CN103574967B - The air conditioner and heat pump unit of a kind of band anti-freezing solution regenerating unit - Google Patents

Abstract

The invention discloses an air conditioner heat pump unit with an antifreeze solution regeneration device, which includes a compressor, an evaporative condenser, a throttling device, an evaporator, a blower, and an antifreeze solution regeneration device. The regeneration device includes a high-temperature heat source area, an antifreeze solution Liquid collecting pan, low-temperature cold source area, condensed water collecting pan, sprayer, gas circulation fan and gas circulation air duct; the low-concentration antifreeze solution flowing out of the sprayer undergoes mass transfer with the circulating gas , Transfer the moisture of the low-concentration antifreeze solution to the circulating gas, and at the same time, the concentrated antifreeze solution enters the antifreeze solution collecting pan. The invention realizes the regeneration of the antifreeze solution, avoids the freezing of the antifreeze solution, and provides technical guarantee for the heat pump unit of the air conditioner to obtain heat from the outdoor air through the evaporative condenser to realize efficient, continuous and stable heat supply.

Description

An air-conditioning heat pump unit with an antifreeze solution regeneration device

technical field

The invention relates to the technical field of heat pump units for air conditioners, in particular to an air conditioner heat pump unit with an antifreeze solution regeneration device.

Background technique

The use of evaporative condensers to extract heat from the outdoor air and provide thermal energy for the air-conditioning heat pump unit in winter is an important way to achieve efficient and stable heat supply. Compared with air source heat pumps, it has high heat exchange efficiency and saves heat exchanger materials. , can achieve continuous heating, and has a significant prospect of energy saving and emission reduction. However, in the currently commonly used air-conditioning heat pump units, when the temperature of the brine (cooling water) in the evaporative condenser is lower than 0°C, the brine will freeze into ice, and the evaporative condenser and its connected parts may There is a danger of being damaged by expansion cracks. At this time, if an antifreeze solution with a suitable concentration can be obtained, it can ensure that all parts work normally at low temperatures. In addition, when the heat pump works, after the evaporative condenser takes heat from the air, the temperature of the air will drop, which will cause the moisture in the air to condense, and this part of the condensed water will enter the antifreeze solution, which will lead to the dilution of the antifreeze solution. As the concentration of the solution decreases, the freezing point of the antifreeze solution will increase. If the concentration of the antifreeze solution is not increased in time (or solution regeneration), the solution pool, water pump and other components of the evaporative condenser still have the risk of expansion and cracking. In order to solve this problem, at present, the diluted solution is often added with high-concentration antifreeze, and the overflowed diluted antifreeze solution is stored in an indoor or underground solution storage tank. After the outdoor temperature rises, the diluted antifreeze The solution is pumped into the evaporative condenser, and the energy in the air is used to realize the regeneration of the solution. This method inevitably requires a high concentration of antifreeze, a large-capacity storage tank for concentrated solution and dilute solution, resulting in a large amount of antifreeze and a large solution storage space. Huge, extremely high initial investment and increased operating costs of antifreeze greatly limit the application of evaporative condensers as heat pump heat pump units in low temperature areas.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a safe and reliable air-conditioning heat pump unit with an antifreeze solution regeneration device that can stably increase the concentration of antifreeze solution and realize heat recovery. The use of this unit can effectively reduce the The initial investment and operating costs of the system.

To achieve the above object, the technical solution of the present invention is:

An air-conditioning heat pump unit with an antifreeze solution regeneration device, including a compressor, an evaporative condenser, a throttling device, an evaporator, and a blower; it is characterized in that the unit also includes an antifreeze solution regeneration device, and the regeneration device includes a high-temperature heat source area, antifreeze solution collecting tray, low-temperature cold source area, condensed water collecting tray, shower, gas circulation fan and gas circulation air duct; wherein, the high-temperature heat source area is provided with a high-temperature heat source, and the sprayer The inlet is connected to the low-concentration antifreeze solution channel connected to the evaporative condenser. The low-concentration antifreeze solution flowing out of the sprayer flows through the high-temperature heat source area and then evaporates and concentrates. After mass transfer with the circulating gas, the low-concentration antifreeze solution The water content of the concentrated antifreeze solution is transferred to the circulating gas, and the concentrated antifreeze solution enters the antifreeze solution collecting pan at the same time, and the solution in the antifreezing solution collecting pan enters the high-concentration solution channel connected with the evaporative condenser; the low temperature The cold source area is provided with a low-temperature cold source, and the condensed water collecting tray is arranged under the low-temperature cold source area, and is provided with a condensed water outlet; In the air duct, the circulating gas is driven to flow from the high-temperature heat source area to the low-temperature cold source area. After absorbing moisture in the high-temperature heat source area and depositing condensed water in the low-temperature heat source area, the circulating gas continues to return to the high-temperature heat source along the gas circulation air duct. area circulation.

Further, the relative position arrangement of the gas circulation fan, high temperature heat source area and low temperature cold source area is: high temperature heat source area - gas circulation fan - low temperature cold source area, gas circulation fan - high temperature heat source area - low temperature cold source area or High temperature heat source area - low temperature cold source area - gas circulation fan.

Further, the carrier of the high-temperature heat source and the low-temperature cold source is the refrigerant used in the air-conditioning heat pump unit.

Further, the high-temperature heat source is arranged between the shower and the antifreeze solution pan; or the high-temperature heat source is arranged at the inlet of the circulating gas in the high-temperature heat source area and outside the shower, so as to Heat the circulating gas through the bottom of the shower for heat exchange; or the high-temperature heat source is arranged before the inlet of the shower, so that the low-concentration antifreeze solution is heated before entering the shower Heat exchange with circulating gas.

Further, the inlet and outlet of the sprayer are provided with control valves; the inlet and outlet of the high-temperature heat source are respectively communicated with the refrigerant exhaust port and the refrigerant suction port of the compressor through the control valves; The inlet and outlet of the low-temperature cold source communicate with the liquid pipe and gas pipe of the evaporative condenser through control valves respectively.

Preferably, the high-temperature heat source is arranged between the shower and the antifreeze solution collecting pan; the refrigerant flows in the high-temperature heat source and the low-temperature cold source of the coil structure.

Preferably, a spray circulation pump is provided between the sprayer and the antifreeze solution collecting pan, and the antifreezing solution collecting pan is also connected to the low-concentration antifreeze solution channel in the air conditioning system.

Preferably, a solution pump is provided on the high-concentration solution channel.

Preferably, the heat pump unit is provided with a first refrigeration valve, a second refrigeration valve, a first heat pump valve and a second heat pump valve; wherein, the first refrigeration valve is arranged between the exhaust port of the compressor and On the connecting pipeline of the gas pipe of the evaporative condenser, the second refrigeration valve is arranged on the connecting pipeline between the suction port of the compressor and the gas pipe of the evaporator, and the first heat pump valve It is arranged on the connection pipeline between the exhaust port of the compressor and the gas pipe of the evaporator, and the second heat pump valve is arranged on the suction port of the compressor and the gas pipe of the evaporative condenser. On the connecting pipeline, the liquid pipe of the evaporative condenser is connected with the liquid pipe of the evaporator through the throttling device.

Preferably, the exhaust port of the compressor is provided with a first reversing valve, and the suction port of the compressor is provided with a second reversing valve; the two outlets of the first reversing valve are respectively connected to the The gas pipe of the evaporative condenser is connected with the gas pipe of the evaporator, and the two inlets of the second reversing valve are respectively connected with the gas pipe of the evaporative condenser and the gas pipe of the evaporator.

More preferably, the heat pump unit is provided with a four-way reversing valve, and the four ports of the four-way reversing valve are respectively connected to the exhaust port of the compressor, the gas pipe of the evaporative condenser, the The gas pipe of the evaporator is connected with the suction port of the compressor.

Preferably, the inlet and outlet of the sprayer are provided with control valves; the inlet of the high-temperature heat source communicates with the refrigerant exhaust port of the compressor through the control valve, and the outlet communicates with the refrigerant discharge port of the compressor through the second throttling device. The inlet of the low-temperature cold source is communicated; the outlet of the low-temperature cold source is communicated with the gas pipe of the evaporative condenser through a control valve.

Preferably, the carrier of the high-temperature heat source is the refrigerant used in the air-conditioning heat pump unit, and the carrier of the low-temperature cold source is external fresh air; the inlet and outlet of the shower are provided with control valves; the inlet of the high-temperature heat source, The outlets communicate with the refrigerant exhaust port and the refrigerant suction port of the compressor respectively through control valves; the low-temperature cold source area is provided with a heat exchanger, and the heat exchanger is provided with a fresh air inlet that communicates with the external fresh air and a fresh air outlet connected to the evaporative condenser, so that the fresh air preheated by the circulating gas is discharged through the pipeline to the evaporative condenser for heat and mass exchange with the antifreeze solution.

Preferably, multiple evaporators 4 are connected in parallel.

Compared with the prior art, the present invention has the following beneficial effects:

1. Regeneration of the solution is realized, and the freezing of the antifreeze solution is avoided: the low-concentration antifreeze solution in the evaporative condenser performs heat exchange with the high-temperature heat source and the circulating gas, and the water in the low-concentration antifreeze solution is taken away by the circulating gas, making the low-concentration antifreeze solution The concentration of the concentrated solution increases to continuously meet the antifreeze requirements of the system operation.

2. Recycling of energy is realized: the high-temperature and high-humidity circulating gas exchanges heat with the low-temperature and low-pressure refrigerant of the low-temperature cold source, and precipitates condensed water, recovers the condensation heat in the regeneration process, and improves the energy utilization rate of the system.

3. Realize the frost-free operation of the heat pump: the low-concentration antifreeze solution in the evaporative condenser passes through the antifreeze solution regeneration device to increase the concentration of the solution, which can avoid the phenomenon of frosting or freezing of the evaporative condenser and its components during the heat pump working condition , so that the heat pump can achieve continuous operation without defrosting.

4. The fresh water discharged from the condensed water outlet can be used as the water source of domestic water and indoor humidification equipment, realizing the recycling of water resources.

5. This antifreeze solution regeneration device provides technical support for air-conditioning heat pump units to obtain heat from outdoor air through evaporative condensers to achieve efficient, continuous and stable heat supply, and effectively expands the use of evaporative condensers for air source heat pumps at low temperatures. area of applicability.

Description of drawings

FIG. 1 is a schematic structural diagram of Embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of Embodiment 2 of the present invention.

Fig. 3 is a schematic structural diagram of a regeneration device in Embodiment 3 of the present invention.

Fig. 4 is a schematic structural diagram of a regeneration device in Embodiment 4 of the present invention.

Fig. 5 is a schematic structural diagram of a regeneration device in Embodiment 5 of the present invention.

Fig. 6 is a schematic structural diagram of Embodiment 6 of the present invention.

FIG. 7 is a schematic structural diagram of Embodiment 7 of the present invention.

Fig. 8 is a schematic structural diagram of Embodiment 8 of the present invention.

FIG. 9 is a schematic structural diagram of Embodiment 9 of the present invention.

Fig. 10 is a schematic structural diagram of Embodiment 10 of the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

Example 1

This embodiment is an air conditioner heat pump unit with an antifreeze solution regeneration device, which has a refrigeration cycle mode and a heat pump cycle mode. As shown in Figure 1, it includes a compressor 1, an evaporative condenser 2, a throttling device 3, an evaporator 4, and a blower 4'; in the cooling water system of the device.

The unit is provided with a first refrigeration valve 17, a second refrigeration valve 18, a first heat pump valve 19 and a second heat pump valve 20; On the connecting pipeline of the pipe 2a, the second refrigeration valve is set on the connecting pipeline between the suction port 1b of the compressor and the gas pipe 4b of the evaporator, and the first heat pump valve is set on the exhaust port of the compressor and the gas pipe of the evaporator. On the connecting pipeline of the pipe, the second heat pump valve is set on the connecting pipeline between the suction port of the compressor and the gas pipe of the evaporative condenser, and the liquid pipe 2b of the evaporative condenser passes through the throttling device 3 and the liquid of the evaporator Tube 4a is connected.

The antifreeze solution regeneration device includes: a high temperature heat source 5a, a solution liquid collection tray 6a, a low temperature cold source 5b, a condensed water collection tray 6b, a shower 7, a gas circulation fan 8 and a gas circulation air duct 9, and the gas circulation fan 8 is arranged on In the gas circulation duct 9 connecting the high-temperature heat source area and the low-temperature cold source area, the circulating gas is driven to flow from the high-temperature heat source area to the low-temperature cold source area. The gas continues to circulate and flow back to the high-temperature heat source area along the gas circulation air channel. Gases such as air or nitrogen can be used as the circulating gas. In this embodiment, the relative position arrangement of the gas circulation fan, the high-temperature heat source area and the low-temperature cold source area is preferably: high-temperature heat source area-gas circulation fan-low-temperature cold source area.

The high-temperature heat source area and the low-temperature cold source area are respectively provided with corresponding heat exchange areas, and are respectively provided with a high-temperature heat source and a low-temperature cold source. In the high-temperature heat source area, the mass transfer and exchange mode of circulating gas and antifreeze solution can be forward flow, countercurrent flow, mixed flow or cross flow. The carrier of the high-temperature heat source and the low-temperature cold source is the refrigerant used in the operation of the air-conditioning heat pump unit, and the refrigerant preferably flows in the high-temperature heat source and the low-temperature cold source of the coil structure. The inlet of the shower 7 is connected to the low-concentration solution channel 13 of the evaporative condenser 2 through the third heat pump valve 21, and a high-temperature heat source 5a is arranged below the shower 7, and the low-concentration antifreeze sprayed from the shower 7 After the solution flows through the high temperature heat source 5a in the high temperature heat source area, the antifreeze solution evaporates and concentrates into the antifreeze solution collecting pan 6a. The concentrated solution outlet 12a in the solution collecting tray 6a is connected to the high-concentration solution channel of the evaporative condenser 2 through the fourth heat pump valve 22, and the condensed water collecting tray 6b is arranged under the low-temperature cold source area and is provided with a condensation water outlet. 12b, the condensed water can be used for corresponding air conditioning system or other purposes after being collected. The gas circulation fan is arranged in the gas circulation duct connecting the high-temperature heat source and the low-temperature cold source; the inlet 10a of the high-temperature heat source is connected to the gas pipe of the evaporator through the fifth heat pump valve 23, and the outlet 11a of the high-temperature heat source passes through the sixth heat pump valve 24 is connected to the liquid pipe of the evaporator, the inlet 10b of the low-temperature cold source is connected to the liquid pipe of the evaporative condenser through the seventh heat pump valve 25, and the outlet 11b of the low-temperature cold source is connected to the gas of the evaporative condenser through the eighth heat pump valve 26 Tube.

The first refrigeration valve 17 and the second refrigeration valve 18 mentioned above, the first heat pump valve 19, the second heat pump valve 20, the third heat pump valve 21, the fourth heat pump valve 22, the fifth heat pump valve 23, the The sixth heat pump valve 24, the seventh heat pump valve 25 and the eighth heat pump valve 26 can all be electric valves or manual valves. In order to increase the heat exchange area, the lower layer of the shower can also optionally be provided with heat exchange fillers 14 .

The principle of use is: in refrigeration cycle mode, open the first refrigeration valve 17 and the second refrigeration valve 18, close the first heat pump valve 19, the second heat pump valve 20, the third heat pump valve 21, and the fourth heat pump valve 22 , the fifth heat pump valve 23, the sixth heat pump valve 24, the seventh heat pump valve 25, and the eighth heat pump valve 26. When the refrigerant is compressed by the compressor 1 and becomes a high-temperature and high-pressure gas, it enters the evaporation system through the refrigeration system pipeline. Type condenser 2, after passing through the evaporative condenser 2, the high-temperature and high-pressure gas is cooled into a low-temperature and high-pressure liquid, and the low-temperature and low-pressure liquid is formed through the throttling device 3 and enters the evaporator 4 for heat exchange with air to produce cold air. Then the refrigerant liquid evaporates in the evaporator 4 and is sucked away by the compressor 1 to complete the refrigeration cycle mode; in the heat pump cycle mode, open the first heat pump valve 19, the second heat pump valve 20, and the third heat pump valve 21 , the fourth heat pump valve 22, the fifth heat pump valve 23, the sixth heat pump valve 24, the seventh heat pump valve 25 and the eighth heat pump valve 26, close the first cooling valve 17 and the second cooling valve 18, and the refrigeration When the agent is compressed by the compressor 1 and becomes a high-temperature and high-pressure gas, it enters the evaporator 4 through the refrigeration system pipe, and exchanges heat with the air to produce hot air. The flow device 3 forms a low-temperature and low-pressure liquid into the evaporative condenser 2, and then the refrigerant liquid evaporates in the evaporative condenser and is sucked away by the compressor 1 to complete the heat pump cycle mode.

Among them, the principle of the antifreeze solution regeneration device is: heat pump circulation mode, the sprayer 7 sprays low-concentration solution to the high-temperature heat source 5a, and the gas circulation fan drives the circulating gas to flow through the high-temperature heat source 5a, and comes from the inlet of the high-temperature heat source 5a The high-temperature refrigerant exchanges heat with the spray solution and the circulating gas. The refrigerant releases heat and flows away from the outlet of the high-temperature heat source 5a. After the circulating gas absorbs the water in the solution, the temperature and moisture content of the gas increase, and After the water content of the solution evaporates, the concentration increases and falls into the solution collecting pan 6a and then flows out from the outlet of the concentrated solution; the high-temperature and high-humidity circulating gas continues to flow through the low-temperature cold source 5b, and the low-temperature cold source 5b coming from the inlet of the low-temperature cold source 5b The refrigerant performs heat exchange, the temperature of the circulating gas drops and condensed water is precipitated, and the condensed water flows away from the water outlet 12b of the condensed water collecting pan 6b, and at the same time, the refrigerant of the low-temperature cold source 5b absorbs heat from the outlet of the low-temperature cold source 5b The gas is driven by the gas circulation fan 8 and returns to the high temperature heat source 5a along the circulation air duct 9 to continue to circulate.

Example 2

This embodiment provides another air-conditioning heat pump unit with an antifreeze solution regeneration device, as shown in Figure 2, compared with Embodiment 1, the difference is that in order to make the high-concentration solution return to the evaporative condenser 2 more smoothly A solution pump 15 is added to the concentrated solution outlet 12a in the solution collecting tray 6a, so that the high-concentration solution returns to the evaporative condenser 2 after being pressurized by the solution pump 15.

Example 3

This embodiment is an improvement of embodiment 1, as shown in Figure 3, compared with embodiment 1, in order to facilitate the evaporation of water from the low-concentration antifreeze solution and form a concentrated solution, the difference is that the spray Circulation pump 16, the inlet of described spraying circulation pump 16 connects solution collecting tray 6a, the outlet of spraying circulating pump 16 connects shower 7, and low concentration solution channel 13 then connects solution collecting tray 6a, can make like this The spray solution circulates through the high-temperature heat source 5a for many times, so as to realize the requirement that the concentration of the solution increases after the water evaporates more.

Example 4

This embodiment is an improvement of Embodiment 1, as shown in Figure 4, compared with Embodiment 1, the difference is that this regeneration device uses the high-temperature heat source for heating the circulating gas, and the high-temperature heat source 5a is located at the nozzle The outside of the shower 7 is located at the inlet of the circulating gas. The carrier of the high-temperature heat source 5a also uses the refrigerant in the air-conditioning system. The high-temperature heat source 5a can be designed as any structure that is beneficial to heating the circulating gas. A heat exchange filler 14 is arranged below the sprayer 7 .

After the circulating gas flows through the high-temperature heat source 5a, the temperature of the gas increases, and then the high-temperature gas exchanges heat with the spray solution. After the high-temperature gas absorbs the water in the solution, the moisture content of the gas increases, and at the same time, the concentration of the solution increases after the water evaporates. After falling into the solution collecting tray, it flows out from the concentrated solution outlet 12a, and then the circulating gas exchanges heat with the low-temperature cold source 5b.

Example 5

This embodiment is an improvement of Embodiment 1, as shown in Figure 5, compared with Embodiment 1, the difference is that the regeneration device uses the high-temperature heat source for heating the low-concentration solution, and the high-temperature heat source 5a is set Before the entrance of the sprayer 7, the carrier of the high-temperature heat source 5a also adopts the refrigerant in the air-conditioning system, and the high-temperature heat source 5a can be designed as any structure that is conducive to heating the high-temperature heat source carrier, such as a pipe jacket structure. A heat exchange filler 14 is arranged below the sprayer 7 . After the low-concentration solution flows through the high-temperature heat source 5a, the temperature of the solution rises, and then the high-temperature and low-concentration solution exchanges heat with the circulating gas. After the circulating gas absorbs the water in the solution, the temperature and moisture content of the gas both increase, and the solution After the water evaporates, the concentration rises and falls into the solution collecting tray, then flows out from the concentrated solution outlet 12a, and then the circulating gas exchanges heat with the low-temperature cold source 5b.

Example 6

This embodiment is an improvement of embodiment 1. As shown in FIG. 6 , compared with embodiment 1, the difference lies in that the control valves of the exhaust port and the suction port of the compressor are improved. Specifically, the exhaust port of the compressor is provided with a first reversing valve 27, and the suction port of the compressor is provided with a second reversing valve 28; the two outlets of the first reversing valve are connected to the evaporative condenser respectively. The gas pipe of the evaporator is connected with the gas pipe of the evaporator, and the two inlets of the second reversing valve are respectively connected with the gas pipe of the evaporative condenser and the gas pipe of the evaporator. The first reversing valve 27 and the second reversing valve 28 are electric or manual two-position three-way reversing valves.

Example 7

This embodiment is an improvement of embodiment 1, as shown in Figure 7, compared with embodiment 1, the difference is that, as an improvement, the heat pump unit is provided with a four-way reversing valve 29, The four ports of the four-way reversing valve are respectively connected with the exhaust port of the compressor, the gas pipe of the evaporative condenser, the gas pipe of the evaporator and the suction port of the compressor.

Example 8

This embodiment is an improvement of embodiment 1, as shown in Figure 8, compared with embodiment 1, the difference is that, as an improvement, the outlet 11a of the high-temperature heat source passes through the second throttling device 3' is connected to the inlet 10b of the low-temperature cooling source.

Heat pump cycle mode, open the first heat pump valve 19, the second heat pump valve 20, the third heat pump valve 21, the fourth heat pump valve 22, the fifth heat pump valve 23 and the eighth heat pump valve 26, close the first The refrigeration valve 17 and the second refrigeration valve 18, the high-temperature refrigerant coming from the inlet 10a of the high-temperature heat source 5a flows away from the outlet 11a of the high-temperature heat source after releasing heat in the high-temperature heat source, and then the refrigerant passes through the second throttling device 3' 1. The inlet 10b of the low-temperature cold source 5b enters the low-temperature cold source, and flows away from the outlet 11b of the low-temperature cold source after absorbing heat in the low-temperature cold source; at the same time, the sprayer 7 sprays low-temperature heat to the high-temperature heat source 5a. At the same time, the fan 8 drives the circulating gas to flow from the high-temperature heat source area to the low-temperature cold source area. After absorbing water in the high-temperature heat source area and depositing condensed water in the low-temperature heat source area, the circulating gas continues to return along the gas circulation air duct 9 Circulate to the high temperature heat source area.

Example 9

This embodiment is an improvement of embodiment 1, as shown in Figure 9, compared with embodiment 1, the difference is that, as an improvement, the fresh air is preheated through the heat exchanger 5b of the low-temperature cold source Then enter the evaporative condenser 2 to exchange heat and mass with the solution. Wherein, the carrier of the high-temperature heat source is the refrigerant used in the air-conditioning heat pump unit, and the carrier of the low-temperature cold source is external fresh air; the low-temperature cold source area is provided with a heat exchanger 5b as a low-temperature cold source, and the heat exchanger 5b is provided with fresh air. The inlet 30a and the outlet 30b, and the outlet 30b of the heat exchanger 5b communicate with the evaporative condenser 2 through pipelines.

Heat pump cycle mode, open the first heat pump valve 19, the second heat pump valve 20, the third heat pump valve 21, the fourth heat pump valve 22, the fifth heat pump valve 23 and the sixth heat pump valve 24, close the first Refrigeration valve 17 and second refrigeration valve 18, the sprayer 7 sprays low-concentration solution to the high-temperature heat source 5a, and the fan 8 drives the circulating gas to flow through the high-temperature heat source 5a, and the high-temperature refrigerant coming from the inlet 10a of the high-temperature heat source 5a After the heat is released in the high-temperature heat source, it flows away from the outlet 11a of the high-temperature heat source. After the circulating gas absorbs the moisture in the antifreeze solution, the temperature and moisture content of the gas increase, and at the same time, the concentration of the antifreeze solution increases and falls after the water evaporates. After entering the antifreeze solution liquid collection tray 6a, it flows out from the concentrated solution outlet; then, the fan 8 drives the circulating gas to flow through the low-temperature cold source area, and after heat exchange with the outside fresh air, condensed water is precipitated, and the circulating gas continues along the gas circulation air channel 9 Return to the high temperature heat source area for circulation. At the same time, the outside fresh air is preheated by the low-temperature cold source 5b and then the temperature rises, and enters the evaporative condenser 2 for heat and mass exchange with the antifreeze solution. This embodiment can improve the heat exchange effect of the evaporative condenser.

Example 10

This embodiment is an improvement of embodiment 1, as shown in FIG. 10 , compared with embodiment 1, the difference is that, as an improvement, the evaporators 4 are connected in parallel.

As mentioned above, the present invention can be better realized. The above-mentioned embodiment is only a preferred embodiment of the present invention, and is not used to limit the scope of the present invention; Covered by the scope of protection required by the claims of the present invention.

Claims (14)

1. An air-conditioning heat pump unit with an antifreeze solution regeneration device is characterized in that it includes a compressor, an evaporative condenser, a throttling device, an evaporator and a blower; it is characterized in that: the unit also includes an antifreeze solution regeneration device, so The regeneration device includes a high-temperature heat source area, an antifreeze solution collecting pan, a low-temperature cold source area, a condensed water collecting pan, a shower, a gas circulation fan and a gas circulation air duct; wherein, The high-temperature heat source area is provided with a high-temperature heat source, and the inlet of the sprayer is connected to a low-concentration antifreeze solution channel connected to the evaporative condenser, and the low-concentration antifreeze solution flowing out of the sprayer flows through the high-temperature heat source area. Evaporating and concentrating into the antifreeze solution collecting tray, the solution in the antifreezing solution collecting tray enters the high-concentration solution channel communicated with the evaporative condenser; The low-temperature cold source area is provided with a low-temperature cold source, and the condensed water collecting tray is arranged under the low-temperature cold source area, and is provided with a condensed water outlet; The gas circulation fan is set in the gas circulation duct connecting the high-temperature heat source area and the low-temperature cold source area to drive the circulating gas to flow from the high-temperature heat source area to the low-temperature cold source area, absorb moisture in the high-temperature heat source area and precipitate in the low-temperature heat source area After the water is condensed, the circulating gas continues to return to the high-temperature heat source area along the gas circulating air channel and circulates. 2. The air-conditioning heat pump unit according to claim 1, characterized in that: the relative position arrangement of the gas circulation fan, the high-temperature heat source area and the low-temperature cold source area is: high-temperature heat source area-gas circulation fan-low-temperature cold source area , Gas circulation fan - high temperature heat source area - low temperature cold source area or high temperature heat source area - low temperature cold source area - gas circulation fan. 3. The air-conditioning heat pump unit according to claim 1, wherein the high-temperature heat source is arranged between the shower and the antifreeze solution collecting pan; or the high-temperature heat source is arranged at the top of the high-temperature heat source area The inlet of the circulating gas and the outside of the shower, so that the heated circulating gas passes through the bottom of the shower for heat exchange; or the high-temperature heat source is arranged before the inlet of the shower, so that The low-concentration antifreeze solution is heated first and then enters the sprayer to exchange heat with the circulating gas. 4. The air-conditioning heat pump unit according to claim 1, wherein the carrier of the high-temperature heat source and the low-temperature cold source is the refrigerant used in the air-conditioning heat pump unit. 5. The air-conditioning heat pump unit according to any one of claims 1-4, characterized in that: the inlet and outlet of the shower are provided with control valves; The refrigerant discharge port and the refrigerant suction port of the compressor are connected; the inlet and outlet of the low-temperature cold source are respectively connected with the liquid pipe and the gas pipe of the evaporative condenser through control valves. 6. The air-conditioning heat pump unit according to claim 5, characterized in that: the high-temperature heat source is arranged between the sprayer and the antifreeze solution pan; flow in the cold source. 7. The air-conditioning heat pump unit according to any one of claims 1-4, characterized in that: the inlet and outlet of the sprayer are provided with control valves; the inlet of the high-temperature heat source is connected with the compressor The refrigerant exhaust port of the machine is connected, and the outlet is connected with the inlet of the low-temperature cold source through the second throttling device; the outlet of the low-temperature cold source is connected with the gas pipe of the evaporative condenser through a control valve. 8. The air-conditioning heat pump unit according to claim 7, characterized in that: the high-temperature heat source is arranged between the sprayer and the antifreeze solution pan; flow in the cold source. 9. The air-conditioning heat pump unit according to any one of claims 1-4, characterized in that: the carrier of the high-temperature heat source is the refrigerant used in the air-conditioning heat pump unit, and the carrier of the low-temperature cold source is external fresh air; The inlet and outlet of the shower are provided with control valves; the inlet and outlet of the high-temperature heat source are respectively communicated with the refrigerant exhaust port and refrigerant suction port of the compressor through control valves; the low-temperature cold source area is provided with There is a heat exchanger, and the heat exchanger is provided with a fresh air inlet connected with the outside fresh air and a fresh air outlet connected with the evaporative condenser, so that the fresh air preheated by the circulating gas is discharged to the evaporator through the pipeline. type condenser. 10. The air-conditioning heat pump unit according to any one of claims 1-4, characterized in that: a spray circulation pump is provided between the sprayer and the antifreeze solution collecting pan, and the antifreeze solution collects The disc is also connected to the low concentration antifreeze solution channel in the air conditioning system. 11. The air-conditioning heat pump unit according to any one of claims 1-4, wherein a solution pump is provided on the high-concentration solution channel. 12. The air-conditioning heat pump unit according to any one of claims 1-4, characterized in that: the heat pump unit is provided with a first refrigeration valve, a second refrigeration valve, a first heat pump valve, and a second heat pump valve; wherein , the first refrigeration valve is arranged on the connection pipeline between the exhaust port of the compressor and the gas pipe of the evaporative condenser, and the second refrigeration valve is arranged on the suction port of the compressor and the gas pipe of the evaporative condenser. On the connecting pipeline of the gas pipe of the evaporator, the first heat pump valve is arranged on the connecting pipeline between the exhaust port of the compressor and the gas pipe of the evaporator, and the second heat pump valve is arranged on the The suction port of the compressor is connected to the gas pipe of the evaporative condenser, and the liquid pipe of the evaporative condenser is connected to the liquid pipe of the evaporator through the throttling device. 13. The air-conditioning heat pump unit according to any one of claims 1-4, characterized in that: the exhaust port of the compressor is provided with a first reversing valve, and the suction port of the compressor is provided with a second reversing valve. The two outlets of the first reversing valve are respectively connected with the gas pipe of the evaporative condenser and the gas pipe of the evaporator, and the two inlets of the second reversing valve are respectively connected with the gas pipe of the evaporator The gas pipe of the evaporative condenser is connected to the gas pipe of the evaporator; or the heat pump unit is provided with a four-way reversing valve, and the four ports of the four-way reversing valve are respectively connected to the exhaust gas of the compressor. port, the gas pipe of the evaporative condenser, the gas pipe of the evaporator and the suction port of the compressor. 14. The air-conditioning heat pump unit according to any one of claims 1-4, wherein the evaporators are connected in parallel.