DE202017104807U1 - Water-water / air-water heat pump with heat recovery - Google Patents

Abstract

Water-to-water / air-water heat pump with heat recovery, comprising a compressor, a freon / water heat exchanger, a freon / air heat exchanger, a freon / water heat exchanger for domestic hot water, a freon storage, a four-way valve and Solenoid valves, characterized in that the compressor (1) has a frequency control and that on the one hand by a solenoid valve (2) in a first stage, a four-way valve (3) with reversing function and a three-way valve (4) with inverse function, with a freon / water Slat heat exchanger (5) in an internal circuit, on the other hand by a solenoid valve (6) in a second stage with a freon / water fin heat exchanger (7) for domestic hot water and from the third side by the solenoid valve (2) of the first Stage and the four-way valve (3) with reversing function, with a freon / water-fin heat exchanger (8) in an external circuit or with a freon / air heat exchanger (8.1) in External circuit is connected, wherein the freon / water-fin heat exchanger (5) in the inner circuit by an electronic expansion valve (9) in the first stage, a Freon heat exchanger (10) tube in the tube and an electronic expansion valve (11) in the second Stage is connected to the freon / water finned heat exchanger (8) in the outer circuit or with the Freon / air heat exchanger (8.1) in the outer circuit, wherein the freon / water finned heat exchanger (7) for domestic hot water by an electronic Expansion valve (12) in a third stage with the freon heat exchanger tube in the tube (10) and the second stage electronic expansion valve (11) with the freon / water fin heat exchanger (8) in the outer circuit or with the freon / air Heat exchanger (8.1) is connected in the outer circuit, the Freon / Vasser finned heat exchanger (8) in the outer circuit or the Freon / air heat exchanger (8.1) in the outer circuit through the four-way valve (3) with Umk function, the freon reservoir (13) and the freon heat exchanger tube in the tube (10) or by a solenoid valve (14) of the third stage, the freon reservoir (13) and the freon heat exchanger tube in the tube (10) with the compressor (1) is connected.

Description

THE iNVENTION field

The invention relates to a water-water or air-water heat pump with heat recovery, which uses renewable energy for the production of heat energy, and an application for heating and / or cooling of buildings, hot water preparation for domestic and industrial purposes, cooling of production processes u , a.

State of the art

There is known a heat recovery air-water heat pump comprising a compressor, a freon / water heat exchanger, a freon / air heat exchanger, a domestic hot water heat exchanger, a freon storage, a four-way valve and electromagnetic valves. The configuration of the heat pump and the connection of the components have been developed with the possibility of cooling, heating, high temperature heating for domestic hot water and heat recovery mode (1).

Furthermore, a heat recovery heat pump is known which comprises a compressor, a first heat exchanger, a second heat exchanger, a domestic hot water heat exchanger, a Freon accumulator, a four-way valve, electromagnetic valves and electronic expansion valves. The configuration of the heat pump and the connection of the components have been developed with the possibility of cooling, heating, high temperature heating for household hot water, heating and domestic hot water mode and heat recovery mode (2).

These known heat pumps offer no possibility for simultaneous water production with two heat streams, a high temperature zone 2 and a low temperature zone 1 , with optimal operation of the chiller.

Disclosure of the invention

The invention has for its object to provide a water-water or air-water heat pump with heat recovery, the simultaneous production of water with two heat streams, a high-temperature zone 2 and a low temperature zone 1 , so that optimum operation of the chiller, the working pressure and the condensing temperature, ensured and their performance is increased.

The object is achieved by the present water-water heat pump having a heat recovery, which includes a compressor, a freon / water heat exchanger, a freon / air heat exchanger, a heat exchanger for domestic hot water, a freon storage , a four-way valve and solenoid valves, solved. According to the invention, the compressor has a frequency control and is on the one hand by a solenoid valve in a first stage, a four-way valve with reversing function and a three-way valve with inverse function with a freon / water-fin heat exchanger in an internal circuit, on the other hand by a solenoid valve in a second stage a freon / water finned heat exchanger for domestic hot water and third side by the first-stage solenoid valve and the inverse four-way valve with a freon / water finned heat exchanger in an external circuit or with a freon / air heat exchanger in the outer circuit , According to the invention, the freon / water fin heat exchanger is in the inner circuit by an electronic expansion valve in the first stage, a Freon heat exchanger tube in the tube and an electronic expansion valve in the second stage with the freon / water fin heat exchanger in the outer circuit or connected to the freon / air heat exchanger in the outer circuit. The freon / water finned heat exchanger for domestic hot water is through an electronic expansion valve in a third stage, the freon heat exchanger tube in the pipe and the electronic expansion valve in the second stage with the freon / water finned heat exchanger in the outer circuit or with connected to the freon / air heat exchanger in the outer circuit. In turn, the freon / water finned heat exchanger in the outer circuit or the freon / air heat exchanger in the outer circuit through the four-way reversing valve, a freon storage and the freon heat exchanger tube in the pipe or by a solenoid valve in the third stage, the freon -Speicher and the Freon heat exchanger tube in the pipe, connected to the compressor.

The advantages of the invention are in particular the possibility of simultaneous water production with two heat flows with optimum operation of the refrigerator, thus increasing their efficiency and reducing operating costs.

Summary of the attached figures

An embodiment of a water-water or air-water heat pump with heat recovery as the subject of the present invention is shown in the accompanying figures. The invention will be explained with reference to these figures, but not limited. Show it:

1 a schematic diagram of a two-zone water-water heat pump with heat recovery and

2 a schematic diagram of a two-zone air-water heat pump with heat recovery.

Embodiment of the invention

In 1 The water-to-water or air-to-water heat pump with heat recovery includes a compressor 1 with frequency control, on the one hand by a solenoid valve 2 in a first stage, a four-way valve 3 with reversing function and a three-way valve 4 with reverse function with a freon / water fin heat exchanger 5 is connected in an internal circuit. On the other hand, the compressor is 1 through a solenoid valve 6 in a second stage with a freon / water-fin heat exchanger 7 connected for hot water for household purposes. From the third side is the compressor 1 through the solenoid valve 2 the first stage and the four-way valve 3 with reverse function with a freon / water fin heat exchanger 8th in an external circuit or with a freon / air heat exchanger 8.1 connected in the external circuit. In turn, is the freon / water-fin heat exchanger 5 in the inner circuit through an electronic expansion valve 9 in the first stage, a Freon heat exchanger 10 "Pipe in the pipe" and an electronic expansion valve 11 the second stage with the freon / water finned heat exchanger 8th in the external circuit or with the freon / air heat exchanger 8.1 connected in the external circuit. The freon / water finned heat exchanger 7 for domestic hot water is through an electronic expansion valve 12 in a third stage, the freon heat exchanger tube in the tube 10 and the electronic expansion valve 11 the second stage with the freon / water finned heat exchanger 8th in the external circuit or with the freon / air heat exchanger 8.1 connected in the external circuit. The freon / water finned heat exchanger 8th in the external circuit or the freon / air heat exchanger 8.1 in the outer circuit are in turn by the four-way valve 3 with inverse function with a freon memory 13 and the freon heat exchanger tube in the pipe 10 or by a solenoid valve 14 in the third stage, the freon memory 13 and the freon heat exchanger tube in the tube 10 with the compressor 1 connected to frequency control.

The heat pump according to the invention can operate in five main operating modes:
Cooling: In this operating mode, the heat extracted from the indoor circuit (building air conditioning system) is conducted into the environment through the chiller to the external circuit and discharged to the soil layers or into the atmosphere.

Operating principle in cooling mode

The hot vapors pass through the four-way valve 3 with reverse function and flow into the freon / water-fin heat exchanger 8th in the external circuit or in the freon / air heat exchanger 8.1 in the outer circuit. The liquefied coolant passes through the electronic expansion valve one after the other 11 in the second stage, the freon heat exchanger tube in the pipe 10 and the electronic expansion valve 9 the first stage and evaporates in the freon / water-fin heat exchanger 5 in the inner circulation. Thereafter, the low-pressure vapors pass through the three-way valve 4 , the four-way valve 3 , the freon memory 13 and the freon heat exchanger tube in the tube 10 , and the vapors are from the compressor 1 sucked.

Heating: In this mode, the heat extracted from the environment from the outdoor circuit / outdoor heat exchanger is routed through the chiller and the low temperature circuit in zone 1 to the building.

Operating principle in the operating mode heating

The hot vapors from the compressor 1 drive through the four-way valve 3 and the three-way valve 4 and flow into the freon / water fin heat exchanger 5 in the inner circuit. The liquefied coolant passes through the electronic expansion valve one after the other 9 in the first stage, the freon heat exchanger tube in the pipe 10 and the electronic expansion valve 11 the second stage and evaporates in the freon / water-fin heat exchanger 8th in the external circuit or in the freon / air heat exchanger 8.1 in the external circuit. Thereafter, the low-pressure vapors pass through the four-way valve 3 , the freon memory 13 and the freon heat exchanger tube in the tube 10 , and the vapors are from the compressor 1 sucked.

High-temperature heating (Domestic hot water): In this mode, the heat extracted from the environment from the outdoor circuit / outdoor heat exchanger is routed through the chiller to the building and delivered to the high-temperature circuit in Zone 2.

Operating principle in high-temperature heating mode

The hot vapors from the compressor 1 flow into the freon / water lamella heat exchanger 7 for domestic hot water. The liquefied coolant passes through the electronic expansion valve one after the other 12 in the third stage, the freon heat exchanger tube in the pipe 10 and the electronic expansion valve 11 in the second stage and evaporates in the freon / water-fin heat exchanger 8th in the external circuit or in the freon / air heat exchanger 8.1 in the external circuit. Thereafter, the low-pressure vapors pass through the four-way valve 3 , the freon memory 13 and the freon heat exchanger tube in the tube 10 , and the vapors are from the compressor 1 sucked.

Combined Heating and Domestic Hot Water Mode: In this mode, the heat extracted from the outside of the outdoor circuit / outdoor heat exchanger is routed through the chiller to the building and sequentially first to the high temperature circuit, zone 2, and then to the indoor circuit / low temperature circuit, zone 1, issued.

Working principle in the two-zone operating mode High temperature zone 2 and low temperature zone 1

The hot vapors from the compressor 1 flow into the freon / water lamella heat exchanger 7 for domestic hot water (high temperature zone 2 ), in which they are cooled to dry saturated vapors. Then they drive through the three-way valve 4 and flow into the freon / water fin heat exchanger 5 in the inner circuit (low temperature zone 1 ) one. The liquefied coolant passes through the electronic expansion valve one after the other 9 the first stage, the freon heat exchanger tube in the pipe 10 and the electronic expansion valve 11 the second stage and evaporates in the freon / water-fin heat exchanger 8th in the external circuit or in the freon / air heat exchanger 8.1 in the external circuit. Thereafter, the low-pressure vapors pass through the four-way valve 3 , the freon memory 13 and the freon heat exchanger tube in the tube 10 , and the vapors are from the compressor 1 sucked.

Heat recovery mode; First in this mode is the recovery of waste heat in the building and its conversion into useful heat for the production of hot water for domestic purposes or heat for technological purposes. In the case of excess heat, the heat is dissipated into the environment through the outer circuit, and in the case of heat deficiency, a reverse process takes place; the heat is absorbed from the environment.

Working principle in the operating mode waste heat recovery

The hot vapors from the compressor 1 flow into the freon / water lamella heat exchanger 7 for domestic hot water (high temperature zone 2 ) in which they condense. Then they pass through the Freon heat exchanger tube in the pipe 10 and the expansion valve 9 the first stage. The vapors flow into the freon / water finned heat exchanger 7 in the inner circuit, where they are evaporated. Thereafter, the low-pressure vapors pass through the three-way valve 4 , the four-way valve 3 , the freon memory 13 and the freon heat exchanger tube in the tube 10 , and the vapors are from the compressor 1 sucked.

Sub-mode waste heat recovery with heat energy surplus:

The excess amount of heat energy is dissipated to the environment by removing a portion of the hot vapors from the compressor's four-way valve 3 passes through and into the freon / water-fin heat exchanger 8th in the external circuit or in the freon / air heat exchanger 8.1 flows in the outer circuit. The liquefied coolant passes through the electronic expansion valve one after the other 11 the second stage, the freon heat exchanger tube in the pipe 10 and the electronic expansion valve 9 the first stage and evaporates in the freon / water-fin heat exchanger 5 in the inner circulation. Thereafter, the low-pressure vapors pass through the three-way valve 4 , the four-way valve 3 , the freon memory 13 and the freon heat exchanger tube in the tube 10 , and the vapors are from the compressor 1 sucked.

Sub-mode waste heat recovery with thermal energy shortage:

The required amount of heat energy is absorbed from the environment by adding part of the freon / water-fin heat exchanger 7 for domestic hot water (high temperature zone 1 ) freon condensed successively the freon heat exchanger tube in the tube 10 and the electronic expansion valve 11 passes through the second stage and the freon / water-fin heat exchanger 8th in the external circuit or in the freon / air heat exchanger 8.1 evaporated in the outer circuit. Thereafter, the low-pressure vapors pass through the solenoid valve 14 the third stage, the freon memory 13 and the freon heat exchanger tube in the tube 10 , and the vapors are from the compressor 1 sucked.

The operating modes described are shown in the attached figures as follows: 1 - cooling 2 - Heater 3 - Hot water for household purposes 4 - Hot water for household purposes and heating 5 - Heat recovery 6 - Heat recovery with excess heat 7 - Heat recovery with heat deficiency

The two-zone water-to-water / air-water heat recovery heat pump according to the invention is a conceptual solution, which is the working principle of a water chiller, a heat pump and a system for producing high temperature hot water all year round for domestic and / or technological purposes united by the waste heat in the cooling mode is utilized. The freezing of the liquid refrigerant and the overheating of the low pressure vapors in the tube heat exchanger in conjunction with the two-stage throttling of Freon refrigerant increase the efficiency of the chiller and ensure safe operation of the compressor, thereby increasing the reliability of the system. The intended frequency control of the compressor ensures the adaptive operation of the system and a high seasonal performance.

The invention of the system in the two variants, water-water heat pump and air-water heat pump, allows the construction of a compact system, which is enclosed in a sound-insulating housing, so that it can be easily integrated into the technical building equipment without any inconvenience during to cause their operation.

In the air-water system it is provided that the outer body includes only a heat exchanger, a fan and electronic components. The installation of the compressor in the sound-insulated indoor module instead of in the outer body guarantees low-noise operation of the system.

Literature:

• 1. CN 201377934
• Second CN 203880998

Claims (1)

Water-to-water / air-water heat pump with heat recovery, comprising a compressor, a freon / water heat exchanger, a freon / air heat exchanger, a freon / water heat exchanger for domestic hot water, a freon storage, a four-way valve and Solenoid valves, characterized in that the compressor ( 1 ) has a frequency control and that on the one hand by a Magnetic valve ( 2 ) in a first stage, a four-way valve ( 3 ) with reversing function and a three-way valve ( 4 ) with reversing function, with a freon / water-fin heat exchanger ( 5 ) in an internal circuit, on the other hand by a solenoid valve ( 6 ) in a second stage with a freon / water-fin heat exchanger ( 7 ) for domestic hot water and from the third side through the solenoid valve ( 2 ) of the first stage and the four-way valve ( 3 ) with reversing function, with a freon / water-fin heat exchanger ( 8th ) in an external circuit or with a freon / air heat exchanger ( 8.1 ) is connected in the outer circuit, wherein the freon / water-fin heat exchanger ( 5 ) in the internal circuit through an electronic expansion valve ( 9 ) in the first stage, a freon heat exchanger ( 10 ) Tube in the tube and an electronic expansion valve ( 11 ) in the second stage with the freon / water-fin heat exchanger ( 8th ) in the external circuit or with the freon / air heat exchanger ( 8.1 ) is connected in the outer circuit, wherein the freon / water-fin heat exchanger ( 7 ) for domestic hot water through an electronic expansion valve ( 12 ) in a third stage with the Freon heat exchanger tube in the tube ( 10 ) and the electronic expansion valve ( 11 ) of the second stage with the freon / water-fin heat exchanger ( 8th ) in the external circuit or with the freon / air heat exchanger ( 8.1 ) in the external circuit, the Freon / Vasser finned heat exchanger ( 8th ) in the external circuit or the freon / air heat exchanger ( 8.1 ) in the outer circuit through the four-way valve ( 3 ) with inverse function, the freon memory ( 13 ) and the Freon heat exchanger tube in the tube ( 10 ) or by a solenoid valve ( 14 ) of the third stage, the freon memory ( 13 ) and the Freon heat exchanger tube in the tube ( 10 ) with the compressor ( 1 ) connected is.

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