Heat pump system, temperature adjusting equipment and control method of temperature adjusting equipment

Abstract

The invention relates to the field of temperature regulation, particularly provides a heat pump system, temperature regulation equipment and a control method of the temperature regulation equipment, and aims to solve the problem of how to improve the heating performance of the heat pump system under an ultralow temperature working condition. In order to achieve the purpose, the heat pump system comprises a refrigerant loop and a refrigerant flow path, a compressor, a condenser, a throttling device and an evaporator are sequentially arranged on the refrigerant loop, the condenser comprises a first heat exchange pipeline and a second heat exchange pipeline, the two ends of the first heat exchange pipeline are connected to the refrigerant loop, the compressor is further arranged on the refrigerant flow path, and the throttling device is arranged on the second heat exchange pipeline. The refrigerant flow path is communicated with outside air and the second heat exchange pipeline, and on-off of the refrigerant loop and the refrigerant flow path can be controlled respectively. By means of the arrangement mode, the heating effect of the heat pump system in the normal heating mode and the ultralow-temperature heating mode is guaranteed, and meanwhile compared with a cascade type heat pump system, the structure can be simplified, and the production and use cost can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of temperature regulation, and specifically provides a heat pump system, a temperature regulation device and a control method for the temperature regulation device. Background Art

[0002] At present, heat pump temperature control equipment (air conditioners, heaters) can maintain good heating performance when the outer ring temperature is above -20℃, with a COP of about 2-5. When the outer ring temperature is below -20℃, the heating capacity and COP will be greatly reduced. The current solution is generally to increase enthalpy by adding air, but its heating COP is still less than 2. For users, the lower the temperature, the greater the heating demand. Therefore, how to improve the performance of heat pump systems under ultra-low temperature conditions is a major problem in the industry.

[0003] Accordingly, the art needs a new heat pump system, a temperature regulating device, and a control method for the temperature regulating device to solve the problem of how to improve the heating performance of the heat pump system under ultra-low temperature conditions. Summary of the invention

[0004] The present invention aims to solve the above technical problem, that is, to solve the problem of how to improve the heating performance of a heat pump system under ultra-low temperature conditions.

[0005] In a first aspect, the present invention provides a heat pump system, characterized in that the heat pump system comprises: a refrigerant circuit, on which a compressor, a condenser, a throttling device and an evaporator are sequentially arranged; the condenser comprises a first heat exchange pipeline and a second heat exchange pipeline, and both ends of the first heat exchange pipeline are connected to the refrigerant circuit; a refrigerant flow path, on which the compressor is also arranged, and the refrigerant flow path is connected to the outside air and the second heat exchange pipeline; wherein the on-off of the refrigerant circuit and the refrigerant flow path can be controlled separately.

[0006] In the preferred technical solution of the above-mentioned heat pump system, the refrigerant flow path includes a first refrigerant pipeline and a second refrigerant pipeline, one end of the first refrigerant pipeline is connected to the outside air, the other end of the first refrigerant pipeline is connected to the input end of the compressor, one end of the second refrigerant pipeline is connected to the output end of the compressor, and the other end of the second refrigerant pipeline is connected to the inlet of the second heat exchange pipeline; a first valve body is provided on the first refrigerant pipeline, and a second valve body is provided on the second refrigerant pipeline.

[0007] In a preferred technical solution of the above heat pump system, the refrigerant flow path further includes a third refrigerant pipeline, the third refrigerant pipeline is connected to the outlet of the second heat exchange pipeline, and a third valve body is provided on the third refrigerant pipeline.

[0008] In a preferred technical solution of the above heat pump system, a fourth valve body is provided on the refrigerant circuit between the first refrigerant pipeline and the evaporator, and a fifth valve body is provided on the refrigerant circuit between the second refrigerant pipeline and the condenser.

[0009] In the preferred technical solution of the above-mentioned heat pump system, the second valve body and the fifth valve body together constitute a first three-way valve, one valve port of the first three-way valve is connected to the second refrigerant pipeline, and the other two valve ports of the first three-way valve are connected to the refrigerant circuit; or the second valve body and the fifth valve body are both solenoid valves.

[0010] In the preferred technical solution of the above-mentioned heat pump system, the first valve body and the fourth valve body together constitute a second three-way valve, one valve port of the second three-way valve is connected to the first refrigerant pipeline, and the other two valve ports of the second three-way valve are connected to the refrigerant circuit; or the first valve body and the fourth valve body are both solenoid valves.

[0011] In another aspect, the present invention further provides a temperature regulating device, which comprises the heat pump system described in any one of the above embodiments.

[0012] On the other hand, the present invention also provides a control method for a temperature regulating device, the temperature regulating device includes a heat pump system, the heat pump system includes: a refrigerant circuit, a compressor, a condenser, a throttling device and an evaporator are arranged on the refrigerant circuit in sequence; the condenser includes a first heat exchange pipeline and a second heat exchange pipeline, and both ends of the first heat exchange pipeline are connected to the refrigerant circuit; a refrigerant flow path, the compressor is also arranged on the refrigerant flow path, and the refrigerant flow path is connected to the outside air and the second heat exchange pipeline; wherein the on-off of the refrigerant circuit and the refrigerant flow path can be controlled separately; the control method includes: in normal heating mode, controlling the refrigerant circuit to be connected, controlling the refrigerant flow path to be blocked, and controlling the compressor to start; in ultra-low temperature heating mode, controlling the refrigerant circuit to be blocked, controlling the refrigerant flow path to be connected, and controlling the compressor to start.

[0013] In the preferred technical solution of the control method of the above-mentioned temperature control equipment, the refrigerant flow circuit includes a first refrigerant pipeline and a second refrigerant pipeline, one end of the first refrigerant pipeline is connected to the outside air, the other end of the first refrigerant pipeline is connected to the input end of the compressor, one end of the second refrigerant pipeline is connected to the output end of the compressor, and the other end of the second refrigerant pipeline is connected to the inlet of the second heat exchange pipeline; a first valve body is provided on the first refrigerant pipeline, and a second valve body is provided on the second refrigerant pipeline; the refrigerant flow circuit also includes a third refrigerant pipeline, the third refrigerant pipeline is connected to the outlet of the second refrigerant pipeline, and the third refrigerant pipeline is provided with a third valve body; the first refrigerant pipeline and the A fourth valve body is provided on the refrigerant circuit between the evaporators, and a fifth valve body is provided on the refrigerant circuit between the second refrigerant pipeline and the condenser; the step of "under normal heating mode, controlling the refrigerant circuit to be connected and controlling the refrigerant flow path to be blocked" further includes: under normal heating mode, controlling the fourth valve body and the fifth valve body to be opened, and controlling the first valve body, the second valve body and the third valve body to be closed; the step of "under ultra-low temperature heating mode, controlling the refrigerant circuit to be blocked, and controlling the refrigerant flow path to be connected" further includes: under ultra-low temperature heating mode, controlling the fourth valve body and the fifth valve body to be closed, and controlling the first valve body, the second valve body and the third valve body to be opened.

[0014] In the preferred technical solution of the control method of the above-mentioned temperature regulating equipment, the step of "controlling the fourth valve body and the fifth valve body to close, and controlling the first valve body, the second valve body and the third valve body to open" further includes: controlling the fourth valve body to close; after a preset time, controlling the fifth valve body to close; after the fourth valve body and the fifth valve body are closed, controlling the first valve body, the second valve body and the third valve body to open.

[0015] It can be understood by those skilled in the art that the heat pump system of the present invention includes a refrigerant circuit and a refrigerant flow path, wherein a compressor, a condenser, a throttling device and an evaporator are sequentially arranged on the refrigerant circuit, the condenser includes a first heat exchange pipeline and a second heat exchange pipeline, both ends of the first heat exchange pipeline are connected to the refrigerant circuit, and the compressor is also arranged on the refrigerant flow path, and the refrigerant flow path is connected to the outside air and the second heat exchange pipeline, wherein the on-off of the refrigerant circuit and the refrigerant flow path can be controlled separately. The above-mentioned setting method enables the heat pump system to control the connection of the refrigerant circuit, control the blocking of the refrigerant flow path, and control the start-up of the compressor in the normal heating mode, so that the refrigerant compressed by the compressor flows through the first heat exchange pipeline, the throttling device and the evaporator of the condenser in sequence and then returns to the compressor, so that the condenser heats the indoor air to achieve the heating effect. In the ultra-low temperature heating mode, the refrigerant circuit can be blocked, the refrigerant flow path can be connected, and the compressor can be started. After the compressor is started, the parameters of the compressor can be adjusted to achieve different heating temperatures for the air, so that the high-temperature air heated by the compressor in the refrigerant flow path enters the second heat exchange pipeline and exchanges heat with the air around the condenser to achieve the purpose of heating the surrounding air. While ensuring the heating effect in the normal heating mode and the ultra-low temperature heating mode, compared with the cascade heat pump system, it can also simplify the structure and reduce the production and use costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0017] Figure 1 is a schematic structural diagram of a heat pump system of the present invention;

[0018] Figure 2 It is a main flow chart of the control method of the temperature adjustment device of the present invention.

[0019] Description of reference numerals:

[0020] 1- compressor; 2- condenser; 3- throttling device; 4- evaporator; 50- refrigerant circuit; 51- refrigerant flow path; 511- first refrigerant pipeline; 512- second refrigerant pipeline; 513- third refrigerant pipeline; 60- first valve body; 61- second valve body; 62- third valve body; 63- fourth valve body; 64- fifth valve body. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios, which do not deviate from the principles of the present invention and are within the scope of protection of the present invention.

[0022] It should be noted that, in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, in the description of the present invention, the terms "first", "second", "third", "fourth" and "fifth" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In order to solve the problem of how to improve the heating performance of the heat pump system under ultra-low temperature conditions. Figure 1 As shown, the present invention provides a heat pump system, which includes a refrigerant circuit 50 and a refrigerant flow path 51, wherein the refrigerant circuit 50 is provided with a compressor 1, a condenser 2, a throttling device 3 and an evaporator 4 in sequence, the condenser 2 includes a first heat exchange pipeline (not shown in the figure) and a second heat exchange pipeline (not shown in the figure), both ends of the first heat exchange pipeline are connected to the refrigerant circuit 50, the compressor 1 is also arranged on the refrigerant flow path 51, the refrigerant flow path 51 is connected to the outside air and the second heat exchange pipeline, wherein the on and off of the refrigerant circuit 50 and the refrigerant flow path 51 can be controlled separately.

[0024] Among them, the throttling device 3 is preferably an electronic expansion valve, and less preferably, it can also be a throttling element such as a capillary tube. As long as it can throttle, it does not deviate from the principle of the present invention and is within the protection scope of the present invention. In addition, in addition to the first heat exchange pipeline and the second heat exchange pipeline, the condenser 2 can also be provided with fins on the first heat exchange pipeline and / or the second heat exchange pipeline to increase the heat exchange area and improve the heat exchange effect. The first heat exchange pipeline and the second pipeline can both be in the shape of a coil. It can be understood that the cross-section of the first heat exchange pipeline and the second heat exchange pipeline of the present invention can be circular, elliptical, square, etc. As long as the first heat exchange pipeline and the second heat exchange pipeline can be used as a passage for the refrigerant, it does not deviate from the principle of the present invention and is within the protection scope of the present invention.

[0025] The above-mentioned setting makes it possible for the heat pump system to control the connection of the refrigerant circuit 50, control the blocking of the refrigerant flow path 51, and control the start of the compressor 1 in the normal heating mode, so that the refrigerant compressed by the compressor 1 flows through the first heat exchange pipeline of the condenser 2, the throttling device 3 and the evaporator 4 in sequence and then returns to the compressor 1, so that the condenser 2 heats the indoor air to achieve the heating effect. In the ultra-low temperature heating mode, the refrigerant circuit 50 can be blocked, the refrigerant flow path 51 can be controlled to be connected, and the compressor 1 can be controlled to start. After the compressor 1 is started, the parameters of the compressor 1 can be adjusted to achieve different heating temperatures for the air, so that the high-temperature air heated by the compressor 1 in the refrigerant flow path 51 enters the second heat exchange pipeline and exchanges heat with the air around the condenser 2 to achieve the purpose of heating the surrounding air. That is to say, the refrigerant in the refrigerant circuit 50 of the present invention is refrigerant, and the refrigerant in the refrigerant flow path 51 is air. The compressor 1 can compress the refrigerant and the air at the same time. While ensuring the heating effect in the normal heating mode and the ultra-low temperature heating mode, compared with the cascade heat pump system, it can also simplify the structure and reduce the production and use costs.

[0026] Furthermore, the heat pump system of the present invention further comprises a heat exchange fan, which is used to guide the airflow to blow to the condenser 2, so as to accelerate the heat exchange.

[0027] As a possible implementation, the refrigerant flow path 51 of the present invention includes a first refrigerant pipeline 511 and a second refrigerant pipeline 512, one end of the first refrigerant pipeline 511 is connected to the outside air, the other end of the first refrigerant pipeline 511 is connected to the input end of the compressor 1, one end of the second refrigerant pipeline 512 is connected to the output end of the compressor 1, and the other end of the second refrigerant pipeline 512 is connected to the inlet of the second heat exchange pipeline; the first refrigerant pipeline 511 is provided with a first valve body 60, and the second refrigerant pipeline 512 is provided with a second valve body 61. Further, the refrigerant flow path 51 also includes a third refrigerant pipeline 513, the third refrigerant pipeline 513 is connected to the outlet of the second heat exchange pipeline, and the third refrigerant pipeline 513 is provided with a third valve body 62.

[0028] For example, one end of the first refrigerant pipeline 511 is connected to the outside air, and the other end of the first refrigerant pipeline 511 is connected to the refrigerant circuit 50 between the compressor 1 and the evaporator 4, that is, in the refrigerant flow direction, the other end is connected to the downstream of the evaporator 4 and the upstream of the compressor 1. One end of the second refrigerant pipeline 512 is connected to the refrigerant circuit 50 between the compressor 1 and the condenser 2, that is, in the refrigerant flow direction, the one end is connected to the downstream of the compressor 1 and the upstream of the condenser 2. The other end of the second refrigerant pipeline 512 is connected to the inlet of the second heat exchange pipeline, and the third refrigerant pipeline 513 is connected to the outlet of the second heat exchange pipeline. In this case, the first refrigerant pipeline 511, the refrigerant circuit 50 between the first refrigerant pipeline 511 and the second refrigerant pipeline 512, the second refrigerant pipeline 512 and the third refrigerant pipeline 513 constitute the refrigerant flow path 51 introduced above. Of course, this is not restrictive, and the setting method can be adjusted, such as replacing "the other end of the first refrigerant pipeline 511 is connected to the refrigerant circuit 50 between the compressor 1 and the evaporator 4" with "the other end of the first refrigerant pipeline 511 is directly connected to the input end of the compressor 1", and replacing "one end of the second refrigerant pipeline 512 is connected to the refrigerant circuit 50 between the compressor 1 and the condenser 2" with "one end of the second refrigerant pipeline 512 is directly connected to the output end of the compressor 1". These simple replacements do not deviate from the principles of the present invention and are within the protection scope of the present invention.

[0029] The above arrangement enables the refrigerant flow path 51 to be connected and blocked. For example, when the first valve body 60, the second valve body 61 and the third valve body 62 are all opened, the refrigerant flow path 51 can be connected. When the first valve body 60, the second valve body 61 and the third valve body 62 are all closed, the refrigerant flow path 51 can be blocked.

[0030] As a possible implementation, a fourth valve body 63 is provided on the refrigerant circuit 50 between the first refrigerant pipeline 511 and the evaporator 4, that is, the fourth valve body 63 is arranged downstream of the evaporator 4 and upstream of the first refrigerant pipeline 511 in the refrigerant flow direction. A fifth valve body 64 is provided on the refrigerant circuit 50 between the second refrigerant pipeline 512 and the condenser 2, that is, the fifth valve body 64 is arranged upstream of the condenser 2 and downstream of the second refrigerant pipeline 512 in the refrigerant flow direction. This arrangement enables the refrigerant circuit 50 to be connected when the fourth valve body 63 and the fifth valve body 64 are opened, and when the fourth valve body 63 and the fifth valve body 64 are closed, the refrigerant in the refrigerant circuit 50 can be pressed into the first heat exchange pipeline of the condenser 2 and the evaporator 4, thereby ensuring the heat exchange efficiency of the heat pump system in the normal heating mode.

[0031] Possibly, the first valve body 60, the second valve body 61, the third valve body 62, the fourth valve body 63 and the fifth valve body 64 may all be solenoid valves. As an alternative embodiment, the second valve body 61 and the fifth valve body 64 together constitute a first three-way valve, one valve port of the first three-way valve is connected to the second refrigerant pipeline 512, and the other two valve ports of the first three-way valve are connected to the refrigerant circuit 50. As an alternative embodiment, the first valve body 60 and the fourth valve body 63 together constitute a second three-way valve, one valve port of the second three-way valve is connected to the first refrigerant pipeline 511, and the other two valve ports of the second three-way valve are connected to the refrigerant circuit 50.

[0032] For example, when the first valve body 60 is a solenoid valve, the first valve body 60 can be set at one end of the first refrigerant pipeline 511 close to the refrigerant circuit 50. When the second valve body 61 is a solenoid valve, the second valve body 61 can be set at one end of the second refrigerant pipeline 512 close to the refrigerant circuit 50 to avoid the loss of refrigerant in the refrigerant circuit 50. When the second valve body 61 and the fifth valve body 64 together constitute a first three-way valve, one valve port of the first three-way valve is connected to the second refrigerant pipeline 512, and the other two valve ports of the first three-way valve are connected to the refrigerant circuit 50, if the first valve port is connected to the second refrigerant pipeline 512, the valve port close to the compressor 1 is called the second valve port, and the valve port close to the condenser 2 is called the third valve port, and when the refrigerant circuit 50 is controlled to be connected and the refrigerant flow path 51 is blocked, the first valve port is controlled to be closed, and the second valve port is controlled to be connected to the third valve port; when the refrigerant circuit 50 is blocked and the refrigerant flow path 51 is connected, the third valve port is controlled to be closed, and the first valve port is controlled to be connected to the second valve port. When the first valve body 60 and the fourth valve body 63 together form a second three-way valve, one valve port of the second three-way valve is connected to the first refrigerant pipeline 511, and the other two valve ports of the second three-way valve are connected to the refrigerant circuit 50, if the fourth valve port is connected to the first refrigerant pipeline 511, the fifth valve port is close to the compressor 1, and the sixth valve port is close to the evaporator 4, when the control refrigerant circuit 50 is connected and the control refrigerant flow path 51 is blocked, the fourth valve port is controlled to be closed, and the fifth valve port is controlled to be connected to the sixth valve port. When the control refrigerant circuit 50 is blocked and the control refrigerant flow path 51 is connected, the sixth valve port is controlled to be closed, and the fourth valve port is controlled to be connected to the fifth valve port. The above-mentioned setting method can avoid the loss of refrigerant and can ensure the heating effect in normal heating mode and ultra-low temperature heating mode.

[0033] On the other hand, the present invention further provides a temperature regulating device, which includes the heat pump system described in any of the above embodiments. The temperature regulating device can be an air conditioner or a heater, etc. After the temperature regulating device has the above heat pump system, it can meet the heating effect in the normal heating mode and the ultra-low temperature heating mode by opening and closing the valve body.

[0034] On the other hand, the present invention also provides a method for controlling a temperature regulating device, such as Figure 2 As shown, the control method includes the following steps.

[0035] Step S100: In normal heating mode, the refrigerant circuit is controlled to be connected, the refrigerant flow path is controlled to be blocked, and the compressor is controlled to start.

[0036] Step S200: In the ultra-low temperature heating mode, the refrigerant circuit is controlled to be blocked, the refrigerant flow path is controlled to be connected, and the compressor is controlled to start.

[0037] In normal heating mode, by controlling the connection of the refrigerant circuit, controlling the blocking of the refrigerant flow path, and controlling the start of the compressor, the refrigerant compressed by the compressor flows through the first heat exchange pipeline of the condenser, the throttling device and the evaporator in sequence and then returns to the compressor, so that the condenser heats the indoor air to achieve the heating effect. In ultra-low temperature heating mode, by controlling the blocking of the refrigerant circuit, controlling the connection of the refrigerant flow path, and controlling the start of the compressor, after the compressor is started, the parameters of the compressor can be adjusted to achieve different heating temperatures for the air, so that the high-temperature air heated by the compressor in the refrigerant flow path enters the second heat exchange pipeline and exchanges heat with the air around the condenser to achieve the purpose of heating the surrounding air. Thereby, the heating performance of the heat pump system under ultra-low temperature conditions can be improved.

[0038] Furthermore, step S100 further includes "in normal heating mode, controlling the fourth valve body and the fifth valve body to open, and controlling the first valve body, the second valve body and the third valve body to close". Step S200 further includes "in ultra-low temperature heating mode, controlling the fourth valve body and the fifth valve body to close, and controlling the first valve body, the second valve body and the third valve body to open".

[0039] Among them, when the first valve body, the second valve body, the third valve body, the fourth valve body and the fifth valve body are all solenoid valves, such as the first valve body is the first solenoid valve, the second valve body is the second solenoid valve, the third valve body is the third solenoid valve, the fourth valve body is the fourth solenoid valve, and the fifth valve body is the fifth solenoid valve, "control the fourth valve body and the fifth valve body to open, and control the first valve body, the second valve body and the third valve body to close" means controlling the fourth solenoid valve and the fifth solenoid valve to open, and controlling the first solenoid valve, the second solenoid valve and the third solenoid valve to close. "Control the fourth valve body and the fifth valve body to close, and control the first valve body, the second valve body and the third valve body to open" means controlling the fourth solenoid valve and the fifth solenoid valve to close, and controlling the first solenoid valve, the second solenoid valve and the third solenoid valve to open. In the case where the second valve body and the fifth valve body together constitute the first three-way valve, and the first valve body and the fourth valve body together constitute the second three-way valve, "control the fourth valve body and the fifth valve body to open, and control the first valve body and the second valve body to close" means controlling the first valve port to close, controlling the second valve port to communicate with the third valve port, controlling the fourth valve port to close, and controlling the fifth valve port to communicate with the sixth valve port. "Control the fourth valve body and the fifth valve body to close, and control the first valve body and the second valve body to open" means controlling the third valve port to close, controlling the first valve port to communicate with the second valve port, controlling the sixth valve port to close, and controlling the fourth valve port to communicate with the fifth valve port.

[0040] Furthermore, step S200 further includes "in the ultra-low temperature heating mode, controlling the fourth valve body to close; after a preset time, controlling the fifth valve body to close; after the fourth valve body and the fifth valve body are closed, controlling the first valve body, the second valve body and the third valve body to open". Thereby, in the ultra-low temperature heating mode, that is, when compressed air is required, most of the refrigerant can be retained in the first heat exchange pipeline of the condenser and the evaporator, and the remaining refrigerant is retained in the refrigerant circuit between the fourth valve body and the fifth valve body (at the position corresponding to the throttling device), so as to ensure the heating efficiency in the next normal heating mode. In addition. Since the internal volume of the compressor is negligible compared to the condenser and the evaporator, there is no need to worry about the purity problem when switching the compressed medium.

[0041] Among them, control buttons for normal heating mode and ultra-low temperature heating mode can be set on the control terminal, for example, the remote control or the APP of the mobile terminal is provided with selection buttons for normal heating mode and ultra-low temperature heating mode. When the selection button for normal heating mode is selected, the normal heating mode is executed, and when the ultra-low temperature heating mode is selected, the ultra-low temperature heating mode is executed. Of course, this is not restrictive. For example, after the program meets a certain condition, one of the normal heating mode and the ultra-low temperature heating mode is automatically executed. For example, after receiving the heating instruction, if the outdoor temperature is lower than the outer ring temperature threshold (such as -20°C), the ultra-low temperature heating mode is automatically controlled to start. When the outdoor temperature is greater than or equal to the outer ring temperature threshold (-20°C), the normal heating mode is automatically controlled to start. These changes do not deviate from the principles of the present invention and are within the protection scope of the present invention.

[0042] Those skilled in the art can understand that the above-mentioned temperature regulating device also includes some other well-known structures, such as a processor, a controller, a memory, etc., wherein the memory includes but is not limited to a random access memory, a flash memory, a read-only memory, a programmable read-only memory, a volatile memory, a non-volatile memory, a serial memory, a parallel memory or a register, etc., and the processor includes but is not limited to a CPLD / FPGA, a DSP, an ARM processor, a MIPS processor, etc. In order to unnecessarily obscure the embodiments of the present disclosure, these well-known structures are not shown in the drawings.

[0043] Although the various steps in the above embodiment are described in the above-mentioned order, those skilled in the art will understand that in order to achieve the effect of this embodiment, different steps do not have to be executed in such an order, and they can be executed simultaneously (in parallel) or in a reverse order. For example, step S100 and step S200 can be executed in parallel or in a reverse order. These simple changes are within the scope of protection of the present invention.

[0044] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A heat pump system, characterized in that: The heat pump system comprises: A refrigerant circuit, wherein a compressor, a condenser, a throttling device and an evaporator are sequentially arranged on the refrigerant circuit; The condenser comprises a first heat exchange pipeline and a second heat exchange pipeline, and both ends of the first heat exchange pipeline are connected to the refrigerant circuit; A refrigerant flow path, the compressor is also arranged on the refrigerant flow path, the refrigerant flow path is connected with the outside air and the second heat exchange pipeline; The on-off of the refrigerant circuit and the refrigerant flow path can be controlled separately.

2. The heat pump system according to claim 1, characterized in that: The refrigerant flow path includes a first refrigerant pipeline and a second refrigerant pipeline, one end of the first refrigerant pipeline is connected to the outside air, the other end of the first refrigerant pipeline is connected to the input end of the compressor, one end of the second refrigerant pipeline is connected to the output end of the compressor, and the other end of the second refrigerant pipeline is connected to the inlet of the second heat exchange pipeline; The first refrigerant pipeline is provided with a first valve body, and the second refrigerant pipeline is provided with a second valve body.

3. The heat pump system according to claim 2, characterized in that: The refrigerant flow path also includes a third refrigerant pipeline, the third refrigerant pipeline is connected to the outlet of the second heat exchange pipeline, and a third valve body is provided on the third refrigerant pipeline.

4. The heat pump system according to claim 3, characterized in that: A fourth valve body is provided on the refrigerant circuit between the first refrigerant pipeline and the evaporator, and a fifth valve body is provided on the refrigerant circuit between the second refrigerant pipeline and the condenser.

5. The heat pump system according to claim 4, characterized in that: The second valve body and the fifth valve body together form a first three-way valve, one valve port of the first three-way valve is connected to the second refrigerant pipeline, and the other two valve ports of the first three-way valve are connected to the refrigerant circuit; or The second valve body and the fifth valve body are both solenoid valves.

6. The heat pump system according to claim 4, characterized in that: The first valve body and the fourth valve body together form a second three-way valve, one valve port of the second three-way valve is connected to the first refrigerant pipeline, and the other two valve ports of the second three-way valve are connected to the refrigerant circuit; or The first valve body and the fourth valve body are both solenoid valves.

7. A temperature regulating device, characterized in that: The temperature regulating device comprises the heat pump system according to any one of claims 1 to 6.

8. A method for controlling a temperature regulating device, characterized in that: The temperature regulating device comprises a heat pump system, and the heat pump system comprises: A refrigerant circuit, wherein a compressor, a condenser, a throttling device and an evaporator are sequentially arranged on the refrigerant circuit; The condenser comprises a first heat exchange pipeline and a second heat exchange pipeline, and both ends of the first heat exchange pipeline are connected to the refrigerant circuit; A refrigerant flow path, the compressor is also arranged on the refrigerant flow path, the refrigerant flow path is connected with the outside air and the second heat exchange pipeline; Wherein, the on-off of the refrigerant circuit and the refrigerant flow path can be controlled separately; The control method comprises: In normal heating mode, controlling the refrigerant circuit to be connected, controlling the refrigerant flow path to be blocked, and controlling the compressor to start; In the ultra-low temperature heating mode, the refrigerant circuit is controlled to be blocked, the refrigerant flow path is controlled to be connected, and the compressor is controlled to start.

9. The control method of the temperature adjustment device according to claim 8, characterized in that: The refrigerant flow path includes a first refrigerant pipeline and a second refrigerant pipeline, one end of the first refrigerant pipeline is connected to the outside air, the other end of the first refrigerant pipeline is connected to the input end of the compressor, one end of the second refrigerant pipeline is connected to the output end of the compressor, and the other end of the second refrigerant pipeline is connected to the inlet of the second heat exchange pipeline; a first valve body is provided on the first refrigerant pipeline, and a second valve body is provided on the second refrigerant pipeline; The refrigerant flow path further includes a third refrigerant pipeline, the third refrigerant pipeline is connected to the outlet of the second refrigerant pipeline, and a third valve body is provided on the third refrigerant pipeline; A fourth valve body is provided on the refrigerant circuit between the first refrigerant pipeline and the evaporator, and a fifth valve body is provided on the refrigerant circuit between the second refrigerant pipeline and the condenser; The step of "controlling the refrigerant circuit to be connected and controlling the refrigerant flow path to be blocked in the normal heating mode" further includes: In the normal heating mode, the fourth valve body and the fifth valve body are controlled to be opened, and the first valve body, the second valve body and the third valve body are controlled to be closed; The step of "controlling the blocking of the refrigerant circuit and controlling the connection of the refrigerant flow path in the ultra-low temperature heating mode" further includes: In the ultra-low temperature heating mode, the fourth valve body and the fifth valve body are controlled to be closed, and the first valve body, the second valve body and the third valve body are controlled to be opened.

10. The control method of the temperature adjustment device according to claim 9, characterized in that: The step of "controlling the fourth valve body and the fifth valve body to close, and controlling the first valve body, the second valve body and the third valve body to open" further includes: Controlling the fourth valve body to close; After a preset time, controlling the fifth valve body to close; After the fourth valve body and the fifth valve body are closed, the first valve body, the second valve body and the third valve body are controlled to open.

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