Instantaneous water purifier and control method thereof

Abstract

The present invention discloses an instant water purifier and a control method thereof, comprising a water purifier housing; a filter unit, a heating water purification unit, a normal temperature water purification unit, a temperature control unit and a mixing unit are sequentially arranged in the water purifier housing; the filter unit comprises: a raw water inlet, a filter element assembly and a purified water outlet sequentially arranged from top to bottom; the raw water inlet is connected to an external tap water source, and the purified water outlet is connected to a three-way pipe, and the other end of the three-way pipe is respectively connected to the heating water purification unit and the normal temperature water purification unit. Through the first instant heating module, the water purifier can initially heat the purified water to a preset insulation temperature and store it in a constant temperature water tank. The temperature control unit adjusts the ratio of hot water and normal temperature water mixed in the mixing unit according to the outlet water temperature required by the user, quickly reaches different temperatures of water outlet, and meets the diversified water demand. Compared with the prior art, the present invention has a fast heating speed and accurate outlet water temperature, and can also ensure a large flow of hot water, which is more convenient to use and reduces the waiting time for hot water.

Description

Technical Field

[0001] The present invention relates to the technical field of water purifiers, and in particular to an instant water purifier and a control method thereof. Background Art

[0002] Water purifiers, as a device widely used in homes and commercial places, mainly function to filter and purify tap water or other water sources, effectively removing impurities, bacteria, viruses, heavy metals and chemical pollutants, etc., thereby providing users with a safer and healthier source of drinking water.

[0003] In the technological development of water purifiers, instant water purifiers have gradually gained popularity among users due to their unique advantages. This type of equipment not only has the filtering function of traditional water purifiers, but also integrates the heating function, realizing the integration of purification and heating, providing users with instant and convenient hot water services, especially suitable for home environments with high demand for hot water.

[0004] However, most instant water purifiers on the market currently use hot tank rapid heating technology, that is, a heating water storage tank is set inside the water purifier. Although this technology improves the hot water flow rate to a certain extent, especially when the required temperature is close to the water temperature in the hot tank, its defects cannot be ignored.

[0005] First, the water in the hot tank needs to be kept warm continuously. When the water temperature is lower than the preset temperature, the system will automatically start the heating program. This repeated heating process not only increases energy consumption, but also affects the quality of hot water. Secondly, when making warm water, it is necessary to mix cold and hot water, resulting in fewer water outlet temperature levels, generally only about four, which cannot meet the user's demand for precise control of water temperature. In addition, when the water in the hot tank is used up, the user needs to wait for the water making and heating process to be completed, which to a certain extent affects the convenience of use.

[0006] Therefore, it is necessary to provide an instant water purifier and a control method thereof to solve the above technical problems. Summary of the invention

[0007] The present invention overcomes the deficiencies of the prior art and provides an instant water purifier and a control method thereof.

[0008] To achieve the above object, the technical solution adopted by the present invention is: an instant water purifier, comprising a water purifier housing, wherein a filtering part, a heating water purification part, a normal temperature water purification part, a temperature control part and a mixing part are sequentially arranged in the water purifier housing;

[0009] The filter part comprises: a raw water inlet, a filter element assembly and a purified water outlet arranged in sequence from top to bottom; the raw water inlet is connected to an external tap water source, the purified water outlet is arranged at the water outlet end of the filter element assembly and is connected to a three-way pipe, and the other end of the three-way pipe is respectively connected to the heating water purification part and the normal temperature water purification part;

[0010] The heating and water purification part comprises: a first instant heating module connected to the three-way pipe, a constant temperature water tank arranged at the other end of the first instant heating module, and a hot water outlet pipe arranged at one side of the constant temperature water tank; after the purified water is initially heated to a preset insulation temperature by the first instant heating module, it is stored in the constant temperature water tank; the other end of the hot water outlet pipe is connected to the mixing part;

[0011] The normal temperature water purification part comprises: a normal temperature water outlet pipe for connecting the three-way pipe and the mixing part, and a heat preservation layer covering the outer surface of the normal temperature water outlet pipe;

[0012] The temperature control unit comprises: a first flow valve arranged on the hot water outlet pipe, a second flow valve arranged on the normal temperature water outlet pipe, and a temperature matching module; the temperature matching module is preset with a plurality of water outlet temperatures, and each water outlet temperature allocates a water outlet ratio for the first flow valve and the second flow valve;

[0013] The mixing part includes: a mixing chamber, a plurality of mixing injection groups arranged in the mixing chamber, and a drain outlet arranged at the lower part of the mixing chamber; the plurality of mixing injection groups are distributed in a linear array along the vertical direction, and the mixing injection groups include: a hot water injection pipe connected to the hot water outlet pipe, and a normal temperature water injection pipe connected to the normal temperature water outlet pipe; a plurality of injection holes are opened on the surfaces of the hot water injection pipe and the normal temperature water injection pipe, the injection holes on the hot water injection pipe are inclined downward, and the injection holes on the normal temperature water injection pipe are inclined upward.

[0014] In a preferred embodiment of the present invention, the filter element assembly includes: PP cotton, compressed activated carbon, high-precision PP cotton, RO reverse osmosis membrane and post-activated carbon stacked from the outside to the inside.

[0015] In a preferred embodiment of the present invention, the temperature control unit further includes a water temperature monitoring module, and the water temperature monitoring module is arranged in the hot water outlet pipe and the normal temperature water outlet pipe to monitor the purified water temperature therein.

[0016] In a preferred embodiment of the present invention, a second instant heating module is further provided in the hot water outlet pipe to reheat the hot purified water from the constant temperature water tank according to the user set temperature; the first instant heating module and the second instant heating module are both thick film heating bodies.

[0017] In a preferred embodiment of the present invention, the hot water spray pipe and the normal temperature water spray pipe are both semicircular, one side of the straight edge of the hot water spray pipe and the normal temperature water spray pipe is fixedly connected to the inner wall of the mixing chamber, and the plurality of spray holes on the surface of the hot water spray pipe and the normal temperature water spray pipe are equidistantly distributed.

[0018] In a preferred embodiment of the present invention, the preset insulation temperature of the first instant heating module is 70-100°C, and the temperature of the constant temperature water tank is set to 70-90°C.

[0019] In a preferred embodiment of the present invention, the mixing chamber comprises: an upper mixing section and a lower confluence section;

[0020] The mixing injection group is arranged in the mixing section, and the shape of the mixing section is a semi-cylindrical shape;

[0021] The confluence section gradually decreases from top to bottom and is inclined to the lower back side of the mixed injection group. A plurality of guide grooves are arranged on the surface of the confluence section. The distance between the guide grooves gradually decreases from top to bottom, and the lower ends of the guide grooves are connected to the drain outlet.

[0022] In a preferred embodiment of the present invention, the angle between the axes of the spray holes on the hot water spray pipe and the normal temperature water spray pipe in the same group is 45-60°.

[0023] A control method for an instant water purifier based on any one of the above items comprises the following steps:

[0024] S1, the external raw water passes through the filter part, and the purified water is obtained by filtering the filter element assembly, and the purified water is respectively led to the heating water purification part and the normal temperature water purification part;

[0025] S2, the purified water leading to the heating and purification part is heated to a preset insulation temperature by the first instant heating module and then stored in a constant temperature water tank;

[0026] S3. After the user sets the outlet water temperature, the temperature control unit first detects the purified water temperature in the constant temperature water tank, and calculates the difference between the purified water temperature in the constant temperature water tank and the outlet water temperature to determine its working mode;

[0027] The temperature control unit has several working modes:

[0028] When the difference between the purified water temperature and the outlet water temperature is greater than 0, the first flow valve and the second flow valve are opened at the same time, and the outlet water ratio of the first flow valve is greater than the outlet water ratio of the second flow valve;

[0029] When the difference between the purified water temperature and the outlet water temperature = 0, the first flow valve is opened and the second flow valve is closed;

[0030] When the difference between the purified water temperature and the outlet water temperature is less than 0, the first flow valve is opened, the second flow valve is closed, the second instant heating module is started, and the heating temperature is set to the outlet water temperature;

[0031] When the user needs water at normal temperature, the first flow valve is closed and the second flow valve is opened;

[0032] S4. Hot water or normal temperature water or hot water and normal temperature water enter the mixing section and are discharged through the drain outlet.

[0033] In a preferred embodiment of the present invention, in said S4, when the difference value is greater than 0, the water outlet ratio of the first flow valve and the second flow valve is allocated according to the difference value, so that the hot water and the normal temperature water are mixed to reach the water outlet temperature;

[0034] In the mixing section, the hot water outlet pipe delivers hot water to a plurality of hot water injection pipes through a first flow valve, and the normal temperature water outlet pipe delivers normal temperature water to a plurality of normal temperature water injection pipes through a second flow valve;

[0035] The hot water injection pipe sprays hot water downward at an angle, and the normal temperature water injection pipe sprays normal temperature water upward at an angle, forming several layers of hot water spraying upward and several layers of normal temperature water spraying downward in the mixing section, forming convection to promote mixing and reach the water outlet temperature.

[0036] The present invention solves the defects existing in the background technology and has the following beneficial effects:

[0037] (1) The present invention provides an instant hot water purifier, which is provided with a filtering part, a heating water purification part, a normal temperature water purification part, a temperature control part and a mixing part. Through the first instant hot module, the water purifier can initially heat the purified water to a preset insulation temperature and store it in a constant temperature water tank. The temperature control part adjusts the proportion of hot water and normal temperature water mixed in the mixing part according to the outlet water temperature required by the user, so as to quickly achieve water outlets of different temperatures to meet diverse water needs. Compared with the prior art, the present invention has a fast heating speed and accurate outlet water temperature, and can also ensure a large flow of hot water, which is more convenient to use and reduces the waiting time for hot water.

[0038] (2) The present invention is provided with a filtering section and a heating and water purification section. The raw water is filtered through the filtering section to obtain purified water. The purified water enters the heating and water purification section and is first heated to a preset insulation temperature of 70 to 90°C by a first instant heating module. When the outlet water temperature required by the user is greater than the preset insulation temperature, the hot water flowing out of the constant temperature water tank will be instantly heated to the outlet water temperature by a second instant heating module. Because the heating at the time of outlet water is to reheat the hot water with a certain temperature, the heating speed is very fast. This solves the problem that the temperature in the existing hot tank rapid heating technology needs to be maintained at a very high temperature to meet the rapid hot water demand, avoids the occurrence of thousands of boiling water, and solves the problem of small flow rate of instant heating.

[0039] (3) The present invention is provided with a mixing section, including a plurality of mixing spray groups distributed in a linear array along the vertical direction, and the mixing spray groups include: a hot water spray pipe connected to the hot water outlet pipe, and a normal temperature water spray pipe connected to the normal temperature water outlet pipe; a plurality of spray holes are opened on the surface of the hot water spray pipe and the normal temperature water spray pipe, and the spray holes on the hot water spray pipe are arranged obliquely downward, and the spray holes on the normal temperature water spray pipe are arranged obliquely upward. During mixing, the hot water in each mixing spray group is radially sprayed downward, and the normal temperature water is radially sprayed upward. The hot water and normal temperature water of adjacent layers collide in the mixing chamber to form convection, increase the heat exchange space, and promote the mixing effect. Compared with the hot water and cold water mixing in the prior art, the hotter water rises and the colder water falls, forming a convection cycle until the entire water body reaches a uniform temperature. The present invention can quickly achieve water mixing, so that the outlet water temperature is uniform and fast.

[0040] (4) The present invention provides a mixing chamber including: an upper mixing section and a lower confluence section; the mixing injection group is arranged in the mixing section, and the mixing section is in the shape of a semi-cylinder; the confluence section gradually decreases from top to bottom, and is arranged at an angle to the lower back of the mixing injection group, and a plurality of guide grooves are arranged on the surface of the confluence section, and the distance between the plurality of guide grooves gradually decreases from top to bottom, and the lower ends of the plurality of guide grooves are connected to the drain port, so as to reduce the risk of hot water and normal temperature water being sprayed onto the inner wall of the mixing chamber and directly flowing down to cause water with different flow rates to appear at the bottom of the mixing chamber, thereby forming a vortex, thereby avoiding the vortex phenomenon that occurs during mixing inside the mixing chamber, which will generate additional friction and resistance inside the mixer, resulting in an increase in the overall pressure loss of the system and a decrease in the water outlet rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] 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 are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 is a schematic structural diagram of an instant hot water purifier according to a preferred embodiment of the present invention;

[0043] Figure 2 is a schematic diagram of the internal structure of the mixing unit of a preferred embodiment of the present invention;

[0044] Figure 3 It is a flow chart of a control method of an instant water purifier according to a preferred embodiment of the present invention.

[0045] In the figure: 100, filtering part; 110, raw water inlet; 120, filter element assembly; 130, purified water outlet; 140, three-way pipe; 200, heating and purifying water part; 210, first instant heating module; 220, constant temperature water tank; 230, hot water outlet pipe; 300, normal temperature water purifying part; 310, normal temperature water outlet pipe; 320, insulation layer; 400, temperature control part; 410, first flow valve; 420, second flow valve; 430, temperature matching module; 500, mixing part; 510, mixing chamber; 511, mixing section; 512, confluence section; 513, guide groove; 520, mixing injection group; 521, hot water injection pipe; 522, normal temperature water injection pipe; 523, injection hole; 530, drain outlet. DETAILED DESCRIPTION

[0046] 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.

[0047] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0048] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", 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 application 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 scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, "multiple" means two or more.

[0049] In the description of this application, 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0050] like Figure 1 As shown, the present invention provides an instant water purifier, including a water purifier housing; a filtering part 100, a heating water purification part 200, a normal temperature water purification part 300, a temperature control part 400 and a mixing part 500 are sequentially arranged in the water purifier housing.

[0051] The filter unit 100 includes: a raw water inlet 110, a filter element assembly 120 and a purified water outlet 130 arranged in sequence from top to bottom; the raw water inlet 110 is connected to an external tap water source, and tap water enters the filter element assembly 120 through the raw water inlet 110. After being filtered by the filter element assembly 120, suspended matter, sand, bacteria, lead, mercury, chlorine and other harmful substances in the tap water are removed to improve the water quality and taste. The purified water outlet 130 is arranged at the water outlet end of the filter element assembly 120 and is connected to a three-way pipe 140. The other end of the three-way pipe 140 is respectively connected to the heating water purification unit 200 and the normal temperature water purification unit 300, and the purified water source is supplied to the heating water purification unit 200 and the normal temperature water purification unit 300 at the same time.

[0052] The heating and purifying water part 200 includes: a first instant heating module 210 connected to the three-way pipe 140, a constant temperature water tank 220 arranged at the other end of the first instant heating module 210, and a hot water outlet pipe 230 arranged on one side of the constant temperature water tank 220. After the purified water is initially heated to a preset insulation temperature by the first instant heating module 210, it is stored in the constant temperature water tank 220. The preset insulation temperature of the first instant heating module 210 is 70-90°C, and the temperature of the constant temperature water tank 220 is set to 70-90°C. The preset insulation temperature is lower than the boiling point of water, that is, the first instant heating module 210 heats the purified water passing through to a higher temperature but not boiling, and then stores it in the constant temperature water tank 220. This structural design can ensure that the heating and purifying water part 200 always retains a portion of hot water, and the hot water is not boiling water, so there will be no problem of thousands of boiling water. The other end of the hot water outlet pipe 230 is connected to the mixing part 500.

[0053] The constant temperature water tank 220 in this embodiment includes: a box body, a temperature monitoring unit and a heating unit; wherein the box body is composed of a three-layer structure, namely an inner layer, a heat-insulating medium layer and an outer layer. The inner layer uses a food-grade stainless steel plate, preferably SUS304 material, which has good corrosion resistance and sanitation. The heat-insulating medium layer is a key part to achieve the heat-insulating function. It uses 10mm-20mm thick polyurethane foam, polystyrene or PEF and other materials. These materials have low thermal conductivity and can effectively prevent heat loss, thereby achieving the effect of heat preservation. The outer layer uses ordinary stainless steel plates, such as SUS304 or SUS201 stainless steel, which play a protective and supporting role. The temperature monitoring unit is used to monitor the purified water temperature in the box body. When the temperature is lower than the set insulation temperature, a signal is sent to the heating unit to heat the purified water in the box body to the set insulation temperature, and it cannot be overheated. The heating unit is a heating wire set on the inner layer, etc., which can achieve electric heating, and the present invention does not limit this.

[0054] The normal temperature water purification unit 300 includes: a normal temperature water outlet pipe 310 for connecting the three-way pipe 140 and the mixing unit 500, and a heat preservation layer 320 covering the outer surface of the normal temperature water outlet pipe 310; the normal temperature water outlet pipe 310 can use an ordinary water pipe. It is worth noting that the heat preservation layer 320 is a polyurethane foam or polystyrene material with a thickness of 8-10 mm, which reduces the influence of the normal temperature water outlet pipe 310 on the external environment temperature, such as the freezing problem of the normal temperature water outlet pipe 310 caused by the cold winter.

[0055] The temperature control unit 400 includes: a first flow valve 410 disposed on the hot water outlet pipe 230, a second flow valve 420 disposed on the normal temperature water outlet pipe 310, and a temperature matching module 430. The temperature matching module 430 is preset with a plurality of outlet water temperatures, each outlet water temperature allocates an outlet water ratio for the first flow valve 410 and the second flow valve 420, and controls the outlet water flow of the hot water outlet pipe 230 and the normal temperature water outlet pipe 310 to the mixing unit 500. The temperature control unit 400 also includes a water temperature monitoring module, which is disposed in the hot water outlet pipe 230 and the normal temperature water outlet pipe 310 and is used to monitor the purified water temperature therein.

[0056] like Figure 2 As shown, the mixing section 500 includes: a mixing chamber 510, a plurality of mixing injection groups 520 arranged in the mixing chamber 510, and a drain outlet 530 arranged at the lower part of the mixing chamber 510; the plurality of mixing injection groups 520 are distributed in a linear array along the vertical direction, and the mixing injection groups 520 include: a hot water injection pipe 521 connected to the hot water outlet pipe 230, and a normal temperature water injection pipe 522 connected to the normal temperature water outlet pipe 310.

[0057] A plurality of injection holes 523 are provided on the surfaces of the hot water injection pipe 521 and the normal temperature water injection pipe 522. The injection holes 523 on the hot water injection pipe 521 are tilted downward, and the injection holes 523 on the normal temperature water injection pipe 522 are tilted upward. The angle between the axes of the injection holes 523 on the same group of hot water injection pipes 521 and the normal temperature water injection pipe 522 is 45-60°.

[0058] In order to verify the mixing effect of the above-mentioned angle on hot and cold water, 6 groups of mixing section 500 samples are prepared, each of which has two groups of mixing injection groups 520. Eight injection holes 523 with a diameter of 4 mm are equidistantly provided on the surfaces of the hot water injection pipe 521 and the normal temperature water injection pipe 522. The injection holes 523 on the hot water injection pipe 521 are tilted downward, and the injection holes 523 on the normal temperature water injection pipe 522 are tilted upward. The angles between the axes of the injection holes 523 on the same group of hot water injection pipes 521 and the normal temperature water injection pipe 522 are 30°, 45°, 55°, 60°, 75° and 90°, respectively.

[0059] The hot water spray pipe 521 sprays 80°C hot water at a flow rate of 0.3 m / s, and the normal temperature water spray pipe 522 sprays 25°C normal temperature water at a flow rate of 0.3 m / s. Each mixing section 500 sample sprays for 1 minute. At the same time, a temperature sensor is set at the drain outlet 530 of the mixing section 500 to obtain the outlet water temperature every second, and the outlet water temperature fluctuation within one minute is obtained. The experimental results are shown in Table 1:

[0060] Table 1. Mixing section sample experiment

[0061]

[0062] It can be concluded from the above experimental results that for samples 2-4 of the mixing section 500, when the angle between the axis of the injection hole 523 on the same group of hot water injection pipes 521 and the normal temperature water injection pipe 522 is 45-62°, the temperature fluctuation range is the smallest within one minute, and the mixing effect is the best. However, the larger the angle of samples 5 and 6, the closer the junction of cold and hot water is to the injection hole 523, and the water droplets that impact and spread will destroy the shape of the ejected water column, reduce the impact effect between the normal temperature water column and the hot water column, and the mixing effect of cold and hot water is not good. The smaller the angle of sample 1, the longer the length of the normal temperature water column and the hot water column in the mixing chamber 510 will be. Not only does it need to increase the size of the mixing chamber 510, but it also needs to increase the water pressure to prevent the water column from bending. After bending, the impact force between the normal temperature water column and the hot water column becomes smaller, and the mixing effect of cold and hot water is not good.

[0063] The present invention provides an instant hot water purifier, which is provided with a filter part 100, a heating water purification part 200, a normal temperature water purification part 300, a temperature control part 400 and a mixing part 500. Through the first instant hot module 210, the water purifier can initially heat the purified water to a preset insulation temperature and store it in a constant temperature water tank 220. The temperature control part 400 adjusts the proportion of hot water and normal temperature water mixed in the mixing part 500 according to the outlet water temperature required by the user, so as to quickly achieve outlet water of different temperatures and meet the diversified water demand. Compared with the prior art, the present invention has a fast heating speed and accurate outlet water temperature, and can also ensure a large flow of hot water, which is more convenient to use and reduces the waiting time for hot water.

[0064] The filter element assembly 120 in this embodiment includes: PP cotton, compressed activated carbon, high-precision PP cotton, RO reverse osmosis membrane and post-activated carbon stacked from the outside to the inside. Among them, PP cotton is used to intercept large particles in the water, such as mud, rust, etc. Compressed activated carbon, located after the PP cotton, is used to adsorb chlorine, odor, organic matter and partially dissolved chemicals in the water. High-precision PP cotton further filters fine particles that may pass through the compressed activated carbon to ensure the clarity of the water. RO reverse osmosis membrane, as the core filter element, can remove bacteria, viruses, heavy metal ions and most dissolved solids in the water. Post-activated carbon, after the RO reverse osmosis membrane, is used to adsorb possible odors again and improve the taste of the water.

[0065] In this embodiment, a second instant heating module is also provided in the hot water outlet pipe 230, which reheats the hot purified water from the constant temperature water tank 220 according to the temperature set by the user to ensure that the hot water temperature meets the immediate needs of the user; the first instant heating module 210 and the second instant heating module are both thick film heating bodies. The thick film heating technology has the advantages of high heating efficiency, fast response speed, precise temperature control, etc. It is a prior art and will not be elaborated here.

[0066] The hot water spray pipe 521 and the normal temperature water spray pipe 522 in this embodiment are both semicircular, and one side of the straight edge of the hot water spray pipe 521 and the normal temperature water spray pipe 522 is fixedly connected to the inner wall of the mixing chamber 510 to reduce space occupation. The plurality of spray holes 523 on the surface of the hot water spray pipe 521 and the normal temperature water spray pipe 522 are evenly distributed, and the cold and hot water are sprayed and mixed from multiple angles and multiple spray holes 523 at the same time, achieving higher efficiency and reducing user waiting time.

[0067] The present invention is provided with a filter section 100 and a heating and water purification section 200. The raw water is filtered through the filter section 100 to obtain purified water. The purified water enters the heating and water purification section 200 and is first heated to a preset insulation temperature of 70 to 90°C by a first instant heating module 210. When the outlet water temperature required by the user is greater than the preset insulation temperature, the hot water flowing out of the constant temperature water tank will be instantly heated to the outlet water temperature by the second instant heating module. Because the heating when the water is discharged is to reheat the hot water with a certain temperature, the heating speed is very fast, which not only solves the problem that the temperature in the existing hot tank rapid heating technology needs to be maintained at a very high temperature to meet the rapid hot water demand, but also avoids the occurrence of thousands of boiling water, and at the same time solves the problem of small flow rate of instant heating.

[0068] The mixing chamber 510 in this embodiment includes: an upper mixing section 511 and a lower confluence section 512; the mixing injection group 520 is arranged in the mixing section 511, and the shape of the mixing section 511 is semi-cylindrical, which is compatible with the appearance of the mixing injection group 520, which not only reduces the space occupancy, but also is conducive to the structural reduction of the instant water purifier, and also makes the distance between the normal temperature water and hot water injected from various positions of the mixing injection group 520 and the inner wall of the mixing section 511 equal, so the mixed water impacts the inner wall of the mixing section 511, and the fluid movement of the fluid flowing down the wall remains consistent, thereby achieving the consistency of the hot and cold water mixing effect at various positions of the mixing injection group 520.

[0069] The confluence section 512 in this embodiment gradually shrinks from top to bottom and is inclined to the lower back side of the mixing injection group 520. A plurality of guide grooves 513 are provided on the surface of the confluence section 512. The distance between the plurality of guide grooves 513 gradually shrinks from top to bottom, and the lower ends of the plurality of guide grooves 513 are connected to the drain outlet 530.

[0070] The present invention provides a mixing chamber 510 including: an upper mixing section 511 and a lower confluence section 512; a mixing injection group 520 is arranged in the mixing section 511, and the shape of the mixing section 511 is semi-cylindrical; the confluence section 512 gradually decreases from top to bottom, and is arranged at an angle to the lower back side of the mixing injection group 520, and a plurality of guide grooves 513 are arranged on the surface of the confluence section 512, and the distance between the plurality of guide grooves 513 gradually decreases from top to bottom, and the lower ends of the plurality of guide grooves 513 are connected to the drain port 530, so as to reduce the risk of hot water and normal temperature water being sprayed onto the inner wall of the mixing chamber 510 and directly flowing down to cause water with different flow rates to appear at the bottom of the mixing chamber 510, thereby forming a vortex, thereby avoiding the vortex phenomenon occurring during mixing inside the mixing chamber 510, which will generate additional friction and resistance inside the mixer, resulting in an increase in the overall pressure loss of the system and a decrease in the water outlet rate.

[0071] The present invention is provided with a mixing section 500, including a plurality of mixing spray groups 520 distributed in a linear array along the vertical direction, and the mixing spray group 520 includes: a hot water spray pipe 521 connected to the hot water outlet pipe 230, and a normal temperature water spray pipe 522 connected to the normal temperature water outlet pipe 310; the hot water spray pipe 521 and the normal temperature water spray pipe 522 are both provided with a plurality of spray holes 523 on the surface, the spray holes 523 on the hot water spray pipe 521 are arranged obliquely downward, and the spray holes 523 on the normal temperature water spray pipe 522 are arranged obliquely upward. During mixing, the hot water in each mixing spray group 520 is radially sprayed downward, and the normal temperature water is radially sprayed upward, and the hot water and normal temperature water of adjacent layers collide in the mixing chamber 510 to form convection, increase the heat exchange space, and promote the mixing effect. Compared with the mixing of hot water and normal temperature water in the prior art, the hotter water rises and the colder water falls, forming a convection cycle until the entire water body reaches a uniform temperature. The present invention can quickly achieve water mixing, so that the outlet water temperature is uniform and fast.

[0072] like Figure 3 As shown, the present invention also provides a control method for an instant water purifier, comprising the following steps:

[0073] S1. External raw water passes through the filter unit 100 and is filtered by the filter element assembly 120 to obtain purified water, which is then respectively directed to the heated water purification unit 200 and the normal temperature water purification unit 300.

[0074] S2. The purified water leading to the heating and purification water part 200 is heated to a preset insulation temperature of 70-90°C by the first instant heating module 210 and then stored in a constant temperature water tank 220. The constant temperature water tank 220 ensures that the water temperature inside it is 70-90°C.

[0075] S3. After the user sets the outlet water temperature, the temperature control unit 400 first detects the purified water temperature in the constant temperature water tank 220, and calculates the difference between the purified water temperature in the constant temperature water tank 220 and the outlet water temperature, and determines its working mode;

[0076] The temperature control unit 400 is set with several working modes:

[0077] When the difference between the purified water temperature and the outlet water temperature is greater than 0, the first flow valve 410 and the second flow valve 420 are opened at the same time, and the outlet water ratio of the first flow valve 410 is greater than the outlet water ratio of the second flow valve 420, that is, the hot water is more than the normal temperature water, and the temperature of the hot water is reduced to the outlet water temperature.

[0078] When the difference between the purified water temperature and the outlet water temperature = 0, the first flow valve 410 is opened, the second flow valve 420 is closed, and only hot water is discharged.

[0079] When the difference between the purified water temperature and the outlet water temperature is less than 0, the first flow valve 410 is opened, the second flow valve 420 is closed, the second instant heating module is started, and the heating temperature is set to the outlet water temperature. Only hot water is also output, but the second instant heating module is required to further heat the hot water to reach the outlet water temperature.

[0080] Furthermore, when the user needs water at room temperature, the first flow valve 410 is closed and the second flow valve 420 is opened to discharge only water at room temperature.

[0081] S4, hot water or normal temperature water or hot water and normal temperature water enter the mixing part 500, and are discharged through the drain port 530.

[0082] In step S4, when the difference between the purified water temperature and the outlet water temperature is greater than 0, the outlet water ratio of the first flow valve 410 and the second flow valve 420 is allocated according to the difference, so that the hot water and the normal temperature water are mixed to reach the outlet water temperature. hot , Normal water temperature T cold and outlet water temperature T desired , calculate the required hot water and room temperature water flow ratio: , because the water flow rate Q total is constant, according to Q ratio Calculate the hot water flow rate Q hot and normal temperature water flow Q cold : , ; Based on the calculated hot water flow Q hot and normal temperature water flow Q cold To control the opening of the first flow valve 410 and the second flow valve 420.

[0083] In the mixing unit 500 , the hot water outlet pipe delivers hot water to the hot water spray pipes 521 through the first flow valve 410 , and the normal temperature water outlet pipe delivers normal temperature water to the normal temperature water spray pipes 522 through the second flow valve 420 .

[0084] The hot water spray pipe 521 sprays hot water downward at an angle, and the normal temperature water spray pipe 522 sprays normal temperature water upward at an angle, forming several layers of hot water sprayed upward and several layers of normal temperature water sprayed downward in the mixing section 500, forming convection to promote mixing and reach the water outlet temperature.

[0085] The above is based on the ideal embodiment of the present invention. Through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. An instant water purifier, comprising a water purifier housing, characterized in that: The water purifier shell is provided with a filtering part, a heating water purification part, a normal temperature water purification part, a temperature control part and a mixing part in sequence; The filter part comprises: a raw water inlet, a filter element assembly and a purified water outlet arranged in sequence from top to bottom; the raw water inlet is connected to an external tap water source, the purified water outlet is arranged at the water outlet end of the filter element assembly and is connected to a three-way pipe, and the other end of the three-way pipe is respectively connected to the heating water purification part and the normal temperature water purification part; The heating and water purification part comprises: a first instant heating module connected to the three-way pipe, a constant temperature water tank arranged at the other end of the first instant heating module, and a hot water outlet pipe arranged at one side of the constant temperature water tank; after the purified water is initially heated to a preset insulation temperature by the first instant heating module, it is stored in the constant temperature water tank; the other end of the hot water outlet pipe is connected to the mixing part; The normal temperature water purification part comprises: a normal temperature water outlet pipe for connecting the three-way pipe and the mixing part, and a heat preservation layer covering the outer surface of the normal temperature water outlet pipe; The temperature control unit comprises: a first flow valve arranged on the hot water outlet pipe, a second flow valve arranged on the normal temperature water outlet pipe, and a temperature matching module; the temperature matching module is preset with a plurality of water outlet temperatures, and each water outlet temperature allocates a water outlet ratio for the first flow valve and the second flow valve; The mixing part comprises: a mixing chamber, a plurality of mixing injection groups arranged in the mixing chamber, and a drain port arranged at the lower part of the mixing chamber; the plurality of mixing injection groups are distributed in a linear array along the vertical direction, and the mixing injection groups comprise: a hot water injection pipe connected to the hot water outlet pipe, and a normal temperature water injection pipe connected to the normal temperature water outlet pipe; a plurality of injection holes are opened on the surfaces of the hot water injection pipe and the normal temperature water injection pipe, the injection holes on the hot water injection pipe are arranged obliquely downward, and the injection holes on the normal temperature water injection pipe are arranged obliquely upward; The mixing chamber comprises: an upper mixing section and a lower confluence section; The mixing injection group is arranged in the mixing section, and the shape of the mixing section is a semi-cylindrical shape; The confluence section gradually decreases from top to bottom and is arranged at an angle to the lower back side of the mixed injection group. A plurality of guide grooves are arranged on the inner surface of the confluence section. The distance between the plurality of guide grooves gradually decreases from top to bottom. The lower ends of the plurality of guide grooves are connected to the drain port. The angle between the axes of the hot water spray pipe and the spray holes on the normal temperature water spray pipe of the same mixed spray group is 45-60°.

2. The instant water purifier according to claim 1, characterized in that: The filter element assembly includes: PP cotton, compressed activated carbon, high-precision PP cotton, RO reverse osmosis membrane and post-activated carbon stacked from the outside to the inside.

3. The instant water purifier according to claim 1, characterized in that: The temperature control unit also includes a water temperature monitoring module, which is arranged in the hot water outlet pipe and the normal temperature water outlet pipe to monitor the purified water temperature therein.

4. The instant water purifier according to claim 1, characterized in that: A second instant heating module is also provided in the hot water outlet pipe to reheat the hot purified water from the constant temperature water tank according to the temperature set by the user; the first instant heating module and the second instant heating module are both thick film heating bodies.

5. The instant water purifier according to claim 1, characterized in that: The hot water spray pipe and the normal temperature water spray pipe are both semicircular, one side of the straight edge of the hot water spray pipe and the normal temperature water spray pipe is fixedly connected to the inner wall of the mixing chamber, and the multiple spray holes on the surface of the hot water spray pipe and the normal temperature water spray pipe are equidistantly distributed.

6. The instant water purifier according to claim 1, characterized in that: The preset insulation temperature of the first instant heating module is 70-100°C, and the temperature of the constant temperature water tank is set to 70-90°C.

7. A control method for an instant water purifier according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, the external raw water passes through the filter part, and the purified water is obtained by filtering the filter element assembly, and the purified water is respectively led to the heating water purification part and the normal temperature water purification part; S2, the purified water leading to the heating and purification part is heated to a preset insulation temperature by the first instant heating module and then stored in a constant temperature water tank; S3. After the user sets the outlet water temperature, the temperature control unit first detects the purified water temperature in the constant temperature water tank, and calculates the difference between the purified water temperature in the constant temperature water tank and the outlet water temperature to determine its working mode; The temperature control unit has several working modes: When the difference between the purified water temperature and the outlet water temperature is greater than 0, the first flow valve and the second flow valve are opened at the same time, and the outlet water ratio of the first flow valve is greater than the outlet water ratio of the second flow valve; When the difference between the purified water temperature and the outlet water temperature = 0, the first flow valve is opened and the second flow valve is closed; When the difference between the purified water temperature and the outlet water temperature is less than 0, the first flow valve is opened, the second flow valve is closed, the second instant heating module is started, and the heating temperature is set to the outlet water temperature; When the user needs water at normal temperature, the first flow valve is closed and the second flow valve is opened; S4. Hot water and / or normal temperature water enters the mixing section, passes through the drain port and flows out.

8. The control method of the instant water purifier according to claim 7, characterized in that: In S4, when the difference value is greater than 0, the water outlet ratio of the first flow valve and the second flow valve is allocated according to the difference value, so that the hot water and the normal temperature water are mixed to reach the water outlet temperature; In the mixing section, the hot water outlet pipe delivers hot water to a plurality of hot water injection pipes through a first flow valve, and the normal temperature water outlet pipe delivers normal temperature water to a plurality of normal temperature water injection pipes through a second flow valve; The hot water injection pipe sprays hot water downward at an angle, and the normal temperature water injection pipe sprays normal temperature water upward at an angle, forming several layers of hot water spraying upward and several layers of normal temperature water spraying downward in the mixing section, forming convection to promote mixing and reach the water outlet temperature.

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