CN2469378Y - Pressure-bearing vacuum tube solar energy heat collector - Google Patents

Abstract

The utility model relates to a pressure bearing solar energy heat collector with vacuum tubes, and comprises an all-glass vacuum collecting tube, a reflecting plate, a linking header pipe, a bracket and a water inlet and a water outlet which are arranged on the internal bladder of the linked header pipe. The utility model is characterized in that a plurality of U shaped pressure bearing heat exchanging tubes are arranged in the internal bladder of the linking header pipe. The portions where the U shaped pressure bearing heat exchanging tube and the linking header pipe penetrate are all in sealed connection. A big enough heat exchanging area is arranged between a plurality of U shaped pressure bearing heat exchanging tubes and the hot water in the internal bladder. The efficiency of heat exchanging is improved and the conformance between the pressure of the pressure bearing water tank of the pressure bearing water heater and the pressure of the running water is guaranteed. The performance is excellent and the using effect is good. The performance of high pressure bearing can be used for solar energy heat collecting system with a super large area.

Description

Pressurized vacuum tube solar collector

The utility model provides a pressure-bearing vacuum tube solar heat collector, which belongs to the technical field of solar heat utilization.

Most of the existing solar heat collectors are non-pressure-bearing, and the heat collector is composed of all-glass vacuum heat collecting tubes, reflectors, headers, brackets, and water inlets and outlets on the inner tank of the headers. One end of the vacuum heat collecting tube is connected and penetrated with the liner of the header, and the other end is fixed on the bracket; some heat collectors improve the pressure bearing capacity by strengthening the tailstock and frame, but the pressure bearing capacity is limited and the effect is not ideal. At present, high-pressure solar water heaters for domestic use require high-pressure collectors, and large-area solar collectors need high-lift circulating water pumps to realize circulating heat exchange. It is required that each unit collector must also be able to withstand sufficient pressure. , but the existing solar collectors are far from meeting the above requirements.

The purpose of the utility model is to provide a pressure-bearing vacuum tube solar heat collector with high thermal efficiency, good use effect and high pressure bearing.

The purpose of this utility model is achieved in that:

It consists of all-glass vacuum heat collecting tubes, reflectors, headers, brackets, and water inlets and outlets on the inner tank of the headers. It is characterized in that multiple U-shaped pressure bearings are added in the inner tank of the header The heat exchange tubes, the U-shaped pressure-bearing heat exchange tubes and the parts through which the header pipes penetrate are all sealed and connected.

In the pressure-bearing vacuum tube solar collector, the U-shaped pressure-bearing heat exchange tubes in the header liner can be straight tubes, serpentine tubes or corrugated tubes.

In the pressure-bearing vacuum tube solar heat collector, a plurality of U-shaped pressure-bearing heat exchange tubes can be connected in series or in parallel and then connected to the water inlet and outlet main pipes.

Its working principle is as follows: the hot water in the inner tank of the header continuously exchanges heat with the water in the U-shaped pressure-bearing heat exchange tube to heat it, and the hot water in the U-shaped pressure-bearing heat-exchange tube can be directly exchanged with the water in the pressure-bearing water tank. The water is heat exchanged by natural convection. Or, the hot water in the U-shaped pressure-bearing heat exchange tubes in the single or multiple series heat collectors exchanges heat with the water in the water tank through the circulating water pump.

Compared with the prior art, the utility model has the following advantages:

1. A plurality of U-shaped pressure-bearing heat exchange tubes in the form of straight tubes, serpentine tubes or corrugated tubes are arranged in the header liner to exchange heat with the hot water in the header liner, and there is a large enough heat exchange tube. Thermal area, high thermal efficiency;

2. The manifold liner is not directly connected to the water tank, but is connected to the water tank by a plurality of U-shaped pressure-bearing heat exchange tubes running through the manifold liner, so that the manifold liner is basically not under pressure and has a long service life Long, and the water tank connected to the collector can be made into a pressurized water tank to withstand the pressure of tap water, not affected by its installation position, with excellent performance, high water outlet pressure, and good use effect;

3. The water inlet and outlet ports of the U-shaped pressure-bearing heat exchange tubes can be conveniently arranged on the same upper side or the same lower side of the manifold, which is convenient for setting the water inlet and outlet pipes together, which is conducive to unified heat preservation.

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is a structural schematic diagram of an embodiment of a U-shaped pressure-bearing heat exchange tube using a serpentine tube header of the utility model;

Fig. 3 is a structural schematic diagram of an embodiment of a U-shaped pressure-bearing heat exchange tube using a corrugated tube header of the utility model;

Fig. 4 is a schematic structural diagram of a series connection embodiment of U-shaped pressure-bearing heat exchange tubes of the present invention;

Fig. 5 is a structural schematic diagram of an embodiment of parallel connection of two U-shaped pressure-bearing heat exchange tubes of the present invention;

In the figure: 1. All-glass vacuum heat collector 2. Bracket 3. Union header 4. U-shaped pressure-bearing heat exchange tube 5. Water inlet 6. Water outlet 7. Connector 8. Water inlet main pipe 9. Water outlet main pipe

Below in conjunction with accompanying drawing, the utility model is further described:

In Fig. 1: one end of the all-glass vacuum heat collecting tube 1 is connected and penetrated with the liner of the manifold 3, and the other end is fixed on the support 2, and the U-shaped pressure-bearing heat exchange tube 4 is arranged and fixed in the liner of the manifold 3, Its port passes through the header 3, and the U-shaped pressure-bearing heat exchange tube 4 is in sealing connection with the part through which the header 3 penetrates.

In Fig. 2: the U-shaped pressure-bearing heat exchange tube 4 in the liner of the manifold 3 is a serpentine tube.

In Fig. 3: the U-shaped pressure-bearing heat exchange tube 4 in the liner of the manifold 3 is a corrugated tube

In FIG. 4 : two U-shaped pressure-bearing heat exchange tubes 4 are connected in series in the header 3 via a connecting piece 7 .

In Fig. 5 : the water inlet and outlet ports of the two U-shaped pressure-bearing heat exchange tubes 4 in the joint header 3 are connected in parallel to the water inlet main pipe 8 and the water outlet main pipe 9 to be sealed and connected.

Claims (3)

1. A pressure-bearing vacuum tube solar heat collector, comprising an all-glass vacuum heat collecting tube (1), a reflector, a support (2), a joint header (3) and a set on the inner tank of the joint header (3) Composed of a water inlet (5) and a water outlet (6), it is characterized in that: a plurality of U-shaped pressure-bearing heat exchange tubes (4) are added in the liner of the manifold (3), and the U-shaped pressure-bearing heat-exchange tubes (4 ) are sealed in connection with the penetrating parts of the manifold (3). 2. The pressure-bearing vacuum tube solar collector according to claim 1, characterized in that: the U-shaped pressure-bearing heat exchange tube (4) in the liner of the header (3) can be a straight tube or a serpentine tube or bellows. 3. The pressurized vacuum tube solar heat collector according to claim 1, characterized in that: multiple U-shaped pressurized heat exchange tubes (4) can be connected in series or in parallel and then connected to the water inlet and outlet main pipes.

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