A temperature, humidity and three-effect integrated environmental control machine

Abstract

A temperature and humidity three-effect integrated environmental control machine, characterized in that the bottom of the shell has a filter, a first heat exchanger, a second heat exchanger, a compressor and a fan; the right part of the shell has a heat recovery heat exchanger and a three-way valve; the left part of the shell has a cold and heat source heat exchanger; the upper part of the shell has a third heat exchanger and a four-way valve; the exhaust port of the compressor is connected to the upper port of the second heat exchanger; the lower port of the second heat exchanger is connected to the inlet of the three-way valve; the c port of the three-way valve is connected to the inlet of the heat recovery heat exchanger; the outlet of the heat recovery heat exchanger is connected to the b port of the three-way valve and the inlet a of the four-way valve; the b port of the four-way valve is connected to the right port of the third heat exchanger; the left port of the third heat exchanger is connected to the inflow port of the throttling assembly; the outflow port of the throttling assembly is connected to the lower interfaces of the first heat exchanger and the cold and heat source heat exchanger; the upper interfaces of the first heat exchanger and the cold and heat source heat exchanger are connected in parallel to the c interface of the four-way valve; the inlet of the compressor is connected to the d outlet of the four-way valve; it solves the problems of dispersion of temperature and humidity control system and low energy utilization rate, and is especially suitable for large-scale environmental control.

Description

Technical Field

[0001] This utility model relates to the field of temperature and humidity control technology, specifically a comprehensive machine that integrates heat recovery, hot and cold water preparation, and hot and cold balance by utilizing refrigerant pipeline circulation. Background Technology

[0002] Traditional environmental control systems typically consist of independent air conditioning chiller / heat source units, fresh air handling units, indoor terminals, and a domestic hot water system. The air conditioning chiller / heat source units are usually air-source heat pump units, providing chilled water during the cooling season and hot water during the heating season. The fresh air handling units use the chiller / heat source provided by the air conditioning chiller / heat source units to cool, dehumidify, or heat the fresh air. The indoor terminals use the chiller / heat source provided by the air conditioning chiller / heat source units to provide cooling or heating to the rooms. The domestic hot water system uses a gas boiler or heat pump water heater to independently provide domestic hot water. Its disadvantages include a large footprint, dispersed system architecture, and low overall energy efficiency. Utility Model Content

[0003] This invention addresses the problems of large footprint, dispersed systems, and low energy efficiency in temperature and humidity control systems by providing a highly integrated environmental control system that enables cascaded energy utilization.

[0004] The technical solution of this utility model is a temperature and humidity three-effect integrated air control unit. Its special feature is that a fresh air treatment section is provided at the bottom of the casing, a heat recovery section is located on the upper right side of the fresh air treatment section, a heat balancing section is located at the upper part of the casing, and a hot and cold water preparation section is located on the lower left side of the heat balancing section. The fresh air treatment section includes: a vertical filter on the left side, a vertical first heat exchanger on the right side of the filter, a first electronic expansion valve on the upper left side of the first heat exchanger, a compressor on the right side of the first heat exchanger, and a vertical second heat exchanger on the right side of the compressor. A fan is installed on the right side of the heat exchanger, and a refrigerant electric ball valve is installed above the second heat exchanger; the heat recovery functional section includes a vertical heat recovery heat exchanger on the right, a three-way valve installed at the lower left side of the heat recovery heat exchanger, a check valve installed at the upper left side of the heat recovery heat exchanger, and a cold water inlet and a hot water outlet on the right side of the heat recovery heat exchanger; the hot and cold water preparation functional section includes a vertical cold and heat source heat exchanger on the left, a second electronic expansion valve installed at the lower right side of the cold and heat source heat exchanger, and an air conditioning system inlet and an air conditioning system outlet on the left side of the cold and heat source heat exchanger; the heat balance functional section includes... The system includes a horizontal third heat exchanger in the middle, a four-way valve on the right side of the third heat exchanger, a third throttling assembly consisting of a second one-way valve and a third electronic expansion valve connected in parallel on the left side of the third heat exchanger, and a horizontal heat exchange fan on the upper side of the third heat exchanger. The exhaust port of the compressor in the fresh air handling section is connected to the upper interface of the second heat exchanger via a refrigerant pipeline, and the lower interface of the second heat exchanger is connected to the inlet a of the three-way valve. A refrigerant electric ball valve is connected in parallel with the second heat exchanger on the refrigerant pipeline. The c-port of the three-way valve is connected to the refrigerant inlet of the heat recovery heat exchanger, and the refrigerant outlet of the heat recovery heat exchanger passes through a check valve and the three-way valve. The b-port and the inlet a of the four-way valve are connected; the b-outlet of the four-way valve is connected to the right port of the third heat exchanger, and the left port of the third heat exchanger is connected to the inlet end of the third throttling assembly; the outlet port of the third throttling assembly is divided into two paths, one path connecting to the lower port of the first heat exchanger through the first electronic expansion valve, and the other path connecting to the lower port of the cold / heat source heat exchanger through the second electronic expansion valve; the upper port of the first heat exchanger and the upper port of the cold / heat source heat exchanger are connected in parallel to the c-port of the four-way valve; the compressor inlet is connected to the d-outlet of the four-way valve through the refrigerant pipeline; thus, the refrigerant pipeline of the refrigeration system forms a closed loop. The hot water outlet of the heat recovery heat exchanger is connected to the water supply pipeline, and the cold water inlet is connected to the external water source; the air conditioning system inlet and outlet of the cold / heat source heat exchanger are connected to the water chiller air conditioning pipeline.During cooling, the first heat exchanger and the cold / heat source heat exchanger act as evaporators, while the second, third, and heat recovery heat exchangers act as condensers. After the fan in the fresh air handling section starts operating, the air is first purified by a filter, then sequentially cooled and dehumidified by the first heat exchanger, and reheated by the second heat exchanger, achieving purification and temperature / humidity regulation of the fresh air. The heating capacity is adjusted by controlling the refrigerant flow through the second heat exchanger by regulating the opening of the refrigerant electric ball valve. The heat recovery heat exchanger recovers the condensation heat of the refrigeration system for heating domestic or process water. The refrigerant flow direction controlled by the three-way valve controls whether the heat recovery heat exchanger is operational. The condensation heat that cannot be recovered by the second and heat recovery heat exchangers is discharged into the airflow provided by the heat exchange fan through the third heat exchanger. The chilled / hot water preparation section controls the opening of the second electronic expansion valve to achieve heat exchange between the refrigerant and the air conditioning water, producing chilled water for air conditioning. When the unit is in heating mode, the first heat exchanger, the second heat exchanger, the heat recovery heat exchanger, and the cold / heat source heat exchanger all function as condensers, while the third heat exchanger functions as an evaporator. After the fan in the fresh air handling section starts operating, the air is first purified by a filter, then sequentially heated once by the first heat exchanger and twice by the second heat exchanger, achieving purification and temperature regulation of the fresh air. The heating capacity is adjusted by controlling the refrigerant flow through the first heat exchanger by adjusting the opening of the first electronic expansion valve; the heating capacity is also adjusted by controlling the refrigerant flow through the second heat exchanger by adjusting the opening of the refrigerant electric ball valve. In the hot / cold water preparation section, the heat exchange between the refrigerant and the air conditioning water in the cold / heat source heat exchanger is achieved by adjusting the opening of the second electronic expansion valve, thus preparing hot water for air conditioning. When the unit is in heating mode, priority is given to supplying heat to the first heat exchanger and the cold and heat source heat exchanger. When there is excess heat in the system, the condensation heat of the refrigeration system is recovered through the heat recovery heat exchanger for heating domestic or process water. The operation of the heat recovery heat exchanger is controlled by controlling the refrigerant flow direction of the three-way valve. The cold and heat of the refrigeration system are discharged to the airflow provided by the heat exchange fan through the third heat exchanger.

[0005] The technical effect of this utility model is that, by adopting the above technical solution, a multifunctional machine with a compact structure integrating four major systems: fresh air treatment, heat recovery, hot and cold water preparation, and hot and cold balance can be realized. The system innovatively employs a multi-heat exchanger synergy and condensation heat staged utilization mechanism. In cooling mode, the system prioritizes the use of condensation heat for domestic hot water production through the heat recovery heat exchanger, achieving effective waste heat recovery. In heating mode, the start and stop of the heat recovery function can be dynamically adjusted according to demand, ensuring that the system always operates within the high-efficiency range and significantly improving overall energy efficiency. Each system is equipped with independent throttling and control components (such as electronic expansion valves, electric ball valves, and three-way valves), which precisely regulate the refrigerant flow through each heat exchanger and independently control its heat exchange capacity. This enables fine-tuning of multiple parameters such as outlet air temperature and water temperature, improving comfort and system adaptability. The unique heat and cold balance function section (the third heat exchanger and heat exchange fan) acts as the system's "reservoir," responsible for discharging excess heat during cooling and absorbing ambient heat during heating, effectively balancing system load fluctuations and ensuring that core components such as the compressor operate under stable conditions, thus improving system reliability and service life. Attached Figure Description

[0006] Figure 1 This is the main structural view of this utility model. In the diagram, 1 is the fresh air handling section, 2 is the filter, 3 is the first electronic expansion valve, 4 is the first heat exchanger, 5 is the compressor, 6 is the second heat exchanger, 7 is the refrigerant electric ball valve, 8 is the fan, 9 is the heat recovery heat exchanger, 10 is the hot water outlet, 11 is the cold water inlet, 12 is the heat recovery section, 13 is the check valve, 14 is the three-way valve, 15 is the four-way valve, 16 is the third heat exchanger, 17 is the heat exchange fan, 18 is the second one-way valve, 19 is the heat and cold balance section, 20 is the third electronic expansion valve, 21 is the hot and cold water preparation section, 22 is the air conditioning system inlet, 23 is the air conditioning system outlet, 24 is the cold and heat source heat exchanger, 25 is the second electronic expansion valve, 26 is the refrigerant pipeline, and 27 is the casing. Detailed Implementation

[0007] The present invention will be further described below with reference to the accompanying drawings and embodiments. As shown in the figures, a fresh air treatment functional section 1 is provided at the bottom of the housing 27, a heat recovery functional section 12 is provided on the upper right side of the fresh air treatment functional section 1, a cold and heat balance functional section 19 is provided at the upper part of the housing 27, and a hot and cold water preparation functional section 21 is provided on the lower left side of the cold and heat balance functional section 19; the fresh air treatment functional section 1 includes an upright filter 2 installed on the left, an upright first heat exchanger 4 installed on the right side of the filter 2, a first electronic expansion valve 3 installed on the upper left side of the first heat exchanger 4, a compressor 5 installed on the right side of the first heat exchanger 4, an upright second heat exchanger 6 installed on the right side of the compressor 5, a fan 8 installed on the right side of the second heat exchanger 6, and a fan 8 installed on the upper side of the second heat exchanger 6. The section 12 includes a refrigerant electric ball valve 7; the heat recovery function section 12 includes a vertical heat recovery heat exchanger 9 on the right, a three-way valve 14 on the lower left side of the heat recovery heat exchanger 9, a check valve 13 on the upper left side of the heat recovery heat exchanger 9, and a cold water inlet 11 and a hot water outlet 10 on the right side of the heat recovery heat exchanger 9; the hot and cold water preparation function section 21 includes a vertical cold and heat source heat exchanger 24 on the left, a second electronic expansion valve 25 on the lower right side of the cold and heat source heat exchanger 24, and an air conditioning system inlet 22 and an air conditioning system outlet 23 on the left side of the cold and heat source heat exchanger 24; the heat and cold balance function section 19 includes a middle section equipped with a refrigerant electric ball valve 7; the heat recovery function section 12 includes a vertical cold and heat source heat exchanger 9 on the right, a three-way valve 14 on the lower left side of the heat recovery heat exchanger 9, a check valve 13 on the upper left side of the heat recovery heat exchanger 9, and a cold water inlet 22 and an air conditioning system outlet 23 on the left side of the cold and heat source heat exchanger 24; the heat and cold balance function section 19 includes a central section equipped with ... A horizontal third heat exchanger 16 is installed. A four-way valve 15 is mounted on the right side of the third heat exchanger 16, and a third throttling assembly consisting of a second one-way valve 18 and a third electronic expansion valve 20 connected in parallel is mounted on the left side of the third heat exchanger 16. A horizontal heat exchange fan 17 is mounted on the upper side of the third heat exchanger 16. The exhaust port of the compressor 5 in the fresh air handling function section 1 is connected to the upper interface of the second heat exchanger 6 via a refrigerant pipe 26. The lower interface of the second heat exchanger 6 is connected to the inlet a of a three-way valve 14. A refrigerant electric ball valve 7 is connected in parallel with the second heat exchanger 6 on the refrigerant pipe 26. The c-port of the three-way valve 14 is connected to the refrigerant inlet of the heat recovery heat exchanger 9, and the refrigerant outlet of the heat recovery heat exchanger 9 passes through… Check valve 13 is connected to port b of three-way valve 14 and inlet a of four-way valve 15; outlet b of four-way valve 15 is connected to the right port of third heat exchanger 16, and left port of third heat exchanger 16 is connected to the inlet end of third throttling assembly; outlet of third throttling assembly is divided into two paths, one path is connected to the lower port of first heat exchanger 4 through first electronic expansion valve 3, and the other path is connected to the lower port of cold / heat source heat exchanger 24 through second electronic expansion valve 25; upper port of first heat exchanger 4 is connected in parallel with upper port of cold / heat source heat exchanger 24 to port c of four-way valve 15; inlet of compressor 5 is connected to outlet d of four-way valve 15 through refrigerant pipeline 26. Hot water outlet 10 of heat recovery heat exchanger 9 is connected to water pipeline, and cold water inlet 11 is connected to external water source; air conditioning system inlet 22 and air conditioning system outlet 23 of cold / heat source heat exchanger 24 are connected to water chiller air conditioning pipeline.When the unit is cooling, the first heat exchanger 4 and the cold / heat source heat exchanger 24 act as evaporators, while the second heat exchanger 6, the third heat exchanger 16, and the heat recovery heat exchanger 9 act as condensers. After the fan 8 in the fresh air handling section 1 starts running, the air is first purified by the filter 2, then cooled and dehumidified by the first heat exchanger 4, and reheated by the second heat exchanger 6, thus achieving the purification and temperature and humidity regulation of the fresh air. The heating capacity is adjusted by controlling the flow rate of the refrigerant flowing through the second heat exchanger 6 by adjusting the opening of the refrigerant electric ball valve 7. The heat recovery heat exchanger 9 recovers the condensation heat of the refrigeration system for heating water. The refrigerant flow direction controlled by the three-way valve 14 controls whether the heat recovery heat exchanger 9 is in operation. The condensation heat that cannot be recovered by the second heat exchanger 6 and the heat recovery heat exchanger 9 is discharged into the airflow provided by the heat exchange fan 17 through the third heat exchanger 16. The hot and cold water preparation section 21 controls the opening of the second electronic expansion valve 25 to achieve heat exchange between the refrigerant and the air conditioning water, thus preparing chilled water for air conditioning. When the unit is in heating mode, the first heat exchanger 4, the second heat exchanger 6, the heat recovery heat exchanger 9, and the cold / heat source heat exchanger 24 all act as condensers, and the third heat exchanger 16 acts as an evaporator. After the fan 8 of the fresh air handling function section 1 starts running, the air is first purified by the filter 2, and then heated once by the first heat exchanger 4 and twice by the second heat exchanger 6, thus achieving fresh air purification and temperature regulation. The heating capacity is adjusted by controlling the refrigerant flow through the first heat exchanger 4 by adjusting the opening of the first electronic expansion valve 3. The heating capacity is also adjusted by controlling the refrigerant flow through the second heat exchanger 6 by adjusting the opening of the refrigerant electric ball valve 7. The hot / cold water preparation function section 21 adjusts the opening of the second electronic expansion valve 25 to achieve heat exchange between the refrigerant and the air conditioning water in the cold / heat source heat exchanger 24, thus preparing air conditioning hot water. When the unit is in heating mode, priority is given to supplying heat to the first heat exchanger 4 and the cold and heat source heat exchanger 24. When there is excess heat in the system, the condensation heat of the refrigeration system is recovered through the heat recovery heat exchanger 9 for heating domestic or process water. The operation of the heat recovery heat exchanger 9 is controlled by controlling the refrigerant flow direction of the three-way valve 14. The cold and heat of the refrigeration system are discharged to the airflow provided by the heat exchange fan 17 through the third heat exchanger 16.

Claims

1. A temperature and humidity three-effect integrated air control unit, characterized in that: A fresh air treatment section is located at the bottom of the casing. A heat recovery section is located on the upper right side of the fresh air treatment section. A thermal balancing section is located at the top of the casing. A hot and cold water preparation section is located on the lower left side of the thermal balancing section. The fresh air treatment section includes: a vertical filter on the left; a vertical first heat exchanger on the right side of the filter; a first electronic expansion valve on the upper left side of the first heat exchanger; a compressor on the right side of the first heat exchanger; a vertical second heat exchanger on the right side of the compressor; a fan on the right side of the second heat exchanger; and a fan on the upper side of the second heat exchanger. Equipped with a refrigerant-operated electric ball valve; the heat recovery functional section includes a vertical heat recovery heat exchanger on the right, a three-way valve on the lower left side of the heat recovery heat exchanger, a check valve on the upper left side of the heat recovery heat exchanger, and a cold water inlet and a hot water outlet on the right side of the heat recovery heat exchanger; the hot and cold water preparation functional section includes a vertical cold and heat source heat exchanger on the left, a second electronic expansion valve on the lower right side of the cold and heat source heat exchanger, and an air conditioning system inlet and an air conditioning system outlet on the left side of the cold and heat source heat exchanger; the heat and cold balance functional section includes a horizontal... The third heat exchanger has a four-way valve on its right side and a third throttling assembly consisting of a second one-way valve and a third electronic expansion valve connected in parallel on its left side. A horizontal heat exchange fan is installed on the upper side of the third heat exchanger. The exhaust port of the compressor in the fresh air handling section is connected to the upper interface of the second heat exchanger via a refrigerant pipeline. The lower interface of the second heat exchanger is connected to the inlet a of a three-way valve. A refrigerant electric ball valve is connected in parallel with the second heat exchanger on the refrigerant pipeline. The c-port of the three-way valve is connected to the refrigerant inlet of the heat recovery heat exchanger. The refrigerant outlet of the heat recovery heat exchanger passes through a check valve. The valve is connected to the b port of the three-way valve and the a port of the four-way valve; the b outlet of the four-way valve is connected to the right port of the third heat exchanger, and the left port of the third heat exchanger is connected to the inflow end of the third throttling assembly; the outlet port of the third throttling assembly is divided into two paths, one path is connected to the lower port of the first heat exchanger through the first electronic expansion valve, and the other path is connected to the lower port of the cold and heat source heat exchanger through the second electronic expansion valve; the upper port of the first heat exchanger and the upper port of the cold and heat source heat exchanger are connected in parallel to the c port of the four-way valve; the air inlet of the compressor is connected to the d outlet of the four-way valve through the refrigerant pipeline.

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