CN207797415U - A kind of micro channel flat plate heat collector - Google Patents

Abstract

This utility model discloses a microchannel flat plate solar collector, including a frame, a transparent cover plate at the top of the frame, a sealant layer cast on the inner side of the transparent cover plate near the frame, a waterproof layer covering the outer side of the frame, and insulation layers on both the outer frame and the back of the frame. An absorber core is disposed inside the frame, and the absorber core includes a pipe array. One end of each pipe array is connected to a water inlet pipe, and the other end is connected to a water outlet pipe. The water outlet pipe is perpendicularly connected to the water inlet pipe, and the pipe array is integrally connected to both the water inlet and outlet pipes. Connecting plates are disposed on both sides of each pipe array, and the pipe array is connected by connecting plates, which are then connected by nuts. This utility model solves the problems of poor insulation, long heat transfer distance, and low heat transfer conversion rate of traditional flat plate solar collectors by incorporating a frame, transparent cover plate, insulation layer, absorber core, pipe array, and heat transfer channel.

Description

A Microchannel Flat Plate Heat Collector

technical field

The utility model relates to the technical field of solar thermal energy utilization equipment, in particular to a microchannel flat plate heat collector.

Background technique

The flat plate collector is a device that absorbs solar radiation energy and transfers heat to the working medium. It is a special heat exchanger. The working medium in the heat collector exchanges heat with the distant sun. Flat plate solar heat collection The device is composed of a heat-absorbing plate core, a shell, a transparent cover, heat-insulating materials and related parts. After adding a circulating pipeline and a heat-insulating water tank, it can absorb solar radiation heat and increase the water temperature.

Existing flat-plate heat collectors are mainly composed of heat-collecting plate cores, glass cover plates, and back plates, which have poor thermal insulation effects, long heat transfer distances, low heat transfer and heat exchange conversion rates, and are likely to cause waste of resources.

Utility model content

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the utility model provides a microchannel flat plate heat collector, which solves the problems of poor thermal insulation effect, long heat transmission distance and low heat transfer and heat exchange conversion rate of the traditional flat plate heat collector.

(2) Technical solution

In order to achieve the above object, the utility model provides the following technical solutions: a microchannel flat plate heat collector, including a frame, the top of the frame is provided with a transparent cover, and the inside of the transparent cover near the frame is poured with sealant, The outer cover of the frame is covered with a waterproof layer, the outer frame and the back of the frame are provided with a thermal insulation layer, and the inside of the frame is provided with a heat-absorbing plate core, the heat-absorbing plate core includes a row pipe, and the row The pipes are uniformly arranged on the frame, and the surface of the exhaust pipes is evenly coated with a heat-absorbing coating. One end of the exhaust pipes is connected to a water inlet pipe, and the drain pipes are vertically connected to the water inlet pipes. The other end of the water inlet pipes One end is installed on the upper end of the frame, the other end of the drain pipe is connected with an outlet pipe, the outlet pipe is vertically connected to the water inlet pipe, the outlet pipe is installed at the other end of the frame, the drain pipe is connected to the water inlet pipe and The outlet pipes are integrally connected, and both sides of the row pipes are provided with connecting plates, and the row pipes are clamped by connecting plates, and the connecting plates are connected by nuts.

Preferably, the shape of the frame is an irregular polygon.

Preferably, both the water inlet pipe and the water outlet pipe are provided with equalizing plates.

Preferably, the exhaust pipes, the water inlet pipes and the water outlet pipes are all hollow inside, and a heat transfer channel is formed between the row pipes, the water inlet pipes and the water outlet pipes.

Preferably, ribs to enhance heat transfer are arranged in the heat transfer channel.

(3) Beneficial effects

The utility model provides a microchannel flat plate heat collector, which has the following beneficial effects:

(1) The utility model is provided with row pipes and heat transfer channels, and is coated with a heat-absorbing coating on the surface of the row pipes, and is equipped with enhanced heat transfer ribs inside the heat transfer channels, which is beneficial to the absorption of flat plate collectors. Heat absorbs more heat in the same amount of time.

(2) The utility model shortens the distance of heat transmission by setting the exhaust pipe, the water inlet pipe and the water outlet pipe, and the integrated connection between the drain pipe, the water inlet pipe and the water outlet pipe, which is conducive to improving the conversion rate of heat exchange. The outer frame and the bottom of the frame are provided with an insulating layer, and the transparent cover plate and the edge of the frame are provided with a sealant, which is beneficial to thermal insulation.

(3) The utility model designs the frame as an irregular polygon by setting the frame, or it can be customized according to the shape of the roof, so that the flat plate collector is no longer restricted by the environment, it is more convenient to use, and it can also be embedded in the roof. On top, it looks more aesthetically pleasing.

Description of drawings

Fig. 1 is the front sectional view of the utility model;

Fig. 2 is an enlarged view of the structure of the heat-absorbing plate core in Fig. 1 of the present invention.

In the figure: 1 frame, 2 transparent cover plate, 3 sealant, 4 waterproof layer, 5 insulation layer, 6 heat-absorbing plate core, 7 row pipe, 8 water inlet pipe, 9 water outlet pipe, 10 connecting plate, 11 flow equalizing plate, 12 heat transfer channels, 13 enhanced heat transfer fins.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figure 1-2, the utility model provides a technical solution of a micro-channel flat plate heat collector: a micro-channel flat plate heat collector, including a frame 1, the shape of the frame 1 is an irregular polygon, or can be according to the roof The shape of the plate collector is customized, so that the flat plate collector is no longer restricted by the environment, and it is more convenient to use. It can also be inlaid on the roof, and the appearance looks more beautiful. The top of the frame 1 is provided with a transparent cover 2. The transparent cover 2 Sealant 3 is poured near the inner side of the frame 1, the outer cover of the frame 1 is covered with a waterproof layer 4, the outer frame and the back of the frame 1 are provided with an insulating layer 5, and the inside of the frame 1 is provided with a heat-absorbing plate core 6 to absorb heat. The hot plate core 6 includes a row pipe 7, which is evenly arranged on the frame 1, and the surface of the row pipe 7 is evenly coated with a heat-absorbing coating. The other end of the water inlet pipe 8 is installed on the upper end of the frame 1, the other end of the drain pipe 7 is connected to the outlet pipe 9, the outlet pipe 9 and the water inlet pipe 8 are vertically connected, and the outlet pipe 9 is installed on the frame 1 At the other end, both the water inlet pipe 8 and the water outlet pipe 9 are provided with a flow equalizer 11, and the exhaust pipe 7 is integrally connected with the water inlet pipe 8 and the water outlet pipe 9, which shortens the distance of heat transmission and is conducive to improving the efficiency of heat exchange. conversion rate, through the outer frame and the bottom of the frame 1 are provided with an insulating layer 5, and the transparent cover 2 and the edge of the frame 1 are provided with a sealant 3, which is conducive to heat preservation. The inside of the water pipe 9 is a hollow structure, and a heat transfer channel 12 is formed between the exhaust pipe 7, the water inlet pipe 8 and the outlet pipe 9. The heat transfer channel 12 is provided with enhanced heat transfer ribs 13, and the surface of the exhaust pipe 7 is coated with There is a heat-absorbing coating, and enhanced heat-transfer fins 13 are arranged inside the heat-transfer channel 12, which is beneficial to the heat-absorbing of the flat-plate collector, and absorbs more heat in the same time. A connecting plate 10 is provided, and the row pipes 7 are clamped by the connecting plate 10, and the connecting plates 10 are connected by nuts.

When in use, when the sunlight passes through the transparent cover plate 2 and irradiates on the row pipe 7 coated with the heat-absorbing coating on the surface, the solar radiation energy therein is absorbed by the heat-absorbing coating and converted into heat energy, and flows to the row pipe 7 and the inlet. In the heat transfer passage 12 formed between the water pipe 8 and the water outlet pipe 9, cold water enters from the water inlet pipe 8, heats up in the heat transfer passage 12, the temperature gradually rises, and flows out into the water storage tank through the water outlet pipe 9 for use. In this process, the enhanced heat transfer fins 13 provided inside the heat transfer channel 12 are beneficial to the heat absorption of the flat plate collector, and more heat is absorbed in the same time. The integrated connection between the water pipes 9 shortens the distance of heat transmission and is beneficial to improve the conversion rate of heat exchange.

To sum up, the utility model solves the problem of poor thermal insulation effect of traditional flat-plate collectors by setting frame 1, transparent cover plate 2, thermal insulation layer 5, heat-absorbing plate core 6, row pipe 7 and heat transfer channel 12. The problem of long transmission distance and low conversion rate of heat transfer and heat exchange.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (5)

1. A microchannel flat plate heat collector, comprising a frame (1), characterized in that: the top of the frame (1) is provided with a transparent cover (2), and the transparent cover (2) is close to the frame (1) ) is poured with sealant (3), the outer cover of the frame (1) is covered with a waterproof layer (4), and the outer frame and back of the frame (1) are provided with an insulating layer (5), the The inside of the frame (1) is provided with a heat-absorbing plate core (6), and the heat-absorbing plate core (6) includes a row of pipes (7), and the row of pipes (7) is evenly arranged on the frame (1), and the The surface of the exhaust pipe (7) is uniformly coated with a heat-absorbing coating, and one end of the exhaust pipe (7) is connected to a water inlet pipe (8), and the drain pipe (7) is vertically connected to the water inlet pipe (8). The other end of the water inlet pipe (8) is installed on the upper end of the frame (1), and the other end of the drain pipe (7) is connected with a water outlet pipe (9), and the water outlet pipe (9) and the water inlet pipe (8) Vertically connected between, the outlet pipe (9) is installed at the other end of the frame (1), the drain pipe (7) is integrally connected with the inlet pipe (8) and the outlet pipe (9), the row Both sides of the pipe (7) are provided with connecting plates (10), and the pipes (7) are clamped by connecting plates (10), and the connecting plates (10) are connected by nuts. 2. A microchannel flat plate heat collector according to claim 1, characterized in that: the shape of the frame (1) is an irregular polygon. 3 . The microchannel flat plate heat collector according to claim 1 , characterized in that: both the water inlet pipe ( 8 ) and the water outlet pipe ( 9 ) are provided with a flow equalizer ( 11 ). 4. A microchannel flat plate heat collector according to claim 1, characterized in that: the interior of the exhaust pipe (7), the water inlet pipe (8) and the water outlet pipe (9) are all hollow structures, and the A heat transfer channel (12) is formed between the exhaust pipe (7), the water inlet pipe (8) and the water outlet pipe (9). 5 . The microchannel flat plate heat collector according to claim 4 , characterized in that: fins ( 13 ) to enhance heat transfer are arranged in the heat transfer channel ( 12 ). 5 .