External feeding device with pressure reducing valve and washing equipment

Abstract

The invention discloses an external feeding device with a pressure reducing valve and washing equipment, the external feeding device comprises a liquid guide pipeline, a liquid outlet pipeline and a pressure obtaining device, the liquid guide pipeline is used for mixing water and an additive and guiding the mixed liquid to the liquid outlet pipeline; a pressure reducing valve is arranged at the connecting position of the liquid guide pipeline and the liquid outlet pipeline, the pressure value of liquid in the liquid guide pipeline is obtained through the pressure obtaining device, the pressure reducing valve is adjusted according to comparison of the obtained pressure value and a preset threshold value, and adjustment of the flowing pressure of the liquid in the whole loop of the feeding device is achieved. The pressure reducing valve is additionally arranged on the basis of an existing releasing device, the circulation pressure of fluid in the liquid guiding pipeline in the releasing device is adjusted through the pressure reducing valve, the integrity of the whole loop structure is guaranteed, then normal work of the whole loop is guaranteed, and the overall reliability and user experience are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of household appliances, and in particular relates to an external dispensing device and a washing device provided with a pressure reducing valve. Background Art

[0002] At present, the application of automatic detergent dispensers in the washing machine industry is becoming more and more popular. The water circuits of these dispensers are not equipped with pressure reducing valves. When the pressure of the tap water network changes, it will impact the water circuits of the dispensers, causing quality problems such as rupture and overflow of the water circuits of the dispensers, causing property losses to users.

[0003] The Chinese patent application number 201710030780.8 discloses an external detergent dispensing device, a control method thereof and a washing machine. The external detergent dispensing device comprises: a detergent box, a water inlet pipeline, a dispensing pipeline and an external circuit board. The two ends of the water inlet pipeline are respectively connected to the tap water joint and the washing machine water inlet valve. The detergent box is connected to the water inlet pipeline through the dispensing pipeline. A dispensing mechanism is installed on the dispensing pipeline for dispensing detergent into the water inlet pipeline. A water flow sensor is arranged on the water inlet pipeline. The water flow sensor and the dispensing mechanism are both connected to the external circuit board. On the basis of the existing ordinary washing machine, the present invention completes the connection with the washing machine body by adding an external detergent box and an external circuit board. The water flow sensor detects the change of water flow, obtains the detergent dispensing signal and the stop dispensing signal, and realizes the automatic dispensing function of the ordinary washing machine. The water flow sensor can detect the change of water flow, but cannot realize the control of water pressure. If the pressure of the tap water network changes, the structure fails, which may cause the waterway to rupture and overflow.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art. On the one hand, the present invention provides an external delivery device provided with a pressure reducing valve. The delivery device is provided with a pressure reducing valve, and the flow pressure of the fluid in the liquid circuit in the delivery device is adjusted by the pressure reducing valve to protect the integrity of the liquid circuit structure.

[0006] A second aspect of the present invention provides a washing device connected to the placing device.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0008] An external delivery device provided with a pressure reducing valve comprises: a liquid conducting pipeline and a liquid discharging pipeline,

[0009] The liquid guiding pipeline is used to mix water and additives and guide the mixed liquid to the liquid outlet pipeline;

[0010] A pressure reducing valve is provided at the connection between the liquid guiding pipeline and the liquid outlet pipeline, which is used to adjust the pressure of the liquid flowing in the liquid guiding pipeline.

[0011] Advantageously, the provision of a pressure reducing valve can adjust the water pressure at the water inlet end of the liquid guiding pipeline, thereby achieving the goal of adjusting the flow pressure of the fluid in the liquid guiding pipeline.

[0012] Furthermore, the external delivery device provided with a pressure reducing valve further comprises: a delivery pipeline and an additive box;

[0013] The additive box is connected to the liquid guiding pipeline through the delivery pipeline;

[0014] Furthermore, a delivery mechanism is installed on the delivery pipeline for controlling the delivery of additives into the guide liquid pipeline.

[0015] Furthermore, a stirring device is provided on the liquid guiding pipeline to fully blend the additive with the water in the liquid guiding pipeline.

[0016] Furthermore, a first one-way valve is provided at the water inlet end of the liquid guiding pipeline, which is used to prevent the mixed liquid from flowing back while allowing water to flow into the liquid guiding pipeline.

[0017] Advantageously, the first one-way valve is provided to effectively prevent the mixed liquid from exiting from the water inlet of the liquid guiding pipeline and entering the water inlet pipeline due to siphoning.

[0018] Furthermore, a second one-way valve is provided between the delivery mechanism and the liquid guiding pipeline to prevent the mixed liquid in the liquid guiding pipeline from entering the delivery pipeline.

[0019] Furthermore, a switching valve is provided between the delivery mechanism and the additive box for switching between different additive boxes.

[0020] Furthermore, a partition is provided between the additive box and the delivery mechanism to prevent the additive from leaking into the electrical components.

[0021] Furthermore, the external delivery device provided with a pressure reducing valve further comprises: a pressure acquisition device and a control panel,

[0022] The pressure acquisition device is used to acquire the water pressure at the water inlet end of the liquid guiding pipeline;

[0023] The pressure acquisition device, the delivery mechanism and the pressure reducing valve are all connected to the control panel.

[0024] Furthermore, the external delivery device provided with a pressure reducing valve further comprises: a water inlet pipeline and a bypass circuit;

[0025] The bypass circuit is used to connect the water outlet pipeline and the liquid outlet pipeline;

[0026] The bypass circuit is provided with a reversing valve for switching the connection between the liquid guiding pipeline and the liquid outlet pipeline or between the liquid guiding pipeline and the water outlet pipeline.

[0027] A second aspect of the present invention provides a washing device, which is connected to the external delivery device provided with a pressure reducing valve.

[0028] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art: adding a pressure reducing valve to the liquid guiding pipeline can protect the integrity of the entire liquid circuit structure; when the pressure of the tap water network changes, the normal operation of the entire liquid circuit structure can be guaranteed, thereby improving the overall reliability and user experience.

[0029] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0031] Figure 1 It is a simplified schematic diagram of the delivery device of the present invention;

[0032] Figure 2 is a cross-sectional view of the pipeline and valve body of the present invention;

[0033] Figure 3 It is a flow chart of a pressure regulating method of a pressure reducing valve of the present invention.

[0034] In the figure: 1. liquid guide pipeline; 2. liquid outlet pipeline; 3. bypass circuit; 4. water outlet pipeline; 5. water inlet pipeline; 6. delivery pipeline; 7. delivery mechanism; 8. stirring device; 9. pressure reducing valve; 10. first one-way valve; 11. second one-way valve; 12. switching valve; 13. reversing valve; 14. additive box; 15. partition; 16. additive delivery port.

[0035] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0037] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0038] 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The first aspect of the present invention, as Figure 1 and Figure 2 As shown, an external delivery device with a pressure reducing valve is provided, and the external delivery device includes a liquid guiding pipeline 1 and a liquid outlet pipeline 2. A pressure reducing valve 9 is provided at the connection between the liquid guiding pipeline 1 and the liquid outlet pipeline 2 to adjust the pressure of the liquid flowing in the liquid guiding pipeline 1.

[0040] Further, the external delivery device also includes a delivery pipeline 6 and an additive box 14, the additive box 14 is connected to the liquid guide pipeline 1 through the delivery pipeline 6, and a delivery mechanism 7 is provided on the delivery pipeline 6, and the delivery mechanism 7 can select a delivery pump or a venturi tube. Here, this embodiment preferably adopts a delivery pump with convenient control and accurate delivery, such as a piston pump, a peristaltic pump, etc. The delivery mechanism 7 delivers the additive in the delivery pipeline 6 into the liquid guide pipeline 1.

[0041] Furthermore, a first one-way valve 10 is provided at the water inlet end of the liquid guiding pipeline 1, so that the water in the water inlet pipeline 5 can enter the liquid guiding pipeline 1 through the first one-way valve 10, and can prevent the mixed liquid in the liquid guiding pipeline 1 from being diverted from the water inlet of the liquid guiding pipeline 1 into the water inlet pipeline 5 due to the effect of siphon.

[0042] Furthermore, a second one-way valve 11 is installed at the connection between the delivery mechanism 7 installed on the delivery pipeline 6 and the liquid guide pipeline 1, which can allow the additive to enter the delivery pipeline 6 through the additive box 14 and then be delivered into the liquid guide pipeline 1 by the delivery mechanism 7, while preventing the mixed liquid in the liquid guide pipeline 1 from entering the delivery mechanism 7 and then entering the additive box 14.

[0043] Furthermore, a switching valve 12 is provided at the connection end between the dispensing mechanism 7 and the additive box 14, so that switching between different additive boxes 14 can be achieved, and further switching and combining between different additive boxes 14 can be achieved according to the needs of the user.

[0044] Furthermore, an additive delivery port 16 is provided on the liquid conduit 1, and a stirring device 8 is provided between the additive delivery port 16 and the liquid outlet conduit 2. The additive is delivered into the liquid conduit 1 through the additive delivery port 16, and the stirring device 8 can better promote the additive to be integrated into the water, thereby improving the performance / decontamination ability of the detergent.

[0045] It should be noted that, in order to achieve this effect better, the stirring device 8 provided in this embodiment is an impeller flow meter, and the flow meter is compatible with the function of a mixing chamber by modifying the impeller of the flow meter. The edge of the impeller has an irregular serrated surface at a certain angle to the rotation direction, which generates turbulence / turbulence during the rotation of the impeller, accelerating the dissolution of the laundry detergent.

[0046] Furthermore, according to the overall structure of the dosing device, a partition 15 is provided below the additive box 14, and all electrical components are installed below the partition 15, which can prevent the additive from leaking from the additive box 14 and entering the electrical components to cause accidents.

[0047] Specifically, a guide groove is added at the front of the partition 15, and retaining ribs are added in the other three directions, so that when additives leak, they can be concentrated in the guide groove and eventually drained to a safe position to prevent electrical accidents.

[0048] Furthermore, the external delivery device provided with the pressure reducing valve 9 is also provided with a water outlet pipeline 4 and a bypass circuit 3. The bypass circuit 3 is provided between the water outlet pipeline 4 and the liquid outlet pipeline 2, and is used to connect the water outlet pipeline 4 and the liquid outlet pipeline 2. A reversing valve 13 is provided on the bypass circuit 3, and the connection between the liquid guide pipeline 1 and the liquid outlet pipeline 2 or the connection between the liquid guide pipeline 1 and the water outlet pipeline 4 can be achieved through the control of the reversing valve 13.

[0049] Furthermore, the delivery device is also provided with a pressure acquisition device and a control panel capable of acquiring pressure. The pressure acquisition device, the pressure reducing valve 9 and the delivery mechanism 7 are all connected to the control panel. The pressure acquisition device sends the acquired pressure signal to the control panel, and the control panel sends instructions to adjust the pressure reducing valve 9 to achieve the adjustment of the flow pressure of the fluid in the pipeline.

[0050] It should be noted that the pressure acquisition device provided in the present invention can be a detection element provided in the external delivery device itself, which detects the water pressure at the water inlet and then obtains the pressure value; it can also be a communication unit, which is installed in the external delivery device to obtain the water pressure by sharing data with other devices in the home that detect the water pressure device; it can also be the water pressure in the local area obtained through the Internet as the water pressure at the water inlet end of the liquid guide pipe 1 of the external delivery device.

[0051] Specifically, the pressure regulating method of the external delivery device provided with a pressure reducing valve comprises steps S10 to S40:

[0052] S10: obtaining the water pressure at the water inlet end of the liquid guiding pipeline;

[0053] In this step, the pressure acquisition device acquires the water pressure at the water inlet end of the liquid guiding pipeline 1, and transmits the acquired water pressure signal to the control panel.

[0054] S20: Determine whether the pressure value of the inlet water pressure is greater than a first preset threshold;

[0055] In this step, the acquired pressure value of the inlet water pressure is compared with the first preset threshold value to determine whether the detected pressure value of the inlet water pressure is greater than the first preset threshold value.

[0056] S30: If the pressure value of the inlet water pressure is greater than the first preset threshold, the pressure reducing valve is controlled to adjust;

[0057] S40: The fluid enters the liquid outlet pipeline or the water outlet pipeline through the liquid guide pipeline.

[0058] Here, if it is determined that the detected water inlet pressure value is greater than the first preset threshold, the pressure reducing valve 9 is adjusted, and the fluid in the liquid guiding pipeline 1 is pressure-regulated through the pressure reducing valve 9 and then enters the liquid outlet pipeline 2 or the water outlet pipeline 4.

[0059] Optionally, if it is determined that the detected water inlet pressure value is less than or equal to a first preset threshold, the pressure reducing valve 9 is not adjusted, and the fluid in the liquid guiding pipeline 1 directly flows into the liquid outlet pipeline 2 or the water outlet pipeline 4.

[0060] A second aspect of the present invention provides a washing device connected to an external delivery device provided with a pressure reducing valve, wherein the washing device is provided with a delivery box and a water tank.

[0061] Furthermore, the washing device is provided with a water inlet and a liquid inlet, and the liquid inlet is connected to the additive delivery device of the washing device, or directly delivers liquid into the barrel. The liquid outlet pipeline 2 of the external delivery device is connected to the liquid inlet of the washing device, and is used to deliver the mixed liquid in the liquid outlet pipeline 2 into the washing device; the water outlet pipeline 4 of the external delivery device is connected to the water inlet of the washing device, and is used to inject water into the washing device.

[0062] Furthermore, when the additive is added, the reversing valve 13 controls the liquid guiding pipeline 1 to be connected with the liquid outlet pipeline 2, the adding mechanism 7 adds the additive in the additive box 14 into the liquid guiding pipeline 1, and the external adding device adds a mixture of additive and water into the washing equipment; when the reversing valve 13 controls the liquid guiding pipeline 1 to be connected with the water outlet pipeline 4, the external adding device stops adding the additive, and the external adding device only provides the water inlet function.

[0063] After the user installs the external delivery device provided with the pressure reducing valve 9, the present invention obtains the pressure of the fluid in the liquid guiding pipeline 1, and adjusts the pressure reducing valve 9 to adjust the liquid flow pressure in the liquid guiding pipeline 1, so as to ensure that the pressure of the fluid entering the liquid outlet pipeline 2 from the liquid guiding pipeline 1 reaches the first preset threshold value, thereby ensuring the integrity of the entire waterway and promoting the normal operation of the entire waterway.

[0064] Specifically, when the washing device needs to be washed, the dispensing device dispenses liquid into the washing device. The first one-way valve 10 between the water inlet pipeline 5 and the liquid guiding pipeline 1 is opened, and water enters the liquid guiding pipeline 1 from the water inlet pipeline 5; the second one-way valve 11 and the switching valve 12 on the dispensing pipeline 6 are opened, and the additive in the additive box 14 enters the liquid guiding pipeline 1 through the dispensing mechanism 7 on the dispensing pipeline 6. The water and additive in the liquid guiding pipeline 1 are fully blended after being stirred by the stirring device 8. At this time, the reversing valve 13 controls the liquid guiding pipeline 1 and the liquid outlet pipeline 2 to be connected, and the mixed liquid enters the liquid outlet pipeline 2 from the liquid guiding pipeline 1. In this process, the pressure acquisition device acquires the water pressure at the water inlet end of the liquid guiding pipeline 1, and determines whether the pressure value is greater than the first preset threshold value. If it is greater than the first preset threshold value, the pressure reducing valve 9 is adjusted to perform pressure reduction adjustment. The mixed liquid after pressure reduction adjustment enters the liquid outlet pipeline 2, and then is discharged through the liquid outlet pipeline 2, and enters the washing device through the liquid inlet of the washing device, completing the dispensing of liquid into the washing device.

[0065] When it is necessary to inject water into the washing equipment, the first one-way valve 10 between the water inlet pipe 5 and the liquid guiding pipe 1 is opened, and water enters the liquid guiding pipe 1 from the water inlet pipe 5; the second one-way valve 11 and the switching valve 12 on the delivery pipe 6 are closed, and additives are not delivered into the liquid guiding pipe 1. At this time, there is only water in the liquid guiding pipe 1. The reversing valve 13 controls the connection between the liquid guiding pipe 1 and the water outlet pipe 4. The water in the liquid guiding pipe 1 enters the washing equipment through the water outlet pipe 4, and water is injected into the washing equipment. In this process, the pressure acquisition device obtains the water pressure at the water inlet end of the liquid guiding pipe 1, and determines whether the pressure value is greater than the first preset threshold value. If it is greater than the first preset threshold value, the pressure reducing valve 9 is adjusted to perform pressure reduction adjustment. The water after pressure reduction adjustment enters the water outlet pipe 4, and then enters the washing equipment. After the washing equipment is filled with water and the additives are delivered, the washing work starts.

[0066] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details, for example, the installation method of the pressure reducing valve, the pressure regulating method, etc. In some embodiments, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0067] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this method of disclosure should not be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim.

[0068] Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment.The claims following the Detailed Description are thus hereby expressly incorporated into this Detailed Description, with each claim standing on its own as a separate embodiment of this invention.

[0069] All features disclosed in this specification (including accompanying claims, abstracts and drawings) and all processes or units of any device disclosed in this specification (including accompanying claims, abstracts and drawings) may be combined in any combination, except that at least some of such features and / or processes or units are mutually exclusive. Unless otherwise explicitly stated, each feature disclosed in this specification (including accompanying claims, abstracts and drawings) may be replaced by an alternative feature that provides the same, equivalent or similar purpose.

[0070] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims below, any one of the claimed embodiments may be used in any combination.

[0071] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets should not be constructed as a limitation to the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of multiple such elements. In a unit claim that lists several devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order. These words may be interpreted as names.

[0072] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. An external delivery device provided with a pressure reducing valve, characterized in that: include, The inlet and outlet pipes, The liquid guiding pipeline is used to mix water and additives and guide the mixed liquid to the liquid outlet pipeline; A pressure reducing valve is provided at the connection between the liquid guiding pipeline and the liquid outlet pipeline, which is used to adjust the pressure of the liquid flowing in the liquid guiding pipeline.

2. The external delivery device with a pressure reducing valve according to claim 1, characterized in that: Also includes: A delivery pipeline and an additive box, wherein the additive box is connected with the liquid guide pipeline through the delivery pipeline; The delivery pipeline is provided with a delivery mechanism for controlling the delivery of additives into the guide liquid pipeline.

3. The external delivery device with a pressure reducing valve according to claim 2, characterized in that: The liquid guiding pipeline is provided with a stirring device for fully blending the additive with the water in the liquid guiding pipeline.

4. The external delivery device with a pressure reducing valve according to claim 3, characterized in that: include: The water inlet end of the liquid guiding pipeline is provided with a first one-way valve for achieving water inlet into the liquid guiding pipeline while preventing the mixed liquid from flowing back.

5. The external delivery device with a pressure reducing valve according to claim 2, characterized in that: A second one-way valve is provided between the delivery mechanism and the liquid guiding pipeline to prevent the mixed liquid in the liquid guiding pipeline from entering the delivery pipeline.

6. The external delivery device with a pressure reducing valve according to claim 5, characterized in that: A switching valve is provided between the delivery pipeline and the additive box for switching between different additive boxes.

7. The external delivery device with a pressure reducing valve according to claim 6, characterized in that: A partition is provided between the additive box and the delivery mechanism to prevent the additive from leaking into the electrical components.

8. The external delivery device with a pressure reducing valve according to claim 2, characterized in that: Also includes: A pressure acquisition device and a control panel, wherein the pressure acquisition device is used to acquire the water pressure at the water inlet end of the liquid guiding pipeline; The pressure acquisition device, the delivery mechanism and the pressure reducing valve are all connected to the control panel.

9. The external delivery device with a pressure reducing valve according to claim 8, characterized in that: Also includes: A water outlet pipeline and a bypass circuit, wherein the bypass circuit is used to connect the water outlet pipeline and the liquid outlet pipeline; The bypass circuit is provided with a reversing valve for switching the connection between the liquid guiding pipeline and the liquid outlet pipeline or between the liquid guiding pipeline and the water outlet pipeline.

10. A washing device, characterized in that: The device is connected to an external delivery device provided with a pressure reducing valve as described in any one of claims 1 to 9.

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