Clean water tank with variable volume for airplane lavatory

Abstract

The utility model discloses a volume-variable clear water tank for an airplane washroom. The volume-variable clear water tank comprises a water tank, the elastic isolating membrane is arranged in the water tank, one end of the elastic isolating membrane is connected with the top end of the water tank, and one end far away from the top end of the water tank is connected with the bottom end of the water tank; the elastic isolating membrane isolates the interior of the water tank into a grey water cavity and a clear water cavity; the grey water cavity can collect water discharged by the clear water cavity. By means of the elastic isolating membrane, more clear water can be injected into the fixed water tank volume, the clear water tank is small in size, the water using amount of flight is increased, the clear water tank is convenient to arrange, and fuel oil consumption during flight is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of a variable - volume fresh - water tank for an aircraft lavatory, and particularly relates to a variable - volume fresh - water tank for an aircraft lavatory. Background Art

[0002] At present, in the water supply system of an aircraft vacuum lavatory on the market, the fresh - water tank provides water for handwashing and toilet flushing, and the fresh - water tank has a fixed volume. When the usage times of the flight lavatory are many, the amount of fresh water is insufficient. Blindly increasing the volume of the fresh - water tank requires more space in the aircraft, which is difficult to arrange. Also, more fresh - water filling before flight increases the fuel consumption during flight.

[0003] Therefore, how to solve the problems of large space occupation in the aircraft and difficult arrangement of the fresh - water tank has become an urgent problem for those skilled in the art. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a variable - volume fresh - water tank for an aircraft lavatory, so as to solve the foregoing problems existing in the prior art.

[0005] In order to achieve the above - mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0006] A variable - volume fresh - water tank for an aircraft lavatory includes a water tank;

[0007] An elastic isolation membrane is arranged inside the water tank. One end of the elastic isolation membrane is connected to the top end of the water tank, and the end far from the top end of the water tank is connected to the bottom end of the water tank;

[0008] The elastic isolation membrane isolates the inside of the water tank into a gray - water cavity and a fresh - water cavity;

[0009] The gray - water cavity can collect the water discharged from the fresh - water cavity.

[0010] In some specific embodiments, it further includes:

[0011] A gray - water inlet pipe is arranged at the top of the water tank. One end of the gray - water inlet pipe is communicated with the gray - water cavity of the water tank; the end far from the gray - water cavity is communicated with the outlet of the washbasin;

[0012] A hand - washing outlet pipe is arranged at the top of the water tank. One end of the hand - washing outlet pipe is communicated with the fresh - water cavity of the water tank; the end far from the fresh - water cavity is communicated with the hand - washing faucet of the washbasin.

[0013] In some specific embodiments, it further includes:

[0014] A toilet flushing outlet pipe is arranged at the top of the water tank. One end of the toilet flushing outlet pipe is communicated with the gray - water cavity, and the end far from the gray - water cavity is communicated with the hand - washing outlet pipe;

[0015] A flushing electric valve is arranged on the toilet flushing outlet pipe;

[0016] An air inlet is provided at one end of the toilet flushing outlet pipe adjacent to the handwashing outlet pipe.

[0017] In some specific embodiments, it further includes:

[0018] Liquid level gauges; two are provided;

[0019] The first liquid level gauge is installed at the top of the grey water chamber for detecting the water level in the grey water chamber;

[0020] The second liquid level gauge is installed at the top of the clean water chamber for detecting the water level in the clean water chamber.

[0021] In some specific embodiments, it further includes:

[0022] A water filling pipe and an overflow pipe;

[0023] The overflow pipe is arranged at one end of the second liquid level gauge away from the handwashing outlet pipe; the overflow pipe is communicated with the clean water chamber;

[0024] The water filling pipe is arranged at one end of the overflow pipe away from the second liquid level gauge, and the water filling pipe is communicated with the clean water chamber.

[0025] In some specific embodiments, it further includes:

[0026] A first drain pipe and a second drain pipe;

[0027] The first drain pipe is arranged at the bottom end of the water tank and is communicated with the grey water chamber at one end;

[0028] The second drain pipe is arranged at the bottom end of the water tank, is communicated with the clean water chamber at one end, and is communicated with the first drain pipe at the end away from the clean water chamber;

[0029] A check valve is further arranged on the second drain pipe, and the check valve is used to prevent the pollution of the clean water chamber by the grey water chamber.

[0030] In some specific embodiments, the elastic isolation membrane is a flexible water bag.

[0031] In some specific embodiments, the flexible water bag is composed of multiple layers of elastic membrane layers bonded together.

[0032] In some specific embodiments, the elastic membrane layers are, from the inside to the outside, a polyethylene (PE) membrane layer, a nylon (PA) membrane layer, and a polyethylene terephthalate (PET) membrane layer.

[0033] In some specific embodiments, the length of the water tank is: 800 mm - 1115 mm; the width of the water tank is:

[0034] 450 mm - 549 mm;

[0035] The height of the water tank is: 480 mm - 595 mm;

[0036] The thickness of the elastic isolation membrane is 8 mm - 15 mm.

[0037] The beneficial effects of the present utility model are as follows: The present utility model discloses a variable - volume fresh - water tank for an aircraft lavatory, including a water tank; an elastic isolation membrane disposed inside the water tank, one end of the elastic isolation membrane is connected to the top end of the water tank, and the end far from the top end of the water tank is connected to the bottom end of the water tank; the elastic isolation membrane divides the inside of the water tank into a grey - water cavity and a fresh - water cavity; the grey - water cavity can collect the water discharged from the fresh - water cavity. By providing the elastic isolation membrane, it is beneficial to inject more fresh water within a fixed water - tank volume. The present utility model realizes a smaller - volume fresh - water tank while increasing the available water volume during flight. The layout of the fresh - water tank is convenient, and it also reduces the fuel consumption during flight. Description of the Drawings

[0038] Figure 1 is a schematic structural diagram of a variable - volume fresh - water tank for an aircraft lavatory according to the present utility model;

[0039] Figure 2 is a schematic diagram of the inside of the fresh - water tank after fresh - water filling before flight according to the present utility model;

[0040] Figure 3 is a schematic diagram of the inside of the fresh - water tank after the use of the aircraft lavatory during flight according to the present utility model.

[0041] In the drawings, 100, water tank; 110, first liquid - level pressure gauge; 120, second liquid - level pressure gauge; 130, toilet flushing water outlet pipe; 140, first water discharge pipe; 150, second water discharge pipe; 160, elastic isolation membrane. Detailed Embodiment

[0042] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0043] Before the aircraft takes off, a fixed amount of fresh water is injected into the water tank 100 through the fresh - water tank filling pipe. During flight, fresh water is extracted from the hand - washing water outlet pipe for hand - washing use, and fresh water is extracted from the toilet flushing water outlet pipe 130 for toilet flushing. The fresh - water tank 100 is provided with a filling pipe, an overflow pipe and a water discharge pipe, an air inlet is provided at the top to balance the air pressure inside the fresh - water tank 100, and a liquid - level detector is provided at the top to measure the remaining water volume in the tank.

[0044] Refer to Figure 1 、 Figure 2 and Figure 3An aircraft lavatory with a variable - volume fresh - water tank 100 as shown, including the water tank 100. An elastic isolation membrane is arranged inside the water tank 100. One end of the elastic isolation membrane is connected to the top end of the water tank 100, and the end far from the top end of the water tank 100 is connected to the bottom end of the water tank 100. The elastic isolation membrane divides the inside of the water tank 100 into a gray - water chamber and a fresh - water chamber. The gray - water chamber can collect the water discharged from the fresh - water chamber.

[0045] In this embodiment, one of an installation hole and a hook is provided at the top of the elastic isolation membrane, and the other of the installation hole and the hook is correspondingly provided on the shell of the water tank 100. Through the cooperation of the hook and the installation hole, the elastic isolation membrane is fixed to the shell of the water tank 100. A buckle structure is also provided at the top, and a clamping groove is correspondingly provided on the shell. Through the cooperation of the buckle structure and the clamping groove, the elastic isolation membrane 160 is fixed to the shell of the water tank 100. One end of the buckle structure penetrates through the elastic isolation membrane 160, and the buckle structure and the elastic isolation membrane 160 are heat - sealed into an integral sealing structure. The bottom end of the elastic isolation membrane 160 is also hermetically and fixedly connected to the bottom of the water tank 100, and the left and right ends of the elastic isolation membrane 160 are also hermetically and fixedly connected to the side walls of the water tank 100 together. The water tank realizes the mutual isolation of the gray - water chamber and the fresh - water chamber through the elastic isolation membrane.

[0046] In some specific embodiments, it further includes a gray - water inlet pipe, which is arranged at the top of the water tank 100, with one end communicating with the gray - water chamber of the water tank; the end far from the gray - water chamber communicates with the outlet of the washbasin. A wash - water outlet pipe is arranged at the top of the water tank 100, with one end communicating with the fresh - water chamber of the water tank 100. The end far from the fresh - water chamber communicates with the gray - water inlet pipe through the washbasin.

[0047] In some specific embodiments, it further includes a toilet flushing outlet pipe 130, which is arranged at the top of the water tank 100, with one end communicating with the gray - water chamber, and the end far from the gray - water chamber communicates with the wash - water outlet pipe. A flushing electric valve is arranged on the toilet flushing outlet pipe 130. An air inlet is arranged at the end of the toilet flushing outlet pipe 130 adjacent to the wash - water outlet pipe.

[0048] In some specific embodiments, it further includes a liquid - level pressure gauge. There are two of them. The first liquid - level pressure gauge 110 is installed at the top of the gray - water chamber for detecting the water level of the gray - water chamber. The second liquid - level pressure gauge 120 is installed at the top of the fresh - water chamber for detecting the water level of the fresh - water chamber.

[0049] In some specific embodiments, it further includes a water - filling pipe and an overflow pipe. The overflow pipe is arranged at the end of the second liquid - level pressure gauge 120 far from the wash - water outlet pipe; the overflow pipe communicates with the fresh - water chamber;

[0050] The water inlet pipe is arranged at one end of the overflow pipe away from the second liquid level pressure gauge 120, and the water inlet pipe is communicated with the fresh water chamber. The connection part of the overflow pipe and the water tank is arranged at the top end of the fresh water chamber; the connection part of the water inlet pipe and the water tank is arranged at the top end of the fresh water chamber.

[0051] In some specific embodiments, it further includes a first drain pipe 140 and a second drain pipe 150. The first drain pipe 140 is arranged at the bottom end of the water tank 100, and one end is communicated with the grey water chamber. The second drain pipe 150 is arranged at the bottom end of the water tank 100, one end is communicated with the fresh water chamber, and the end away from the fresh water chamber is communicated with the first drain pipe 140. A one-way valve is further arranged on the second drain pipe 150, and the one-way valve is used to prevent the pollution of the fresh water chamber by the grey water in the grey water chamber.

[0052] In some specific embodiments, the elastic isolation membrane 160 is a flexible water bag. It should be noted that the isolation of fresh water and grey water is not limited to flexible water bags, and can be all soft film materials that can isolate water.

[0053] In some specific embodiments, the flexible water bag is composed of multiple layers of elastic membrane layers bonded together.

[0054] In some specific embodiments, the elastic membrane layer is, from the inside to the outside, a polyethylene (PE) membrane layer, a nylon (PA) membrane layer, and a polyethylene terephthalate (PET) membrane layer in sequence.

[0055] In some specific embodiments, the length of the water tank 100 is: 800 mm - 1115 mm; the width of the water tank 100 is: 450 mm - 549 mm; the height of the water tank 100 is: 480 mm - 595 mm; the thickness of the elastic isolation membrane 160 is 8 mm - 15 mm.

[0056] In this embodiment, for example, when flushing the toilet once and washing hands once after using the toilet, the toilet flushing consumes 0.25 L of water, and the handwashing water consumes 0.25 L. In the present invention, the handwashing grey water enters the flexible water bag in the grey water chamber, and the grey water can be used for flushing the toilet after using it. In principle, when the water injection volume is quantified before flight, the fresh water tank 100 can extend the usage time by one time.

[0057] The working principle of the present utility model:

[0058] By adding the elastic isolation membrane 160 inside the fresh water tank 100, the present utility model divides the fresh water tank 100 into a completely isolated fresh water chamber and grey water chamber. The elastic isolation membrane 160 has high elasticity and high strength. When filling water before flight, the fresh water chamber expands, maximizing the amount of fresh water. As the lavatory is used, the water volume in the fresh water chamber decreases, and the grey water chamber collects the handwashing grey water and thus expands. The fresh water in the grey water chamber is specially used for flushing the toilet. The variable volume fresh water tank 100 utilizes the principle of the mutual growth and decline of the fresh water chamber and the grey water chamber to achieve a smaller volume of the fresh water tank 100 while increasing the available water volume during flight.

[0059] Before flight, inject a certain amount of clean water into the clean water tank 100 through the water supply pipe. During flight, the clean water in the clean water chamber is pumped out for handwashing. Part of the handwashing grey water enters the grey water chamber through the grey water inlet pipe. During flight, the water in the grey water chamber is preferentially pumped out for toilet flushing. When the water level in the grey water chamber is detected to be insufficient, the flushing electric valve connects the clean water chamber and the toilet flushing outlet pipe 130, and at the same time closes the grey water chamber and the handwashing outlet pipe passage, and starts to pump the water in the clean water chamber for toilet flushing. A one-way valve is set between the drain pipes of the clean water chamber and the grey water chamber to prevent the grey water chamber from polluting the clean water chamber.

[0060] By adopting the above technical solutions disclosed by the present utility model, the following beneficial effects are obtained:

[0061] The present utility model discloses a variable-volume clean water tank 100 for an aircraft lavatory, including a water tank 100; an elastic isolation membrane 160, which is arranged inside the water tank 100. One end of the elastic isolation membrane 160 is connected to the top end of the water tank 100, and the end far from the top end of the water tank 100 is connected to the bottom end of the water tank 100; the elastic isolation membrane 160 isolates the inside of the water tank 100 into a grey water chamber and a clean water chamber; the grey water chamber can collect the water discharged from the clean water chamber. By setting the elastic isolation membrane 160, it is beneficial to inject more clean water within the fixed volume of the water tank 100. The present utility model realizes that the volume of the clean water tank 100 is small and the available water volume during flight is increased. The layout of the clean water tank 100 is convenient, and the fuel consumption during flight is also reduced.

[0062] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A fresh water tank with a variable volume for an aircraft lavatory, characterized in that: include: Water tank; An elastic isolation membrane is arranged inside the water tank, one end of the elastic isolation membrane is connected to the top of the water tank, and one end away from the top of the water tank is connected to the bottom of the water tank; The elastic isolation membrane isolates the interior of the water tank into a gray water chamber and a clean water chamber; The grey water chamber is capable of collecting water discharged from the clean water chamber.

2. The aircraft lavatory with a variable volume fresh water tank according to claim 1, characterized in that: Also includes: A grey water inlet pipe is arranged at the top of the water tank, one end of which is connected to the grey water cavity of the water tank; and one end away from the grey water cavity is connected to the water outlet of the wash basin; A hand-washing water outlet pipe is arranged at the top of the water tank, one end of which is connected to the clean water chamber of the water tank; and the other end away from the clean water chamber is connected to the water outlet faucet of the wash basin.

3. The aircraft lavatory with a variable volume fresh water tank according to claim 2, characterized in that: Also includes: A toilet flushing water outlet pipe is arranged on the top of the water tank, one end of which is connected to the gray water chamber, and the other end away from the gray water chamber is connected to the hand washing water outlet pipe; The toilet flushing water outlet pipe is provided with a flushing electric valve; An air inlet is arranged at one end of the toilet flushing water outlet pipe adjacent to the hand washing water outlet pipe.

4. The aircraft lavatory with a variable volume fresh water tank according to claim 1, characterized in that: Also includes: Liquid level pressure gauge; two are provided; The first liquid level pressure measuring device is installed at the top of the gray water chamber to detect the water level of the gray water chamber; The second liquid level pressure measuring device is installed at the top of the clean water chamber to detect the water level of the clean water chamber.

5. The aircraft lavatory with a variable volume fresh water tank according to claim 1, characterized in that: Also includes: Filling and overflow pipes; The overflow pipe is arranged at one end of the second liquid level pressure measuring device away from the hand washing water outlet pipe; the overflow pipe is connected to the clean water chamber; The water supply pipe is arranged at one end of the overflow pipe away from the second liquid level pressure measuring device, and the water supply pipe is communicated with the clean water chamber.

6. The aircraft lavatory with a variable volume fresh water tank according to claim 1, characterized in that: Also includes: a first drain pipe and a second drain pipe; The first drain pipe is arranged at the bottom end of the water tank, and one end of the first drain pipe is connected to the gray water chamber; The second drain pipe is arranged at the bottom end of the water tank, one end of which is connected to the clean water chamber, and the other end away from the clean water chamber is connected to the first drain pipe; The second drain pipe is also provided with a one-way valve, and the one-way valve is used to prevent the water in the grey water chamber from polluting the clean water chamber.

7. The aircraft lavatory with a variable volume fresh water tank according to claim 1, characterized in that: The elastic isolation membrane is a flexible water bag.

8. The aircraft lavatory with a variable volume fresh water tank according to claim 7, characterized in that: The flexible water bag is formed by bonding multiple elastic film layers.

9. The aircraft lavatory with a variable volume fresh water tank according to claim 8, characterized in that: The elastic film layers are a polyethylene PE film layer, a nylon PA film layer, and a polyethylene terephthalate PET film layer from the inside to the outside.

10. The aircraft lavatory with a variable volume fresh water tank according to claim 8, characterized in that: The length of the water tank is: 800mm-1115mm; the width of the water tank is: 450mm-549mm; The height of the water tank is: 480mm-595mm; The thickness of the elastic isolation membrane is 8mm-15mm.

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