DE3407453A1 - Heat pump with multiple utilisation - Google Patents

Abstract

The heat pump can be used simultaneously for domestic water heating and for room heating by means of a combination accumulator. The primary energy can come e.g. from the air, the earth, from water or another heat source. In this connection, the energy types available can be used individually, in part or all together. By multi-step switching (2 different compressors), good adaptation to the respective heat requirement can be achieved. The conventional circulating pump between storage accumulator and heat pump is omitted. By connecting a small compressor (power consumption below the free limit of the energy supply companies), the storage accumulator can be significantly reduced or omitted entirely. With the abovementioned installation, a possibility is afforded of installing a heating installation in any one-family or two-family house, which works independently of fossil fuels and considerably more economically than a conventional heating installation operated with oil or other fuels.

Description

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Heat pump with multiple use

The invention relates to a heat pump system for producing hot water and can be used for heating systems.

The primary energy for the heat pump can come from the air, from the absorber, from solar collectors, from the earth or from latent storage can be obtained via a multiple absorber. The hot water production in the combined buffer tank without additional charge pump carried out. Defrosting the icy Evaporator can at the same time with the heating circulation pump running take place.

We have been using the heat pumps for a long time. «Most of them, however, have an evaporator, who can only use one primary energy. With the new multiple vaporizer you can choose the cheapest type of energy (or several at the same time). This increases the possibility of use and the economy. In the for When heat pumps are currently on the market, the domestic water is heated in a completely separate storage tank. This can to technical problems, among other things to the so-called harmful "cycles of the heat pump" lead when the heat pump brings a relatively high performance. This is prevented with our combination storage tank. In addition, the total system price is included cheaper. With other heat pump systems, hot water generation can only be performed in conjunction with room heating be performed. Our combined storage tank and thus our domestic water, on the other hand, can also be heated without Heating water must be taken.

This combined system can be used in almost any one or Use a two-family house as partial or full heating (without other additional heating), even if there is no groundwater or geothermal collector is available. In this pail, the latent storage takes over the energy supply only at particularly low temperatures Outside temperatures. You can use the combined buffer tank

both underfloor heating and radiators can be connected.

By using two compressors, the heating system can be well adapted to the respective heating requirements of the house can be achieved. In addition, the heat pump can continue to work even if the energy supply required for heating

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Circulators conventional blocking time is switched _# Vmuß the performance of the ongoing compressor are below the free border of said power supply. In this case, the maximum heating output can be slightly below the usual output.

The aforementioned system results in an environmentally friendly heating system, primarily for all one and two-family houses.

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Claims (1)

Heat pump with multiple use 1. A heat pump that is used for both domestic water heating and space heating or other heating purposes can be used. Characterized in that the evaporator is designed as a multiple evaporator, such as. B. a) at the same time a circuit for the cooling circuit and a circuit for brine operation and air heat exchange. The circles can be in themselves, one pipe in the other, integrated or mounted next to each other and connected to each other in a thermally conductive manner be with simultaneous training as an air heat exchanger such. B. Execution with pressed-on heat conducting lamellas or other construction to absorb the air heat. b) Evaporator design as before, but with a third circuit, a third tube that is also integrated to conduct heat or mounted next to each other. This third circuit can be used to directly defrost with the heating water take place. Characterized in that the condenser is directly in a relatively large heating water - buffer storage, depending on Use and need, if possible, mounted in the lower bay is. The domestic hot water storage tank is also located in the upper part of the buffer tank Heating water storage tank. The connection for the heating water return is in the lowest area and the Heating water flow slightly offset as required on the upper part of the lower third of the heating water buffer cylinder. 3. Characterized in that the heat pump is equipped with two compressors individually or as a duo version, of which one compressor is just below the energy supply limit and the other compressor is selected in this way can be that it meets the heat demand including compressor 1 for the purpose in the power 3A07A53 '".-Λ enough. The second compressor is then usually temporarily blocked by the energy supply, so that the basic price totally omitted. 4. The system is characterized in that the primary energy through the air heat exchanger or in the evaporator the brine circuit pipe heat exchanger or both at the same time. A Earth collector, latent storage, solar collector or absorber can be connected in all conceivable designs. This makes it possible to choose the cheapest or the to use the cheapest primary sources to achieve the optimal coefficient of performance. There is also the possibility a latent storage or ground collector if possible run small, z. B. due to lack of space or costs, if the overall system is dimensioned accordingly will. Here you can get the primary energy from the ground collector or from the latent storage during short periods of cold use. The coefficient of performance is then significantly better than with a pure air-water heat pump or an absorber heat pump. If a relatively large amount of heat energy was then taken from Ek or latent storage, so can these are regenerated directly at higher temperatures in the air or the absorber, while the compressors not operated. The air lamellae can be defrosted directly from the heating water via the defrosting circuit be operated while the heating operation continues with the heating circulation pump. Only the compressors must be switched off during this' defrosting time. 5. The system is characterized in that the otherwise required heating circulation pump between the heat pump and Buffer memory is not required. There is also no need for the charging pump for domestic hot water that is otherwise common in heat pump systems. In the combination storage tank already listed, the natural temperature switching is used. If the domestic water is too cold, the heating circulation pump is throttled or switched off completely. The ones from The heat given off by the condenser now heats the entire heating water in the buffer storage tank. The warmer one rises Heating water always upwards and heats up via the non-insulated wall, between the heating and service water on. If the domestic water is warm enough, the heating circulation pump is enabled again and room heating continues operated, depending on your request with a plague temperature-outside temperature-dependent Regulation. 6. The advantages of using 2 compressors are a) that a compressor is not blocked by the EVU, the Buffer memory can be significantly reduced or z. Sometimes it can even be dispensed with entirely. b) that better performance can be matched to performance requirements. " c) that the starting current is lower. 7. The advantage of the entire heating system is that a relatively inexpensive heating system with relatively low operating costs optimally to the local conditions can be adjusted because different primary energies at the same time, individually or only z. T. used can be. The entire system can be monovalent, bivalent or parallel to an existing heating system operate.