Air conditioning hot water system
By designing a multi-mode air-conditioning hot water system, using components such as four-way valves and electronic expansion valves, the functions of refrigeration, heating and heating water are realized, and the problem of weakening the refrigeration effect caused by excessive water temperature is solved, and the cooling effect is weakened by fan control. Enhance the condensation and heat dissipation effect, and achieve stable hot water recovery and cooling effects.
Patent Information
- Application Number
- CN202010714166.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-07-23
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2040-07-23
AI Technical Summary
The existing air-conditioning water heaters are weakened due to the increase in water temperature during cooling, and cannot achieve the heating function, resulting in waste of energy and insufficient functions.
An air-conditioning hot water system is designed, including a compressor, a four-way valve, a condenser water tank, an outdoor and indoor heat exchanger, and the cooling, heating and manufacturing are realized through the first and second electronic expansion valves and indoor and outdoor fans. The hot water operates in various modes, and the condensation and heat dissipation effect is enhanced by controlling the start and stop of the outdoor fan.
The functions of refrigeration and heating water and individual heating are realized, effectively recycled condensation waste heat, maintain stable refrigeration effect, and avoid the problem of poor condensation effect caused by excessive water temperature.
Smart Images
Figure CN111735166B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of air-conditioning systems, and in particular to an air-conditioning hot water system. Background Art
[0002] Conventional refrigeration air conditioners will discharge condensation heat into the air through the outdoor condenser when cooling, and this part of the heat is not used, resulting in energy waste. In view of this, air-conditioning water heaters that can recover condensation waste heat came into being. Existing air-conditioning water heaters produce domestic hot water by collecting condensation waste heat during cooling, but as the water temperature increases, the condensation temperature will continue to rise, and the condensation heat dissipation effect will deteriorate, causing the refrigeration effect of the air conditioner to continue to decay, and when the water temperature rises to a certain level, the unit will not be able to continue to operate. In addition, this conventional air-conditioning water heater can only realize the functions of cooling and hot water production, but cannot realize the heating function, and cannot fully utilize the functions of the unit. Summary of the invention
[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an air conditioning hot water system that can effectively avoid the problem of reduced refrigeration effect of the air conditioning system due to excessively high water temperature. At the same time, the system can realize multiple modes of operation and achieve multiple functions in one machine.
[0004] In order to achieve the above-mentioned purpose, an air-conditioning hot water system provided by the present invention includes a compressor, a first four-way valve, a condenser water tank, a second four-way valve, an outdoor heat exchanger, and an indoor heat exchanger. The D1, E1, S1, and C1 interfaces of the first four-way valve are respectively connected to the exhaust port of the compressor, one end of the indoor heat exchanger, the suction port of the compressor, and the inlet of the condenser water tank; the D2 and C2 interfaces of the second four-way valve are respectively connected to the outlets of the condenser water tank and one end of the outdoor heat exchanger, the other end of the indoor heat exchanger is connected to the other end of the outdoor heat exchanger, and the S2 and E2 interfaces of the second four-way valve are respectively bypass-connected between the indoor heat exchanger and E1 of the first four-way valve, and between the indoor heat exchanger and the outdoor heat exchanger.
[0005] Furthermore, it also includes a first electronic expansion valve and a second electronic expansion valve, the second electronic expansion valve is arranged between the indoor heat exchanger and the outdoor heat exchanger, and the E2 interface of the second four-way valve is connected between the second electronic expansion valve and the outdoor heat exchanger through the bypass of the first electronic expansion valve.
[0006] Furthermore, the indoor heat exchanger is equipped with an indoor fan, and the outdoor heat exchanger is equipped with an outdoor fan.
[0007] The present invention adopts the above scheme, and its beneficial effects are: 1) it can realize the functions of cooling and hot water production, heating, and independent hot water production, thereby achieving a one-machine-multiple-functions effect; 2) when cooling is performed by the above system, the condensation waste heat of the system can be recycled and utilized to make hot water, thereby effectively realizing heat recovery. At the same time, by controlling the start and stop of the outdoor fan, the condensation heat dissipation of the outdoor heat exchanger can be started and stopped, thereby enhancing the condensation heat exchange effect of the system and maintaining a stable refrigeration effect of the system. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a schematic diagram of the system composition of the present invention.
[0009] Figure 2 It is a principle diagram of the system of the present invention in cooling mode.
[0010] Figure 3 It is a principle diagram of the system of the present invention in a separate hot water production mode.
[0011] Figure 4 It is a principle diagram of the system of the present invention in the single heating mode.
[0012] Among them, 1-compressor, 2-first four-way valve, 3-condenser water tank, 4-second four-way valve, 5-first electronic expansion valve, 6-outdoor heat exchanger, 7-outdoor fan, 8-second electronic expansion valve, 9-indoor heat exchanger 9, 10-indoor fan. DETAILED DESCRIPTION
[0013] In order to facilitate the understanding of the present invention, the present invention is described more fully below with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. The purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.
[0014] See attached Figure 1 As shown, in this embodiment, an air-conditioning hot water system includes a compressor 1, a first four-way valve 2, a condenser water tank 3, a second four-way valve 4, a first electronic expansion valve 5, an outdoor heat exchanger 6, a second electronic expansion valve 8 and an indoor heat exchanger 9, wherein the first four-way valve 2 includes four interfaces D1, E1, S1, and C1, and the second four-way valve 4 includes four interfaces D2, E2, S2, and C2.
[0015] In this embodiment, the indoor heat exchanger 9 is equipped with an indoor fan 10 (the outdoor fan 10 is installed at a corresponding position of the outdoor heat exchanger 9), and the outdoor heat exchanger 6 is equipped with an outdoor fan 7 (the outdoor fan 7 is installed at a corresponding position of the outdoor heat exchanger 6).
[0016] In this embodiment, the D1, E1, S1, and C1 interfaces of the first four-way valve 2 are respectively connected to the exhaust port of the compressor 1, one end of the indoor heat exchanger 9, the suction port of the compressor 1, and the inlet of the condenser water tank 3; the D2 and C2 interfaces of the second four-way valve are respectively connected to the outlets of the condenser water tank 3 and one end of the outdoor heat exchanger 6, the other end of the indoor heat exchanger 9 is connected to the other end of the outdoor heat exchanger 6 via the second electronic expansion valve 8, and the S2 and E2 interfaces of the second four-way valve 4 are respectively bypass-connected between the indoor heat exchanger 9 and 2E1 of the first four-way valve, and between the second electronic expansion valve 8 and the outdoor heat exchanger 6.
[0017] Based on the above connection, the refrigerant flow path of the air-conditioning hot water system is formed. As a result, the system has the working modes of cooling, independent heating and independent hot water production. For easy understanding, the following specific working principles further illustrate the above working modes.
[0018] In this embodiment, as shown in the attached Figure 2 As shown, when the system is cooling, the D1 interface of the first four-way valve 2 is connected to the C1 interface, the E1 interface is connected to the S1 interface, the D2 interface of the second four-way valve 4 is connected to the C2 interface, the first electronic expansion valve is in a fully closed state, and the indoor fan 10 is turned on. At this time, the refrigerant is compressed into a high-temperature and high-pressure gas in the compressor 1 and sent out, and then transported to the condenser water tank through the first four-way valve for condensation (the refrigerant releases heat to heat the hot water in the condenser water tank), and then the refrigerant flows into the outdoor heat exchanger 6 through the D2-C2 interface of the second four-way valve, wherein the switch of the outdoor fan 10 of the outdoor heat exchanger 9 is controlled accordingly according to the water tank temperature of the condenser water tank:
[0019] Case 1: When the water temperature of the condenser water tank 3 is low, the indoor fan 7 does not start, and the refrigerant continues to flow to the second electronic expansion valve 8 without undergoing any heat exchange in the outdoor heat exchanger 6;
[0020] Case 2: When the water temperature of the condenser water tank 3 is higher than 40° C., the outdoor fan 7 is started, and the refrigerant can dissipate heat to the outside through the outdoor heat exchanger 6 .
[0021] When the condenser water tank 3 is in situation 1, as the system is running, the condensation heat of the refrigerant will be continuously transferred to the hot water in the condenser water tank 3, causing the temperature of the condenser water tank to continue to rise. Then, the condensation heat exchange effect of the refrigerant in the condenser water tank 3 will gradually deteriorate, and the refrigeration performance of the system will decay. When the condenser water tank 3 rises to 40°C, it switches to situation 2, activates the outdoor fan 7, improves the condensation and heat dissipation effect, and effectively avoids the problem of poor condensation effect caused by excessive water temperature. In addition, when the user uses the hot water in the condenser water tank 3, the water temperature will gradually drop. When the water temperature drops to 30°C, it switches to situation 1, and the outdoor fan 7 stops running until the water temperature rises to 40°C again, and then the outdoor fan 7 will be restarted.
[0022] Subsequently, after passing through the condenser water tank 3 and the outdoor heat exchanger 6, the refrigerant continues to flow to the second electronic expansion valve 8 for throttling. The throttled refrigerant flows into the indoor heat exchanger 9 to absorb heat in the indoor air and evaporate into gas, thereby lowering the temperature of the indoor air, thereby achieving a refrigeration effect. Finally, the low-temperature refrigerant vapor flows back to the air inlet of the compressor 1 through the E1 and S1 ports of the first four-way valve 2, thereby completing a refrigeration process.
[0023] In this embodiment, as shown in the attached Figure 3 As shown, when the system is performing hot water heating alone, the D1 port of the first four-way valve 2 is connected to the C1 port, the E1 port is connected to the S1 port, the D2 interface of the second four-way valve 4 is connected to the E2 interface, the C2 interface is connected to the S2 interface, the second electronic expansion valve 8 is in a fully closed state, and the outdoor fan 10 is started. At this time, the refrigerant is compressed into a high-temperature and high-pressure gas in the compressor 1 and then sent out, and then sent to the condenser water tank 3 through the first four-way valve 2 for condensation (releasing heat to heat the hot water in the water tank), and then flows to the first electronic expansion valve 5 through the D2-E2 interface of the second four-way valve 4 for throttling. The throttled gas-liquid two-phase refrigerant flows into the outdoor heat exchanger 6 to absorb the heat in the outdoor air and evaporate into gas. Finally, the low-temperature refrigerant vapor flows to the first four-way valve 2 through the C2 and S2 ports of the second four-way valve 4, and then flows back to the air inlet of the compressor 1 through the E1 and S1 ports, thereby completing a hot water heating process.
[0024] In this embodiment, as shown in the attached Figure 4As shown, when the system performs independent heating, the D1 interface of the first four-way valve 2 is connected to the E1 interface, the C1 interface is connected to the S1 interface, the D2 interface of the second four-way valve 4 is connected to the C2 interface, the first electronic expansion valve 4 is in a fully closed state, and the outdoor fan 7 and the indoor fan 10 are started. At this time, the refrigerant is compressed into a high-temperature and high-pressure gas in the compressor 1, and then transported to the indoor heat exchanger 9 through the D1 interface and the E1 interface of the first four-way valve 2 for condensation (releasing heat to heat the indoor air). The condensed refrigerant flows to the second electronic expansion valve 8 for throttling. The throttled gas-liquid two-phase refrigerant flows into the outdoor heat exchanger 6 to absorb the heat in the outdoor air and evaporate into gas, and then flows into the condenser water tank 3 through the C2 port and the D2 port of the second four-way valve 4, and finally flows back to the air inlet of the compressor 1 through the C1 interface and the S1 interface of the first four-way valve 2, thereby completing a heating process.
[0025] When the above system is used for cooling, the system's condensation waste heat can be recycled to make hot water, effectively realizing heat recovery. At the same time, by controlling the start and stop of the outdoor fan, the condensation heat dissipation of the outdoor heat exchanger can be started and stopped, thereby enhancing the system's condensation heat exchange effect and maintaining the system's cooling effect stable.
[0026] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any technician familiar with the art who, without departing from the scope of the technical solution of the present invention, makes more possible changes and modifications to the technical solution of the present invention using the technical content disclosed above, or modifications are all equivalent embodiments of the present invention. Therefore, any equivalent and equivalent changes made according to the ideas of the present invention without departing from the content of the technical solution of the present invention should be included in the protection scope of the present invention.
Claims
1. An air conditioning hot water system, comprising a compressor (1), a first four-way valve (2), a condenser water tank (3), a second four-way valve (4), an outdoor heat exchanger (6), and an indoor heat exchanger (9), characterized in that: The D1, E1, S1, and C1 interfaces of the first four-way valve (2) are respectively connected to the exhaust port of the compressor (1), one end of the indoor heat exchanger (9), the air intake port of the compressor (1), and the inlet of the condenser water tank (3); the D2 and C2 interfaces of the second four-way valve are respectively connected to the outlet of the condenser water tank (3) and one end of the outdoor heat exchanger (6), and the other end of the indoor heat exchanger (9) is connected to the other end of the outdoor heat exchanger (6); the S2 and E2 interfaces of the second four-way valve (4) are respectively connected to the indoor heat exchanger (9) to the first The invention relates to a heat exchanger having a heat dissipation device and a heat dissipation device, wherein the heat dissipation device comprises a first electronic expansion valve (5) and a second electronic expansion valve (8), wherein the second electronic expansion valve (8) is arranged between the indoor heat exchanger (9) and the outdoor heat exchanger (6), and an E2 interface of the second four-way valve (4) is connected between the second electronic expansion valve (8) and the outdoor heat exchanger (6) via a bypass of the first electronic expansion valve (5); the indoor heat exchanger (9) is provided with an indoor fan (10), and the outdoor heat exchanger (6) is provided with an outdoor fan (7).