Internal heating type balcony solar water heater

Abstract

The utility model relates to the technical field of solar water heaters, in particular to an internal heating type balcony solar water heater which comprises a heat collection device and a water tank, the water tank comprises a shell and an inner cavity, a heat preservation layer is arranged between the shell and the inner cavity, a partition plate is arranged on the lower portion of the inner cavity in a sealed mode, and the inner cavity on the upper side and the lower side of the partition plate is provided with a water storage chamber and a heat exchange bin respectively. A water inlet pipe and a water outlet pipe leading to the water storage chamber are arranged at the top of the shell, a liquid inlet pipe and a liquid outlet pipe leading to the heat exchange bin are arranged at the bottom of the shell, and the liquid inlet pipe and the liquid outlet pipe communicate with a liquid outlet port and a liquid inlet port of the heat collection device correspondingly; the heating structure is arranged at the bottom of the inner cavity of the water tank, and the water inlet of the water inlet pipe extends to the upper side of the partition plate, so that newly added cold water can be heated at the first time; the partition plates are thin steel plates, and compared with large-thickness tank walls of the water tank, heat resistance can be effectively reduced, and the heat transfer effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to solar water heater technical field especially relates to a kind of inner heating type balcony solar water heater. BACKGROUND

[0002] Balcony solar water heater is a kind of domestic equipment using solar energy or electric heating function to heat up cold water and store, usually adopts split structure, including heat collecting device and water storage tank, heat collecting device (mostly flat plate collector) is installed to balcony exterior, water tank is installed to balcony inner wall, heat collecting device is connected with water tank between pipeline and is passed into heat exchange medium (mostly freeze-proof fluid, to guarantee winter use demand), constitute complete hot water supply system.

[0003] The water tank of balcony type solar water heater on the market currently adopts jacket structure, i. e. installing jacket on the outer periphery of water tank, forming sealed heat exchange cavity between water tank and jacket, to supply heat exchange medium circulation and heat release. The structure needs to heat the tank wall of water tank from outside as a whole, and the thickness of tank wall is relatively thick (usually 2.0mm), so the heat transfer effect is poor, and the heating time is long. In addition, the hot water inlet and outlet of water tank are on the lower side of water tank, which is not beautiful and occupies storage space. SUMMARY

[0004] The utility model solves the technical problem in the prior art, and provides an inner heating type balcony solar water heater which can effectively shorten heating time and is beautiful and does not occupy storage space.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] An inner heating type balcony solar water heater includes a heat collecting device and a water tank, characterized in that: the water tank includes an outer shell and an inner cavity, a thermal insulation layer is arranged between the outer shell and the inner cavity, a partition plate is sealingly arranged at the lower part of the inner cavity, the inner cavity on the upper and lower sides of the partition plate is respectively arranged as a water storage chamber and a heat exchange bin, a water inlet pipe and a water outlet pipe are arranged on the top of the outer shell and lead to the water storage chamber, a liquid inlet pipe and a liquid outlet pipe are arranged on the bottom of the outer shell and lead to the heat exchange bin, and the liquid inlet pipe and the liquid outlet pipe are respectively communicated with the liquid outlet port and the liquid inlet port of the heat collecting device; a part of the partition plate is upwardly protruded to form a protruding part, a section of the heat exchange bin located in the protruding part is arranged as an expansion buffer section of heat exchange medium, an exhaust pipe is arranged on the bottom of the outer shell and leads to the expansion buffer section, and the upper end of the exhaust pipe is arranged in the expansion buffer section.

[0007] The lower end of the water inlet pipe is arranged at the bottom of the water storage chamber, and the lower end of the water outlet pipe is arranged at the top of the water storage chamber.

[0008] The technical problems solved by the utility model further can be further realized through the following steps, the volume of the expansion buffer section accounts for 15% to 25% of the total volume of the heat exchange bin.

[0009] The technical problems solved by the utility model further can be further realized through the following steps, the water inlet pipe is equipped with a water inlet valve, the water outlet pipe is equipped with a water outlet valve, the liquid inlet pipe is equipped with a liquid inlet valve, the liquid outlet pipe is equipped with a liquid outlet valve, and the exhaust pipe is equipped with an exhaust valve.

[0010] The technical problems solved by the utility model further can be further realized through the following steps, the water storage chamber is fixedly installed with an electric heating device connected with an external power supply.

[0011] The technical problems solved by the utility model further can be further realized through the following steps, the electric heating device is an electric heating pipe, and the heat collecting device is a flat plate heat collector.

[0012] The technical problems solved by the utility model further can be further realized through the following steps, the thickness of the baffle is 0.4 to 0.8 mm.

[0013] The technical problems solved by the utility model further can be further realized through the following steps, the protruding part of the baffle is arranged in the middle part of the baffle.

[0014] The technical problems solved by the utility model further can be further realized through the following steps, the volume of the heat exchange bin accounts for 7% to 12% of the total volume of the inner cavity of the water tank.

[0015] The technical problems solved by the utility model further can be further realized through the following steps, the water tank is a vertical water tank or a horizontal water tank.

[0016] Compared with the prior art, the utility model has the advantages that the heating structure is arranged at the inner cavity bottom of the water tank, and the water inlet of the water inlet pipe extends to the upper side of the baffle, so that the newly added cold water can be heated and warmed in the first time; the baffle is made of a thin steel plate, so that the thermal resistance can be effectively reduced and the heat transfer effect can be improved compared with the large thickness tank wall of the water tank; the protruding part of the baffle can not only increase the heat exchange area, but also serve as the outer wall of the expansion buffer section, so that the expansion space of the heat exchange medium after being heated is ensured, and the overall reliability is improved; the water inlet pipe and the water outlet pipe are arranged at the top of the water tank, so that the appearance is beautiful, the storage space is not occupied, and the user experience is effectively improved. ACCURACY

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] In the figure: 1 - inner cavity; 2 - water inlet pipe; 3 - water inlet extension pipe; 4 - water outlet pipe; 5 - heat preservation layer; 6 - electric heating pipe; 7 - heat exchange bin; 8 - expansion buffer section; 9 - liquid outlet pipe; 10 - liquid inlet pipe; 11 - exhaust pipe; 12 - shell; 13 - heat collecting device; 14 - water storage chamber; 16 - protruding part. DETAILED DESCRIPTION

[0019] The specific technical solutions of the utility model are further described below so as to be further understood by those skilled in the art without constituting a limitation on the rights thereof.

[0020] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0021] Please refer to Figure 1 A heat-from-inside type balcony solar water heater comprises a heat collecting device 13 and a water tank, the heat collecting device 13 is installed outside the balcony, and the water tank is installed on the inner wall of the balcony. The water tank can be a vertical water tank or a horizontal water tank. The water tank comprises a shell 12 and an inner cavity 1, and a heat preservation layer 5 is arranged between the shell 12 and the inner cavity 1. The lower part of the inner cavity 1 is sealed with a partition plate, and the inner cavity 1 on the upper and lower sides of the partition plate is respectively arranged as a water storage chamber 14 and a heat exchange bin 7, the water storage chamber 14 is used for storing domestic water, and the heat exchange bin 7 is used for circulating and heat exchanging a heat exchange medium (antifreeze in this embodiment). The top of the shell 12 is provided with a water inlet pipe 2 and a water outlet pipe 4 leading to the water storage chamber 14, and the bottom of the shell 12 is provided with a liquid inlet pipe 10 and a liquid outlet pipe 9 leading to the heat exchange bin 7, the liquid inlet pipe 10 and the liquid outlet pipe 9 are respectively communicated with the liquid outlet port and the liquid inlet port of the heat collecting device 13, forming a complete heat exchange system.

[0022] The protruding part 16 is formed by the local upward protrusion of the partition plate, and the heat exchange tank 7 in the protruding part 16 (i.e. the part of the heat exchange tank 7 between the top and bottom of the protruding part 16) is set as the expansion buffer section 8 of the heat exchange medium. When the heat exchange medium expands due to heating, the section can provide sufficient expansion space for the heat exchange medium, so as to avoid high pressure and damage to the system. The bottom of the shell 12 is provided with an exhaust pipe 11 leading to the expansion buffer section 8, and the upper end of the exhaust pipe 11 is arranged in the expansion buffer section 8, and the liquid level of the heat exchange medium is always lower than the upper end of the exhaust pipe 11. There is heat exchange medium and air in the heat exchange tank 7, and when the heat exchange medium expands due to heating, the air is pressed into the expansion buffer section 8, and at this time, the air can be discharged through the exhaust pipe 11, so as to ensure that the heat exchange medium has sufficient expansion space, and such arrangement can effectively improve the use reliability and safety of the water heater. Preferably, the volume of the expansion buffer section accounts for 15% to 25% of the total volume of the heat exchange tank, and in the embodiment, the volume is 20%.

[0023] The lower end of the water inlet pipe 2 is arranged at the bottom of the water storage chamber 14 and faces the partition plate, and the lower end of the water outlet pipe 4 is arranged at the top of the water storage chamber 14. The water inlet pipe 2 includes a water inlet upper pipe and a water inlet extension pipe 3 sleeved at the bottom of the water inlet upper pipe, and the bottom of the water inlet extension pipe 3 reaches the bottom of the water storage chamber 14 and faces the partition plate. Cold water enters the bottom of the water storage chamber 14 through the water inlet upper pipe and the water inlet extension pipe 3 in sequence, and hot water flows out through the upper end of the water outlet pipe 4. In this way, the water inlet and outlet are arranged at the upper part of the water tank, which is not only beautiful but also does not occupy storage space, and the water tank is operated by top water, so that more hot water can be discharged.

[0024] In order to further improve the use reliability and safety of the water heater, a water inlet valve is arranged on the water inlet pipe 2, a water outlet valve is arranged on the water outlet pipe 4, a liquid inlet valve is arranged on the liquid inlet pipe 10, a liquid outlet valve is arranged on the liquid outlet pipe 9, and an exhaust valve is arranged on the exhaust pipe 11.

[0025] In order to ensure that the user can obtain sufficient hot water supply in winter, an electric heating device connected with an external power source is fixedly installed in the water storage chamber 14. When the solar energy is insufficient or rapid heating is needed, the electric heating device can be used as an auxiliary heating source to ensure the stable supply of hot water. In the embodiment, the electric heating device is an electric heating pipe 6, and the heat collecting device 13 is a flat plate collector.

[0026] In order to ensure the durability and strength, and at the same time, consider the heat conduction performance, the material of the partition plate is preferably stainless steel, and the thickness of the partition plate is preferably 0.4-0.8 mm. In the embodiment, the partition plate is made of 304 stainless steel with a thickness of 0.5 mm. The protruding part 16 of the partition plate is arranged in the middle part of the partition plate. In this way, the heat exchange performance can be optimized, and it is ensured that the heat can be uniformly transmitted to the cold water in the water storage chamber 14.

[0027] In order to optimize the water tank structure, the water storage capacity of the water storage chamber 14 and the heat exchange performance of the heat exchange bin 7 are considered, the volume of the heat exchange bin 7 accounts for 7% to 12% of the total volume of the water tank inner cavity 1, and the volume ratio of the heat exchange bin in the embodiment is 8%.

[0028] Working principle: the utility model discloses an inner heating type balcony solar water heater, when using, the anti -icing fluid is sent to the heat collecting device 13 of outdoor through the liquid outlet pipe 9 and is heated, and then returns to the heat exchange bin 7 through the liquid return pipe, and the heat energy is transferred to the cold water in the water storage chamber 14 through the baffle. The baffle selects thin steel plate and is equipped with the convex part 16 of increasing heat exchange area, and the heat conduction performance is good, and cold water can be heated to the set temperature quickly. Cold water enters the bottom of the water storage chamber 14 through the water inlet pipe 2 and extrudes the heated hot water into the upper layer of the water storage chamber 14, and the water outlet pipe 4 arranged at the top of the water storage chamber 14 as the hot water outlet can effectively increase the hot water outlet flow. When the anti -icing fluid is heated and expands in the heat exchange bin 7, air can be discharged through the exhaust pipe 11, and the heat exchange medium has sufficient expansion space. In winter or the case of insufficient solar energy, the user can open the electric heating device as an auxiliary heating source, to ensure that the water temperature in the water storage chamber 14 can meet the use demand.

[0029] Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

Claims

1. An internally heated balcony solar water heater, comprising a heat collection device and a water tank, characterized in that: The water tank includes an outer shell and an inner cavity, with an insulation layer between them. The lower part of the inner cavity is sealed with a partition. The inner cavities on the upper and lower sides of the partition are respectively configured as a water storage chamber and a heat exchange chamber. The top of the outer shell has an inlet pipe and an outlet pipe leading to the water storage chamber, and the bottom of the outer shell has an inlet pipe and an outlet pipe leading to the heat exchange chamber. The inlet pipe and outlet pipe are respectively connected to the outlet port and inlet port of the heat collection device. A portion of the partition protrudes upward to form a raised section. The section of the heat exchange chamber located within the raised section is configured as an expansion buffer section for the heat exchange medium. The bottom of the outer shell has an exhaust pipe leading to the expansion buffer section, and the upper end of the exhaust pipe is located within the expansion buffer section.

2. The internal heating type balcony solar water heater according to claim 1, characterized in that: The lower end of the water inlet pipe is located at the bottom of the water storage chamber, and the lower end of the water outlet pipe is located at the top of the water storage chamber.

3. The internal heating type balcony solar water heater according to claim 1, characterized in that: The volume of the expansion buffer section accounts for 15% to 25% of the total volume of the heat exchange chamber.

4. The internal heating type balcony solar water heater according to claim 1, characterized in that: The inlet pipe is equipped with an inlet valve, the outlet pipe is equipped with an outlet valve, the liquid inlet pipe is equipped with an inlet valve, the liquid outlet pipe is equipped with an outlet valve, and the vent pipe is equipped with an vent valve.

5. The internal heating type balcony solar water heater according to claim 1, characterized in that: An electric heating device connected to an external power source is fixedly installed in the water storage chamber.

6. The internal heating type balcony solar water heater according to claim 3, characterized in that: The electric heating device is an electric heating tube, and the heat collection device is a flat plate heat collector.

7. The internal heating type balcony solar water heater according to claim 1, characterized in that: The thickness of the partition is 0.4 to 0.8 mm.

8. The internal heating type balcony solar water heater according to claim 1, characterized in that: The protrusion of the partition is located in the middle of the partition.

9. The internal heating type balcony solar water heater according to claim 1, characterized in that: The volume of the heat exchange chamber accounts for 7% to 12% of the total volume of the water tank cavity.

10. The internal heating type balcony solar water heater according to claim 1, characterized in that: The water tank can be a vertical or horizontal water tank.

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