Tri-generation fresh air conditioning system capable of recycling condensate water

Abstract

The triple co-generation fresh air conditioning system comprises a triple co-generation main machine, a fresh air handling unit, a domestic hot water tank and a purification water storage device, the triple co-generation main machine prepares cold water to provide cold water for a surface air cooler of the fresh air handling unit, and meanwhile the triple co-generation main machine recovers condensation heat to prepare hot water to the domestic hot water tank; a condensate water outlet of the fresh air handling unit is connected with an inlet of the purification water storage device, condensate water discharged by the fresh air handling unit is conveyed into the purification water storage device, the purification water storage device is used for purifying and storing the condensate water, and a water outlet of the purification water storage device is connected with a drinking water outlet faucet. According to the utility model, the water purification and storage device is additionally arranged at the condensate water outlet of the fresh air handling unit to collect condensate water generated in the refrigeration and dehumidification process of the fresh air handling unit and prepare the condensate water into purified water which can be directly drunk, so that water resources are saved; the system is directly applied to an existing triple co-generation system or applied in the early stage of system building.

Description

Technical Field

[0001] This utility model belongs to the field of fresh air conditioning technology, specifically relating to a three-generation fresh air conditioning system that recycles and utilizes condensate. Background Technology

[0002] Fresh air handling units can provide fresh air to the room, effectively regulate indoor air quality, and ensure the respiratory safety and thermal comfort of people indoors. The principle is to draw in fresh outdoor air through a fan, and then send it into the room after filtration, heating, cooling, humidification and dehumidification.

[0003] During the cooling and dehumidification process, fresh air handling units generate a large amount of condensate in their surface coolers. Most of this condensate is directly discharged, failing to be fully utilized and resulting in resource waste. For example, the fresh air purification air conditioning unit disclosed in CN201721178157.9 has an external condensate drain interface on its surface cooler, through which the condensate produced by the surface cooler is discharged. However, the condensate from fresh air handling units has a simple composition and good water quality; failing to utilize it leads to water resource waste.

[0004] A search revealed that most existing technologies do not have a tri-generation fresh air conditioning system like the one described in this invention, which utilizes the condensate water volume and uses a tri-generation main unit to provide chilled water to the fresh air unit and other air conditioning terminals. Therefore, it is necessary to provide a tri-generation fresh air conditioning system that recycles condensate water. Utility Model Content

[0005] The present invention aims to solve the technical problems existing in the prior art. The purpose of the present invention is to provide a three-generation fresh air conditioning system that recycles and utilizes condensate.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a three-generation fresh air conditioning system for condensate recovery and utilization, comprising a three-generation main unit capable of producing chilled and hot water, a fresh air unit with a surface cooler, a domestic hot water tank, and a purified water storage device. The surface cooler and the domestic hot water tank are respectively connected to the three-generation main unit through a first circulation pipeline and a second circulation pipeline. The three-generation main unit produces chilled water to provide chilled water to the surface cooler for cooling and dehumidifying the fresh air flowing through the surface cooler. At the same time, the three-generation main unit recovers the condensation heat to produce hot water for the domestic hot water tank. The condensate drain outlet of the fresh air unit is connected to the inlet of the purified water storage device through a water supply pipe. The condensate discharged from the fresh air unit is transported to the purified water storage device by its own weight or by a pump. The purified water storage device is used to purify and store the condensate. The outlet of the purified water storage device is connected to a drinking water tap.

[0007] The above technical solution differs from traditional tri-generation fresh air conditioning systems. This invention adds a purified water storage device to the condensate drain of the fresh air unit to collect the condensate generated during the cooling and dehumidification process and purify it into potable water, thus conserving water resources. This invention maximizes the collection and utilization of condensate in tri-generation fresh air conditioning systems. Besides the purified water storage device, no other complex equipment is required. This invention can be directly applied to existing tri-generation systems or used in the early stages of system construction.

[0008] In a preferred embodiment of this utility model, the domestic hot water tank is further provided with a first tap water inlet having a first water supply valve, and the first tap water inlet is connected to a tap water faucet through a water supply pipe.

[0009] The above technical solution allows for convenient water replenishment of the domestic hot water tank by opening the first water supply valve and supplying tap water into the domestic hot water tank through the water supply pipe from the first tap water inlet.

[0010] In a preferred embodiment of the present invention, the water purification and storage device is further provided with a second tap water inlet having a second water supply valve, and the second tap water inlet is connected to a tap water faucet through a water supply pipe.

[0011] According to the above technical solution, when the water volume in the purified water storage device is insufficient, a certain amount of tap water can be added from the second tap water inlet by opening the second water supply valve. After being filtered in the purified water storage device, it can also be directly consumed by the user.

[0012] In a preferred embodiment of this utility model, the water purification and storage device is equipped with a liquid level sensor for detecting the liquid level inside.

[0013] The above technical solution, by setting up a liquid level sensor, can more conveniently obtain the liquid level of the purified water storage device.

[0014] In a preferred embodiment of this utility model, the water supply pipe is connected to a condensate discharge port equipped with an electric valve, the signal output terminal of the liquid level sensor is connected to the liquid level input terminal of the controller, and the discharge control output terminal of the controller is connected to the enable terminal of the electric valve.

[0015] The above technical solution uses a liquid level sensor to monitor the liquid level of the purified water storage device. When the purified water storage device is full, the condensate generated by the fresh air unit will not enter the purified water storage device.

[0016] In another preferred embodiment of this utility model, the condensate drain outlet is connected to the domestic hot water tank via a drain pipe.

[0017] In the above technical solution, when the water purification and storage device is full, the condensate generated by the fresh air unit is sent to the domestic hot water tank for reuse.

[0018] In another preferred embodiment of this utility model, the tri-generation unit also generates hot water to provide hot water to the surface cooler through the first circulation pipeline, so as to heat up the fresh air flowing through the surface cooler.

[0019] In the above technical solution, the tri-generation unit supplies cold water to the surface cooler, which cools and dehumidifies the fresh air; the tri-generation unit supplies hot water to the surface cooler, which heats the fresh air, thus achieving the cooling and heating regulation of the fresh air.

[0020] In another preferred embodiment of the present invention, the fresh air handling unit includes a housing with an air inlet and an air outlet. Inside the housing, there is an air purifier near the air inlet, a fan near the air outlet, and a surface cooler disposed between the air purifier and the fan. The fan is used to draw outdoor air into the housing through the air inlet and discharge it from the air outlet.

[0021] In another preferred embodiment of the present invention, the casing is further provided with a reheater located downstream of the surface cooler for heating the fresh air flowing through it; and / or the casing is further provided with a humidifier located upstream of the fan for humidifying the fresh air flowing through it.

[0022] The above technical solution, by setting up a reheater, can heat the fresh air when the temperature is too low, thereby increasing the fresh air temperature; by setting up a humidifier, can humidify the fresh air when the humidity is too low, thereby increasing the fresh air humidity.

[0023] In another preferred embodiment of this utility model, the reheater is an electric heater, which directly heats the fresh air to raise its temperature; or the reheater is connected to a domestic hot water tank through a third circulation pipeline, and the domestic hot water tank provides hot water to the reheater to heat the fresh air flowing through the reheater.

[0024] The above technical solution provides two ways to implement the reheater: electric heating or hot water supply, which can be selected according to the actual situation.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1This is a schematic diagram of the structure of a three-generation fresh air conditioning system for condensate water recovery and utilization, as described in an embodiment.

[0028] The reference numerals in the accompanying drawings include: Tri-generation main unit 10, fresh air unit 20, casing 21, air inlet 21a, air outlet 21b, condensate drain outlet 21c, air purifier 22, fan 23, surface cooler 24, reheater 25, humidifier 26, domestic hot water tank 30, first tap water inlet 31, first water supply valve 32, purified water storage device 40, drinking water tap 41, second tap water inlet 42, second water supply valve 43, first circulation pipe 51, second circulation pipe 52, water supply pipe 60, water delivery pipe 70, condensate drain outlet 71, and electric valve 72. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0032] This utility model provides a three-generation fresh air conditioning system with condensate recovery and utilization (hereinafter referred to as a three-generation fresh air conditioning system), such as... Figure 1As shown, in a preferred embodiment, the tri-generation fresh air conditioning system includes a tri-generation main unit 10 capable of producing chilled and hot water, a fresh air unit 20 with a surface cooler 24, a domestic hot water tank 30, and a purified water storage device 40. The surface cooler 24 and the domestic hot water tank 30 are connected to the tri-generation main unit 10 via a first circulation pipe 51 and a second circulation pipe 52, respectively. The tri-generation main unit 10 produces chilled water to provide chilled water to the surface cooler 24 for cooling and dehumidifying the fresh air flowing through the surface cooler 24. Specifically, a pump can be used to supply the chilled water produced by the tri-generation main unit 10 to the surface cooler 24 through the first circulation pipe 51. Simultaneously, the tri-generation main unit 10 recovers condensation heat (generated by the condenser of the air conditioning refrigerant system inside the tri-generation unit 10) to produce hot water and delivers it to the domestic hot water tank 30. For example, a pump can be used to extract water from the domestic hot water tank 30 to the tri-generation main unit 10 for heat exchange to produce hot water; this is existing technology and will not be described in detail here.

[0033] The condensate drain outlet 21c of the fresh air handling unit 20 is connected to the inlet of the purified water storage device 40 via a water supply pipe 70. The condensate discharged from the fresh air handling unit 20 is transported to the purified water storage device 40 by its own weight or by a pump. The purified water storage device 40 is used to purify and store the condensate. The outlet of the purified water storage device 40 is connected to a drinking water tap 41. The purified water storage device 40 integrates a water pump, a water purifier, and a water storage tank. The water pump transports the condensate to the water purifier for purification, and the purified water enters the water storage tank for storage. The purified water storage device 40 can adopt existing technology.

[0034] During summer or transitional seasons, the combined cooling, heating, and power (CCHP) system generates chilled water and domestic hot water, respectively, for the surface cooler 24 of the fresh air handling unit 20 and the domestic hot water tank 30. The water in the domestic hot water tank 30 can be directly supplied to the end users. During the cooling and dehumidification operation of the fresh air handling unit 20, the CCHP system 10 introduces chilled water into the surface cooler 24 through the first circulation pipe 51 to cool and dehumidify the fresh air flowing through the surface cooler 24. The condensate generated by the fresh air passing through the surface cooler 24 is discharged from the condensate drain outlet 21c and transported to the purified water storage device 40 through the water supply pipe 70. After purification by the purified water storage device 40, it is made into pure drinking water and stored. When needed, users can directly drink the water by opening the drinking water tap 41.

[0035] It should be noted that, in addition to supplying chilled water to the fresh air handling unit 20, the tri-generation unit 10 can also supply chilled water to other air conditioning terminals (such as fan coil units or radiant panels).

[0036] like Figure 1As shown, in this utility model, the domestic hot water tank 30 is also provided with a first tap water inlet 31 having a first water supply valve 32. The first tap water inlet 31 is connected to a tap water faucet through a water supply pipe 60. When the water in the domestic hot water tank 30 is insufficient, the first water supply valve 32 is opened, and tap water is added to the domestic hot water tank 30 through the water supply pipe 60 from the first tap water inlet 31.

[0037] like Figure 1 As shown, in another preferred embodiment, the purified water storage device 40 is further provided with a second tap water inlet 42 having a second water supply valve 43. The second tap water inlet 42 is connected to a tap water faucet via a water supply pipe 60. Since the operation of the fresh air unit 20 is not necessarily continuous, when the water level in the purified water storage device 40 is insufficient, the second water supply valve 43 is opened, and a certain amount of tap water is added to the purified water storage device 40 through the water supply pipe 60 from the second tap water inlet 42 to meet the user's need for drinking water at any time.

[0038] like Figure 1 As shown, in another preferred embodiment, the purified water storage device 40 is equipped with a level sensor (not shown) for detecting the liquid level inside, making it easy to check the liquid level of the purified water storage device 40. More preferably, the water supply pipe 70 is connected to a condensate drain port 71 equipped with an electric valve 72. The signal output terminal of the level sensor is connected to the level input terminal of the controller, and the discharge control output terminal of the controller is connected to the enable terminal of the electric valve 72. For example, the controller has a comparator and a high liquid level threshold memory. The signal output terminal of the level sensor is connected to the first input terminal of the comparator, the output terminal of the high liquid level threshold memory is connected to the second input terminal of the comparator, and the output terminal of the comparator is connected to the enable terminal of the electric valve 72.

[0039] Normally, the electric valve 72 is closed. When the level sensor detects that the water in the purified water storage device 40 is full, it transmits a signal to the controller. The condensate produced by the fresh air unit 20 will not enter the purified water storage device 40. Instead, it will be discharged directly by opening the electric valve 72 or connected to the domestic hot water tank 30 through the discharge pipe for reuse (the condensate has a simple composition and good water quality, meeting the water quality requirements for domestic hot water).

[0040] like Figure 1As shown, in this utility model, the fresh air handling unit 20 includes a housing 21 with an air inlet 21a and an air outlet 21b. For example, the air inlet 21a is located on the left side of the housing 21, and the air outlet 21b is located on the right side of the housing 21. Inside the housing 21, there is an air purifier 22 near the air inlet 21a, a fan 23 near the air outlet 21b, and a surface cooler 24 located between the air purifier 22 and the fan 23. The fan 23 is used to draw outdoor air into the housing 21 through the air inlet 21a and exhaust it through the air outlet 21b. The air purifier 22 purifies the fresh air entering the housing 21 (e.g., by filtering and disinfecting). This is prior art, and its structure and principle will not be described in detail here.

[0041] In another preferred embodiment, the combined cooling, heating, and power (CCHP) unit 10 also prepares hot water to supply hot water to the surface cooler 24 through the first circulation pipe 51, thereby warming the fresh air flowing through the surface cooler 24. For example, in winter, hot water is introduced into the surface cooler 24 to warm the fresh air, and at this time, the surface cooler 24 of the fresh air handling unit 20 does not produce condensate. Specifically, the CCHP unit 10 can switch between cold water and hot water entering the first circulation pipe 51 by setting the operating mode, which is existing technology and will not be described in detail here.

[0042] like Figure 1 As shown, in another preferred embodiment, the casing 21 is further provided with a reheater 25 located downstream of the surface cooler 24 to heat the fresh air flowing through it. When the fresh air temperature is too low, it can be heated by the reheater 25 to increase the fresh air temperature. The reheater 25 can be an electric heater that directly heats the fresh air to raise its temperature; or the reheater 25 can be connected to a domestic hot water tank 30 via a third circulation pipe, with the domestic hot water tank 30 providing hot water to the reheater 25 to heat the fresh air flowing through it.

[0043] like Figure 1 As shown, more preferably, the casing 21 is further provided with a humidifier 26 located upstream of the fan 23 to humidify the fresh air flowing through it, and the humidifier 26 is located downstream of the reheater 25. In winter, when the humidity of the fresh air is too low (the outdoor fresh air humidity is low, or the humidity of the fresh air is too low after the fresh air has been heated), the humidifier 26 can be used to humidify the fresh air to increase the humidity.

[0044] In the description of this specification, the references to terms such as "preferred embodiment," "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A triple supply fresh air air conditioning system for condensate water recycling, characterized in that, The triple supply host capable of preparing cold water and hot water, the fresh air unit with the surface cooler, the domestic hot water tank, and the purification water storage device are connected with the triple supply host through the first circulation pipeline and the second circulation pipeline respectively, the triple supply host prepares cold water for the surface cooler to cool and dehumidify the fresh air flowing through the surface cooler, and the triple supply host recycles the condensation heat to prepare hot water into the domestic hot water tank; The condensate water outlet of the fresh air unit is connected with the inlet of the purification water storage device through the water delivery pipeline, the condensate water discharged by the fresh air unit is transported into the purification water storage device by gravity or a pump, the purification water storage device is used for purifying and storing the condensate water, and the water outlet of the purification water storage device is connected with a drinking water outlet faucet.

2. The triple-generation fresh air air-conditioning system with condensate water recycling according to claim 1, characterized in that, The domestic hot water tank is also provided with a first tap water supplementing port with a first tap water supplementing valve, and the first tap water supplementing port is connected with a tap water faucet through a supplementing pipeline.

3. The triple-generation fresh air air-conditioning system of claim 1, wherein, The purification water storage device is also provided with a second tap water supplementing port with a second tap water supplementing valve, and the second tap water supplementing port is connected with a tap water faucet through a supplementing pipeline.

4. The triple-generation fresh air air-conditioning system with condensate water recycling according to claim 1, characterized in that, The purification water storage device is provided with a liquid level sensor for detecting the liquid level in the purification water storage device.

5. The triple-generation fresh air air-conditioning system of claim 4, wherein, The water delivery pipeline is connected with a condensate water discharge port provided with an electric valve, a signal output end of the liquid level sensor is connected with a liquid level input end of a controller, and a discharge control output end of the controller is connected with an enable end of the electric valve.

6. The triple-generation fresh air air-conditioning system of claim 5, wherein, The condensate water discharge port is connected with the domestic hot water tank through a discharge pipeline.

7. The triple-generation fresh air air conditioning system with condensate water recycling according to any one of claims 1-6, characterized in that, The triple supply host also prepares hot water to provide hot water for the surface cooler through the first circulation pipeline to heat the fresh air flowing through the surface cooler.

8. The triple-generation fresh air air conditioning system with condensate water recycling according to any one of claims 1-6, characterized in that, The fresh air unit comprises a casing with an air inlet and an air outlet, the casing is provided with an air purifier close to the air inlet, a fan close to the air outlet, and a surface cooler arranged between the air purifier and the fan, and the fan is used for sucking outdoor air into the casing through the air inlet and discharging the outdoor air from the air outlet.

9. The triple-generation fresh air air conditioning system of claim 8, wherein, The casing is also provided with a reheater downstream of the surface cooler, the reheater is used for heating the fresh air flowing therethrough; And / or the casing is also provided with a humidifier upstream of the fan, the humidifier is used for humidifying the fresh air flowing therethrough.

10. The triple-generation fresh air air conditioning system of claim 9, wherein, The reheater is an electric heater, the fresh air is directly heated by the electric heater to heat the fresh air; Or the reheater is connected with the domestic hot water tank through a third circulation pipeline, the domestic hot water tank provides hot water for the reheater to heat and warm the fresh air flowing through the reheater.

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