DOMESTIC WATER HEAT RECOVERY UNIT

TR202607182A3Pending Publication Date: 2026-07-21DOGU IKLIMLENDIRME SANAYI VE TICARET ANONIM SIRKETI
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Patent Information

Authority / Receiving Office
TR · TR
Patent Type
Applications
Current Assignee / Owner
DOGU IKLIMLENDIRME SANAYI VE TICARET ANONIM SIRKETI
Filing Date
2026-05-07
Publication Date
2026-07-21

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Abstract

The invention relates to a heat recovery unit (10) that enables the recovery of heat from the air expelled from the space and the conditioning of the space air. The unit includes a fresh air inlet (21), a space return inlet (23), a space blow-off outlet (22) and an exhaust outlet (24) on the main body (20). The unit contains a compressor (50), an evaporator (40), a condenser (30), a main line (70), a discharge line (71) and a water tank (60) for heating the domestic water. The novelty of the invention is that the refrigerant is R290, the hot refrigerant exiting the compressor (50) can be directed to a heat transfer line (80) passing through the water tank (60) and a control element (90) that controls the flow at the junction of the discharge line (71), the main line (70) and the heat transfer line (80). Figure 1
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Description

1 TARIFF DOMESTIC WATER HEAT RECOVERY UNIT TECHNICAL AREA 5 The invention relates to the heating and cooling of room air and the recovery of heat from waste air. It relates to a heat recovery unit that provides domestic hot water heating functionality. PREVIOUS TECHNIQUE 10 Heat recovery units meet the ventilation needs within a building. They are used to reduce the energy losses that occur. In these devices, the external Heat transfer between exhaust air expelled into the environment and fresh air taken from the outside environment. This ensures that fresh air is filtered to a certain extent before being introduced into the interior environment. It is possible to condition them. Heat recovery systems are especially suitable for residential buildings. It contributes to maintaining indoor air quality in offices and similar enclosed spaces. In addition, heat pump systems provide heating or cooling via a refrigerant cycle. It is used to meet cooling needs. As for domestic hot water needs... typically with electric heaters, boilers, water heaters or separate heat pump units 20 This is why ventilation, room air conditioning and usage are considered. Water heating applications are mostly separate systems in current technology. It is carried out through this channel. In current applications, different needs are met with separate devices, resulting in a system as a whole being 25 This leads to a more complex situation. Ventilation device, heating and cooling. The selection and installation of the device and the domestic hot water production equipment separately, first This increases investment costs and requires a larger assembly area. Multiple In buildings where the device is used, energy consumption increases, maintenance requirements rise, and Ensuring compatibility between system components becomes difficult. Furthermore, there are 30 independently operating components. Unused energy resources in equipment are not being utilized adequately, and the total System efficiency remains limited. Hot water production depends on user needs and the room air. a balanced operation between heating, cooling of the space air and fresh air supply It is becoming more difficult to obtain them. This situation is particularly problematic in residential applications due to device sizes. This leads to negative consequences in terms of noise level, energy consumption, and operating costs. 35 2 In conclusion, all the problems mentioned above necessitate an innovation in the relevant technical field. It has made it mandatory. A BRIEF DESCRIPTION OF THE INVENTION The present invention aims to eliminate the aforementioned disadvantages and contribute to the relevant technical field. It is related to a heat recovery unit, aiming to bring new advantages. One purpose of the invention is to condition the air in a space and to heat domestic water. The goal is to perform their functions on a single heat recovery unit. 10 Another aim of the invention is to utilize both air and air through a single refrigerant cycle. A simpler and more efficient single-compressor system that provides both water conditioning and domestic hot water heating. The goal is to establish a system. All the purposes mentioned above and those that will emerge from the detailed explanation below. The present invention aims to recover heat from waste air expelled from a space. It enables the recovery of used air drawn from the interior through its main body. an exhaust outlet where air is expelled, and a fresh air inlet where clean air is drawn in from the outside environment, In the unit, the processed fresh air passes through a blower chamber in the main body and is delivered to the space. 20 including a room blow-off outlet and a room return inlet where air is drawn back from the interior, a system containing an evaporator and a condenser, with a cooler between the evaporator and the condenser. a compressor that enables the circulation of fluid, by the compressor the refrigerant, pressurized and advanced through the discharge line, to the evaporator or 25 for heating domestic water, including a main line that directs it to the condenser. It is a heat recovery unit containing a water tank. Accordingly, its innovation lies in the aforementioned cooler. The fluid being R290, pressurized by the compressor and conveyed through the discharge line. water tank so that the coolant's heat can be transferred to the water inside the water tank It includes a heat transfer line with a pipe passing through it, heat transfer via a discharge line. At the junction of the lines, at least a portion of the coolant flows into the main line and / or heat transfer occurs. a control that provides control so that it can be optionally routed to the transfer line It includes a single compressor refrigerant cycle. Thus, it can both The system provides both air conditioning for the indoor environment and heating of domestic water, separately. A hot water compressor is not needed. 35 3 A characteristic feature of a possible configuration of the invention is that the control element is a solenoid valve. Thus, the coolant flow into the heat transfer line is adjusted according to the domestic hot water heating requirements. It can be controlled electrically. Another possible configuration of the invention features a 5-bit connection between the discharge line and the heat transfer line. It contains a T-pipe at the point where it joins. This allows the refrigerant coming from the discharge line to flow through. The main line and the heat transfer line are separated. Another possible configuration of the invention involves heating the water inside the water tank. It includes an external electric heater that provides heat transfer. Thus, 10 is provided via the heat transfer line. In cases where the heating is insufficient, additional heat is added to the domestic water in the water tank. It can be provided. Another possible configuration of the invention features the heat transfer line inside the water tank. It contains a tube that extends in a serpentine or coiled tube arrangement. Thus, the cooler 15 The surface area for heat exchange between the fluid and the service water is increased. Another possible configuration of the invention features a water tank inside the heat transfer line. The pipe is made of copper. This allows for heat transfer between the coolant and the water. It is high. 20 Another possible configuration of the invention features a main line in which the refrigerant is... a four-way valve that changes the direction of circulation between the evaporator and the condenser It includes. Thus, by using the same heat exchangers, cooling is achieved in summer operation and in winter operation. Heating is possible when the device is in operation. 25 BRIEF DESCRIPTION OF THE FIGURES Figure 1 shows a representative preliminary isometric view of the heat recovery unit. Figure 2 shows a representative schematic view of the heat recovery unit. DETAILED DESCRIPTION OF THE INVENTION This detailed explanation of the invention does not merely aim to provide a better understanding of the subject matter; it does not contain any 35 This is explained with examples that will not create a limiting effect. 4 Figure 1 shows a representative isometric view of the heat recovery unit (10). Heat recovery The heat recovery unit (10) evaluates the heat carried by the air expelled from a space and The word refers to a structure used for the purpose of improving the local air quality. The unit in question is responsible for ensuring airflow and holding system components together. It has a main body (20) that allows different parts of the unit to be connected to a 5 It acts as a framework for holding things together and directing airflow within the system. He sees. The unit contains a compressor (50), an evaporator (40) and a condenser (30). The subject elements are related to the heat transfer and fluid circulation of the heat recovery unit (10). It forms the basic working structure. The compressor (50) compresses the fluid in the system. It is the element that enables circulation. Evaporator (40) transfers heat taken from the environment to the fluid. It ensures the transfer of heat carried by the fluid. The condenser (30) ensures the transfer of heat carried by the fluid. These elements provide the necessary components for the unit to exchange heat. This enables the cycle to occur. Thus, heat is transferred through the circulation of the fluid within the system. The processes of taking in heat and adding heat are carried out. On the main body (20), there is an exhaust outlet (24) so ​​that the unit can carry out airflow. There is a fresh air inlet (21), a room blowing outlet (22) and a room return inlet (23). Exhaust outlet (24) is the 20 of the air taken from inside the space and to be sent to the outside environment. Fresh air inlet (21) ensures that outside air is removed from the unit. (20) allows it to be included. The return entrance (23) is located within the neighborhood. It ensures that the air is drawn back into the unit for reprocessing. Space blowing. The outlet (22) directs the processed air back into the space. It ensures that the air flow in question is created within the main body (20). There is also at least one fan that provides airflow within the main body (20). the advancement of air through the sections and the movement of air between the inlets and outlets This ensures that the air taken from the interior space and the air taken from the outside environment are combined in the unit. They are then dispatched to the relevant regions and, after processing, are routed through appropriate exits. is being redirected. 30 Figure 2 shows a representative schematic view of the unit. Inside the unit is the compressor. Circulation of refrigerant between evaporator (40) and condenser (30) (50) There is a main line (70) that provides cooling with the operation of the compressor (50). The fluid is compressed and the coolant, whose temperature has increased, leaves the compressor (50) 35 It exits and proceeds along a discharge line (71). The discharge line (71) comes from the compressor (50) It ensures that the coolant coming out is conveyed to the main line (70). On the main line (70), depending on the operating condition of the refrigerant, to the evaporator (40) or to the condenser (30) There may be directional change elements that enable its orientation. Preferred In this configuration, the directional change element in question is a four-way valve. Four-way The valve controls the direction of circulation of the refrigerant between the evaporator (40) and the condenser (30). changing and depending on the operating condition of the same heat exchangers, evaporator (40) or 5 It enables the condenser (30) to function as a summer work environment. Coolant coming from the discharge line (71) to the condenser (30) for cooling the air The heat is sent to a heat exchanger where it releases the heat it carries. The refrigerant released passes through the liquid line (72) to the evaporator (40) and here It exchanges heat with the air taken from the space. Then the refrigerant flows back to 10 It returns to the compressor (50) and the cycle is continued. In winter operating conditions, however The direction of coolant circulation is changed, and the heat located on the blower side of the space is transferred. The changer condenser (30) is working. In this case, the coming from the discharge line (71) The hot coolant transfers heat to the air that will be introduced into the space, then to the liquid. It passes through line (72) to the evaporator (40). Here the refrigerant absorbs heat 15 then it returns to the compressor (50). Thus, using the same cycle elements Cooling the indoor air in the summer months and heating the indoor air in the winter months is provided. The heat recovery unit (10) includes a water tank (60). The water tank (60) holds 20 of the domestic water. It ensures the storage and heating of water within the unit. Water tank (60), main body (20) It contains a compressor (50), evaporator (40) and condenser (30) and In addition to its air conditioning function, the unit also allows for the production of hot water for domestic use. It gives. While the unit is running, the refrigerant coming out of the compressor (50) reaches a high temperature. and this temperature is reached and instead of being used only in the air conditioning cycle, 25 It is also used for heating domestic water. For this purpose, a water tank (60) There is a heat transfer line (80) passing through it. Heat transfer line (80), The heat of the hot coolant coming out of the compressor (50) with the water in the water tank (60) It enables them to shop. The heat transfer line (80) includes a pipe (81) that runs inside the water tank (60) and the said The heat carried by the coolant passing through the pipe (81) is transferred to the water through the pipe (81) wall. It is transferred to the water supply in the tank (60). In the preferred configuration, the pipe (81) is the water The pipe (81) extends in a serpentine or coiled line inside the tank (60). The coolant is placed in the tank (60) in the form of a serpentine or coiled line, 35 Heat through a wider contact surface with the service water in the water tank (60). This arrangement allows for the purchase of water. Thanks to this layout, the heat transfer line (80), water 6 It makes efficient use of the volume inside the tank (60) and heats the water for use. The transfer is distributed throughout the water tank (60). Thus, the coolant and the service water Heat transfer is carried out without mixing and the use in the water tank (60) water, heat obtained from the refrigerant cycle created by the compressor (50) It is heated with 5. In the heat recovery unit (10), the discharge line (71) and the main line (70) and the heat transfer line (80) has a control element (90) at the point where it joins. Control element (90), how much of the hot refrigerant from the compressor (50) goes into the main line (70) and how much It is used to determine how much of it will be sent to the heat transfer line (80). Usage 10 When there is no need to heat the water, at least some of the coolant is in the main line (70) The air is directed through the evaporator (40) and condenser (30) and the unit heats the air. or continues the air cooling function. When there is a need for domestic hot water heating, however... The control element (90) ensures that at least one of the hot refrigerants coming from the compressor (50) It transmits part of it to the heat transfer line (80) and this fluid passes through the water tank (60) 15 It transfers heat to the service water. The coolant coming out of the heat transfer line (80) is more then proceeds in the cycle to be related again to the main line (70) and evaporator It participates in the circulation between (40) and the condenser (30). Thanks to this structure, the same The refrigerant pressurized by the compressor (50) is both the room air It is used for both conditioning and heating domestic water. Control element 20 (90), coolant flow according to hot water demand and operating status of the unit adjusting and heating the water tank (60) without the need for a separate hot water compressor. It makes the transfer possible. In the preferred configuration, the control element (90) is a solenoid valve. The solenoid valve, 25 It is switched on and off according to the need for heating water and comes from the discharge line (71). It controls the passage of the coolant into the heat transfer line (80). With the discharge line (71) A T-pipe is located at the junction of the heat transfer line (80). The T-pipe is a pressure pipe. coolant coming from line (71) towards main line (70) and heat transfer line (80) It allows for separation. The solenoid valve enables heat transfer of the flow separated through the T-tube. It enables the transmission to the line (80) or the deactivation of this line. Solenoid the ability to electrically control the opening and closing movement of the valve, domestic water The coolant flow is controlled quickly and precisely depending on the temperature or hot water demand. It allows adjustment. In this way, the heat transfer line (80) is adjusted only as needed. It is activated in cases where it is detected and the coolant is not unnecessarily used in the water tank (60) 35 This prevents water from passing through. Thus, when there is a demand for domestic hot water heating, it is hot. The coolant is directed to the heat transfer line (80) inside the water tank (60), 7 When there is no demand for domestic water heating, the coolant is discharged through the main line (70). It is circulated in the air conditioning cycle. The pipe (81) in the heat transfer line (80) is preferably made of copper. Choosing the pipe (81) from copper material, the heat carried by the coolant water tank (60) 5 This facilitates its transfer to the water supply. The refrigerant circulated in the heat recovery unit (10) is R290 (propane). R290 has a low environmental impact due to its low global warming potential. It reduces and, thanks to its high latent heat of vaporization, the effective heat in the heat pump cycle is 10. It provides conveying capacity. In the cycle using R290, the output from the compressor (50) heat carried by the coolant at high temperature and high pressure, water tank (60) It can be transferred to the service water via the heat transfer line (80) that passes through it. In this way, both the evaporator (40) and the condenser can be produced with a single compressor (50) within the unit. (30) air conditioning cycle is carried out and a separate refrigerant 15 without the need for a circuit and a separate compressor (50) inside the water tank (60) The system provides heating for domestic water use. An external water tank (60) is installed to support the heating of domestic water. There is an electric heater. The external electric heater heats the water in the water tank (60) 20 It is connected to the water tank (60) in such a way that it can exchange heat with the water tank (60) It is located within the facility. During the operation of the heat recovery unit (10) Heating of the domestic water is primarily done by the coolant passing through the heat transfer line (80). This is provided through [the system]. However, the water temperature for domestic use must be at the specified temperature. if the value remains below, the hot water demand increases or the 25 obtained from the compressor (50) cycle If the generated heat is insufficient to meet the immediate needs, an external electric heater is activated. When the external electric heater is switched on, the usage in the water tank (60) is taken. Additional heat is added to the water, and the water temperature is brought to the target value. is provided. When the domestic water temperature reaches the set value, an external electrical outlet is activated. The heater's operation can be stopped. This allows the external electric heater to operate continuously for 30 seconds. not as the main heat source, but supporting heating provided via heat transfer line (80) It is used as an auxiliary heat source. According to all these explanations, the heat recovery unit (10) is used for heating the room air and Cooling and heating of domestic water functions in a single refrigerant cycle 35 The unit performs this through heat transfer provided by the R290 refrigerant. It operates with a single compressor (50) by taking advantage of its capacity and hot water supply. 8 It does not require a separate compressor (50) cycle for its needs. In this way, the device structure It is becoming simpler, the number of parts is decreasing, and the space occupied by the system is decreasing. Furthermore... coolant to heat transfer line (80) according to domestic water demand The system's controllability ensures harmony between air conditioning and hot water production. This allows the unit to reduce energy consumption by 5% in residential applications. to reduce, increase ease of installation and maintenance and to provide a more efficient integrated heat It contributes to achieving a recycling structure. The scope of protection of the invention is specified in the claims attached hereto, and these details are strictly adhered to. The explanation cannot be limited to those given for illustrative purposes. Because a 10-year-old who is an expert in the field... the person, without deviating from the main theme of the invention, in light of what has been described above, similar It is clear that these structures can emerge. 9 REFERENCE NUMBERS GIVEN IN THE FIGURE Heat Recovery Unit Main Body 5 21 Fresh Air Intakes 22 Room Blower Outlet 23 Neighborhood Return Entrance 24 Exhaust Outlets Condenser 40 Evaporators 50 Compressors 15 60 Water Tanks 70 Main Lines 71 Printing Line 20 72 Liquid Line 80 Heat Transfer Lines 81 Pipes 90 Control Elements

Claims

REQUESTS 1. The invention enables the recovery of heat from waste air expelled from a space. On the main body (20), the used air drawn from the interior is expelled. an exhaust outlet (24), a fresh air inlet (21) from which clean air is taken from the outside environment, 5 The fresh air processed in the unit passes through a blowing chamber in the main body (20) a blower outlet (22) into which air is given to the interior and a return air from the interior containing a return inlet (23), an evaporator (40) and a condenser (30), circulating refrigerant between evaporator (40) and condenser (30) containing a compressor (50) that provides pressurization by the compressor (50) and 10 the refrigerant that is advanced in the discharge line (71) to the evaporator (40) or including a main line (70) that directs to the condenser (30), use heat recovery unit (10) which includes a water tank (60) for heating water Its feature is that the mentioned refrigerant is R290, by the compressor (50) The temperature of the coolant that is pressurized and advanced in the discharge line (71) is 15 water passing through tank (60) so that it can be transferred into tank (60) It includes a heat transfer line (80) with a pipe (81), heat transfer with discharge line (71). At the junction of the line (80), at least some of the coolant flows into the main line (70) and / or optionally directed to the heat transfer line (80) It contains a control element (90) that provides control. 20 2. A heat recovery unit (10) according to claim 1, and its feature is; control element (90) It is a solenoid valve.

3. A heat recovery unit (10) according to claim 1, its feature is; heat 25 with discharge line (71). The transfer line (80) includes a T-pipe at the point where it joins.

4. A heat recovery unit (10) according to claim 1, and its feature is; water tank (60) It contains an external electric heater that heats the water inside.

5. A heat recovery unit (10) according to claim 1, and its feature is; heat transfer line (80) a pipe extending in a serpentine or coiled pipe (81) arrangement inside the water tank (60) (81) is included.

6. A heat recovery unit (10) according to claim 1, and its characteristic is that it has 35 in the heat transfer line. (80) The pipe inside the water tank (60) is (81) copper pipe. 11 7. A heat recovery unit (10) according to claim 1, and its feature is; on the main line (70), direction of circulation of refrigerant between evaporator (40) and condenser (30) It includes a four-way valve that changes the flow.