CN201935476U - Heat recovery type air-cooled heat pump unit - Google Patents

Abstract

A heat recovery type air-cooled heat pump unit comprises a first refrigerant circulating system and a second refrigerant circulating system; the first refrigerant circulating system comprises a first compressor, a first four-way valve, a second four-way valve, a first air side fin type heat exchanger, an air conditioner side heat exchanger, a first gas-liquid separator, a total heat recovery heat exchanger, a hot water circulating water pump, a heat preservation water tank and a valve; the second refrigerant circulating system comprises a second compressor, a third four-way valve, a fourth four-way valve, a second air side fin type heat exchanger, an air conditioner side heat exchanger, a third liquid storage device, a second gas-liquid separator, a partial heat recovery heat exchanger, a heat preservation water tank and a valve. The utility model discloses both guaranteed that the heat effectively retrieves and recycles, protect the environment and avoid being heated pollution, environmental protection and energy saving again to effectively solve the air conditioner and heat and can not go on simultaneously with life hot water, and traditional only have single heat recovery system's full heat recovery air conditioning system can not prepare the defect of the life hot water of higher temperature when lower ambient temperature in winter.

Description

A heat recovery type air-cooled heat pump unit

technical field

The utility model relates to the technical field of air conditioning, in particular to a heat recovery type air-cooled heat pump unit.

Background technique

As an alternative means to solve heating problems, heat pumps have great advantages from both technical and economical points of view. Heat pump technology is a way to convert low-grade heat, such as air, water (including: surface water, groundwater, etc.), solar energy, soil, waste heat, etc., into high-grade heat, such as heating heat. Its working principle is: when the heat pump is running, the evaporator absorbs heat from the heat source (heat collection), and provides heat to the heat-using object.

At present, with the development of social economy, more and more air-cooled heat pump units are adopted by people. In summer, when the air-cooled heat pump unit is running, it will emit a large amount of condensation heat to the environment through the air-side fin heat exchanger. The discharge of condensation heat will not only increase the temperature of the city, but also cause The center forms a "heat island" effect. If this part of the energy can be recovered and utilized, it will not only save energy, reduce carbon dioxide emissions, but also protect the environment.

In order to solve the above problems, the authorized announcement number is: CN 2548058Y Chinese utility model patent disclosed a kind of "air conditioning heat recovery unit" on April 30, 2003, and its technical solution is: "compressor and four-way reversing valve A heat recovery heat exchanger is connected to the pipeline between the heat recovery heat exchangers, and the water outlet of the heat recovery heat exchanger is connected to a hot water tank, and the water inlet of the heat recovery heat exchanger is connected to the water inlet pipe." Through the heat recovery heat exchanger, the high temperature The high-pressure superheated steam is cooled and condensed into a high-temperature, high-pressure liquid. At the same time, the exhaust sensible heat and part of the condensation latent heat are used to heat the cold water. The heated hot water is stored in the hot water tank, which can provide domestic hot water.

Although the above-mentioned CN 2548058Y utility model patent technology can recover a large amount of condensation heat by adding a heat recovery heat exchanger, effectively avoiding the heat pollution of the air conditioning system to the surrounding environment, however, this air conditioning heat recovery unit can only be used when the air conditioner is in operation. Only when the air conditioner is not running can domestic hot water be obtained, and there will be no supply of domestic hot water when the air conditioner is not running, which cannot meet people's demand for real-time domestic hot water. Furthermore, this air-conditioning heat recovery unit can only convert part of the condensation heat into hot water to realize partial heat recovery, and the heat recovery efficiency is low, making it difficult to guarantee the normal domestic water consumption of users, thus limiting the use of the air-conditioning heat recovery unit .

Then, in order to solve the problem that the heat recovery system of the air conditioning system has no hot water supply when the air conditioner is not running, a kind of air-cooled air-conditioning system with full heat recovery is proposed.

For example: the authorized announcement number is: CN 200965375Y Chinese utility model patent disclosed a kind of " heat recovery air conditioner unit " on October 24, 2007, and its technical scheme is: " It comprises the compressor (1) that is connected into closed circuit , the first four-way valve (3), heat recovery heat exchanger (14), outdoor heat exchanger (4), liquid storage tank (9), dry filter (10), indoor heat exchanger (15), steam A liquid separator (16) and a plurality of electromagnetic valves, one-way valves and expansion valves, wherein a second four-way valve (2) is additionally set between the compressor (1) and the above-mentioned first four-way valve (3), One outlet of the second four-way valve (2) close to the compressor is connected to the above-mentioned heat recovery heat exchanger (14), the other outlet is connected to the inlet of the first four-way valve (3), and the outlet of the first four-way valve (3) The outdoor heat exchanger (4), liquid storage tank (9), dry filter (10), and indoor heat exchanger (15) are connected in sequence between the two outlets; the vapor-liquid separator (16) is located in the first four-way Between the outlet of the valve (3) and the inlet of the compressor (1); the second four-way valve (2), heat recovery heat exchanger (14), liquid storage tank (9), dry filter (10), indoor heat exchange The device (15) and the first four-way valve (3) are connected to form a closed circuit, and one end of the heat recovery heat exchanger (14) is divided into two circuits, one of which is connected to the liquid storage tank (9), and there is a solenoid valve between the two (6), the other is connected to the end of the outdoor heat exchanger (4) close to the first four-way valve (3), and there is a solenoid valve (7) between the two, between the indoor heat exchanger (15) and the liquid storage tank ( 9) is provided with a check valve (8) connected in parallel with the dry filter (10); another pipeline is provided between the outdoor heat exchanger (4) and the indoor heat exchanger (15). There is an expansion valve (13).” The heat recovery air-conditioning unit can not only provide waste heat recovery when the air conditioner is running, but also realize the air-conditioning unit that can independently heat water when the air conditioner is not in use.

Although, the above-mentioned heat recovery air-conditioning unit solves the problem that the heat recovery system of the air-conditioning system in the prior art has no hot water supply when the air conditioner is not running. However, since the heating and domestic hot water working modes of this heat recovery air-conditioning system use the same heat exchange system to absorb heat from the air, a single heat recovery unit cannot perform both air-conditioning and heating modes and domestic heating mode at the same time. Hot water mode; and because only a single heat recovery unit is used, the temperature of domestic hot water produced by the unit is limited by the performance of the air conditioning system itself, and it cannot produce higher temperature domestic hot water (for example: ≥ 65 ° C), there is The disadvantage of not being able to produce higher temperature domestic hot water when the ambient temperature is lower in winter; at the same time, due to the use of multiple solenoid valves in the air conditioning system, the cost of the air conditioning system is relatively high. In summary, the above reasons all limit the use of air conditioning systems.

Therefore, in order to avoid the deficiencies in the prior art, it is urgent to provide a system that not only ensures the effective recovery and reuse of heat, but also protects the environment from thermal pollution, environmental protection and energy saving, and effectively solves the problem that the heating of air conditioners and domestic hot water cannot be produced at the same time. It is a heat recovery type air-cooled heat pump unit with simple structure and low cost.

Utility model content

The purpose of the utility model is to avoid the deficiencies in the prior art and provide a method that not only ensures the effective recovery and reuse of heat, but also protects the environment from heat pollution, environmental protection and energy saving, and effectively solves the problem of air-conditioning heating and domestic hot water heating. It can not be taken at the same time, and it can not produce higher temperature domestic hot water when the ambient temperature is lower in winter. At the same time, it is a heat recovery type air-cooled heat pump unit with simple structure and low cost.

The purpose of this utility model is achieved through the following technical solutions:

On the one hand, the utility model provides a heat recovery type air-cooled heat pump unit, including a first refrigerant circulation system and a second refrigerant circulation system;

The first refrigerant cycle system includes a first compressor, a first four-way valve, a second four-way valve, a first air-side finned heat exchanger, a first electronic expansion valve, a second electronic expansion valve, The first one-way valve, the second one-way valve, the third one-way valve, the fourth one-way valve, the fifth one-way valve, the air conditioner side heat exchanger, the first liquid reservoir, the second liquid reservoir, the first A gas-liquid separator, a total heat recovery heat exchanger, a hot water circulation pump, and an insulated water tank; the water inlet of the total heat recovery heat exchanger is connected to the water outlet of the insulated water tank through the hot water circulation pump, and the The water outlet of the total heat recovery heat exchanger is connected with the water inlet of the heat preservation water tank;

When neither the second four-way valve nor the first four-way valve is energized, the discharge end of the first compressor is connected to the D1 and C1 ports of the first four-way valve, the second four-way valve D2 and C2 ports of the valve, the first air-side finned heat exchanger, the first one-way valve, the second electronic expansion valve, the second one-way valve, the air-conditioning side heat exchanger device, the E2 and S2 ports of the second four-way valve, the first gas-liquid separator, and the suction end of the first compressor are sequentially connected; when the second four-way valve is energized and the first When the four-way valve is not powered, the discharge end of the first compressor exchanges heat with the D1 and C1 ports of the first four-way valve, the D2 and E2 ports of the second four-way valve, and the air conditioner side. device, the first liquid reservoir, the third one-way valve, the fourth one-way valve, the first electronic expansion valve, the first air-side finned heat exchanger, the first The C2 and S2 ports of the two four-way valves, the first gas-liquid separator, and the suction end of the first compressor are sequentially connected; when the first four-way valve is energized and the second four-way valve is not energized , the discharge end of the first compressor is connected to the D1 and E1 ports of the first four-way valve, the total heat recovery heat exchanger, the second liquid receiver, the fifth one-way valve, The second electronic expansion valve, the second one-way valve, the air conditioner side heat exchanger, the ports E2 and S2 of the second four-way valve, the first gas-liquid separator, the first The suction end of the compressor is connected sequentially; when both the second four-way valve and the first four-way valve are energized, the discharge end of the first compressor is connected to the D1 and E1 ports of the first four-way valve , the total heat recovery heat exchanger, the second liquid reservoir, the fifth check valve, the first electronic expansion valve, the first air-side finned heat exchanger, the second The C2 and S2 ports of the two four-way valves, the first gas-liquid separator, and the suction end of the first compressor are sequentially connected;

The second refrigerant cycle system includes a second compressor, a third four-way valve, a fourth four-way valve, a second air-side finned heat exchanger, a second throttling device, a sixth one-way valve, The seventh one-way valve, the eighth one-way valve, the ninth one-way valve, the air-conditioning side heat exchanger, the third liquid receiver, the second gas-liquid separator, part of the heat recovery heat exchanger and the heat preservation water tank; The heat recovery heat exchanger is arranged in the heat preservation water tank;

When neither the third four-way valve nor the fourth four-way valve is energized, the discharge end of the second compressor is connected to the D3 and C3 ports of the third four-way valve, the sixth one-way valve valve, D4 and C4 ports of the fourth four-way valve, the second air-side finned heat exchanger, the second throttling device, the seventh one-way valve, and the air-conditioning side heat exchanger device, the ports E4 and S4 of the fourth four-way valve, the second gas-liquid separator, and the suction end of the second compressor are sequentially connected; when the fourth four-way valve is energized and the first When the three or four way valves are not energized, the discharge end of the second compressor is connected to the D3 and C3 ports of the third four way valve, the sixth check valve, and the D4 and E4 ports of the fourth four way valve. port, the air conditioner side heat exchanger, the third liquid reservoir, the eighth check valve, the second throttling device, the second air side finned heat exchanger, the first The C4 and S4 ports of the four-way valve, the second gas-liquid separator, and the suction end of the second compressor are connected in sequence; when the third four-way valve is energized and the fourth four-way valve is not energized When, the discharge end of the second compressor is connected to the D3 and E3 ports of the third four-way valve, the partial heat recovery heat exchanger, the ninth one-way valve, and the fourth four-way valve D4, port C4, the second air-side finned heat exchanger, the second throttling device, the seventh one-way valve, the air-conditioning side heat exchanger, and the fourth four-way valve Ports E4 and S4, the second gas-liquid separator, and the suction end of the second compressor are sequentially connected; when both the third four-way valve and the fourth four-way valve are energized, the first The discharge end of the second compressor and the D3 and E3 ports of the third four-way valve, the partial heat recovery heat exchanger, the ninth one-way valve, the D4 and E4 ports of the fourth four-way valve, The air conditioner side heat exchanger, the third liquid reservoir, the eighth one-way valve, the second throttling device, the second air side finned heat exchanger, the fourth four The ports C4 and S4 of the through valve, the second gas-liquid separator, and the suction end of the second compressor are connected in sequence.

Preferably, the first refrigerant circulation system is provided with a solenoid valve and a first throttling device, and the solenoid valve and the first throttling device are connected in series and connected in parallel with the fifth one-way valve.

Preferably, the first throttling device is a capillary tube, a thermal expansion valve or an electronic expansion valve.

Preferably, the second throttling device is a capillary tube, a thermal expansion valve or an electronic expansion valve.

Preferably, a first fan is provided on one side of the first air-side finned heat exchanger, and a second fan is provided on one side of the second air-side finned heat exchanger.

On the other hand, the utility model also provides a heat recovery type air-cooled heat pump unit, including a first refrigerant circulation system and a second refrigerant circulation system;

The first refrigerant cycle system includes a first compressor, a first four-way valve, a second four-way valve, a first air-side finned heat exchanger, a first electronic expansion valve, a second electronic expansion valve, The first one-way valve, the second one-way valve, the third one-way valve, the fourth one-way valve, the fifth one-way valve, the air conditioner side heat exchanger, the first liquid reservoir, the second liquid reservoir, the first A gas-liquid separator, a total heat recovery heat exchanger, a hot water circulation pump, and an insulated water tank; the water inlet of the total heat recovery heat exchanger is connected to the water outlet of the insulated water tank through the hot water circulation pump, and the The water outlet of the total heat recovery heat exchanger is connected with the water inlet of the heat preservation water tank;

When neither the second four-way valve nor the first four-way valve is energized, the discharge end of the first compressor is connected to the D1 and C1 ports of the first four-way valve, the second four-way valve D2 and C2 ports of the valve, the first air-side finned heat exchanger, the first one-way valve, the second electronic expansion valve, the second one-way valve, the air-conditioning side heat exchanger device, the E2 and S2 ports of the second four-way valve, the first gas-liquid separator, and the suction end of the first compressor are sequentially connected; when the second four-way valve is energized and the first When the four-way valve is not powered, the discharge end of the first compressor exchanges heat with the D1 and C1 ports of the first four-way valve, the D2 and E2 ports of the second four-way valve, and the air conditioner side. device, the first liquid reservoir, the third one-way valve, the fourth one-way valve, the first electronic expansion valve, the first air-side finned heat exchanger, the first The C2 and S2 ports of the two four-way valves, the first gas-liquid separator, and the suction end of the first compressor are sequentially connected; when the first four-way valve is energized and the second four-way valve is not energized , the discharge end of the first compressor is connected to the D1 and E1 ports of the first four-way valve, the total heat recovery heat exchanger, the second liquid receiver, the fifth one-way valve, The second electronic expansion valve, the second one-way valve, the air conditioner side heat exchanger, the ports E2 and S2 of the second four-way valve, the first gas-liquid separator, the first The suction end of the compressor is connected sequentially; when both the second four-way valve and the first four-way valve are energized, the discharge end of the first compressor is connected to the D1 and E1 ports of the first four-way valve , the total heat recovery heat exchanger, the second liquid reservoir, the fifth check valve, the first electronic expansion valve, the first air-side finned heat exchanger, the second The C2 and S2 ports of the two four-way valves, the first gas-liquid separator, and the suction end of the first compressor are sequentially connected;

The second refrigerant cycle system includes a second compressor, a third four-way valve, a fourth four-way valve, a second air-side finned heat exchanger, a second throttling device, a sixth one-way valve, The seventh one-way valve, the eighth one-way valve, the ninth one-way valve, the air-conditioning side heat exchanger, the third liquid receiver, the second gas-liquid separator, part of the heat recovery heat exchanger and the heat preservation water tank; The water outlet of the heat recovery heat exchanger is connected to the water inlet of the heat preservation water tank, and the water inlet of the partial heat recovery heat exchanger is connected to the water outlet of the total heat recovery heat exchanger;

When neither the third four-way valve nor the fourth four-way valve is energized, the discharge end of the second compressor is connected to the D3 and C3 ports of the third four-way valve, the sixth one-way valve valve, D4 and C4 ports of the fourth four-way valve, the second air-side finned heat exchanger, the second throttling device, the seventh one-way valve, and the air-conditioning side heat exchanger device, the ports E4 and S4 of the fourth four-way valve, the second gas-liquid separator, and the suction end of the second compressor are sequentially connected; when the fourth four-way valve is energized and the first When the three or four way valves are not energized, the discharge end of the second compressor is connected to the D3 and C3 ports of the third four way valve, the sixth check valve, and the D4 and E4 ports of the fourth four way valve. port, the air conditioner side heat exchanger, the third liquid reservoir, the eighth check valve, the second throttling device, the second air side finned heat exchanger, the first The C4 and S4 ports of the four-way valve, the second gas-liquid separator, and the suction end of the second compressor are connected in sequence; when the third four-way valve is energized and the fourth four-way valve is not energized When, the discharge end of the second compressor is connected to the D3 and E3 ports of the third four-way valve, the partial heat recovery heat exchanger, the ninth one-way valve, and the fourth four-way valve D4, port C4, the second air-side finned heat exchanger, the second throttling device, the seventh one-way valve, the air-conditioning side heat exchanger, and the fourth four-way valve Ports E4 and S4, the second gas-liquid separator, and the suction end of the second compressor are sequentially connected; when both the third four-way valve and the fourth four-way valve are energized, the first The discharge end of the second compressor and the D3 and E3 ports of the third four-way valve, the partial heat recovery heat exchanger, the ninth one-way valve, the D4 and E4 ports of the fourth four-way valve, The air conditioner side heat exchanger, the third liquid reservoir, the eighth one-way valve, the second throttling device, the second air side finned heat exchanger, the fourth four The ports C4 and S4 of the through valve, the second gas-liquid separator, and the suction end of the second compressor are connected in sequence.

Preferably, the first refrigerant circulation system is provided with a solenoid valve and a first throttling device, and the solenoid valve and the first throttling device are connected in series and connected in parallel with the fifth one-way valve.

Preferably, the first throttling device is a capillary tube, a thermal expansion valve or an electronic expansion valve.

Preferably, the second throttling device is a capillary tube, a thermal expansion valve or an electronic expansion valve.

Preferably, a first fan is provided on one side of the first air-side finned heat exchanger, and a second fan is provided on one side of the second air-side finned heat exchanger.

Beneficial effects of the utility model: the heat recovery type air-cooled heat pump unit includes a first refrigerant circulation system and a second refrigerant circulation system, wherein the first refrigerant circulation system adopts a total heat recovery heat exchanger, and the second Part of the heat recovery heat exchanger is used in the two-refrigerant cycle system, which realizes the refrigerant system through the use of two refrigerant cycle systems, four four-way valves, multiple electronic expansion valves and multiple one-way valves. The switching of the middle pipeline and the two-stage adjustment function of the compressor not only enable the refrigerant to have multiple circulation modes, but also enable the air-conditioning system to realize all the condensation heat of the first refrigerant cycle system under the condition of running and using hot water. Or the recovery of partial condensation heat in the second refrigerant cycle system ensures the recovery and reuse of heat, improves thermal efficiency, and also enhances the hot water supply capacity of the air conditioning system. At the same time, through the control of the two four-way valves, two electronic expansion valves and multiple one-way valves in the first refrigerant cycle system, it can be realized in the air source water heater mode to solve the problem of not using the air conditioner in the transitional season. The function of providing domestic hot water can ensure the real-time supply of domestic hot water, which solves the problem of no domestic hot water supply in the transitional season of the partial heat recovery air-conditioning system in the prior art; through the second refrigerant circulation system The control of the two four-way valves and two one-way valves can further increase the temperature of the domestic hot water on the basis of the first refrigerant circulation system raising the temperature of the domestic hot water, so that the temperature of the domestic hot water can reach ≥65°C, and at the same time, it can solve the problem of full heat recovery air conditioning system with only a single heat recovery system in the prior art by splitting the condensation heat of heating. In the low ambient temperature in winter, an auxiliary heating device is needed to increase the temperature of domestic hot water defects, and the function of automatic adjustment can be realized completely according to the demand of air conditioner and hot water through the control of the computer; and the utility model avoids the use of multiple The structure controlled by the solenoid valve reduces the production cost as a whole. The utility model coordinates and controls the two refrigerant circulation systems, and at the same time utilizes the condensation heat more effectively, makes the production of domestic hot water reach a higher temperature and precisely controls the temperature of the heat preservation water tank, and realizes the energy recovery and reuse. It can be used to save energy; and it can realize the simultaneous production of air-conditioning heating and domestic hot water; it further solves the problem that the full heat recovery air-conditioning system of the single heat recovery system in the prior art cannot The problem of producing higher temperature domestic hot water. In addition, the utility model can add a solenoid valve and a throttling device in the first refrigerant circulation system, and connect the solenoid valve and the throttling device in series and in parallel with the fifth one-way valve, which can realize the elimination of The defrosting operating mode of the air conditioner heating mode and the domestic hot water mode can be selected by the user. This structure not only ensures the effective recovery and reuse of heat, but also protects the environment from heat pollution, environmental protection and energy saving, and has the trinity functions of cooling, heating, and real-time domestic hot water.

Description of drawings

Utilize accompanying drawing to further illustrate the utility model, but the embodiment in the accompanying drawing does not constitute any restriction to the present utility model, for those of ordinary skill in the art, under the premise of not paying creative work, also can obtain according to following accompanying drawing Additional drawings.

Fig. 1 is a structural schematic diagram of Embodiment 1 of a heat recovery type air-cooled heat pump unit of the present invention.

Fig. 2 is a structural schematic diagram of Embodiment 2 of a heat recovery type air-cooled heat pump unit of the present invention.

Fig. 3 is a structural schematic diagram of Embodiment 3 of a heat recovery type air-cooled heat pump unit of the present invention.

Fig. 4 is a structural schematic diagram of Embodiment 4 of a heat recovery type air-cooled heat pump unit of the present invention.

In Fig. 1, Fig. 2, Fig. 3 and Fig. 4, it includes: 100—the first refrigerant circulation system, 200—the second refrigerant circulation system, 1—the first compressor, 2—the first four-way Valve, 3—the first air-side finned heat exchanger, 4—the second four-way valve, 5—the first electronic expansion valve, 6—the first one-way valve, 7—solenoid valve, 8 ——the fifth one-way valve, 9——the first throttling device, 10——the second electronic expansion valve, 11——the fourth one-way valve, 12——the third one-way valve, 13——the first storage Liquid container, 14—second one-way valve, 15—air conditioner side heat exchanger, 16—seventh one-way valve, 17—eighth one-way valve, 18—third liquid reservoir, 19— —The second throttling device, 20—the fourth four-way valve, 21—the second air-side finned heat exchanger, 22—the sixth one-way valve, 23—the third four-way valve, 24— —Second compressor, 25—Second gas-liquid separator, 26—Ninth one-way valve, 27—Partial heat recovery heat exchanger, 28—Insulation water tank, 29—Hot water circulation pump, 30 - total heat recovery heat exchanger, 31 - the second liquid reservoir, 32 - the first gas-liquid separator.

Detailed ways

The utility model is further described in conjunction with the following examples.

Example 1

One of the specific implementations of a heat recovery type air-cooled heat pump unit of the present invention, as shown in FIG. 1 , includes a first refrigerant circulation system 100 and a second refrigerant circulation system 200 . The first refrigerant circulation system 100 and the second refrigerant circulation system 200 share the same heat exchanger 15 and heat preservation water tank 28 on the air-conditioning side. Among them, the full heat recovery heat exchanger 30 is used in the first refrigerant circulation system 100, and the partial heat recovery heat exchanger 27 is used in the second refrigerant circulation system 200. The utility model coordinates and controls the two refrigerant circulation systems , while making more effective use of condensation heat, the production of domestic hot water can reach a higher temperature and the temperature of the thermal insulation water tank 28 can be accurately controlled to achieve the purpose of reusing energy and saving energy; and it can realize air conditioning Simultaneous production of heat and domestic hot water; further solving the problem that the full heat recovery air-conditioning system of the single heat recovery system in the prior art cannot produce higher temperature domestic hot water when the ambient temperature is lower in winter. This structure not only ensures the effective recovery and reuse of heat, but also protects the environment from heat pollution, environmental protection and energy saving, and has the trinity functions of cooling, heating, and real-time domestic hot water.

Specifically, the first refrigerant cycle system 100 includes a first compressor 1 , a first four-way valve 2 , a second four-way valve 4 , a first air-side finned heat exchanger 3 , and a first electronic expansion valve 5 , the second electronic expansion valve 10, the first one-way valve 6, the second one-way valve 14, the third one-way valve 12, the fourth one-way valve 11, the fifth one-way valve 8, the air conditioner side heat exchanger 15, The first liquid reservoir 13, the second liquid reservoir 31, the first gas-liquid separator 32, the total heat recovery heat exchanger 30, the hot water circulation pump 29 and the heat preservation water tank 28; the water inlet of the total heat recovery heat exchanger 30 The hot water circulation pump 29 is connected to the water outlet of the heat preservation water tank 28 , and the water outlet of the total heat recovery heat exchanger 30 is connected to the water inlet of the heat preservation water tank 28 .

When neither the second four-way valve 4 nor the first four-way valve 2 is energized, the discharge end of the first compressor 1 is connected to the D1 and C1 ports of the first four-way valve 2 and the D2 and C2 ports of the second four-way valve 4 E2 of port, first air-side finned heat exchanger 3, first check valve 6, second electronic expansion valve 10, second check valve 14, air conditioner side heat exchanger 15, second four-way valve 4 , S2 port, the first gas-liquid separator 32, and the suction end of the first compressor 1 are sequentially connected.

When the second four-way valve 4 is energized and the first four-way valve 2 is not energized, the discharge end of the first compressor 1 is connected to the D1 and C1 ports of the first four-way valve 2 and the D2 and E2 ports of the second four-way valve 4 port, air conditioner side heat exchanger 15, first liquid reservoir 13, third one-way valve 12, fourth one-way valve 11, first electronic expansion valve 5, first air-side finned heat exchanger 3, second The C2 and S2 ports of the two four-way valves 4, the first gas-liquid separator 32, and the suction end of the first compressor 1 are sequentially connected.

When the first four-way valve 2 is energized and the second four-way valve 4 is not energized, the discharge end of the first compressor 1 is connected to the D1 and E1 ports of the first four-way valve 2, the total heat recovery heat exchanger 30, the second Liquid reservoir 31, fifth one-way valve 8, second electronic expansion valve 10, second one-way valve 14, air conditioner side heat exchanger 15, ports E2 and S2 of second four-way valve 4, first gas-liquid separation The device 32 and the suction end of the first compressor 1 are connected in sequence.

When both the second four-way valve 4 and the first four-way valve 2 are energized, the discharge end of the first compressor 1 is connected to the D1 and E1 ports of the first four-way valve 2, the total heat recovery heat exchanger 30, and the second storage tank. Liquid tank 31, fifth one-way valve 8, first electronic expansion valve 5, first air-side finned heat exchanger 3, ports C2 and S2 of the second four-way valve 4, first gas-liquid separator 32, The suction ends of the first compressor 1 are connected sequentially.

Specifically, the second refrigerant cycle system 200 includes a second compressor 24, a third four-way valve 23, a fourth four-way valve 20, a second air-side finned heat exchanger 21, and a second throttling device 19 , the sixth one-way valve 22, the seventh one-way valve 16, the eighth one-way valve 17, the ninth one-way valve 26, the air conditioner side heat exchanger 15, the third liquid reservoir 18, the second gas-liquid separator 25 , Partial heat recovery heat exchanger 27 and thermal insulation water tank 28;

When the third four-way valve 23 and the fourth four-way valve 20 are not energized, the discharge end of the second compressor 24 is connected to the D3 and C3 ports of the third four-way valve 23, the sixth one-way valve 22, the fourth four-way valve Ports D4 and C4 of the through valve 20, the second air-side finned heat exchanger 21, the second throttling device 19, the seventh one-way valve 16, the air-conditioning side heat exchanger 15, and E4 of the fourth four-way valve 20 , S4 port, the second gas-liquid separator 25, and the suction end of the second compressor 24 are sequentially connected.

When the fourth four-way valve 20 is energized and the third four-way valve 23 is not energized, the discharge end of the second compressor 24 is connected to the D3 and C3 ports of the third four-way valve 23, the sixth one-way valve 22, the fourth four-way valve D4 and E4 ports of the through valve 20, the air conditioner side heat exchanger 15, the third liquid reservoir 18, the eighth check valve 17, the second throttling device 19, the second air side finned heat exchanger 21, the first The C4 and S4 ports of the four-way valve 20, the second gas-liquid separator 25, and the suction end of the second compressor 24 are connected in sequence.

When the third four-way valve 23 is energized and the fourth four-way valve 20 is not energized, the discharge end of the second compressor 24 is connected to the D3 and E3 ports of the third four-way valve 23, part of the heat recovery heat exchanger 27, the ninth One-way valve 26, D4 and C4 ports of the fourth four-way valve 20, second air-side finned heat exchanger 21, second throttling device 19, seventh one-way valve 16, air-conditioning side heat exchanger 15, Ports E4 and S4 of the fourth four-way valve 20 , the second gas-liquid separator 25 , and the suction end of the second compressor 24 are sequentially connected.

When the third four-way valve 23 and the fourth four-way valve 20 are all energized, the discharge end of the second compressor 24 is connected to the D3 and E3 ports of the third four-way valve 23, part of the heat recovery heat exchanger 27, and the ninth unit Directional valve 26, D4 and E4 ports of the fourth four-way valve 20, air conditioner side heat exchanger 15, third liquid reservoir 18, eighth one-way valve 17, second throttling device 19, second air side fin Type heat exchanger 21, C4 and S4 ports of the fourth four-way valve 20, the second gas-liquid separator 25, and the suction end of the second compressor 24 are connected in sequence.

Specifically, the second throttling device 19 is a capillary tube, a thermal expansion valve or an electronic expansion valve.

Specifically, a first fan is provided on one side of the first air-side finned heat exchanger 3 .

Specifically, a second fan is provided on one side of the second air-side finned heat exchanger 21 .

The heat recovery type air-cooled heat pump unit of the utility model has four operation modes in total: air conditioning cooling mode, air conditioning heating mode, air conditioning cooling and heat recovery mode, and domestic hot water mode.

When the air-conditioning cooling mode is running, the first refrigerant circulation system 100 and the second refrigerant circulation system 200 are turned on at the same time. The low-temperature and low-pressure refrigerant vapor of the first refrigerant circulation system 100 is compressed by the first compressor 1 into high-temperature and high-pressure superheated vapor, flows to the first four-way valve 2, and then passes through the second four-way valve 4 (the first four-way valve at this time Both the through valve 2 and the second four-way valve 4 are not energized), and then flow to the first air-side finned heat exchanger 3 to exchange heat with the outdoor air. At the same time, the first air-side finned heat exchanger 3 The first fan is turned on, so that the refrigerant condenses into a medium-temperature and high-pressure liquid in the first air-side finned heat exchanger 3, and then passes through the first one-way valve 6 and the second electronic expansion valve 10 to become a low-temperature and low-pressure liquid. After passing through the second one-way valve 14, it enters the heat exchanger 15 on the air-conditioning side, exchanges heat with the air-conditioning water, and turns the air-conditioning water into a set temperature, and at the same time, the low-temperature and low-pressure liquid evaporates into a low-temperature and low-pressure gas, which flows to the second air-conditioning side. The four-way valve 4 finally flows back to the first compressor 1 through the first gas-liquid separator 32 to complete the entire refrigeration cycle; the low-temperature and low-pressure refrigerant vapor of the second refrigerant cycle system 200 is compressed into a high-temperature refrigerant by the second compressor 24 The high-pressure superheated steam flows to the third four-way valve 23, passes through the sixth one-way valve 22, and then flows to the fourth four-way valve 20 (at this time, the third four-way valve 23 and the fourth four-way valve 20 are not energized), Then flow to the second air-side finned heat exchanger 21 to exchange heat with the outdoor air. At the same time, the second fan of the second air-side finned heat exchanger 21 is turned on, so that the refrigerant flows through the second air-side finned heat exchanger 21. Type heat exchanger 21 condenses into medium temperature and high pressure liquid, and then passes through the second throttling device 19 to become low temperature and low pressure liquid, then passes through the seventh one-way valve 16, enters the air conditioner side heat exchanger 15, and heats up with the air conditioner water Exchange, and turn the air-conditioning water into the set temperature, and at the same time, the low-temperature and low-pressure liquid evaporates into a low-temperature and low-pressure gas, flows to the fourth four-way valve 20, and finally flows back to the second compressor 24 through the second gas-liquid separator 25, completing the entire refrigeration cycle. When the demand for cooling capacity is not large, the purpose of saving energy can be achieved by unloading the system with a long running time to maintain the output of the air conditioning load.

When the air conditioner is running in the heating mode, the first refrigerant circulation system 100 and the second refrigerant circulation system 200 are turned on at the same time. The low-temperature and low-pressure refrigerant vapor of the first refrigerant cycle system 100 is compressed by the first compressor 1 into high-temperature and high-pressure superheated vapor, flows to the first four-way valve 2, and then passes through the second four-way valve 4 (at this time, the second four-way valve 4 The through valve 4 is energized, the first four-way valve 2 is not energized), and then flows to the heat exchanger 15 on the air-conditioning side, exchanges heat with the air-conditioning water, and heats the air-conditioning water to the set temperature, and the refrigerant flows through the heat exchanger 15 on the air-conditioning side. 15 is condensed into a medium-temperature and high-pressure liquid, and then passes through the first liquid reservoir 13, the third one-way valve 12, the fourth one-way valve 11, and the first electronic expansion valve 5 to become a low-temperature and low-pressure liquid, and then enters the first The air-side finned heat exchanger 3 exchanges heat with the air, and at the same time, the low-temperature and low-pressure liquid evaporates into a low-temperature and low-pressure gas, flows to the second four-way valve 4, and finally flows back to the first compressor through the first gas-liquid separator 32 1. Complete the whole heating cycle. The low-temperature and low-pressure refrigerant vapor of the second refrigerant cycle system 200 is compressed by the second compressor 24 into high-temperature and high-pressure superheated vapor, flows to the third four-way valve 23, passes through the sixth one-way valve 22, and then flows through the fourth and fourth four-way valves. The through valve 20 (the fourth four-way valve 20 is energized at this time, and the third four-way valve 23 is not energized), and then flows to the air-conditioning side heat exchanger 15 to exchange heat with the air-conditioning water, and together with the first refrigerant circulation system 100 The air-conditioning water is heated to the set temperature, and the refrigerant is condensed into a medium-temperature and high-pressure liquid in the heat exchanger 15 on the air-conditioning side, and then passes through the third liquid reservoir 18, the eighth one-way valve 17, and the second throttling device in sequence. 19 becomes a low-temperature and low-pressure liquid, enters the fourth air-side finned heat exchanger, and exchanges heat with the air. The liquid separator 25 flows back to the second compressor 24 to complete the whole heating cycle. When the demand for heating capacity is not large, the purpose of saving energy can be achieved by unloading the system with a long running time to maintain the output of the air conditioning load.

When the air conditioner is running in refrigeration and heat recovery mode, the first refrigerant circulation system 100 and the second refrigerant circulation system 200 are turned on at the same time. The low-temperature and low-pressure refrigerant vapor of the first refrigerant circulation system 100 is compressed by the first compressor 1 into high-temperature and high-pressure superheated vapor, and flows to the first four-way valve 2 (at this time, the first four-way valve 2 is energized by the second four-way valve. 4 without electricity), and then flow to the total heat recovery heat exchanger 30, heat exchange with the domestic water in the thermal insulation water tank 28, and heat the domestic water, and the refrigerant is condensed into a medium-temperature and high-pressure liquid in the total heat recovery heat exchanger 30, Then respectively pass through the second liquid reservoir 31, the fifth one-way valve 8, and the second electronic expansion valve 10 to become low-temperature and low-pressure liquids, pass through the second one-way valve 14, enter the air-conditioning side heat exchanger 15, and connect with the air-conditioning water Carry out heat exchange, and turn the air-conditioning water into the set temperature, and at the same time, the low-temperature and low-pressure refrigerant liquid evaporates into a low-temperature and low-pressure gas, flows to the second four-way valve 4, and finally flows back to the first compressor through the first gas-liquid separator 32 Machine 1 completes the entire refrigeration and heat recovery cycle, heats the domestic water to the safe operating temperature of the first compressor 1, and launches this mode to switch to the air-conditioning refrigeration mode. The low-temperature and low-pressure refrigerant vapor of the second refrigerant circulation system 200 is compressed by the second compressor 24 into high-temperature and high-pressure superheated vapor, and flows to the third four-way valve 23 (at this time, the third four-way valve 23 is energized and the fourth four-way valve 20 without electricity), and then flow to part of the heat recovery heat exchanger 27, heat exchange with the domestic water in the thermal water tank 28, and heat the domestic water, and then respectively pass through the ninth one-way valve 26, the fourth four-way valve 20, The second air-side finned heat exchanger 21 performs heat exchange with the outdoor air, and the second fan of the second air-side finned heat exchanger 21 is turned on so that the refrigerant flows in the second air-side finned heat exchanger. 21 is condensed into medium-temperature and high-pressure liquid, passes through the second throttling device 19 and becomes low-temperature and low-pressure liquid, passes through the seventh check valve 16, enters the air-conditioning side heat exchanger 15, exchanges heat with the air-conditioning water, and transfers the air-conditioning water At the same time, the low-temperature and low-pressure refrigerant liquid evaporates into a low-temperature and low-pressure gas, flows to the fourth four-way valve 20, and finally flows back to the second compressor 24 through the second gas-liquid separator 25 to complete the entire cooling and heating process. Recycling cycle, when the domestic water is heated to a set temperature, this mode is released and turned into an air-conditioning cooling mode. The operation of the unit can be intelligently controlled through the calculation of the air-conditioning and hot water loads by the controller of the unit.

When the domestic hot water mode is running, the first refrigerant circulation system 100 is turned on, and the low-temperature and low-pressure refrigerant vapor in the first refrigerant circulation system 100 is compressed by the first compressor 1 into high-temperature and high-pressure superheated vapor, which flows to the first four-way valve 2 (at this time, the first four-way valve 2 and the second four-way valve 4 are both energized), and then flow to the total heat recovery heat exchanger 30 to exchange heat with the domestic water in the thermal insulation water tank 28, and heat the domestic water, and the refrigerant It is condensed into medium-temperature and high-pressure liquid in the total heat recovery heat exchanger 30, and then successively passes through the second liquid reservoir 31, the fifth one-way valve 8, and the first electronic expansion valve 5 to become a low-temperature and low-pressure liquid, and then enters the first An air-side finned heat exchanger 3, which exchanges heat with the outdoor air, and at the same time, the low-temperature and low-pressure liquid evaporates into a low-temperature and low-pressure gas, flows to the second four-way valve 4, and finally flows back to the first gas-liquid separator 32 through the first Compressor 1 completes the entire domestic hot water cycle.

Users can choose different operating modes of the air-conditioning system according to different seasons. For example, in summer, when users have both air-conditioning needs and hot water needs, they can run the air-conditioning cooling and heat recovery operating modes. The set air-conditioning temperature and domestic hot water temperature are intelligently operated among the air-conditioning refrigeration mode, air-conditioning refrigeration and heat recovery mode, and domestic hot water mode, thereby realizing the effect of energy saving. In winter, the user can adopt the automatic mode of air conditioning heating and domestic hot water, and intelligently switch between the air conditioning heating mode and domestic hot water mode through the microcomputer controller, and operate in different time periods to meet the needs of air conditioning and hot water.

The total heat recovery air-cooled heat pump unit in this embodiment has a defrosting operation mode: an air-conditioning heating mode and a defrosting operation mode.

During the defrosting operation in the air conditioner heating mode, the first refrigerant circulation system 100 or the second refrigerant circulation system 200 is turned on. The low-temperature and low-pressure refrigerant vapor of the first refrigerant circulation system 100 is compressed by the first compressor 1 into high-temperature and high-pressure superheated vapor, flows to the first four-way valve 2, and then passes through the second four-way valve 4 (the first four-way valve at this time Both the through valve 2 and the second four-way valve 4 are not energized), and then flow to the first air-side finned heat exchanger 3 to exchange heat with the outdoor air. At the same time, the first air-side finned heat exchanger 3 The first fan is not turned on, so that the refrigerant condenses into a medium-temperature and high-pressure liquid in the first air-side finned heat exchanger 3, and then passes through the first one-way valve 6 and the second electronic expansion valve 10 to become a low-temperature and low-pressure liquid , and then through the second one-way valve 14, enter the heat exchanger 15 on the air-conditioning side, exchange heat with the air-conditioning water, and change the air-conditioning water to the set temperature, and at the same time, the low-temperature and low-pressure liquid evaporates into a low-temperature and low-pressure gas, which flows to the second The second four-way valve 4, finally flows back to the first compressor 1 through the first gas-liquid separator 32, and completes the refrigerant cycle of the defrosting operation of the entire air-conditioning and heating mode; the low-temperature and low-pressure refrigerant of the second refrigerant cycle system 200 The steam is compressed into high-temperature and high-pressure superheated steam through the second compressor 24, flows to the third four-way valve 23, passes through the sixth one-way valve 22, and then flows to the fourth four-way valve 20 (at this moment, the third four-way valve 23 and the first four-way valve All four and four way valves 20 are not energized), and then flow to the second air-side finned heat exchanger 21 to exchange heat with the outdoor air. At the same time, the second fan of the second air-side finned heat exchanger 21 is not turned on. , so that the refrigerant condenses into a medium-temperature and high-pressure liquid in the second air-side finned heat exchanger 21, and then passes through the second throttling device 19 to become a low-temperature and low-pressure liquid, and then passes through the seventh one-way valve 16 to enter the air conditioner. The side heat exchanger 15 performs heat exchange with the air-conditioning water, and turns the air-conditioning water to the set temperature. At the same time, the low-temperature and low-pressure liquid evaporates into a low-temperature and low-pressure gas, flows to the fourth four-way valve 20, and finally passes through the second gas-liquid separation The compressor 25 flows back to the second compressor 24 to complete the refrigerant cycle in the defrosting operation of the entire air conditioner and heating mode.

Example 2

The second specific embodiment of a heat recovery type air-cooled heat pump unit of the present utility model is shown in Figure 2. The main technical solution of this embodiment is the same as that of Embodiment 1. The features not explained in this embodiment are adopted The explanation in Embodiment 1 will not be repeated here, and the components in FIG. 2 that are the same as those in FIG. 1 use the same symbols. The difference between this embodiment and Embodiment 1 is that part of the heat recovery heat exchanger 27 in the second refrigerant circulation system 200 is placed outside the heat preservation water tank 28 .

Specifically, the second refrigerant cycle system 200 includes a second compressor 24, a third four-way valve 23, a fourth four-way valve 20, a second air-side finned heat exchanger 21, and a second throttling device 19 , the sixth one-way valve 22, the seventh one-way valve 16, the eighth one-way valve 17, the ninth one-way valve 26, the air conditioner side heat exchanger 15, the third liquid reservoir 18, the second gas-liquid separator 25 , part heat recovery heat exchanger 27 and heat preservation water tank 28; the water outlet of part heat recovery heat exchanger 27 is connected with the water inlet of heat preservation water tank 28, and the water inlet of part heat recovery heat exchanger 27 is connected with the total heat recovery heat exchanger 30 outlets are connected.

Example 3

The third specific embodiment of a heat recovery type air-cooled heat pump unit of the present invention is shown in Figure 3. The main technical solution of this embodiment is the same as that of Embodiment 1. The features not explained in this embodiment are adopted The explanation in Embodiment 1 will not be repeated here, and the components in FIG. 3 that are the same as those in FIG. 1 use the same symbols. The difference between this embodiment and Embodiment 1 is that the first refrigerant cycle system 100 is provided with a solenoid valve 7 and a first throttling device 9, and the solenoid valve 7 and the first throttling device 9 are connected in series and connected with the fifth one-way The valves 8 are connected in parallel. Adding the solenoid valve 7 and the throttling device 9 can realize the defrosting operation in the air-conditioning and heating mode, and the domestic hot water mode defrosting operation mode can be selected by the user.

Specifically, the first throttling device 9 is a capillary tube, a thermal expansion valve or an electronic expansion valve.

The total heat recovery air-cooled heat pump unit in this embodiment has two defrosting operation modes: air-conditioning heating mode defrosting operation mode and domestic hot water mode defrosting operation mode.

During the defrosting operation in the air conditioner heating mode, the first refrigerant circulation system 100 or the second refrigerant circulation system 200 is turned on. The low-temperature and low-pressure refrigerant vapor of the first refrigerant circulation system 100 is compressed by the first compressor 1 into high-temperature and high-pressure superheated vapor, flows to the first four-way valve 2, and then passes through the second four-way valve 4 (the first four-way valve at this time Both the through valve 2 and the second four-way valve 4 are not energized), and then flow to the first air-side finned heat exchanger 3 to exchange heat with the outdoor air. At the same time, the first air-side finned heat exchanger 3 The first fan is not turned on, so that the refrigerant condenses into a medium-temperature and high-pressure liquid in the first air-side finned heat exchanger 3, and then passes through the first one-way valve 6 and the second electronic expansion valve 10 to become a low-temperature and low-pressure liquid , and then through the second one-way valve 14, enter the heat exchanger 15 on the air-conditioning side, exchange heat with the air-conditioning water, and change the air-conditioning water to the set temperature, and at the same time, the low-temperature and low-pressure liquid evaporates into a low-temperature and low-pressure gas, which flows to the second The second four-way valve 4, finally flows back to the first compressor 1 through the first gas-liquid separator 32, and completes the refrigerant cycle of the defrosting operation of the entire air-conditioning and heating mode; the low-temperature and low-pressure refrigerant of the second refrigerant cycle system 200 The steam is compressed into high-temperature and high-pressure superheated steam through the second compressor 24, flows to the third four-way valve 23, passes through the sixth one-way valve 22, and then flows to the fourth four-way valve 20 (at this moment, the third four-way valve 23 and the first four-way valve All four and four way valves 20 are not energized), and then flow to the second air-side finned heat exchanger 21 to exchange heat with the outdoor air. At the same time, the second fan of the second air-side finned heat exchanger 21 is not turned on. , so that the refrigerant condenses into a medium-temperature and high-pressure liquid in the second air-side finned heat exchanger 21, and then passes through the second throttling device 19 to become a low-temperature and low-pressure liquid, and then passes through the seventh one-way valve 16 to enter the air conditioner. The side heat exchanger 15 performs heat exchange with the air-conditioning water, and turns the air-conditioning water to the set temperature. At the same time, the low-temperature and low-pressure liquid evaporates into a low-temperature and low-pressure gas, flows to the fourth four-way valve 20, and finally passes through the second gas-liquid separation The compressor 25 flows back to the second compressor 24 to complete the refrigerant cycle in the defrosting operation of the entire air conditioner and heating mode.

During defrosting operation in domestic hot water mode, the low-temperature and low-pressure refrigerant vapor of the first refrigerant circulation system 100 is compressed by the first compressor 1 into high-temperature and high-pressure superheated vapor, flows to the first four-way valve 2, and then passes through the second four-way valve 2. The through valve 4 (the first four-way valve 2 and the second four-way valve 4 are not energized at this time), and then flows to the first air-side finned heat exchanger 3 to exchange heat with the outdoor air. At the same time, the first air The first fan of the side-fin heat exchanger 3 is not turned on, so that the refrigerant condenses into a medium-temperature and high-pressure liquid in the first air-side fin heat exchanger 3, passes through the first one-way valve 6, and then passes through the solenoid valve 7. The first throttling device 9 turns into a low-temperature and low-pressure liquid, and then passes through the second liquid reservoir 31 and enters the total heat recovery device 30 on the domestic hot water side to exchange heat with the domestic hot water. At the same time, the low-temperature and low-pressure liquid evaporates into The low-temperature and low-pressure gas flows to the first four-way valve 2, and finally flows back to the first compressor 1 through the first gas-liquid separator 32 to complete the refrigerant cycle of the whole domestic hot water mode defrosting operation.

Example 4

The fourth specific embodiment of a heat recovery type air-cooled heat pump unit of the present utility model, as shown in Figure 4, the main technical solution of this embodiment is the same as that of Embodiment 2, and the features not explained in this embodiment are adopted The explanation in Embodiment 2 will not be repeated here, and the components in FIG. 4 that are the same as in FIG. 2 use the same symbols. The difference between this embodiment and Embodiment 2 is that the first refrigerant cycle system 100 is provided with a solenoid valve 7 and a first throttling device 9, and the solenoid valve 7 and the first throttling device 9 are connected in series and connected with the fifth one-way The valves 8 are connected in parallel. Adding the solenoid valve 7 and the throttling device 9 can realize the defrosting operation in the air-conditioning and heating mode, and the domestic hot water mode defrosting operation mode can be selected by the user.

Specifically, the second throttling device 19 is a capillary tube, a thermal expansion valve or an electronic expansion valve.

The total heat recovery air-cooled heat pump unit in this embodiment has two defrosting operation modes: air-conditioning heating mode defrosting operation mode and domestic hot water mode defrosting operation mode.

During the defrosting operation in the air conditioner heating mode, the first refrigerant circulation system 100 or the second refrigerant circulation system 200 is turned on. The low-temperature and low-pressure refrigerant vapor of the first refrigerant circulation system 100 is compressed by the first compressor 1 into high-temperature and high-pressure superheated vapor, flows to the first four-way valve 2, and then passes through the second four-way valve 4 (the first four-way valve at this time Both the through valve 2 and the second four-way valve 4 are not energized), and then flow to the first air-side finned heat exchanger 3 to exchange heat with the outdoor air. At the same time, the first air-side finned heat exchanger 3 The first fan is not turned on, so that the refrigerant condenses into a medium-temperature and high-pressure liquid in the first air-side finned heat exchanger 3, and then passes through the first one-way valve 6 and the second electronic expansion valve 10 to become a low-temperature and low-pressure liquid , and then through the second one-way valve 14, enter the heat exchanger 15 on the air-conditioning side, exchange heat with the air-conditioning water, and change the air-conditioning water to the set temperature, and at the same time, the low-temperature and low-pressure liquid evaporates into a low-temperature and low-pressure gas, which flows to the second The second four-way valve 4, finally flows back to the first compressor 1 through the first gas-liquid separator 32, and completes the refrigerant cycle of the defrosting operation of the entire air-conditioning and heating mode; the low-temperature and low-pressure refrigerant of the second refrigerant cycle system 200 The steam is compressed into high-temperature and high-pressure superheated steam through the second compressor 24, flows to the third four-way valve 23, passes through the sixth one-way valve 22, and then flows to the fourth four-way valve 20 (at this moment, the third four-way valve 23 and the first four-way valve All four and four way valves 20 are not energized), and then flow to the second air-side finned heat exchanger 21 to exchange heat with the outdoor air. At the same time, the second fan of the second air-side finned heat exchanger 21 is not turned on. , so that the refrigerant condenses into a medium-temperature and high-pressure liquid in the second air-side finned heat exchanger 21, and then passes through the second throttling device 19 to become a low-temperature and low-pressure liquid, and then passes through the seventh one-way valve 16 to enter the air conditioner. The side heat exchanger 15 performs heat exchange with the air-conditioning water, and turns the air-conditioning water to the set temperature. At the same time, the low-temperature and low-pressure liquid evaporates into a low-temperature and low-pressure gas, flows to the fourth four-way valve 20, and finally passes through the second gas-liquid separation The compressor 25 flows back to the second compressor 24 to complete the refrigerant cycle in the defrosting operation of the entire air conditioner and heating mode.

During defrosting operation in domestic hot water mode, the low-temperature and low-pressure refrigerant vapor of the first refrigerant circulation system 100 is compressed by the first compressor 1 into high-temperature and high-pressure superheated vapor, flows to the first four-way valve 2, and then passes through the second four-way valve 2. The through valve 4 (the first four-way valve 2 and the second four-way valve 4 are not energized at this time), and then flows to the first air-side finned heat exchanger 3 to exchange heat with the outdoor air. At the same time, the first air The first fan of the side-fin heat exchanger 3 is not turned on, so that the refrigerant condenses into a medium-temperature and high-pressure liquid in the first air-side fin heat exchanger 3, passes through the first one-way valve 6, and then passes through the solenoid valve 7. The first throttling device 9 turns into a low-temperature and low-pressure liquid, and then passes through the second liquid reservoir 31 and enters the total heat recovery device 30 on the domestic hot water side to exchange heat with the domestic hot water. At the same time, the low-temperature and low-pressure liquid evaporates into The low-temperature and low-pressure gas flows to the first four-way valve 2, and finally flows back to the first compressor 1 through the first gas-liquid separator 32 to complete the refrigerant cycle of the whole domestic hot water mode defrosting operation.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting the protection scope of the present utility model. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art Personnel should understand that the technical solution of the utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solution of the utility model.

Claims (10)

1. a recovery type heat Air-Cooled Heat Pump Unit is characterized in that: include first refrigerant-cycle systems and second refrigerant-cycle systems;

Described first refrigerant-cycle systems includes first compressor, first cross valve, second cross valve, the first air side fins formula heat exchanger, first electric expansion valve, second electric expansion valve, first check valve, second check valve, the 3rd check valve, the 4th check valve, the 5th check valve, air-conditioning side heat exchanger, first reservoir, second reservoir, first gas-liquid separator, full heat recovering heat exchanger, hot-water circulating pump and attemperater; The water inlet of described full heat recovering heat exchanger is connected with the delivery port of described attemperater by described hot-water circulating pump, and the delivery port of described full heat recovering heat exchanger is connected with the water inlet of described attemperater;

When described second cross valve and described first cross valve all during no power, the suction side of the E2 of the D2 of the D1 of the outlet side of described first compressor and described first cross valve, C1 port, described second cross valve, C2 port, the described first air side fins formula heat exchanger, described first check valve, described second electric expansion valve, described second check valve, described air-conditioning side heat exchanger, described second cross valve, S2 port, described first gas-liquid separator, described first compressor joins successively; When the energising of described second cross valve and during the described first cross valve no power, the suction side of the C2 of the D2 of the D1 of the outlet side of described first compressor and described first cross valve, C1 port, described second cross valve, E2 port, described air-conditioning side heat exchanger, described first reservoir, described the 3rd check valve, described the 4th check valve, described first electric expansion valve, the described first air side fins formula heat exchanger, described second cross valve, S2 port, described first gas-liquid separator, described first compressor is connected successively; When the energising of described first cross valve and during the described second cross valve no power, the suction side of the E2 of the D1 of the outlet side of described first compressor and described first cross valve, e1 port, described full heat recovering heat exchanger, described second reservoir, described the 5th check valve, described second electric expansion valve, described second check valve, described air-conditioning side heat exchanger, described second cross valve, S2 port, described first gas-liquid separator, described first compressor is connected successively; When described second cross valve and described first cross valve were all switched on, the suction side of the C2 of the D1 of the outlet side of described first compressor and described first cross valve, e1 port, described full heat recovering heat exchanger, described second reservoir, described the 5th check valve, described first electric expansion valve, the described first air side fins formula heat exchanger, described second cross valve, S2 port, described first gas-liquid separator, described first compressor was connected successively;

Described second refrigerant-cycle systems includes second compressor, the 3rd cross valve, the 4th cross valve, the second air side fins formula heat exchanger, second throttling arrangement, the 6th check valve, the 7th check valve, the 8th check valve, the 9th check valve, air-conditioning side heat exchanger, the 3rd reservoir, second gas-liquid separator, part heat recovering heat exchanger and attemperater; Described part heat recovering heat exchanger is arranged in the described attemperater;

When described the 3rd cross valve and described the 4th cross valve all during no power, the suction side of the E4 of the D4 of the D3 of the outlet side of described second compressor and described the 3rd cross valve, C3 port, described the 6th check valve, described the 4th cross valve, C4 port, the described second air side fins formula heat exchanger, described second throttling arrangement, described the 7th check valve, described air-conditioning side heat exchanger, described the 4th cross valve, S4 port, described second gas-liquid separator, described second compressor joins successively; When the energising of described the 4th cross valve and during described the 3rd cross valve no power, the suction side of the C4 of the D4 of the D3 of the outlet side of described second compressor and described the 3rd cross valve, C3 port, described the 6th check valve, described the 4th cross valve, E4 port, described air-conditioning side heat exchanger, described the 3rd reservoir, described the 8th check valve, described second throttling arrangement, the described second air side fins formula heat exchanger, described the 4th cross valve, S4 port, described second gas-liquid separator, described second compressor is connected successively; When the energising of described the 3rd cross valve and during described the 4th cross valve no power, the suction side of the E4 of the D4 of the D3 of the outlet side of described second compressor and described the 3rd cross valve, E3 port, described part heat recovering heat exchanger, described the 9th check valve, described the 4th cross valve, C4 port, the described second air side fins formula heat exchanger, described second throttling arrangement, described the 7th check valve, described air-conditioning side heat exchanger, described the 4th cross valve, S4 port, described second gas-liquid separator, described second compressor joins successively; When described the 3rd cross valve and described the 4th cross valve were all switched on, the suction side of the C4 of the D4 of the D3 of the outlet side of described second compressor and described the 3rd cross valve, E3 port, described part heat recovering heat exchanger, described the 9th check valve, described the 4th cross valve, E4 port, described air-conditioning side heat exchanger, described the 3rd reservoir, described the 8th check valve, described second throttling arrangement, the described second air side fins formula heat exchanger, described the 4th cross valve, S4 port, described second gas-liquid separator, described second compressor was connected successively.

2. recovery type heat Air-Cooled Heat Pump Unit according to claim 1, it is characterized in that: described first refrigerant-cycle systems is provided with magnetic valve and first throttle device, and described magnetic valve and described first throttle device are connected in series and are connected in parallel with described the 5th check valve.

3. recovery type heat Air-Cooled Heat Pump Unit according to claim 2 is characterized in that: described first throttle device is capillary, heating power expansion valve or electric expansion valve.

4. according to claim 1 or 2 or 3 described recovery type heat Air-Cooled Heat Pump Unit, it is characterized in that: described second throttling arrangement is capillary, heating power expansion valve or electric expansion valve.

5. recovery type heat Air-Cooled Heat Pump Unit according to claim 1 is characterized in that: a side of the described first air side fins formula heat exchanger is provided with first blower fan, and a side of the described second air side fins formula heat exchanger is provided with second blower fan.

6. a recovery type heat Air-Cooled Heat Pump Unit is characterized in that: include first refrigerant-cycle systems and second refrigerant-cycle systems;

Described first refrigerant-cycle systems includes first compressor, first cross valve, second cross valve, the first air side fins formula heat exchanger, first electric expansion valve, second electric expansion valve, first check valve, second check valve, the 3rd check valve, the 4th check valve, the 5th check valve, air-conditioning side heat exchanger, first reservoir, second reservoir, first gas-liquid separator, full heat recovering heat exchanger, hot-water circulating pump and attemperater; The water inlet of described full heat recovering heat exchanger is connected with the delivery port of described attemperater by described hot-water circulating pump, and the delivery port of described full heat recovering heat exchanger is connected with the water inlet of described attemperater;

When described second cross valve and described first cross valve all during no power, the suction side of the E2 of the D2 of the D1 of the outlet side of described first compressor and described first cross valve, C1 port, described second cross valve, C2 port, the described first air side fins formula heat exchanger, described first check valve, described second electric expansion valve, described second check valve, described air-conditioning side heat exchanger, described second cross valve, S2 port, described first gas-liquid separator, described first compressor joins successively; When the energising of described second cross valve and during the described first cross valve no power, the suction side of the C2 of the D2 of the D1 of the outlet side of described first compressor and described first cross valve, C1 port, described second cross valve, E2 port, described air-conditioning side heat exchanger, described first reservoir, described the 3rd check valve, described the 4th check valve, described first electric expansion valve, the described first air side fins formula heat exchanger, described second cross valve, S2 port, described first gas-liquid separator, described first compressor is connected successively; When the energising of described first cross valve and during the described second cross valve no power, the suction side of the E2 of the D1 of the outlet side of described first compressor and described first cross valve, e1 port, described full heat recovering heat exchanger, described second reservoir, described the 5th check valve, described second electric expansion valve, described second check valve, described air-conditioning side heat exchanger, described second cross valve, S2 port, described first gas-liquid separator, described first compressor is connected successively; When described second cross valve and described first cross valve were all switched on, the suction side of the C2 of the D1 of the outlet side of described first compressor and described first cross valve, e1 port, described full heat recovering heat exchanger, described second reservoir, described the 5th check valve, described first electric expansion valve, the described first air side fins formula heat exchanger, described second cross valve, S2 port, described first gas-liquid separator, described first compressor was connected successively;

Described second refrigerant-cycle systems includes second compressor, the 3rd cross valve, the 4th cross valve, the second air side fins formula heat exchanger, second throttling arrangement, the 6th check valve, the 7th check valve, the 8th check valve, the 9th check valve, air-conditioning side heat exchanger, the 3rd reservoir, second gas-liquid separator, part heat recovering heat exchanger and attemperater; The delivery port of described part heat recovering heat exchanger is connected with the water inlet of described attemperater, and the water inlet of described part heat recovering heat exchanger is connected with the delivery port of described full heat recovering heat exchanger;

When described the 3rd cross valve and described the 4th cross valve all during no power, the suction side of the E4 of the D4 of the D3 of the outlet side of described second compressor and described the 3rd cross valve, C3 port, described the 6th check valve, described the 4th cross valve, C4 port, the described second air side fins formula heat exchanger, described second throttling arrangement, described the 7th check valve, described air-conditioning side heat exchanger, described the 4th cross valve, S4 port, described second gas-liquid separator, described second compressor joins successively; When the energising of described the 4th cross valve and during described the 3rd cross valve no power, the suction side of the C4 of the D4 of the D3 of the outlet side of described second compressor and described the 3rd cross valve, C3 port, described the 6th check valve, described the 4th cross valve, E4 port, described air-conditioning side heat exchanger, described the 3rd reservoir, described the 8th check valve, described second throttling arrangement, the described second air side fins formula heat exchanger, described the 4th cross valve, S4 port, described second gas-liquid separator, described second compressor is connected successively; When the energising of described the 3rd cross valve and during described the 4th cross valve no power, the suction side of the E4 of the D4 of the D3 of the outlet side of described second compressor and described the 3rd cross valve, E3 port, described part heat recovering heat exchanger, described the 9th check valve, described the 4th cross valve, C4 port, the described second air side fins formula heat exchanger, described second throttling arrangement, described the 7th check valve, described air-conditioning side heat exchanger, described the 4th cross valve, S4 port, described second gas-liquid separator, described second compressor joins successively; When described the 3rd cross valve and described the 4th cross valve were all switched on, the suction side of the C4 of the D4 of the D3 of the outlet side of described second compressor and described the 3rd cross valve, E3 port, described part heat recovering heat exchanger, described the 9th check valve, described the 4th cross valve, E4 port, described air-conditioning side heat exchanger, described the 3rd reservoir, described the 8th check valve, described second throttling arrangement, the described second air side fins formula heat exchanger, described the 4th cross valve, S4 port, described second gas-liquid separator, described second compressor was connected successively.

7. recovery type heat Air-Cooled Heat Pump Unit according to claim 6, it is characterized in that: described first refrigerant-cycle systems is provided with magnetic valve and first throttle device, and described magnetic valve and described first throttle device are connected in series and are connected in parallel with described the 5th check valve.

8. recovery type heat Air-Cooled Heat Pump Unit according to claim 7 is characterized in that: described first throttle device is capillary, heating power expansion valve or electric expansion valve.

9. according to claim 6 or 7 or 8 described recovery type heat Air-Cooled Heat Pump Unit, it is characterized in that: described second throttling arrangement is capillary, heating power expansion valve or electric expansion valve.

10. recovery type heat Air-Cooled Heat Pump Unit according to claim 6 is characterized in that: a side of the described first air side fins formula heat exchanger is provided with first blower fan, and a side of the described second air side fins formula heat exchanger is provided with second blower fan.

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