Method for operating a heat pump device
A heat pump device and cycle operation technology, applied in heat pump, household heating, heating methods, etc., can solve the problems of loss, power factor not reaching high, circulating medium and heating cycle temperature related problems, etc.
Inactive Publication Date: 2013-11-20
ROBERT BOSCH GMBH
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Problems solved by technology
[0009] The disadvantages of the prior art result from the fact that the best possible hysteresis curve is different depending on the heat pump installation and mainly depending on the state of the overall installation (use side, additional heating, etc.) The temperature dependence of the circulation loop
Correspondingly, it is very difficult for the assembler to arrive at the correct setting, which will no longer be optimal when the temperature changes, especially the given temperature and the temperature of the circulating medium
In addition, losses will be formed when a given temperature is exceeded due to the relatively hot heating medium ahead of the bypass line in the delivery line
Therefore, the power factor (COP) will not reach the theoretically achievable height
Method used
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Embodiment Construction
[0062] figure 1 A heat pump device 1 with a heating circuit 10 and a regulating unit 60 is shown.
[0063] The heating circuit 10 through which a heating medium 11 flows here consists of a first heat exchanger 41 and a second heat exchanger 42, which are passed through a supply line 101 and a return line 102 are connected. A bypass line 80 hydraulically connects the delivery line 101 to the return line 102 . Furthermore, a first pump 21 is arranged downstream of the bypass line 80 in the delivery line 101 and a second pump 22 is arranged downstream of the bypass line 80 in the return line 102 .
[0064] The heat pump device 1 has a circuit through which the coolant 6 flows, and the second heat exchanger 42 is arranged in this circuit in such a way that a communication between the coolant 6 and the heating medium 10 can take place in the second heat exchanger 42 . heat transfer between them. Furthermore, the second heat exchanger 42 is connected to an evaporator 5 , in part...
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The invention relates to a method for operating a heat pump device having an associated heating circuit in which a heating medium circulates and which has a first heat exchanger and a second heat exchanger, which are connected by means of a flow line and a return line, wherein a bypass hydraulically connects the flow line and the return line, a first pump is arranged in the flow line downstream of the bypass or in the return line upstream of the bypass, a second pump is arranged in the flow line upstream of the bypass or in the return line downstream of the bypass, wherein the heat pump device and the heating circuit are thermally coupled by means of the second heat exchanger. It is the aim of the invention to increase the coefficient of performance (COP) of the heat pump device by better designing the activation and deactivation phases. The solution should have economic advantages and be reliable and easy to use. The method according to the invention is characterised in that a control unit deactivates the heat pump device as soon as an efficiency loss is greater than a starting loss when restarting the heat pump device.
Description
technical field [0001] The invention relates to a method for operating a heat pump arrangement according to the preamble of claim 1 . Background technique [0002] Heat pumps are known from the prior art for obtaining heat, which are used, for example, as heating systems in buildings or motor vehicles. The heat gain is achieved here in that the temperature of the coolant in a heat exchanger is lower than the temperature of the circulating medium by the generated low pressure, so that the circulating medium transfers heat to the flowing coolant via the heat exchanger. In this way, for example, for air-type heat pumps, heat can be transferred from the circulating air to the coolant even at very low ambient temperatures, e.g. below 0°C, as long as the temperature of the coolant in the heat exchanger is also 0°C the following. [0003] The coolant heated in the heat exchanger then flows to a second heat exchanger under pressure. Due to the high pressure that occurs here, the ...
Claims
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IPC IPC(8): F24D3/18F24D19/10F25B49/02
CPCF25B49/022F25B30/02F25B2339/047F24D3/18F25B2700/21161F24D19/1039Y02B30/12F24H15/38F24H15/375
Inventor M·托儿斯滕
Owner ROBERT BOSCH GMBH