Heat pump unit

Abstract

The utility model discloses heat pump unit, include: outdoor heat exchanger, air conditioner heat exchanger and hot -water heat exchange pipe, and the outdoor heat exchanger is located in outdoor unit, and the upper portion of outdoor heat exchanger is equipped with spray device, and air conditioner heat exchanger has the coolant heat exchange pipe and air conditioner water heat exchange pipe of mutual heat exchange, and the coolant heat exchange pipe is connected outdoor heat exchanger, and air conditioner water heat exchange pipe connects air conditioner end, and hot -water heat exchange pipe is used to supply heat to hot -water tank, the panel of outdoor unit is installed with solar heating pipe, and solar heating pipe can switch at least one of hot -water heat exchange pipe, air conditioner water heat exchange pipe and spray device. The utility model discloses the solar heating pipe of outdoor unit shell arrangement of heat pump unit, and the heat of solar heating pipe is used to make domestic hot water, preheats the hot water of heating, or sprays outdoor heat exchanger and defrosts, and the structure is compact, and the space occupation is small, and energy utilization efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of hot water unit technology, and in particular to a heat pump unit coupled with a solar heating tube. Background Technology

[0002] Traditional air source heat pump units face significant challenges in building heating and cooling applications. Their energy efficiency and comfort are severely constrained by environmental conditions. During low-temperature heating, frequent evaporator frosting leads to periodic shutdowns for defrosting, which not only causes energy efficiency degradation but also causes fluctuations in hot water temperature, directly affecting the user experience. During high-temperature cooling, the condensing temperature rises, causing a surge in compressor power consumption and a significant decrease in the energy efficiency ratio.

[0003] Existing improvement solutions, such as solar-assisted systems, attempt to integrate energy by using solar collectors to provide hot water to the spray system for defrosting, so that defrosting can be performed without stopping heating. However, the independently installed solar collectors occupy additional space, the complicated piping increases the risk of failure, and the separation of the solar collectors from the heat pump unit leads to low energy transfer efficiency and low overall energy utilization.

[0004] Therefore, optimizing the installation method and energy utilization rate of heat pump units and solar heating tubes, based on the coupling of solar heating tubes, is a technical problem that the industry urgently needs to solve. Utility Model Content

[0005] To address the shortcomings of existing technologies, such as large space occupation and low efficiency, this utility model proposes a heat pump unit. Solar heating tubes are arranged on the outdoor unit casing of the heat pump unit. The heat absorbed by the solar heating tubes is used to produce domestic hot water, preheat hot water, or spray the outdoor heat exchanger for defrosting. The structure is compact, occupies little space, and has high energy utilization efficiency.

[0006] The technical solution adopted in this utility model is to design a heat pump unit, including: an outdoor heat exchanger, an air conditioning heat exchanger, and a hot water heat exchange pipe. The outdoor heat exchanger is located inside the outdoor unit, and a spray device is provided above the outdoor heat exchanger. The air conditioning heat exchanger has a refrigerant heat exchange pipe and an air conditioning water heat exchange pipe for mutual heat exchange. The refrigerant heat exchange pipe is connected to the outdoor heat exchanger, and the air conditioning water heat exchange pipe is connected to the air conditioning terminal. The hot water heat exchange pipe is used to supply heat to the hot water tank. A solar heating pipe is installed on the panel of the outdoor unit. The solar heating pipe can switch between connecting to at least one of the hot water heat exchange pipe, the air conditioning water heat exchange pipe, and the spray device.

[0007] Furthermore, the heat pump unit also includes a water collection tray located below the outdoor heat exchanger, which can be switched to connect to a hot water heat exchange pipe or a spray device.

[0008] Furthermore, the inlet section of the air conditioning water heat exchanger is divided into an upstream inlet section and a downstream inlet section, which can be connected by an intermediate connecting section; the solar heating pipe can be switched to connect at least one of the hot water heat exchanger, the upstream inlet section, the downstream inlet section, and the spray device; the water receiving tray can be switched to connect at least one of the hot water heat exchanger, the spray device, and the downstream inlet section.

[0009] Furthermore, the operating states of the heat pump unit include at least one of the following: solar water heating, solar water heating plus spray defrosting, heating without stopping plus spray defrosting, cooling spray cooling plus water heating, cooling plus spray cooling, solar preheating plus heating, spray water replenishment, and condensate recovery.

[0010] When the heat pump unit is in solar water heating mode, the solar heating tube is connected in series between the outlet and inlet of the hot water heat exchange tube.

[0011] And / or when the heat pump unit is in the solar hot water production plus spray defrosting mode, the solar heating tube is connected in series between the water inlet end of the spray device and the water outlet end of the hot water heat exchange tube, and the water receiving pan is connected to the water inlet end of the hot water heat exchange tube.

[0012] And / or when the heat pump unit is in heating mode without stopping and defrosting with spray, the heat pump unit is in heating mode, the upstream and downstream inlet sections of the air conditioning water heat exchanger are connected through an intermediate connecting section, the solar heating tube is connected in series between the outlet end of the hot water heat exchanger and the spray device, and the water receiving pan is connected to the inlet end of the hot water heat exchanger.

[0013] And / or when the heat pump unit is in the cooling spray cooling and hot water production mode, the heat pump unit is in cooling operation, the upstream inlet section and the downstream inlet section of the air conditioning water heat exchange pipe are connected through the intermediate connection section, the solar heating pipe is connected in series between the outlet end and the inlet end of the hot water heat exchange pipe, and the water receiving tray is connected to the spray device.

[0014] And / or when the heat pump unit is in cooling plus spray cooling mode, the heat pump unit is in cooling operation, the upstream inlet section and the downstream inlet section of the air conditioning water heat exchange tube are connected through the intermediate connection section, and the water receiving pan is connected to the spray device.

[0015] And / or when the heat pump unit is in solar preheating and heating mode, the heat pump unit is in heating mode, and the solar heating tube is connected in series between the upstream inlet section and the downstream inlet section of the air conditioning water heat exchange tube.

[0016] And / or when the heat pump unit is in the spray water replenishment stage, the solar heating tube is connected in series between the upstream water inlet section of the air conditioning water heat exchange tube and the spray device.

[0017] And / or when the heat pump unit is in condensate recovery mode, the drip tray is connected to the downstream inlet section of the air conditioning water heat exchanger pipe.

[0018] In some embodiments of this utility model, a third valve is provided on the water inlet side of the spray device, and a tenth valve is provided on the intermediate connecting section;

[0019] The inlet of the solar heating tube is connected to the outlet of the hot water heat exchange tube through the eleventh valve and to the upstream inlet section through the ninth valve. The outlet of the solar heating tube is connected to the downstream inlet section through the eighth valve, to the inlet of the hot water heat exchange tube through the fifth valve and the first valve, and to the third valve through the fifth valve and the fourth valve.

[0020] The outlet side of the water receiving tray is connected to the inlet end of the hot water heat exchange pipe through the seventh valve and the sixth valve, and is connected to the third valve through the seventh valve and the second valve.

[0021] In some embodiments of this utility model, a spray water pump is installed on the outlet side of the water receiving tray, a hot water pump is installed on the outlet side of the hot water heat exchange pipe, and an air conditioning water pump is installed on the upstream inlet section of the air conditioning water heat exchange pipe.

[0022] In some embodiments of this invention, the hot water heat exchange tube is submerged in the water of the hot water tank.

[0023] In some embodiments of this utility model, the outdoor heat exchanger is a finned heat exchanger, and the air conditioning heat exchanger is a plate heat exchanger.

[0024] Furthermore, solar heating tubes are installed on the top and all four sides of the outdoor unit.

[0025] Furthermore, the solar heating tubes are bent and arranged on the outdoor unit's panel.

[0026] Compared with existing technologies, this utility model utilizes the panel of the outdoor unit to install solar heating tubes, saving installation space for users; it produces domestic hot water by absorbing heat through the solar heating tubes; or it preheats the hot water to achieve heat recovery; or it sprays the frost on the outdoor heat exchanger during heating to defrost, thereby achieving defrosting without stopping the machine, improving the stability of hot water temperature during defrosting, and ensuring user comfort.

[0027] Based on this, the water collection tray below the outdoor heat exchanger can be switched to connect to a spray device or a hot water heat exchange pipe; during cooling, the outdoor heat exchanger can be sprayed to cool it down, thereby reducing the condensing temperature in the cooling state and improving the unit's energy efficiency ratio; or the heat carried away by the spray water can be used to heat the water tank to achieve heat recovery.

[0028] As a further optimization, the water tray can also be connected to the inlet side of the air conditioning water heat exchange pipe, which can realize the replenishment of spray water and the recovery of condensate. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0030] Figure 1 This is a schematic diagram of the layout of the solar heating tube of this utility model;

[0031] Figure 2 This is a connection diagram of the heat pump unit of this utility model;

[0032] Figure 3 This is a schematic diagram of the flow path for solar-powered hot water production according to this utility model;

[0033] Figure 4 This is a schematic diagram of the flow path of the solar water heating and defrosting system of this utility model;

[0034] Figure 5 This is a schematic diagram of the flow path for the heating without stopping and the defrosting with spray in this utility model;

[0035] Figure 6 This is a schematic diagram of the flow path for the cooling spray cooling and hot water production of this utility model;

[0036] Figure 7 This is a schematic diagram of the flow path for the refrigeration and spray cooling of this utility model;

[0037] Figure 8 This is a schematic diagram of the flow path for solar preheating and heating in this utility model;

[0038] Figure 9 This is a schematic diagram of the flow path for water replenishment in the spray system of this utility model;

[0039] Figure 10 This is a schematic diagram of the flow path for condensate recovery in this utility model; Attached image description:

[0041] 1. Heat pump unit;

[0042] 10. Outdoor unit; 11. Air outlet; 20. Outdoor heat exchanger; 30. Outdoor fan; 40. Air conditioning heat exchanger; 41. Air conditioning water heat exchange pipe; 411. Upstream water inlet section; 412. Downstream water inlet section; 50. Hot water heat exchange pipe; 60. Hot water tank; 70. Spray device; 80. Solar heating pipe; 90. Water tray; 100. Air conditioning water pump; 110. Hot water pump; 120. Spray pump;

[0043] 1f, first valve; 2f, second valve; 3f, third valve; 4f, fourth valve; 5f, fifth valve; 6f, sixth valve; 7f, seventh valve; 8f, eighth valve; 9f, ninth valve; 10f, tenth valve; 11f, eleventh valve. Detailed Implementation

[0044] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0045] like Figure 1 , 2 As shown, the heat pump unit 1 proposed in this utility model includes, but is not limited to, an air source heat pump unit. Specifically, the heat pump unit 1 includes: an outdoor heat exchanger 20, an air conditioning heat exchanger 40, and a hot water heat exchange pipe 50. The outdoor heat exchanger 20 is located inside the outdoor unit 10. A spray device 70 is provided above the outdoor heat exchanger 20. The spray device 70 can be a spray head or the like. The air conditioning heat exchanger 40 has a refrigerant heat exchange pipe and an air conditioning water heat exchange pipe 41 for mutual heat exchange. The refrigerant heat exchange pipe is connected to the outdoor heat exchanger 20, and the air conditioning water heat exchange pipe 41 is connected to the air conditioning terminal. The hot water heat exchange pipe 50 is used to supply heat to the hot water tank 60.

[0046] A solar heating element 80 is installed on the panel of the outdoor unit 10, making full use of the surface area of ​​the outdoor unit 10 without occupying additional installation space. The solar heating element 80 can be switched to connect to at least one of the hot water heat exchange pipe 50, the air conditioning water heat exchange pipe 41, and the spray device 70. This design can connect the solar heating element 80 to the hot water heat exchange pipe 50 to produce domestic hot water using the heat absorbed by the solar heating element 80; or connect the solar heating element 80 to the air conditioning water heat exchange pipe 41 to preheat the hot water using the heat absorbed by the solar heating element 80, achieving heat recovery; or connect the solar heating element 80 to the spray device 70 to spray the frost on the outdoor heat exchanger 20 during heating, thereby achieving defrosting without stopping the machine, improving the stability of the hot water temperature during defrosting, and ensuring user comfort.

[0047] Based on this, in order to make full use of the surface space of the outdoor unit 10, in addition to the air inlet and air outlet 11 of the outdoor unit 10, solar heating tubes 80 are provided on the top surface and all four sides of the outdoor unit 10 to increase the heat collection area of ​​the solar heating tubes 80. Moreover, the top surface of the outdoor unit 10 receives direct sunlight, and the sides receive direct or diffused sunlight, which effectively extends the heat collection time of the solar heating tubes 80 and increases the heat absorption of the solar heating tubes 80.

[0048] Furthermore, the preferred solution is to arrange the solar heating tubes at 80-degree bends on the panel of the outdoor unit 10, maximizing the use of the surface space of the outdoor unit 10. The heat collection area is far greater than that of the traditional flat plate design, achieving three-dimensional solar energy capture. The turbulent channels formed by the multiple bends extend the residence time of the liquid, increase the heat exchange intensity per unit area, and the heating speed is far greater than that of the straight tube design, achieving a rapid rise in water temperature.

[0049] like Figure 2 As shown, in some embodiments of this utility model, the heat pump unit 1 further includes a water receiving tray 90, which is located below the outdoor heat exchanger 20. The water receiving tray 90 can be switched to be connected to the spray device 70 or the hot water heat exchange pipe 50. This design allows the water receiving tray 90 to be connected to the spray device 70, and the water accumulated in the water receiving tray 90 to be directly supplied to the spray device 70. During cooling, the outdoor heat exchanger 20 is sprayed to cool it down, thereby reducing the condensing temperature in the cooling state and improving the unit's energy efficiency ratio. Alternatively, the water receiving tray 90 can be connected to the hot water heat exchange pipe 50, and the heat carried away by the sprayed water can be used to heat the water tank to achieve heat recovery.

[0050] like Figure 2 As shown, in some embodiments of this utility model, the inlet section of the air conditioning water heat exchange pipe 41 is divided into an upstream inlet section 411 and a downstream inlet section 412, which can be connected by an intermediate connecting section; the solar heating pipe 80 can be switched to connect at least one of the hot water heat exchange pipe 50, the upstream inlet section 411, the downstream inlet section 412, and the spray device 70; the water receiving tray 90 can be switched to connect at least one of the hot water heat exchange pipe 50, the spray device 70, and the downstream inlet section 412. This design can connect the solar heating pipe 80 between the upstream inlet section 411 and the spray device 70, using water from the air conditioning system to supplement the spray water; or connect the water receiving tray 90 to the downstream inlet section 412, extract water from the water receiving tray 90 and transport it to the air conditioning system to achieve condensate recovery.

[0051] The operating states of heat pump unit 1 include at least one of the following: solar water heating, solar water heating plus spray defrosting, heating without stopping plus spray defrosting, cooling spray cooling plus water heating, cooling plus spray cooling, solar preheating plus heating, spray water replenishment, and condensate recovery. In practical applications, the operating state of the heat pump unit can be selected according to the usage requirements and operating conditions, covering multiple energy couplings such as solar energy, waste heat, and condensate, with high comprehensive energy utilization efficiency, significantly reducing unit energy consumption, and providing a good user experience.

[0052] The following section provides a detailed explanation of the connection methods for each operating state and the heat absorption and release of the heat source.

[0053]

[0054]

[0055] like Figure 3 As shown, the heat pump unit 1 is in the solar water heating system. The solar heating tube 80 is connected in series between the outlet and inlet of the hot water heat exchange tube 50. After the water is heated in the solar heating tube 80, it is transported to the hot water heat exchange tube 50 to provide heat to the hot water tank 60, thereby realizing the production of hot water.

[0056] like Figure 4 As shown, the heat pump unit 1 is in a solar-powered hot water production and spray defrosting mode. This mode is suitable for scenarios where the outdoor ambient temperature is low and frost forms on the outdoor heat exchanger 20, affecting heat exchange. The solar heating tube 80 is connected in series between the inlet end of the spray device 70 and the outlet end of the hot water heat exchange tube 50. The water receiving tray 90 is connected to the inlet end of the hot water heat exchange tube 50. The hot water flowing out of the hot water heat exchange tube 50 passes through the solar heating tube 80 and is supplied to the spray device 70. The spray device 70 sprays the hot water onto the outdoor heat exchanger 20 to melt the frost layer on its surface.

[0057] like Figure 5 As shown, the heat pump unit 1 is in a state of uninterrupted heating with spray defrosting. In this state, the heat pump unit 1 is turned on for heating operation based on solar water heating and spray defrosting. The upstream inlet section 411 and the downstream inlet section 412 of the air conditioning water heat exchange pipe 41 are connected through an intermediate connecting section. The air conditioning heat exchanger 40 acts as a condenser. The high-temperature refrigerant in the refrigerant heat exchange pipe supplies heat to the air conditioning water heat exchange pipe 41 to heat the water in the air conditioning system and realize air conditioning heating. When the outdoor heat exchanger 20 is frosted and affects heat exchange, and defrosting is required, the solar heating pipe 80 is connected in series between the outlet end of the hot water heat exchange pipe 50 and the spray device 70. The water receiving pan 90 is connected to the inlet end of the hot water heat exchange pipe 50. The hot water flowing out of the hot water heat exchange pipe 50 passes through the solar heating pipe 80 and is provided to the spray device 70. The spray device 70 sprays the hot water onto the outdoor heat exchanger 20 to melt the frost layer on its surface. In this state, uninterrupted heating can be achieved, improving user comfort. In this state, heating and defrosting spray can be performed simultaneously.

[0058] like Figure 6As shown, heat pump unit 1 is in cooling spray cooling and hot water production mode. Heat pump unit 1 operates in cooling mode. The upstream inlet section 411 and downstream inlet section 412 of the air conditioning water heat exchanger 41 are connected by an intermediate connecting section. The air conditioning heat exchanger 40 acts as an evaporator. The low-temperature refrigerant in the refrigerant heat exchanger tube supplies cooling to the air conditioning water heat exchanger 41 to cool the water in the air conditioning system, thus achieving air conditioning cooling. The outdoor heat exchanger 20 acts as a condenser, releasing heat to the outdoor air. The solar heating tube 80 is connected in series with the hot water heat exchanger. Between the outlet and inlet of pipe 50, water is heated in the solar heating pipe 80 and then transported to the hot water heat exchange pipe 50 to provide heat to the hot water tank 60, thus producing hot water. The water receiving tray 90 is connected to the spray device 70. Water is drawn from the water receiving tray 90 and enters the spray device 70, where it is sprayed onto the outdoor heat exchanger 20 to cool it down, thereby reducing the condensing temperature of the unit and improving the energy efficiency of the heat pump unit 1. In this state, cooling, spray cooling, and hot water production can be carried out simultaneously.

[0059] like Figure 7 As shown, heat pump unit 1 is in cooling plus spray cooling mode. This mode is based on cooling, spray cooling and hot water production. After the actual water temperature of the hot water tank 60 reaches the set target temperature, when hot water production is not needed, the hot water production flow path is closed, and only cooling and spray cooling are operated. When heat pump unit 1 is in cooling mode, the upstream inlet section 411 and the downstream inlet section 412 of the air conditioning water heat exchange pipe 41 are connected through an intermediate connecting section. The air conditioning heat exchanger 40 acts as an evaporator. The low-temperature refrigerant in the refrigerant heat exchange pipe supplies cooling to the air conditioning water heat exchange pipe 41 to cool the water in the air conditioning system and achieve air conditioning cooling. The outdoor heat exchanger 20 acts as a condenser and releases heat to the outdoor air. The water receiving pan 90 is connected to the spray device 70. Water is drawn from the water receiving pan 90 and enters the spray device 70, spraying onto the outdoor heat exchanger 20 to cool it down, thereby reducing the condensing temperature of the unit and improving the energy efficiency of heat pump unit 1.

[0060] like Figure 8 As shown, the heat pump unit 1 is in the solar preheating and heating mode. The heat pump unit 1 is in heating mode. The air conditioning heat exchanger 40 acts as a condenser. The high-temperature refrigerant in the refrigerant heat exchange tube supplies heat to the air conditioning water heat exchange tube 41. The solar heating tube 80 is connected in series between the upstream inlet section 411 and the downstream inlet section 412 of the air conditioning water heat exchange tube 41. The water flowing out of the upstream inlet section 411 first passes through the solar heating tube 80. After being preheated, the water enters the air conditioning heat exchanger 40 and is then heated by the heat provided by the refrigerant heat exchange tube. Subsequently, it is supplied to the air conditioning terminal to realize solar preheating and heating.

[0061] like Figure 9As shown, the heat pump unit 1 is in the spray water replenishment state. This state is suitable for scenarios where the water loss due to the evaporation of the outdoor heat exchanger 20 is large and the water in the water collection pan 90 is insufficient. The solar heating tube 80 is connected in series between the upstream water inlet section 411 of the air conditioning water heat exchange tube 41 and the spray device 70 to transport the water in the air conditioning system to the spray device 70, and then drip into the water collection pan 90 to replenish the water volume.

[0062] like Figure 10 As shown, the heat pump unit 1 is in condensate recovery mode. This mode is suitable for scenarios where the outdoor heat exchanger 20 acts as an evaporator, absorbing heat from the air to generate condensate, causing the water level in the water collection pan 90 to rise continuously. The water collection pan 90 is connected to the downstream inlet section 412 of the air conditioning water heat exchange pipe 41, and the water in the water collection pan 90 is transported to the air conditioning system to achieve condensate recovery.

[0063] like Figure 2 As shown, in some embodiments of this utility model, the spray device 70 has a third valve 3f on the water inlet side and a tenth valve 10f in the intermediate connecting section. The water inlet of the solar heating tube 80 has two branches. The first branch is connected to the water outlet of the hot water heat exchange tube 50 through the eleventh valve 11f. Since the water outlet of the hot water heat exchange tube 50 only needs to discharge water, the eleventh valve 11f is preferably a one-way valve. The second branch is connected to the upstream water inlet section 411 through the ninth valve 9f. The water outlet of the solar heating tube 80 has three branches. The first branch is connected to the downstream water inlet section 412 of the air conditioning water heat exchange tube 41 through the eighth valve 8f. The second branch is connected to the water inlet of the hot water heat exchange tube 50 through the fifth valve 5f and the first valve 1f. The third branch is connected to the third valve 3f through the fifth valve 5f and the fourth valve 4f. The water outlet side of the water receiving tray 90 has two branches. The first branch is connected to the inlet end of the hot water heat exchange tube 50 through the seventh valve 7f and the sixth valve 6f. The second branch is connected to the third valve 3f through the seventh valve 7f and the second valve 2f.

[0064] Based on the piping connection method of heat pump unit 1, heat pump unit 1 can operate in any of the following working states: solar water heating, solar water heating plus spray defrosting, heating without stopping plus spray defrosting, cooling spray cooling plus water heating, cooling plus spray cooling, solar preheating plus heating, spray water replenishment, and condensate recovery. This enables flexible switching of the heat pump unit's flow path to match different operating conditions and usage requirements. It covers the coupling of multiple energy sources such as solar energy, waste heat, and condensate, resulting in high comprehensive energy utilization efficiency, significantly reducing unit energy consumption, and providing a good user experience.

[0065] Based on this, in some preferred embodiments of this utility model, a spray pump 120 is installed on the outlet side of the water receiving tray 90, a hot water pump 110 is installed on the outlet side of the hot water heat exchange pipe 50, and an air conditioning pump 100 is installed on the upstream inlet section 411 of the air conditioning water heat exchange pipe 41. By setting the pumps in stages, the water circuits for spraying, hot water, and air conditioning can operate independently, which can not only avoid the excessively long delivery route of a single pump and optimize the energy efficiency of the unit, but also improve the reliability of the heat pump unit.

[0066] The following details the switching status of valves and water pumps in different operating states of the heat pump unit.

[0067]

[0068]

[0069] like Figure 3 As shown, when the heat pump unit 1 is in solar-powered hot water production mode, the first valve 1f and the fifth valve 5f are opened. After the water is heated in the solar heating tube 80, it is transported to the hot water tank 60 by the hot water pump 110 to heat the hot water tank 60 and achieve hot water production.

[0070] like Figure 4 As shown, the heat pump unit 1 is in the solar hot water production plus spray defrosting mode. This mode is suitable for scenarios where the outdoor ambient temperature is low and frost on the outdoor heat exchanger 20 affects heat exchange. The third valve 3f, the fourth valve 4f, the fifth valve 5f, the sixth valve 6f, and the seventh valve 7f are opened so that the hot water in the hot water tank 60 passes through the solar heating tube 80 and is sprayed onto the outdoor heat exchanger 20 through the spray device 70, so that the frost on the outdoor heat exchanger 20 melts.

[0071] like Figure 5 As shown, the heat pump unit 1 is in a state of continuous heating with spray defrosting. This state is based on solar water heating with spray defrosting. The heat pump unit 1 is turned on for heating, and the tenth valve 10f and the air conditioning water pump 100 are opened. When the outdoor heat exchanger 20 is frosted and affects heat exchange, and defrosting is required, the third valve 3f, the fourth valve 4f, the fifth valve 5f, the sixth valve 6f, and the seventh valve 7f are opened. This allows the hot water in the hot water tank 60 to pass through the solar heating tube 80 and then be sprayed onto the outdoor heat exchanger 20 through the spray device 70, so that the frost on the outdoor heat exchanger 20 melts.

[0072] like Figure 6As shown, heat pump unit 1 is in cooling spray cooling and hot water production mode. During cooling operation, the tenth valve 10f and air conditioning water pump 100 are opened. The air conditioning heat exchanger 40 acts as an evaporator, and the low-temperature refrigerant in the refrigerant heat exchange tube supplies cooling to the air conditioning water heat exchange tube 41 to cool the water in the air conditioning system, thus achieving air conditioning cooling. The outdoor heat exchanger 20 acts as a condenser, releasing heat to the outdoor air. The first valve 1f and the fifth valve 5f are opened, and the hot water pump 110 delivers water into the solar heating tube 80. After being heated, the water enters the hot water heat exchange tube 50, providing heat to the hot water tank 60 to produce hot water. The seventh valve 7f, the second valve 2f, and the third valve 3f are opened, connecting the water receiving pan 90 to the spray device 70. The spray water pump 120 draws water from the water receiving pan 90 and enters the spray device 70, spraying it onto the outdoor heat exchanger 20 to cool it down, thereby reducing the unit's condensing temperature and improving the energy efficiency of the heat pump unit.

[0073] like Figure 7 As shown, heat pump unit 1 is in the cooling plus spray cooling mode. This state is based on cooling, spray cooling and hot water production. After the actual water temperature of the hot water tank 60 reaches the set target temperature, when hot water production is no longer needed, the hot water pump 110, the first valve 1f and the fifth valve 5f are closed. At this time, the hot water production flow path no longer runs, and only cooling and spray cooling are performed. Heat pump unit 1 can continue to cool. The tenth valve 10f and the air conditioning water pump 100 are opened. The air conditioning heat exchanger 40 acts as an evaporator. The low-temperature refrigerant in the refrigerant heat exchange tube supplies cold to the air conditioning water heat exchange tube 41 to cool the water in the air conditioning system and achieve air conditioning cooling.

[0074] like Figure 8 As shown, heat pump unit 1 is in solar preheating and heating mode. Heat pump unit 1 is in heating mode, opening the eighth valve 8f, the ninth valve 9f and the air conditioning water pump 100. The high-temperature refrigerant in the refrigerant heat exchange tube supplies heat to the air conditioning water heat exchange tube 41. The solar heating tube 80 is connected in series between the upstream inlet section 411 and the downstream inlet section 412 of the air conditioning water heat exchange tube 41. The water flowing out of the upstream inlet section 411 first passes through the solar heating tube 80. After being preheated, the water enters the air conditioning heat exchanger 40 and is then heated by the heat provided by the refrigerant heat exchange tube. Subsequently, it is supplied to the air conditioning terminal to realize solar preheating and heating.

[0075] like Figure 9 As shown, the heat pump unit 1 is in the spray water replenishment state. This state is suitable for scenarios where there is a lot of water loss due to evaporation from the outdoor heat exchanger 20 and the water in the drip tray 90 is insufficient. The air conditioning water pump 100 is turned on, and the third valve 3f, the fourth valve 4f, the fifth valve 5f and the ninth valve 9f are opened. The air conditioning water pump 100 delivers water from the air conditioning system to the spray device 70, which then drips into the drip tray 90 to replenish the water volume.

[0076] like Figure 10As shown, the heat pump unit 1 is in condensate recovery mode. This mode is suitable for scenarios where the outdoor heat exchanger 20 acts as an evaporator, absorbing heat from the air to generate condensate, causing the water level in the drip tray 90 to rise continuously. The spray water pump 120 is turned on, and the second valve 2f, the fourth valve 4f, the fifth valve 5f, the seventh valve 7f, and the eighth valve 8f are opened. The spray water pump 120 draws water from the drip tray 90 and delivers it to the air conditioning system, thereby realizing condensate recovery.

[0077] like Figure 2 As shown, in some embodiments of this utility model, the hot water heat exchange tube 50 is immersed in the water in the hot water tank 60. The hot water heat exchange tube 50 is preferably a spiral coil to increase the contact area between the tube wall and the water. The water in the hot water heat exchange tube 50 flows from bottom to top, which improves the heat exchange efficiency and makes the water temperature in the hot water tank 60 uniform.

[0078] In some embodiments of this utility model, the outdoor heat exchanger 20 is a finned heat exchanger, and the outdoor fan 30 drives the airflow to exchange heat with the finned heat exchanger, enhancing the air-side heat exchange efficiency. The compact structure of the finned heat exchanger optimizes airflow turbulence and heat exchange density. The air conditioning heat exchanger 40 is a plate heat exchanger, which enhances the heat exchange efficiency between the refrigerant and the air conditioning water, reducing the unit's energy efficiency. The unit optimizes overall energy efficiency through the combination of the two types of heat exchangers. During cooling, the plate heat exchanger directly lowers the condensing temperature, reducing the compressor load; during heating, the finned heat exchanger extends the defrosting interval, and combined with spraying, achieves zero-interruption heating. Under extreme operating conditions, the two systems complement each other, with the finned heat exchanger ensuring low-temperature start-up reliability and the plate heat exchanger maintaining high-temperature stability.

[0079] It should be noted that the terminology used above is for describing specific embodiments only and is not intended to limit the exemplary embodiments according to this utility model. When the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. The execution order of actions, steps, etc., in the apparatus and methods shown in the specification and drawings can be implemented in any order unless a specific order is explicitly specified, and as long as the output of the preceding process is not used in the subsequent process. Similar sequential terms used for ease of description, such as "first," "second," etc., are used to distinguish different objects and are not used to describe a specific order.

[0080] Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0081] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Heat pump units, including: An outdoor heat exchanger, an air conditioning heat exchanger, and a hot water heat exchange pipe are provided. The outdoor heat exchanger is located inside an outdoor unit, and a spray device is provided above the outdoor heat exchanger. The air conditioning heat exchanger has a refrigerant heat exchange pipe and an air conditioning water heat exchange pipe that exchange heat with each other. The refrigerant heat exchange pipe is connected to the outdoor heat exchanger, and the air conditioning water heat exchange pipe is connected to an air conditioning terminal. The hot water heat exchange pipe is used to supply heat to a hot water tank. The outdoor unit's panel is equipped with a solar heating pipe, which can switch between connecting to at least one of the hot water heat exchange pipe, the air conditioning water heat exchange pipe, and the spray device.

2. The heat pump unit according to claim 1, characterized in that, The heat pump unit also includes a water receiving tray located below the outdoor heat exchanger, which can be switched to connect to the hot water heat exchange pipe or the spray device.

3. The heat pump unit according to claim 2, characterized in that, The inlet section of the air conditioning water heat exchanger is divided into an upstream inlet section and a downstream inlet section, and the upstream inlet section and the downstream inlet section can be connected by an intermediate connecting section. The solar heating tube can be switched to connect to at least one of the hot water heat exchange tube, the upstream water inlet section, the downstream water inlet section, and the spray device; The water receiving tray can switch between at least one of the hot water heat exchange pipe, the spray device, and the downstream water inlet section.

4. The heat pump unit according to claim 3, characterized in that, The operating states of the heat pump unit include at least one of the following: solar water heating, solar water heating with spray defrosting, heating without stopping with spray defrosting, cooling with spray cooling and water heating, cooling with spray cooling, solar preheating and heating, spray water replenishment, and condensate recovery. When the heat pump unit is in solar-powered hot water production mode, the solar heating tube is connected in series between the outlet and inlet ends of the hot water heat exchange tube. And / or when the heat pump unit is in the solar hot water production plus spray defrosting mode, the solar heating tube is connected in series between the water inlet end of the spray device and the water outlet end of the hot water heat exchange tube, and the water receiving tray is connected to the water inlet end of the hot water heat exchange tube. And / or when the heat pump unit is in heating mode without stopping and defrosting with spray, the heat pump unit is in heating mode, the upstream inlet section and the downstream inlet section of the air conditioning water heat exchange pipe are connected through an intermediate connecting section, the solar heating pipe is connected in series between the outlet end of the hot water heat exchange pipe and the spray device, and the water receiving tray is connected to the inlet end of the hot water heat exchange pipe. And / or when the heat pump unit is in cooling spray cooling and hot water production, the heat pump unit is in cooling operation, the upstream inlet section and the downstream inlet section of the air conditioning water heat exchange pipe are connected through an intermediate connecting section, the solar heating pipe is connected in series between the outlet end and the inlet end of the hot water heat exchange pipe, and the water receiving tray is connected to the spray device. And / or when the heat pump unit is in cooling plus spray cooling mode, the heat pump unit is in cooling operation, the upstream water inlet section and the downstream water inlet section of the air conditioning water heat exchange pipe are connected through an intermediate connecting section, and the water receiving tray is connected to the spray device; And / or when the heat pump unit is in solar preheating and heating mode, the heat pump unit operates in heating mode, and the solar heating tube is connected in series between the upstream inlet section and the downstream inlet section of the air conditioning water heat exchange tube; And / or when the heat pump unit is in the spray water replenishment stage, the solar heating tube is connected in series between the upstream water inlet section of the air conditioning water heat exchange tube and the spray device; And / or when the heat pump unit is in condensate recovery mode, the water receiving tray is connected to the downstream inlet section of the air conditioning water heat exchanger pipe.

5. The heat pump unit according to claim 3, characterized in that, The spray device is equipped with a third valve on the water inlet side and a tenth valve on the intermediate connecting section. The inlet of the solar heating tube is connected to the outlet of the hot water heat exchange tube through the eleventh valve and to the upstream inlet section through the ninth valve. The outlet of the solar heating tube is connected to the downstream inlet section through the eighth valve, to the inlet of the hot water heat exchange tube through the fifth valve and the first valve, and to the third valve through the fifth valve and the fourth valve. The outlet side of the water receiving tray is connected to the inlet end of the hot water heat exchange pipe through the seventh valve and the sixth valve, and is connected to the third valve through the seventh valve and the second valve.

6. The heat pump unit according to claim 5, characterized in that, A spray water pump is installed on the outlet side of the water receiving tray, a hot water pump is installed on the outlet side of the hot water heat exchange pipe, and an air conditioning water pump is installed on the upstream inlet section of the air conditioning water heat exchange pipe.

7. The heat pump unit according to claim 1, characterized in that, The hot water heat exchange tube is submerged in the water in the hot water tank.

8. The heat pump unit according to claim 1, characterized in that, The outdoor heat exchanger is a finned heat exchanger, and the air conditioning heat exchanger is a plate heat exchanger.

9. The heat pump unit according to claim 1, characterized in that, The outdoor unit is equipped with solar heating tubes on its top surface and all four sides.

10. The heat pump unit according to any one of claims 1 to 9, characterized in that, The solar heating tubes are bent and arranged on the panel of the outdoor unit.

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