Vacuum isolation mute compressor for heat pump heating machine

Abstract

The invention relates to a vacuum isolation mute compressor for a heat pump heating machine. A high-pressure exhaust pipe, an air return pipe and an air supply enthalpy increasing pipe are connected to a variable-frequency compressor, and a mounting bracket is arranged at the bottom of the variable-frequency compressor; an upper vacuum isolation layer and a lower vacuum isolation layer are respectively arranged at the top and the bottom of the inverter compressor; a silencing layer surrounds the frequency conversion compressor in the circumferential direction, the upper end of the silencing layer is connected with the upper vacuum isolation layer in a sealed mode, and the lower end of the silencing layer is isolated from the lower vacuum isolation layer in a sealed mode. A damping device is further arranged at the bottom of the inverter compressor and comprises a heat pump heating machine base plate, a first damping device is arranged on the heat pump heating machine base plate, the lower vacuum isolation layer is installed on the first damping device, a second damping device is arranged on the upper portion of the lower vacuum isolation layer, and the inverter compressor is installed on the second damping device. The problem that when an existing heat pump heating device above 10 HP runs to high frequency, a compressor makes noise is solved.

Description

Technical Field

[0001] The present application relates to the technical field of all-DC heat pump air conditioners, and in particular to a vacuum-insulated silent compressor for a heat pump heating machine. Background Art

[0002] The existing low-ring temperature air source heat pump (cold water) unit, commonly known as "full DC variable frequency heating machine", also known as "heat pump heating machine", the noise comes from the frequency noise generated by the compressor when the compressor is variable frequency (increased frequency).

[0003] In the prior art, one or more layers of sound-absorbing and heat-insulating cotton are wrapped around the shell of the variable frequency compressor. In addition, sound-absorbing cotton is pasted inside the sheet metal side panels around the compressor. The purpose is to absorb and isolate the operating noise emitted by the compressor during operation. At present, heat pump heaters below 8HP can meet the low noise requirement of ≤58 decibels accepted by users, but heat pump heaters above 10HP have large compressor power, especially full DC variable frequency heaters above 10HP, and their noise is above 72 decibels. That is, the noise of the silencing solutions using the above-mentioned conventional silencing means exceeds 72 decibels. The existing market environment requires compressors to have low noise of <55 decibels.

[0004] In order to solve the technical problem of the noise generated by the compressor of the heat pump heating system above 10HP when running at high frequency, the present invention designs a new vacuum-isolated silent compressor for heat pump heating system, which is described and implemented through the following technical scheme. Summary of the invention

[0005] Based on this, it is necessary to propose a vacuum-isolated silent compressor for heat pump heating machines to address the lack of noise isolation in traditional heat pump heating processes above 10HP.

[0006] The present invention designs a vacuum-insulated silent compressor for a heat pump heating machine, comprising: a variable frequency compressor of a full DC heat pump heating air conditioner, the variable frequency compressor being connected with a high-pressure exhaust pipe, a return air pipe and an air supply enthalpy increasing pipe, and a mounting bracket being arranged at the bottom of the variable frequency compressor;

[0007] An upper vacuum isolation layer and a lower vacuum isolation layer are respectively arranged on the top and bottom of the variable frequency compressor; a sound-absorbing layer is surrounded by the circumference of the variable frequency compressor, the upper end of the sound-absorbing layer is sealed and connected to the upper vacuum isolation layer, and the lower end of the sound-absorbing layer is sealed and isolated from the lower vacuum isolation layer;

[0008] A shock absorbing device is also provided at the bottom of the variable frequency compressor, and the shock absorbing device includes a heat pump heating machine base plate, a first shock absorbing device is provided on the heat pump heating machine base plate, the lower vacuum insulation layer is installed on the first shock absorbing device, a second shock absorbing device is provided on the upper part of the lower vacuum insulation layer, and the variable frequency compressor is installed on the second shock absorbing device;

[0009] An isolation cavity is formed between the upper vacuum isolation layer, the lower vacuum isolation layer and the above-mentioned sound-absorbing layer, and the above-mentioned isolation cavity is filled with sound-absorbing silicate.

[0010] As an embodiment of the present invention, the projections of the upper vacuum isolation layer and the lower vacuum isolation layer can cover the above-mentioned variable frequency compressor, the upper vacuum isolation layer and the lower vacuum isolation layer are configured as vacuum isolation chambers, the air is evacuated from the vacuum isolation chambers, and a plurality of connecting screw rods are arranged between the upper vacuum isolation layer and the lower vacuum isolation layer, the upper end of each connecting screw rod is connected to the bottom surface of the above-mentioned upper vacuum isolation layer, and the lower end of each connecting screw rod is connected to the top surface of the above-mentioned lower vacuum isolation layer.

[0011] As one embodiment of the present invention, the above-mentioned first shock-absorbing device includes a vacuum layer mounting plate and a plurality of first rubber shock-absorbing pads, the upper end of each first rubber shock-absorbing pad is connected to the above-mentioned vacuum layer mounting plate, and the lower end of each first rubber shock-absorbing pad is connected to the above-mentioned heat pump heating machine base plate.

[0012] As one embodiment of the present invention, the above-mentioned second shock absorbing device includes a compressor mounting plate and a plurality of second rubber shock absorbing pads, the above-mentioned variable frequency compressor is fixed on the above-mentioned compressor mounting plate, the upper end of each of the above-mentioned second rubber shock absorbing pads is connected to the above-mentioned compressor mounting plate, and the lower end of each of the above-mentioned second rubber shock absorbing pads is connected to the above-mentioned lower vacuum isolation layer.

[0013] As an embodiment of the present invention, a sealing tape layer is provided on the outer side of the above-mentioned sound-absorbing layer, the above-mentioned sealing tape layer is sealed on the outer side of the above-mentioned sound-absorbing layer by hot-melt, and an exhaust device is provided on the above-mentioned sealing tape layer.

[0014] As one embodiment of the present invention, the above-mentioned exhaust device includes an exhaust pipe, which passes through the above-mentioned sealing tape layer and is connected to the above-mentioned sound-absorbing layer. The outside of the above-mentioned exhaust pipe is connected to an exhaust gun, and a one-way valve is provided at one end of the above-mentioned exhaust pipe located in the above-mentioned sound-absorbing layer.

[0015] As one embodiment of the present invention, the above-mentioned high-pressure exhaust pipe, return air pipe and air-supplying and reheat-increasing pipe are on the same side of the variable frequency compressor, and the above-mentioned high-pressure exhaust pipe, return air pipe and air-supplying and reheat-increasing pipe are arranged side by side. A muffler is arranged on the above-mentioned high-pressure exhaust pipe, and the above-mentioned muffler is an internal vacuum interlayer. The U-shaped bend of the above-mentioned return air pipe is filled, heated and annealed for 150mm section.

[0016] As one embodiment of the present invention, the upper end of the above-mentioned sound-absorbing layer and the above-mentioned upper vacuum isolation layer are sealed by structural adhesive, and the lower end of the above-mentioned sound-absorbing layer and the above-mentioned lower vacuum isolation layer are sealed and isolated by structural adhesive. The intersection at the joint must be more than 10>mm and cross-coated with glue for sealing.

[0017] As an embodiment of the present invention, the above-mentioned sound-absorbing silicate is sound-insulating vermiculite, and the above-mentioned sound-insulating vermiculite adopts a porous structure.

[0018] As an embodiment of the present invention, after the set temperature of the variable frequency compressor is reached, the heat pump host operates at 10%-60% of the rated power to maintain the heat generated by the heat pump host at a low frequency to offset the heat consumed naturally.

[0019] Technical advantages of this application:

[0020] 1. The present invention provides an upper vacuum insulation layer and a lower vacuum insulation layer, and the vacuum sound insulation effect of the upper vacuum insulation layer and the lower vacuum insulation layer is improved by more than 100% compared with the sound-absorbing cotton. The lower vacuum insulation layer cooperates with the shock-absorbing device to achieve a secondary shock-absorbing effect, so that the vibration of the variable frequency compressor cannot be transmitted to the chassis. The first shock-absorbing rubber pad and the second shock-absorbing rubber pad are provided to achieve a double shock-absorbing effect.

[0021] 2. By setting an outer layer of sealant on the outside of the inner layer of sound-absorbing cotton and using an exhaust device to evacuate the air inside, the air conduction is reduced. The whole sound insulation structure can isolate the operating noise of the variable frequency compressor by 20%, that is, reduced to below 49.6 decibels, meeting the market requirement for low noise less than 55 decibels. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0023] Figure 1 It is a three-dimensional structural diagram of the variable frequency compressor in this application.

[0024] Figure 2 This is a schematic diagram of the connection structure between the variable frequency compressor and the shock absorbing device in this application.

[0025] Figure 3 This is a schematic diagram of the installation structure of the upper vacuum insulation layer and the lower vacuum insulation layer of the present application.

[0026] Figure 4 This is a schematic diagram of the structure of the sound-absorbing layer and the sealing tape layer of the present application.

[0027] Figure 5 A schematic diagram of the structure of the sonosilicate provided in one embodiment of the present application.

[0028] Figure 6 An embodiment of the present application provides Figure 5 A magnified view of the structure.

[0029] Figure 7 This is an operation flow chart of a variable frequency compressor provided in one embodiment of the present application.

[0030] Figure numerals: variable frequency compressor 1, high-pressure exhaust pipe 11, return air pipe 12; air supply enthalpy increasing pipe 13; upper vacuum isolation layer 2; vacuum isolation chamber 20, connecting screw 21; lower vacuum isolation layer 3; sound-absorbing layer 4; isolation chamber 40; shock-absorbing device 5; heat pump heating machine base plate 51; first shock-absorbing device 52; vacuum layer mounting plate 521; first rubber shock-absorbing pad 522; second shock-absorbing device 53; compressor mounting plate 531; second rubber shock-absorbing pad 532; sealing tape layer 6; exhaust device 7; exhaust pipe 71; exhaust gun 73; one-way valve 72; sound-absorbing silicate 8. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0032] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0033] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through an intermediate structure, but are only connected to form a whole through a connecting structure. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0035] like Figures 1 to 5 As shown, the present application provides a vacuum-isolated silent compressor for a heat pump heating machine, which reduces the vibration of the variable frequency compressor by adding a shock-absorbing device, and at the same time adds vacuum layers at the upper and lower positions to reduce sound propagation, and adds a sound-absorbing layer in the circumferential direction to reduce noise, so that the maximum sound decibel of the entire variable frequency compressor is reduced to below 55 decibels.

[0036] In one embodiment of the present application:

[0037] like Figure 1-Figure 2 As shown: a vacuum-isolated silent compressor for a heat pump heating machine is used to be arranged on the outside of a variable frequency compressor 1 of a full DC heat pump heating air conditioner. The variable frequency compressor 1 is an existing structure and can be applicable to any existing type of variable frequency compressor. A high-pressure exhaust pipe 11, a return air pipe 12 and an air supply and enthalpy increase pipe 13 are connected to the variable frequency compressor 1.

[0038] Among them, the high-pressure exhaust pipe 11, the return air pipe 12 and the air-supplying and reheat-increasing pipe 13 are on the same side of the variable frequency compressor 1, and the high-pressure exhaust pipe 11, the return air pipe 12 and the air-supplying and reheat-increasing pipe 13 are arranged side by side. A muffler is arranged on the high-pressure exhaust pipe 11. The core of the muffler is that it is set to a sandwich vacuum, the purpose of which is to isolate the abnormal sound of the exhaust.

[0039] The conventional variable frequency compressor 1 is directly installed on the surface of the building, or has only one layer of shock absorbing device, so the vibration sound and noise generated by the variable frequency compressor 1 will be directly transmitted, and the noise reduction effect is poor.

[0040] Therefore, an upper vacuum isolation layer 2 and a lower vacuum isolation layer 3 are respectively arranged on the top and bottom of the variable frequency compressor 1; a sound-absorbing layer 4 is circumferentially surrounded by the variable frequency compressor 1, and the upper end of the sound-absorbing layer 4 is sealed and connected to the upper vacuum isolation layer 2, and the lower end of the sound-absorbing layer 4 is sealed and isolated from the lower vacuum isolation layer 3.

[0041] To this end, the present invention designs a vacuum-insulated silent compressor for use in a heat pump heating machine to reduce the noise of the variable frequency compressor so as to meet market demand and noise requirements and standards in various regions.

[0042] like Figure 2-Figure 4 As shown, the sound insulation structure of the present invention mainly includes: a lower vacuum insulation layer 3 and an upper vacuum insulation layer 2, and noise reduction and isolation are performed through the two vacuum sound insulation layers.

[0043] The upper vacuum isolation layer 2 and the lower vacuum isolation layer 3 are configured as a vacuum isolation chamber 20, in which the air is evacuated and the interior is in a vacuum state. The parts where the variable frequency compressor emits noise are the top and the bottom. Even if the insulation cotton is used to wrap it well, the noise will be transmitted through the bottom of the compressor. In view of this, after years of research and development and experiments, a transmission scheme that uses the vacuum principle to isolate noise has been invented, and the effect is very obvious.

[0044] like Figure 1-3 As shown, in order to ensure the sound insulation effect, the cross-sectional areas of the lower vacuum isolation layer 3 and the upper vacuum isolation layer 2 are both larger than the cross-sectional area of ​​the variable frequency compressor 1, so that the lower vacuum isolation layer 3 and the upper vacuum isolation layer 2 can fully isolate and cover the upper and lower surfaces of the variable frequency compressor 1.

[0045] In order to keep the lower vacuum isolation layer 3 and the upper vacuum isolation layer 2 fixed, a plurality of connecting screw rods 21 are arranged between the lower vacuum isolation layer 3 and the upper vacuum isolation layer 2, the upper end of each connecting screw rod 21 is connected to the bottom surface of the upper vacuum isolation layer 2, and the lower end of each connecting screw rod 21 is connected to the top surface of the lower vacuum isolation layer 3, and the connecting screw rods 21 fix the lower vacuum isolation layer 3 and the upper vacuum isolation layer 2 by threaded connection.

[0046] Firstly, the vacuum sound insulation of the lower vacuum insulation layer 3 and the upper vacuum insulation layer 2 is more than 100% better than the current sound-absorbing cotton. Secondly, the lower vacuum insulation layer 3 has a secondary shock-absorbing effect, which prevents the vibration of the variable frequency compressor from being transmitted to the base plate 51 of the heat pump heater. At the same time, the lower vacuum insulation layer 3 creates conditions for the next step of the process.

[0047] like Figure 1-Figure 3 As shown, in order to reduce the noise in the circumferential direction of the variable frequency compressor and achieve a further noise reduction effect, a sound-absorbing layer 4 is further provided in the circumferential direction of the variable frequency compressor 1, and a sound-absorbing silicate 8 is further filled between the sound-absorbing layer 4 and the variable frequency compressor 1. First, the sound is isolated by the sound-absorbing layer 4, and then the sound insulation material is filled inside to perform preliminary noise treatment.

[0048] like Figure 3 As shown, the upper end of the sound-absorbing layer 4 is connected to the side wall of the upper vacuum insulation layer 2, and the lower end of the sound-absorbing layer 4 is connected to the side wall of the lower vacuum insulation layer 3. Specifically, the sound-absorbing layer 4 wraps the entire variable frequency compressor 1, the lower vacuum insulation layer 3 and the upper vacuum insulation layer 2 together.

[0049] like Figure 1-2 As shown, a shock absorbing device 5 is also provided at the bottom of the variable frequency compressor 1, and the shock absorbing device 5 includes a heat pump heating machine base plate 51, and a first shock absorbing device 52 is provided on the heat pump heating machine base plate 51, the lower vacuum insulation layer 3 is installed on the first shock absorbing device 52, and a second shock absorbing device 53 is provided on the upper part of the lower vacuum insulation layer 3, and the variable frequency compressor 1 is installed on the second shock absorbing device 53; the first shock absorbing device 52 includes a vacuum layer mounting plate 521 and a plurality of first rubber shock absorbing pads 522, the upper end of each first rubber shock absorbing pad 522 is connected to the vacuum layer mounting plate 521, and the lower end of each first rubber shock absorbing pad 522 is connected to the heat pump heating machine base plate 51.

[0050] The second shock absorbing device 53 includes a compressor mounting plate 531 and a plurality of second rubber shock absorbing pads 532 , the variable frequency compressor 1 is fixed on the compressor mounting plate 531 , the upper end of each of the second rubber shock absorbing pads 532 is connected to the compressor mounting plate 531 , and the lower end of each of the second rubber shock absorbing pads 532 is connected to the lower vacuum isolation layer 3 .

[0051] The second rubber shock-absorbing pad 532 of the second shock-absorbing device 53 plays the role of primary shock absorption, reducing the vibration energy transmitted to the lower vacuum isolation layer 3 when the variable frequency compressor 1 is running, and then the lower vacuum isolation layer 3 performs sound isolation vibration, and further performs secondary shock absorption through the first rubber shock-absorbing pad 522 of the first shock-absorbing device 52, so that most of the vibration energy is dissipated and the generation of vibration sound is reduced. The whole set of shock-absorbing device equipment cooperates to reduce vibration energy and isolate vibration sound.

[0052] The main parts of the variable frequency compressor 1 that emit noise are the top and the bottom. Even if it is wrapped with thermal insulation cotton well, the noise will be transmitted through the bottom of the compressor. Therefore, the projections of the upper vacuum isolation layer 2 and the lower vacuum isolation layer 3 need to cover the variable frequency compressor 1, that is, the areas of the upper vacuum isolation layer 2 and the lower vacuum isolation layer 3 are both larger than the transverse cross-sectional area of ​​the variable frequency compressor 1.

[0053] In order to improve the noise reduction capability, the outer side of the soundproofing layer 4 of the present invention is provided with a sealing tape layer 6. A heat-resistant and cold-resistant sealing tape layer 6 is added on the basis of the soundproofing layer 4, and the surrounding is sealed by hot melting, so that the whole soundproofing device is in a vacuum state.

[0054] However, the sealing effect may change over time, air will slowly penetrate into the sound-absorbing layer 4, and the sound insulation effect will gradually decrease. In order to restore the sound insulation effect to an optimal state, an exhaust device 7 is connected to the sealing tape layer 6 of the present invention.

[0055] like Figure 4As shown, the air extraction device 7 of the present invention includes an air extraction pipe 71, which passes through the sealing tape layer 6 and is connected to the sound-absorbing layer 4. The outside of the air extraction pipe 71 is connected to an air extraction gun 73, and a one-way valve 72 is provided at one end of the air extraction pipe 71 located at the sound-absorbing layer 4. The one-way valve 72 can prevent external air from entering and ensure the normal operation of the air extraction process.

[0056] An isolation cavity 40 is formed between the upper vacuum isolation layer 2 , the lower vacuum isolation layer 3 and the sound-absorbing layer 4 , and the isolation cavity 40 is filled with sound-absorbing silicate 8 .

[0057] A sealing tape layer 6 is provided on the outside of the sound-absorbing layer 4, and the sealing tape layer 6 is sealed on the outside of the sound-absorbing layer 4 by hot-melt. The upper end of the sound-absorbing layer 4 and the upper vacuum insulation layer 2 are sealed by structural adhesive, and the lower end of the sound-absorbing layer 4 and the lower vacuum insulation layer 3 are sealed and isolated by structural adhesive. The cross at the joint must be greater than 100 mm, and the cross-coating glue is used for sealing.

[0058] In order to improve the internal sound insulation effect, an exhaust device 7 is provided on the sealing tape layer 6. The air in the sound-absorbing layer 4 is extracted by the exhaust device 7, which can not only improve the sound insulation effect but also reduce heat loss by forming a vacuum cavity.

[0059] Specifically, Figure 5-6 As shown, the exhaust device 7 of the present invention includes an exhaust pipe 71, which passes through the sealing tape layer 6 and is connected to the sound-absorbing layer 4. The outside of the exhaust pipe 71 is connected to an exhaust gun 73, and a one-way valve 72 is provided at one end of the exhaust pipe 71 located at the sound-absorbing layer 4.

[0060] The high-pressure exhaust pipe 11, the return air pipe 12 and the air-increasing enthalpy pipe 13 are located on the same side of the variable frequency compressor 1, and the high-pressure exhaust pipe 11, the return air pipe 12 and the air-increasing enthalpy pipe 13 are arranged side by side. A muffler is arranged on the high-pressure exhaust pipe 11, and the muffler is an inner vacuum interlayer.

[0061] The U-shaped bend of the return air pipe 12 is charged and heated for annealing at 150mm. The return air pipe 12 of the variable frequency compressor 1, according to the heating capacity, has a pipe diameter of ≥22.22mm for 10HP and above, and must be charged and heated for annealing at 150mm in the U-shaped bend. The gas-liquid separator is transmitted through the return air pipe, so as to eliminate the hard force of the return air pipe and prevent the vibration of the compressor.

[0062] like Figure 4-5As shown, an isolation cavity 40 is formed around the upper vacuum isolation layer 2, the lower vacuum isolation layer 3 and the sound-absorbing layer 4, and the isolation cavity 40 is filled with sound-absorbing silicate 8, and the silicate 8 is sound-absorbing vermiculite, and the sound-absorbing vermiculite adopts a porous structure. The sound-absorbing silicate 8 is sound-absorbing vermiculite. The internal cavity of the sound-absorbing layer 4 is filled with a special silicate, a special sound-absorbing material, for the purpose of heat preservation and sound absorption, which can be specifically sound-absorbing vermiculite, which belongs to silicate. After high-temperature roasting, the volume of raw vermiculite sheets can rapidly expand several to dozens of times. Since the vermiculite forms a fine air spacer after expansion, a porous sound-absorbing material is formed.

[0063] Existing variable frequency controllers all shut down when the terminal temperature reaches a certain level. The advantage is that it saves electricity, but the disadvantage is that once the terminal temperature rises, the heat pump host must work at a high frequency to achieve the purpose of rapid heating or cooling. It is well known that when running at a high frequency, the noise of the variable frequency compressor must be greater than the noise at a low frequency.

[0064] For this reason, Figure 7 As shown, after the set temperature is reached, the heat pump host does not stop, and the variable frequency compressor 1 operates at 10%-60% of the rated power to maintain the energy generated by the heat pump host at low frequency to offset the energy consumed naturally.

[0065] By reducing the operating frequency of the heat pump host, the heat generated by the heat pump host at low frequency can be ensured to offset the heat consumed by the end user. Once the heat loss at the end is too much, the compressor in low-frequency operation will gradually adjust and increase the operating frequency to medium frequency to balance the capacity consumed by the end user. In view of this, the variable frequency compressor and heat pump host designed by the present invention are in a non-stop mode unless they are manually shut down.

[0066] The technical features of the above-described embodiments may be arbitrarily combined, and the execution order of the method steps is not limited. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A vacuum-insulated silent compressor for a heat pump heating machine, characterized in that: include: A variable frequency compressor (1) of a full DC heat pump heating air conditioner, wherein the variable frequency compressor (1) is connected to a high-pressure exhaust pipe (11), a return air pipe (12) and an air supply enthalpy increase pipe (13); An upper vacuum insulation layer (2) and a lower vacuum insulation layer (3) are respectively arranged at the top and bottom of the variable frequency compressor (1); a sound-absorbing layer (4) surrounds the variable frequency compressor (1) in the circumferential direction; the upper end of the sound-absorbing layer (4) is sealed and connected to the upper vacuum insulation layer (2), and the lower end of the sound-absorbing layer (4) is sealed and isolated from the lower vacuum insulation layer (3); A shock absorbing device (5) is also provided at the bottom of the variable frequency compressor (1), the shock absorbing device (5) comprising a heat pump heating machine base plate (51), a first shock absorbing device (52) is provided on the heat pump heating machine base plate (51), the lower vacuum insulation layer (3) is mounted on the first shock absorbing device (52), a second shock absorbing device (53) is provided on the upper part of the lower vacuum insulation layer (3), and the variable frequency compressor (1) is mounted on the second shock absorbing device (53); An isolation cavity (40) is formed between the upper vacuum isolation layer (2), the lower vacuum isolation layer (3) and the sound-absorbing layer (4), and the isolation cavity (40) is filled with sound-absorbing silicate (8).

2. The vacuum-insulated silent compressor for heat pump heating machine according to claim 1, characterized in that: The projections of the upper vacuum isolation layer (2) and the lower vacuum isolation layer (3) can both cover the variable frequency compressor (1); the upper vacuum isolation layer (2) and the lower vacuum isolation layer (3) are configured as a vacuum isolation chamber (20); air is evacuated from the vacuum isolation chamber (20); a plurality of connecting screws (21) are provided between the upper vacuum isolation layer (2) and the lower vacuum isolation layer (3); the upper end of each connecting screw (21) is connected to the bottom surface of the upper vacuum isolation layer (2); and the lower end of each connecting screw (21) is connected to the top surface of the lower vacuum isolation layer (3).

3. The vacuum-insulated silent compressor for heat pump heating machine according to claim 1, characterized in that: The first shock absorbing device (52) comprises a vacuum layer mounting plate (521) and a plurality of first rubber shock absorbing pads (522), wherein the upper end of each first rubber shock absorbing pad (522) is connected to the vacuum layer mounting plate (521), and the lower end of each first rubber shock absorbing pad (522) is connected to the base plate (51) of the heat pump heating machine.

4. The vacuum-insulated silent compressor for heat pump heating machine according to claim 3, characterized in that: The second shock absorbing device (53) comprises a compressor mounting plate (531) and a plurality of second rubber shock absorbing pads (532); the variable frequency compressor (1) is fixed on the compressor mounting plate (531); the upper end of each second rubber shock absorbing pad (532) is connected to the compressor mounting plate (531); and the lower end of each second rubber shock absorbing pad (532) is connected to the lower vacuum isolation layer (3).

5. The vacuum-insulated silent compressor for heat pump heating machine according to claim 4, characterized in that: A sealing tape layer (6) is provided on the outer side of the sound-absorbing layer (4), the sealing tape layer (6) is sealed on the outer side of the sound-absorbing layer (4) by hot-melt, and an exhaust device (7) is provided on the sealing tape layer (6).

6. The vacuum-insulated silent compressor for heat pump heating machine according to claim 5, characterized in that: The exhaust device (7) comprises an exhaust pipe (71), the exhaust pipe (71) passes through the sealing tape layer (6) and is connected to the sound-absorbing layer (4), the outside of the exhaust pipe (71) is connected to an exhaust gun (73), and a one-way valve (72) is provided at one end of the exhaust pipe (71) located on the sound-absorbing layer (4).

7. The vacuum-insulated silent compressor for heat pump heating machine according to claim 1, characterized in that: The high-pressure exhaust pipe (11), the return air pipe (12) and the air-supplying and enthalpy-increasing pipe (13) are located on the same side of the variable frequency compressor (1), and the high-pressure exhaust pipe (11), the return air pipe (12) and the air-supplying and enthalpy-increasing pipe (13) are arranged side by side. A muffler is arranged on the high-pressure exhaust pipe (11), and the muffler is an internal vacuum interlayer. Each 150 mm section of the U-shaped bend of the return air pipe (12) is subjected to a charging, heating and annealing treatment.

8. The vacuum-insulated silent compressor for heat pump heating machine according to claim 1, characterized in that: The upper end of the sound-absorbing layer (4) and the upper vacuum insulation layer (2) are sealed by structural adhesive, and the lower end of the sound-absorbing layer (4) and the lower vacuum insulation layer (3) are sealed by structural adhesive. The cross-coating and sealing at the joint must be greater than 100 mm.

9. The vacuum-insulated silent compressor for heat pump heating machine according to claim 1, characterized in that: The sound-absorbing silicate (8) is sound-insulating vermiculite, and the sound-insulating vermiculite has a porous structure.

10. The vacuum-insulated silent compressor for heat pump heating machine according to claim 1, characterized in that: After the variable frequency compressor (1) reaches the set temperature, the heat pump host operates at 10%-60% of the rated power, maintaining the heat generated by the heat pump host at a low frequency to offset the heat consumed naturally.

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