JPS63187057A - Heat collector - Google Patents

Abstract

PURPOSE:To enable stable and efficient heat collection of solar heat and surrounding atmosphere heat with a small-sized and compact constitution without being influenced by a variation of solar radiation and a variation of surrounding atmosphere speed by a method wherein a heat collector unit of a heat collector having coolant utilized in the heat collecting device is constituted by a fin tube tube heat exchanger, a blower fan for forcedly aerating a part of the coolant is provided and a fin pitch at the forced aeration part is made more close than a fin pitch at a non-forced aeration part. CONSTITUTION:A natural aeration part 41 and a forced aeration part 42 of a heat collector 4 are of a fin tube type heat exchanger which is constituted by fins 46 and a coolant pipe 47. A fin pitch of the forced aeration part 42 is made more close than a fin pitch of the natural aeration part 41(non-forced aeration part). At the natural aeration part 41, a fin pitch is made rough and a front area is made relatively large to cause a heat receiving area for a solar heat to be attained. At the forced aeration part 42, a fin pitch is made close in order to take efficiently a surrounding atmospheric heat, resulting in that a small-sized and compact unit can be made. In case of the above-described heat collector, a heat collection under a natural convection of air flow and a solar heat collection of the solar radiation heat collection are carried out. At the forced aeration part 42, the surrounding atmospheric heat is efficiently collected form the surrounding atmosphere through the forced aeration of the surrounding atmosphere under operation of the blower fan 44 and at the same time the solar heat collecting operation through the solar radiation is also carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heat collecting device that utilizes natural energy such as solar heat and atmospheric heat.

BACKGROUND OF THE INVENTION Conventionally, methods have been proposed in which a refrigeration cycle is used as a heat collecting device that utilizes natural energy such as solar heat or atmospheric heat. That is, as shown in FIG. 2, a compressor 1, a condenser 2
, an expansion valve 3, and a heat collector 4 are sequentially connected in a ring to form a refrigeration heat collection cycle, and a hot water storage tank 5, a water circulation pump 6, and a water heater 7 are sequentially connected to form a water heating circuit. The heater 7 is configured with a double tube heat exchanger, etc., and is maintained in a heat transfer relationship to constitute a heat collecting device.

To explain the operation of the heat collecting device, by driving the compressor 1, the refrigerant gas compressed to high temperature and high pressure is transferred to the condenser 2.
flows into. Here, the water heater 7, which is in a heat transfer relationship with the condenser 2, radiates heat to the flowing hot water by the action of the water (1 & ring pump 6) and condenses and liquefies it.Then, the pressure is reduced by the expansion valve 3, the temperature becomes low, and the water is collected. It flows into the heating unit 4 and evaporates.The evaporation temperature of the refrigerant is set lower than the atmospheric temperature, so it absorbs heat from the sun's heat and atmospheric heat, evaporates into gas, and is sucked into the compressor 1 again. - Hot water heated by the power water heater 7 is sequentially stored in the hot water storage tank 5.

Since the above heat collection device absorbs heat from solar heat and atmospheric heat, it is possible to obtain a large amount of heat collection in a small area, and it is also possible to collect heat from atmospheric heat even when there is no solar radiation. It is possible to measure the expansion of

However, the problem with the heat collector is that the amount of heat collected fluctuates greatly, and hunting tends to occur due to fluctuations in high and low pressures due to changes in outside wind speed and solar radiation acting on the heat collector. As a solution to these drawbacks, Japanese Patent Application Laid-Open No. 58-2050
There is a configuration equipped with a blower fan as shown in FIG. 3, which was proposed in 48. In Fig. 3, 8 is a fin, 9 is a refrigerant pipe, 10 is a cross flow fan, 11 is a rear guider, 1
2 is a stabilizer, 15 is a ventilation case, and 14 is an air outlet. In the heat collector with a fan configured as described above, it is possible to prevent changes in the amount of heat absorbed by the heat collector due to changes in the outside air wind speed. It is necessary to increase the front surface area to some extent, which has the disadvantage that the distribution of airflow by the blower fan becomes poor. Furthermore, in order to obtain the necessary ventilation over the entire area, there is a drawback that the blower fan must be made larger than necessary.

Problems to be Solved by the Invention The present invention is intended to solve these conventional problems, and in the case where a refrigerant is applied to a heat collector, the heat collector can be made small and compact, and solar heat and atmospheric heat can be efficiently collected. The purpose is to provide a configuration that can collect heat well.

Means for Solving the Problems In order to achieve this object, the present invention applies a refrigerant to a heat collecting device, in which the heat collecting device is configured with a fin-tube heat exchanger, and a part of the heat collecting device is forcedly ventilated. A blower fan is provided, and the fin pitch of the forced ventilation section is made closer than that of the non-forced ventilation section.

Function: With this configuration, the collector as a whole not only absorbs solar heat, but the forced ventilation section equipped with a blower fan mainly collects heat from the atmosphere, and the collector as a whole absorbs solar heat. Since only a part of the collector is configured to have forced ventilation, by configuring only this part to be suitable for forced ventilation, the configuration can be made smaller and more compact than before, and the collector as a whole can efficiently collect solar heat and atmospheric heat. It can be heated.

EXAMPLE An example of the present invention will be described below with reference to FIG. In Fig. 1, 1 is a compressor, 2 is a condenser, 3 is an expansion valve,
Reference numeral 4 denotes a heat collector, which are successively connected in an annular manner to form a refrigerant heat circuit. 5 is a hot water tank, 6 is a water circulation pump, 7
These are successively connected in a water heater to form a water heating circuit. The condenser 2 and water heater 7 are constructed of a double-tube heat exchanger or the like and are maintained in a heat transfer relationship. The heat collector 4 is partitioned into a natural ventilation section 41 and a forced ventilation section 42 by a partition plate 43, and the forced ventilation section 42 is equipped with a ventilation fan 44 such as a propeller fan. Both the natural ventilation section 41 and the forced ventilation section 42 of the heat exchanger 4 are fin-tube heat exchangers composed of fins 46 and refrigerant pipes 47, and the fin pitch of the forced ventilation section 42 is set to the natural ventilation section 4 t (- JPdfam 1 letter + a 蔗)/7'17ノy)' ,,, 'P ±J'1
$11. 45 is a back plate.

In the above configuration, the natural ventilation section 41 collects heat from the atmosphere through natural convection of air currents, so if the fin pitch is made dense, ventilation resistance increases and natural convection is inhibited. Therefore, the fin pitch of the natural ventilation section 41 needs to be coarse. - In the forced ventilation section 42, forced ventilation is performed by the ventilation fan 44, so ventilation resistance can be tolerated to some extent, and the fin pitch needs to be dense in order to maintain the required ventilation speed of the fins 46. . As described above, in the natural ventilation section 41, the fin pitch is made coarse,
By making the front surface area relatively large, the area for receiving solar heat is maximized, and the forced ventilation section 42 can be made smaller and more compact by making the fin pitch denser in order to effectively absorb atmospheric heat.

In the heat collector configured as described above, the natural ventilation section 41 collects atmospheric heat through natural convection of airflow and solar heat collection through solar radiation heat collection, and the forced ventilation section 42 collects outside air forcibly by operating the blower fan 44. Ventilation efficiently collects atmospheric heat from the outside air, and also collects solar heat from sunlight.

DETAILED DESCRIPTION OF THE INVENTION As described in detail, the present invention provides a heat collection device using natural energy using a refrigeration cycle, in which the heat collector is configured with a fin-tube heat exchanger, and a portion thereof is equipped with a blower fan for forced ventilation. By making the fin pitch of the forced ventilation section closer than that of the non-forced ventilation section (natural ventilation section), a small and compact configuration is possible, and it is almost unaffected by solar radiation fluctuations and outside air wind speed fluctuations. Solar heat and atmospheric heat can be collected stably and efficiently.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a heat collector according to an embodiment of the present invention, FIG. 2 is a block diagram of a conventional heat collector, and FIG. 3 is a sectional view of a conventional heat collector. 1... Compressor, 2... Condenser, 3...
...Expansion valve, 4... Heat collector, 5...
・Hot water tank, 6...Water circulation pump, 7...
・Water heater, 42... Forced ventilation section, 44...
...Blower fan, 46...Fin, 47...
...Refrigerant pipe. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure/--1 Compressor 2- Condenser 3-. 1? , 5'& Valve 4 ・~ Soft Pa 7-Water feeder η・-Kane War 7j Cold U-・Mao fan

Claims (1)

[Claims] A refrigerant heat collection circuit in which a compressor, a condenser, an expansion valve, and a heat collector are sequentially connected in a ring, and a water heating circuit in which a heat exchanger for exchanging heat with the condenser, a hot water storage tank, and a circulation pump are sequentially connected, A heat collecting device in which the heat collector is constituted by a fin-tube heat exchanger, and a part of the heat collector is provided with a blower fan for forced ventilation, and the fin pitch of the forced ventilation section is made denser than the fin pitch of the non-forced ventilation section.