heat exchange pipe section capable of cooling the clean water chamber and a water outlet end extending into the wastewater chamber, and the water inlet pipe is suitable for being connected to the water outlet of the water user.

[0006] Furthermore, the heat exchange tube section is spirally wound around the shell and is located outside the clean water chamber.

[0007] Furthermore, the cross section of the heat exchange tube section is semicircular, and the bottom edge of the semicircle is arranged downward.

[0008] Furthermore, the steam heating device also includes a cooling mechanism arranged upstream of the heat exchange pipe section, and the cooling mechanism is suitable for cooling the water in the water inlet pipe.

[0009] Furthermore, a Venturi nozzle is provided at the water outlet end of the water inlet pipe.

[0010] Furthermore, a flow cavity is formed in the venturi nozzle, and a partition plate with holes is arranged in the flow cavity.

[0011] Furthermore, the waterproof and breathable membrane is horizontally arranged in the shell, and the clean water chamber is located above the waste water chamber.

[0012] Furthermore, the wastewater recycling device also includes a water outlet pipe, which is suitable for being connected to the water inlet of the water user, connected to the top wall of the water purification chamber and extending into the water purification chamber, and a flow gap is formed between the lower end of the water outlet pipe and the waterproof breathable membrane.

[0013] Further, the water outlet pipe comprises:

[0014] The first section is connected to the top wall of the water purification chamber and is suitable for being connected to the water inlet of the water user;

[0015] The second section is connected to the first section and is arranged in the water purification chamber. Both ends of the second section are trumpet-shaped.

[0016] The second aspect of the present invention relates to a steam heating device, comprising the wastewater recycling device and the water user provided by the first aspect of the present invention.

[0017] Furthermore, the steam heating device further comprises a drainage pump connected to the water inlet pipe, wherein the input end of the drainage pump is connected to the water outlet of the water user; and / or,

[0018] The steam heating device also includes a water supply pump arranged in the water outlet pipe, and the input end of the water supply pump is connected to the water outlet of the water purification chamber.

[0019] The present invention has the following advantages:

[0020] 1. It can be seen from the above technical scheme that the wastewater recycling device of the steam heating equipment of the first aspect of the present invention mainly divides the shell into a clean water chamber and a wastewater chamber through a waterproof breathable membrane, and connects the clean water chamber to the water inlet of the water user, and connects the wastewater chamber to the water outlet of the water user through a water inlet pipe. Among them, the wastewater in the water user of the steam heating equipment can enter the wastewater chamber through the water inlet pipe, and the heating component can heat the wastewater chamber, so that the water therein evaporates and enters the clean water chamber through the waterproof breathable membrane. Water vapor can liquefy in the clean water chamber, and the waterproof breathable membrane can prevent the purified water after liquefaction from passing through, so as to store the purified water in the clean water chamber. When the water user needs water, the purified water in the clean water chamber can enter the water user through the inlet of the water user connected thereto, thereby realizing the recycling of wastewater. Therefore, the wastewater recycling device of the present invention can complete the operations of storing and heating wastewater, condensing water vapor and storing purified water in one shell, and its structure is more compact, occupies less space, and can be used in steam heating equipment such as steam ovens. In addition, the water inlet pipe can cool the water vapor in the clean water chamber while supplying water to the waste water chamber, accelerating the condensation of the water vapor in the clean water chamber. At the same time, the water vapor in the clean water chamber can heat the waste water in the water inlet pipe, promoting the water in the waste water to be heated into water vapor, which helps to save the energy consumed by the heating component. In addition, the waste water recycling device of the steam heating equipment of the present invention has a simple structure, is easy to manufacture, is safe and reliable to use, and is easy to implement and promote.

[0021] 2. The heat exchange pipe section is spirally wrapped around the shell and located outside the clean water cavity, which can increase the contact area between the heat exchange pipe section and the clean water cavity while preventing the heat exchange pipe section from damaging the sealing inside the clean water cavity. The cross section of the heat exchange pipe section is semicircular with the bottom edge facing downward, which can ensure that the wastewater in the heat exchange pipe section flows unimpeded and increase the contact area between the heat exchange pipe section and the wastewater cavity, which helps to accelerate the liquefaction of water vapor and the heating of wastewater.

[0022] 3. The steam heating equipment also includes a cooling mechanism disposed upstream of the heat exchange pipe section. The cooling mechanism is suitable for cooling the water in the water inlet pipe to enhance the cooling effect of the wastewater in the water inlet pipe on the water vapor in the clean water chamber. The cooling mechanism is a cooling fan, which is disposed upstream of the heat exchange pipe section and can cool the wastewater flowing through the heat exchange pipe section, thereby helping to accelerate the liquefaction of the water vapor in the clean water chamber.

[0023] 4. A Venturi nozzle is provided at the outlet of the water inlet pipe. When the wastewater flows on the surface of the Venturi nozzle, the dynamic pressure reaches the maximum value and the static pressure reaches the minimum value at the narrowest part of the nozzle. The speed of the wastewater increases because the cross-sectional area of ​​the flow decreases. The entire flow must undergo the process of reducing the inner diameter of the nozzle at the same time, so the pressure also decreases at the same time, thereby generating a pressure difference, which is used to provide an external suction force for the wastewater. Therefore, setting a Venturi nozzle at the outlet of the water inlet pipe can make the wastewater flow out more smoothly. At the same time, the Venturi nozzle requires short upstream and downstream straight pipe sections, small pressure loss, stable performance, and convenient maintenance. A flow cavity is formed in the Venturi nozzle, and a perforated baffle is provided in the flow cavity. The perforated baffle can limit the flow rate of the wastewater sprayed from the nozzle, ensure the stability of the flow rate at the nozzle, and reduce the loss of the device. When the models of the drainage pumps connected to the water inlet pipe are different, the operator can adapt to the power of water pumps of different strengths by replacing the perforated baffles. When the pump power is low and is not prone to component loss, the operator may also choose to remove the baffle.

[0024] 5. The waterproof breathable membrane is arranged horizontally in the shell, and the clean water chamber is located above the waste water chamber. This allows the water vapor generated when the water in the waste water chamber evaporates to rise and pass through the waterproof breathable membrane into the clean water chamber, greatly reducing the risk of water vapor remaining in the waste water chamber. The waste water recycling device also includes a water outlet pipe. The water outlet pipe is suitable for connecting to the water inlet of the water dispenser. The water outlet pipe is connected to the top wall of the clean water chamber and extends into the clean water chamber, and a flow gap is formed between the lower end of the water outlet pipe and the waterproof breathable membrane. The water in the clean water chamber can flow into the water outlet pipe through the flow gap. The water outlet pipe includes a first section and a second section. The first section is connected to the top wall of the clean water chamber and is suitable for connecting to the water inlet of the water dispenser. The second section is connected to the first section and is arranged in the clean water chamber. Both ends of the second section are trumpet-shaped, which can make the water inlet and drainage of the water outlet pipe smoother and less prone to blockage. The inner diameter in the middle is smaller than the inner diameter at both ends, which helps to increase the drainage speed of the water outlet pipe.

[0025] 6. The second aspect of the present invention relates to a steam heating device, which includes the wastewater recycling device of the first aspect of the present invention. The steam heating device of the second aspect of the present invention can save water without excessively increasing its volume, and reduce the frequency of users dumping wastewater, which helps to improve user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of a wastewater recycling device for a steam heating device according to Example 1 of the present invention;

[0028] Figure 2 The waterproof and breathable membrane of the wastewater recycling device of Example 1 of the present invention is schematically shown;

[0029] Figure 3 The heat exchange pipe section of the water inlet pipe of the wastewater recycling device of Example 1 of the present invention is schematically shown;

[0030] Figure 4 The venturi nozzle of the wastewater recycling device of embodiment 1 of the present invention;

[0031] Figure 5 A perforated baffle of a venturi nozzle of a wastewater recycling device according to embodiment 1 of the present invention;

[0032] Figure 6 This is the second section of the outlet pipe of the wastewater recycling device in Example 1 of the present invention.

[0033] Description of reference numerals:

[0034] 100. Wastewater recycling device; 1. Shell; 11. Clean water chamber; 12. Wastewater chamber; 2. Waterproof and breathable membrane; 3. Heating component; 41. Water inlet pipe; 411. Heat exchange pipe section; 412. Water outlet; 42. Venturi nozzle; 421. Perforated partition; 5. Cooling mechanism; 7. Water outlet pipe; 71. First section; 72. Second section. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] Example 1

[0040] Figure 1 This is a schematic diagram of a wastewater recycling device for a steam heating device according to Example 1 of the present invention. Figure 2 The waterproof and breathable membrane of the wastewater recycling device of Example 1 of the present invention is schematically shown. Figure 1 and Figure 2 As shown, the wastewater recycling device 100 of the steam heating equipment of this embodiment mainly includes a housing 1, a waterproof breathable membrane 2, a heating component 3 and a water inlet pipe 41. Among them, the waterproof breathable membrane 2 is arranged in the housing 1 and divides the housing 1 into a clean water chamber 11 and a waste water chamber 12. The clean water chamber 11 is suitable for being connected to the water inlet of the water user. The heating component 3 is suitable for heating the waste water chamber 12. The water inlet pipe 41 includes a heat exchange pipe section 411 capable of cooling the clean water chamber 11 and a water outlet end 412 extending into the waste water chamber 12. The water inlet pipe 41 is suitable for being connected to the water outlet of the water user. The steam heating equipment is preferably, but not limited to, an electrical appliance such as a steam oven, a steam mop or an electric iron. The water user can be selected as a steam generator in the steam heating equipment. The waterproof breathable membrane 2 is preferably, but not limited to, made of polytetrafluoroethylene material. The polytetrafluoroethylene material is a synthetic polymer material that uses fluorine to replace all hydrogen atoms in polyethylene, which is well known to those skilled in the art and will not be described in detail here. The heating component 3 is preferably but not limited to a PTC heating element or an electric heating wire, etc. The heating component 3 has a heating temperature greater than 100° C., which can liquefy the water in the wastewater into water vapor and sterilize the wastewater at the same time.

[0041] The wastewater recycling device 100 of the steam heating equipment of this embodiment mainly divides the shell 1 into a clean water chamber 11 and a wastewater chamber 12 through a waterproof breathable membrane 2, and connects the clean water chamber 11 to the water inlet of the water user, and connects the wastewater chamber 12 to the water outlet of the water user through a water inlet pipe 41. Among them, the wastewater in the water user of the steam heating equipment can enter the wastewater chamber 12 through the water inlet pipe 41. The heating component 3 can heat the wastewater chamber 12, so that the water therein evaporates and enters the clean water chamber 11 through the waterproof breathable membrane 2. Water vapor can be liquefied in the clean water chamber 11, and the waterproof breathable membrane 2 can prevent the liquefied purified water from passing through, so that the purified water is stored in the clean water chamber 11. When the water user needs water, the purified water in the clean water chamber 11 can enter the water user through the inlet of the water user connected thereto, thereby realizing the recycling of wastewater.

[0042] Therefore, the wastewater recycling device 100 of the present embodiment can complete the operations of storing and heating wastewater, condensing water vapor and storing purified water in a housing 1. Its structure is more compact, occupies less space, and can be used in steam heating equipment such as steam ovens. In addition, the water inlet pipe 41 can cool the water vapor in the clean water chamber 11 while supplying water to the wastewater chamber 12, accelerate the condensation of the water vapor in the clean water chamber 11, and at the same time, the water vapor in the clean water chamber 11 can heat the wastewater in the water inlet pipe 41, promote the water in the wastewater to be heated into water vapor, and help save the energy consumed by the heating component 3. In addition, the wastewater recycling device 100 of the steam heating equipment of the present embodiment has a simple structure, is easy to manufacture, is safe and reliable to use, and is easy to implement and promote.

[0043] The heat exchange pipe section 411 may be arranged in the water purification chamber 11 or outside the water purification chamber 11. Preferably, in this embodiment, the heat exchange pipe section 411 is spirally wound around the shell 1 and is located outside the water purification chamber 11, which can increase the contact area between the heat exchange pipe section 411 and the water purification chamber 11 while preventing the heat exchange pipe section 411 from damaging the sealing of the water purification chamber 11. The cross section of the heat exchange pipe section 411 is preferably, but not limited to, circular, square, elliptical or semicircular. For example, in this embodiment, Figure 3 As shown, the cross-section of the heat exchange tube section 411 is semicircular with the bottom edge facing downward, which can not only ensure the unimpeded flow of wastewater in the heat exchange tube section 411, but also increase the contact area between the heat exchange tube section 411 and the clean water chamber 11, which helps to accelerate the liquefaction of water vapor and the heating of wastewater.

[0044] In this embodiment, the steam heating device preferably further includes a cooling mechanism 5 disposed upstream of the heat exchange pipe section 411. The cooling mechanism 5 is suitable for cooling the water in the water inlet pipe 41 to enhance the cooling effect of the wastewater in the water inlet pipe 41 on the water vapor in the clean water chamber 11. The cooling mechanism 5 is preferably, but not limited to, an air cooling mechanism or a liquid cooling mechanism. For example, in this embodiment, the cooling mechanism 5 is a cooling fan, which is disposed upstream of the heat exchange pipe section 411, and can cool the wastewater flowing through the heat exchange pipe section 411, thereby helping to accelerate the liquefaction of the water vapor in the clean water chamber 11.

[0045] In this embodiment, a nozzle is provided at the water outlet end 412 of the water inlet pipe 41. Figure 4 As shown, a Venturi nozzle 42 is preferred. When the wastewater flows on the surface of the Venturi nozzle 42, the dynamic pressure reaches a maximum value and the static pressure reaches a minimum value at the narrowest point in the nozzle, and the speed of the wastewater increases because the cross-sectional area of ​​the flow is reduced. The entire flow must undergo a process of shrinking the inner diameter of the nozzle at the same time, so the pressure also decreases at the same time, thereby generating a pressure difference, which is used to provide an external suction force for the wastewater. Therefore, providing a Venturi nozzle 42 at the water outlet 412 of the water inlet pipe 41 can make the wastewater flow out more smoothly. At the same time, the Venturi nozzle 42 requires short upstream and downstream straight pipe sections, small pressure loss, stable performance, and easy maintenance. In this embodiment, as Figure 5 As shown, a flow chamber is preferably formed in the venturi nozzle 42, and a perforated partition 421 is provided in the flow chamber. The perforated partition 421 can limit the flow rate of wastewater ejected from the nozzle, ensure the stability of the flow rate at the nozzle, and reduce the loss of the device. When the models of the drainage pumps connected to the water inlet pipe 41 are different, the operator can adapt to the power of water pumps of different strengths by replacing the perforated partition 421. When the power of the water pump is small and it is not easy to cause device loss, the operator can also choose to remove the partition.

[0046] The waterproof breathable membrane 2 may be optionally arranged in an inclined manner in the housing 1, or may be optionally arranged in the housing 1 in a horizontal direction or a vertical direction. For example, in this embodiment, the waterproof breathable membrane 2 is horizontally arranged in the housing 1, and the clean water chamber 11 is located above the waste water chamber 12. This allows the water vapor generated by the evaporation of the water in the waste water chamber 12 to rise and pass through the waterproof breathable membrane 2 into the clean water chamber 11, greatly reducing the risk of water vapor remaining in the waste water chamber 12.

[0047] In this embodiment, the wastewater recycling device 100 also includes a water outlet pipe 7. The water outlet pipe 7 is suitable for being connected to the water inlet of the water user. The water outlet pipe 7 is connected to the top wall of the clean water chamber 11 and extends into the clean water chamber 11, and a flow gap is formed between the lower end of the water outlet pipe 7 and the waterproof breathable membrane 2. The water in the clean water chamber 11 can flow into the water outlet pipe 7 through the flow gap. Preferably, the water outlet pipe 7 includes a first section 71 and a second section 72. Among them, the first section 71 is connected to the top wall of the clean water chamber 11 and is suitable for being connected to the water inlet of the water user. The second section 72 is connected to the first section 71 and is arranged in the clean water chamber 11. Figure 6 As shown, both ends of the second section 72 are trumpet-shaped, which can make the water inlet and drainage of the water outlet pipe 7 smoother and less prone to blockage. The inner diameter in the middle is smaller than the inner diameter at both ends, which helps to improve the drainage speed of the water outlet pipe 7. In order to facilitate the connection of the first section 71 of the water outlet pipe 7 with the top wall of the water purification chamber 11, the first section 71 of the water outlet pipe 7 is preferably a hose. In order to avoid the trumpet-shaped structure at both ends of the second section 72 from deforming, the second section 72 of the water outlet pipe 7 is preferably a rigid pipe. The first section 71 and the second section 72 of the water outlet pipe 7 can be optionally bonded or hot-melt connected. Preferably, in this embodiment, the first section 71 and the second section 72 of the water outlet pipe 7 are connected to each other by a connector.

[0048] Example 2

[0049] Example 2 relates to a steam heating device. The steam heating device of Example 2 includes the wastewater recycling device 100 of Example 1 of the present invention, which can save water without excessively increasing the volume of the steam heating device, and reduce the frequency of users dumping wastewater, which helps to improve user experience. The steam heating device is preferably, but not limited to, an electrical appliance such as a steam oven, a steam mop, or an electric iron. The water user can be optionally a steam generator in the steam heating device.

[0050] In this embodiment, the steam heating device also includes a drainage pump connected to the water inlet pipe 41. The input end of the drainage pump is connected to the water outlet of the water user, and can drive the wastewater from the water outlet of the water user into the wastewater chamber 12 of the wastewater recycling device 100. The steam heating device also includes a water supply pump arranged in the water outlet pipe 7. The input end of the water supply pump is connected to the water outlet of the clean water chamber 11, and can drive the purified water in the clean water chamber 11 into the water inlet of the water user and be recycled. The steam heating device of this embodiment can use its original drainage pump and water supply pump to provide power for the water circulation in the wastewater recycling device 100. The water user is preferably, but not limited to, a steam generator.

[0051] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A wastewater recycling device for steam heating equipment, characterized in that: include: Housing (1); A waterproof and breathable membrane (2) is arranged in the housing (1) and divides the housing (1) into a clean water chamber (11) and a waste water chamber (12), wherein the clean water chamber (11) is suitable for being connected to a water inlet of a water user; A heating component (3) adapted to heat the wastewater chamber (12); The water inlet pipe (41) comprises a heat exchange pipe section (411) capable of cooling the clean water chamber (11) and a water outlet end (412) extending into the waste water chamber (12); the water inlet pipe (41) is suitable for being connected to a water outlet of a water user; the heat exchange pipe section (411) is spirally wound around the shell (1) and is located outside the clean water chamber (11).

2. The wastewater recycling device according to claim 1, characterized in that: The cross section of the heat exchange pipe section (411) is semicircular, and the bottom edge of the semicircle is arranged downward.

3. The wastewater recycling device according to claim 1, characterized in that: The steam heating device further comprises a cooling mechanism (5) arranged upstream of the heat exchange pipe section (411), wherein the cooling mechanism (5) is suitable for cooling the water in the water inlet pipe (41).

4. The wastewater recycling device according to claim 1, characterized in that: A venturi nozzle (42) is provided at the water outlet end (412) of the water inlet pipe (41).

5. The wastewater recycling device according to claim 4, characterized in that: A flow cavity is formed in the Venturi nozzle (42), and a perforated partition plate (421) is arranged in the flow cavity.

6. The wastewater recycling device according to any one of claims 1 to 5, characterized in that: The waterproof and breathable membrane (2) is horizontally arranged in the housing (1), and the clean water chamber (11) is located above the waste water chamber (12).

7. The wastewater recycling device according to claim 6, characterized in that: It also comprises a water outlet pipe (7), the water outlet pipe (7) being suitable for being connected to the water inlet of the water user, the water outlet pipe (7) being connected to the top wall of the water purification chamber (11) and extending into the water purification chamber (11), and a flow gap being formed between the lower end of the water outlet pipe (7) and the waterproof breathable membrane (2).

8. The wastewater recycling device according to claim 7, characterized in that: The water outlet pipe (7) comprises: A first section (71) connected to the top wall of the water purification chamber (11) and adapted to be connected to a water inlet of a water user; The second section (72) is connected to the first section (71) and is arranged in the water purification chamber (11); both ends of the second section (72) are trumpet-shaped.

9. A steam heating device, comprising the wastewater recycling device and water user according to any one of claims 1 to 8.

10. The steam heating device according to claim 9, characterized in that: The steam heating device further comprises a drainage pump connected to the water inlet pipe (41), the input end of the drainage pump being connected to the water outlet of the water user; and / or, The steam heating device also includes a water supply pump arranged in the water outlet pipe (7), and the input end of the water supply pump is connected to the water outlet of the water purification chamber (11).

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