Air conditioner

Abstract

This utility model discloses an air conditioner, comprising: a compressor; a throttling device; an outdoor heat exchanger; and an indoor heat exchanger. The indoor heat exchanger includes: a heat exchanger body; a first connecting pipe; a second connecting pipe; a flow pipe; a temperature sensing bulb; a housing; a first diaphragm; and a second diaphragm. A temperature-sensing medium is disposed within the temperature sensing bulb and the first cavity. When the temperature-sensing medium expands, the first diaphragm expands, and the second diaphragm contracts to reduce the space of the second cavity. When the temperature-sensing medium contracts, the first diaphragm contracts, and the second diaphragm expands to increase the space of the second cavity. By providing the first and second diaphragms, which are smooth and without protrusions, secondary throttling of the refrigerant is avoided while increasing resistance. This design can be applied to indoor heat exchangers with high noise requirements. Furthermore, the deformation of the first and second diaphragms can control the refrigerant flow rate, achieving the goal of a small temperature difference during cooling and good heating comfort during heating.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to an air conditioner. Background Technology

[0002] In related technologies, indoor heat exchangers adjust the flow distribution by changing the diameter and length of the flow pipe, and are a fixed flow distribution component. However, during heating and cooling, due to different flow distribution requirements, throttling cannot be effectively achieved, and noise is easily generated, making them unsuitable for air conditioners with high noise control requirements. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes an air conditioner that can increase resistance without causing secondary throttling of the refrigerant. In addition, it can achieve the purpose of small temperature difference in the indoor heat exchanger during cooling and good heating comfort during heating.

[0004] To achieve the above objectives, an air conditioner is proposed according to an embodiment of the present invention. The air conditioner includes: a compressor; a throttling device; an outdoor heat exchanger connected to both the compressor and the throttling device; and an indoor heat exchanger connected to both the compressor and the throttling device. The indoor heat exchanger includes: a heat exchanger body; a first connecting pipe connected between the heat exchanger body and the throttling device; a second connecting pipe connected between the heat exchanger body and the compressor; the indoor heat exchanger further includes: a flow pipe connected to the first connecting pipe; a temperature sensor disposed on the outside of the second connecting pipe; and a housing disposed within the compressor. The outer side of the flow tube; a first diaphragm, deformably disposed within the box body, defining a first cavity between the first diaphragm and the box body, the first cavity being connected to the temperature-sensing bulb; a second diaphragm, deformably disposed within the flow tube, defining a second cavity between the second diaphragm and the flow tube, the second diaphragm being connected to the first diaphragm; wherein, a temperature-sensing medium is disposed within the temperature-sensing bulb and the first cavity, the temperature-sensing medium expanding when heated and contracting when cooled; when the temperature-sensing medium expands, the first diaphragm expands and the second diaphragm contracts to reduce the space of the second cavity; when the temperature-sensing medium contracts, the first diaphragm contracts and the second diaphragm expands to increase the space of the second cavity.

[0005] The above technical solution has the following advantages or beneficial effects: by setting a first diaphragm and a second diaphragm, the first diaphragm and the second diaphragm are smooth and without protruding points, which increases resistance without causing secondary throttling of the refrigerant. It can be applied to indoor heat exchangers with high noise requirements. In addition, the deformation of the first diaphragm and the second diaphragm can control the flow of refrigerant, so as to achieve the purpose of small flow temperature difference when cooling and good heating comfort when heating.

[0006] According to some embodiments of the present invention, the first diaphragm expands toward the second diaphragm, and the second diaphragm expands toward the first diaphragm.

[0007] The above technical solution has the following advantages or beneficial effects: When the temperature-sensing medium expands, the first diaphragm expands in the direction of the second diaphragm, that is, the first diaphragm expands outward, increasing the space of the first cavity. The outward expansion of the first diaphragm causes the second diaphragm to contract, thereby reducing the space of the second cavity. When the temperature-sensing medium contracts, the first diaphragm contracts, and the second diaphragm expands in the direction of the first diaphragm, reducing the space of the first cavity. That is, the first diaphragm contracts inward, and the inward contraction of the first diaphragm causes the second diaphragm to expand outward, thereby increasing the space of the second cavity.

[0008] According to some embodiments of the present invention, the indoor heat exchanger further includes: a connector, one end of which is connected to the first diaphragm, and the other end of which passes through the flow tube and is connected to the second diaphragm, so that when the first diaphragm expands, the second diaphragm contracts, and when the first diaphragm contracts, the second diaphragm expands.

[0009] The above technical solution has the following advantages or beneficial effects: the connector can play a connecting role, and the two ends of the connector are respectively connected to the first diaphragm and the second diaphragm, so that the second diaphragm can be connected to the first diaphragm. Thus, when the temperature sensing medium expands, the first diaphragm expands and the second diaphragm contracts to reduce the space of the second cavity. When the temperature sensing medium contracts, the first diaphragm contracts and the second diaphragm expands to increase the space of the second cavity.

[0010] According to some embodiments of the present invention, the indoor heat exchanger further includes a sealing element disposed between the connector and the flow pipe.

[0011] The above technical solution has the following advantages or beneficial effects: the sealing element can play a sealing role. By placing the sealing element between the connector and the flow pipe, while ensuring that the connecting rod can slide freely, the leakage of the temperature-sensing medium in the first cavity can be prevented. In addition, the refrigerant in the flow pipe can be isolated from the external environment, thereby ensuring the unity of the system's airtightness and mechanical linkage.

[0012] According to some embodiments of the present invention, the indoor heat exchanger further includes: an elastic element disposed in the second cavity, one end of the elastic element being connected to the inner wall of the flow pipe, and the other end of the elastic element being connected to the second diaphragm to provide elastic force to the second diaphragm.

[0013] The above technical solution has the following advantages or beneficial effects: the elastic element can provide elastic force and play a role in elastic adjustment. The two ends of the elastic element are respectively connected to the inner wall of the flow tube and the second diaphragm. The elastic element can provide elastic force to the second diaphragm. When the temperature-sensing medium expands, the first diaphragm expands, the first cavity space increases, the elastic element is compressed, the elastic element compresses the second diaphragm, the second diaphragm contracts, and the second cavity space decreases. When the temperature-sensing medium contracts, the first diaphragm contracts, the first cavity space decreases, the elastic element extends, and the elastic element drives the expansion towards the first diaphragm. At this time, the second cavity space increases. Thus, the flow rate of the refrigerant can be controlled by the deformation of the first and second diaphragms.

[0014] According to some embodiments of the present invention, the connector and the elastic member are disposed opposite to each other in the expansion direction of the first diaphragm.

[0015] The above technical solution has the following advantages or beneficial effects: When the temperature-sensing medium expands, the first diaphragm expands, the space of the first cavity increases, the connecting rod moves in the direction of the expansion of the first diaphragm, the connecting rod compresses the elastic element, the elastic element compresses the second diaphragm, the second diaphragm contracts, and the space of the second cavity decreases. When the temperature-sensing medium contracts, the first diaphragm contracts, the space of the first cavity decreases, the connecting rod moves in the direction of the contraction of the first diaphragm, the connecting rod drives the elastic element to extend, the elastic element drives it to expand in the direction of the first diaphragm, and the space of the second cavity increases. Thus, the flow rate of the refrigerant can be controlled by the deformation of the first and second diaphragms.

[0016] According to some embodiments of this utility model, the connecting member is a connecting rod structure and the elastic member is a spring structure.

[0017] The above technical solution has the following advantages or beneficial effects: The connecting rod structure has advantages such as high transmission accuracy, simple structure, and flexible spatial layout. Setting the connecting part as a connecting rod structure makes the connecting part more in line with the actual working conditions. It can play a connecting role and can be used to connect the first diaphragm and the second diaphragm. It can realize that when the first diaphragm expands, the second diaphragm contracts, and when the first diaphragm contracts, the second diaphragm expands. The spring structure has advantages such as simple structure, good durability, and buffering effect. Setting the elastic element as a spring structure makes the elastic element more in line with the actual working conditions. It can be used to connect the inner wall of the flow tube and the second diaphragm and can provide elastic force to the second diaphragm to realize the contraction and expansion of the second diaphragm.

[0018] According to some embodiments of the present invention, the indoor heat exchanger further includes a connecting pipe, which is connected between the temperature sensing bulb and the first cavity.

[0019] The above technical solution has the following advantages or beneficial effects: the connecting tube can play a connecting role, and the first cavity can be connected to the temperature sensing bulb through the connecting tube. In this way, when the temperature sensing medium expands, the first diaphragm expands and the second diaphragm contracts to reduce the space of the second cavity, and when the temperature sensing medium contracts, the first diaphragm contracts and the second diaphragm expands to increase the space of the second cavity.

[0020] According to some embodiments of this utility model, the temperature sensing bulb is fitted to the second connecting tube.

[0021] The above technical solution has the following advantages or beneficial effects: The temperature sensing bulb should be closely attached to the outside of the second connecting pipe so that the temperature sensing bulb can directly sense the temperature change of the refrigerant. Specifically, the temperature of the second connecting pipe can directly reflect the state of the refrigerant when it leaves the indoor heat exchanger. If the temperature is too low, it means that the refrigerant has not completely evaporated and there is a risk of liquid entering the compressor. If the temperature is too high, it means that the amount of refrigerant in the indoor heat exchanger is insufficient and the heat exchange area is not fully utilized. By attaching the temperature sensing bulb to the second connecting pipe, the throttling device can make the most direct feedback adjustment.

[0022] According to some embodiments of the present invention, the first connecting tube forms multiple flow paths, and the multiple flow paths are arranged sequentially at intervals in the vertical direction, and the second diaphragm is disposed on the flow path located at the bottommost position.

[0023] The above technical solution has the following advantages or beneficial effects: During cooling, after the temperature in the middle of the indoor heat exchanger reaches the dew point temperature of the air flowing through it, a large amount of condensate will be generated on its surface. The condensate flows from top to bottom and accumulates at the bottom of the indoor heat exchanger. Under this condition, the refrigerant required for the bottommost flow path needs to be reduced accordingly. The second diaphragm can ensure that the refrigerant in the bottommost flow path can fully exchange heat, which is beneficial to the cooling and condensation effects. During heating, no condensate will be generated on the surface of the indoor heat exchanger. Therefore, the refrigerant required for the bottommost flow path is the same as that for other flow paths. The second diaphragm can ensure that the refrigerant in the bottommost flow path is the same as that for other flow paths, thus not affecting the heating comfort of the bottommost flow path. This can solve the problem of different amounts of refrigerant required by the air conditioner in cooling and heating conditions, thereby achieving the goal of small flow temperature difference when the indoor heat exchanger is cooling and good heating comfort when heating.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the first structure of the indoor heat exchanger; Figure 2 This is a schematic diagram of the second structure of the indoor heat exchanger; Figure 3 This is a schematic diagram of the third structure of the indoor heat exchanger; Figure 4 This is a schematic diagram of the first part of the indoor heat exchanger. Figure 5 This is a schematic diagram of the second part of the indoor heat exchanger.

[0026] Figure label: 1. Indoor heat exchanger; 10. Heat exchanger body; 20. First connecting pipe; 30. Second connecting pipe; 40. Temperature sensing bulb; 50. Box body; 60. First diaphragm; 600. First cavity; 70. Second diaphragm; 700. Second cavity; 80. Connecting piece; 90. Elastic element; 100. Connecting pipe; 110. Connecting pipe. Detailed Implementation

[0027] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0028] The following is for reference. Figures 1-5 This invention describes an air conditioner according to an embodiment of the present invention.

[0029] The indoor heat exchanger is part of the air conditioner's structure. The specific structure of the air conditioner will be described in detail below.

[0030] An air conditioner consists of an indoor unit and an outdoor unit, which are connected by pipes to transfer refrigerant. The indoor unit includes an indoor heat exchanger and an indoor fan. The outdoor unit includes a compressor, a four-way valve, an outdoor heat exchanger, an outdoor fan, and an expansion valve. The compressor, outdoor heat exchanger, expansion valve, and indoor heat exchanger, connected in sequence, form a refrigerant circuit. The refrigerant circulates in this circuit and exchanges heat with the air through the outdoor and indoor heat exchangers to achieve either the cooling or heating mode of the cabinet air conditioner.

[0031] The compressor is configured to compress the refrigerant so that the low-pressure refrigerant is compressed to form a high-pressure refrigerant.

[0032] The outdoor heat exchanger is configured to exchange heat between outdoor air and refrigerant transported within it. For example, in the cooling mode of a cabinet air conditioner, the outdoor heat exchanger functions as a condenser, causing the refrigerant compressed by the compressor to dissipate heat to the outdoor air and condense. In the heating mode of the cabinet air conditioner, the outdoor heat exchanger functions as an evaporator, causing the depressurized refrigerant to absorb heat from the outdoor air and evaporate.

[0033] In some embodiments, the outdoor heat exchanger further includes heat exchange fins to increase the contact area between the outdoor air and the refrigerant transported in the outdoor heat exchanger, thereby improving the heat exchange efficiency between the outdoor air and the refrigerant.

[0034] The outdoor fan is configured to draw outdoor air into the outdoor unit through the outdoor air inlet and expel the outdoor air, after it has been heated by the outdoor heat exchanger, through the outdoor air outlet. The outdoor fan provides power for the flow of outdoor air.

[0035] An expansion valve connects the outdoor and indoor heat exchangers. The opening degree of the expansion valve regulates the refrigerant pressure flowing through both heat exchangers, thereby regulating the refrigerant flow rate between them. The flow rate and pressure of the refrigerant flowing between the outdoor and indoor heat exchangers affect their heat exchange performance. The expansion valve can be an electronic valve, and its opening degree is adjustable to control the refrigerant flow rate and pressure.

[0036] The four-way valve is connected to the refrigerant circuit and is configured to switch the flow direction of the refrigerant in the refrigerant circuit so that the cabinet air conditioner can perform cooling mode or heating mode.

[0037] The indoor heat exchanger is configured to exchange heat between indoor air and refrigerant transported within it. For example, in the cooling mode of a cabinet air conditioner, the indoor heat exchanger operates as an evaporator, causing the refrigerant, after dissipating heat from the outdoor heat exchanger, to absorb heat from the indoor air and evaporate. In the heating mode of the cabinet air conditioner, the indoor heat exchanger operates as a condenser, causing the refrigerant, after absorbing heat from the outdoor heat exchanger, to dissipate heat to the indoor air and condense.

[0038] In some embodiments, the indoor heat exchanger further includes heat exchange fins to increase the contact area between indoor air and the refrigerant transported in the indoor heat exchanger, thereby improving the heat exchange efficiency between indoor air and the refrigerant.

[0039] The indoor fan is configured to draw indoor air into the indoor unit through the third air inlet and discharge the indoor air, after heat exchange with the indoor heat exchanger, through the fourth air outlet. The indoor fan provides power for the airflow.

[0040] Floor-standing air conditioners also include a control unit, which is mainly used to control the compressor's operating frequency, the expansion valve's opening degree, the outdoor fan's speed, and the indoor fan's speed. The control unit is connected to the compressor, expansion valve, outdoor fan, and indoor fan via data cables to transmit communication information.

[0041] The control device includes a processor, which may include a central processing unit (CPU), a microprocessor, or an application-specific integrated circuit (ASIC), and may be configured to perform corresponding operations described in the control device when the processor executes a program stored in a non-transitory computer-readable medium coupled to the control device. The non-transitory computer-readable storage medium may include magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), smart cards, or flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, or keyboard drivers).

[0042] The air conditioner according to an embodiment of this utility model may include: a compressor, a throttling device, an outdoor heat exchanger, and an indoor heat exchanger 1. The compressor compresses the low-temperature, low-pressure refrigerant gas from the indoor unit into a high-temperature, high-pressure gas, increasing the pressure and temperature of the refrigerant and enabling it to release heat in the external environment. The throttling device reduces the pressure and temperature of the refrigerant, creating conditions for heat exchange in the indoor heat exchanger 1 and regulating the refrigerant flow rate into the indoor heat exchanger 1. When the outdoor heat exchanger acts as a condenser and the indoor heat exchanger 1 acts as an evaporator, the outdoor heat exchanger cools the high-temperature, high-pressure gas compressed by the compressor and converts it into a liquid. The liquid refrigerant in the indoor heat exchanger 1 absorbs heat from the indoor air and evaporates into gas, thereby cooling the air. The throttling device may be configured as an expansion valve.

[0043] The outdoor heat exchanger is connected to both the compressor and the throttling device, while the indoor heat exchanger 1 is also connected to both the compressor and the throttling device. In an air conditioner, the outdoor heat exchanger, compressor, throttling device, and indoor heat exchanger 1 are four core components, interconnected by a series of pipes to form a closed-loop system. When the outdoor heat exchanger acts as the condenser and the indoor heat exchanger 1 acts as the evaporator, the compressor compresses the low-temperature, low-pressure gaseous refrigerant from the indoor heat exchanger 1 into a high-temperature, high-pressure gas. This high-temperature, high-pressure gaseous refrigerant is then transported through pipes to the outdoor heat exchanger to achieve refrigerant circulation and heat exchange.

[0044] like Figure 1As shown, the indoor heat exchanger 1 includes: a heat exchanger body 10, a first connecting pipe 20 connecting the heat exchanger body 10 and a throttling device, and a second connecting pipe 30 connecting the heat exchanger body 10 and a compressor. The heat exchanger body 10 is the main component of the indoor heat exchanger 1. When the indoor heat exchanger 1 is an evaporator, the refrigerant absorbs heat and evaporates into gas in the heat exchanger body 10, thereby lowering the ambient temperature. When the air conditioner is in cooling mode, the refrigerant can flow from the throttling device through the first connecting pipe 20. The first connecting pipe 20 can introduce low-temperature, low-pressure liquid refrigerant into the heat exchanger body 10. After entering the heat exchanger body 10 through the first connecting pipe 20, the refrigerant begins the heat absorption process. Then, the refrigerant flows through the second connecting pipe 30 to the compressor. The second connecting pipe 30 can then exit the heat exchanger body 10 with the refrigerant that has absorbed a large amount of heat and converted into gas. 0. The refrigerant is sent to the compressor for recompression and continues to the next cycle. When the air conditioner is in heating mode, the low-temperature and low-pressure gaseous refrigerant is drawn into the compressor. The compressor does work on the refrigerant and compresses it into a high-temperature and high-pressure gaseous refrigerant. The second connecting pipe 30 can introduce the high-temperature and high-pressure gaseous refrigerant into the heat exchanger body 10. After the refrigerant enters the heat exchanger body 10 through the second connecting pipe 30, it begins to release heat. Then it flows through the first connecting pipe 20 to the throttling device. The first connecting pipe 20 can lead the refrigerant that has released a lot of heat and turned into liquid out of the heat exchanger body 10. After being throttled by the throttling device, the refrigerant becomes a low-temperature and low-pressure liquid.

[0045] like Figures 1-5 As shown, the indoor heat exchanger 1 also includes: a flow pipe 110 connected to the first connecting pipe 20; a temperature sensing bulb 40 disposed outside the second connecting pipe 30; and a housing 50 disposed outside the flow pipe 110. The flow pipe 110 serves as a connecting pipe for refrigerant flow. It can be connected to the first connecting pipe 20 by welding. The temperature sensing bulb 40 is used to detect the superheat of the refrigerant at the outlet of the indoor heat exchanger 1. Distributed outside the second connecting pipe 30, it accurately senses the temperature of the refrigerant. The housing 50 is disposed outside the flow pipe 110, meaning it connects the flow pipe 110 to the heat exchanger body 10. This allows the refrigerant flowing from the flow pipe 110 to be evenly distributed into multiple flow paths of the heat exchanger body 10, thus regulating the amount of refrigerant in each flow path.

[0046] like Figures 2-5As shown, the indoor heat exchanger 1 may include: a first diaphragm 60, which is deformably disposed within a housing 50, and defines a first cavity 600 between the first diaphragm 60 and the housing 50, the first cavity 600 being connected to a temperature sensing bulb 40. The first diaphragm 60 has good elasticity, and the first cavity 600 can be used to house a temperature sensing medium. The temperature sensing medium expands when heated and contracts when cooled. That is, when the temperature sensing bulb 40 senses a temperature change, the pressure of the internal temperature sensing medium changes. The temperature sensing bulb 40 is connected to the first cavity 600, and the pressure change of the temperature sensing medium is transmitted to the first cavity 600. The pressure change within the first cavity 600 can act on the first diaphragm 60, causing the first diaphragm 60 to undergo elastic deformation, thereby stabilizing the superheat of the indoor heat exchanger 1.

[0047] like Figures 2-5 As shown, the indoor heat exchanger 1 may include a second diaphragm 70, which is deformably disposed within the flow pipe 110, and defines a second cavity 700 between the second diaphragm 70 and the flow pipe 110. The second diaphragm 70 is connected to the first diaphragm 60. The second diaphragm 70 has good elasticity. The deformation of the first diaphragm 60 can cause the deformation of the second diaphragm 70, which in turn causes the second cavity 700 to increase or decrease. When the second cavity 700 increases, the refrigerant flow space decreases, and the resistance increases, thereby reducing the amount of refrigerant in the flow pipe 110. When the second cavity 700 decreases, the refrigerant flow space increases, and the resistance decreases, thereby increasing the amount of refrigerant in the flow pipe 110. This solves the problem of different refrigerant requirements in cooling and heating modes of the air conditioner. The second diaphragm 70 and the flow tube 110 can be configured as an integral structure.

[0048] like Figure 2 and Figure 4As shown, a temperature-sensing medium is provided inside the temperature-sensing bulb 40 and the first cavity 600. The temperature-sensing medium expands when heated and contracts when cooled. When the temperature-sensing medium expands, the first diaphragm 60 expands and the second diaphragm 70 contracts to reduce the space of the second cavity 700. It should be noted that the temperature-sensing medium is filled in the temperature-sensing bulb 40 and the first cavity 600. The temperature-sensing medium expands when heated and contracts when cooled. In other words, the temperature-sensing medium has the characteristic of expanding or contracting with temperature changes. It can change the internal pressure of the temperature-sensing bulb 40 and the first cavity 600, and can convert temperature changes into pressure signals. When the indoor heat exchanger 1 is an evaporator, when the air conditioner is in heating mode, the second connecting pipe 30 of the indoor heat exchanger 1 is in a high-temperature state. At this time, the temperature-sensing medium in the temperature-sensing bulb 40 expands under high temperature, and its volume increases. Since the first cavity 600 is connected to the temperature-sensing bulb 40, the temperature-sensing medium in the first cavity 600 expands at the same time, and the pressure in the first cavity 600 increases. At this time, the first diaphragm 60 expands outward, the space of the first cavity 600 increases, and the outward expansion of the first diaphragm 60 drives the second diaphragm 70 to contract, thereby reducing the space of the second cavity 700. This can increase the flow space of the refrigerant and reduce the resistance, thereby increasing the amount of refrigerant in the flow pipe 110.

[0049] like Figure 3 and Figure 5 As shown, when the temperature-sensing medium contracts, the first diaphragm 60 contracts and the second diaphragm 70 expands to increase the space of the second cavity 700. When the indoor heat exchanger 1 is an evaporator, and the air conditioner is in cooling mode, the second connecting pipe 30 of the indoor heat exchanger 1 is in a low-temperature state. At this time, the temperature sensing medium in the temperature sensing bulb 40 decreases in volume due to the cold. Since the first cavity 600 is connected to the temperature sensing bulb 40, the temperature sensing medium in the first cavity 600 also decreases in volume, and the pressure in the first cavity 600 decreases. At this time, the first diaphragm 60 contracts inward, reducing the space in the first cavity 600. The inward contraction of the first diaphragm 60 drives the second diaphragm 70 to expand outward, thereby increasing the space in the second cavity 700. This reduces the flow space of the refrigerant and increases the resistance, thus reducing the amount of refrigerant in the flow pipe 110. The deformation of the first diaphragm 60 and the second diaphragm 70 can control the flow of refrigerant, solving the problem of different amounts of refrigerant required by the air conditioner in cooling and heating modes. This achieves the goal of small temperature difference during cooling and good heating comfort during heating in the indoor heat exchanger 1.

[0050] Thus, by setting a first diaphragm 60 and a second diaphragm 70, which are smooth and without protruding points, the resistance is increased without causing secondary throttling of the refrigerant. This can be applied to indoor heat exchangers 1 with high noise requirements. In addition, the deformation of the first diaphragm 60 and the second diaphragm 70 can control the flow of refrigerant, so that the indoor heat exchanger 1 can achieve the purpose of small flow temperature difference during cooling and good heating comfort during heating.

[0051] In some specific embodiments of this utility model, such as Figures 2-5 As shown, the first diaphragm 60 expands towards the second diaphragm 70, and the second diaphragm 70 expands towards the first diaphragm 60. When the temperature-sensing medium expands, the first diaphragm 60 expands towards the second diaphragm 70, meaning that the first diaphragm 60 expands outward, increasing the space of the first cavity 600. The outward expansion of the first diaphragm 60 causes the second diaphragm 70 to contract, thus reducing the space of the second cavity 700. When the temperature-sensing medium contracts, the first diaphragm 60 contracts, reducing the space of the first cavity 600, and the second diaphragm 70 expands towards the first diaphragm 60, meaning that the first diaphragm 60 contracts inward. The inward contraction of the first diaphragm 60 causes the second diaphragm 70 to expand outward, thus increasing the space of the second cavity 700.

[0052] In some specific embodiments of this utility model, such as Figures 2-5 As shown, the indoor heat exchanger 1 also includes a connector 80, one end of which is connected to the first diaphragm 60, and the other end of which passes through the flow tube 110 and is connected to the second diaphragm 70, so that when the first diaphragm 60 expands, the second diaphragm 70 contracts, and when the first diaphragm 60 contracts, the second diaphragm 70 expands. The connector 80 serves a connecting function, with its two ends connected to the first diaphragm 60 and the second diaphragm 70 respectively. This connection between the second diaphragm 70 and the first diaphragm 60 allows the refrigerant flow to be controlled by the deformation of the first diaphragm 60 and the second diaphragm 70. When the temperature-sensing medium expands, the first diaphragm 60 expands, increasing the space in the first cavity 600. The first diaphragm 60 then moves the connector 80 closer to the second diaphragm 70, causing the second diaphragm 70 to contract and the space in the second cavity 700 to decrease. Conversely, when the temperature-sensing medium contracts, the first diaphragm 60 contracts, decreasing the space in the first cavity 600. The first diaphragm 60 then moves the connector 80 away from the second diaphragm 70, causing the second diaphragm 70 to expand and the space in the second cavity 700 to increase. The connector 80 can be configured as a conductive rod.

[0053] In some specific embodiments of this utility model, the indoor heat exchanger 1 further includes a sealing element disposed between the connector 80 and the flow pipe 110. The sealing element serves a sealing function. By placing the sealing element between the connector 80 and the flow pipe 110, while ensuring that the connector 80 can slide freely, leakage of the temperature-sensing medium within the first cavity 600 can be prevented. Additionally, it isolates the refrigerant within the flow pipe 110 from the external environment, thereby ensuring the unity of the system's airtightness and mechanical linkage.

[0054] In some specific embodiments of this utility model, such as Figures 2-5As shown, the indoor heat exchanger 1 also includes an elastic element 90, which is disposed within the second cavity 700. One end of the elastic element 90 is connected to the inner wall of the flow pipe 110, and the other end is connected to the second diaphragm 70 to provide elastic force to the second diaphragm 70. The elastic element 90 provides elastic force, playing a role in elastic adjustment. The placement of the elastic element 90 within the second cavity 700 allows for efficient use of the space within the second cavity 700. With one end connected to the inner wall of the flow pipe 110 and the other end connected to the second diaphragm 70, the two ends of the elastic element 90 are respectively connected to the inner wall of the flow pipe 110 and the second diaphragm 70. The elastic element 90 provides elastic force to the second diaphragm 70. When the temperature-sensing medium expands, the first diaphragm 60 expands, increasing the space within the first cavity 600, and the first diaphragm 60 drives the connected... When component 80 moves closer to the second diaphragm 70, elastic component 90 is compressed, compressing the second diaphragm 70, causing it to contract. At this time, the space of the second cavity 700 decreases. When the temperature-sensing medium contracts, the first diaphragm 60 contracts, further reducing the space of the first cavity 600. The first diaphragm 60 then drives the connecting component 80 to move away from the second diaphragm 70, causing the elastic component 90 to extend. The elastic component 90 then expands towards the first diaphragm 60, increasing the space of the second cavity 700. Thus, the flow rate of the refrigerant can be controlled by the deformation of the first diaphragm 60 and the second diaphragm 70.

[0055] In some specific embodiments of this utility model, such as Figures 2-5 As shown, in the expansion direction of the first diaphragm 60, the connector 80 and the elastic element 90 are arranged opposite to each other. When the temperature-sensing medium expands, the first diaphragm 60 expands, the space of the first cavity 600 increases, the connector 80 moves in the direction of expansion of the first diaphragm 60, the connector 80 compresses the elastic element 90, the elastic element 90 compresses the second diaphragm 70, the second diaphragm 70 contracts, and the space of the second cavity 700 decreases. When the temperature-sensing medium contracts, the first diaphragm 60 contracts, the space of the first cavity 600 decreases, the connector 80 moves in the direction of contraction of the first diaphragm 60, the connector 80 drives the elastic element 90 to extend, the elastic element 90 drives it to expand in the direction of the first diaphragm 60, and the space of the second cavity 700 increases. Thus, the flow rate of the refrigerant can be controlled by the deformation of the first diaphragm 60 and the second diaphragm 70.

[0056] In some specific embodiments of this utility model, such as Figures 2-5As shown, connector 80 is a connecting rod structure, and elastic component 90 is a spring structure. The connecting rod structure offers advantages such as high transmission accuracy, simple structure, and flexible spatial layout. Setting connector 80 as a connecting rod structure better suits actual working conditions, serving a connecting function. It can connect the first diaphragm 60 and the second diaphragm 70, allowing the second diaphragm 70 to contract when the first diaphragm 60 expands and expand when the first diaphragm 60 contracts. The spring structure offers advantages such as simple structure, good durability, and buffering effect. Setting elastic component 90 as a spring structure better suits actual working conditions. It can connect the inner wall of the flow pipe 110 and the second diaphragm 70, providing elastic force to the second diaphragm 70 to achieve its contraction and expansion.

[0057] In some specific embodiments of this utility model, such as Figures 1-3As shown, the indoor heat exchanger 1 also includes a connecting pipe 100, which connects the temperature sensing bulb 40 and the first cavity 600. The connecting pipe 100 serves as a connection, allowing the first cavity 600 to be connected to the temperature sensing bulb 40. This enables the first diaphragm 60 to expand and the second diaphragm 70 to contract when the temperature sensing medium expands, thus reducing the space of the second cavity 700; conversely, when the temperature sensing medium contracts, the first diaphragm 60 contracts and the second diaphragm 70 expands, thus increasing the space of the second cavity 700. Specifically, when the indoor heat exchanger 1 is an evaporator, and when the air conditioner is in heating mode, the second connecting pipe 30 of the indoor heat exchanger 1 is at a high temperature. At this time, the temperature-sensing medium inside the temperature-sensing bulb 40 expands under high temperature, increasing its volume. Since the first cavity 600 is connected to the temperature-sensing bulb 40, the temperature-sensing medium inside the first cavity 600 expands simultaneously, increasing the pressure inside the first cavity 600. At this time, the first diaphragm 60 expands outward, increasing the space of the first cavity 600. The outward expansion of the first diaphragm 60 causes the second diaphragm 70 to contract, thereby reducing the space of the second cavity 700. This increases the flow space of the refrigerant and reduces the resistance, thereby increasing the amount of refrigerant in the flow pipe 110. When the indoor heat exchanger 1 is an evaporator, and the air conditioner is in cooling mode, the second connecting pipe 30 of the indoor heat exchanger 1 is at a low temperature. At this time, the temperature-sensing medium in the temperature-sensing bulb 40 decreases in volume due to the cold. Since the first cavity 600 is connected to the temperature-sensing bulb 40, the temperature-sensing medium in the first cavity 600 also decreases in volume, and the pressure in the first cavity 600 decreases. At this time, the first diaphragm 60 contracts inward, reducing the space in the first cavity 600. The inward contraction of the first diaphragm 60 drives the second diaphragm 70 to expand outward, thereby increasing the space in the second cavity 700. This reduces the refrigerant flow space and increases the resistance, thus reducing the amount of refrigerant in the flow pipe 110. This solves the problem of different refrigerant requirements in cooling and heating modes of the air conditioner, thereby achieving the goal of small temperature difference during cooling and good heating comfort during heating. The connecting pipe 100 can be configured as a hollow conductive pipe.

[0058] In some specific embodiments of this utility model, such as Figure 1 As shown, the temperature sensing bulb 40 is fitted against the second connecting pipe 30. The temperature sensing bulb 40 should be tightly fitted against the outside of the second connecting pipe 30 so that it can directly sense the temperature change of the refrigerant. Specifically, when the indoor heat exchanger 1 is an evaporator, the temperature of the second connecting pipe 30 can directly reflect the state of the refrigerant when it leaves the indoor heat exchanger 1. If the temperature is too low, it means that the refrigerant has not completely evaporated, and there is a risk of liquid entering the compressor. If the temperature is too high, it means that the amount of refrigerant in the indoor heat exchanger 1 is insufficient and the heat exchange area is not fully utilized. Fitting the temperature sensing bulb 40 against the second connecting pipe 30 allows the throttling device to make the most direct feedback adjustment.

[0059] In some specific embodiments of this utility model, such as Figure 1 As shown, the first connecting pipe 20 forms multiple flow paths, which are arranged alternately in the vertical direction. The second diaphragm 70 is disposed on the lowest flow path. Multiple flow paths can further improve the uniformity of refrigerant distribution and heat exchange efficiency, thereby improving the heat exchange efficiency of the indoor heat exchanger 1. The alternating arrangement of the multiple flow paths in the vertical direction avoids interference between them and allows for a wider distribution range, which also improves the uniformity of refrigerant distribution and heat exchange efficiency to some extent. The placement of the second diaphragm 70 on the lowest flow path facilitates the collection and distribution of condensate, enhancing the gas-liquid separation effect. Furthermore, when the indoor heat exchanger 1 is an evaporator, during cooling, after the temperature in the middle of the indoor heat exchanger 1 reaches the dew point temperature of the air flowing through it, a large amount of condensate will be generated on its surface. The condensate flows from top to bottom and accumulates at the bottom of the indoor heat exchanger 1. At this time, air circulates at the bottom of the heat exchanger. The amount of refrigerant will decrease, and the heat exchange effect will weaken. The higher the indoor heat exchanger 1 is, the more condensate will be produced, and the worse the heat exchange effect of the bottom flow path will be. Under this condition, the amount of refrigerant required for the bottom flow path should be reduced accordingly. The second diaphragm 70 can enable the refrigerant in the bottom flow path to fully exchange heat, which is beneficial to the cooling and condensation effects. When heating, no condensate will be produced on the surface of the indoor heat exchanger 1. Therefore, the amount of refrigerant required for the bottom flow path is the same as that of other flow paths. The second diaphragm 70 can make the amount of refrigerant in the bottom flow path the same as that of other flow paths, so as not to affect the heating comfort of the bottom flow path. This can solve the problem of different amounts of refrigerant required by the air conditioner in cooling and heating conditions, so as to achieve the purpose of small flow temperature difference in the indoor heat exchanger 1 when cooling and good heating comfort when heating.

[0060] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0061] In the description of this utility model, "first feature" and "second feature" may include one or more of the features. In the description of this utility model, "multiple" means two or more. In the description of this utility model, "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. In the description of this utility model, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0063] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air conditioner, characterized in that, include: compressor; Throttling device; An outdoor heat exchanger is connected to both the compressor and the throttling device. An indoor heat exchanger, connected to both the compressor and the throttling device, comprises: Heat exchanger body; A first connecting pipe is connected between the heat exchanger body and the throttling element; The second connecting pipe is connected between the heat exchanger body and the compressor; Its features are, The indoor heat exchanger also includes: A flow tube, which is connected to the first connecting tube; A temperature sensing bulb is disposed on the outside of the second connecting tube; A housing, which is disposed on the outside of the flow tube; A first diaphragm is deformably disposed within the housing, and a first cavity is defined between the first diaphragm and the housing, the first cavity being connected to the temperature sensing bulb; A second diaphragm is deformably disposed within the flow tube, and a second cavity is defined between the second diaphragm and the flow tube, and the second diaphragm is connected to the first diaphragm. The temperature-sensing bulb and the first cavity are provided with a temperature-sensing medium. The temperature-sensing medium expands when heated and contracts when cooled. When the temperature-sensing medium expands, the first diaphragm expands and the second diaphragm contracts to reduce the space of the second cavity. When the temperature-sensing medium contracts, the first diaphragm contracts and the second diaphragm expands to increase the space of the second cavity.

2. The air conditioner according to claim 1, characterized in that, The first diaphragm expands toward the second diaphragm, and the second diaphragm expands toward the first diaphragm.

3. The air conditioner according to claim 1, characterized in that, The indoor heat exchanger also includes: A connector, one end of which is connected to the first diaphragm, and the other end of which passes through the flow tube and is connected to the second diaphragm, so that when the first diaphragm expands, the second diaphragm contracts, and when the first diaphragm contracts, the second diaphragm expands.

4. The air conditioner according to claim 3, characterized in that, The indoor heat exchanger also includes: A sealing element is disposed between the connector and the flow tube.

5. The air conditioner of claim 3, wherein The indoor heat exchanger also includes: An elastic element is disposed in the second cavity, one end of the elastic element is connected to the inner wall of the flow tube, and the other end of the elastic element is connected to the second diaphragm to provide elastic force to the second diaphragm.

6. The air conditioner according to claim 5, characterized in that, In the expansion direction of the first diaphragm, the connector is disposed opposite to the elastic member.

7. The air conditioner of claim 5, wherein The connecting component is a connecting rod structure, and the elastic component is a spring structure.

8. The air conditioner according to claim 1, characterized in that, The indoor heat exchanger also includes: A connecting tube is provided between the temperature sensing bulb and the first cavity.

9. The air conditioner according to claim 1, characterized in that, The temperature sensing bulb is fitted into the second connecting tube.

10. The air conditioner according to claim 1, characterized in that, The first connecting tube forms multiple flow paths, which are arranged sequentially at intervals in the vertical direction, and the second diaphragm is disposed on the lowest flow path.

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