CN116379604A - Air source heat pump heat recovery system device and operation method - Google Patents

Abstract

The invention relates to an air source heat pump heat recovery system device and an operation method, which includes more than one air source heat pump, at least one pressurized hot water tank, a heat exchange circulating water pump device, a gas boiler and a boiler hot water circulating pump. The air source heat pump is used to collect a large amount of heat energy and convert it into energy to heat the tap water. After the temperature of the tap water is heated, it is sent to the pressurized hot water tank through the heat exchange outlet main pipe. Using the heat exchange circulating water pump device to continuously pump the water in the pressurized hot water tank to the air source heat pump for continuous circulation heating; then transport the heated water in the pressurized hot water tank to the gas boiler for secondary heating. Hot water preparation can effectively save a lot of gas costs. At the same time, a large amount of hot air with high latent heat generated by the existing store floor exhaust fans and kitchen dishwashers and pot washing machines is reused.

Description

Air source heat pump heat recovery system device and operation method

technical field

The invention belongs to the technical field of heat recovery equipment in the catering industry, and in particular relates to a hot air/ground exhaust air source heat pump heat recovery system device and an operation method.

Background technique

A large amount of hot air with high latent heat generated by the existing store floor exhaust fans and back kitchen dishwashers and pot washing machines is discharged outside, and the huge heat energy is not well collected and utilized, resulting in a waste of heat energy;

The existing store hot water supply system is designed to use gas water heaters or electric water heaters. Because no relevant energy collection and conversion measures have been taken, the energy consumption of gas and electricity during store operation is huge, resulting in the gas and electricity bills paid by the store. If it is too high, the gas consumption will account for a high proportion of the total store expenses, and the profit margin will be greatly reduced.

Contents of the invention

There is a large demand for hot water in the store. In order to be able to reuse a large amount of high latent heat hot air generated when the exhaust fan in the store and the kitchen dishwasher and pot washing machine are working, a large amount of high latent heat hot air energy is collected and converted to clean the water. Heat exchange, raising the temperature of the water. In this way, the boiler gas and electricity costs incurred by stores can be reduced.

For this reason, in order to overcome the deficiencies of the existing related technologies, the purpose of the first aspect of the present invention is to provide an air source heat pump heat recovery system device, which includes more than one air source heat pump, at least one pressurized hot water tank, Heat exchange circulating water pump device, gas boiler and boiler hot water circulating pump,

It also includes the heat exchange water inlet main pipe, the heat exchange water outlet main pipe, the heat exchange water inlet branch pipe and the heat exchange water outlet branch pipe, among which;

Each air source heat pump communicates with the heat exchange water inlet main pipe through a heat exchange water inlet branch pipe, and the other end of the heat exchange water inlet pipe directly or indirectly communicates with the pressurized hot water tank;

Each air source heat pump communicates with the heat exchange outlet main pipe through a heat exchange outlet branch pipe, and the other end of the heat exchange outlet main pipe directly or indirectly communicates with the pressurized hot water tank;

The heat exchange circulating water pump device is installed on the heat exchange inlet main pipe;

The heat exchange circulating water pump device includes a main circulation device and a backup circulation device; wherein

The main circulation device includes a first check valve, a first heat exchange circulating water pump, and a first drain valve arranged in series on the heat exchange water inlet main pipe;

The standby circulation device includes a second check valve, a second heat exchange circulating water pump, and a second drain valve; the second check valve, the second heat exchange circulating water pump, and the second drain valve depend on After this series connection, it is connected in parallel as a bypass on one side of the main circulation device;

It also includes a hot water delivery pipe, one end of the hot water delivery pipe communicates with the pressurized hot water tank; the other end of the hot water delivery pipe directly or indirectly communicates with the boiler hot water circulation pump.

Further, the heat exchange water inlet branch pipe is provided with a reducing head, a metal hose, a filter, a pressure gauge, a thermometer and a normally open valve; wherein the reducing head, the metal hose, the filter The device, the pressure gauge, the thermometer and the normally open valve are connected in series accordingly;

The heat exchange outlet branch pipe is provided with a reducing head, a metal hose, a water flow switch, a pressure gauge, a thermometer and a normally open valve; wherein the reducing head, the metal hose, the water flow switch, the The pressure gauge, the thermometer and the normally open valve are thus connected in series.

Further, the pressurized hot water tank is also connected with a tap water supply pipeline; the tap water supply pipeline includes a tap water supply pipeline, a main water supply pipeline and a backup water supply pipeline, wherein

The main water supply pipeline includes a main booster pump arranged on the tap water supply pipe and a normally open valve connected in series on both sides of the main booster pump;

The standby water supply pipeline is connected in parallel to the main water supply pipeline as a bypass;

The backup water supply pipeline includes a backup booster pump and a normally closed valve connected in series to both sides of the backup booster pump.

Further, the tap water supply pipe between the tap water supply pipeline and the pressurized hot water tank is also provided with a normally open valve and a third check valve, and the normally open valve and the third check valve serial connection.

Further, the hot water delivery pipe is provided with a normally open valve and a fourth check valve.

Further, a temperature-sensing probe for detecting water temperature is arranged in the pressurized hot water tank.

Further, normally open valves are respectively installed at both ends of the main circulation device on the heat exchange inlet main pipe, one of which is connected in series with the first check valve, and the other normally open valve is connected with the first non-return valve. The first drain valve is connected in series;

Both ends of the standby circulation device are equipped with normally open valves, one of which is connected in series with the second check valve, and the other normally open valve is connected in series with the second drain valve.

Further, it also includes a ground exhaust air duct for transporting hot air, one end of the ground exhaust air duct is directly or indirectly connected to the air source heat pump, and the other end of the ground exhaust air duct is arranged at the exhaust at least one of the air blower, the dishwasher fan and the pot washer fan.

The second aspect of the present invention also provides a method for operating an air source heat pump heat recovery system device, the method uses the above-mentioned air source heat pump heat recovery system device,

The operation method of the air source heat pump heat recovery system device in summer is as follows:

S1. More than one air source heat pump directly absorbs the high-temperature air of 30-35 degrees Celsius in the air, and uses the air source heat pump to directly heat the tap water that enters the air source heat pump through the pressurized hot water tank through the heat exchange inlet pipe.

S2. The water in the pressurized hot water tank is sent to the air source heat pump for heating through the heat exchange circulating water pump device. The water temperature of the tap water is heated from 10-15 degrees Celsius in summer to about 55 degrees Celsius, and the heated tap water passes through The heat exchange outlet main pipe is backflow stored in the pressurized hot water tank;

S3. The tap water at about 55 degrees Celsius in the pressurized hot water tank is supplied to the gas boiler through the hot water delivery pipe for secondary heating to about 80 degrees Celsius, and provided to the back kitchen of the store.

The second aspect of the present invention also provides a method for operating an air source heat pump heat recovery system device, the method uses the above-mentioned air source heat pump heat recovery system device,

The operation method of the air source heat pump heat recovery system device in spring/autumn/winter is as follows:

S1. The ground exhaust air generated by at least one of the exhaust fan, the dishwasher fan and the pot washing machine fan is delivered to the air source heat pump through the ground exhaust air pipe;

S2. More than one air source heat pump absorbs the hot air at 8-12 degrees Celsius conveyed by the ground exhaust duct, and uses the air source heat pump to directly pass the pressurized hot water tank into the air source heat pump through the heat exchange inlet main pipe Tap water for heating.

S2. The water in the pressurized hot water tank is sent to the air source heat pump for heating through the heat exchange circulating water pump device. The water temperature of the tap water is heated from 6-8 degrees Celsius in spring/autumn/winter to about 55 degrees Celsius. The final tap water is refluxed and stored in the pressurized hot water tank through the heat exchange outlet water main pipe;

S3. The tap water at about 55 degrees Celsius in the pressurized hot water tank is supplied to the gas boiler through the hot water delivery pipe for secondary heating to about 80 degrees Celsius, and provided to the back kitchen of the store.

The present invention adopts the above technical scheme, utilizes the air source heat pump to collect a large amount of heat energy and converts it into energy to heat the tap water, and after the temperature of the tap water is heated, it is transported to the pressurized hot water tank through the heat exchange outlet main pipe. Using the heat exchange circulating water pump device to continuously pump the water in the pressurized hot water tank to the air source heat pump for continuous circulation heating; then transport the heated water in the pressurized hot water tank to the gas boiler for secondary heating. Hot water preparation can effectively save a lot of gas costs. At the same time, a large amount of hot air with high latent heat generated by the existing store floor exhaust fans and kitchen dishwashers and pot washing machines has been reused.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of the structure of the air source heat pump heat recovery system device of the present invention;

Fig. 2 is a schematic diagram of the connection structure of the air source heat pump hot water room of the present invention.

In the figure: 1. Air source heat pump; 2. Pressurized hot water tank; 3. Gas boiler; 4. Boiler hot water circulation pump; Water branch pipe; 8. Heat exchange outlet water branch pipe; 9. The first check valve; 10. The first heat exchange circulating water pump; 11. The first drain valve; 12. The second check valve; 13. The second exchange valve 14. Second drain valve; 15. Hot water delivery pipe; 16. Reducer head; 17. Metal hose; 18. Filter; 19. Thermometer; 20. Normally open valve; 21. Water flow switch 22. Pressure gauge; 23. Normally closed valve; 24. Main booster pump; 25. Backup booster pump; 26. Third check valve; 27. Fourth check valve; 28. Temperature probe.

Detailed ways

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of means consistent with aspects of the invention as recited in the appended claims.

As shown in Figures 1 and 2, this embodiment provides a heat recovery system device for an air source heat pump 1, including more than one air source heat pump 1, at least one pressurized hot water tank 2, a heat exchange circulating water pump device, Gas boiler 3 and boiler hot water circulation pump 4,

It also includes a heat exchange water inlet main pipe 5, a heat exchange water outlet main pipe 6, a heat exchange water inlet branch pipe 7 and a heat exchange water outlet branch pipe 8, wherein;

Each air source heat pump 1 communicates with the heat exchange water inlet main pipe 5 through the heat exchange water inlet branch pipe 7, and the other end of the heat exchange water inlet pipe 5 is directly or indirectly connected to the pressurized hot water tank 2 Connected;

Each air source heat pump 1 communicates with the heat exchange outlet main pipe 6 through the heat exchange water outlet branch pipe 8, and the other end of the heat exchange outlet water main pipe 6 communicates with the pressurized hot water tank 2 directly or indirectly;

The heat exchange circulating water pump device is installed on the heat exchange water inlet main pipe 5;

The heat exchange circulating water pump device includes a main circulation device and a backup circulation device; wherein

The main circulation device includes a first check valve 9, a first heat exchange circulating water pump 10 and a first drain valve 11 arranged in series on the heat exchange water inlet main pipe 5;

The standby circulation device includes a second check valve 12, a second heat exchange circulating water pump 13 and a second drain valve 14;

The second check valve 12, the second heat exchange circulating water pump 13 and the second drain valve 14 are connected in series and connected in parallel as a bypass to one side of the main circulation device;

It needs to be added that both the main circulation device and the standby circulation device are open under normal working conditions, and a normally open valve 20 is also installed on both sides of the first heat exchange circulating water pump 10 in the main circulation device; Both sides of the two heat exchange circulating water pumps 13 are also equipped with normally open valves 20 .

It also includes a hot water delivery pipe 15, one end of the hot water delivery pipe 15 communicates with the pressurized hot water tank 2; the other end of the hot water delivery pipe 15 directly or indirectly communicates with the boiler hot water circulation pump 4 on.

As a preferred embodiment, the heat exchange water inlet branch pipe 7 in this embodiment is provided with a reducing head 16, a metal hose 17, a filter 18, a pressure gauge 22, a thermometer 19 and a normally open valve 20; Wherein the reducing head 16, the metal hose 17, the filter 18, the pressure gauge 22, the thermometer 19 and the normally open valve 20 are connected in series;

The heat exchange outlet branch pipe 8 is provided with a reducing head 16, a metal hose 17, a water flow switch 21, a pressure gauge 22, a thermometer 19 and a normally open valve 20; wherein the reducing head 16, the metal hose 17. The water flow switch 21 , the pressure gauge 22 , the thermometer 19 and the normally open valve 20 are connected in series.

As shown in Figure 2, as a preferred implementation, the pressurized hot water tank 2 in this embodiment is also connected with a tap water supply pipeline; the tap water supply pipeline includes a tap water supply pipe, a main water supply pipeline and backup water supply lines, where

The main water supply pipeline includes a main booster pump 24 arranged on the tap water supply pipe and a normally open valve 20 connected in series on both sides of the main booster pump 24;

The standby water supply pipeline is connected in parallel to the main water supply pipeline as a bypass;

The backup water supply pipeline includes a backup booster pump 25 and a normally closed valve 23 connected in series to both sides of the backup booster pump 25 .

As a preferred embodiment, in this embodiment, the tap water supply pipe between the tap water supply pipeline and the pressurized hot water tank 2 is also provided with a normally open valve 20 and a third check valve 26, so The normally open valve 20 and the third check valve 26 are connected in series.

It needs to be added that, as shown in Figure 2, a main circulation pump and a backup circulation pump are also provided between the pressurized hot water tank 2 and the gas boiler 3, and normally open valves are connected in series on both sides of the main circulation pump shown. , There are normally closed valves connected in series on both sides of the backup circulating pump.

As a preferred implementation manner, in this embodiment, the hot water delivery pipe 15 is provided with a normally open valve 20 and a fourth check valve 27 .

As a preferred implementation, the pressurized hot water tank 2 in this embodiment is provided with a temperature-sensing probe 28 for detecting the water temperature.

As a preferred implementation, this embodiment also includes a ground exhaust air duct for transporting hot air. Usually, the ground exhaust air duct is inserted into the iron static pressure box, and one end of the ground exhaust air duct directly or indirectly is in communication with the air source heat pump 1, and the other end of the ground exhaust air pipe is arranged at at least one of the exhaust fan, the dishwasher fan and the pot washer fan.

As a preferred implementation, this embodiment also provides a method for operating an air source heat pump heat recovery system device, which uses the above-mentioned air source heat pump heat recovery system device,

The operation method of the air source heat pump heat recovery system device in summer is as follows:

S1. More than one air source heat pump directly absorbs the high-temperature air of 30-35 degrees Celsius in the air, and uses the air source heat pump to directly heat the tap water that enters the air source heat pump through the pressurized hot water tank through the heat exchange inlet pipe.

S2. The water in the pressurized hot water tank is sent to the air source heat pump for heating through the heat exchange circulating water pump device. The water temperature of the tap water is heated from 10-15 degrees Celsius in summer to about 55 degrees Celsius, and the heated tap water passes through The heat exchange outlet main pipe is backflow stored in the pressurized hot water tank;

S3. The tap water at about 55 degrees Celsius in the pressurized hot water tank is supplied to the gas boiler through the hot water delivery pipe for secondary heating to about 80 degrees Celsius, and provided to the back kitchen of the store.

As a preferred implementation, this embodiment also provides a method for operating an air source heat pump heat recovery system device, which is characterized in that: the method uses the above-mentioned air source heat pump heat recovery system device,

The operation method of the air source heat pump heat recovery system device in spring/autumn/winter is as follows:

S1. The ground exhaust air generated by at least one of the exhaust fan, the dishwasher fan and the pot washing machine fan is delivered to the air source heat pump through the ground exhaust air pipe;

S2. More than one air source heat pump absorbs the hot air at 8-12 degrees Celsius conveyed by the ground exhaust duct, and uses the air source heat pump to directly pass the pressurized hot water tank into the air source heat pump through the heat exchange inlet main pipe Tap water for heating.

S2. The water in the pressurized hot water tank is sent to the air source heat pump for heating through the heat exchange circulating water pump device. The water temperature of the tap water is heated from 6-8 degrees Celsius in spring/autumn/winter to about 55 degrees Celsius. The final tap water is refluxed and stored in the pressurized hot water tank through the heat exchange outlet water main pipe;

S3. The tap water at about 55 degrees Celsius in the pressurized hot water tank is supplied to the gas boiler through the hot water delivery pipe for secondary heating to about 80 degrees Celsius, and provided to the back kitchen of the store.

The present invention adopts the above technical scheme, utilizes the air source heat pump to collect a large amount of heat energy and converts it into energy to heat the tap water, and after the temperature of the tap water is heated, it is transported to the pressurized hot water tank through the heat exchange outlet main pipe. Using the heat exchange circulating water pump device to continuously pump the water in the pressurized hot water tank to the air source heat pump for continuous circulation heating; then transport the heated water in the pressurized hot water tank to the gas boiler for secondary heating. Hot water preparation can effectively save a lot of gas costs. At the same time, a large amount of hot air with high latent heat generated by the existing store floor exhaust fans and kitchen dishwashers and pot washing machines has been reused.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (10)

1. Air source heat pump heat recovery system device, characterized in that it includes more than one air source heat pump, at least one pressurized hot water tank, heat exchange circulating water pump device, gas boiler and boiler hot water circulating pump, It also includes the heat exchange water inlet main pipe, the heat exchange water outlet main pipe, the heat exchange water inlet branch pipe and the heat exchange water outlet branch pipe, among which; Each air source heat pump communicates with the heat exchange water inlet main pipe through a heat exchange water inlet branch pipe, and the other end of the heat exchange water inlet pipe directly or indirectly communicates with the pressurized hot water tank; Each air source heat pump communicates with the heat exchange outlet main pipe through a heat exchange outlet branch pipe, and the other end of the heat exchange outlet main pipe directly or indirectly communicates with the pressurized hot water tank; The heat exchange circulating water pump device is installed on the heat exchange inlet main pipe; The heat exchange circulating water pump device includes a main circulation device and a backup circulation device; wherein The main circulation device includes a first check valve, a first heat exchange circulating water pump, and a first drain valve arranged in series on the heat exchange water inlet main pipe; The standby circulation device includes a second check valve, a second heat exchange circulating water pump, and a second drain valve; the second check valve, the second heat exchange circulating water pump, and the second drain valve depend on After this series connection, it is connected in parallel as a bypass on one side of the main circulation device; It also includes a hot water delivery pipe, one end of the hot water delivery pipe communicates with the pressurized hot water tank; the other end of the hot water delivery pipe directly or indirectly communicates with the boiler hot water circulation pump. 2. The air source heat pump heat recovery system device according to claim 1, characterized in that: the heat exchange water inlet branch pipe is provided with a reducing head, a metal hose, a filter, a pressure gauge, a thermometer and a normally open Valve; wherein the reducing head, the metal hose, the filter, the pressure gauge, the thermometer and the normally open valve are connected in series; The heat exchange outlet branch pipe is provided with a reducing head, a metal hose, a water flow switch, a pressure gauge, a thermometer and a normally open valve; wherein the reducing head, the metal hose, the water flow switch, the The pressure gauge, the thermometer and the normally open valve are thus connected in series. 3. The air source heat pump heat recovery system device according to claim 2, characterized in that: the pressurized hot water tank is also connected with a tap water supply pipeline; the tap water supply pipeline includes a tap water supply pipe, a main water supply pipe pipelines and alternate water supply lines, of which The main water supply pipeline includes a main booster pump arranged on the tap water supply pipe and a normally open valve connected in series on both sides of the main booster pump; The standby water supply pipeline is connected in parallel to the main water supply pipeline as a bypass; The backup water supply pipeline includes a backup booster pump and a normally closed valve connected in series to both sides of the backup booster pump. 4. The air source heat pump heat recovery system device according to claim 3, characterized in that: the tap water supply pipe between the tap water supply pipeline and the pressurized hot water tank is also provided with a normally open valve and a Three check valves, the normally open valve and the third check valve are connected in series. 5 . The air source heat pump heat recovery system device according to claim 4 , wherein a normally open valve and a fourth check valve are arranged on the hot water delivery pipe. 6 . The air source heat pump heat recovery system device according to any one of claims 1 to 5 , wherein a temperature sensing probe for detecting water temperature is arranged in the pressurized hot water tank. 7 . 7. The air source heat pump heat recovery system device according to any one of claims 1 to 5, characterized in that normally open valves are respectively installed at both ends of the main circulation device on the heat exchange inlet pipe, wherein One normally open valve is connected in series with the first check valve, and the other normally open valve is connected in series with the first drain valve; Both ends of the standby circulation device are equipped with normally open valves, one of which is connected in series with the second check valve, and the other normally open valve is connected in series with the second drain valve. 8. The air source heat pump heat recovery system device according to any one of claims 1 to 5, characterized in that it further comprises a ground exhaust duct for transporting hot air, one end of the ground exhaust duct is directly or Indirectly communicated with the air source heat pump, the other end of the ground exhaust air pipe is arranged at at least one of the exhaust fan, the dishwasher fan and the pot washer fan. 9. The operation method of the air source heat pump heat recovery system device, characterized in that: the method uses the air source heat pump heat recovery system device described in any one of claims 1 to 8, The operation method of the air source heat pump heat recovery system device in summer is as follows: S1. More than one air source heat pump directly absorbs the high-temperature air of 30-35 degrees Celsius in the air, and uses the air source heat pump to directly heat the tap water that enters the air source heat pump through the pressurized hot water tank through the heat exchange inlet pipe; S2. The water in the pressurized hot water tank is sent to the air source heat pump for heating through the heat exchange circulating water pump device. The water temperature of the tap water is heated from 10-15 degrees Celsius in summer to about 55 degrees Celsius, and the heated tap water passes through The heat exchange outlet main pipe is backflow stored in the pressurized hot water tank; S3. The tap water at about 55 degrees Celsius in the pressurized hot water tank is supplied to the gas boiler through the hot water delivery pipe for secondary heating to about 80 degrees Celsius, and provided to the back kitchen of the store. 10. The operation method of the air source heat pump heat recovery system device, characterized in that: the method uses the air source heat pump heat recovery system device described in any one of claims 1 to 8, The operation method of the air source heat pump heat recovery system device in spring/autumn/winter is as follows: S1. The ground exhaust air generated by at least one of the exhaust fan, the dishwasher fan and the pot washing machine fan is delivered to the air source heat pump through the ground exhaust air pipe; S2. More than one air source heat pump absorbs the hot air at 8-12 degrees Celsius conveyed by the ground exhaust duct, and uses the air source heat pump to directly pass the pressurized hot water tank into the air source heat pump through the heat exchange inlet main pipe tap water for heating; S2. The water in the pressurized hot water tank is sent to the air source heat pump for heating through the heat exchange circulating water pump device. The water temperature of the tap water is heated from 6-8 degrees Celsius in spring/autumn/winter to about 55 degrees Celsius. The final tap water is refluxed and stored in the pressurized hot water tank through the heat exchange outlet water main pipe; S3. The tap water at about 55 degrees Celsius in the pressurized hot water tank is supplied to the gas boiler through the hot water delivery pipe for secondary heating to about 80 degrees Celsius, and provided to the back kitchen of the store.

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