CN203628998U - Water storage type electric water heater - Google Patents

Abstract

The utility model discloses a water storage type electric water heater, which comprises an inner tank, a water inlet pipe and a water outlet pipe assembly, the water outlet pipe assembly includes a water outlet pipe, a quick heating heating pipe and a sleeve, the water outlet pipe and the quick heating The heating pipe is installed in the sleeve, and the outer peripheral wall of the sleeve is provided with a heat insulation layer. The outer wall of the sleeve of the water outlet pipe assembly is provided with a heat insulating layer to block the heat exchange between the hot water in the water outlet pipe assembly and the cold water in the inner tank, so that the heat exchange efficiency of the rapid heating heating tube can be improved and The output rate of hot water is high to achieve the purpose of saving energy. In addition, the heat insulation layer has a simple structure, convenient assembly, and low cost of manufacturing materials, so that the production efficiency can be improved and the production cost can be reduced.

Description

storage type electric water heater

technical field

The utility model relates to the technical field of electric water heaters, in particular to a storage-type electric water heater with a quick-heating function of a water outlet pipe.

Background technique

In the prior art, the storage-type electric water heater needs to heat the water in the inner tank to a preset temperature before it can be used, resulting in an excessively long heating time. In order to solve the problem of inconvenient use due to too long heating time, the existing water storage electric water heater adds a quick-heating heating tube to the outlet pipe to reheat the hot water in the outlet pipe, which realizes to a certain extent Rapid heating increases the hot water output rate.

The quick-heat heating tube is set at the water outlet pipe, and a sleeve is used to seal the quick-heat heating tube and the water outlet pipe. The hot water in the upper layer of the inner tank flows into the sleeve, and flows out of the water outlet pipe after being heated by the quick-heat heating tube. Therefore, concentrated heating of the hot water to be flowed out can be realized, thereby shortening the heating time. But when this kind of water storage type electric water heater is in use, cold water flows into the inner tank from the bottom of the inner tank through the water inlet pipe. Since the density of cold water is higher than that of hot water, the cold water will sink in the bottom area of the inner tank. The sleeve used to seal the quick-heating heating tube and the outlet pipe is made of metal material, and has good thermal conductivity. When the hot water in the sleeve and the outlet pipe passes through the bottom of the quick-heating heating tube, it will pass through the sleeve and the inner tank The cold water is used for heat exchange, thereby reducing the temperature of the hot water, resulting in a decrease in the heat exchange efficiency of the quick-heating heating tube, and limiting the hot water output rate of the storage-type electric water heater.

Utility model content

The main purpose of the utility model is to provide a water storage type electric water heater, which aims at making the output hot water achieve rapid heating effect, improving the heat exchange efficiency of the rapid heating heating tube and the output rate of hot water, thereby saving energy.

In order to achieve the above purpose, the utility model proposes a water storage electric water heater, which includes an inner container, a water inlet pipe and an outlet pipe assembly, the outlet pipe assembly includes an outlet pipe, a quick-heating heating pipe and a sleeve, the outlet pipe and The rapid heating heating pipe is installed in the sleeve, and the outer peripheral wall of the sleeve is provided with a heat insulation layer.

Preferably, the heat-insulating layer is a heat-shrinkable tube or a silicone sleeve sheathed on the sleeve, and the heat-insulating layer is closely attached to the outer peripheral wall of the sleeve.

Preferably, the outer peripheral wall of the heat insulation layer is covered with metal foil.

Preferably, the metal foil is aluminum foil.

Preferably, the sleeve is provided with a hollow layer, and the hollow layer is filled with a foam material for thermal insulation.

Preferably, the foaming material is polyurethane foaming material or polypropylene plastic foaming material.

Preferably, the sleeve is a double-layer metal vacuum tube.

Preferably, the inner wall of the sleeve is coated with thermal insulation paint to form a thermal insulation coating.

Preferably, the thickness of the heat insulation layer is 2-5mm.

The water storage type electric water heater provided by the utility model is provided with a heat insulation layer on the outer wall of the sleeve of the water outlet pipe assembly, so as to block the exchange between the hot water in the water outlet pipe assembly and the cold water in the inner tank. Therefore, the heat exchange efficiency and hot water output rate of the rapid heating heating tube can be improved to achieve the purpose of saving energy. In addition, this kind of heat insulation layer has a simple structure, convenient assembly, and low cost of production materials, so it can improve production efficiency and reduce Cost of production.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of a storage-type electric water heater of the present invention;

Fig. 2 is a schematic structural view of the outlet pipe assembly shown in Fig. 1;

Fig. 3 is a structural schematic view of the water outlet pipe assembly shown in Fig. 1 equipped with a heat insulating layer.

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Referring to Fig. 1, Fig. 2 and Fig. 3, Fig. 1 is a schematic structural view of an embodiment of a storage-type electric water heater of the present invention; Fig. 2 is a schematic structural view of the outlet pipe assembly shown in Fig. 1; Schematic diagram of the structure of the outlet pipe assembly with insulation shown in .

The water storage type electric water heater provided in this embodiment includes an inner container 10, a water inlet pipe 11 and an outlet pipe assembly 12. Both the water inlet pipe 11 and the outlet pipe assembly 12 are arranged at the bottom of the inner container 10, and the water inlet pipe 11 is close to the inner container 10. The lower portion of the bottom is provided with a number of water outlet holes distributed along the periphery of the water inlet pipe 11 , and the upper end of the water outlet pipe assembly 12 extends to the top of the inner container 10 . The water outlet pipe assembly 12 comprises a water outlet pipe 121, a quick heating heating pipe 122 and a sleeve 123, the water outlet pipe 121 and the quick heating heating pipe 122 are all installed in the sleeve 123, and the quick heating heating pipe 122 is used for connecting the water outlet pipe 121 and the The hot water to be flowed out in the sleeve 123 is reheated to realize rapid heating of the output hot water and increase the hot water output rate. However, when the water storage type electric water heater is working, cold water flows into the inner tank 10 through the outlet hole of the water inlet pipe 11. Since the density of the cold water is higher than that of the hot water, the cold water will sink to the bottom of the inner tank 10, and then As the cold water flowing into the inner tank 10 continues to increase, the cold water at the bottom of the inner tank 10 is gradually lifted, thereby forming a stable layer of cold and hot water in the inner tank 10 . The temperature difference between the part of the water outlet pipe assembly 12 located in the cold water layer and the cold water (it can be understood that the cold water referred to here is relative to the hot water to be output, and the temperature may reach 40-50 ° C, or even higher) is relatively small. Large, so the hot water to be output will exchange heat with the cold water in the inner tank 10 through the sleeve 123, thereby reducing the temperature of the hot water, resulting in a decrease in the heat exchange efficiency of the quick-heating heating tube 122, which greatly reduces the energy utilization rate and Hot water output rate. In order to achieve the rapid heating effect of the hot water to be output, the outer peripheral wall of the sleeve 123 is provided with a heat insulating layer 20, and the heat insulating layer 20 is made of a heat insulating material with a small thermal conductivity, high temperature resistance and aging resistance, which acts as a barrier The hot water in the water outlet pipe assembly 12 exchanges heat with the cold water in the inner tank 10, thereby improving the heat exchange efficiency and hot water output rate of the rapid heating heating pipe 122, and simultaneously achieving the purpose of saving energy.

In this embodiment, the sleeve 123 is a metal round tube, and the heat insulation layer 20 is a heat shrinkable tube or a silicone sleeve sleeved on the sleeve 123 . The heat-shrinkable tube or the silicone sleeve is in close contact with the outer peripheral wall of the sleeve 123, so as to play a better heat insulation effect. The heat-shrinkable tube has the characteristic of heat shrinkage, so the heat-shrinkable tube whose inner diameter is slightly larger than the outer diameter of the sleeve 123 can be sleeved on the sleeve 123, and then the heat-shrinkable tube is heated to a preset temperature (for example, 70-90°C ), at this time, the heat-shrinkable tube shrinks to be locked on the sleeve 123, the production process is simple, the cost is low, a good heat insulation effect can be achieved, and the hot water output rate is obviously improved. For the silicone sleeve, because of its good elasticity and thermal stability, a silicone sleeve with an inner diameter slightly smaller than the outer diameter of the sleeve 123 can be placed on the sleeve 123, and the silicone sleeve can be firmly locked on the sleeve 123 by the elastic force of the silicone sleeve itself. Additional fasteners or connection structures are fixed, and the production process is simple and the cost is low, which can achieve good heat insulation effect and significantly increase the hot water output rate. It can be understood that, with reference to the above description, in other embodiments of the present invention, any other suitable heat insulating material in a tubular shape can also be used as the heat insulating layer 20 , which will not be repeated here.

It is worth mentioning that the thickness of the heat-shrinkable tube and the silicone sleeve can be determined according to actual needs, so as to ensure that the heat-shrinkable tube and the silicone sleeve can achieve a suitable heat insulation effect, improve the hot water output rate and save energy. For example, in this embodiment, the thickness of the heat-shrinkable tube and the silicone sleeve is preferably 2-5 mm, so as to reduce production costs on the premise of ensuring that they meet heat insulation requirements. Certainly, in other embodiments of the present utility model, the heat-shrinkable tube and the silicone sleeve can also be of other suitable thicknesses, which will not be repeated here.

In this embodiment, in order to extend the service life of the heat insulation layer 20 and ensure the heat insulation performance of the heat insulation layer 20, the outer peripheral wall of the heat insulation layer 20 is covered with metal foil (not shown in the figure), so that the heat insulation layer 20 surrounding seals.

Further, in order to reduce the production cost and simplify the production process, the metal foil in the above embodiment is preferably aluminum foil. In addition, the aluminum foil also has the characteristics of excellent corrosion resistance and heat resistance, which meets the use requirements of high temperature environments, and can be used in combination with the heat insulation layer 20 to achieve a more excellent heat insulation effect. It can be understood that, in other embodiments of the present invention, the aluminum foil can also be replaced by any other suitable materials, such as composite aluminum foil, copper foil, etc., which will not be repeated here.

In this embodiment, in order to further reduce the heat exchange efficiency between the hot water in the outlet pipe assembly 12 and the cold water in the cold water layer, and ensure the hot water output rate of the outlet pipe assembly 12, the sleeve 123 is provided with a hollow layer (not shown in the figure). Out), and the hollow layer is filled with foam material for thermal insulation. The foaming material is preferably polyurethane foaming material or polypropylene plastic foaming material, which has strong temperature resistance and good thermal insulation performance, delays the heat exchange rate between hot water and cold water, and effectively ensures the hot water output rate.

In this embodiment, the sleeve 123 can also be a double-layer metal vacuum tube. Under the joint action of the heat insulation layer 20, the hot water in the outlet pipe assembly 12 can achieve a better heat insulation effect, and reduce the heat to a greater extent. lost heat.

It is worth mentioning that, on the basis of the above embodiments, in order to further improve the thermal insulation capability of the sleeve 123, the inner wall of the sleeve 123 is coated with thermal insulation paint to form a thermal insulation coating. The main components of the thermal insulation coating are nano hollow ceramic microspheres and an inorganic polymer solution, of course, it can also be a mixed slurry containing any other suitable components. Therefore, radiant heat and heat conduction can be effectively suppressed and shielded, and the heat insulation suppression efficiency is high, heat radiation and heat loss of hot water in the water outlet pipe assembly 12 can be suppressed, and the output rate of hot water can be ensured.

It should be understood that the above are only preferred embodiments of the present utility model, and cannot therefore limit the patent scope of the present utility model. Any equivalent structure or equivalent flow conversion made by using the utility model specification and accompanying drawings, or directly or Indirect applications in other related technical fields are all included in the scope of patent protection of the utility model in the same way.

Claims (9)

1. a storage-type electric water heater, comprise inner bag, water inlet pipe and outlet pipe component, described outlet pipe component comprises outlet pipe, fast hot heating tube and sleeve, described outlet pipe and the hot heating tube of described speed are installed in described sleeve, it is characterized in that: the periphery wall of described sleeve is provided with thermal insulation layer.

2. storage-type electric water heater according to claim 1, is characterized in that: described thermal insulation layer is heat-shrinkable tube or the silica gel sheath that is sheathed on described sleeve, and described thermal insulation layer is close to the periphery wall of described sleeve.

3. storage-type electric water heater according to claim 2, is characterized in that: the periphery wall of described thermal insulation layer is coated with metal forming.

4. storage-type electric water heater according to claim 3, is characterized in that: described metal forming is aluminium foil.

5. storage-type electric water heater according to claim 1, is characterized in that: described sleeve is provided with hollow layer, and described hollow layer is filled with the expanded material for insulation.

6. storage-type electric water heater according to claim 5, is characterized in that: described expanded material is polyurethane foam material or polypropylene plastics expanded material.

7. storage-type electric water heater according to claim 1, is characterized in that: described sleeve is double-level-metal vacuum tube.

8. according to the storage-type electric water heater described in any one in claim 1 to 7, it is characterized in that: the inwall of described sleeve is coated with thermal insulation coatings, to form heat insulation coating.

9. according to the storage-type electric water heater described in any one in claim 1 to 7, it is characterized in that: the thickness of described thermal insulation layer is 2～5mm.

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