A heat energy recovery system of an air-cooled air compressor
By using a heat recovery system in an air-cooled air compressor, heat from the exhaust pipe is recovered through a plate heat exchanger and applied to the heating section of the air conditioning unit and hot water for showering and handwashing. This solves the problems of heat waste and high energy consumption, achieving the dual effects of energy saving, consumption reduction, and hot water supply.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU GOLDENGREEN TECH LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-06-02
AI Technical Summary
Air-cooled air compressors release heat directly into the atmosphere through their exhaust pipes, resulting in a waste of thermal energy. Combined air conditioning units require electric heating in the heating section during winter, leading to high energy consumption. Additionally, hot water supply for showering and handwashing requires extra equipment.
Design a heat recovery system for an air-cooled air compressor. The system recovers heat from the exhaust pipe through a plate heat exchanger and applies it to the heating section of a combined air conditioning unit and the supply of hot water for bathing and handwashing. The system utilizes a circulating pipeline of tap water and coolant to achieve the recycling of heat.
It enables heat recovery and utilization, reduces the energy consumption of the heating section of the combined air conditioning unit, eliminates the need for electric heating, and solves the problem of hot water supply for bathing and hand washing, thus saving electricity consumption.
Smart Images
Figure CN224315117U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air compressor heat energy recovery, specifically to a heat energy recovery system for an air-cooled air compressor. Background Technology
[0002] An air compressor is a device used to compress gas. Generally, air compressors have two main cooling methods: water-cooled and air-cooled. Air-cooled air compressors use a fan to exhaust the heat generated by the compressor into an exhaust duct, which then releases the heat into the atmosphere. However, directly releasing the hot air from the exhaust duct into the atmosphere would waste heat energy; therefore, the heat in the exhaust duct needs to be cooled.
[0003] Furthermore, modular air handling units (MLUs) are air handling equipment assembled from various air handling functional sections, suitable for air conditioning systems with resistance greater than 100 Pa. MLUs have a heating section; when hot air needs to be output (such as in winter), this section requires electric heating, resulting in higher energy consumption. If the heat from the exhaust ducts could be recovered and applied to the heating section of the MLU, it would achieve heat recovery and energy saving.
[0004] Therefore, it is necessary to design a solution that can recover and utilize the heat in the exhaust duct to achieve energy saving and consumption reduction. Summary of the Invention
[0005] To recover and utilize heat from the exhaust duct and achieve energy saving and consumption reduction, this utility model provides a heat recovery system for an air-cooled air compressor, comprising: an exhaust duct connected to the exhaust port of the air-cooled air compressor body; a second plate heat exchanger installed in the exhaust duct; a first water pipe connected to the exhaust duct and connected to the input end of the second plate heat exchanger; a hot water main pipe connected to the exhaust duct and connected to the output end of the second plate heat exchanger; a third plate heat exchanger installed in the heating section of the combined air conditioning unit, with its input end connected to the hot water main pipe via a first hot water branch pipe; and a cold water pipe connected to the heating section of the combined air conditioning unit and connected to the output end of the third plate heat exchanger.
[0006] Preferably, the air-cooled air compressor body is provided with: a coolant circulation pipeline, a compressor connected in series with the coolant circulation pipeline, a first plate heat exchanger connected in series with the coolant circulation pipeline and located at the exhaust port, and a fan located inside the first plate heat exchanger and facing the first plate heat exchanger and the exhaust port.
[0007] Preferably, it also includes: a bath water supply pipe and a handwashing water supply pipe connected to the main hot water pipe via a second hot water branch pipe.
[0008] Preferably, the water supply pipe for showering and the water supply pipe for washing hands are also connected to a cold water pipe.
[0009] Preferably, the water supply pipe for showering and the water supply pipe for washing hands are also connected to a second tap water pipe.
[0010] Preferably, a first valve is provided on the first hot water branch pipe.
[0011] Preferably, a second valve is provided on the second hot water branch pipe.
[0012] Preferably, the cold water pipe is equipped with a third valve.
[0013] Preferably, a fourth valve is provided on the second water pipe.
[0014] Preferably, the first valve, the second valve, and the fourth valve are all flow regulating valves.
[0015] The advantages and beneficial effects of this utility model are as follows: It provides a heat recovery system for an air-cooled air compressor, which can recover heat from the exhaust pipe and apply the recovered heat to the heating section of the combined air conditioning unit and to supply hot water for bathing and hand washing, thereby achieving the effects of heat recovery and utilization, energy saving and consumption reduction.
[0016] This utility model's heat recovery system can fully recover the heat energy of an air-cooled air compressor and solve the problem of high energy consumption in winter due to the need for electric heating in the heating section of a combined air conditioning unit. It also solves the problem of supplying hot water for showering and handwashing, saving electricity. After using this heat recovery system, the heating section of the combined air conditioning unit does not need electric heating in winter, and it also eliminates the need for a separate water heater for showering and handwashing. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the present invention. Detailed Implementation
[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.
[0019] The specific technical solution of this utility model is as follows:
[0020] like Figure 1As shown, this utility model provides a heat recovery system for an air-cooled air compressor, including: an air-cooled air compressor body 1 with an exhaust port 11, and an exhaust pipe 2 externally connected to the exhaust port 11; it also includes: a coolant circulation pipe 12 disposed inside the air-cooled air compressor body 1, a compressor 13 connected in series to the coolant circulation pipe 12, a first plate heat exchanger 14 connected in series to the coolant circulation pipe 12 and located at the exhaust port 11, and a fan 15 disposed inside the first plate heat exchanger 14 and facing the first plate heat exchanger 14 and the exhaust port 11; it also includes: a second plate heat exchanger 21 disposed in the exhaust pipe 2, a first water pipe 41 externally connected to the exhaust pipe 2 and communicating with the input end of the second plate heat exchanger 21, and a water pipe externally connected to the exhaust pipe 2 and communicating with the output end of the second plate heat exchanger 21. The system includes a hot water main pipe 42, a third plate heat exchanger 31 located in the heating section 3 of the combined air conditioning unit and connected to the hot water main pipe 42 via a first hot water branch pipe 43 at its input end, a cold water pipe 44 externally connected to the heating section 3 of the combined air conditioning unit and connected to the output end of the third plate heat exchanger 31, and a shower water supply pipe 47 and a handwashing water supply pipe 48 connected to the hot water main pipe 42, the cold water pipe 44, and the second tap water pipe 46 via a second hot water branch pipe 45; a first valve 51 is provided on the first hot water branch pipe 43; a second valve 52 is provided on the second hot water branch pipe 45; a third valve 53 is provided on the cold water pipe 44; and a fourth valve 54 is provided on the second tap water pipe 46; all three valves (first, second, and fourth) are flow regulating valves.
[0021] The working principle of the heat recovery system for the air-cooled air compressor of this utility model includes:
[0022] When the compressor 13 of the air-cooled air compressor is working, the coolant in the coolant circulation pipeline 12 circulates through the compressor 13 and the first plate heat exchanger 14. When the coolant flows through the compressor 13, it absorbs the heat generated by the compressor 13 and its temperature rises. When the coolant flows through the first plate heat exchanger 14, it is cooled by the air blown by the fan 15. The air blown by the fan 15 flows through the first plate heat exchanger 14 and absorbs the heat of the coolant and its temperature rises. The heated air enters the exhaust pipe 2 through the exhaust port 11 and is finally discharged into the atmosphere through the exhaust pipe 2.
[0023] When hot air is discharged from the exhaust duct 2, in order to recover and utilize the heat in the exhaust duct 2, the first tap water pipe 41 supplies tap water to the second plate heat exchanger 21 in the exhaust duct 2. When the tap water supplied by the first tap water pipe 41 flows through the second plate heat exchanger 21, it absorbs the heat of the hot air in the exhaust duct 2 and heats up. The heated hot water enters the hot water main pipe 42 from the output end of the second plate heat exchanger 21. Then, by controlling the opening and closing of the first valve 51 on the first hot water branch pipe 43 and the second valve 52 on the second hot water branch pipe 45, the hot water in the hot water main pipe 42 enters the first hot water branch pipe 43 and / or the second hot water branch pipe 45. Furthermore, by controlling the opening and closing of the third valve 53 on the cold water pipe 44 and the fourth valve 54 on the second tap water pipe 46, the water supply to the bathing water supply pipe 47 and the handwashing water supply pipe 48 is realized.
[0024] Specifically, when hot water is supplied by the main hot water pipe 42, the opening and closing control of the first valve 51 on the first hot water branch pipe 43, the second valve 52 on the second hot water branch pipe 45, the third valve 53 on the cold water pipe 44, and the fourth valve 54 on the second tap water pipe 46 includes the following methods:
[0025] 1) When heating section 3 of the combined air conditioning unit does not require heating;
[0026] Close the first valve 51 on the first hot water branch pipe 43, close the third valve 53 on the cold water pipe 44, open the second valve 52 on the second hot water branch pipe 45, and close the fourth valve 54 on the second tap water pipe 46; the hot water supplied by the hot water main pipe 42 enters the bath water supply pipe 47 and the hand washing water supply pipe 48 through the second hot water branch pipe 45 so as to output hot water for hand washing and bathing.
[0027] In addition, when the second hot water branch pipe 45 supplies hot water to the bathing water supply pipe 47 and the handwashing water supply pipe 48, the fourth valve 54 on the second tap water pipe 46 can be opened to mix the tap water supplied by the second tap water pipe 46 with the hot water supplied by the second hot water branch pipe 45, so as to adjust the water temperature of the hot water in the bathing water supply pipe 47 and the handwashing water supply pipe 48 (specifically, the water temperature of the hot water in the bathing water supply pipe 47 and the handwashing water supply pipe 48 can be adjusted by adjusting the flow rate of the second valve 52 on the second hot water branch pipe 45 and the fourth valve 54 on the second tap water pipe 46).
[0028] 2) When the heating section 3 of the combined air conditioning unit needs to be heated;
[0029] Open the first valve 51 on the first hot water branch pipe 43, open the third valve 53 on the cold water pipe 44, open the second valve 52 on the second hot water branch pipe 45, and close the fourth valve 54 on the second tap water pipe 46; the hot water supplied by the hot water main pipe 42 enters the first hot water branch pipe 43 and the second hot water branch pipe 45.
[0030] Then, the first hot water branch pipe 43 supplies hot water to the third plate heat exchanger 31 of the heating section 3 of the combined air conditioning unit. When the airflow in the combined air conditioning unit passes through the heating section, it will absorb the heat of the hot water in the third plate heat exchanger 31 and rise in temperature, thereby achieving the heating and temperature rise of the heating section 3 of the combined air conditioning unit.
[0031] The hot water flowing through the third plate heat exchanger 31 is cooled down by heat absorption and then enters the cold water pipe 44. The cooled water is then output from the cold water pipe 44 and mixed with the hot water output from the second hot water branch pipe 45. The mixed hot water is supplied to the bathing water supply pipe 47 and the hand washing water supply pipe 48 to provide hot water for hand washing and bathing (specifically, the water temperature in the bathing water supply pipe 47 and the hand washing water supply pipe 48 can be adjusted by adjusting the flow rate of the first valve 51 on the first hot water branch pipe 43 and the second valve 52 on the second hot water branch pipe 45).
[0032] As can be seen from the above, the heat recovery system of the air-cooled air compressor of this utility model can recover the heat in the exhaust pipe 2 and apply the recovered heat to the heating section 3 of the combined air conditioning unit for heating and supplying hot water for bathing and hand washing, so as to achieve the effects of heat recovery and utilization, energy saving and consumption reduction.
[0033] This utility model's heat recovery system can fully recover the heat energy of an air-cooled air compressor and solve the problem of high energy consumption in the heating section 3 of a combined air conditioning unit during winter due to the need for electric heating. It also solves the problem of supplying hot water for showering and handwashing, saving electricity. After using this heat recovery system, the heating section 3 of the combined air conditioning unit does not need electric heating in winter, and it also eliminates the need for a separate water heater for supplying hot water for showering and handwashing.
[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A heat recovery system for an air-cooled air compressor, characterized in that, include: An exhaust pipe connected to the exhaust port of the air-cooled air compressor body; a second plate heat exchanger installed in the exhaust pipe; a first tap water pipe connected to the exhaust pipe and connected to the input end of the second plate heat exchanger; a hot water main pipe connected to the exhaust pipe and connected to the output end of the second plate heat exchanger; a third plate heat exchanger installed in the heating section of the combined air conditioning unit, with its input end connected to the hot water main pipe via a first hot water branch pipe; and a cold water pipe connected to the heating section of the combined air conditioning unit and connected to the output end of the third plate heat exchanger.
2. The heat recovery system for an air-cooled air compressor according to claim 1, characterized in that, The air-cooled air compressor body is internally equipped with: a coolant circulation pipeline, a compressor connected in series with the coolant circulation pipeline, a first plate heat exchanger connected in series with the coolant circulation pipeline and located at the exhaust port, and a fan located inside the first plate heat exchanger and facing the first plate heat exchanger and the exhaust port.
3. The heat recovery system for an air-cooled air compressor according to claim 1, characterized in that, Also includes: The water supply pipes for showering and washing hands are connected to the main hot water pipe via the second hot water branch pipe.
4. The heat recovery system for an air-cooled air compressor according to claim 1, characterized in that, The water supply pipes for showering and washing hands are also connected to cold water pipes.
5. The heat recovery system for an air-cooled air compressor according to claim 1, characterized in that, The water supply pipes for showering and washing hands are also connected to a second tap water pipe.
6. The heat recovery system for an air-cooled air compressor according to claim 1, characterized in that, The first hot water branch pipe is equipped with a first valve.
7. The heat recovery system for an air-cooled air compressor according to claim 1, characterized in that, A second valve is installed on the second hot water branch pipe.
8. The heat recovery system for an air-cooled air compressor according to claim 1, characterized in that, A third valve is installed on the cold water pipe.
9. The heat recovery system for an air-cooled air compressor according to claim 1, characterized in that, The second water pipe is equipped with a fourth valve.
10. The heat recovery system for an air-cooled air compressor according to claim 1, characterized in that, The first valve, the second valve, and the fourth valve are all flow regulating valves.